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Sunday 22nd December: PSA1
Sunday 22nd December: PSA1

... failure. He is taking several medicines, including digoxin (dose 0.125 mg daily according to the referral letter). He is struggling to take his medicines and, where possible, prefers to take these in liquid form. Digoxin is provided as an elixir of strength 50 micrograms/mL. ...
Stribild
Stribild

...  Immune reconstitution syndrome: May necessitate further evaluation and treatment. (5.8) --------------------------------ADVERSE REACTIONS----------------------------Most common adverse drug reactions to STRIBILD (incidence greater than or equal to 10%, all grades) are nausea and diarrhea. (6.1) To ...
Relationship between plasma and brain levels and
Relationship between plasma and brain levels and

... The aims of the present research were to characterize the plasma and brain concentration – time profiles of lamotrigine after its acute administration and to establish the relationship between these profiles and the anticonvulsant effect of lamotrigine in rats. Adult male Wistar rats were given 10 m ...
NIMBEX (cisatracurium besylate) Injection This drug should be
NIMBEX (cisatracurium besylate) Injection This drug should be

... Long-term infusion (up to 6 days) of NIMBEX during mechanical ventilation in the ICU has been evaluated in two studies. In a randomized, double-blind study using presence of a single twitch during train-of-four (TOF) monitoring to regulate dosage, patients treated with NIMBEX (n = 19) recovered neur ...
Cytochrome P450 Genotyping
Cytochrome P450 Genotyping

... needed, by trial and error, clinical consequences may include a prolonged time to optimal therapy. In some cases, serious adverse events may result. Various factors may influence the variability of drug effects, including age, liver function, concomitant diseases, nutrition, smoking, and drug-drug i ...
HIGHLIGHTS OF PRESCRIBING INFORMATION These
HIGHLIGHTS OF PRESCRIBING INFORMATION These

... In the randomized withdrawal study (Study B), the adverse reaction in patients randomized to placebo (n=160) and reported in at least 5% of patients and twice that of the full-dose memantine treatment group (n=157) was irritability (5.0% vs 2.5%). In a juvenile animal study, male and female juvenile ...
Pharmaceuticals and the Elderly - WHO archives
Pharmaceuticals and the Elderly - WHO archives

... Summary The number of elderly is increasing over the world. It is estimated that by the year 2020 the proportion of people aged 60 and over will be 25% worldwide. The ageing process in Europe is even at a higher level.1, 2 The ageing of the society comes along with several specific problems. The inc ...
Diuretics
Diuretics

... Na Excretion 155 mEq/day From Knauf & Mutschler Klin. Wochenschr. 1991 69:239-250 ...
Bossong et al 2005 proefprint AB-2
Bossong et al 2005 proefprint AB-2

... 2001, 2003; Feuchtl et al., 2004), whereas migraine and panic attacks are observed frequently as severe negative effects (Gijsman et al., 1998, 2004). Interestingly, MDMA-users (McCann et al., 1999) and cocaine addicts (BuydensBranchey et al., 1997) report a more positive response to mCPP than non-d ...
Guidance for Industry
Guidance for Industry

... Multiple Antigen Peptides (MAPs) intended to be used as immunogens may require additional guidance. Manufacturers should contact CBER regarding these types of products. To comply with section 505(b) of the Food, Drug, and Cosmetic Act, 21 U.S.C. § 355(b), certain information pertaining to the metho ...
PowerPoint Show Title 32pt bold For internal and external
PowerPoint Show Title 32pt bold For internal and external

... > G1 analogs demonstrated improved biological efficacy and longer duration of action compared to native GIP, but had poor physical stability > G2 analogs showed both improved efficacy and physical stability – Experimental results correlated well with their higher net charge and more negative GRAVY s ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)

... withdrawal of tail after exposure to the radiant heat from the red hot wire of the analgesiometer. The current was adjusted . A flick of tail of animal in response to radiant heat stimulus was noted before and 30 minutes after administration of drugs in different doses and the difference is taken as ...
When we enhance cognition with Adderall, do we sacrifice ORIGINAL INVESTIGATION
When we enhance cognition with Adderall, do we sacrifice ORIGINAL INVESTIGATION

... the way people think? More specifically, do they enhance certain forms of thought at the expense of creativity? The impact of cognitive enhancement on the individual and on society more generally depends on the answer to this question. The societal effects could be particularly consequential. If cog ...
Interactions between the cytochrome P450 system and
Interactions between the cytochrome P450 system and

Jumbe N, Yao B, Rovetti R, Rossi G, Heatherington A. (2002)
Jumbe N, Yao B, Rovetti R, Rossi G, Heatherington A. (2002)

... maturation and death. K. (GUV0 , day·1 ) =elimination from the central compart- curves ·are virtually superimposed, ment; GL (mUkg/day) =clearance; Vc (mUkg) =volume of distribution in central with mean hemoglobin changes from compartment; K. (day-1) = first-order absorption rate; -r (days) = lag ti ...
King Saud University 351 PHL
King Saud University 351 PHL

Pediatric Pharmacotherapy
Pediatric Pharmacotherapy

... when given with MMF, increasing free drug by 10%. Since MPAG is eliminated by renal tubular secretion, administration with acyclovir, ganciclovir, or probenecid which compete for or alter renal tubular secretion, may increase serum concentrations of both drugs. This drug interaction is likely to be ...
sued
sued

... body; the strength of the drug (e.g., 50mg, 100mg, or 200mg of active ingredient); the drug’s route of administration (e.g., oral or injected); its dosage form (e.g., tablet or capsule); and its labeling. 21 U.S.C. § 355(j)(2)(A). Generic applicants do so by submitting an Abbreviated New Drug Applic ...
The Influence of Conformational Isomerism on Drug
The Influence of Conformational Isomerism on Drug

... be conformationally restricted, it is important to address the question of why it is beneficial. Consider the following hypothetical example. Assume a drug contains two functional groups, X and Y, which are located on adjacent carbon atoms and which are essential for biological activity. Further ass ...
March - Vancouver Acute Pharmaceutical Sciences
March - Vancouver Acute Pharmaceutical Sciences

... treatment, and 95 had greater than or equal to 12 months of follow-up.2 All formulations of NRT were found to be effective in promoting smoking cessation with increased odds of quitting smoking of ~1.6-2 times compared to placebo/no treatment regardless of setting (Table 4). The nicotine inhaler had ...
Clinical Implications of Dihydropyrimidine
Clinical Implications of Dihydropyrimidine

... variation of drug levels) and interpatient variability (in pharmacokinetics, bioavailability, toxicity, and antitumor effectiveness) of 5-FU’s clinical pharmacology. DPD has been shown to follow a circadian pattern in both animals and humans.[4-6] This is thought to explain the variable plasma level ...
Part II: Contact Dermatitis & Drug Eruptions
Part II: Contact Dermatitis & Drug Eruptions

... hyperpigmentation in sunexposed areas after long periods of ingestion Frequently, corneal and lens opacities are present Therefore all pts with hyperpigmentation from these meds should have ophthalmologic exam Pigmentation from phenothiazines fades gradually over yrs Corneal, but not lenticular chan ...
Antinociceptive, anti-inflammatory and central nervous system
Antinociceptive, anti-inflammatory and central nervous system

... Inflammation, associated with pain, is very important for proper functioning of the innate immune system. It protects from antigens and initiates immune responses [5]. Anxiety is responsible for obstacle of everyday life as it is involved with fear, worry as well as restlessness of a person. It, ass ...
Opioid Drugs in Patients With Liver Disease: A Systematic Review
Opioid Drugs in Patients With Liver Disease: A Systematic Review

... Context: The liver, one of the most important organs of the body, is known to be responsible for several functions. The functional contribution of the liver to the metabolism of carbohydrates, protein, drugs and toxins, fats and cholesterol and many other biological processes are still unknown. Live ...
Paclitaxel-coated Angioplasty Catheters for Local Drug Delivery
Paclitaxel-coated Angioplasty Catheters for Local Drug Delivery

... preferential tissue binding. Two recently published papers documented effective convection and diffusion mechanisms of paclitaxel into the arterial wall from the lumen.2,3 In addition, competitive binding – for ...
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Pharmacokinetics



Pharmacokinetics, sometimes abbreviated as PK (from Ancient Greek pharmakon ""drug"" and kinetikos ""moving, putting in motion""; see chemical kinetics), is a branch of pharmacology dedicated to determining the fate of substances administered externally to a living organism. The substances of interest include pharmaceutical agents, hormones, nutrients, and toxins. It attempts to discover the fate of a drug from the moment that it is administered up to the point at which it is completely eliminated from the body.Pharmacokinetics describes how the body affects a specific drug after administration through the mechanisms of absorption and distribution, as well as the chemical changes of the substance in the body (e.g. by metabolic enzymes such as cytochrome P450 or glucuronosyltransferase enzymes), and the effects and routes of excretion of the metabolites of the drug. Pharmacokinetic properties of drugs may be affected by elements such as the site of administration and the dose of administered drug. These may affect the absorption rate. Pharmacokinetics is often studied in conjunction with pharmacodynamics, the study of a drug's pharmacological effect on the body.A number of different models have been developed in order to simplify conceptualization of the many processes that take place in the interaction between an organism and a drug. One of these models, the multi-compartment model, gives the best approximation to reality; however, the complexity involved in using this type of model means that monocompartmental models and above all two compartmental models are the most-frequently used. The various compartments that the model is divided into are commonly referred to as the ADME scheme (also referred to as LADME if liberation is included as a separate step from absorption): Liberation - the process of release of a drug from the pharmaceutical formulation. See also IVIVC. Absorption - the process of a substance entering the blood circulation. Distribution - the dispersion or dissemination of substances throughout the fluids and tissues of the body. Metabolization (or biotransformation, or inactivation) – the recognition by the organism that a foreign substance is present and the irreversible transformation of parent compounds into daughter metabolites. Excretion - the removal of the substances from the body. In rare cases, some drugs irreversibly accumulate in body tissue.The two phases of metabolism and excretion can also be grouped together under the title elimination.The study of these distinct phases involves the use and manipulation of basic concepts in order to understand the process dynamics. For this reason in order to fully comprehend the kinetics of a drug it is necessary to have detailed knowledge of a number of factors such as: the properties of the substances that act as excipients, the characteristics of the appropriate biological membranes and the way that substances can cross them, or the characteristics of the enzyme reactions that inactivate the drug.All these concepts can be represented through mathematical formulas that have a corresponding graphical representation. The use of these models allows an understanding of the characteristics of a molecule, as well as how a particular drug will behave given information regarding some of its basic characteristics. Such as its acid dissociation constant (pKa), bioavailability and solubility, absorption capacity and distribution in the organism.The model outputs for a drug can be used in industry (for example, in calculating bioequivalence when designing generic drugs) or in the clinical application of pharmacokinetic concepts. Clinical pharmacokinetics provides many performance guidelines for effective and efficient use of drugs for human-health professionals and in veterinary medicine.
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