Search Results - (Author, Cooperation:B. Nair)

2013-09-21

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Computer-Assisted Instruction/*statistics & numerical data/*trends ; Education, Distance/*statistics & numerical data/*trends ; Humans ; Internet/*utilization ; *Learning ; Science/*education ; Students/*psychology

2011-08-26

Nature Publishing Group (NPG)

0028-0836

1476-4687

Biology

Chemistry and Pharmacology

Medicine

Natural Sciences in General

Physics

Cholera/*epidemiology/microbiology/*transmission ; Genome, Bacterial/genetics ; Haiti/epidemiology ; Humans ; Likelihood Functions ; Molecular Epidemiology ; Pandemics/*statistics & numerical data ; Phylogeny ; Polymorphism, Single Nucleotide/genetics ; Vibrio cholerae/classification/*genetics/*isolation & purification ; Zimbabwe/epidemiology

2018-03-06

Oxford University Press

0923-7534

1569-8041

Medicine

1365-2133

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Five cases of reactive perforating collagenosis (RPC) are reported. Four of these cases were in a father and his three children. This is the first reported instance of RPC occurring in more than one generation.The clinical and histological features of the disease are described and compared with other disorders showing perforating skin lesions, such as Kyrle's disease, perforating folliculitis and elastosis perforans serpiginosa.Evidence is presented to show that RPC is a genetically determined disorder with an inherited predisposition to an unusual skin reaction to superficial trauma.

Electronic Resource

1600-0765

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

Lipopolysaccharide (LPS) has been purified from Bacteroides gingivalis. The purity of this LPS is evidenced on ultracentrifugation, immunoelectrophoresis, and chemical analyses. On comparison with LPS from aerobic enteric organisms, LPS from Bacteroides gingivalis exhibits minimal potency when tested for pyrogenicity in rabbits and mitogenicity in mouse spleen cells. On the other hand, purified LPS from Bacteroides gingivalis exhibits high potency in its ability to stimulate 45Ca release from prelabeled fetal rat bones and to inhibit Ca influx into osteoclast-like cells.

Electronic Resource

0020-1693

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource

0031-9422

Myristica dactyloides ; Myristicaceae ; ^1^3CNMR. ; polyketides ; seeds

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Biology

Chemistry and Pharmacology

Electronic Resource

0277-5387

Elsevier Journal Backfiles on ScienceDirect 1907 - 2002

Chemistry and Pharmacology

Electronic Resource

1365-4632

Blackwell Publishing Journal Backfiles 1879-2005

Medicine

: A comparative clinical evaluation of desoximetasone, a corticosterone derivative by a double blind study showed that desoximetasone has potent topical activity as effective as betamethasone valerate and Probably more effective than triamcinolone acetonide.

Electronic Resource

1420-9071

Neurospora crassa ; enzyme photoregulation ; cultures ; light-grown ; photoregulation ; enzyme ; carbohydrate metabolism

Springer Online Journal Archives 1860-2000

Biology

Medicine

Summary Light-grown cultures ofNeurospora crassa showed photoregulation of a number of enzymes. Proteases and cytosolic malate dehydrogenase showed an increase in activity. There was a decrease in the activity of mitochondrial malate dehydrogenase, isocitrate dehydrogenase and cytosolic glucose-6P-dehydrogenase, isocitrate dehydrogenase and isocitrate lyase.

Electronic Resource

1432-0827

Bacterial amphophile ; Purification ; Chemistry ; Resorption ; Ca influx ; Cyclic AMP

Springer Online Journal Archives 1860-2000

Biology

Medicine

Physics

Summary The bone resorptive factor and amphipathic antigen (AcA) previously identified by us in preparations fromActinomyces viscosus have been partially purified, characterized chemically, and compared. They elute at the same location on chromatography with Ac 22. The fatty acid composition of AcA and the bone resorptive factor is the same. Some differences in carbohydrate composition are observed. TheActinomyces factor does not affect calcium influx or cyclic AMP in isolated bone cells. Therefore it is concluded that AcA stimulates resorption either by gaining entrance into bone cells or by way of a yet undetermined second messenger.

Electronic Resource

1573-9104

Quinoa ; Starch ; Dietary fibre ; Availability ; Polymer degradation ; Saponins ; DSC ; Viscosity

Springer Online Journal Archives 1860-2000

Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition

Abstract We investigated certain properties of starch in raw and in heat-treated samples of quinoa, properties that are of importance to the nutritional quality of an infant food currently being developed. Scanning electron microscopy of the starch in raw seeds showed polygonal granules (0.6 to 2.0 µm diameter) to be present both singly and as spherical aggregates. Thermograms (DSC) of the flours showed one transition phase for gelatinisation of the starch and another for the amylose-lipid complex. The gelatinisation temperature of the starch was 67°C. Cooked samples manifested the highest degree of gelatinisation (97%), followed by the drum-dried (96%) and autoclaved (27%) samples. Separation of the starch on a SEPHAROSE CL-2B column showed the quinoa starch to be affected by the heat treatment, manifesting changes in the degree and extent of degradation. The amylograph viscosity of the quinoa flour showed no distinct peak for pasting, but the viscosity remained constant after gelatinisation. Cooking and autoclaving modified the viscosity of the paste. The drum-dried sample manifested a higher initial viscosity at 25°C. Thein vitro digestibility of raw quinoa starch determined by incubation for 60 min with α-amylase was 22%, while that of autoclaved, cooked and drum-dried samples was 32%, 45% and 73%, respectively. Saponins did not affect the digestibility of the starch, though they tended to increase the amylograph viscosity. The total dietary fibre content in the cooked sample (11.0%) was significantly lower than that in the autoclaved (13.2%), drum-dried (13.3%) or raw samples (13.3%), while the insoluble dietary fibre fraction in the samples did not change with heat treatment. However, as compared with that of raw quinoa, the soluble dietary fibre fraction was reduced significantly both by cooking (0.9%) and by autoclaving (1.0%).

Electronic Resource

1573-5117

Anthessius Spp. ; Anthessiidae ; Associates ; Tridacnidae ; Indo-west Pacific ; Tridachnophilus gen. nov.

Springer Online Journal Archives 1860-2000

Biology

Abstract Genus Anthessius includes 36 species. Previous attempts to clarify the interspecific affinities reached no definite conclusions. Humes and Ho (1965) found that, based on the armature of the third exopod segment of the fourth leg, the known species could be arranged into two groups, but that this difference did not correspond with host preferences. The present study of A. alatus Humes and Stock shows that species of Anthessius associated with Tridacnidae differ from the rest (except A. fitchi Illg) in the marked indentation of the cephalosome and in the presence of well developed cephalosomal and metasomal epimeral lobes producing a very characteristic shape. They are here removed to a new genus, Tridachnophilus.

Electronic Resource

1435-1536

Phase diagram ; reverse micelles ; liquid crystals ; conductivity ; viscosity

Springer Online Journal Archives 1860-2000

Chemistry and Pharmacology

Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Abstract The phase diagram for the ternary system deca glycerol dioleate(DGD)/heptane/water was established at 25 °C. In this phase diagram it was seen that the reverse micellar solution phase extends in its area until the water content reaches 35–45 wt%, at which a liquid crystalline phase begins to appear. On the basis of the experimental results of specific conductivity, viscosity, etc. for the samples containing a definite amount of DGD (0,1 M), and varying relative amounts of heptane and water, the mechanism of the transition of reverse micellar structures to liquid crystalline phase is discussed.

Electronic Resource

0021-9541

Life and Medical Sciences ; Cell & Developmental Biology

Wiley InterScience Backfile Collection 1832-2000

Biology

Medicine

The envelope glycoprotein (gp120) of HIV-1 was labeled with fluorescein by using 6-[4,6-dichlorotriazinyl]aminofluorescein. The labeled glycoprotein was found to bind to CD4-positive CEM cells. Monoclonal antibody OKT4a but not OKT4 blocked this binding. Similar specific binding of fluorescein-labeled gp120 with CD4 was observed in a solid-phase ELISA where sCD4 was attached to a polystyrene plate. The syncytium formation induced by HIV-1-infected cells on CEM cells was significantly inhibited in the presence of fluorescein-labeled gp120. Fluorescence photobleaching recovery measurements showed that the diffusion coefficient (D) of CD4 molecules complexed with fluorescein-labeled gp120 was approximately 5 × 10-10 cm2sec-1, with nearly 61 % of the receptor molecules being mobile. Binding of anti-gp120 monoclonal antibody to the CD4-gp120 complex reduced the mobile fraction significantly. Diffusion of CD4 labeled with OKT4 IgG was markedly inhibited with reductions in both D and the mobile fraction, but such inhibition was not observed with OKT4 Fab. It appears that crosslinking of multiple molecules of CD4 by OKT4 antibody is required to reduce CD4 mobility. This suggests that the receptor might be present on the membrane plane as molecular clusters containing at least two molecules of CD4.

4 Ill.

Electronic Resource