Abstract：
:Effects of Indian red scorpion (M. tamulus concanesis; MBT) venom on the compound action potential (CAP) of sciatic nerve in vitro were examined. MBT venom (0.1-6.0 micrograms/ml) prolonged the repolarization time and refractory period of the CAP in a concentration-dependent manner with maximal potentiation occurring at 6 micrograms/ml (about 100-200 times of the initial). At 1 microgram/ml of venom the prolongations were 40-50 times the initial durations and this concentration was used for subsequent experiments. Rise time, threshold, and conduction velocity of CAP were not altered by MBT venom (1 microgram/ml). In Ca(2+)-free medium, the venom-induced prolongations were only 2-6 times the initial response but addition of Ca2+ in the same medium then prolonged than by 50-70 times. The Ca2+ channel antagonists (nifedipine, 10 microM or Mg2+ ions, 5 mM) attenuated the venom (1 microgram/ml)-induced prolongation of repolarization time and refractory period. However, venom-induced prolongation of CAP responses were still significantly greater than the control in presence of these antagonists. The results indicate that MBT venom-induced increases in repolarization time and refractory period of the action potential greatly depend upon the presence of Ca2+ ions in the medium. The Ca2+ influx was through the L-type of Ca2+ channels.
journal_name
Indian J Exp Bioljournal_title
Indian journal of experimental biologyauthors
Deshpande SBkeywords:
subject
Has Abstractpub_date
1998-11-01 00:00:00pages
1108-13issue
11eissn
0019-5189issn
0975-1009journal_volume
36pub_type
杂志文章abstract：:Lipopolysaccharide (LPS) and ratio-detoxified LPS (Rd-LPS) from Salmonella typhimurium were analysed for their ability to stimulate murine peritoneal exudate cells (PEC) and macrophages. Rd-LPS induced much more inflammatory response as compared to LPS. PEC numbers/mouse obtained were significantly higher (3-fold) in ...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1999-03-01 00:00:00
abstract：:Indian toad (Bufo melanostictus, Schneider) skin extract (TSE) is pharmacologically potent and probably contains several bioactive compounds [Das et. al., Indian J Pharmacol, 28 (1996) 72]. A lethal factor was isolated and purified by neutral alumina column chromatography followed by HPLC. Spectroscopic (UV, IR, FAB-M...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2001-08-01 00:00:00
abstract：:A simple dot-immunobinding assay (Dot-Iba) in nitrocellulose paper was developed for the detection of specific IgG antibody to Mycobacterium tuberculosis antigen 5 and mycobacterial antigen in cerebrospinal fluid of patients with tuberculous meningitis (TBM). The assay gave 77.1% sensitivity for the detection of IgG a...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1991-05-01 00:00:00
abstract：:Antinociceptive activity of methanolic extract of leaves of A. aspera was studied by peripheral/non-narcotic model of nociception like acetic acid induced writhing syndrome test and central/narcotic models like hot plate and tail flick tests. The methanolic extract of the plant, administered orally (@ 300, 600 and 900...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2010-08-01 00:00:00
abstract：:Anabaena oryzae ARM 570 was examined for its growth (chlorophyll and protein), heterocyst frequency, nitrogenase (acetylene reduction) activity, ammonia excretion, and glutamine synthetase and nitrate reductase in response to two levels of urea-N vis-à-vis N2-N. Growth of cyanobacterium increased with duration of incu...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2002-07-01 00:00:00
abstract：:Mouse melanoma cells were treated with plumbagin, a naphthoquinone, from the plant Plumbago rosea at 0.5 microgram/ml (PI) for 60 min either alone or followed by 2 Gy gamma radiation (RT). Response to the different treatments was assessed by following the cell growth up to 5 days post treatment. PI alone produced a si...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1996-09-01 00:00:00
abstract：:In the present study, antibacterial activity of aqueous and organic extracts of Psidium guajava leaves was evaluated against multidrug resistant (MDR) clinical isolates of Staphylococcus aureus strains collected from hospitals in northern (Malabar region) Kerala. The strains which exhibited resistance against all the ...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:Leukotrienes play a part in inflammatory response. The unique role of the enzyme 5-lipoxygenase (5-LOX) in the production of leukotrienes makes it a likely therapeutic target for inflammatory conditions like asthma, rheumatoid arthritis, psoriasis, and inflammatory bowel disease (IBD). The aim of the present study was...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2004-07-01 00:00:00
abstract：:Breast cancer susceptibility gene (BRCA1) is known to be responsible for hereditary breast and ovarian cancer. This gene is highly penetrant conferring a risk for 0.92 by the age of 70. Germline mutation in this gene leads to susceptibility to breast and ovarian cancer, with a genotype phenotype correlation. Frequency...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章,评审
doi：
更新日期：2001-05-01 00:00:00
abstract：:The mechanism of Agrobacterium mediated genetic transformation of plants is dependent upon certain genetic function of the chromosome of the bacterium as well as on Ti-plasmid borne vir loci and the border sequences of T-DNA. The organisationally variable forms of the naturally occurring border sequences amongst Ti-pl...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1991-11-01 00:00:00
abstract：:N-Cyclohexyl-3-methoxyquinoxalin-2-carboxamide (QCM-13), a novel 5-HT3 antagonist identified from a series of compounds with higher pA2 (7.6) and good log P (2.91) value was screened in rodent models of depression such as forced swim test (FST), tail suspension test (TST), interaction studies with standard anti-depres...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2011-08-01 00:00:00
abstract：:Drymaria cordata hydroethanolic extract (DCHE) at 25, 50 and 100 mg/kg (p.o.) was administered to study anxiolytic effect. Different models for anxiolytic activity viz. Hole board, Open field, Elevated plus maze, Light/dark exploration model were used. In the hole board model, there was dose dependent and significant ...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2009-12-01 00:00:00
abstract：:Polypeptides synthesized from polysome-bound and unbound fractions of polyA mRNA were studied by in-vivo cells labelling and cDNA-mRNA hybrid-arrest translation. The polypeptides synthesized from unbound(free) fraction appeared to be significantly reduced in the absence of cycloheximide in L6 myoblast. The cDNA excess...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1997-09-01 00:00:00
abstract：:Effects of weekly 8 hr advance- or delay-shifts on the circadian rhythm of plasma glucose, liver glycogen and muscle glycogen in male domestic fowls, beginning at about 3 days of age, were examined. Circadian rhythm in the aforesaid indices of carbohydrate metabolism in control birds was also studied. Blood and tissue...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1992-02-01 00:00:00
abstract：:A cobalt-resistant wall-less mutant of N. crassa (Cor-sl) characterized previously was also found to be 3-fold more resistant to nickel when compared to the parent wall-less mutant (W-sl). The Cor-sl strain accumulates relatively lower amounts of nickel when compared to W-sl. Sub-cellular fractionation showed signific...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2004-11-01 00:00:00
abstract：:Significant reduction (68.38%) in sheath blight disease of rice was noticed when foliar spray of a systemic fungicide, kitazin (480 micrograms mg-1), was applied twice at an interval of 2 days before inoculation. SDS-PAGE analysis of proteins of Rhizoctonia-infected rice leaf sheaths revealed the presence of 16 protei...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1997-06-01 00:00:00
abstract：:Natural Killer activity assessed by 51Cr release assay from K-562 cells showed detectable activity from 5th day after tumour transplantation, reaching a peak on 12th day and thereafter showing a gradual decline in the activity. Antibody dependent cell mediated cytotoxicity estimated by 51Cr labelled sheep red blood ce...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1989-06-01 00:00:00
abstract：:Ten isoleucine+valine and three leucine auxotrophs of Sinorhizobium meliloti Rmd201 were obtained by random mutagenesis with transposon Tn5 followed by screening of Tn5 derivatives on minimal medium supplemented with modified Holliday pools. Based on intermediate feeding, intermediate accumulation and cross-feeding st...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2002-10-01 00:00:00
abstract：:Present work was undertaken to ascertain the hepatoprotective effect of Swertia chirata in albino rats. Intraperitoneal injection of CCl4 (1 ml/kg body wt on every 72 hr. for 16 days) significantly increased serum aspartate aminotransferase (ASAT), alanine aminotransferase (ALAT), and alkaline phosphatase (ALP) activi...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1997-04-01 00:00:00
abstract：:Flower extract of C. officinalis L. was evaluated for its protective effect against CCl4 induced acute hepatotoxicity and cisplatin induced nephrotoxicity. The activities of serum marker enzymes of liver injury like glutamate pyruvate transaminase (SGPT), glutamate oxaloacetate transaminase (SGOT) and alkaline phospha...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2009-03-01 00:00:00
abstract：:The p38 mitogen activated protein kinase (p38MAPK) pathway is an important signaling cascade involved in cell growth, differentiation and apoptosis. High glucose activates p38MAPK pathway in different cells, including osteoblasts. In the present study, role of p38MAPK in high glucose induced osteoblast apoptosis and p...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2011-02-01 00:00:00
abstract：:The present study has been undertaken to observe the effect of aqueous extract of M. oleifera (MO) leaf (300mg/kg body weight) on mean ulcer index, enterochromaffin (EC) cells and serotonin (5-hydroxytryptamine; 5-HT) content of ulcerated gastric tissue. Ulceration was induced by using aspirin (500 mg/kg, po), cerebel...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2007-08-01 00:00:00
abstract：:With respect to 31 different selected test bacteria, all sensitive to benzyl penicillin (Pc), ampicillin (Ap), methicillin (Me), ceporan (Ce), cloxacillin (Cx), streptomycin (Sm), kanamycin (Km), gentamicin (Gm), chloramphenicol (Cm), tetracycline (Tc), polymyxin (Pm) as well as ambodryl [Am; an antihistamine (bromodi...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:Most phenolic substances of plant origin are toxic to microorganisms and they confer some degree of protection to plants against phytopathogens. Xanthomonas oryzae pv. oryzae, bacterial blight pathogen of rice (Oryza sativa) was treated with phenol (monohydroxy benzene) and its effects on the morphology and cytologica...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Five sheep were intoxicated with powdered L. camara, leaves at the rate of 200 mg/kg body weight daily for 110 days and another group of four sheep were drenched with distilled water daily for equal number of days which acted as control. The cell mediated immunity of intoxicated and control sheep was assessed with the...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1991-08-01 00:00:00
abstract：:Effect of feeding isolated dietary fiber from M. paradisiaca on the metabolism of carbohydrates in the liver has been studied. Fiber fed rats showed significantly lower levels of fasting blood glucose and higher concentration of liver glycogen. Activity of glycogen phosphorylase, glucose-1-phosphate, uridyl transferas...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1989-05-01 00:00:00
abstract：:Administration of CCl4 to normal rats and consequent oral feeding with ellagic acid (50 mg/kg) provided a significant protection against the biochemical alterations in serum and liver produced by CCl4. In vitro experiments showed that liver microsomes from animals treated with ellagic acid and CCl4, decreased lipid pe...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1999-10-01 00:00:00
abstract：:Reduction of p-benzoquinone to hydroquinol has been studied using Saccharomyces cerevisae and S.uvarum. Maximum conversion of p-Benzoquinone (p-BQ) to Hydroquinol (HQ) at a substrate concentration of 6%. S. cerevisae was found to be better than S. uvarum. No further conversion did take place after 60 hr. Optical innoc...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:Saponins, isolated from M. butyracea, were assessed for their acute and subacute oral toxicity in albino rats. Acute doses of saponins caused mortalities and LD50 and LD90 values were 330 and 430 mg/kg body wt respectively. Severe diarrhoea, restlessness and histopathological changes were observed in liver and kidney....
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1990-07-01 00:00:00
abstract：:Amines such as dopamine, norepinephrine and epinephrine were analysed in the brain regions of O.mossambicus exposed to quinalphos, phenthoate and their combination for 96 hr. The three types of treatments significantly (P < 0.05) altered the amines level at various intervals in the brain regions. ...
journal_title：Indian journal of experimental biology
pub_type： 杂志文章
doi：
更新日期：1997-06-01 00:00:00
