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Home > Molecular Characterization of Local Human Extraintestinal Escherichia Coli Isolates

Molecular Characterization of Local Human Extraintestinal Escherichia Coli Isolates

Thesis Info

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Author

Bashir, Saira

Program

PhD

Institute

Quaid-I-Azam University

City

Islamabad

Province

Islamabad.

Country

Pakistan

Thesis Completing Year

2010

Thesis Completion Status

Completed

Subject

Natural Sciences

Language

English

Link

http://prr.hec.gov.pk/jspui/handle/123456789/1801

Added

2021-02-17 19:49:13

Modified

2024-03-24 20:25:49

ARI ID

1676726686579

Similar


Extraintestinal pathogenic E.coli are major pathogens responsible for causing urinary tract infections. These are associated with multiple drug resistance (MDR) and high virulence. A triplex PCR was employed to segregate each isolate into different phylogenetic groups. Among fifty nine uropathogenic E.coli isolates majority belonged to phylogenetic group B2 (50%) where as 19% each belonged to groups A and B1, and 12% to group D. Phylogenetic group D isolates were found to be less frequent but harbored multiple drug resistance and virulence related genes to a greater extent. Drug resistance was evaluated by disc diffusion method and relevant drug resistance gene detection. It was found that most effective drugs were gentamicin and amikacin among aminoglycosides; aztreonam, ceftriaxone, cefoperazone and cefixime among β lactams, and ciprofloxacin among quinolones. Streptomycin, trimethoprim-sulfamethoxazole, tetracycline and nalidixic acid were relatively ineffective. Chloramphenicol was found to be very effective for urinary tract infections. Highly prevalent drug resistance gene was mutated gyrA (83%) followed by tem (46%), bltTEM (41%), tetB (34%), catP (31%), and tem β lactamase (15%); blaSHV and tetA were not detected. Among virulence related genes most prevalent was hlyA (37%) followed by sfaDE (27%), papC (24%), cnf1 (20%), eae A (19%) and afaBC3 (14%). Some of isolates were highly hemolytic to human erythrocytes and some were highly cytotoxic to Vero cells. Highly hemolytic isolates mainly belonged to group D, where as highly verotoxic isolates belonged to group B2 followed by group D. It was also noted that in cnf1 negative isolates cytotoxicity was related to papC, sfaDE, afaBC3, eae A and hlyA genes.
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پہلا ستارہ

پہلا ستارہ
آفتاب نواب
کسی بھی فنکار کے فنی سفر کا پہلا قدم اظہار کے میڈیم کی تلاش ہے۔ اس مرحلے کا طے ہونا جز ثابت ذہنی سے تفکر کے ممکن نہیں۔ ڈاکٹر فہد ملک اس مرحلے پر مبارک باد کے مستحق ہیںکہ وہ اپنے اظہار کا ذریعہ تلاش کرنے میں کامیاب ہو چکے ہیں۔ کسی بھی زبان میں شعر اس وقت تخلیق ہوتا ہے جب وہ اتنی طاقت ور ہو چکی ہو کہ اس کے پاس رمز و ایما کے تمام وسائل آچکے ہوں اور آدمی تب شعر کہہ سکتا ہے جب اس کے اندر رمز و ایما سما سکتے ہوں، پک سکتے ہوں اور لفظوں میں ڈھل سکتے ہوں۔ فہد ملک رمز و ایما کی طرف سفر پر نکلے۔ اس کتاب میں آپ کی ملاقات جس فہد ملک سے ہو گی وہ انسان کو سہل نہیں جانتا۔ محبت کو سچے جذبے سے تعبیر کرتا ہے۔ اخلاص و رواداری ،حریت، سماجی جدلیات اور انسان کی باطنی کیفیات پر غور کرتا ہے۔ فنکار اپنی کائنات خود بناتا ہے اور فہد نے اپنے کائنات شعر میں بنانے کا فیصلہ کیا ہے جس کا پہلا ستارہ یہ کتاب ہے۔
اس کتاب میں کرافٹ کی طرف متوجہ ہونے ، فکر کو خاص سطح تک لے جانے کی کاوش کے نقوش ملتے ہیں۔ اس امر کو مدِ نظر رکھتے ہوئے یہ کہا جاسکتا ہے کہ فہد ملک آئندہ وقت کا دل پذیر صاحبِ سخن ہے۔

The Quranic Statements on Blood and Flesh and Medical Science

The Qur’an has mentioned, among so many things, animal blood and flesh. It so appears that all of its statements on these two matters are invariably in agreement with the modern medical science. The Qur’an declares the dead-animal as forbidden for consumption. There are reasons for that. Medical science provides justification for non-consumption of dead animals’ flesh and blood. This article discusses how medical science supports the Qur’anic injunction on animals’ flesh and blood.

Environmental Studies of Different Effects of Lead on Some Physiological and Morphological Features of Diptera Flies

Lead is an important environmental toxic waste which almost contaminate the food, soil, water and air, hence, insects could be influenced easily by the lead. Therefore, lead was studied in the form of lead acetate using different doses. viz 0.125 mg., 0.25 mg., 0.5 mg., 1.0 mg and 2.0 mg, inrespect of its effects on external morphology of Bactrocera dorsalis, Bactrocera zonata, Bactrocera cucurbitae, Drosophila melanogaster and Musca domestica at 48 hours post treatment. It was observed that under the influenced of lead morphological abnormalities were developed in the larvae of flies. Morphological changes were observed as elongated wings, de-shaped wings, elongated and folded legs, change in color of larvae, pupae and adults, several other structural abnormalities of larvae and pupae shape were also observed. It is shown that Dipterous flies could present a useful module for the assessment of lead contamination. The effect of lead acetate on proteins of five species of dipterious flies Bactrocera dorsalis, Bactrocera zonata, Bactrocera cucurbitae, Drosophila melanogaster and Musca domestica were also observed through electrophoresis, while Egg albumin 42.7 kDa was used as a reference protein and various proteins of different weights were found altered.