نتایج جستجو برای: sexual cycle
تعداد نتایج: 386745 فیلتر نتایج به سال:
Depression and sexual dysfunction are both common in the general population. When they co-exist they have the potential to impact negatively on each other in a bidirectional manner. Medication used to treat depression may cause additional problems with the sexual response cycle; although no drug is completely innocent, serotonergic agents such as selective serotonin reuptake inhibitors (SSRIs) ...
Using a different model for female sexual response to address women's problematic low sexual desire.
An intimacy-based sex response cycle was used in the assessment of 47 women referred with low sexual desire. All could relate to the model and multiple breaks in the cycles were identified. Emotional intimacy to motivate the women to find sexual stimuli to elicit arousal was insufficient in 50%. Sexual stimuli and context were minimal in 53%. Psychological factors diminishing arousability were ...
Transmission represents a population bottleneck in the Plasmodium life cycle and a key intervention target of ongoing efforts to eradicate malaria. Sexual differentiation is essential for this process, as only sexual parasites, called gametocytes, are infective to the mosquito vector. Gametocyte production rates vary depending on environmental conditions, but external stimuli remain obscure. He...
The basis for concluding that a system of genetic exchange exists in African trypanosomes of the Trypanosoma brucei group is outlined by the accumulated data from variation in natural parasite populations and from laboratory crossing experiments. The results indicate that these parasites can complete their life cycle either with or without genetic exchange. This sexual event involves meiosis an...
Sexual problems are widespread among female cancer patients and survivors. Dysfunction may result from various oncologic therapies such as surgery, radiation therapy, chemotherapy, hormonal manipulation, and cytostatic medication. Additionally, psychologic distress that the patient or her partner experiences during diagnosis and treatment of malignancy can impair a healthy female sexual respons...
By using a bit-string model of evolution, we find a successful route to diploidy and sex in simple organisms. Allowing the sexually reproducing diploid individuals to also perform mitosis, as they do in a haploid-diploid cycle, leads to the complete takeover of the population by sexual diploids. This mechanism is so robust that even the accidental conversion and pairing of only two diploids giv...
In fungi belonging to the phylum Basidiomycota, sexual compatibility is usually determined by two genetically unlinked MAT loci, one of which encodes one or more pheromone receptors (P/R) and pheromone precursors, and the other comprehends at least one pair of divergently transcribed genes encoding homeodomain (HD) transcription factors. Most species are heterothallic, meaning that sexual repro...
Estrogen is associated with female sexual behaviors, particularly receptive behaviors during the reproductive cycle. Less is known about the relationship between estrogen and female preference behaviors that may precede receptivity and copulation. Separating the mechanisms underlying preference from receptivity is often confounded by the tightly coupled cycle- or estrogen-dependent expression o...
Cryptococcus gattii is a basidiomycetous human fungal pathogen that typically causes infection in tropical and subtropical regions and is responsible for an ongoing outbreak in immunocompetent individuals on Vancouver Island and in the Pacific Northwest of the US. Pathogenesis of this species may be linked to its sexual cycle that generates infectious propagules called basidiospores. A marked p...
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