Agrobacterium tumefaciens biovar 3 causes both crown gall and root decay of grapes. All biovar 3 strains, regardless of their tumorigenicity, produce in culture a single polygalacturonase with a pI around 4.5. A. tumefaciens biovar 3 strain CG49 was mutagenized with Tn5 by using pSUP2021 as a suicide vector. A mutant strain, CG50, lacking polygalacturonase activity was isolated. The mutation wa...

Young children with their hand-to-mouth activity may be exposed to contaminated soils. However few studies assessing exposure of organic compounds sequestrated in soil were realized. The present study explores the impact of different organic matters on retention of NDL-PCBs during digestive processes using commercial humic substances in a close digestive model of children: the piglet. Six artif...

Background: To explore the association of COL2A and Aggrecan polymorphisms and the susceptibility of intervertebral disc degeneration (IVDD). Methods: IVDD patients (n = 354) in Spinal Surgery department of our hospital between June 2010 and June 2013 were allocated to the case group. Healthy people (n = 310) were allocated to the control group. The distribution frequency of COL2A and Aggrecan ...

background & aim: lumbosacral pain is extremely common as age increases. spinal instrumentation is sometimes recommended for lumbar canal stenosis and disk herniation surgery. this study aimed at studying the frequency of instrumentation in patients referring to our center. methods & materials/patients: this retrospective cross-sectional study included 1200 patients with low back and/or radicul...

background: trichomoniasis is a worldwide protozoan parasitic disease and metronidazole is a choice drug for its treatment. because of disease importance in public health and its controversial ideas about the prevalence of drug resistance, this study was carried out. methods: fifty-two suspected vaginal samples were collected from 2006 to 2007 in gynecology maryam hospital, tehran, iran. all is...

localizing the optic disc (od) in retinal fundus images is of critical importance, since it is very similar to hard exudates (found in pathology) in color and brightness. because of the importance of od localization in clinical applications, many techniques have been developed. in this paper, we present the results obtained from two methods, correlation and least square, to approximate the opti...

conclusions using the pcr-rflp method, three distinctive h. pylori caga genotypes were detected in antral biopsies. genotype i, which was predominant among the isolates, was significantly associated with gastritis. however, the data showed that caga genotype iii may play a role in duodenitis and duodenal ulcers in patients infected with h. pylori. patients and methods a total of 161 gastric bio...

objective(s)                                                                                                                                                                               aim of the present study was to screen the antibacterial activities of some medicinal plants extracts traditionally used in azarbaijan area (iran). materials and methods thirty-six extracts obtained from differ...

in a retrospective study the clinical presentations, neurological findings, contrast studies, operative findings, and the follow-up results of 314 patients with disc herniation were studied over a 10-year period. this disease was most frequent between the ages of 30 to 40 and mostly in males. low back pain with or without radicular pain was the most frequent symptom, involving the left leg in t...

background & aim: low back pain is broadly documented as one of the most widespread pathologies in the advanced domain. although the reasons of low back pain are uncountable, it has been meaningfully related to intervertebral disc degeneration. present therapies for intervertebral disc (ivd) degeneration such as physical therapy and spinal fusion reduce symptoms' severity, but do not treat the ...