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Characterization of a novel role for the dynamin mechanoenzymes in the regulation of human sperm acrosomal exocytosis.

STUDY QUESTION: Does dynamin regulate human sperm acrosomal exocytosis? SUMMARY ANSWER: Our studies of dynamin localization and function have implicated this family of mechanoenzymes in the regulation of progesterone-induced acrosomal exocytosis in human spermatozoa. WHAT IS KNOWN ALREADY: Completion of an acrosome reaction is a prerequisite for successful fertilization in all studied mammalian species. It follows that failure to complete this unique exocytotic event represents a common aetiology in the defective spermatozoa of male infertility patients that have failed IVF in a clinical set

Воздействие расширительного энергетического субстрата на козлятину, хранящуюся в 17 °С.

Искусственное оплодотворение у коз, как правило, зависит от охлажденных доз спермы, однако оптимальный энергетический субстрат для поддержания метаболизма спермы остается неясным. Цель этого исследования состояла в том, чтобы оценить воздействие различных энергетических субстратов на метаболизм спермы козла и спермы козлятины и их моторность при охлаждении 17 °С. Семя от six Козлы мужского пола Мурциано-Гранадина были собраны и разбавлены в ПБД, дополненных 35 mM глюкозы, фруктозы, пируваты или лактата в ходе первого эксперимента. В ходе второго эксперимента оценивалось воздействие различных к

Advances in real-world research on fertility preservation in men with malignant tumours.

Malignant tumours have become one of the diseases that seriously threaten human health, and their incidence is increasing year by year. Worldwide, malignant tumours have become one of the most common causes of death in men. With the continuous progress of comprehensive oncological treatment, the cure rate and the survival rate of malignant tumours have been increasing, and the survival cycle has been prolonged, so the issue of fertility preservation in male malignant tumour patients has received widespread attention. In this review, researchers will discuss the real-world research progress rel

Hidrox® Counteracts Cyclophosphamide-Induced Male Infertility through NRF2 Pathways in a Mouse Model.

BACKGROUND: Every year, men use cyclophosphamide to treat various cancers and autoimmune diseases. On the one hand, this chemotherapy often has the beneficial effect of regressing the tumor, but on the other hand, it leads to infertility due to excessive oxidative stress and apoptosis in the testes caused by its metabolite, acrolein. METHODS: The objective of this study was to evaluate the beneficial power of a new compound called Hidrox®, containing 40-50% hydroxytyrosol, in counteracting the damage related to fertility induced by cyclophosphamide. The study was conducted using a single intr

Açai Berry Attenuates Cyclophosphamide-Induced Damage in Genitourinary Axis-Modulating Nrf-2/HO-1 Pathways.

Cyclophosphamide (CYP) is used to treat different malignancies and autoimmune disorders in men. This chemotherapy frequently reduces tumors, which is beneficial, but also causes infertility because of severe oxidative stress, inflammation, and apoptosis in the bladder and testes brought on by its metabolite, acrolein. The goal of this study was to assess the efficacy of a novel food, açai berry, in preventing CYP-induced damage in the bladder and testes.MethodsCYP was administered intraperitoneally once during the experiment at a dose of 200 mg/kg body weight diluted in 10 mL/kg b.w. of water.

Exosomes in oncofertility: emerging roles in chemotherapy-induced reproductive damage and fertility preservation.

ABSTRACT: Oncofertility has emerged as a critical interdisciplinary field addressing the reproductive challenges faced by cancer patients, particularly those undergoing chemotherapy. While chemotherapeutic agents remain indispensable in cancer therapy, their gonadotoxic effects frequently result in diminished ovarian reserve, impaired spermatogenesis, and long-term infertility. Exosomes - small extracellular vesicles enriched with nucleic acids, proteins, and lipids - are increasingly recognized as key mediators of intercellular communication in both pathological and regenerative contexts. Rec

The Roles of EDA2R in Ageing and Disease.

Ageing is a complex biological process driven, in part, by inflammaging. Recent research identifies the ectodysplasin A2 receptor (EDA2R) as a key regulator of inflammaging and a novel biomarker of ageing, with its expression increasing with age across diverse tissues in humans and animal models. Elevated EDA2R gene expression is associated with accelerated ageing, cellular senescence, frailty, obesity, acne, radiation response and increased levels of inflammatory, renal, cardiac and vascular biomarkers. Similarly, elevated EDA2R protein levels, a critical component of the proteomic ageing clo

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… While EDA2R is critical for embryonic ectodermal development (Mikkola 2008 ; Lee and Tumbar 2012 ) and may influence sperm capacitation (Anjorin et al. 2025 ), the optimal window for safe targeting in age‐related pathologies is unknown, as premature suppression could disrupt physiological roles. …

Physiological functions and pharmacological targeting of transient receptor potential channels.

Transient receptor potential (TRP) channels represent an extensive and diverse protein family fulfilling salient roles as versatile cellular sensors and effectors. The pivotal role of TRP and related ion channels in sensory processes has been well documented. Over the last few years, a new concept has emerged that TRP proteins control an exceptionally broad spectrum of homeostatic physiological functions such as maintenance of body temperature, blood pressure, transmitter release from neurons, mineral and energy homeostasis, and reproduction. This notion is further supported by more than 20 he

Invited Lectures : Overviews Purinergic signalling: past, present and future.

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The Fifth International Meeting of ISEV, ISEV2016, Rotterdam, The Netherlands, 4 - 7 May, 2016.

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Emerging therapies for autosomal dominant polycystic kidney disease with a focus on cAMP signaling.

Autosomal dominant polycystic kidney disease (ADPKD), with an estimated genetic prevalence between 1:400 and 1:1,000 individuals, is the third most common cause of end stage kidney disease after diabetes mellitus and hypertension. Over the last 3 decades there has been great progress in understanding its pathogenesis. This allows the stratification of therapeutic targets into four levels, gene mutation and polycystin disruption, proximal mechanisms directly caused by disruption of polycystin function, downstream regulatory and signaling pathways, and non-specific pathophysiologic processes sha

Emergency Care

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ISEV2019 Abstract Book

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C

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Экстраклектные везикли для клинической диагностики: от массовых измерений до одновидового анализа.

Экстраклектные везикулы (ЭМ) играют ключевую роль в межклеточном общении, сигнальных путях и патогенезе заболеваний, перевозя биомолекулы, такие, как ДНК, РНК, белки и липиды, полученные из клеток их происхождения, и они продемонстрировали значительный потенциал в области клинического применения. Их клиническое значение подчеркивает необходимость применения чувствительных методов для полной реализации их диагностического потенциала. В рамках этого всеобъемлющего обзора мы изучаем гетерогенность ЭМ, связанную с биогенезом, структурой, содержанием, происхождением, типом выборки и функциональными

Резюме докладов 53rd Конференция Европейского общества генетики человека: интерактивные электронные постеры.

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… The β-defensin 126 (DEFB126) and β-defensin 128 (DEFB128), are genes preferentially expressed in the epididymis, where these proteins may help protect the maturing sperm cells and play a vital role during sperm capacitation. …

ISEV2018 абстрактная книга

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Четвертое Международное совещание ИСЕВ, ISEV2015.

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ISEV2020 Резюме

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