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 antibiotics tested was selected for antibacterial assays. Minimum inhibitory concentration (MIC) for methanolic and aqueous extracts was found to be 625 ug/ml and 7.5 mg/ml, respectively. Minimum bactericidal concentration (MBC) recorded for methanolic and aqueous extracts was 1.25 and 12.5 mg/ml, respectively. Methanolic extract at minimum bactericidal concentration inhibited the growth of MDR strain by 80%. Time-kill assay revealed that methanolic extract (4 mg/ml) killed MDR bacteria within 10 hr. Total polypeptide profiling of bacterial cultures by SDS-PAGE indicated a high degree of protein degradative activity of the extract. Finally, a human RBC based haemolytic assay showed absence of haemolysis even at concentrations higher than that of MBC, advocating thereby its safety in therapeutic use.
journal_name
Indian J Exp Bioljournal_title
Indian journal of experimental biologyauthors
Anas K,Jayasree PR,Vijayakumar T,Manish Kumar PRsubject
Has Abstractpub_date
2008-01-01 00:00:00pages
41-6issue
1eissn
0019-5189issn
0975-1009journal_volume
46pub_type
杂志文章abstract::The Vero cell culture adapted buffalo pox virus was found to be completely attenuated at 40th passage for rabbits as well as buffaloes since it did not produce any thermal reaction or skin lesions. It induced high level of humoral and cell mediated immune response in rabbits as well as buffaloes. The antibody titres o...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1989-04-01 00:00:00
abstract::The epithelial and mesothelial cellular components of organs can be obtained as dissociated cells using adequate procedures of enzymatic digestion followed by pycnotic separation on density gradients. Using a specially developed procedure for tissue dissociation, the epithelial and connective tissue components of endo...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2003-06-01 00:00:00
abstract::Pseudomonas aeruginosa is one of the commonest pathogens among the pseudomonads. This organism can grow in minimal nutritional requirements. Because of the ability of pseudomonads to grow on paraffin is not commonly found among other human pathogens and the primary human pathogen being P. aeruginosa, we studied the ad...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2007-03-01 00:00:00
abstract::The present study is planned to assess the diagnostic relevance of silver stained nucleolar organizer regions (NORs) in discriminating benign from malignant lesions of the breast and to ascertain the interobserver variability in the enumeration of AgNOR counts. Forty four specimens of benign and malignant breast tissu...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1995-10-01 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::Efficacy of vilva, a polyherbal formulation was evaluated in morphine induced constipated rats. Vilva juice, at a dose of 1.5 ml/100 g body wt was given orally for a period of 7 days. Morphine sulfate was injected to induce constipation on 8th day, 45 min before the experiments. Protein bound glycoconjungates were est...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2004-10-01 00:00:00
abstract::Four heterocystous cyanobacteria, isolated from grasslands of Ujjain were selected to prepare the clay based inoculants. Inoculants were evaluated for shelf life in terms of the titer value at 6 month intervals for 24 months. For colonization by inoculants in natural grasslands, the clay based inocula were applied to ...
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::Shoots of apple rootstocks raised in vitro were transferred to various rooting media to study the effect of different factors on root initiation and development. Various concentrations of indole-3-butyric acid (IBA) initiated rooting but maximum rooting percentage was found with 2.0 and 2.5 mg l(-1) of IBA in M7 and w...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2007-09-01 00:00:00
abstract::In presence of 7.5 microM of curcumin, no embryos or larva of zebrafish survived 3 days of incubation; however, coincubation with 144 microg/ml silymarin increased the survival rates of curcumin-treated embryos and larvae to about 70%. Moreover, in presence of 12.5 microM curcumin, all embryos died after 2 days of inc...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2011-07-01 00:00:00
abstract::The present study was undertaken to evaluate the role of propofol in altering pentylenetetrazol induced seizure threshold in rats. Total 42 Wistar rats were used to evaluate different parameters (onset of action, duration of seizure, seizure severity score and number of seizure) following propofol injection. The prese...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
abstract::Prevalent notion about thyroid hormones is that thyroxine (T4) is a mere precursor and physiological effects of thyroid hormones are elicited by tri-iodothyronine (T3) after mono-deiodination of T4. Earlier studies on feather regeneration and molt done on spotted munia L. punctulata suggest that T4 (mono-deiodination ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2014-05-01 00:00:00
abstract::Thermoactinomycetes vulgaris is a thermophilic actinomycetes growing optimally at 50 degrees C and Streptomyces albus, S. coelicolor, S. fasciculus and S. olivochromogenes are thermophilically disposed transition species of actinomycetes, which have optimum biomass at 40 degrees C. The acid/alkaline phosphatase and ac...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1997-05-01 00:00:00
abstract::Spirulina platensis treatment (400 mg kg(-1) for 25 days) effectively suppressed peripheral sensitization via modulation of glial activation and improved motor coordination and restoration of functional motor activity in collagen-induced arthritic rats. Spirulina treatment also resulted in an appreciable reduction of ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2011-10-01 00:00:00
abstract::Mouse B16LuF1 melanoma cells of lower metastatic potential to lung were treated in vitro with same concentration (50 microM) of gangliosides prepared from plasma of mice bearing lung metastasis of B16LuF5, B16LuF9 or B16LuF10 melanoma cell lines of increasing metastatic potential to lung (LuF1 < LuF5 < LuF9 < LuF10) a...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2004-10-01 00:00:00
abstract::Eight entomopathogenic nematode species / strains, Steinernema glaseri (steiner), S. carpocapsae (Weiser), S. feltiae (Filipjev), Steinernema sp. Ecomax strain, Heterorhabditis bacteriophora (Pioner), Heterorhabditis sp. Ecomax strain, two locally isolated strains called as JFC and TFC were tested against the final in...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::The effects of A. indica (AI, Neem) were evaluated on tests of humoral and cell-mediated immune responses after 3 weeks of oral AI (leaf extract) treatment in ovalbumin immunized mice. At the dose levels tested, AI (10, 30 or 100 mg/kg), had no appreciable influence on different organ (liver, spleen, thymus)/body weig...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1996-07-01 00:00:00
abstract::In vitro effects of various organophosphate pesticides (dimethoate, chlorpyrifos, ethion and monocrotophos) were studied on hemolysis, K+ leakage and lipid peroxidation in rat erythrocytes. All the four pesticides increased hemolysis and K+ leakage from erythrocytes, that was concentration and time dependent. On the c...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2004-03-01 00:00:00
abstract::Poor development and differentiation of three layered cytoarchitectural pattern of brain, degenerating pyramidal cells with pyknotic nuclei and substantial loss of both large and small pyramidal cells of the hippocampal CA1 region were observed in fetuses of pregnant Charles-Foster rats exposed to single high dose of ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Cimetidine has been demonstrated to impair microsomal oxidative drug metabolizing and other enzyme systems in mouse liver. The inhibition is rapid, occurring after a single administration and also found to be dose-dependent. It is more significant after daily administration for 15 days. Enzyme inhibition by ranitidine...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::Di-n-butyl phthalate (DBP) was administered to adult male rats by gavage at the doses of 250, 500 and 1000 mg/kg body weight/day for 15 days. A significant decrease in epididymal spermatozoa counts was observed at 500 and 1000 mg/kg doses of DBP. The activity of sorbitol dehydrogenase was found to be significantly dec...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1990-01-01 00:00:00
abstract::Nutritional deprivation induced by increasing the litter size and subsequent dietary restriction results in rats having lower body weights and body lengths. Such undernourished rats have lower body temperatures as well as lower basal metabolic rate and nonshivering thermogenesis on a metabolic body weight basis; they ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1990-10-01 00:00:00
abstract::Significant degenerative changes were observed in the kidney tissue of untreated neonatal streptozotocin (n0STZ)-induced type-II diabetic rats. These degenerative changes were diminished in the kidney tissue of diabetic animals given glibenclamide and Aloe leaf gel and pulp extracts. Kidney lipid peroxidation levels w...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract::Wheat peptides (0.5 to 3 KDa M(r)) mimick hormonal activity like that of gibberellins and forced open dark closed stomata. The deionized amphoteric peptides solution after passing through cation and anion exchanger resins was run through Amicon's ultrafilters, 10, 3 and 0.5 kDa (M(r)) cut off system. The 3 to 0.5 kDa ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2010-01-01 00:00:00
abstract::This paper aims at studying the response of the housefly labellar chemoreceptor to stimulation by KCl. These studies are limited to testing various concentrations of KCl solutions (0.005-1 M), using the electrophysiological "tip recording" method and examining the various spike characteristics such as threshold, phasi...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1990-04-01 00:00:00
abstract::Various storage treatments on human blood samples have been described with respect to DNA yield, quality and fingerprinting. Blood samples were stored at room temperature, 4 degrees C, -20 degrees C and -70 degrees C for different duration varying from 1, 2, 4 and 8 weeks with or without anticoagulant/preservative (ED...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1996-04-01 00:00:00
abstract::Molecular oxygen, a diradical, needs intervention of redox metal ions or other radicals to receive electrons for its reduction. The oxygen radicals thus produced are responsible for oxygen toxicity and oxidative stress. But, autoxidation, relevant in ischemia-reperfusion injury, is absent in any discussion on oxygen t...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2016-11-01 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::Testosterone priopionate (TP) or estradiol-17 beta (E2) were injected into male and female rats from day of birth to 15 days of age to determine the effect of these steroids on the pituitary prolactin (PRL) level in developing rats. Animals were autopsied on Days 5, 7, 10, 14, 17, 22, 25, 30, 37, 45, 52, and 60 and p...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1977-08-01 00:00:00
abstract::Thirteen strains of M. bovoculi, 6 from frozen bull-semen (3.5% of 168), 3 from neat bull-semen (3.0% of 100), one each from heart blood and stomach contents of aborted foetus of 85 (1.18%) bovine-abortions, one each from stomach contents and pooled internal organs of 9 (11.1%) stillborn calves, were isolated. All the...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
abstract::Following treatment, cypermethrin and fenvalerate, were found to have inhibitory effect on serum acetylcholine esterase (AchE) activity of cattle and buffalo experimentally infested with B. microplus. The pattern of AchE activity in infested-pyrethroid-treated group was found to be significantly different from either ...
journal_title:Indian journal of experimental biology
pub_type: 杂志文章
doi:
更新日期:1990-03-01 00:00:00