Mannheim, Germany (PRWEB) September 25, 2012
ScienceIndex.com is a Physiology and Zoology Sciences Social Network established in 1998 to index the very latest news, headlines, references and resources from science journals, books and websites worldwide. The site covers news in all fields of biology, business, chemistry, engineering, geography, health, mathematics and society. In the field of Biological Sciences, the site has now included the two new categories Physiology and Zoology. While the Physiology section covers the functions of living organisms and their parts, the Zoology section covers animals and animal life, including the study of the structure, physiology, development, and classification of animals.
ScienceIndex.com's BioLifeSciences Category covers life and living organisms, including their structure, function, growth, origin, genetics, and distribution. Its ten sections include Agriculture, Anatomy, Biotechnology, Ecology, Environment, Forestry, Genetics, Microbiology, Physiology and Zoology. Users can receive alerts for newly published content in this category by subscribing to ScienceIndex.com's BioLifeSciences Category RSS feed.
ScienceIndex.com's Physiology Section covers the functions of living organisms and their parts. It currently contains 10,072 articles derived from 44 scientific journals. The latest articles in this category are also available through an Physiology Section RSS feed. One of the latest additions in this section proves that a neurosteroid potentiation site can be moved among GABAA receptor subunits. While endogenous neurosteroids are among the most potent and efficacious potentiators of activation of γ-aminobutyric acid type A (GABAA) receptors, it is not known whether potentiation requires that a steroid interact with the α subunit, or not. The authors mutated the homologous residue in the β2 and γ2L subunits to glutamine and found that these mutations could not confer potentiation by allopregnanolone (3α5αP) when expressed in receptors containing ineffective α1 subunits. Another recently included article describes differential mechanisms of tumor progression in clones from a single heterogeneous human melanoma. The authors conclude that VMM5 melanoma cells exhibit intra-tumor heterogeneity, and that the tumorigenicity of these clones is driven by different molecular pathways.
ScienceIndex.com's Zoology Section covers animals and animal life, including the study of the structure, physiology, development, and classification of animals. It currently contains 18,559 articles derived from 150 scientific journals. The latest articles in this section are also available through a Zoology Section RSS feed. One recently included article in this section covers molecular cloning, characterization and expression of Cathepsin D from grass carp (Ctenopharyngodon idella). The authors cloned and characterized the complete cDNA of grass carp cathepsin D through 5′- and 3′- RACE. Their results show that unlike many other organisms, the grass carp cathepsin D contains only one N-glycosylation site closest to the N-terminal. Their results suggest that cathepsin D plays a key role in innate immune response of teleost. Another article documents the health status of seabirds and coastal birds found at the German North Sea coast. The authors performed systematic pathological investigations to obtain data on possible causes of decline in seabird and coastal bird populations. They found that the nutritional status of the investigated birds was very poor, and the body mass in most cases was significantly low. This is partly linked to chronic parasitic or bacterial infections in different organs or to septicaemia.
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