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PubMedDate not supplied

Reduced postprandial hyperglycemia after subcutaneous injection of a somatostatin-analogue (SMS 201-995) in insulin-dependent diabetes mellitus.

The effect of a new octapeptide analogue of somatostatin (SMS 201-995) on blood glucose and gut hormone levels was studied in 10 C-peptide-negative, insulin-dependent diabetic (IDDM) subjects. On separate days, either 50 or 100 micrograms SMS or placebo was s.c. injected simultaneously with an identical insulin dose 30 min before a mixed meal. Postprandial blood glucose decreased after 100 micrograms SMS s.c. within 30 min from 8.9 +/- 0.7 to 7.8 +/- 0.6 mmol/L (P less than 0.001) and remained at similar levels during 180 min. In contrast, postprandial blood glucose concentration increased after placebo from 9.9 +/- 0.8 to 13.8 +/- 0.9 mmol/L (SMS versus placebo P less than 0.001). Plasma glucagon decreased rapidly after SMS to the limit of detection (P less than 0.001) and remained lowered during 180 min; in contrast, glucagon levels increased after the meal during the placebo study (SMS versus placebo P less than 0.001). Plasma growth hormone concentrations were significantly lower after SMS than after placebo (P less than 0.05). SMS abolished completely the postprandial increase in plasma gastrin and pancreatic polypeptide (PP) concentrations. Plasma free fatty acid (FFA) and triglyceride concentrations decreased after SMS, reaching significantly lower levels than after placebo (P less than 0.05 and P less than 0.01), respectively). Plasma SMS concentration increased rapidly after s.c. administration of SMS; its appearance preceded that of plasma free insulin after s.c. insulin injection. Fifty micrograms SMS was similarly effective as 100 micrograms in decreasing blood glucose, triglycerides, glucagon, and gut hormone concentrations.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed2001

Anticoagulant effects of repeated subcutaneous injections of high doses of unfractionated heparin in healthy dogs.

OBJECTIVE: To evaluate s.c. administration of unfractionated heparin (UFH) in accordance with a dosing regimen for high-dose treatment in dogs. ANIMALS: 10 healthy adult Beagles. PROCEDURES: Two groups of dogs (5 dogs/group) were given 6 injections of heparin (500 units of UFH/kg of body weight, s.c.) at intervals of 8 (experiment 1) and 12 (experiment 2) hours. Blood samples were collected before and 4 hours after heparin injections to determine amidolytic heparin activity, activated partial thromboplastin time (APTT), thrombin time, antithrombin activity, platelet count, and Hct. RESULTS: For experiments 1 and 2, mean +/- SD heparin activities before (experiment 1, 1.32 +/- 0.20 U/ml; experiment 2, 0.69 +/- 0.174 U/ml) and 4 hours after the last heparin injection (experiment 1, 1.71 +/- 0.30 U/ml; experiment 2, 1.10 +/- 0.30 U/ml) were higher than values calculated for the regimen used in experiment 1. Results of the investigated thrombin time test system with low thrombin activity were frequently beyond the measurement range, even with UFH activities > or = 0.6 U/ml. Moreover, a severe decrease of antithrombin activity became evident during both experiments (eg, in experiment 2 from 95.6 +/- 4.8 to 59.2 +/- 6.6%). In each treatment group, 2 dogs developed hematomas. CONCLUSIONS AND CLINICAL RELEVANCE: Calculations of the course of heparin activity after a single injection do not result in a reliable dosing regimen for high-dose heparin treatment in dogs. High-dose treatment must be monitored for each dog. Thrombin time measured with low thrombin activity is unsuitable for this purpose.

Animals↗
PubMed1986

Neurobehavioral sequelae of subcutaneous injection with metallic mercury.

A 19 year old, white male, with nine years of education, attempted suicide by injection of metallic mercury (Hg) into the left forearm. CT scan findings suggesting mercury infiltration of the brain and results from urinalysis indicated clinically high levels of Hg excretion. Premorbid cognitive history was essentially normal, yet comprehensive neuropsychological assessment revealed significant impairment of higher cortical functioning beyond those expected of a moderately to severely disturbed psychiatric patient. Neuropsychological test results appear to offer a more sensitive, quantitative assessment of heavy metal toxicity.

Abdomen↗