Functional analysis of the Bunyamwera orthobunyavirus Gc glycoprotein

The virion glycoproteins Gn and Gc of Bunyamwera orthobunyavirus (family Bunyaviridae) are encoded by the M RNA genome segment and have roles in both viral attachment and membrane fusion. To investigate further the structure and function of the Gc protein in viral replication, we generated 12 mutants that contain truncations from the N terminus. The effects of these deletions were analysed with regard to Golgi targeting, low pH-dependent membrane fusion, infectious virus-like particle (VLP) formation and virus infectivity. Our results show that the N-terminal half (453 residues) of the Gc ectodomain (909 residues in total) is dispensable for Golgi trafficking and cell fusion. However, deletions in this region resulted in a significant reduction in VLP formation. Four mutant viruses that contained N-terminal deletions in their Gc proteins were rescued, and found to be attenuated to different degrees in BHK-21 cells. Taken together, our data indicate that the N-terminal half of the Gc ectodomain is dispensable for replication in cell culture, whereas the C-terminal half is required to mediate cell fusion. A model for the domain structure of the Gc ectodomain is proposed

ETHNO-BOTANICAL CLAIMS COLLECTED FROM TRIBAL AND RURAL PEOPLE OF KADAPA DISTRICT, ANDHRA PRADESH

The main aim of the study is to collect the ethnobotanical claims on therapeutic actions of twenty-seven (27) plant species belonging to Fourteen (14) families of angiosperms; practicing by tribal and rural people of Kadapa district, Andhra Pradesh. The study was directed in the tribal villages and provincial regions like; Badvel, Balapalli, Chitvel, Guvvala cheruvu, Kukkaladhoddi, Lankamalai, Mamandur, Palakonda hills, Pulivendula, Rajampeta, Rayachoti and Settipalli in Kadapa District. The governed tribal populations in these regions are Yanadhi accompanied by Yerukula, Nakkala, and Sugalis. Tribal and rural people of the investigated areas have been applying all these plant materials in the form of ash, boiled, crude, curry, decoction etc. for treating 27 disease conditions like; anorexia, bilious affections, piles, burning sensation in the stomach, cold and cough, dandruff, dental diseases, diarrhoea, dyspepsia, redness of eye, facial paralysis, fever, fissures, cracks, flatulence, haemorrhage, hair loss, indigestion, intestinal ulcers, loss of libido, migraine, pains, swellings etc. The botanical name, family name, habit, habitat, part(s) used, flowering and fruiting time, the name of the diseases against which the plants are used and mode of administration with dosage for most of the claims is discussed in detail. The provided information could be used to find new medications of natural origin by the systematic research on pharmacological and clinical trials

Ethnopharmacognastical investigation on Ipomoea pes-tigridis Linn.

The present investigation was undertaken to analyze the Pharmacognostical, physicochemical and preliminary phytochemical profile in the leaves and roots of Ipomoea pes-tigridis Linn. with the back ground of Ethnic importance. This plant is used by the tribes of Nellore district as a single drug remedy to treat as Laxative and skin diseases. In the present work the leaf and root part of the plant were subjected to various microscopical and physico- preliminary phyto chemical evaluations. In the microscopical studies, the different cell structures and arrangements were studied. Physicochemical parameters like loss on drying, total ash value, acid insoluble ash, water insoluble ash, various extractive values etc., were carried out. Further, qualitative tests for various functional groups like Triterpenoids, alkaloids, glycosides etc..., were carried out