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Biosynthesis of Very Long Chain Polyunsaturated Fatty Acids in Chicory
Hattem Mekky1, Michael R. Davey1, J. Brian Power1 , Maged E. Mohamed2 and Colin M. Lazarus2

Very long chain polyunsaturated fatty acids (VLCPUFAs) are declining in reserves, since they are produced by oily fish. VLCPUFAs are important in human nutrition because they are responsible for the production of inflammatory mediators such as prostaglandins, the regulation of cholesterol synthesis and its transport, and the maintenance of cellular membranes. This research aims to produce VLCPUFAs in edible plants.

qPCRas a primary screen in drug discovery
GauravJaggi, Frank Boeckler, Andreas Joerger and Alan Fersht

We report the use of qPCR technique to follow the thermal unfolding of proteins by the binding of the dye SYPRO Orange, and exploit its potential as a robust and high-throughput primary screen for small molecule drug discovery.

Heterochromatin structure is induced by siRNA targeting HIV-1 promoter region
K Suzuki1, H Lim1,3, T Ishida2, T Watanabe2, D Cooper1,3, A Kelleher1,3

We transfected siRNA targeting HIV-1 promoter region into a cell line productively infected with HIV-1. ChIP analysis revealed that the RNA duplex induced transcriptional gene silencing and enrichment of Ago1, H3K9me2, and HDAC1 in HIV promoter region to form heterochromatin structure. The data indicates RNA duplex induces the latent phase of HIV infection, since the chromosome formation is very similar to the state of HIV latently infected cell lines

Evolution of the Contact Phase of Vertebrate Blood Coagulation
M. B. Ponczek, D. Gailani and R. F. Doolittle

Three proteases involved in the contact phase of vertebrate blood coagulation were searched in genomes of amphibians, birds and mammals. Several data sources were used during this bioinformatics analysis. Our survey confirmed that the vertebrate contact phase has occurred by way of a series of gene duplications during the course of several hundred million years of evolution, beginning with the appearance of fXII and a PK-fXI predecessor in amphibians.

Drop distribution determination in a liquid-liquid dispersion by image processing
Brás, L.M.R., Gomes E.F., Ribeiro M. M. M., Guimarães M. M. L.

Image processing is a very relevant area of computer science with applications in many domains. Quantitative analysis and interpretation of digitized images is currently an important tool in several scientific domains. The aim of the present work is the development of shape discrimination and size classification algorithms for liquid drops in monochromatic digitized frames.

Analysis of in silico stereoelectronic properties of PMD (p-menthane-3-8-diols) and its derivatives to develop a pharmacophore for insect repellent activity
Bhattacharjee AK, Chauhan K, Bathini N, Greico J, Achee N, Lawrence K, Benante JP and Gupta RK

PMD, an insect repellent that can be derived from steam distillate residue of leaves of lemon eucalyptus. No QSAR studies are known in literature. We performed ab initio (RHF/6-31G**) study of PMD derivatives. A 3D pharmacophore for repellent activity was also developed. Results indicate lipophilicity, MEP separation and localized negative MEP by oxygen atom have roles for repellency. The pharmacophore is consistent and allowed design of more effective insect repellents.

1V. Vázquez,1O. Vázquez, 1,2M.A.Balboa, 1A. Ma. Velázquez, 1V.H. Abrego, 1B.Camacho, 1L. Martínez, 1L.A. Torres, 1A. Ramírez, 1I.Martínez, 3R.López-Castañares, 1S.Díaz-Barriga, 4J. Bocanegra, 4Froylan Gómez-Laguna, 1F. Olvera, 1E.Angeles.

As part of the Drug Design in Medicinal Chemistry Program of the UNAM, new methylthiomorpholinphenol compounds with cardiovascular effect, were studied. One of them, FESCDIPINE II, was an excellent antihypertensive drug, that has low toxicity and preliminary studies indicate that the Angiotensin-converting enzyme (ACE) system is the biological target of this compound.

3D-QSAR Common Feature Pharmacophore Model for Polyphenols as Potential Anti-Malarial Agents
Shruti Saxena, Amit K. Gupta & Mridula Saxena

3D QSAR studies have been carried out on a series of polyphenols for their antimalarial activity using CATALYST program. Hypothesis with three features namely hydrophobic (1), hydrogen bond donor (1) and hydrogen bond acceptor (1) was found to the best, which mapped well with the most active and least active compound of the test set. This model can be used to develop drugs for malarial chemotherapy.

S.N. Morozkina, O.I. Antimonova, E.M. Eremenko*, A.G. Shavva

Ursolic and betulinic acids acids induce the processes of apoptosis. We tested the risk of osteoporosis induction under influence of triterpenoids, since they can interact with glucocorticoid receptors. In experiments on oviriectomized rats we found that acids do not show any negative influence on percentage of mineral components in the femur and have cholesterol-lowering action under experimental conditions.

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