Review Articles

9 December 2012

A REVIEW ON STUDENT t-TEST

About Authors:
Ram Chandra*, Abhimanyu, Dr. Ashutosh Aggarwal
Seth G.L. Bihani S.D. College of Technical Education,
Institute of Pharmaceutical Sciences and Drug Research,
Sri Ganganagar, Rajasthan, INDIA
*rcgedar@gmail.com

1. Introduction
Biostatistics is contraction of biology and statistics, sometimes referred to as biometry or biometrics, is the application of statistics to a wide range of topics in biology. The science of biostatistics encompasses the design of biological experiments, especially in medicine and agriculture; the collection, summarization, and analysis of data from those experiments; and the interpretation of, and inference from, the results. Hypothesis testing determines the validity of the assumption with a view to choose between two conflicting hypotheses about the value of a population parameter. Hypothesis testing helps to decide on the basis of a sample data, whether a hypothesis about the population is likely to be true or false. Statisticians have developed several tests of hypotheses (also known as the tests of significance) for the purpose of testing of hypotheses which can be classified as:- (a) Parametric tests or standard tests of hypotheses, and (b) Non-parametric tests or distribution-free test of hypotheses. Parametric tests usually assume certain properties of the parent population from which we draw samples. Assumptions like observations come from a normal population, sample size is large, assumptions about the population parameters like mean, variance, etc., must hold good before parametric tests can be used. But there are situations when the researcher cannot or does not want to make such assumptions. In such situations we use statistical methods for testing hypotheses which are called non-parametric tests because such tests do not depend on any assumption about the parameters of the parent population. Besides, most non-parametric tests assume only nominal or ordinal data, whereas parametric tests require measurement equivalent to at least an interval scale. (Bolton Sanford 2004, Jakel James et.al. 2001)
7 December 2012

A REVIEW –COLON SPECIFIC DRUG DELIVERY-APPROACHES

About Authors:
Vijaya Kumar.Voleti*¹, Vaishnavi.V², V.Gunasekharan¹, M.S.Riyazullah¹, K.Vivekanandan¹
¹Department of pharmaceutics, Rao’s College of Pharmacy, Nellore, Andhra Pradesh, India,
²Department of pharmaceutics, Sankar Reddy Institute of Pharmaceutical Sciences, Andhra Pradesh, India
*vijay66vvk@gmail.com

ABSTRACT:
Colon specific drug delivery has gained a more importance for the delivery at colonic region by use of various drugs to treat the both local and systemic diseases. Local diseases include Chron’s disease, ulcerative colitis, and colorectal cancer. Other serious disorders like nocturnal asthma, Hyper tension , arthritis and angina can also be cured by these techniques. Colonic delivery is a good candidature for delivery of proteins peptides and vaccines where the enzymatic degradation and the hydrolysis of proteins can be minimized and increases the systemic bioavailability. A drug should be protected from the absorption and the upper GI environment to achieve the successful colonic drug delivery. The colon specific delivery of drugs to the target receptor sites has the advantage to reduce the side effects and improves the therapeutic response. Colon specific drug delivery are being developed by taking advantage of the luminal PH conditions and the presence of microbial enzymes such as azoreductase, pectinase, dextranase…etc. This review mainly reveals on the various concepts and approaches include Prodrug, PH and time dependent systems and microbially triggered systems used in the development of colon specific drug delivery. This also focuses on the novel approaches namely Pressure controlled colonic delivery, osmotic controlled drug delivery and CODESTM. Invitro and in vivo evaluation parameters has been discussed here.
7 December 2012

RECENT TRENDS IN ORAL DRUG DELIVERY: MOUTH DISSOLVING TABLETS

About Authors:
Soniya^1*, Tarun Parashar¹, Satyanand Tyagi², Patel Chirag J³, Rishikesh Gupta⁴
¹*Department of Pharmaceutics, Himalayan Institute of Pharmacy and Research, Rajawala, Dehradun, Uttarakhand, India-248002.
²President, Tyagi Pharmacy Association & Scientific Writer (Pharmacy), Chattarpur, New Delhi, India-110074.
³Department of Pharmaceutics, Maharishi Arvind Institute of Pharmacy, Mansarovar, Jaipur, Rajasthan, India-302020.
⁴Institute of Pharmacy, Bundelkhand University, Jhansi, Uttar Pradesh, India-284128.
*soniyarani487@gmail.com 08006939832/09999261031

ABSTRACT:
To obviate the problems associated with conventional dosage forms, mouth dissolving tablets have been developed having good hardness, dose uniformity, easy administration, faster disintegration without water and serves as the first choice of dosage form for pediatrics, geriatrics and traveling patients. Mouth dissolving tablets (MDTs) are also known as fast melting tablets, fast disintegrating tablets, fast dissolving/dispersing tablets or melt in mouth tablets.This article gives a brief review of mechanism of action, technologies used now a day for MDTs,Some of promising drug candidates for MDT and evaluation parameters MDTs.Due to wide significance of MDT, this drug delivery system may lead to better patient compliance and ultimate clinical output.
7 December 2012

H-NMR SPECTROSCOPY: AN INTRODUCTION

About Authors:
Arshad Hala*, Prof. Rajesh Dholpuria, Nilesh sovasia
Seth G. L. Bihani S. D. College Of Technical Education,
Institute Of Pharmaceutical Sciences & Drug Research,
Gaganpath, Sri Ganganagar, Rajasthan 335001
*Arshad_hala@yahoo.com

ABSTRACT:
Over the past fifty years nuclear magnetic resonance spectroscopy, commonly referred to as NMR, has become the preeminent technique for determining the structure of organic compounds. Nuclear Magnetic Resonance (NMR) spectroscopy is an analytical chemistry technique used in quality control and research for determining the content and purity of a sample as well as its molecular structure. For example, NMR can quantitatively analyze mixtures containing known compounds. For unknown compounds, NMR can either be used to match against spectral libraries or to infer the basic structure directly. Once the basic structure is known, NMR can be used to determine molecular conformation in solution as well as studying physical properties at the molecular level such as conformational exchange, phase changes, solubility, and diffusion.Of all the spectroscopic methods, it is the only one for which a complete analysis and interpretation of the entire spectrum is normally expected. Although larger amounts of sample are needed than for mass spectroscopy, NMR is non-destructive, and with modern instruments good data may be obtained from samples weighing less than a milligram. To be successful in using NMR as an analytical tool, it is necessary to understand the physical principles on which the methods are based.
6 December 2012

CLINICAL INDICATIONS OF HEAT SHOCK PROTEINS (HSP): A PHARMACOLOGICAL REVIEW

About Authors:
Tarun Parashar^1*, Soniya¹, Satyanand Tyagi², Patel Chirag J³, Rishikesh Gupta⁴, Ram Narayan Prajapati⁴
¹*Department of Pharmaceutics, Himalayan Institute of Pharmacy and Research, Rajawala, Dehradun, Uttarakhand, India-248002.
²President, Tyagi Pharmacy Association & Scientific Writer (Pharmacy), Chattarpur, New Delhi, India-110074.
³Department of Pharmaceutics, Maharishi Arvind Institute of Pharmacy, Mansarovar, Jaipur, Rajasthan, India-302020.
⁴Institute of Pharmacy, Bundelkhand University, Jhansi, Uttar Pradesh, India-284128.
*parashar89tarun@gmail.com, +91-7838447014/08006939831

ABSTRACT:
Heat shock proteins (HSP) are a group of proteins the expression of which is increased when the cells are exposed to elevated temperatures. HSP are present in cells under normal conditions, but are expressed at high levels when exposed to sudden temperature jump or other stress. HSP stabilize proteins and are involved in the folding of denatured proteins. High temperatures and other stresses, such as altered pH and oxygen deprivation, make it more difficult for proteins to form their proper structures and cause some already structures protein to unfold. Left uncorrected, mis-folded proteins form aggregates that may eventually kill the cell. HSB are induced rapidly at highly levels to deal with this problem. HSP have wide clinical applications, they are not only useful as Cancervaccine adjuvant as well as anticancer therapeutics, and also they are useful in agricultural field. The aim of present article is to provide in depth knowledge about clinical indications of these proteins so called as “Heat Shock Proteins”.
An attempt is also made to focus on functions, characteristics, types, qualities, clinical significance as well as brief description of Heatshock proteins.
6 December 2012

NATURALLY OCCURRING MYCOTOXINS – AFLATOXIN

About Authors:
Sahu Deepak*
Ass. Professor, Geetanjali Institute of Pharmacy,
Dabok, Udaipur [Rajasthan] – 313022
deepak.sahu.bhl@gmail.com
{ DOWNLOAD AS PDF }

Abstract:
A toxin produced by mold that can damage the liver and may lead to liver cancer. Aflatoxins cause cancer in some animals. The fungi that produce aflatoxin grow on crops such as peanuts (especially) and wheat, corn, beans and rice. Aflatoxin is a problem particularly in undeveloped and developing countries.
Aflatoxin is a naturally occurring mycotoxin produced by two types of mold: Aspergillus flavus and Aspergillus parasiticus. Aspergillus flavus is common and widespread in nature and is most often found when certain grains are grown under stressful conditions such as drought. The mold occurs in soil, decaying vegetation, hay, and grains undergoing microbiological deterioration and invades all types of organic substrates whenever and wherever the conditions are favorable for its growth. Favorable conditions include high moisture content and high temperature. At least 13 different types of aflatoxin are produced in nature with aflatoxin B1 considered as the most toxic. While the presence of Aspergillus flavus does not always indicate harmful levels of aflatoxin it does mean that the potential for aflatoxin production is present.^1,2,3
5 December 2012

A REVIEW ON ANTIMALARIAL AGENTS

About Authors:
Gunjan Kalyani*¹, Vishal S. Deshmukh¹, Yogesh Vaishnav¹
¹Shri Rawatpura Sarkar Institute of Pharmacy,
Kumhari-490 042, Chhattisgarh
kalyani.gunjan@yahoo.in, rvg_54767@yahoo.co.in*

ABSTRACT
Malaria caused mostly by P. falciparum and P. vivax, remains one of the most important infectious diseases in the world. The numbers of antimalarial drugs in use are very small. Drug toxicity must be acceptable to patients and should cause less harm than the disease itself. Assessment of hazard and risk varies throughout drug development as more persons are exposed for longer periods of time and more nonclinical information on the hazard is collected and evaluated. Cancer risk for human pharmaceuticals is important because drugs are taken at pharmacologically active doses and often on a chronic basis. Epidemiologic studies on patient populations have limited value because of the long latency period for most cancers and because these studies lack sensitivity. Besides the mutagenicity and genotoxicity testing of antimalarial drugs as a part of pre-clinical trials, there are several literatures confirming the mutagenicity and genotoxicity of marketed antimalarial drugs. Genetic abnormalities may also play a part in the incidence and severity of adverse reactions to drugs. In this paper, a comprehensive review of literature pertaining to the mutagenic and genotoxic properties of some commonly used antimalarial drugs is presented.
4 December 2012

ROLE OF CASHEW NUTS AND OTHER NUTS IN THE MANAGEMENT OF DIABETES: A CLINICAL REVIEW

About Authors:
Satyanand Tyagi*, Patel Chirag J¹, Tarun Parashar², Soniya², Rishikesh Gupta³, Devesh Kaushik⁴
*President, Tyagi Pharmacy Association & Scientific Writer (Pharmacy),
Chattarpur, New Delhi, India-110074.
Prof. Satyanand Tyagi is a life time member of various pharmacy professional bodies like IPA, APTI and IPGA. He has published various research papers, review articles and short communications. He is member of Editorial Advisory Board for some reputed Pharmacy Journals. He is appointed as an Author for International Pharmaceutical Writers Association (IPWA). (Appointed as an author for the chapters of book on Pharmaceutical Chemistry). His academic work includes 62 Publications (52 Review Articles, 08 Research Articles and 02 short Communications of Pharmaceutical, Medicinal and Clinical Importance, published in standard and reputed National and International Pharmacy journals; Out of 62 publications, 11 are International Publications). His research topics of interest are neurodegenerative disorders, diabetes mellitus, cancer, rare genetic disorders, psycho-pharmacological agents as well as epilepsy.
¹Department of Pharmaceutics, Maharishi Arvind Institute of Pharmacy, Mansarovar, Jaipur, Rajasthan, India-302020.
²Department of Pharmaceutics, Himalayan Institute of Pharmacy and Research, Rajawala, Dehradun, Uttarakhand, India-302020.
³Institute of Pharmacy, Bundelkhand University, Jhansi, Uttar Pradesh, India-284128.
⁴Territory Business Manager, Diabetes Division, Abbott Healthcare Private Limited, Okhla, New Delhi, India- 110020.
*sntyagi9 @yahoo.com, +91-9871111375/9582025220

ABSTRACT:
Diabetes is usually a lifelong (chronic) disease in which there are high levels of sugar in the blood. Diabetes, often referred to by doctors as diabetes mellitus, describes a group of metabolic diseases in which the person has high blood glucose (blood sugar), either because insulin production is inadequate, or because the body's cells do not respond properly to insulin, or both. Patients with high blood sugar will typically experience polyuria (frequent urination), they will become increasingly thirsty (polydipsia) and hungry (polyphagia). Cashew nuts have a relatively high fat content, but it's what dieticians consider “good fat.” It's good fat because it has the ideal fat ratio of 1:2:1 for saturated, monosaturated, and polyunsaturated fat.
4 December 2012

RECENT ADVANCES IN FLOATING MICROSPHERES AS NOVEL APPROACHES: A REVIEW

About Authors:
Manish Jaimini^*, Vishal Joshi
Dept. Of Pharmaceutics, Jaipur college of Pharmacy,
Sitapura, Jaipur (Raj.) 302022
*manishjaimini@gmail.com

ABSTRACT
Novel drug delivery system as a major advance to solving the problems related to the release of the drug at specific site. These systems have several advantages over conventional multi dose therapy. There are various approaches in delivering a therapeutic substance to the target site in a sustained release fashion. One such approach is using microspheres as carriers for drugs. Microencapsulation is used to modify and delay drug release from pharmaceutical dosage forms. Microspheres efficiently utilized in controlled delivery of many drugs but wastage of drug due to low drug entrapment efficiency is the major drawback of such micro-particulate system. This review provides brief information about floating microspheres, method of preparations, evaluation and application of microspheres for sustained drug delivery.
4 December 2012

HEALTH BENEFITS AND DRAW BACKS OF GENETICALLY ENGINEERED/ GENETICALLY MODIFIED (GM) TOMATOES: AN OVERVIEW

About Authors:
Satyanand Tyagi^1*, Patel Chirag J¹, Patel Jaimin¹, Chaudhari Bharat¹, Ram Narayan Prajapati³
¹*President, Tyagi Pharmacy Association & Scientific Writer (Pharmacy),
Chattarpur, New Delhi, India-110074.
Prof. Satyanand Tyagi is a life time member of various pharmacy professional bodies like IPA, APTI and IPGA. He has published various research papers, review articles and short communications. He is member of Editorial Advisory Board for some reputed Pharmacy Journals. He is recently appointed as an Author for International Pharmaceutical Writers Association (IPWA). (Appointed as an author for the chapters of book on Pharmaceutical Chemistry). His academic work includes 62 Publications (52 Review Articles, 08 Research Articles and 02 short Communications of Pharmaceutical, Medicinal and Clinical Importance, published in standard and reputed National and International Pharmacy journals; Out of 62 publications, 11 are International Publications). His research topics of interest are neurodegenerative disorders, diabetes mellitus, cancer, rare genetic disorders, psycho-pharmacological agents as well as epilepsy.
²Department of Pharmaceutics, Maharishi Arvind Institute of Pharmacy, Mansarovar, Jaipur, Rajasthan, India-302020.
³Institute of Pharmacy, Bundelkhand University, Jhansi, Uttar Pradesh, India-284128.
*sntyagi9@yahoo.com, +91-9871111375/09582025220

ABSTRACT:
A Genetically Modified (GM) tomato, or transgenic tomato or genetically engineered is a tomato that has had its genes modified, using genetic engineering. The first commercially available genetically modified food was a tomato engineered to have a longer shelf life. Currently there are no genetically modified tomatoes available commercially, but scientists are developing tomatoes with new traits like increased resistance to pests or environmental stresses. Other projects aim to enrich tomatoes with substances that may offer health benefits or be more nutritious.