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Мурашев Аркадий Николаевичдоктор биологических наук, профессор Руководитель подразделения (лаборатория биологических испытаний) Тел.: Эл. почта: murashev@fibkh.serpukhov.su |
Избранные публикации
- (2009). Добротная лабораторная практика (GLP) – основа обеспечения качества доклинических исследований. Мол. медицина 5, 42–47
- (2009). Обязанности руководителя исследования при проведении испытаний безопасности химических веществ, биотехнологических и нанотехнологических продуктов в соответствии с правилами надлежащей лабораторной практики. Токсикол. вестник 5, 2–4
- (2009). Влияние человеческого рекомбинантного и бычьего белков теплового шока (70 кДа) на гемодинамику и гемостаз при эндотоксиновом шоке у крыс. Доклады РАН 429 (5), 691–693
- (2008). Моделирование глобальной ише-мии головного мозга путем била-теральной окклюзии сонных арте-рий у бодрствующих гипертензив-ных крыс (SHR-SP). Бюл. эксперим. биологии и медицины 146 (12), 627–630
- (2005). HLDF-6 peptide affects behavioral reactions and organism functions dependent on androgen hormones in normal and castrated male mice. Regul. Pept. 127 (1-3), 111–21
[+]The hexapeptide Thr-Gly-Glu-Asn-His-Arg (HLDF-6), which was first identified as an active fragment of the human leukemia differentiation factor (HLDF) molecule, displays differentiation-inducing, neuroprotective and anti-drug abuse activities. Most of its in vivo effects were revealed only on male animals. We have studied HLDF-6 effects on a variety of organism functions and behavioral reactions, which are known to be dependent on androgen steroid hormones, both on castrated and normal (sham-operated) animals. Male NMRI mice were castrated or sham-operated at the age of 55 days (after puberty). After that, HLDF-6 peptide was injected daily during 3 weeks, followed by behavioral, morphological and biochemical testing. HLDF-6 increased testosterone level (1.5- to 2-fold) both in sham-operated and castrated animals. Sexual activity and pain sensitivity, which are strongly reduced in castrates, were completely or partially recovered by HLDF-6. At the same time, the peptide caused some effects similar to castration in sham-operated animals: aggression and locomotor activity were decreased; oral grooming was prolonged. Morphological studies of accessory sex glands showed that HLDF-6 partially normalizes the morphology and functional activity of seminal vesicles in castrates, but it does not prevent castration-induced apoptosis of prostate epithelial cells. Based on these observations, we can assume that HLDF-6 peptide displays at least two effects on androgen hormones metabolism in males: it stimulates testosterone biosynthesis by both testes and adrenals and simultaneously inhibits its conversion to dihydrotestosterone (DHT), most probably by diminution of 5alpha-reductase isoform 1 mRNA expression.

