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Self renewal and apoptosis of haemopoietic stem cells (HSC) represent major factors that determine the size of the haemopoietic cell mass. Changes in self renewal above or below the steady state value of 0.5 will result in either bone marrow expansion or aplasia, respectively. Despite the growing body of research that describes the potential role of HSC,(More)
  • S Ahmad
  • 2012
Antibiotic resistance of urinary tract pathogens has increased worldwide. The purpose of this study is to provide information regarding the causative agents of urinary tract infection in Kashmiri patients, identify the uropathogens responsible for the infection and study the antibiotic susceptibility patterns of the uropathogens. Clean voided mid-stream(More)
The aim of this descriptive study was to determine the prevalence of Klebsiella pneumoniae from different clinical specimens, their antibiotic susceptibility pattern and the extended-spectrum beta-lactamase (ESBL) production among such isolates at Armed Forces Hospital, Al-Kharaj, Saudi Arabia, from November, 2004 to October, 2007. A total of 328 isolates(More)
Methicillin-resistant Staphylococcus aureus (MRSA) is well recognized as a major cause of nosocomial infections worldwide and is associated with high morbidity and mortality rates with rapid development of resistance. MRSA has become established outside the hospital environment and is now appearing in community populations without identifiable risk factors.(More)
PURPOSE To characterize clinical isolates of Klebsiella pneumoniae by phenotypic and genotypic methods. MATERIAL/METHODS Over a 12-month period, 52 isolates of K. pneumoniae were isolated. Of these 52 isolates, 7 were isolated over a period of 21 days from a suspected outbreak in the Neonatal Intensive Care Unit (NICU) and 45 from sporadic cases occurring(More)
  • S Ahmad
  • 1998
Moraxella (Branhamella) catarrhalis is now considered as one of the most important causative organisms responsible for respiratory tract infection. Specimens of tracheal aspirates from inpatients at King Fahd specialist hospital, Buraidah, Saudi Arabia were collected over a period of 18 months to determine prospectively the frequency of Moraxella(More)
Apoptosis plays a central role in the pathogenesis of a number of human diseases. Because apoptosis represents a fundamental process in the response to such infections, it may represent a therapeutic target for their treatment. There is thus likely to be future clinical relevance in harnessing our growing knowledge both of apoptotic mechanisms, and their(More)
BACKGROUND AND OBJECTIVES Salmonella Worthington has been known to be a causative agent for childhood diarrhoea. There is a paucity of information on the molecular relatedness of the strains isolated in various hospitals in India. The present study was carried out to attempt molecular typing of a cluster of Salmonella Worthington isolates obtained from(More)
  • S Ahmad
  • 2013
Cefoxitin is a more potent inducer of the mecA regulatory system compared to oxacillin in Staphylococcus aureus. It has been recommended for the detection of methicillin-resistant Staphylococcus aureus (MRSA) when using disk-diffusion testing. The aim of this study is to compare the results of cefoxitin and oxacillin disk-diffusion methods against the(More)
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