Which are the Methods for Measurement of bioavailability?- Pharmacokinetic method- Plasma level time studies, Urinary excretion studies.
Pharmacodynamic method: Acute pharmacologic response, Therapeutic response.
KINETICS OF MULTIPLE DOSING under the Unit Multicompartment Models According to New PCI syllabus 2017 by Ms. Preeti Patil-Vibhute, Assistant Professor, Sarojini College of Pharmacy, Kolhapur.
KINETICS OF MULTIPLE DOSING under the Unit Multicompartment Models According to New PCI syllabus 2017 by Ms. Preeti Patil-Vibhute, Assistant Professor, Sarojini College of Pharmacy, Kolhapur.
Introduction
Mechanisms of protein drug binding
Kinetics of protein drug binding
Classes of protein drug binding.
1. Binding of drug to blood components.
(a) Plasma proteins
(b) Blood cells
2. Binding of drug to extravascular tissue protein
Determination of Protein-drug Binding
Factors affecting protein drug binding
Significance of protein/tissue binding of drug
Definition of drug interaction, potential of herb-drug interactions,significance of study of herb-drug interactions, reasons for their study, types according to ayurveda, effects & different ways of herb-drug interactions, their mechanism, hypericum, kava lava, ginkgo biloba, ginseng, garlic, pepper, ephedra.
Biopharmaceutics: Mechanisms of Drug AbsorptionSURYAKANTVERMA2
Biopharmaceutics is defined as the study of factors influencing the rate and amount of drug that reaches the systemic circulation and the use of this information to optimise the therapeutic efficacy of the drug products.
Introduction
Mechanisms of protein drug binding
Kinetics of protein drug binding
Classes of protein drug binding.
1. Binding of drug to blood components.
(a) Plasma proteins
(b) Blood cells
2. Binding of drug to extravascular tissue protein
Determination of Protein-drug Binding
Factors affecting protein drug binding
Significance of protein/tissue binding of drug
Definition of drug interaction, potential of herb-drug interactions,significance of study of herb-drug interactions, reasons for their study, types according to ayurveda, effects & different ways of herb-drug interactions, their mechanism, hypericum, kava lava, ginkgo biloba, ginseng, garlic, pepper, ephedra.
Biopharmaceutics: Mechanisms of Drug AbsorptionSURYAKANTVERMA2
Biopharmaceutics is defined as the study of factors influencing the rate and amount of drug that reaches the systemic circulation and the use of this information to optimise the therapeutic efficacy of the drug products.
Bioavailability & Bioequivalence Studies
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Sub :- Research Methodology
M.Phrmacy Semister 1
Savitribai Phule Pune University
Bioavailability:
Bioavailability is defined as a measure, of the rate and amount of drug, which reaches the systemic circulation unchanged following the administration of a dosage form.
Absolute bioavailability:
When systemic availability of a drug administered orally
is determined in comparison to its I.V. administration, denoted by F.
Relative bioavailability:
When systemic availability of a drug after oral administration is
Compared with that of oral standard of the same drug
( Solution or suspension ) and denoted by Fr.
It refers to the drug substance in two or more identical dosage forms , reaches systemic circulation at he same rate and to the same relative extent .
Their plasma concentration –time profile will be identical without significant statistical differences.
It refers to the drug substance in two or more identical dosage forms , reaches systemic circulation at he same rate and to the same relative extent .
Their plasma concentration –time profile will be identical without significant statistical differences.
Measurement of bioavailability and concept of equivalenceRavish Yadav
The all the content in this profile is completed by the teachers, students as well as other health care peoples.
thank you, all the respected peoples, for giving the information to complete this presentation.
this information is free to use by anyone.
Bioequivalence studies for various pharmaceutical drug formulations manufactured and released into the market is outlined in this presentation. The various studies used to establish bioequivalency with the original formulation is also mentioned.
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Rheumatoid arthritis- diagnosis and treatment pharmacampus
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ACE inhibitors block the angiotensin-converting enzyme found throughout vascular tissue that converts angiotensin I to angiotensin II. Let us know how do ACE Inhibitors work?
Bioavailability studies are designed to determine either an absolute BA or relative BA.
They can be used to compare different routes of administration.
Which are the Factors affecting bioavailability?pharmacampus
Factors affecting bioavailability: The dosage form factors, food effects, cellular structure, pH environment, GI transit time, physiology-related factors, etc.
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Biostatistics broadly deals with statistical applications in the context of biological problems, including medicine, pharmacy, and public health. Government organizations, research institutes and industry have been extensively using statistics and biostatistics
Bio-equivalence study of drugs: Let us know the Biopharmaceutical Classification System, why do we require a Bioequivalence study, and regulatory requirements.
Introduction to Bio-availability study pharmacampus
Bioavailability studies are done in clinical, academic, and regulatory interest. Objectives could be developing a new drug entity, Determination of the influence of Excipients, Patient-related factors.
Introduction to indian pharma industriespharmacampus
Introduction to Indian Pharma Industries: this highlights leading pharma producers, details of exports of medicines, growth statistics, and high potential generic market.
Growth drivers in Indian Pharma Industry pharmacampus
Indian pharma industry growth is driven by Supply Side Drivers, demand-side drivers, and government policy support.
References:
https://www.ibef.org/industry/pharmaceutical-india.aspx
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
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New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
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Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
3. Pharmacokinetic method
1. Plasma Level Time Studies :
Principle:
• The method is based on the assumption that two
dosage forms that exhibit super imposable
plasma level time profiles in a group of subjects
should result in identical therapeutic activity
(and they would be termed as bioequivalent).
• These studies cab be single dose or multiple
dose studies.
4. Pharmacokinetic method
1. Plasma Level
Time Studies :
Single Dose Study
Following steps
are involved in a
single dose study.
Collection of serial blood samples for
period of 2-3 biological half lives after
drug administration.
Analysis for drug concentration.
Obtain plasma level time profile by this
plot.
Making a plot of plasma concentration
versus time of sample collection.
5. Pharmacokinetic method
1. Plasma Level Time Studies :
FDA Guidelines on Collection of Blood Samples:
1. When comparison of the test product and the
reference material is to be based on blood
concentration time curves.
2. In a study comparing oral dosage forms, the
sampling times should be identical.
3. In a study comparing an intravenous dosage form
and an oral dosage form,
4. In a study comparing drug delivery systems other
than oral or intravenous dosage forms with an
appropriate reference standard.
6. Pharmacokinetic method
Type of Study Advantages Disadvantages
Single Dose
Study
• Easy to conduct.
• Offer less
exposure
to drug.
• Less tedious.
• Dose does not give
any
idea of
drug/metabolites.
• Difficult to predict
the
steady state
characteristics
of the drugs.
MultipleDose
Study
• Easy to predict
the peak
and valley
characteristics
of drug
• Fewer blood
samples
requirements
• Less sensitive
analytical
method
• Difficult to control
• Highly tedious
• Time consuming
1. Plasma Level Time Studies :
Single dose verses multiple dose study
7. Pharmacokinetic method
1. Plasma Level Time Studies :
Basic Pharmacokinetic Parameters of Plasma level
time Studies
• Pharmacokinetics provides a mathematical
basis to assess the time course of drugs and
their effects in the body.
• It enables the following processes to be
quantified:
Absorption, Distribution, Metabolism, and
Excretion.
• The effectiveness of a dosage regimen is
determined by the concentration of the drug in
the body. A plasma level time profile curve of a orally
administereddrug.
8. 1. Plasma Level Time Studies :
FDA Guidelines on the design of a multiple-
dose in vivo bioavailability study
(a) Basic Principles :
1. In selected circumstances it may be necessary
for the test product and the reference material to
be compared after repeated administration.
2. The test product and the reference material
should be administered to subjects in the fasting
or non fasting state.
3. The drug product is an extended release
dosage form.
Pharmacokinetic method
9. Pharmacokinetic method
1. Plasma Level Time Studies :
(b) Study Design :
1. A multiple-dose study should be crossover in design, unless a parallel design or
other design is more appropriate for valid scientific reasons.
2. The,drug elimination period should be either:
At least five times the half-life
of the active drug
ingredient or therapeutic
moiety, or its active
metabolite(s), measured in
the blood or urine; or
At least five times the
half-life of decay of the
acute pharmacological
effect.
10. Pharmacokinetic method
1. Plasma Level Time Studies :
(c) Achievement of steady-state conditions :
• Whenever a multiple-dose study is conducted,
unless some other approach is more appropriate
for valid scientific reasons.
• Sufficient doses of the test product and reference
material should be administered in accordance
with the labeling to achieve steady state
conditions.
11. Pharmacokinetic method
1. Plasma Level Time Studies :
(d) Collection of blood or urine samples
• Whenever comparison of the test product and
the reference material is to be based on blood
concentration time curves at steady state.
• Whenever comparison of the test product and
the reference material is to be based on
cumulative urinary excretion-time curves at
steady state.
12. Pharmacokinetic method
1. Plasma Level Time Studies :
(e) Steady-state parameters :
• In certain instances, e.g., in a study involving a
new drug entity, blood clearances at steady-
state obtained in a multiple dose study should
be compared to blood clearances.
• In a linear system, the area under the blood
concentration- time curve during a dosing
interval in a multiple dose steady- state study
is directly proportional to the fraction of the
dose absorbed.
13. Pharmacokinetic method
2. Urinary Excretion Studies :
Principle:
• The urinary excretion of unchanged drug is directly
proportional to the plasma concentration of drug.
• The study is particularly useful for drugs extensively
excreted unchanged in the urine.
• Example: thiazides, sulphonamides, urinary
antiseptics, hexamine etc.
14. Pharmacokinetic method
2. Urinary Excretion Studies :
Method :
• Collection of urine at regular interval for a time
span equal to 7 biological half lives.
• Analysis of unchanged drug in the collected sample.
• Determination of the amount of drug excreted in
each interval.
Note: At each sample collection total emptying of
bladder is necessary to avoid errors resulting from
addition of residual amount to the next urine.
15. Pharmacodynamic method
1. Acute Pharmacologic Response
It may include measurement of one or more of the
following pharmacological reponses:
• Change in ECG or EEG reading.
• Pupil diameter etc are related to time course of a
given drug.
Disadvantages
• Variable pharmacologic response.
• Accurate correlation between measured response and
drug available is difficult.
16. Pharmacodynamic method
2. Therapeutic Response
Principle:
• Observing the clinical response to a drug
formulation given to patient suffering from
disease for which it is intended to be used.
• But the method is associated with the fact that
the response observed is often too improper.
• Pharmacodynamic studies are not
recommended for orally administered drug
products