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Volume 1 Nucleic Acid Testing (NAT) Page 3 Food Intolerance and Food Sensitivity Page 11 Inborn Errors of Metabolism Page 15 Help prevent thalassemia - Jago re... Page 23 Lab Communique 1 From the Editor’s Desk It is my pleasure to present this very Contents 2 Editor’s Desk 3 Nucleic Acid Testing (NAT) Dr. Anand Deshpande 11 Food Intolerance and Food Sensitivity Dr. Vipla Puri 15 Inborn Errors of Metabolism Dr. Tester F. Ashavaid first edition of our Lab Communique. 21 Funded Research / Projects in the Department of Laboratory Medicine It was a long-felt need to present the current, new and 23 Help prevent thalassemia - Jago re... Dr. Sharmila Ghosh research activities of the Hinduja Hospital Important Lab Numbers Laboratory Medicine department, which has the unique distinction of being the 1 st hospital laboratory in Asia to be accredited Department Of Laboratory Medicine............... Location- Jamuna Clinic (Hinduja Clinic) to the College of American Pathologists Stat Lab – Reception..............................2444 7327 since 2006. Stat Lab – Biochemistry..........................2444 7328 Blood Bank.............................................2444 7308 This initiative will serve the need of increasing awareness about a qualityconscious hospital-based Laboratory`s core testing practices,areas of research Donor Room..........................................2444 7306 Ground Floor O.P.D. Blood Collection..........................2444 7079 Location - Lalita Girdhar Building (S1 Bldg) Biochemistry Lab................................. 2444 7935/ interest and available facilities for . ....................................................2444 7931 Postgraduates,General practitioners and Hematology Lab.....................................2444 7947 Specialists. RIA Lab.................................................2444 7948 Microbiology/Serology Lab.................. 2444 7793/ In this issue, some of the Laboratory Consultants have put together the need for awareness of newer technologies in the laboratory setup with an emphasis on the approach to some common disorders. We hope this will serve to keep you abreast with modern-day Laboratory practices. . ....................................................2444 7794 Histopathology / Cytopathology Lab................................2444 7797 NAT Lab............................................... 2444 7610/ . ....................................................2444 7611 Home Collection Service.................3981 8181/ . .................................................. 6766 8181 Hinduja Poison Center..................... 2446 4600 Lab Medicine Fax Number................ 2444 2318 Assistant Manager - Diagnostics Services Dr. Preeti Goraksha................................2444 7942 Quality Co-ordinator..........................2444 7943 Chetna Patil...........................................2444 7943 Dr Anita S. Bhaduri, M.D. Surgical Pathologist 2 Vol 1 Ext 7143 Produced at the marketing cell of Hinduja Hospital. For feedback and comments write to [email protected] Nucleic Acid Testing (NAT) - Adding a layer of safety in blood transfusion Blood Dr. Anand Deshpande M.D. transfusion provides an antibodies are produced for the essential and life-saving support laboratory to detect, is called the in modern healthcare. When used ‘seroconversion correctly it can save lives. However, ‘window period’. In some cases it can cause acute or delayed such as HCV it could be as high as complications and also carries the 60 days or more. In addition, the risk of Transfusion Transmitted EIA screening has a very high rate Infections (TTIs) such as HIV, HBV, of false positives that unfortunately HCV and other diseases. results in perfectly healthy donors window’ or being labelled as “positive”. Hence, The five tests mandatory by Food in these techniques, test specificity & Drugs Administration (FDA) for is sacrificed somewhat to gain donated blood units are HBsAg, more sensitivity. HIV Ab, HCV Ab, VDRL and Malarial parasites. Current testing Over two billion people worldwide methods carried out in India are are infected with HBV, which is based on the principle of enzyme the leading cause of liver disease. immunoassay based Of these, more than 350 million blood (EIA). screening EIA- detect are chronically infected, with a virus-induced antibodies or viral tests higher risk for liver cancer and antigens, not the virus itself. The liver cirrhosis. Currently available main problem is that the body takes screening some time to produce detectable designed to detect core antibodies amount of antibodies that can be or detected by these methods. This these infection indicators do not period from the time someone is appear until upto eight weeks after infected to the time that enough an infection. Thus HBV presents a surface technologies antigens. are However, Figure 1: Window period reduction by NAT Dr. A. Deshpande, Consultant Transfusion Medicine & Hematology, MD – Pathology E-Mail - [email protected] Contact No.: 24451515 Ext 8307/8308 Lab Communique 3 Countries like higher residual risk of transmission The greatest threat to the safety by transfusion than HCV or HIV and of blood supply is donation by the HBV infection window period ‘seronegative’ is the real issue in the transfusion ‘window period’ of initial infection setting. Countries like India with and have the highest a high prevalence of HBV have Window period samples have low the highest risk of transfusion viral load. Detection of very low risk of transfusion transmitted viral load samples requires highly transmitted HBV HBV NAT. In addition, worldwide India with a high prevalence of HBV and probably would be the most to gain from HBV NAT. HBV and probably would be the most to gain from detectable Vol 1 during seroconversion. sensitive assays. 170 million people are infected Hence the Nucleic Acid with HCV and 40 million with HIV. Amplification Testing (NAT)….! These are a serious global concern. With NAT the window period is Blood is processed into blood shortened considerably, as it is a components to enable more than highly sensitive and specific test one patient to benefit from a single that detects very low levels of viral donation. Thus a single unit of RNA or DNA that may be present in blood collected from a donor in the donated blood. With the use of NAT window period of infection may be systems, the ‘window period’ for transfused in upto four recipients detection of HIV is reduced from or may be added to pools of more 20.3 days to 5.6 days, for HCV it than 1,000 units to manufacture is reduced from 58.3 days to 4.9 blood -derived products. days and for HBV from 53.3 days Fig 2: Pre-Amplification Area - NAT Laboratory, PDHNH 4 donors Nucleic acid Amplification Testing (NAT) is to 35.4 days. of infectious microorganism in donor blood by amplifying the NAT is being effectively utilized in nucleic acid sequences specific Australia, Indonesia, HongKong, to the microorganism,.giving it Korea, Malaysia, New Zealand, a much higher level of sensitivity Thailand, a highly sensitive Singapore, Japan, and specificity than routine EIA Europe, Middle East, Africa, France, test. Thus the power of NAT method of testing Germany, Spain, lies in its ability to detect viral Switzerland, UK, America, Brazil, genomic nucleic acids rather than blood that is used Carribean, Canada and a host of the presence of antibodies. NAT is to detect Hepatitis other nations. A look at the NAT used in addition to the antibody experience of various countries test since in some individuals shows that every country has theoretically the amount of virus benefitted from this technology. may have fallen below detectable C, HIV and HBV virus. Israel, Italy, limits and antibodies could still be What is Nucleic acid amplification detectable. testing (NAT) and how does it work? Nucleic acid Amplification Testing The NAT used in our institution (NAT) is a highly sensitive method utilizes target amplification nucleic of testing blood that is used to acid probe technology for the detect Hepatitis C, HIV and HBV detection of HIV-1 RNA, HCV RNA, virus. NAT is a direct test which and HBV DNA. The assay contains detects the viral DNA or RNA. reagents which may be used for It period simultaneous detection of three by detecting low levels of viral reduces the window viruses or the individual viruses genomic materials that are present HIV-1, soon after infection but before the assay). HCV, and HBV (Triplex body starts producing antibodies in response to a virus. The TMA assay involves three main steps (i) target capture based sample Genomic screening for infectious preparation, agents using NAT is performed mediated amplification, and (iii) with several hybridization acid amplification techniques, all performed in a single tube. e.g. Transcription –mediated All three assays incorporate an amplification (TMA), Polymerase internal control to validate each chain reaction (PCR) ligase chain reaction. in-vitro nucleic (ii) transcription- protection assay, reaction and nucleic acid sequence –based amplification. All these During sample preparation, viral techniques detect the presence RNA and DNA are isolated from Lab Communique 5 The TMA assay specimens via the use of target the amplicons. During the detection capture. Oligonucleotides that are steps the chemiluminescent signal homologous to highly conserved produced by the hybridized probe regions of HIV-1, HCV and HBV is measured in a luminometer and if present in the test specimen is reported as Relative Light Units capture based are hybridized to the HIV-1 RNA, (RLU). sample preparation, hybridized target is then captured The assay differentiates between onto the internal control and combined (ii) transcription- that are then separated from the HIV-1/HCV/HBV specimen in a magnetic field. does not discriminate between involves three main steps (i) target mediated amplification, and (iii) hybridization protection assay, HCV RNA or HBV DNA target. The magnetic microparticles but individual HIV-1, HCV and HBV Target amplification occurs via signals. Samples found reactive TMA, which is a transcription- in the Ultrio test are later retested based nucleic acid amplification for HIV-1, HCV and HBV using method that utilizes two enzymes. discriminatory assays. Detection by Impact of NAT: A pilot project Assay in India at Apollo Indraprastha is achieved all performed in a Hybridization (HPA) using single-stranded nucleic Hospital, single tube. acid probes with chemiluminescent 12,224 study samples 133 (1.09%) labels that are complementary to were reactive by Ultrio Assay. 84 Protection Fig 3: Post Amplification Area – NAT Laboratory, HH 6 signals Vol 1 showed that out of Blood safety has samples were seroreactive but the donors were screened for been an integral part NAT non reactive. There were 8 only syphilis and hepatitis B virus NAT yield cases – 1 HIV, 1 HIV-HCV before 1985. Now a series of coinfection and 6HBV. Observed specific and non specific measures NAT yield for all three cases was 1 are being introduced into the at our transfusion in 1528 (0.065%). Similar studies screening of blood donations in in have also order to reduce the residual risk service. Our mission demonstrated high yields. The of bloodborne viruses. The latest potential for NAT yield in India is measure has been viral nucleic is to provide safe staggering given the prevalence acid detection. and high quality 5.7 million with HIV, 12 million of the quality system blood and blood other countries of these viruses in the population with HCV, and 40 million with HBV (10 per cent of the world’s components to all HBV infected population) when patients requiring have transfusion. suggested that the NAT yield for compared to other countries that already implemented the technology. Data from this study all three viruses in India could be 29 times higher than that observed in Japan, and even higher for HIV-1 alone. In addition, India has a high percentage of replacement blood donors who are associated with higher infection rates compared to volunteer donors. Our goal: To reach zero risk blood supply We have come a long way in that Given the high seropositivity rate of HIV, HBV & HCV in India and keeping in mind the high percentage of first time donors and replacement donors, it is likely that adding NAT to the current screening test, will have significant reduction in TTI, making our blood safer. Blood safety has been an integral part of the quality system at our transfusion service. Our mission is to provide safe and high quality blood and blood components to all patients requiring transfusion. Implementation of NAT screening of all blood donations in Hinduja Hospital since March 2009 is another step towards ensuring safe & effective transfusions. Lab Communique 7 Achievements DR. ANAND DESHPANDE MD, Consultant, Transfusion Medicine & Hematology • Postgraduate in Pathology from Nagpur University. • Senior residency in Haematology at P G I, Chandigarh. • Has been trained in peripheral blood stem cell transplant at University of Minnesota, Minneapolis USA. • Recipient of prestigious BGRC oration of Mumbai Hematology Group (MHG) in 2007. • Scientific Advisory committee member (SAC) National Institute of Immunohematology, ICMR, Mumbai. • Has set up Nucleic Acid Amplification Testing (NAT) laboratory at Hinduja Hospital for screening donors’ blood units. This is the first laboratory in entire Maharashtra. • Has been instrumental in setting up HLA laboratory at Hinduja Hospital, which is now carrying out tissue typing using molecular technique. • Has set up many Therapeutic apheresis procedures at Hinduja Hospital including Therapeutic Plasma Exchange (TPE) & Therapeutic Erythrocytapheresis (TEA). This is one of the first centres to carry out TEA in India. • Has also indroduced unexpected Red Blood Cell antibody screening of the patients. This is one of the first centres in Mumbai to introduce the technique. • Has received many awards including Best Paper award in National conferences & Dr. H. M. Bhatia award, Dr. L. D. Sanghvi award (twice), Dr. Hiranandani & Dr. A. J. Desai award (twice) of Mumbai Hematology Group. • Has delivered a large number of scientific lectures in various CMEs & Conferences. • Has organized CME in 2006 & 2008 – “Transfusion & Beyond” at Hinduja hospital which we are planning every alternate year. • Ongoing projects :- * Autoimmune hepatitis. • Occult Hepatitis B & Hepatitis G Virus infections. E-mail: [email protected]. Contact No.: 24451515 Ext 8307/8308 8 Vol 1 Symposium on Advanced Clinical Applications in Flow cytometry In India, current use of flow cytometry in a clinical setting has largely centered on CD4 counts, HLA-B27 analysis, and leukemia immunophenotyping. There has been a growing interest in extending the use of this tool to study PNH, flow cytometry cross-match, platelet function disorders, RBC disorders, multiple myeloma, solid tumors, body fluid analysis etc. However, limited familiarity with standardized protocols and nuances of analysis is a gap that has impeded routine usage of these assays for patient care. Dr. Shanaz Khodaiji It is to bridge this gap a two-day Symposium on “Advanced Clinical Applications of Flow Cytometry” was held on February 25th & 26th, 2009 at Hinduja Hospital, Mumbai. The Symposium was organized by the department of Hematology and was attended by 124 participants. The teaching program was focused primarily on the needs of existing flow cytometry users. It provided an opportunity to new enthusiasts of the technology and physicians to get sensitized to the wide applications of flow cytometry. A number of eminent international and national speakers gave talks in their area of expertise. • The keynote lecture was delivered by Dr.Attila Tarnok, Editor-in-chief, “Cytometry Part A” University of Leipzig, Germany who spoke on How to present flow cytometry data and Pediatric cell immunity. • Dr.Edna D’souza from NIIH, Mumbai spoke on Flow sorting for antenatal diagnosis • Dr.Amar Dasgupta, COO,Religare Super, Mumbai and Dr.Renu Saxena, Head, Dept of Hematology from AIIMS, New Delhi discussed use of flow cytometry in bleeding and platelet function disorders. • Dr.Manisha Madkaikar and Dr.Prabhakar Kedar from NIIH, Mumbai presented their work on PNH and RBC membrane disorder respectively. • Transplant flow cytometry, an important emerging application of flow cytometry was covered by Dr.N.K.Mehra, from AIIMS, New Delhi who spoke on flow cytometry crossmatch and Dr.Paresh Jain, Scientific advisor, BD Bioscience, who spoke on Absolute CD34 stem cell counting. • Presentations in Oncology were made by Dr.Sujata Iyer, from BD Biosciences, USA who spoke on BCR-ABL fusion protein detection, Dr. Shanaz Khodaiji - Consultant Hemotology, M.D. (Path & Micro), D.C.P. E-Mail - [email protected]. Contact No. 24451515 Extn – 7144 Hinduja Lab Lab Communique Newsletter 9 Dr.Avtar Krishnan from University of Miami, Florid, USA, who spoke on Flow Immunocytochemistry of body fluids and Dr.Suchitra Swaminathan from NIIH, Mumbai, spoke on Signal transduction studies in AML. • Some miscellaneous topics were discussed by Dr.Manisha Madkaikar who spoke on Flow cytometry in diagnosis of primary immunodeficiency disorders, Dr.Sandeep Shah, from Ahmedabad who spoke on Accreditation of a flow cytometry lab and Dr.Tina Dadu, from B..L.Kapoor Hospital, New Delhi who presented her experience on Flow cytometry of lymphnodes specimen. This symposium was a first of its kind as it covered newer clinical applications in flow cytometry and thus expanded the horizon for flow cytometry users in India. The delegates were extremely happy with the scientific content as well as the hospitality displayed by our hospital which went a long way in making it a grand success. 10 Vol 1 Food Intolerance and Food Sensitivity Bringing innovation at Hinduja react to chemicals found naturally We are the first hospital based lab in foods. For example: Some people to start food intolerance test called get headache after eating a certain ‘Genarray’ based on Microarray type of cheese and other foods Technology. technology containing tyramine. Psychological originally invented for studying factors play a significant role in DNA food intolerance. and The gene expression is now being exploited to practical Dr. Vipla Puri Ph.D. diagnostic tests for early detection Carbohydrate intolerance: of food intolerances by measuring Sucrose, milk, food specific IgG levels in blood. lactose, or glucose are problems With the imminent availability of for the sensitive technology in our these hospital we can now diagnose food carbohydrates furnish most of the intolerance to 200 specific foods energy needed in a healthy diet. fructose, many sugar, people digesting compounds although in patients presenting with various symptoms from general lethary, Celiac disease: This disorder is weight gain, dermatitis, arthritis to caused by an intolerance to gluten, irritable bowel syndrome. the protein found in wheat and other grains. In celiac disease, the intolerance cells lining the small intestine are Food allergies and food intolerances damaged and prevent the normal overlap What is food considerably.Intolerances absorption of food constituents, are negative reactions to food particularly fats. Celiac disease that do not involve the immune involves an immune response but system, such as lactose intolerance does not involve IgE, an antibody or intolerance responsible for allergic reaction. is an exaggerated or abnormal Common symptoms are bloating physical reaction to a food or food and gas. sensitivity. Food additive caused by some chemical or enzyme deficiency in the body. Toxicological food reactions and Foods may poisoning: intolerance contain toxins that are naturally Several factors may cause a person part of the food or that were added to have an adverse reaction to food. by mistake during manufacturing, Sometimes a person’s body will shipping or handling. For instance, Causes of food Dr. Vipla Puri, Consultant Radioimmunoassay, Ph.D - Consultant RIA Laboratory Email: [email protected] Contact No. 24451515 Extn - 7148/7149 Lab Communique 11 Foods may contain toxins that are naturally part of the food or that were added by mistake during manufacturing, shipping or handling. For certain fish like tuna or mackerel Gastro contain colic which histadine converted to histamine is with Infantile or colitis,Crohn’s disease, recurrent abdominal pain, diarrhea, improper storage and if consumed constipation, can cause adverse reactions. syndrome. Food poisoning, on the other hand, results from contamination of food with bacteria or other micro organisms. Symptoms may include vomiting, diarrhea, dehydration and unconsciousness. produce bowel Skin: Eczema, Urticaria. Nervous Headache, System: migraine, hyperactivity. Heart: Palpitations. Musculo skeletal: Unexplained joint pain, some kinds of arthritis, Pharmacological effects: Some foods irritable symptoms that unexplained muscle pain. Somatisation Psychiatric: disorder, fatigue, hypersomnia. instance, certain fish resemble reaction to drugs. For like tuna or mackerel tea and other products may cause contain histadine and other effects. which is converted Psychological to histamine with Psychological factors play a role in abdominal pain along with muscle food intolerance, causing people to and joint pain. react to a particular food because of Food intolerance – The common improper storage and if consumed can cause adverse reactions. example, caffeine found in coffee, a rapid heartbeat, sleeplessness reactions: smell, presentation and memories. Symptoms of food intolerance Food intolerance can surprisingly wide symptoms. However, cause variety a of certain features concerning the timing helpful when trying to identify possible causes. Symptoms are usually multiple, caused or made worse by food intolerance. Respiratory: glue ear. Vol 1 In practice, when food intolerance is involved, such conditions rarely exist alone, for example, a typical sufferer and occurrence of symptoms are 12 intestinal: – Asthma, may unexplained have migraine, fatigue, bloating, culprits The foods that tend to cause intolerance reactions in sensitive people include: • Dairy products, including milk, cheese and yogurt. • Chocolate. • Egg – particularly egg white. • Flavour enhancers such as MSG (Monosodium glutamate) • Food additives. • Strawberries, rhinitis, citrus fruits, tomatoes. • Wine – particularly red wine. Adults may somestimes be able to tolerate small amount of offending foods, but should What is the treatment Once the offending rice milk or hypo allergenic milk food is formula instead of cow’s milk. identified by high levels of IgG technology, Adults may sometimes be able to food intolerance can be managed by tolerate small amount of offending cutting the food out of one’s diet For foods, but should experiment to example : Babies or children with work out alternative suitable diet a lactose intolerance can be given to avoid symptoms and nutrient alternative soya milk, almond milk, deficiencies. using this sensitive experiment to work out alternative suitable diet to avoid symptoms and nutrient deficiencies. Achievements Dr. Vipla Puri Ph.D - Consultant RIA Laboratory • Awarded WHO fellowship to work as a visiting scientist at Karolinska Hospital, Stockholm, Sweden and at the Department of Biochemistry, University of Paris, Bicetre. • Invited by UNDP / UNFPA / WHO / World Bank Special Programme of Research, Development and Research Training in Human Reproduction, Geneva as Advisor and Member of Task Force on Laboratory Methods. • Visiting Research Assistant Professor, Department of Obstetrics and Gynaecology, Washington University School of Medicine, St Louis, MO, USA. • Invited to review multicentre trial results on “Screening for Pre-eclampsia; evaluation of predictive abilities of angiogenic factors for pre-eclampsia. WHO – Geneva • Recipient of ICMR – Research Grant to work on Foam Cell Formation in Leprosy. • Recognised Research Guide University of Mumbai. • Received best paper award for my work on Hyperhomocystenemia an independent risk factor for Osteoporosis in men. • Developed and Standardized 3 new assays for the diagnosis of Movement Disorders, Pure Red Cell Aplasia and Multiple Sclerosis. Relevant documents for filing ‘PATENT’ have been submitted. • Established newer technologies of Microarray to diagnose Food Intolerance and Chemiluminescence to diagnose various allergies. Email: [email protected]. Contact No. 24451515 Extn - 7148/7149 Lab Communique 13 Quiz Q1. The diagnosis of Clostridium difficile infection is made by a. A positive stool culture for Clostridium difficile b. Presence of antibodies in blood to Clostridium difficile c. Detection of Clostridium difficile toxin in faeces d. All of the above Q2. The following helps to reduce antimicrobial resistance Dr. Anjali Shetty MRCP, FRCPath a. Once started one must complete at least a 5 day course of antibiotics b. Using lower doses of antibiotics for prolonged periods c. Using a combination of antibiotics to treat all infections d. None of the above Q3. The following statement is true a. Blood cultures should be collected when the pt spikes a fever b. Blood cultures should be collected after the patient spikes a fever c. Blood cultures should be collected before the pt spikes a fever d. Timing of blood culture collection need not coincide with fever spikes Q4. The urine sample sent to diagnose Schistoma hematobium should be a. Early morning sample b. Mid-stream sample c. Terminal urine sample d. Any of the above Q5. A patient presents with fever of 1 day, mild rash, severe back pain. The platelets are 90,000, WBC is 2,200, L-75, N-20, M-4, and E-1. The preferred test for Dengue is? a. Dengue IgM b. NS1 antigen Q5 b Q4 c c. Dengue IgG Q2 d Q1 c d. Total IgM Q3 d Answers Dr. Anjali Shetty MRCP, FRCPath, Consultant Microbiology Email: [email protected]. Contact No. : 24451515 Ext 7156 14 Vol 1 Inborn Errors of Metabolism Inborn Errors of Metabolism (IEM) be eliminated by early diagnosis. are a heterogeneous group of However disorders caused due to single investigations gene defect which may manifest screening tests are insufficient to immediately after birth, or within confirm the diagnosis. routine laboratory and qualitative few days or weeks after birth. Dr. Ashavaid, T.F. Ph.D, FACB, CSi, PGDBA (Fin). In recent decades hundreds of Disorders of amino acid metabolism new inborn errors of metabolism result from defects either in the have been discovered. Some of synthesis of or breakdown of amino the major classes of inborn errors acids, or in the body’s ability to of disorders get the amino acids into the cells. metabolism are metabolism We at Hinduja Hospital, perform (e.g. Glycogen storage disease), quantitation of amino acids from amino plasma, of carbohydrate acid metabolism (e.g. urine & cerebrospinal Phenylketonuria, Maple Syrup Urine fluid (CSF) by High Performance Disease, Glutaric acidemia type – Liquid Chromatography (HPLC).The 1) organic acid metabolism (e.g. aminoacidogram obtained is then Alkaptonuria), fatty acid oxidation correlated with the case history of & the patient in order to rule out any (e.g. 2), mitochondrial Glutaric metabolism Acidemia peroxisomal type function – (e.g. metabolic disorder. An HPLC system offers accurate & reproducible Zellweger Syndrome), Lysosomal results, along with high resolution, Storage Disorders (e.g. Gaucher’s precision and sensitivity. Keeping Disease, Niemann Pick Disease) , into consideration our patient’s purine or pyrimidine metabolism convenience, (e.g. HPLC packages for amino acid Lesch-Nyhan Syndrome), steroid metabolism (e.g. Congenital we offer various analysis. These include: adrenal hyperplasia) mitochondrial function (e.g. Kearns-Sayre Syndrome). 1. Plasma Amino Acid Analysis, Urinary Amino Acid Analysis, CSF Amino Acid Analysis: All of us need to be aware that Analysis apparently every healthy newborn various has a significant risk of being such as plasma, urine and CSF maimed or killed by an inborn is a valuable diagnostic tool & error of metabolism which can is central to the investigation of of amino physiological acids in samples Dr. Tester F. Ashavaid, Consultant Biochemistry, Head, Department of Laboratory Medicine, Joint Director - Research., Ph.D, FACB, CSi, PGDBA (Fin). Email: [email protected] Contact No. 24451515 Extn - 7135 / 7136 Lab Communique 15 Quantitative amino acid analysis by HPLC provides confirmation of possible neurometabolic disorder. Phenylketonuria is a rare genetic Quantitative amino acid analysis disorder caused by the buildup by HPLC provides confirmation of of excess phenylalanine in the the identity and concentration of blood. The metabolic pathway in amino acids by providing accurate Phenylketonuria is the conversion information of on the levels of phenylalanine into another amino acids that may be present amino the identity and in subnormal concentrations.The pathway is affected due to the presence of characteristic pattern deficiency of enzyme phenylalanine concentration of of elevated amino acids is very hydrolase. The body needs both amino acids by useful in diagnosis of these rare phenylalanine as well as tyrosine disorders. to make three neurotransmitters providing accurate information on – acid, tyrosine epinephrine, and this dopamine & shortage of 2. Tyrosinemia package: The norepinephrine. amino acids reported in this package either of the two amino acids could are Plasma tyrosine, Urinary leave the patient vulnerable to host the levels of amino tyrosine & Urine Nitrosonaphthol of mental disorders, anxiety or test chronic fatigue. acids that may be a genetic disorder characterized present in by elevated blood levels of amino 4. acid tyrosine. There are three package: The types of Tyrosinemia Tyrosinemia reported in – I, Tyrosinemia – II, Tyrosinemia are ¬– III. The body needs adequate Methionine, Serum Homocysteine supplies & subnormal concentrations. - A (Qualitative).Tyrosinemia of tyrosine to is make Sulphur - Plasma Urine Amino Acids amino this acids package Cystine, Plasma Homocysteine.The many important brain chemicals amino acids Cystine, Methionine that and helps regulate appetite, Homocysteine are sulphur pain sensitivity, body’s response containing to functioning the metabolism of all these are of thyroid, pituitary & adrenal closely related. Both methionine glands, Low levels of tyrosine and cystine are required for the may lead to hypothyroidism, low production of the body’s most blood pressure, chronic fatigue & abundant sluggish metabolism. glutathione, which helps neutralize stress, normal amino natural acids and antioxidant, toxins in the liver. 3. Phenylketonuria (PKU) The acids Recent studies have suggested reported in this package are – that people who have elevated Plasma Plasma homocysteine levels have a much Tyrosine & FeCl3 test (Qualitative). greater risk of heart attack or package: 16 Vol 1 amino Phenylalanine, Recent studies have suggested that people who have elevated homocysteine levels stoke than those with average Tyrosinemia type – 2 disorder, levels. Vitamin B6, B12 and folate was suffering from watering of are metabolize eyes, epithelial haze, multiple, fine homocysteine and the patients pin point , dot shaped infiltrates who are deficient in these vitamins on corneas. On quantification by may HPLC tyrosine levels were found necessary have to increased levels of homocysteine. to be elevated [162 nmoles/ml - 5. Non Ketotic Hyperglycinaemia have a much greater (NKH) package: The amino acids risk of heart attack Plasma Glycine, CSF Glycine and or stoke than Glycine.It is an autosomal recessive those with average levels. reported in this package are ratio of CSF Glycine to Plasma inborn error of glycine metabolism. Being a glucogenic amino acid, it helps in supplying the body with glucose needed for energy, thereby regulating blood sugar levels. package: The amino acids reported in this package are - Plasma Leucine, Plasma Isoleucine and Plasma Valine. It is caused due to deficiency of branched chain alpha keto acid dehydrogenase complex (BCKDH). This disease is characterized in an infant by the presence of sweet smelling urine, with an odor similar to that of maple syrup. Keeping MSUD under control requires careful monitoring of blood chemistry and involves both a special diet & frequent testing. Saving Studies ml].The child was then treated with Tyrex – 2 powder (phenylalanine & tyrosine free) along with other diet as prescribed by the dietician. On follow up the blood tyrosine levels were found to be still elevated but compared to previous reports, they were low [128 nmoles/ml]. The patient was continued with the same diet and on follow up, the tyrosine levels are now found to 6. Maple Syrup Urine Disease (MSUD) reference range: 24 – 115 nmoles/ Lives:………Case be normal. Case 2: A 3 year old female presented with known case of Phenylketonuria, had history of developmental delay. She was on restricted diet and on quantitation by HPLC the phenylalanine levels were found to be normal. Later on she had difficulty in walking & talking. Eczema & skin rashes developed all over her body, also her hair color got changed from black to golden .On quantitation the phenylalanine levels were found to be elevated [994 nmoles/ ml - Reference range: 26 – 91 nmoles/ml, due to improper diet. She was then asked to follow the male diet strictly. On follow up, amino child presented with history of acid quantitation showed decrease Case 1: A 3 year old Lab Communique 17 The hidden impairments in phenylanine levels. susceptibility to occlusive arterial disease and many inherent Case 3: An 18 days old male child, disorders in amino acid metabolism. suffering from severe acidosis was The hidden impairments in amino admitted to hospital on day 3 of acid metabolism are problematic life. Blood gas analysis show severe & often go undiagnosed which metabolic acidosis & his respiratory may or may not be expressed problematic & often rate was increased. Blood ammonia as specific symptoms. They may levels urinary silently increase the susceptibility go undiagnosed Methylmalonic Acid was positive. to a degenerative disease or they which may or may Hence the clinician was suspecting may be associated with, but not Methylmalonic in amino acid metabolism are were elevated, (MMA) causative for, a disease. Hence which is a disorder of amino acid quantitative amino acid analysis metabolism involving defect in by HPLC is necessary in timely specific symptoms. conversion of methylmalonyl CoA diagnosis to succinyl CoA and this conversion metabolism and helps in thorough They may silently takes place in presence of vitamin nutritional and metabolic workup. increase the isoleucine, valine, methionine & Thus, Amino acid analysis by HPLC susceptibility to a threonine were low and the levels is adequate to suggest the diagnosis of tyrosine, leucine & phenylalanine of inborn errors of metabolism, due were elevated because patients to marked increase in the levels of with MMA have problems breaking amino acids in plasma, urine or or they may be down & using certain amino and CSF, thereby helping the clinicians fatty acids from food they eat. A to promptly initiate appropriate associated with, but specific diet was prescribed. On therapy for the patient. Hence there follow up after 4 months all the is a need to create awareness in not causative for, a amino acids were found to be general population on the ill effects normal. of inborn errors of metabolism not be expressed as degenerative disease disease. Aciduria of inborn errors of B 12.On quantitation the levels of Blood ammonia levels and the need to prevent them. were also normal. This would certainly benefit the Amino acid in diagnosis the protein adequacy society as a whole in reducing and dietary preventing psycho-social burden and amino of the medical consequences due to inborn errors of metabolism. intolerance, nutritional The concept that “metabolic minerals) or genetic disorders are very dysfunction, difficult to diagnose and if abnormalities, diagnosed, it is impossible to renal & reduced (vitamins, hepatic psychiatric Vol 1 aids of acid balance, forms of protein deficiencies 18 analysis detoxification capacity, treat” no more stands. Achievements DR. (MISS) TESTER FRAMROZE ASHAVAID Ph.D, FACB, CSi, PGDBA (Fin). • Principal Investigator for LTMT Institution award for 2 years “ Study of Indian genome to assess the risk factors in coronary heart disease ” , 2001. • Invited to Judge poster session at the 15th World Congress of International Society of Heart Research held at Winnipeg, Canada, from 6th – 11th July,2001. • Lady Tata Memorial Trust(LTMT) awarded Institutional grant for 18 months. For research project entitled “ Development of Multilocus Assay for Candidate Markers in Indian Patient s with Cardiovascular disease risk, (Sanctioned 2003) • Department of Biotechnology (DBT), Govt. of India awarded Institutional grant for 3 years research project entitled “The genetic basis of atherothrombotic coronary artery disease in the Indian population. (Sanctioned, 2003). • Applied Biosystems awarded SNP Genotyping reagents worth $3150 for research work on “Single Nucleotide Polymorphism and Risk of Coronary Heart Disease in the Indian Population”. {2003) • Daiichi Pure Chemicals (Japan) and Accurex Biomedical Pvt. Ltd India have supported a project entitled “Measurement of lipids, lipoproteins, and apolipoproteins in healthy Indian population”. (2003) • DBT Task force meeting held at Dept.of Biotechnology the research project entitled “ The genetic basis of coronary artery disease in Indian Population” (2005). • Appointed on the Inspection Committee of University of Mumbai to inspect the institutions for M.Sc, Ph.D. • Invited lecturer for MRCOG Part I (Biochemistry) conducted in UK. through teleconference in 2003. • Postgraduate guide to M.Sc. and Ph.D students in Applied Biology from University of Bombay. Email: [email protected] Contact No. 24451515 Extn - 7135 / 7136 Lab Communique 19 Laboratory Medicine Consultants From Left to Right: Dr. Anand Deshpande (Transfusion Medicine & Hematology), Dr. Chitra Madiwale (Histopathology & Cytopathology), Dr. Sharmila Ghosh (Hematology), Dr. Tester Ashavaid (Biochemistry), Dr. R. B. Deshpande (Histopathology & Cytopathology), Dr. Anita Bhaduri (Histopathology & Cytopathology), Dr. Camilla Rodrigues (Microbiology), Dr. Vipla Puri (Radioimmunoassay), Dr. Anjali Shetty (Microbiology) and Dr. Shanaz Khodaiji (Hematology). 20 Vol 1 Funded Research / Projects in the Department of Laboratory Medicine (July 2007 to Date) 1. LDL and HDL subfractions, their genetic basis and the role of 5-Lipoxygenase activator protein (FLAP) promoter polymorphism in Coronary Heart disease. Dr. Tester F. Ashavaid 2. Early detection of Invasive fungal infections in Immunocompromised patients Dr. Camilla Rodrigues 3. Molecular diagnosis of Cystic Fibrosis in Indian patients Dr. Tester F. Ashavaid 4. Role of Lipoprotein (a) in Atherosclerosis in Indian population Dr. Tester F. Ashavaid 5. Hepatitis G Virus and occult hepatitis B infection in healthy blood donor population Dr. Anand Deshpande 6. A comparison of private and public healthcare’s effect on tuberculosis epidemic in Mumbai, India. Dr. Camilla Rodrigues 7. Role of Matrix metalloproteinase gene variants in Indian patients with coronary artery Dr. Tester F. Ashavaid 8. To improve the diagnosis of Autoimmune Hepatitis. Dr. Anand Despande 9. Hospital Acquired Pneumonia (HAP). Including Ventilator associated Pneumonia (VAP) in Adults:-Etiology clinical outcome and antibiotic susceptibility pattern. Dr. Camilla Rodrigues 10. Optimization of multiplex PCR for diagnosis of TB from clinical samples and evaluating the utility of MIRU VNTR in genotypic and phylogenetic studies’ Dr. Camilla Rodrigues 11. Monitoring of minimal residual disease in ALL’. Dr. Sharmila Ghosh 12. TB specific CD4 and CD8 T cell responses in the presence of persistent antigen - Does prolonged in vivo exposure of TB specific T cell to MTB antigen lead to a level of dysfunction in TB specific T cells? Dr. Camilla Rodrigues 13. Direct susceptibility tesing of M.Tuberculosis with BACTEC MGIT 960 system Dr. Camilla Rodrigues 14. Invitro susceptibility testing to anti tubercular experimental compounds. Dr. Camilla Rodrigues Lab Communique 21 Fibroblast Growth Factor 23 (FGF 23) in Bone Kidney Axis FGF 23 has emerged as an important phosphate balance and as such moderator in the physiology of also a potential uremic toxin. phosphate homeostasis. Renal disorders More recently, FGF 23 has been leading to hypophosphatemia are implicated as an excellent indicator among the causes of defective of the complex derangements of mineralization of bone and growth Calcium plate development. induced by chronic kidney disease phosphate wasting Dr. Vipla Puri, Ph.D and Phosphate probably also metabolism a valuable Given the dramatic increase in surrogate skeletal size during growth, the deranged mineral metabolism. parameter of the need to preserve skeletal mass during adulthood and the large Sensitive measurement of human capacity of bone to store calcium FGF and phosphate, a complex systems considered biology has evolved that permits diagnostic tool for the evaluation of cross-talk patients with a variety of different between bone and 23 in circulation as an is now important other organs to adjust phosphate hypophosphatemic disorders balance and bone mineralization in including oncogenic osteomalacia, response to changing physiological X-linked hypophosphatemic rickets, requirements. bone and mineral homeostasis, and early and advanced renal FGF 23 is a recently identified failure. FGF 23 has also been ‘Phosphatonin’ that is implicated implicated as a predictor of the in systemic balance of phosphate risk of mortality in the first year of maintained hemodialysis and in patients with by interaction of intestines, bone and kidneys. renal transplant. In excessive We, at Hinduja Hospital are the results first to start this test since it is low now established that FGF 23 is 1,25-Dihydroxy Vitamin D3 levels also an important marker for the and osteomalacia. Circulating FGF- therapeutic approach in Chronic 23 is a physiological regulator of Kidney Disease patients. clinical activity in of settings, FGF 23 hypophosphatemia Dr. Vipla Puri, Consultant Radioimmunoassay, Ph.D - Consultant RIA Laboratory Email: [email protected]. Contact No. 24451515 Extn - 7148/7149 22 2009 Vol 1 Vol 1 No. 1 Help prevent thalassemia – Jago re ….. Dr. Sharmila Ghosh MD – Pathology Thalassemia refers to a spectrum high among certain communities of such diseases characterized by as Sindhis and Punjabis the reduction or absence in the from Northern India, Bhanushalis, synthesis of the globin chains Kutchis, Lohanas from Gujarat, of hemoglobin. The disease was Mahars, Neobuddhists, Kolis and first noted in the Mediterranean Agris from Maharashtra, & Gowdas population, and this geographical and Lingayats from Karnataka etc. association explains its naming by and certain tribes in the northern, Whipple and Bradford in 1932 as western and eastern parts, with “Thalassa” which in Greek means lower incidence in the southern the sea and “Haema” is Greek for tribes. There is a genetic, ethnic blood. and regional diversity of the hemoglobin variants as well as of Worldwide, approximately 15 the genetic mutations in India. million people are estimated to suffer from thalassemic disorders. Reportedly, there are about 240 million carriers of b- thalassemia worldwide, i.e. 1.5% of world population, and in India alone, the number is approximately 30 million with 50% in S.E.Asia. The burden of hemoglobinopathies in Thalassemia exists in 3 forms: • Thalassemia asymptomatic trait or carrier the stage– The carrier does not exhibit any symptoms and leads an absolutely normal life • Thalassemia intermedia– India is high with nearly 12,000 Genotypically infants being born every year with similar to a thalassemia major a severe disorder. These numbers but differs phenotypically in imply that every hour 1 child is that they do not require regular born who will suffer with this transfusions the patient is genetic disorder. The carrier rate for b thalassemia varies from 1-17 • Thalassemia major– major, In % in India with an average of 3.2 %. thalassemia This means that on an average 1 in production of -globin chains is every 25 Indians is a carrier of severely impaired, because both thalassemia. The distribution of β-globin genes are mutated. the thalassemia gene is not uniform The severe imbalance of globin in India and the prevalence is very chain synthesis results the in Dr. Sharmila Ghosh, Consultant Hematology, MD – Pathology. E-Mail: dr_ [email protected] Contact No. 24451515 Extn - 8013/8014 Lab Communique 23 The cost of treatment ineffective erythropoiesis and child with beta thalassemia trait. severe microcytic, hypochromic These are the possible outcomes anemia. Clinical presentation of with each pregnancy. thalassemia major occurs at 6 of a 4-year-old months of age. Affected infants fail thalassemic child is to and become of having a child with beta pale. Feeding thalassemia trait thrive progressively around Rs.90,000- problems, diarrhea, irritability, 100,000 annually. progressive enlargement of the The only cure may occur. Patients are treated recurrent bouts of fever, and • 50 percent (1 in 2) chance of having a child without trait abdomen due to splenomegaly by lifelong blood transfusion available today every 15 to 30 days along with is bone marrow iron chelation therapy. transplantation old thalassemic child is around which is largely The only cure available today unaffordable to the which is largely unaffordable to The cost of treatment of a 4-yearRs.90,000-100,000 annually. is bone marrow transplantation the large majority of the Indian large majority of the Indian children. • 50 percent (1 in 2) chance children. Prevention of thalassemia – the need of the hour. What if both parents have Beta Thalassemia trait? If both parents have beta There is an urgent need for the thalassemia trait there is a 25 prenatal diagnosis of thalassemia percent (1 in 4) chance with each to pregnancy of having a child with combat the burden of hemoglobinopathies in India. Beta Thalassemia disease. Beta Thalassemia autosomal Thalassemia disease is a lifelong which illness that can result in serious recessive is an disorder is inherited from parents. health problems. These are the possible If one (1) parent has beta outcomes with each pregnancy. thalassemia trait and the other 24 Vol 1 parent has normal hemoglobin A, • 25 percent (1 in 4) chance there is a 50 percent (1 in 2) chance of having a child with beta with each pregnancy of having a thalassemia disease At Hinduja Hospital, we have the facility for the screening of • 50 percent (1 in 2) chance • Antenatal women in their first of having a child with beta thalassemia trait trimester • Parents and extended family of • 25 percent (1 in 4) chance of having a child without trait or disease thalassemia major children • Individuals belonging to the high-risk communities • Any individual with a raised hemoglobin variants RBC count by the Cation- In the screening for classical exchange HPLC beta thalassemia trait, the first (CE-HPLC) system the classical which is currently the hypochromic red blood cells and the red cell indicator is the blood film with phenotype being microcytic indices showing a reduced mean the method of corpuscular hemoglobin (MCH) choice for screening and mean corpuscular volume hemoglobinopathies presence of an elevated level of and has been quantified by the high performance established to be superior to electrophoresis. (MCV). The hallmark is the Hb A2 which can be detected and liquid Thalassemia huge the gold standard technology for psychological and financial drain the screening of beta thalassemia on patients and their families. carriers today. This produces dreaded disease a chromatography(HPLC), can be At Hinduja Hospital, we have prevented by extensive screening the and counseling programmes. All of hemoglobin variants by the it takes is a simple blood test to Cation-exchange HPLC (CE-HPLC) identify silent carriers and counsel system which is currently the them so as to avoid marriages method of choice for screening between them. hemoglobinopathies Who then should be screened for thalassemia? • Pre-marital youth (18-25 years of age) facility for the screening and has been established to be superior to electrophoresis. Highlights of this method: • Fully automated Lab Communique 25 CE-HPLC system in Hinduja Lab • Allows the quantification of HbA2, HbF, HbA along with that HPLC generated chromatogram of hemoglobin variants HbS, HbD, HbE, HbC from a single test. • The time taken for analysis is only 6 minutes. which ensures the accuracy of results. • CE-HPLC for and can also prenatal prenatal Vol 1 pediatricians, infrastructure for screening hemoglobinopathies by the HPLC technology. Community awareness used programmes will not only help to screening spread knowledge of the disease be diagnosis hemoglobinopathies. 26 obstetricians, backed by excellent laboratory • Strict attention is paid to quality control It is a combined effort involving of but also remove the social stigma associated with thalassemia. Achievements Dr Sharmila Ghosh MD. Consultant, Hematology Awarded scholarship by the international jury for the International Society of Pediatric Oncology (SIOP) for participation and paper presentation at the regional and annual congress of SIOP, held at Shanghai and Geneva, 2006. Member of the organizing committee and faculty for SIOP 2007, held at Mumbai. Publications: More than 20 publications in peer reviewed journals ECFMG award for best post graduate speaker Life Member • Indian Society of Hematology and Blood Transfusion • Flow Cytometry Society • Mumbai Hematology Group E-Mail - dr_ [email protected]. Contact No. 24451515 Extn - 8013/8014 Lab Communique 27 New Tests Introduced Hematology APTT Inhibitor Screen Blood lympho culture by cell culture Jak 2 mutation by PCR Qualitative Blood Bank Cross matching & RBC ab screening HCV genotyping Biochemistry DPD Mutation analysis TPMT mutation analysis DMD 22 mutation analysis Biotinidase Microbiology/Serology Culture NTM atypical Mycobacterium Influenza Antigen Scrub Typhus IgM RIA Lab Glutamine Histamine Plasma Metanephrine Plasma Nor Metanephrine Fibroblast growth factor 23 BAL Fluid CD4 C8 Counts For a price list and more information please contact the Assistant Manager Diagnostic Services, Dr. Preeti Goraksha at 24451515 Ext 7142 / Chetna Patil, Quality Co-ordinator at 24447943 Ext 7143 Printed and Published by Marketing Department Hinduja Hospital, Veer Savarakar Marg, Mahim, Mumbai - 400016 at Synergy Creations for free and private circulation. Editor: Dr. Anita Bhaduri. Registered. (The publisher cannot be held responsible for errors or any consequences arising from the use of the information contained in this newsletter). 28 Vol 1