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KENDRIYA VIDYALAYA, HEERAPATTI, AZAMGARH Some Important Bacterial Diseases S.No . 1. Disease Pathogen Epidemiolog y Airbone and droplet infection Incubatio n period 2-10 weeks Symptoms Pulmonary Tuberculosis Mycobacterium tuberculosis 2. Diphtheria Corynebacteriu m diphtheriae Airbone and droplet infection 2-6 days Cholera Vibrio cholerae 6 hours to 2-3 days 4. Leproxy (Hansen’s disease) Mycobacterium leprae Direct and oral (with contaminated food and water) Slowest infectious and contagious Inflammation of mucosa of nasal chamber, throat etc, respiratory tract blocked Acute diarrhea and dehydration 3. 5. Pertussis (whooping cough) Tetanus (Lock jaw) Bordetella pertussis Contagious and droplet infection Through injury 7-14 days 7. Plague Pasteurella (or Yersinia) pestis Indirected and inoculative (vector is rat flea) 2-6 days 8. Gonorrhoea Syphilis 10. Salmonellosi s Sexual transmission Sexual transmission Direct and oral 2-10 days 9. Neisseria gonorrhoeae Treponema pallidum Salmonella enteridis 6. Clostridium tetani 2-5 years 3-21 days 3 weeks 48 hours Prophylaxi s BCG vaccine isolation, health education Coughing, chest pain and bloody sputum with tuberculin DPT vaccine Skin hypopigmentation , nodulated skin, deformity of fingers and toes, lepromin in skin tests Whoops during inspiration Degeneration of motor neurons, rigid jaw muscles, spasm and paralysis Bubonic plague affects lymph nodes; Pneumonic plague affects lungs and septicemic plague causes anaemia Inflammation of urinogenital tract Inflammation of urinoenital tract Diarrhoea Therapy Streptomycin , para-amino salicylic acid, rifampicin etc. Diphtheria antitoxins, penicillin, erythromycin Sanitation, boiling of water and cholera vaccine Isolation Oral rehydration therapy and tetracycline DPT vaccine Erythromycin ATS and DPT vaccines Tetanus antitoxins Killing of rats and ratfleas, plague vaccine Tetracycline, streptomycin , chloromyceti n Avoid prostitution Avoid prostitution Isolation Penicillin and ampicillin Tetracycline and penicillin Antibiotics Dapsone, rifampicin, clofazimine Some other Important Viral Diseases S.No . 1. Disease Pathogen Chickenpox (Varicella) 2. Smallpox (Variolla) 3. Poliomyelitis Herpeszoster virus (DNAvirus) Variolavirus (DNAVirus) Polio-virus (RNAvirus) 4. Measles (Rubeolla disease) Rubeollavirus (RNAvirus) Epidemiolog y Contagious and Formite borne Incubatio n period 12-20 days Contagious and Droplet infection 12 days Direct and Oral 7-14 days Contagious and Droplet infection 10 days Symptoms Dark red coloured rash or pox changing into vesicles, crusts and falling Appearance of rash changing into pustules, scabs and falling Damages motor neurons causing stiffness of neck, convulsion, paralysis of generally legs Rubeolla (skin eruptions) coughing, sneezing etc. Prophylaxi s Now vaccine available, isolation Therapy Smallpox vaccine No case reported after 1978 ‘Salk’ vaccine and oral polio vaccine Physiotherapy EdmonstonB-vaccine, isolation Antibiotics and sulpha drugs Zoster immunoglobulin s (ZIG) 5. Mumps Mumpsvirus (RNAvirus) Rabies virus (RNA virus) 6. Rabies (Hydrophobia ) 7. Trachoma Chlamydia trachomati s 8. Influenze (Flu) Myxovirus influenzae (RNA virus) 9. Hepatitis (epidemic jaundice) Hepatitis-B virus Contagious and Droplet infection 12-26 days Indirect and inoculative (vectors are rabid animals monkeys, cats, dogs) Contagious, formite-borne and flies (vectors) Air borne and pandemic 10 days 1-3 months Direct and oral (with food and water) 20-35 days 5-12 days 24-48 hours lasts for 4-5 days Painful enlargement of parotid salivary glands Spasm of throat and chest nmuscles, fears from water, paralysis and death Inflammation of conjunctiva and cornea leading to blindness Bronchitis, sneezing bronchopneumoni a, leucopenia, coughing etc. Damage to liver cells releasing bilirubin which causes jaundice Mumpsvaccine isolation Antibiotics Immunizatio n of dogs Pasteur treatment (14 vaccines in stomach) Isolation Tetracycline and sulfonamide Isolation Antibiotic therapy Proper sanitation, proper coverage of food, water, milk etc. Use of chlorinated or boiled water etc. Hepatitis-B vaccine Types of Plasmodium Spp. And Malaria S.No. Type of Malaria Period of attack Distribution 1. Plasmodium spp. P. vivax Benign tertian malaria 2. P. ovale Mild tertian malaria After 48 hours (every 3rd day). Not fatal After 48 hours 3. P. malariae 4. P. falciparum Quartan malaria (also called sub-clinical malaria) Quotidian malaria or Malignant tertian (most serious) or Irregular malaria Tropical and temperate. Most common malaria West Africa and South America Tropical and Temperate After 72 hours (every 4th day) Daily After 48 hours Not fixed Tropical Some Interesting Fact About Immune System for Competitive Examinations : • Antigen : Antibody-generating agent. • Serology : Study of antigen-antibody interaction. • B-lymphocytes produce antibodies at the rate of 20 trillions per day. • Life-span of B-lymphocytes is of a few days, while that of T-lymphocytes is about 4 or 5 years or more. • Primed cells : Memory cells and are modified suppressor T-lymphocytes. • Epitopes : Multiple antigenic determinant sites in an antigen, while paratropes are antigen – binding sites of the antibody. Paratrope lies on Fab (Fragment antigen binding). • Two important groups of antigens are : ABO – system and Rh – system. • A vaccine acts as an antigen and antibody – provoking agent. • Five classes of antibodies : IgG : It is most abundant (80% of total antibodies) immunoglobulin mainly found in serum. It is a Y-shaped tetrapeptide protein formed of two identical light chains (each of 214 amino acids) and two identical heavy chains (each of 440 amino acids). Three disulphide bonds • interlink these chains : two between light and heavy chains and one between heavy chains. These have the properties of transplacental transfer and binding ability to macrophages. Mol. Wt. of IgG is 150,000. It is mainly involved in extracellular defence. It is a -globulin protein. IgG acts as opsonin. IgA : It is second most abundant immunoglobin (10-15%) with a mol. Wt. of 160000. It is a dimmer molecule in which two -polypeptide chains are linked by J-polypeptide chain. It is found in saliva, tears, colostrum, etc. It guards the mucosal surfaces. It is first antibody type to be formed inside human body at about age of 4 months. IgM : It is a polymer of five tetrameric peptide immunoglobin molecules interlinked by disulphide bonds. It is called macro-globulin as has highest mol. Wt. (i.e. 900000). It is found on surface of B-cells. IgD : It is formed of four delta-peptide chains. IgE : It is formed of epsilon heavy chain and is found in mast cells of tissues and serum. It is least in amount. If triggers inflammatory response. It also mediates in allergic reactions. Inflammatory response. It also mediates in allergic reaction. ELISA-test : Enzyme linked Immunosobent Assay : A sensitive test for detection and quantitation of antigens and antibodies. • SAFA – test : Solid Antigen Fluorescent Antibody Test : It is a modification of ELISA test in which fluorescent – labeled antigers are used and interactions can be visualized. • Cytokines : These are soluble non-antibody proteins released by cells of immune system e.g. interleukin-I produced by macrophages; perforin secreted by killer T-cells. • Joseph Miester : First person to be given antirabies vaccine. • Toxinosis : Lesion caused by the action of a toxin. • Types of Diseases : Endemic disease (En = in; demos = people). Regular occurrence of a disease in a given geographic area or a population group e.g., common cold, sleeping sickness. Exotic diseases. Disease which is imported into a country in which it does not occur e.g. Rabies in U.K. Zoonosis : An infectious disease spread from verlebrate vector to man e.g. Rabies. Epizootic disease : Occurrence of disease in only a few individuals widely separately in space and time showing little or no connection e.g. polio, tetanus etc. Pandemic disease. An epidemic usually affecting a large population over wide geographic area like nation, a continent or world e.g., Influenza pandemic of 1918 and 1957; Cholera in 1962 and now AIDS. Some Interesting Facts about Cancers for Competitive Examinations : • Arneoplastic cells : Cancer cells undergoing abnormal and uncontrolled growth. • Oncology : Study of all aspects of cancer. Oncologists : Scientists involved in the cancer research. • Oncoviruses : Tumour causing viruses. • In India, most common cancer type of human males is mouth-throat while that of human females is uterine-cevical cancer (accounts for about 80% of all cases). According to 1988 report, in Delhi and Mumbai most common cancer type in human females is breast cancer. In Delhi one in 40 women is affected with breast cancer. At the world level, breast cancer is most common. • Nearly 40 per cent of cancer cases in India can be attributed to some form of tobacco use. • Fried and salty food, chutney and high use of chillies raise the cancer risk, while increased use of vegetables and fruits reduce the risk. • Fine Needle Aspiration (FNA) is technique to draw very deeply located tissue for their biopsy and histological examinations. • Pap’s test : To detect cervix cancer. • Brachytherapy : A special radiotherapeutical technique in which a very high doze of radiation is given to small volume of body tissues in short period from small radioactive source like Radium, Cobalt-60; Iridium-192 etc. Another advanced technique of radiation therapy of cancer is Intensity Modulation Radiotherapy (IMRT) in which non-uniform beams are fired the affected organ from several angles to deliver desired doses to the tumour while minimizing dose to surrounding organs. • Marry Collins : Developed the gene therapy for skin cancer. He genetically engineered the tumour cells with a protein called Interleukin-2. Inside the body, tumour cells released Interleukin-2 which stimulates the WBCs to attack cancer cells in the skin. • China has developed the world’s first officially licensed ‘gene therapy’ to treat cancer. • Former Miss World and Bollywood actress Aishwarya Rai is acting as a goodwill ambassador to raise funds for the recently launched (October 2004) campaign called ‘Pink Ribbon’ against Breast Cancer. • Pink Ribbon is an international symbol for support for breast cancer awareness. • About 80,000 new cases of breast cancers are detected every year in India. It is estimated that one in 22 Indian females is likely to develop breast cancer. • Ashwagandha roots ans leaves of Tulsi (Ocinum) have anti-cancer properties. • New Cancer Drugs : • Photoferrin : Developed in USA and useful against throat cancer. Doxorobocin : Commonly called Doxil and has anti tumour ingredient. Smart bomb : Dr. Raj Puri, A US based Indian scientists has reported that ‘smart bomb’ can be used in cancer therapy. Smart bomb is formed of a cancer killing drug linked to an immune substance called interleukin-13 which binds the specific receptors present on tumour cells of brain tumours, kidney tumours and AIDS related Kaposi’s sarcoma. Prof. Sir Alfred Cuschieri : Developed key hole surgery to fight cancer. • Tata Memorial Research Institute, Mumbai is Indian Institute for cancer treatment. • He La cells : Cancer cells capable to propagate outside a living system. These are named after their donor, Henrietta Lacks, who dies of cervical cancer in 1951. • Ames Test : It is a routine screening test developed by Bruce Ames to know the mutagenicity and carcinogenic nature of a substance. • Adjuvant chemotherapy is the technique of using several drugs at the same time. • There are three primary types of lung cancers – Bronchiogenic carcinoma (most common, 90%), Alveolar carcinoma and Pleural mesothelioma. • Leukemias are of three types : Lymphocytic leukemia (increase in number of lymphocytes, enlargement of lymph nodes, etc.), Granulocytic leukemia and Monocytic leukemia. Four Types of Psychotropic Drugs S.No. 1. Type of Drug Sedatives tranquillisers (depressant) 2. Opiate narcotics Opium, morphine, heroin, pethidine, methadone 3. Stimulants 4. Hallucinogens Caffeine (very mild), cocaine and its derivative Novacaine, amphetamines. (including dexamphetamine) LSD, mescaline, psilocybin, charas, bhang, marijuana and Examples Benzodiazephines barbiturates. (e.g. Vali-um), Effects Depress brain activity and produce feelings of calmness, relaxation, drowsiness and deep sleep (high doses) Suppress brain function, relieve intense pain, produce temporary euphoria Stimulate the nervous system, make a person more wakeful, increase alertness Alter thoughts, feelings and perceptions; hallucinations Sources of Psychotropic drugs s.no. 1 2 3 4 5 6 drugs tobacco Benzpyrene opium Morphine codeine Heroin(diacetylmorphine) Caffeine 7 8 9 10 Cocaine LSD Bhang Ganja source Nicotiana tabaccum,Nicotiana rustica Nicotiana tabaccum,Nicotiana rustica Papaver somniferum Papaver somniferum Papaver somniferum Thea chinesis,Coffea arabica,Theobroma cacao Erythroxylon coca Claviceps purpurea Cannabis sativa, Cannabis indica Cannabis sativa, Cannabis indica 11 12 Charas/ hashish Marijuana Cannabis sativa, Cannabis indica Cannabis sativa, Cannabis indica Part of source leaf extract Unripe capsule processed Acetylation of morphine Leaves & twigs Leaves Unfertilized female inflorescence Flowering top Dried flowering plant Certain Addictive Drugs and their Common Names S.No. 1. 2. 3. 4. 5. 6. 7. 8. 9. Addictive Drugs Lysergic Acid Diethylamide (LSD) Phencyclidine Piperidine (PCP) Diacetylmorphine hydrochl-oride Cocaine Barbiturates Marijnana Concentrated Tetrahydro cannibinol Psilocybin Amphetamines Common Names Acid Angel dust Brown sugar Coke Downers (sleeping pills) Grass Hash Magic mushroom Speed Differences between Depressants and Stimulants S.No. 1. 2. 3. Depressants These decreases the activity of central nervous system. Effects-These induce calming effects, relaxation, drowsiness and generally induce sleep. Example-Benzodiazephines and barbituric acid S.No. 1. 2. 3. Stimulants These increase activity of central nervous system. Effects-These induce excitement, alertness, more wakefulness and inhibit sleep. Examples-Caffeine, coaine and amphetamines Interaction of Alcohol and Drug S.No. 1. 2. 3. 4. Alcohol-drug combination Alcohol + Barbiturates (depression) Alcohol + antihistamines Alcohol + valium (Benzodiazepine) Alcohol + marijuana or Hashish 5. 6. 7. 8. 9. Alcohol + Aspirin Benzodiazapines + Barbiturates Amphetamine + Insulin Nicotine + Cocaine Cocaine + Antideressants Biological effects Increased depressant effect Marked drowsiness Dramatic increased sedative effect Decreased coordination, increased reaction judgement Increased chances of damage to gastric mucosa Increased sedation Decreased insulin effect Increased cardiovascular effects Hypertension time, impaired Some Interesting Facts abut Problems of Adolescence for Competitive Examinations : A. TOBACCO ADDICTION : • Tobacco smoke mutates and inactivates P-53 gene which checks cancer growth. • Byssinosis : Acute bronchitis associated with generalized airflow obstruction. • 1996 – Olympics held in Atlanta (USA) had been declared smoke free. • Health Care Foundation of India (HCFI) has suggested that tobacco should be treated like any other narcotic as regular nicotine use may also lead to addiction. • In India, graph of smokers sky rocketed by 400 per cent during 1970-80 period done. Meanwhile, a six fold increase in mortality from bronchitis and emphysema was also noted in India. • An ‘Anti tobacco Bill’ has been long pending before parliament. • One out of 20 children are templed by the cigarette advertisements. • India is one of the top consumers of cigarette. Over 142 million men and 37 million women above 15 years of age are regular smokers. • Lung cancer mortality risk for a heavy smoker is 20-30 times greater than that of a nonsmoker. • Central Tobacco Research Institute is located at Rajahmundry (A.P.). B. ALCOHOLISM : • Alcoholism is a disease was declared by WHO in 1964. • Breath test : To estimate the blood alcohol by the analyzing the breath of an alcoholic. • Hangover : Mild effects of alcohol even after long period of its consumption. • Polyneuropathy : A degenerative disease of nervous system associated with chronic alcoholism. • On the effects of alcohol on sexual behaviour, William Shakespeare stated ‘It provokes the desire but it takes away performance.’ C. DRUG ADDICTION : • Analgesics : Which induce relief from pain e.g. Aspirin, Ibuprofen, Morphine, etc. • Rhinorrhoea : Excess watery discharge from the nasal mucosa. • Lacrimation : Excess secretion of tears. • Analeptic drugs : Respiratory stimulants. • Caffeinism : Caffein intoxication characterized by restlessness, nervousness, excitement, insomnia, gastrointestinal disorders, etc. • Stimulants do not cause physical dependency so person does not show withdrawal symptoms, but these cause phychological dependency so their withdrawal causes depression, anxiety and restlessness. • Now drug abuse is no longer limited to traditional laser groups like slum dwellers, industrial workers etc. but has spread its tentacles even in young and adolescent children and youth. • Antidote : A substance which is used to counter the effect of poisons e.g. alkali against acid poisoning. • Antihistaminic drugs : Used against allergic problems e.g. Avil, Actifed. • Phocomelia : Child born with seal like underdeveloped limb by a woman who consumed that drug thalidomide widely used in sleeping pills in 1960s. • Use of LSD and other hallucinogens increased by 54%. Cocaine use increased by 168%. Use of marijuana increased by 37%. Main Barbiturates : Seconal, Nembutal (Pentobarbitol); Tuinal, Amytal (Amobarbital), Phenobarbital etc. • Main antipyretics : Paracetamol (crocin, metacin). • Stimulants are also called anti depressanta/mood elevators/superman drugs. • Examples of Amphetamines : Benzedrine, Dexedrine and Methedrine. • International Day against Drug Abuse and Illict Trafficking : 26th June. • Drug traffic : Illegal sale of dangerous drugs. • Benzodiajaphines are more effective than barbiturates in relieving anxiety than in inducing sleep. • Hypnotic effect : Calming effect of barbiturates. • Narcotics are most powerful pain killers but these should be used with great caution as these cause addiction. • Methadone : A synthetic narcotic drug and is most effective form of treatment for addiction to heroin and other narcotics. • Mescalin : Also called trimethoxy phenethylamine. It is a naturally occurring alkaloid and is derived from the flowering heads of Lophophora williamsii. It is second most common hallucinogenic drug use. • Psilocybin : It is derived from two Mexican mushroom species : Psilocybe Mexicana and Stropharia cubensis, commonly called magic mushrooms. • IV-drug : Any drug which is taken intravenously and includes addictive narcotic drugs like heroin. • Phencyclidine : Drug used to control ‘rogue elephant’. • Pierre Jean Robiquei (1832) : First to isolate codein from opium. • Psiolocybe Mexicana is a sacred mushroom and is called God’s flesh. • Heroin is commonly called dynamite, while amphetamine is called speedball. • Cocktail : When cocaine is deliberately mixed with other drugs like barbiturates, cocaine etc. to experience a sudden kick. Name Raw Material Fruit Apple Juice + Sugar Barley (Malt) Grape juice Grape juice Grape juice 3-6 4-5 4-5 7-13 8-10 Grape juice Palm sap Coco palm, rice 18-24 - 1. 2. 3. Undistilled Alcohols (Simple Fermentation Products) Cider Beer Claret (Red Wine) Champagne (White wine) Port (heavy, sweet, fortified wine, dark red or white) Sherry (fortified wine, pale gold to dark brown) Toddy Arrack Distilled alcohols (Distilled fermented wines to raise strength) Hollands Gin Brandy %age of alcohol 3 to 24% 40 40-45 40-50 4. Whisky 5. 6. 7. Rum Vodka (used in Russia) Sake (used in Japan) Rye Barley Apple, peach and cherry juice Barley, rye, maize, potatoes Molasses Rye Rice A. 1. 2. 3. 4. 5. 6. 7. 8. B. 40-50 45-55 45-55 40-55 Some Important Antibiotics and Source Produced by Actinomycetes. S.No. 1. 2. 3. 4. Name of antibiotic Aureomycin (tetracycline) Erythromycin Neomycin Streptomycin From which derived Streptomyces Streptomyces erythreus Streptomyces fradiae Streptomyces griseus 5. 6. 7. 8. 9. Carbomycin Novobiocin Amphotericin B Terramycin (Oxytetracycline) Chloromycetin (Chloramphenicol) Streptomyces Streptomyces Streptomyces Streptomyces Streptomyces halstedii niveus nodosus rimosus venezuelae Some Antibiotics and Source Produced by Bacteria. S.No. 1. 2. 3. 4. Name of Antibiotic Bacitracin Gramacidin Tyrothricin Polymyxin-B Bacterial Source Bacillus subtilus B. brevis B. brevis Aerobacillus polymyxa Few Antibiotics Produced from Fungi S.No. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Antibiotic Ustilagic acid Ramaicin Fumigalin Saurvic acid Proloferin Baccatin Campestrin Penicillin Griseofulvin Cephalosprin Micro-organism Ustilago maydis Mucor ramannianus Aspergillus fumigatus A. niger A. proliferans Gibberella baccata Psalliota campestris Pencillium notatum P. Grisoefulvin Cephalosporium acremonium Microbial Source and uses of Organic Acids S.No. 1. Organic Acid Lactic acid 2. Citric acid 3. Itaconic acid Oxalic acid Koji acid Acetic acid A. terreus (fungus) Butyric acid Clostridium butylicum (bacterium) 4. 5. 6. 7. Microbial source Uses Lactobacillus bulgaricus, L. delbrueckii and Streptococcus lactis (Bacteria) Aspergillus niger (fungus) Curdling of milk proteins. A. niger (fungus) A. oryzae (fungus) Acetobacter aceti (bacterium) Confectionery, dyeing, medicine, silvering mirror etc. Plastic and glass industries and jewelry In medicines and many industries As antiseptic Used as vinegar in preparation of pickles, also used to preserve vegetables and meat - Microbial Source and use of Enzymes S.No. 1. Enzyme Lipases 2. Proteases and pectinases Streptokinase 3. Microbial source Candida lipolytica (fungus) Aspergillus niger (fungus) Streptococcus (bacterium) Uses Used in detergents to remove the oil stains from the laundry. Also in flavoring of cheese For clarification of fruit juices Used as a ‘clot buster’ to dissolve the blood clot in the blood vessels of the patients 4. Glucose oxidase 5. Invertase 6. -amylase 7. Dextran 8. Cyclosporin A 9. Statins Penicillium chrysogenum (fungus) Saccharomyces cerevisiae (yeast) Rhizopus japonicus and R. oryzae (fungus) Leuconostoc mesenteroides Trichoderma polysporum Monascus purpureus suffering from myocardial infarction, so is fibrinolytic. Hydrolysis of sucrose, so also called sucrase Digestion of starch and preparation of soft centered candles. Also in softening and sweetening of bread Polymerization of simple sugars to form dextrin. Immunosuppressive agent in transplant Blood cholesterol lowering agent organ OTHER IMPORTANT MICROBES S NO. 1 2 3 MICROBES CATEGORY IMPORTANCE Propionbacterium sharmanii Saccharomyces cerevisiae Methanobacterium bacteria Fungus- yeast bacteria 4 5 6 7 Bacillus thuringiensis Trichoderma Baculoviruses bacteria fungus Large holes in swiss cheese Beverages,Bakery Anaerobic sludge during sewage treatment, rumen of the cattle GMO Bt cotton Biocontrol agent Biocontrol agent( root ecosystem) Biocontrol agent Baculoviruses are pathogens that attack insects and other arthropods. The majority of baculoviruses used as biological control agents are in the genus Nucleopolyhedrovirus. These viruses are excellent candidates for species-specific, narrow spectrum insecticidal applications. They have been shown to have no negative impacts on plants, mammals, birds, fish or even on non-target insects. This is especially desirable when beneficial insects are being conserved to aid in an overall integrated pest management (IPM) programme, or when an ecologically sensitive area is being treated.