البحث — المستودع الرقمي العراقي

نتائج البحث: 17 من أصل 42

انتشار المقاومة للمضادات الحيوية وبعض عوامل الضراوة في بكتريا Pseudomonas aeruginosa المعزولة من مستشفيات في النجف المعزولة من مستشفيات في النجف == Molecular Study To Some of Pseudomonas Aeruginosa Virulence Factors Isolated From Clinical And Environmental Isolates

اسم المؤلف: ذو الفقار حيدر حسن

اسم المشرف: ماجدة مالك متعب

الموضوع العام: علوم الحياة

السنة: 2013

الموضوع الدقيق: الاحياء المجهرية

الدرجة: ماجستير

الجامعة: جامعة الكوفة - كلية التربية للبنات - قسم علوم الحياة

اللغة: العربية

مكان الجامعة: النجف

الصفحات الاولى:

المستخلص: اجريت الدراسة الحالية لغرض التحري عن وجود الجينات الكروموسومية المسؤولة عن بعض عوامل الضراوة المهمة لجنس Pseudomonas aeruginosa كانتاجها للسم الخارجي A والالجنيت اضافة الى الجينات الكروموسومية المسببة لمقاومة الكوينولونات في العزلات السريرية والبيئية لبكت | This study include investigate the presence of chromosomal quinolone resistance genes and virulence genes(toxA and algD) in clinical and environmental isolates from Al - Sadr Medical city.A total of 110 samples were collected from different clinical sources(burns, wounds, and urine), and 50 from the hospital environment.the samples were collected during 10, Oct, 2012 to 2, Feb, 2013. A total number of Pseudomonas aeruginosa isolates accounted for 89 of 160 samples.The distribution of these isolates were 28 from Burns, 14 wounds, 15 urine, and 32 from hospital environments. Identification of isolates has been accomplished depending on phenotypic diagnostic methods and PCR technique.our study proved that PCR technique depending on oprI and oprL genes was a rapid method for identification of non - pigmented isolates. A total of 20 antibiotics resistant isolates were chosen for Molecular studies. The result reveling that 100% of isolates had a chromosomal mutation in the QRDRs of genes (gyrA, gyrB, parC, and parE). High percentage of isolates(45%) carried mutated genes gyrA and parC, followed by 15% of isolates were carried either mutated gene gyrA alone or three mutated genes gyrA, parC, and parE and and 10%of isolates were carried three muted genes gyrA, gyrB, and parC, while gene that encoding to parC mutation were detected in 5% of isolates. Our study is the first study about detection of Quinolone Resistance Determining Regions in P.aeruginosa in Iraq. The results showed the the presence of mexAB - oprM multidrugs efflux system expression in 100%(20) isolates. while the phenotypic test depending on MIC values for ciprofloxacin alone in the presence of efflux inhibitor showed that only 15%(3) isolates had the active efflux pump.

تقييم مستوى بعض الحركيات الخلوية لدى المرضــى المصابين بفايروس الحلا البسيط النمط الاول Herpes simplex virus - 1 == Evaluation of The Level of Some Cytokines In Patients With Herpes Simplex Virus Type I (HSV - 1)

اسم المؤلف: حسين علي كاظم

اسم المشرف: سهام جاسم الكعبي

الموضوع العام: علوم الحياة

السنة: 2013

الموضوع الدقيق: الاحياء المجهرية

الدرجة: ماجستير

الجامعة: جامعة الكوفة - كلية التربية للبنات - قسم علوم الحياة

اللغة: العربية

مكان الجامعة: النجف

الصفحات الاولى:

المستخلص: هدفت الدراسة الحالية الى تسليط الضوء على مجموعة من المرضى المصابين بفايروس الحلا البسيط النمط الاول Herpes simplex virus - 1(HSV - 1) من خلال تقييم مستوى نوعين من الحركيات الخلوية الموجودة في مصولهم. شملت هذه الحركيات الخلوية الانترلوكين Interleukin - 6(I | The present study aimed to highlight a group of patients infected with herpes simplex virus type I (HSV - 1) by evaluating levels of two types cytokines in sera. These included cytokines interleukin - 6 (IL - 6) and tumor necrosis factor - alpha (TNF - ?) has been evaluated using the technique of Enzyme - linked immunosorbent Assay (ELISA), has also been investigating the relationship between these cytokines and the stages of infection compared to the control group. Before that rapid cytologic method has been used to diagnose the virus by detecting the presence of multinucleated giant cells, and then was diagnosed serologically by specific IgM and IgG monoclonal antibodies against Herpes simplex virus - 1. It was also used Radial immunodiffusion method to evaluate levels of total IgM and IgG in patients sera.Sixty four sera samples were collected from patients who are attending to the consultants clinics of Al - Hakeem general hospital and AL - Sader teaching hospital in AL - Najaf AL - Ashraf governorate for the period from October 21/2012 until March 13/2013. These Samples were divided into two groups : (32) sample during primary and recurrent infection, (32) after recovery from infection (latent stage), as well as (16) sample were collected from healthy individuals, who were regarded as acontrol groups.The study reached to the following results : • A significant increment (p<0.05) in sera concentrations of IL - 6 in patients during infection as compared with control groups, but the increment was not significant in sera of patients during latent stage.• TNF - ? levels increased in sera of patient, but this increment was not significant as compared with controls group.• There was no significant increase of Total IgM levels in sera of patients.• Total IgG levels increased significantly in sera of patients during infection and latent stage as compared with control group.• A highly significant positive correlation (r= 0.7, p= 0.00) between TNF - ? and IL - 6 concentration in sera of patients.• There was no significant correlation (p>0.05) between Total IgM levels and (IL - 6 and TNF - ?) in sera of patients with correlation coefficient (r= 0.1, r=0.2) respectively.• Positive significant correlation (r= 0.4, p= 0.02) was found between total IgG levels and IL - 6 in patients during infection, but was no correlation between them in latent stage.• There was no association between age and IL - 6 and TNF - ? levels in sera of patients with HSV - 1.Finally, the elevation of TNF - ? and IL - 6 levels in sera of infected patients with HSV - 1 may be play an important role in pathogenicity of virus, as well as it may limits the viral infection.Furthermore, there are positive correlation between levels of TNF - ? and IL - 6 in sera of patients

دراسة جزيئية للـ Bacteriocine المنتج من قبل بكتريا lactobacillus salivarius == Molecular Study of Bacteriocine Produce By Lactobacillus Salivarius

اسم المؤلف: ايمان حمزة محمد

اسم المشرف: احلام نعيم كاظم الياسين

الموضوع العام: علوم الحياة

السنة: 2013

الموضوع الدقيق: الاحياء المجهرية

الدرجة: ماجستير

الجامعة: جامعة الكوفة - كلية التربية للبنات - قسم علوم الحياة

اللغة: العربية

مكان الجامعة: النجف

الصفحات الاولى:

المستخلص: هدفت الدراسة الحالية التحري عن قابلية عزلات بكتريا Lactobacillus salivarius على انتاج البكتريوسين ودوره في تثبيط فعالية بعض العزلات البكتيرية السالبة لصبغة غرام. جمعت 155 عينة من مصادر سريرية مختلفة شملت 20عينة مسحات مهبلية، 8 عينة مسحات اللعاب، 6عينة حل | The aime of study detecting the a bility of Lactobacillus salivarius to produce bacteriocin and determine it’s role in inhibition the activity of some Gram negative bacteria. Atotal of 155 sample from different clinical source has been collected during the period from October - 2012 to March - 2013, these include 20 samples from vaginal smear, 8 samples from saliva and 6 samples from human milk.The results of primary isolation, Laboratory diagnosis and biochemical test showed that 34 isolates has bee identified as L.salivarius.Ahigh precent of isolation has been carried out from human milk which was 40%. The ability of all isolates to produce gelatinase and biofilm has been detected and the results revealed the ability of some isolates to produce gelatinase and biofilm. Ahigh percent of gelatinase production has been detected in L.salivarius isolated from milk sample (50%), while alow percent of gelatinase production was 0% in L.salivarius isolated from saliva. The results of optical density of biofilm produced by L.salivarius isolates from milk which was 100% higher than it in isolates from vaginal and saliva which was 85% and 75% respectively. All isolates shows antibacterial effect against some Gram negative bacteria, the diameter of inhibition as between (2 - 8), the results showed the ability of 4 selective isolates of L.salivarius to produce bacteriocin in which the Rf valve of precipitate bacteriocin was (0.42 - 0.6) compard with leaky bacteriocin hich was (0.57 - 0.8), also leaky bacteriocin as more activity against G - ve bacteria than precipitate bacteriocin. The result of plasmid profile in L.salivarius revealed the presence of megaplasmid in all isolate except one which had one megaplasmid and one small plasmid. Bacterial conjugation between L.salivarius that produce bacteriocin and had megaplasmid which used as adonor cell with E. coli Jm 109 as a recipient cell showed transferring of megaplasmid from donor to recipient cell and the transconjugant cells showed high anti - bacterial effect due to bacteriocin production against G - ve bacteria. The result of amplification of Sal P gene encoding salivracin P by PCR confirmed that all isolate had no Sal P gene in there genetic materials which revealed that these isolates had another type of bacteriocin rather than Salivracin P.