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Biomedical subjects

M A Sattar

Publications and source records attributed to M A Sattar.

50 records · Page 3Linked to original sources
PubMed1983

The penetration of trimethoprim and sulphamethoxazole into synovial fluid.

A group of six patients with non-infected synovial effusions requiring diagnostic or therapeutic aspiration, were given a short oral course of 'Septrin' (two tablets bd for two doses, each tablet containing 80 mg of trimethoprim plus 400 mg of sulphamethoxazole). Serum and synovial fluid (SF) were sampled frequently following antibiotic administration. It was found that concentrations of trimethoprim in SF approached serum levels after a short lag time (about 3 h) and thereafter approximated to the serum levels, whereas sulphamethoxazole did not as readily penetrate into SF. With the regimens used MIC levels for trimethoprim were achieved in SF, which suggests that this drug could be usefully prescribed in normal doses for the treatment of septic arthritis due to bacterial infection.

Adult↗
PubMed1983

Concentrations of some antibiotics in synovial fluid after oral administration, with special reference to antistaphylococcal activity.

One of 4 antibiotics with antistaphylococcal activity was given in a conventional oral dose for one day to each of 20 hospitalised patients with synovial effusion of a knee joint requiring aspiration. Serial synchronous samples of serum and synovial fluid (SF) were taken over 36 hours through indwelling cannulae. No morbidity was experienced either during or after this procedure. Satisfactory antistaphylococcal concentrations in SF were achieved with sodium fusidate (500 mg 8 hourly) and amoxycillin (250 mg 8 hourly). Cephradine (500 mg 6 hourly) frequently failed to reach the minimum inhibitory concentration for Staphylococcus aureus in the SF, and flucloxacillin (250 mg 6 hourly) was unpredictable in its penetration of the synovial space. Wide interpatient variation of both serum and SF concentrations was found. Our results indicate that sodium fusidate is an appropriate early treatment for a nonresistant staphylococcal joint infection. Amoxycillin is a suitable alternative or second antistaphylococcal drug and would also be appropriate initial therapy when the infecting organism is unknown. We strongly recommend that SF antibiotic concentrations be measured, to ensure adequate penetration of the synovial cavity, in the treatment of septic arthritis.

Adult↗
PubMed1983

Steroid responsiveness in connective tissue diseases.

Thirty-four patients with connective tissue disease used dexamethasone drops 0.1% in one eye for 6 weeks. There was a higher incidence of positive steroid response than would be expected in a normal population. Most of the male patients were responders. Care should be exercised when prescribing local steroids for these patients. Males should be offered regular screening for glaucoma.

Adult↗
PubMed1982

Arthritis associated with hairy cell leukaemia.

We report the case of a 65-year-old patient with a 15-year history of intermittent asymmetrical oligoarthritis, who subsequently developed splenomegaly, lymphadenopathy, and episodic leucopenia and thrombocytopaenia. Investigations revealed hairy cell leukaemia, and 'hairy cells' were detected in the synovial fluid. No other cause for this arthritis was found, and we consider the blood dyscrasia to be the likely cause. This case demonstrates a hitherto unreported association between arthritis and hairy cell leukaemia.

Aged↗
PubMed1982

The penetration of metronidazole into synovial fluid.

Six patients with non-infected synovial effusions, associated either with inflammatory or degenerative arthropathy and requiring diagnostic or therapeutic aspiration, were given a short course of 400 mg metronidazole (Flagyl) 8-hourly for 3 doses. Serum and synovial fluid (SF) were sampled frequently during this time, and assayed for metronidazole by a specific high pressure liquid-chromatographic method. It was found that concentrations of metronidazole in SF reached those in serum after a short time-lag, and thereafter approximated to the serum concentration. With this regimen, metronidazole concentrations were readily achieved in synovial fluid, above the minimum inhibitory concentrations for most susceptible anaerobes. These results indicate that the drug freely enters the synovial fluid and suggests that metronidazole would prove effective in the treatment of septic arthritis due to anaerobic bacteria.

Administration, Oral↗
PubMed1980

Microbiological surveillance of intra-neighbourhood E1 Tor cholera transmission in rural Bangladesh.

The apparent failure of handpump tubewells to reduce the incidence of cholera among users in the flooded rural area of Bangladesh has stimulated interest in defining precisely the means of Vibrio cholerae transmission during localized outbreaks. Cholera-infected neighbourhoods were placed under intensive microbiological surveillance to pinpoint contaminated sources and subsequent infections. The results show that cholera transmission was via contaminated surface water, particularly water taken into households for cooking or drinking. Infections resulted from a daily dose not exceeding 10(5) organisms and the frequency of exposure appeared to be a major determinant of the infection rate. The importance of these data in environmental interventions and particularly in the provision of tubewells is discussed.

Bangladesh↗
PubMed1977

Thin-layer chromatography of chlorinated catechols.

The thin-layer chromatography of catechol and six chlorinated catechols has been studied on five adsorbents. Acetic acid in the developing solvent was essential for the production of sharp zones. The best separation of the individual compounds occurred on alumina, whereas silica gel appeared to be good for group separation (clean-up) from other compounds.

Catechols↗
PubMedDate not supplied

Acute renal failure in 2K2C Goldblatt hypertensive rats during antihypertensive therapy: comparison of an angiotensin AT1 receptor antagonist and clonidine analogues.

1. This study compared the effect of a non-peptide angiotensin II receptor antagonist and a series of clonidine analogues on blood pressure and renal function in a two-kidney two-clip Goldblatt rat model of hypertension subjected to 2 weeks of dietary sodium deprivation. 2. Animals received either vehicle, the angiotensin II antagonist, ZD7155 or structural analogues derived from clonidine (AL-11, AL-12 and CN-10) at 10 mg kg-1 day-1 for 4 days. 3. All groups of rats had systolic blood pressure in the hypertensive range (160-180 mmHg). ZD7155 caused a 33-mmHg fall in blood pressure (P < 0.05) and raised plasma urea and creatinine four- to six-fold. 4. AL-12 decreased blood pressure by 30 mmHg (P < 0.05), but had no effect on water intake, urine flow or plasma urea and creatinine. AL-11 and CN-10 had minimal effects on blood pressure and water intake and while CN-10 decreased urine flow on the third treatment day, AL-11 markedly reduced urine flow by some 70%. 5. These data show that in this sodium deficient renovascular model of hypertension, blockade of angiotensin II receptors normalizes blood pressure but causes renal failure, whereas the vasodepressor action of the clonidine analogue AL-12 occurs without detriment to renal function. These findings imply that angiotensin II receptor antagonists could lead to renal failure if used as antihypertensive agents in renovascular hypertension whereas this would be avoided with the use of clonidine-like analogues.

Acute Kidney Injury↗
PubMedDate not supplied

Scleroedema diabeticorum: a minor but often unrecognized complication of diabetes mellitus.

The association of specific dermatological complications with diabetes mellitus is well recognized. Of 100 hospital-based patients with diabetes mellitus (age 48 years +/- 2SE), 14% had scleroedema diabeticorum. The affected subjects had a higher prevalence of retinopathy (p less than 0.001) and albuminuria (p less than 0.025). The duration of scleroedema correlated with the duration of diabetes (p less than 0.005). These findings highlight the relatively common occurrence of this skin condition which often goes unrecognized in people with diabetes.

Diabetes Complications↗
PubMedDate not supplied

Periarthritis: another duration-related complication of diabetes mellitus.

The association between periarthritis of the shoulder and diabetes mellitus is well recognized. A study of 100 hospitalized patients with diabetes was performed, comparing them with 100 control subjects. The mean +/- SEM age of the subjects was 47 +/- 2 yr. Nineteen percent of the patients with diabetes had periarthritis. The afflicted subjects had a higher incidence of retinopathy (P less than 0.005) and albuminuria (P less than 0.005). The duration of shoulder pain correlated with the duration of the diabetes mellitus (P less than 0.001). However, the presence of other complications in subjects with periarthritis was not as well correlated with the duration of the diabetes mellitus. These data emphasize the common occurrence of periarthritis in subjects with diabetes mellitus and its extension to people of diverse backgrounds.

Albuminuria↗
PubMedDate not supplied

Histocompatibility antigens (A, B, C, and DR) in Arabs with rheumatoid arthritis.

Eighty-five Arab patients in Kuwait with classical and definite rheumatoid arthritis were typed to examine the frequency of HLA-A, B, C, and DR antigens. The results showed a significant increase in the frequency of HLA-A10, B8, B21, and DR3 antigens when compared to an age- and sex-matched control population. HLA-DR3 was present in 34 per cent of the patients compared with 2 per cent of the controls (p less than 0.001). The association of RA in the Arab population with HLA-DR3 rather than HLA-DR4 or HLA-DR1 as reported in other ethnic groups emphasizes further the complexity of the genetics of RA.

Arthritis, Rheumatoid↗