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Biomedical subjects

G R Scott

Publications and source records attributed to G R Scott.

At least 55 records · Page 3Linked to original sources
PubMed1991

Rape and sexually transmitted diseases: patterns of referral and incidence in a department of genitourinary medicine.

A retrospective study was carried out of all women attending a Department of Genitourinary Medicine over a 3-year period. Note was taken of referring source, presenting symptoms, infection detected at STD screening and follow-up attendance. Comparison was also made between the number of women referred by the police surgeon and the number who actually attended. We observed an overall incidence of STD of 35% and noted that many infections had a similar prevalence to that of our normal clinic population over the same time period. Only 13% of the women referred by the police attended although after the initial visit attendance was similar regardless of referral source. A number of asymptomatic women were noted to have infection with Neisseria gonorrhoeae and Chlamydia trachomatis. Although, the risk of significant STD following sexual assault is low greater efforts should be made to encourage women to attend for screening whether or not they are symptomatic.

Adolescent↗
PubMed1990

A quantitative enzyme-linked immunosorbent assay for bovine herpesvirus type 1 (BHV-1) antibody.

A quantitative enzyme-linked immunosorbent assay (ELISA) was developed to detect and measure antibody to bovine herpesvirus type 1 (BHV-1) in cattle sera. The optical density produced from a single dilution of test serum was compared with a standard curve and the results were read and printed out from a computer interfaced to a multichannel ELISA reader. The printed results were expressed in ELISA units. The ELISA results obtained on 370 cattle sera were compared with those of the serum neutralisation test (SNT). An agreement of 90.5% was obtained when reciprocal SNT titres equal to or greater than 4 and IgG ELISA units equal to or greater than 50 were taken as indicative of a specific reaction. Of the 370 sera, 35 gave discrepant results of which 21 were SNT positive/IgG ELISA negative and 14 were SNT negative/IgG ELISA positive. When the SNT positive sera negative in the IgG ELISA were tested in an IgM ELISA, 19 were found to be positive. Thus, when the IgG and IgM ELISA results were combined the overall agreement between the ELISA and SNT increased to 95.7%. The IgG ELISA had a sensitivity of 82.4% and specificity of 94.4% relative to the SNT, whereas the combined IgG and IgM ELISA results gave a sensitivity and specificity of 98.3% and 94.4% respectively. There was a good positive correlation between the two tests (r = 0.86).

Animals↗
PubMed1990

An overview of the FDA publication Approved Drug Products with Therapeutic Equivalence Evaluations.

The history, purpose, and content of FDA's Approved Drug Products with Therapeutic Equivalence Evaluations (the "Orange Book") are described. When cost guidelines established in the 1970s for Medicare reimbursement prompted most states to permit generic drug product selection, an official list of interchangeable drug products was needed. Regulations for determining bioavailability and bioequivalence were published in 1977, and FDA first published Approved Drug Products in 1980. The Orange Book includes products that have been fully reviewed by FDA for both safety and effectiveness and for which new drug applications (NDAs) or abbreviated new drug applications (ANDAs) and special applications (From 5s or 6s) for antibiotics have been approved. Pursuant to the 1984 Drug Price Competition and Patent Term Restoration Act, FDA added approved nonprescription products to the Orange Book along with information about patents and periods of marketing exclusivity. Orphan drug products and certain testing and application procedures are also provided. Equivalence evaluations are provided in the Orange Book only for multisource prescription drug products that contain the same active ingredients and can be expected to have the same clinical effect when administered to patients under the conditions specified in the labeling. A coding system is used to indicate the products' equivalence evaluations according to FDA criteria, and indexes by product name and manufacturer are included. Monthly Cumulative Supplements are issued. The Orange Book contains public information and advice, but it is not an official national compendium; FDA has no position on state regulation of drug product selection by pharmacists. The equivalence evaluations do not relieve practitioners from exercising care in prescribing and dispensing products according to patients' individual needs.

Drug Information Services↗
PubMed1989

Preliminary observations on rinderpest in pregnant cattle.

A Kabete 'O' strain of rinderpest virus enhanced in virulence was inoculated subcutaneously into four cows which were between six and eight months pregnant. All the cows developed clinical signs of rinderpest from the third day after inoculation and shed high titres of virus in their ocular and vaginal secretions during the course of the clinical disease. Three of the cows died of rinderpest on the third day after the onset of fever but no virus was isolated from their fetuses which were examined post mortem. The fourth cow showed complete clinical and virological recovery by the eighth day after the onset of fever and aborted an eight-and-a-half-month-old fetus on the 12th day after it recovered. Rinderpest virus was demonstrated in a wide range of the aborted fetal tissues. Virus was also detected in the maternal vaginal discharges up to 24 hours after abortion. The only gross pathological change observed was a severe necrotising placentitis.

Animals↗
PubMed1989

Infection with Chlamydia trachomatis and Neisseria gonorrhoeae in women with lower abdominal pain admitted to a gynaecology unit.

One hundred and sixty-five women admitted to a gynaecology unit with lower abdominal pain were screened for infection with Neisseria gonorrhoeae and Chlamydia trachomatis by members of a department of genitourinary medicine. C. trachomatis alone was detected in 21 patients. N. gonorrhoeae alone was isolated from five patients, and dual infection was present in six patients, giving a total of 32 (19%) patients in whom a sexually transmitted disease (STD) was diagnosed. The combination of an endocervical swab placed in Amies transport medium for gonococcal isolation and an endocervical slide for immunofluorescent detection of chlamydiae proved to be a simple and accurate method of screening for STD. As a result of contact tracing, 16 sexual partners of women in whom STD was detected were examined. Three cases of gonococcal and nine cases of non-gonococcal urethritis were diagnosed. None of the sexual partners had symptoms suggestive of genitourinary infection.

Abdomen↗
PubMed1987

Ciprofloxacin versus ampicillin and probenecid in the treatment of uncomplicated gonorrhoea in men.

Eighty-six men with uncomplicated gonorrhoea were entered into a study comparing the efficacy of a single oral dose of 250 mg of ciprofloxacin with a single oral dose of ampicillin 2 g and probenecid 1 g for urethral gonorrhoea and a course of ampicillin, 500 mg four times per day for five days in rectal and pharyngeal infection. Two patients were excluded. Of the remaining 84, 45 were treated with ampicillin and 39 with ciprofloxacin. In the ampicillin group there were two treatment failures out of 40 urethral infections. Three patients with rectal infection were cured. Only one patient out of three pharyngeal infections was cured. Ciprofloxacin cured all of 34 urethral and three rectal infections including one penicillinase producing strain of Neisseria gonorrhoeae (PPNG). Four of five pharyngeal infections were cured but there was one treatment failure. There were no major side effects in either treatment group. In conclusion, a single oral dose of 250 mg of ciprofloxacin is an effective treatment for uncomplicated gonorrhoea in men.

Ampicillin↗
PubMed1987

The taxonomic status of the causative agent of heartwater.

A fresh pragmatic classification of the rickettsias has been derived by applying the simplest techniques of numerical taxonomy. One order, the Rickettsiales, containing 3 families, the Rickettsiaceae, Phagosomaphilaceae, and the Bartonellaceae (?) is proposed. Cowdria is classified as a genus along with Chlamydia, Coxiella and Anaplasma in the tribe Chlamydieae in the family Phagosomaphilaceae.

Animals↗
PubMed1987

The effects of Eperythrozoon ovis in sheep.

Infection of adult sheep with a single strain of Eperythrozoon ovis led to three different situations. First, the animal resisted the organism and no haematological changes occurred. Second, the host developed a controllable parasitaemia in which erythrocyte values fell shortly after peak parasitaemia and then returned to normal. Third, the host failed to control the parasitaemia and chronic low grade anaemia developed. Dexamethasone sometimes caused a resurgence of parasitaemia in sheep.

Anaplasmataceae Infections↗
PubMed1987

Changing morphology of Eperythrozoon ovis.

Light microscopy studies of Eperythrozoon ovis in sheep revealed that Giemsa stain was only less reliable than acridine orange as a means of parasite identification when low parasitaemias were present. The morphology of E ovis altered as the degree of parasitaemia increased.

Acridine Orange↗
PubMed1986

Retroperitoneal approach to high-risk abdominal aortic aneurysms.

During a 14-month period we used a left-flank, retroperitoneal, retrorenal approach in 23 high-risk patients with abdominal aortic aneurysm (AAA). Fourteen patients underwent suprarenal/celiac cross clamp for juxtarenal/suprarenal AAA and/or associated occlusive disease. Other indications for this approach included diminished cardiac and/or pulmonary reserve, previous extensive abdominal surgery, obesity, and inflammatory AAA. There was only one death (4%) in this high-risk group and minimal operative morbidity. The flexibility afforded by this approach for high aortic exposure allowed expeditious proximal anastomoses with minimal postoperative renal dysfunction. Pulmonary complications, ileus, and pain were reduced and patient mobilization was rapid despite the complex nature of the operative procedures. We believe that this approach offers significant advantages for all cases of AAA but particularly for anatomically complex lesions and medically high-risk patients.

Aged↗
PubMed1986

A technique to obviate the risk of inadvertent infection of cell cultures with bovine viral diarrhoea virus.

When bovine embryonic kidneys collected at the Gorgie Abattoir, Edinburgh were examined for evidence of infection with bovine viral diarrhoea virus (BVDV), 11 out of 26 kidneys were found to be positive. A technique that detected the presence of inadvertent BVDV in cell cultures consisted of processing and digesting the kidneys to produce cell suspensions, adding dimethyl sulphoxide and dispersing the suspensions in small aliquots that were stored frozen at - 114 degrees C. One aliquot was cultured and screened for BVDV by indirect immuno-fluorescence and interference tests. Bovine embryonic kidney cells so processed retained their viability and virus susceptibility for 15 to 18 months. Selected stocks of "clean" cells only are then used for vaccine production or diagnostic purposes. The cytopathic NADL strain of BVDV multiplied in naturally infected cell cultures but the titres attained were significantly lower than in "clean" cell cultures.

Animals↗
PubMed1984

Graves' disease and atrial fibrillation: the case for even higher doses of therapeutic iodine-131.

Seventy five consecutive patients with Graves' disease complicated by atrial fibrillation were given a large single therapeutic dose of 600 MBq (16.2 mCi) iodine-131 in an effort to control their hyperthyroidism rapidly and thus restore sinus rhythm. Patients were initially followed up every three months after treatment and then at yearly intervals. The mean period of follow up was 3.1 years. A total of 44 of the patients became hypothyroid and 31 euthyroid, and 33 (75%) and 14 (45%) of these patients, respectively, reverted to sinus rhythm (p less than 0.01). Of the 33 who became hypothyroid and reverted to sinus rhythm, 30 had developed the hypothyroidism within six months after treatment. These results are a strong case for increasing the dose of radioiodine in patients with Graves' disease complicated by atrial fibrillation in an effort to speed the onset of thyroid failure and thus maximise the rate of reversion to sinus rhythm.

Adult↗