Background Tranexamic acid is a synthetic lysine derivate that exerts its antifibrinolytic effect by reversible blocking lysine binding sites on plasminogen preventing fibrin degradation. It is widely used for haemorrhage or risk of haemorrhage in increased fibrinolysis or fibrinogenolysis. Aim The aim of our work was to review the literature regarding the best evidence on tranexamic adverse reactions and to describe them according to the apparatus involved. Methods The literature was searched for publications on tranexamic acid adverse reactions, adverse events, using MEDLINE, Scopus, Embase, Web of Science and Google Scholar. Results In the light of the results, seems to be clear that tranexamic acid causes several adverse reactions involving different apparatus. Hypersensitivity reactions, cerebrovascular infarction, myocardial infarction and pulmonary embolism seem to be the more common tranexamic acid adverse reactions. Conclusion Despite the wide use of tranexamic acid the number of cases reported for type of reaction is relatively low, thus causing a not easy understanding of mechanisms underlying the adverse reaction. Therefore, it would be appropriate to conduct epidemiological studies on a large scale in order to better understand risk factors favoring tranexamic acid adverse reactions and encourage pharmacovigilance in medical practice.
Varicocele is one of the main causes of infertility in men. Oxidative stress and consequently apoptosis activation contribute to varicocele pathogenesis, worsening its prognosis. Natural products, such as lycopene, showed antioxidant and anti-inflammatory effects in several experimental models, also in testes. In this study we investigated lycopene effects in an experimental model of varicocele. Male rats (n = 14) underwent sham operations and were administered with vehicle (n = 7) or with lycopene (n = 7; 1 mg/kg i.p., daily). Another group of animals (n = 14) underwent surgical varicocele. After 28 days, the sham and 7 varicocele animals were euthanized, and both operated and contralateral testes were weighted and processed. The remaining rats were treated with lycopene (1 mg/kg i.p., daily) for 30 days. Varicocele rats showed reduced testosterone levels, testes weight, Bcl-2 mRNA expression, changes in testes structure and increased malondialdehyde levels and BAX gene expression. TUNEL (Terminal Deoxynucleotidyl Transferase dUTP Nick End Labeling) assay showed an increased number of apoptotic cells. Treatment with lycopene significantly increased testosterone levels, testes weight, and Bcl-2 mRNA expression, improved tubular structure and decreased malondialdehyde levels, BAX mRNA expression and TUNEL-positive cells. The present results show that lycopene exerts beneficial effects in testes, and suggest that supplementation with the tomato-derived carotenoid might be considered a novel nutraceutical strategy for the treatment of varicocele and male infertility.
35 dialysis patients underwent anti-HBV vaccination. We classified patients in responders or non-responders using an anti-HBs titer of 50 UI/l as the discriminating serum level and tried to assess whether the antibody response bears any relationship with the nutritional status. 26 patients (74%) reached the target atb titer, which was maintained during follow-up (average 360 UI/l). The weak response in the other 9, with values never exceeding 20 UI/l, was short-lived. Anthropometric and impedenziometric parameters were higher in responders than in nonresponders, but the difference did not reach statistical significance. We conclude that the atb titer which discriminates uremics in responders or not must be > 50 UI/l and that the nutritional status may interfere with the seroconversion rate, but this conclusion needs to be validated in a wider population.
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