Disruption of androgen receptor signaling by chlorpyrifos (CPF) and its environmental degradation products: a structural insight.

Androgen-disruptors are chemicals that interfere with the biosynthesis, metabolism or function of endogenous androgens affecting normal male reproductive development and health. Several epidemiological studies have indicated a link between exposure to androgen disrupting chemicals with reduced sperm counts and increased infertility. The actions of androgens within target cells are transduced by the androgen receptors (ARs).

A computational insight into the molecular interactions of chlorpyrifos and its degradation products with the human progesterone receptor leading to endocrine disruption.

Chlorpyrifos (CPF) is a widely used pesticide effective against a large number of target pests, which is used by farmers to protect food crops. Based on earlier epidemiologic reports, which indicate that CPF might interfere with the progesterone signaling pathway and can affect conception, the present study was undertaken to evaluate the binding interaction of CPF with the human progesterone receptor (hPR). Progesterone is one of the important hormones of the reproductive system and through its receptor, PR, the progesterone signaling pathway regulates important reproductive functions including reproductive cyclicity and initiation and continuation of pregnancy.

Molecular interactions of chlorpyrifos and its environmental degradation products with human sex hormone-binding globulin: an in silico study.

In recent years, there has been a widespread interest and awareness about health issues posed by endocrine-disrupting chemicals present in the environment. These chemicals, often present in food and many consumer products, can interfere with hormone biosynthesis and metabolism and may result in deviation from normal homeostatic control. Chlorpyrifos (CPF), a major endocrine-disrupting chemical is used worldwide as an agricultural insecticide against a broad spectrum of insect pests in rice cultivation and to control termites.

Analysis of Elevated Levels of Nandrolone Decanoate Induced Cytochrome- P450 Alterations in Mice.

Background: Frequent recreational use of Anabolic Androgenic Steroids (AAS) is an instance of substance abuse which mimics the status of a natural hormone and upon prolonged exposure may lead to adverse drug reactions. These adverse drug reactions proceed in a manner so as to alter the normal metabolism of an enzyme mediated pathway such as the Cytochrome P450 (CYP) family of enzymes.

Objective: The present study was conducted to investigate the impact of overuse of Nandrolone Decanoate (ND), an AAS, upon CYP enzyme activity and a CYP gene, belonging to CYP1 family.

Effect of Administration of Nandrolone Decanoate upon Aldosterone Concentration and Serum Na+/K+ Levels in Albino Mice.

Background: This article is a study of adverse effects associated with the abuse of recreational drugs such as anabolic androgenic steroids. Nandrolone decanoate is one such drug often abused by athletes and bodybuilders seeking enhanced physical strength or appearance. The use of such steroids has increased dramatically over the years.

Controlled release of tamoxifen citrate encapsulated in cross-linked guar gum nanoparticles.

Natural polysaccharides, due to their outstanding merits, have received more and more attention in the field of drug delivery. In the present study tamoxifen citrate, TMX (a non-steroidal antiestrogenic drug) loaded guar gum nanoparticles, GG NPs, crosslinked with glutaraldehyde were prepared for treatment of breast cancer. An oil in water (o/w) emulsion polymer cross-linking method was employed for preparation of blank and drug loaded sustained release nature biodegradable nanoparticles.

Nandrolone decanoate enhances the activities of cholanthrene induced glutathione-s-transferase in liver tissue of albino mice.

A concrete study is still fragmentary to correlate the effect of Nandrolone decanoate, a anabolic steroid, on the cholanthrene induced Glutathione-s-transferases (GST) activities in liver tissues. Administration of Nandrolone and 3-Methylcholanthrene in alone and combination is found to increase the activity of hepatic GST activity significantly (p< 0.01) suggesting Nandrolone as a potent inducer of GST activity.

Effect of Mimosa pudica root extract on vaginal estrous and serum hormones for screening of antifertility activity in albino mice.

Background: Several plants are traditionally used as birth control agents by the rural people in India. Mimosa pudica is one of the folk medicinal plants commonly used as antifertility agent in some places in India. The present work was carried out to evaluate the claimed antifertility effect of the plant by carrying out pharmacological studies with the root extract of the plant.

Antifertility activity of the methanolic leaf extract of Cissampelos pareira in female albino mice.

meenakshi Cissampelos pareira Linn. is one of the folk medicinal plants commonly used as antifertility agent in some places of India. The aim of the present study was to evaluate the validity of the antifertility effect of the leaf extract.