PubMed Health⌕ Search

Biomedical subjects

S Marwah

Publications and source records attributed to S Marwah.

At least 19 recordsLinked to original sources
PubMed2006

A sample distribution programme for erythropoietin.

A survey was sent to laboratories participating in the United Kingdom External Quality Assessment Service (UKNEQAS) Haematinics Scheme about the measurement of serum erythropoietin (EPO). Six laboratories, from a total of 120 that returned the survey, were measuring serum EPO concentrations by commercially available immunoassays on site in the United Kingdom. The workload of the laboratories varied from up to 100 specimens per month to more than 100 specimens analysed per week. All laboratories included control material in the assays and none of the laboratories was participating in an external quality assessment scheme for serum EPO. Four laboratories agreed to take part in the first sample distribution programme, with five and six laboratories participating in distributions 2 and 3 respectively. The results from eight kits were compared from the three distributions over a 2-year period. The serum EPO concentrations for the methods showed some variation across the range of 2.9-200 U/l when the serum EPO concentrations for each method were compared with the whole method mean. The results from this scheme have identified a role for an external quality assessment scheme for serum EPO measurements.

Benchmarking↗
PubMed2000

Extra-hepatic biliary-ductal necrosis in acute pancreatitis: a rare complication.

An 8-year-old male presented with an acute abdomen. Exploration revealed bilious ascites, oedematous pancreatitis with areas of necrosis, and omentum showing patches of fat necrosis. The common bile duct and almost all of the common hepatic duct were gangrenous and had sloughed, with bile leaking from the junctional stump of the right and left hepatic ducts. The patient was managed successfully by Roux-en-Y hepaticojejunostomy. This is a rare case showing necrosis and sloughing of the extrahepatic bile ducts in acute pancreatitis.

Acute Disease↗
PubMed2000

An unusual case of choriocarcinoma following live term pregnancy.

Post-term choriocarcinoma is an infrequent event with poor prognosis. The diagnosis is usually delayed due to failure to recognise the mode of presentation of this disease. Being a rare occurrence, limited data is available regarding its clinical features. The choriocarcinoma in our patient presented as an isolated huge pedunculated growth over the uterine serosa without intrauterine involvement and distant metastasis.

Adult↗
PubMed1997

Inter-relationship of zinc levels in serum and semen in oligospermic infertile patients and fertile males.

Infertility is a problem affecting 10-12% of couples. Zinc is necessary for growth, sexual maturation and reproduction. Semen analysis is helpful in ascertaining the evidence of spermatogenesis, sperm transport, sperm quantity and quality and also provides clue to the functioning of the accessory glands i.e. seminal vesicles and prostate. The present study was conducted in 50 oligospermic infertile males and control group consisting of 25 normospermic known fertile males. Semen and Serum samples were obtained from each case in study as well as control group. Semen and serum were processed by wet ash method. The seminal and serum zinc levels of each case in study and control group were estimated. Statistically, serum zinc and semen zinc levels were significantly lower in infertile patients than fertile males. A significant correlation was observed between serum and semen zinc levels in study group.

Adult↗
PubMed1995

Stimulation of synaptosomal free radical production by fatty acids: relation to esterification and to degree of unsaturation.

The ability of three fatty acids and their respective ethyl esters, to promote generation of reactive oxygen species (ROS), was compared in a preparation of rat brain synaptosomes. Arachidonic but not palmitic or linoleic acids promoted ROS generation. Ethyl esterification of each fatty acid significantly enhanced ROS production and also levels of lipid peroxidaton. Pro-oxidant activity was enhanced by fatty acids, proportionally to their degree of unsaturation. Since ethanol consumption is known to lead to esterification of membrane lipids, this transformation may in part account for the ROS-promoting potential of alcohol.

Analysis of Variance↗
PubMed1994

The scud missile disaster in Al-Khobar, Saudi Arabia, 1991: the orthopaedic experience.

The orthopaedic experience of the scud missile disaster in Al-Khobar, Saudi Arabia during the Gulf war is reviewed. This was by far the most severe of 70 scud attacks. The majority of casualties had 'orthopaedic' injuries, fractures and soft tissue lacerations of the extremities and the back. Our experience confirmed the importance of the principles of planning triage beforehand and open wound treatment with secondary suture. Repeated ward rounds with reassessment of the patients proved beneficial. The ready availability of hospital beds in high-risk situations of regional war highly facilitated the management of mass casualties.

Adult↗
PubMed1993

Shigella osteomyelitis in a fit young man.

A case of shigella osteomyelitis in an apparently healthy young man is presented. Pre-operative and intra-operative swabs taken from the septic focus grew Shigella flexneri. Patient was successfully treated with surgery and a course of Ampicillin.

Adult↗
PubMed1991

The skeletal manifestations of brucellosis.

A prospective study of 33 patients with skeletal complications of brucellosis is reported. The diagnosis depends on the brucellar agglutination titre because the clinical, radiological and histological features are not specific, and blood culture and culture of synovial fluid are often negative. The commonest site is the sacroiliac joint, and brucellosis must be differentiated from tuberculosis as an important cause of backache. Treatment is with chemotherapy, the preferred combination being rifampicin and co-trimoxazole. Relapse can occur, but the chances can be reduced by careful clinical monitoring, and by repeated serological tests and gallium scanning; it is treated by further chemotherapy. Operation is indicated to relieve spinal cord compression or to drain a large paravertebral abscess.

Adolescent↗
PubMed1988

Carbon fibre reinforced epoxy implants for bridging large osteoperiosteal gaps.

An experimental study was undertaken to evaluate the suitability or otherwise of carbon fibre reinforced epoxy (CFRE) implants for bridging large osteoperiosteal gaps, devoid of periosteum. Using the basic principles of composite mechanics and simple design criteria, CFRE implants were designed and developed. These implants were put in simulated osteoperiosteal gaps in the ulna of healthy mature rabbits. Ten wk postoperative results clearly demonstrated that implants made of CFRE induced callus bone formation (in the form of woven bone) which totally encapsulated the implant thereby providing reunion of the two bone segments. Further follow-up showed formation of lamellar bones and formation in the pores of the implant. Radiological and scanning electron microscopical evidence is presented.

Animals↗