ВведениеИзвестно, что нейроспецифическая енолаза (NSE) резко повышается в сыворотке крови при повреждении головного мозга и часто выступа-ет в качестве маркера проницаемости гематоэн-цефалического барьера. NSE -фермент, ката-лизирующий превращение 2-фосфоглицерата Адрес для переписки: Зуева Анна Анатольевна, ГОУ ВПО Читинская мед. академия, кафедра патофизиологии 672090, Забайкальский край, г. Чита, ул. Горького, 39а. Тел.: (3022) 32-18-59. Факс: (3022) 32-30-58. E-mail: zuevaa@yandex.ru Tsybikov N.N., Zueva A.A., Zhigzhitova E.B., Prutkina E.V. LeveLs of neurospecific enoLase and enoLase-specific autoantibodies in bLood serum of the patients with autoimmune thyropaties abstract. The patients with autoimmune thyroiditis and various functional states of thyroid gland, and diffuse toxic goiter with pronounced thyrotoxicosis were studied for neurospecific enolase and enolase-specific autoantibodies levels in blood serum. Increased concentrations of neurospecific enolase and specific autoantibodies were revealed in all groups of the patients. A conclusion was drawn that nervous system may be involved into pathological process during development of thyropaties.
Background: Management of diabetes mellitus-induced erectile dysfunction (DMED) is challenging because of its insufficient responses to phosphodiesterase type 5 inhibitors. Aim: To compare the effects of ipidacrine, a reversible cholinesterase inhibitor, and sildenafil on DMED in a rat model of streptozotocin (STZ)-induced diabetes. Methods: Erectile dysfunction (ED) caused by STZ-induced diabetes mellitus was modeled in adult male Wistar rats, which were randomized to 4 groups: untreated diabetic rats, sildenafil (5 mg/kg), ipidacrine (3.6 mg/kg) and ipidacrine (6.7 mg/kg). The test drug (ipidacrine), comparator (sildenafil) or control substance (1% starch solution) were administered orally for 5 days or 14 days. Erectile function was assessed by the change in the maximum intracavernous pressure (ICPmax) following cavernous nerve electrical stimulation. The mean arterial pressure (MAP) was recorded, and the ICPmax/MAP ratio was calculated. Sexual behavior, cholinesterase activity and blood testosterone level tests assessed. Main Outcome Measure: The quantitative value of ICPmax/MAP 14 days after the start of administration of the test drug and the comparison drug. Results: Animals with STZ-induced diabetes mellitus showed a significant decrease in ICPmax and ICPmax/ MAP ratio compared to the intact control group. When ipidacrine was administered to rats with DMED for 14 days, an increase in these indicators was noted. It was proved that ipidacrine at a dose of 6.7 mg/kg has noninferiority compared to sildenafil on the DMED model. Significant increase in ICPmax compared to STZ-control after electrostimulation of the cavernous nerve was recorded following administration of ipidacrine at a dose of 6.7 mg/kg (P < .05) and sildenafil at a dose 5 mg/kg (P < .05). Neither the test drug, nor the comparator were associated with increase in testosterone levels in blood; as well both drugs did not promote activation of sexual behavior. Clinical Implications: Ipidacrine may be considered as an effective therapy for DMED but needs to be verified in human investigations.Strengths & Limitations: The role of ipidacrine, was firstly demonstrated in rats with DMED. However, the results were obtained in animal experiments, and will be further tested in the study of receptor interactions and the determination of cellular targets. Conclusion: This is the first study to show that administration of ipidacrine, the reversible cholinesterase inhibitor, improved erectile function in diabetic rats and these results may be beneficial in further studies using ipidacrine for treatment of DMED, particularly in non-responders to PDE5 inhibitors.
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