نتایج جستجو برای: toxin co

تعداد نتایج: 383351  

Journal: :international journal of agricultural science and research 2012
n. mohamad amini1 h. zamanizadeh k. larijani s. h. hajmansoor

brown spot disease caused by alternaria alternata (fr.: fr.) keissl is a serious problem forproduction of tangerines and tangerine hybrids in iran. the tangerine pathotype causes brownspot disease on young leaves and immature fruits of limited varieties of mandarins and tangerines(citrus. reticulata blanco). specificity in the interaction between tangerine and the pathogen isdetermined by a hos...

Journal: :Journal of bacteriology 2000
P J McNamara K C Milligan-Monroe S Khalili R A Proctor

A chromosomal insertion of transposon Tn917 partially restores the expression of protease and alpha-toxin activities to PM466, a genetically defined agr-null derivative of the wild-type Staphylococcus aureus strain RN6390. In co-transduction experiments, transposon-encoded erythromycin resistance and a protease- and alpha-toxin-positive phenotype are transferred at high frequency from mutant st...

2014
Jia Wen Daniel Won Elizabeth M. Fozo

Type I toxin-antitoxin loci consist of two genes: a small, hydrophobic, potentially toxic protein, and a small RNA (sRNA) antitoxin. The sRNA represses toxin gene expression by base pairing to the toxin mRNA. A previous bioinformatics search predicted a duplicated type I locus within Escherichia coli O157:H7 (EHEC), which we have named the gene pairs zorO-orzO and zorP-orzP. We show that overpr...

Journal: :Iranian biomedical journal 2008
Bita Bakhshi Mohammad Reza Pourshafie Farahtaj Navabakbar Akbar Tavakoli Fereshteh Shahcheraghi Mansoor Salehi Ziba Faradjzadegan Seyed Mohsen Zahraei

BACKGROUND The virulence of a pathogenic Vibrio cholerae is dependent on a discrete set of genetic determinants. In this study, we determined the distribution of virulence determinants among the clinical and environmental isolates of V. cholerae. METHODS The antibiotic resistance profiles of the isolates were determined using standard disk diffusion assay. PCR assay was performed to analyze t...

Bahadori MH Marefatpour E, Movahedi M

Background: Cobalt (Co) is an essential trace element for mammals required for the synthesis of vitamin B12. It is not a cumulative toxin but chronic exposure induces negative effects on the organism. It was proven that cobalt passes via placenta appearing in the fetal blood and amniotic fluid and it is shown to possess an embryotoxic effect. Also, chromium (Cr) is recognized as a trace element...

منتظری, قدرت اله, دریانی, ناصر , سیاوشی, فریده , محمودی, وحید , ملک زاده, رضا ,

Clostridium difficile toxin was checked in fecal extract of 62 ulcerative colitis patients and 62 normal controls, by Elisa and cell culture methods. Clostridium difficile toxin was found in 48.71 percent of ulcerative colitis patients in their acute exacerbations, and in 26.08 percent of cases in their remissions. This toxin was found in the fecal extract of only 3 percent of normal controls. ...

Journal: :acta medica iranica 0
massoud keyhani

certain strains of staphylococcus aureus produce a toxin which cause epidermal exfoliation within 18 hours after direct subcutaneous or intraperitoneal injection into newborn mice. the extracellular product responsible for exfoliation is termed exfoliative toxin (et). in the present studies a modified assay system has been developed for detection of exfoliativeactivity in toxin negative strains...

Journal: :iranian journal of mathematical chemistry 2015
a. maden e. kaya

in this paper, we present some inequalities for the co-pi index involving the some topological indices, the number of vertices and edges, and the maximum degree. after that, we give a result for trees. in addition, we give some inequalities for the largest eigenvalue of the co-pi matrix of g.

Journal: :journal of algebra and related topics 2014
s. ebrahimi atani s. dolati pish hesari m. khoramdel

in this paper, we introduce the notion of primal strong co-ideals and give some results involving them. it is shown thatsubtractive strong co-ideals are intersection of all primal strong co-ideals that contain them. also we prove that the representation of strong co-ideals as reduced intersections of primal strong co-ideals is unique.

Journal: :international journal of preventive medicine 0
majid ghasemi mehri salari fariborz khorvash vahid shaygannejad

background: a variety of techniques for the management of spasticity have been suggested, including positioning, cryotherapy, splinting and casting, biofeedback, electrical stimulation, and medical management by pharmacological agents, botulinum toxin a (bta) is now the pharmacological treatment of choice in focal spasticity. bta by blocking acetylcholine release at neuromuscular junctions acco...

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