Computational modelling of drug disposition lalitajoshi9
computational modelling of drug disposition is the integral part of computer aided drug design. different kinds of tools being used in the prediction of drug disposition in human body. This topic in the CADD explains the details about the drug disposition, active transporters and tools.
Myself Omkar Tipugade , M- Pharm ,Sem - II, Department of pharmaceutics , from Shree Santkrupa College Of Pharmacy , ghogaon . Today I upload presentation on Active Transport like P-gp , BCPR, Nucleoside transporters etc .
Computational modelling of drug disposition lalitajoshi9
computational modelling of drug disposition is the integral part of computer aided drug design. different kinds of tools being used in the prediction of drug disposition in human body. This topic in the CADD explains the details about the drug disposition, active transporters and tools.
Myself Omkar Tipugade , M- Pharm ,Sem - II, Department of pharmaceutics , from Shree Santkrupa College Of Pharmacy , ghogaon . Today I upload presentation on Active Transport like P-gp , BCPR, Nucleoside transporters etc .
REGULATORY AND INDUSTRY VIEWS ON QbD, SCIENTIFICALLY BASED QbD- EXAMPLES OF A...Ardra Krishna
The pharmaceutical Quantity by Design (QbD) is a systemic approach to development that begins with predefined objectives and emphasizes product and process understanding and process control, based on sound science and quantity risk management.
QbD has been adopted by U.S Food and Drug Administration (FDA) for the discovery, development and manufacture of drugs.
Quality- by- design (QbD) is a concept introduces by the International Conference on Harmonization (ICH) Q8 guidelines.
Statistical modeling in pharmaceutical research and developmentPV. Viji
Statistical modeling in pharmaceutical research and development , Statistical Modeling , Descriptive Versus Mechanistic Modeling , Statistical Parameters Estimation , Confidence Regions , Non Linearity at the Optimum , Sensitivity Analysis , Optimal Design , Population Modeling
1. Structure of skin.
2. Skin relating problems :
a. Dry skin
b. Acne
c. Pigmentation
d. Prickly heat
e. Wrinkles
f. Body odour
3. Structure of hair.
4. Hair growth cycle.
Computational modeling of drug dispositionPV. Viji
Computational modeling of drug disposition , Modeling techniques , Drug absorption , solubility , intestinal permeation , Drug distribution , Drug excretion , Active Transport , P-gp , BCRP , Nucleoside transporters , hPEPT1 , ASBT , OCT , OATP , BBB-choline transporter
REGULATORY AND INDUSTRY VIEWS ON QbD, SCIENTIFICALLY BASED QbD- EXAMPLES OF A...Ardra Krishna
The pharmaceutical Quantity by Design (QbD) is a systemic approach to development that begins with predefined objectives and emphasizes product and process understanding and process control, based on sound science and quantity risk management.
QbD has been adopted by U.S Food and Drug Administration (FDA) for the discovery, development and manufacture of drugs.
Quality- by- design (QbD) is a concept introduces by the International Conference on Harmonization (ICH) Q8 guidelines.
Statistical modeling in pharmaceutical research and developmentPV. Viji
Statistical modeling in pharmaceutical research and development , Statistical Modeling , Descriptive Versus Mechanistic Modeling , Statistical Parameters Estimation , Confidence Regions , Non Linearity at the Optimum , Sensitivity Analysis , Optimal Design , Population Modeling
1. Structure of skin.
2. Skin relating problems :
a. Dry skin
b. Acne
c. Pigmentation
d. Prickly heat
e. Wrinkles
f. Body odour
3. Structure of hair.
4. Hair growth cycle.
Computational modeling of drug dispositionPV. Viji
Computational modeling of drug disposition , Modeling techniques , Drug absorption , solubility , intestinal permeation , Drug distribution , Drug excretion , Active Transport , P-gp , BCRP , Nucleoside transporters , hPEPT1 , ASBT , OCT , OATP , BBB-choline transporter
In this presentation I have mentioned whatever the possible relevant content required for the title.
Citation Is done at the end of slide.
Content is up to date & true to my belief.
Thanks & Best Regards.
Anurag Pandey
B.Pharm (FACULTY OF PHARMACY, INVERTIS UNIVERSITY)
M.Pharm (INSTITUTE OF PHARMACY, NIRMA UNIVERSITY)
Email :- anurag.dmk05@gmail.com
Evolution of Computers in Pharmaceutical Research and Development: A Historic...TariqHusain19
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Cheminformatics (sometimes referred to as chemical informatics or chemoinformatics) focuses on storing, indexing, searching, retrieving, and applying information about chemical compounds. ... Virtual libraries can contain information on likely synthesis methods and predicted stability of the reaction products.
Mobile hardware and software technology continues to evolve very rapidly and presents drug discovery scientists with new platforms for accessing data and performing data analysis. Smartphones and tablet computers can now be used to perform many of the operations previously addressed by laptops or desktop computers. Although the smaller screen sizes and requirements for touch screen manipulation can present user interface design challenges, especially with chemistry related applications, these limitations are driving innovative solutions. In this early review of the topic, we collectively present our diverse experiences as software developer, chemistry database expert and naïve user, in terms of what mobile platforms may provide to the drug discovery chemist in the way of apps in the future as this disruptive technology takes off.
Utilisation of computers and computational tools in pharmaceutical industry started in early 1940. Applications of computer drug delivery systems and Pharmacoinformatics. It is used in digital laboratories and hospital pharmacy and retail pharmacy etc.
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2. HISTORY OF COMPUTERS IN PHARMACEUTICAL
RESEARCH AND DEVELOPMENT -INTRODUCTION
Today, computers are so ubiquitous in pharmaceutical research
and development that it may be hard to imagine a time when
there were no computers to assist the medicinal chemist or
biologist.
Computers began to be utilized at pharmaceutical companies as
early as the 1940s.
There were several scientific and engineering advances that
made possible a computational approach to design and develop
a molecule
2
3. One fundamental concept understood by chemists was that
chemical structure is related to molecular properties including
biological activity.
Hence if one could predict properties by calculations, one might be
able to predict which structures should be investigated in the
laboratory.
Another fundamental, well-established concept was that a drug
would exert its biological activity by binding to and/or inhibiting some
biomolecule in the body. ( This concept stems from Fischer’s
famous lock-and-key hypothesis )
Pioneering research in the 1950s attacked the problem of linking
electronic structure and biological activity.
A good part of this work was collected in the 1963 book by Bernard
and Alberte Pullman of Paris, France, which fired the imagination of
what might be possible with calculations on biomolecules .
3
4. The earliest papers that attempted to mathematically relate
chemical structure and biological activity were published in
Scotland in the middle of the nineteenth century .
This work and a couple of other papers were
forerunners(pecursor) to modern quantitative structureactivity
relationships (QSAR).
The early computers were designed for military and
accounting applications, but gradually it became apparent that
computers would have a vast number of uses.
4
5. COMPUTATIONAL CHEMISTRY:
THE BEGINNINGS AT LILLY
In the late 1950s or early 1960s, the first computers to have stored
programs of scientific interest were acquired.
One of these was an IBM 650; it had a rotating magnetic drum memory
consisting of 2000 accessible registers.
The programs, the data input, and the output were all in the form of IBM
punched cards.
It was carried out by Lilly’s research statistics group under Dr. Edgar King.
It was not until 1968, when Don Boyd joined the second theoretical
chemist in the group, that the computers at Lilly started to reach a level of
size, speed, and sophistication to be able to handle some of the
computational requirements of various evaluation and design efforts.
Don brought with him Hoffmann’s EHT program from Harvard and Cornell.
5
6. GERMINATION: THE 1960s
in 1960 essentially 100% of the computational chemists were in
academia, not industry.
The students coming from those academic laboratories
constituted the main pool of candidates that industry could hire
for their initial ventures into using computers for drug discovery.
Another pool of chemists educated using computers were X-ray
crystallographers.
One of the largest computers then in use by theoretical chemists
and crystallographers was the IBM 7094.
Support staff operated the tape readers, card readers, and
printers.
6
7. Programs were written in FORTRAN II.
Programs used by the chemists usually ranged from half a box
to several boxes long.
Carrying several boxes of cards to the computer center was
good for physical fitness.
If a box was dropped or if a card reader mangled some of the
cards, the tedious task of restoring the deck and replacing the
torn cards ensued.
Finally in regard to software, we note one program that came
from the realm of crystallography.
That program was ORTEP (Oak Ridge Thermal Ellipsoid
Program), which was the first widely used program for
(noninteractive) molecular graphics .
7
8. GAINING A FOOTHOLD: THE 1970s
Lilly management of the 1970s standed by further permanent
growth.
It was not until near the end of the 1980s that Lilly resumed
growing its computational chemistry group to catch up to the other
large pharmaceutical companies.
Other companies such as Merck and Smith Kline and French
(using the old name) entered the field a few years later.
Unlike Lilly, they hired chemists trained in organic chemistry and
computers.
Widely used models included members of the IBM 360 and 370
series.
Placing these more powerful machines in-house made it easier and
more secure to submit jobs and retrieve output. But output was still
in the form of long printouts.
8
9. Computational chemists in the pharmaceutical industry also
expanded from their academic upbringing by acquiring an interest in
force field methods, QSAR, and statistics.
To solve research problems in industry, one had to use the best
available technique, and this did not mean going to a larger basis set
or a higher level of quantum mechanical theory. It meant using
molecular mechanics or QSAR.
The 1970s were full of small successes such as finding correlations
between calculated and experimental properties.
Some of these correlations were published. Even something so
grand as the de novo design of a pharmaceutical was attempted but
was somewhat beyond reach.
Two new computer-based resources were launched in the 1970s.
One was the Cambridge Structural Database (CSD)
9
10. GROWTH: THE 1980s
If the 1960s were the Dark Ages and the 1970s were the
Middle Ages, the 1980s were the Renaissance, the Baroque
Period, and the Enlightenment all rolled into one.
The decade of the 1980s was when the various approaches
of quantum chemistry, molecular mechanics, molecular
simulations, QSAR, and molecular graphics coalesced into
modern computational chemistry.
Several exciting technical advances fostered the improved
environment for computer use at pharmaceutical companies in
the 1980s. The first was a development of the VAX 11/780
computer by Digital Equipment Corporation (DEC) in 1979.
10
11. FRUITION: THE 1990s
The 1990s was a decade of fruition because the computer-
based drug discovery work of the 1980s yielded an
impressive number of new chemical entities reaching the
pharmaceutical marketplace.
Pharmaceutical companies were accustomed to supporting
their own research and making large investments in it.
supercomputers that were creating excitement at a small
number of pharmaceutical companies, another hardware
development was attracting attention at just about every
company interested in designing drugs.
Workstations from Silicon Graphics Inc. (SGI) were
becoming increasingly popular for molecular research
11
12. During tha time the Apple Macintoshes were well liked by
scientists. However, in 1994 Apple lost its lawsuit against
Microsoft regarding the similarities of the Windows graphical
user interface (GUI) to Apple’s desktop design.
QSAR proved to be one of the best approaches to providing
assistance to the medicinal chemist in the 1990s.
Therefore, computational chemistry experts play an important
role in maximizing the potential benefits of computer based
technologies.
12
13. STATISTICAL MODELING IN
PHARMACEUTICAL RESEARCH AND
DEVELOPMENT
The new major challenge that the pharmaceutical industry is
facing in the discovery and development of new drugs is to
reduce costs and time needed from discovery to market, while at
the same time raising standards of quality.
In parallel to this growing challenge, technologies are also
dramatically evolving, opening doors to opportunities never seen
before.
Some of the best examples of new technologies available in the
life sciences are microarray technologies or high-throughput-
screening.
13
14. The new technologies have been integrated to do the
same things as before, but faster, deeper, smaller, with
more automation, with more precision, and by
collecting more data per experimental unit.
However, the standard way to plan experiments, to
handle new results, to make decisions has remained
more or less unchanged, except that the volume of
data, and the disk space required to store it, has
exploded exponentially.
This standard way to discover new drugs is essentially
by trial and error.
14
15. the process of discovery and development of new drugs has
been drawn to highlight the pivotal role that models (simplifi ed
mathematical descriptions of real-life mechanisms) play in
many R&D activities.
In some areas of pharmaceutical research, like
pharmacokinetics/pharmacodynamics (PK/PD), models are
built to characterize the kinetics and action of new compounds
or platforms of compounds, knowledge crucial for designing
new experiments and optimizing drug dosage.
Models are also developed in other areas, as for example in
medicinal chemistry with QSAR-related models. These can all
be defined as mechanistic models, and they are useful.
15
16. On the other side, many models of a different type are currently
used in the biological sciences:
Using empirical models, universally applicable, whose basic
purpose is to appropriately represent the noise, but not the
biology or the chemistry, statisticians give whenever possible a
denoised picture of the results, so that field scientists can gain
better understanding and take more informed decisions.
The dividing line between empirical models and mechanistic
models is not as clear and obvious as some would pretend.
Mechanistic models are usually based on chemical or biological
knowledge, or the understanding we have of chemistry or biology.
16
17. Today, however, the combination of mathematics, statistics, and
computing allows us to effectively use more and more complex
mechanistic models directly incorporating our biological or
chemical knowledge.
17