The effects of barbiturate anesthesia and laparotomy on testis and plasma testosterone in rats.
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Biomedical subjects
Publications and source records attributed to S Lindgren.
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The influence of food intake on the bioavailability of three analgesic compounds--propoxyphene chloride, acetyl salicylic acid and phenazone--in a combination tablet, Doleron, has been examined in eight healthy volunteers. A single oral dose was given both on an empty stomach and together with a standardized breakfast meal. The plasma concentrations of propoxyphene, its major metabolite norpropoxyphene, salicylic acid and phenazone were determined by mass fragmentography, spectrofluorimetry and gas chromatography. Concomitant food intake had no consistent influence on the bioavailability of any of the components. Hence, doleron may be taken together with meals as well as between meals. Large interindividual variations in propoxyphene and phenazone concentrations were found, indicating that an optimal effect will not always be obtained by standard doses.
Two cases with a sarcoid-like disorder apparently restricted to the intracranial optic nerve and the adjacent dura mater are described, doublilng the number of reported cases. In both instances there were unilateral visual loss and unusual radiographic changes in the optic canal area. Biopsy samples showed localised infiltration of tissues with non-caseating tubercles containing epithelioid and multinucleated giant cells.
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A previously described GLC method has been modified and applied to measurement of antipyrine levels in plasma, blood and saliva of man following administration of a single oral dose (10 mg/kg). Tery time studied. The half-life of antipyrine determined in blood, plasma or saliva in any given individual was similar. The intersubject variation in half-life was about two-fold (n = 5). Antipyrine levels in saliva were not affected by the rate of saliva flow when collections were made continuously for 20 minutes. This study has demonstrated that kinetic data about antipyrine comparable to that from plasma may also be obtained from readily accessible tissue fluids, such as saliva and capillary blood.
A patient had a blistering and severely itching disease confined solely to the oral cavity. The histopathologic findings had the features of both pemphigus and dermatitis herpetiformis. There were no gastrointestinal symptoms, no IgA could be found in uninvolved skin, and no intercellular or basement membrane antibodies were present in the serum or epidermis. The disease responded favorable to dapsone (diaminodiphenylsulfone), which could be discontinued after 2 1/2 years. The literature is briefly reviewed, and there is a discussion of whether the patient was suffering from pemphigus or dermatitis herpetiformis. The conclusion is drawn that the diagnosis cannot be established with certainty and that we are perhaps dealing with a new disease. It is stressed that in such aberrant cases a therapeutic trial with dapsone should be made.
Three patients treated daily with vitamin A acid cream experienced after one week, seven weeks and 14 weeks respectively sudden redness and itching at the treated sites. Patch testing with the cream (containing 0.05% vitamin A acid) and with vitamin A acid 0.05% in absolute alcohol produced strongly positive reactions in the patients but only slight erythema in some of the controls. Since patch testing with vitamin A acid 0.005% in absolute alcohol elicited no response in controls but positive reactions in the three patients, it is probable that these latter reactions were due to contact allergy. Histologically the test reaction showed intact epidermis and dense dermal infiltration by mononuclear cells, and thus resembled a response of the tuberculin type.
The granulocytes of a patient with generalized pustular psoriasis (GPP) were found to have impaired ability to fix iodine after ingestion of yeast particles. Since hexose monophosphate shunt (HMS) activity was increased and the contents of 3 other lysosomal enzymes, beta-glucuronidase, N-acetyl-beta-glucosaminidase and lysozyme, were within normal range, the impaired iodination appeared to be due to a selective defect of myeloperoxidase (MPO) activity within the phagocytic cells. The deficient iodination was accompanied by a decreased intracellular killing of E. coli and C. albicans. Since hexose monophosphate shunt activity was enhanced and azide and cyanide inhibited the intracellular killing of E. coli only moderately, the patient's granulocytes may possess azide- and cyanide-resistant, MPO-independant microbicidal systems coupled to the oxidative metabolism. Assessment of granulocyte iodination and enzyme contents of the relatives of the patient revealed no hereditary transmission. Since GPP is characterized by the development of subcorneal pustules containing granulocytes, the MPO-deficiency may be the cause of or enhance the development of the disease.
A patient with a cystic craniopharyngioma below the right optic nerve had several recurrences requiring surgery. Finally the cyst was connected with a subcutaneous reservoir by means of a fine catheter. Symptoms of optic nerve compression recurred more than 50 times during the following year, and were relieved within seconds upon drainage of the reservoir. In each cycle, a drop in visual acuity preceded a measurable change in the visual field. The pattern of field changes was an increasingly severe, uniform depression. Optic nerve ischaemia induced by compression was probably the most important factor causing visual failure in this case.
Generalized pustular psoriasis shows a fluctuating pattern, its course varying with time and from patient to patient. The prognosis and results of treatment are therefore extremely difficult to assess. The patients in this series have been followed up by us with regard to the natural course of the illness including complications and precipitating factors. Oral drug therapy has suprisingly often provoked acute pustular eruptions, and these patients have also strikingly often and rapidly developed contact allergy to topical applications. The undesirable effects of long-term systemic corticosteroid therapy have been confirmed in this series, chiefly by severe rebound phenomena, notwithstanding that such treatment has proved the only means of rapidly reversing life-threatening states. The effects of methotrexate and hydroxyurea were at times good but, not uncommonly, mediocre and occasionally even useless. Large doses of antibiotics have also failed to achieve the results described by others. On the contrary, secondary infection with beta-hemolytic streptococci has caused serious problems in several cases. Apart from careful protection from infection and precipitating factors, little can be done to influence the course of generalized pustular psoriasis, but trial with cytostatics is justified during severe bouts, pending the appearance of new lines of therapy.
The phagocytic activity of polymorphonuclear leukocytes from 10 patients suffering from generalized pustular psoriasis (GPP) has been studied. In all patients intracellular iodination capacity was measured, and 6 were studied regarding hexose monophosphate shunt activity (HMS) and bactericidal capacity. In 2 patients leukocytes from pustules were tested by the iodination reaction. Sera from 7 patients were incubated with normal leukocytes in a bactericidal test to evaluate the opsonizing capacity, which was found to be normal. Leukocytes from patients with GPP after 120 min of incubation with bacteria exhibited significantly impaired lethality compared with the controls, but no significant difference was found after 60 min. Iodination capacity and HMS activity were normal in all patients except in one, who was found to be deficient in myeloperoxidase. The possible significance of the impaired lethability of bacteria in the pathogenesis of GPP is discussed.
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Among 3,271 consecutive cases of gonorrhoea seen during the years 1971 to 1974, the incidence of tonsillar gonorrhoea was 3-6% in men and 5-8% in women. Oro-genital intercourse was admitted by 34% of men and 33% of women. Among these patients the incidence of tonsillar gonorrhoea was 7% in men and 16% in women. Only two cases of gonococcal septicaemia were seen, and there were no other complications. Few patients experienced symptoms from the throat. Tonsillar cultures was positive on the first examination in only 74%, it was negative until after single-dose treatment had been given in 18%.
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