We observed no protection of the ovarian reserve with hormonal co-treatment during BEACOPPesc. This result supports efforts of ongoing trials to reduce chemotherapy intensity and toxicity. Alternative strategies for the protection of fertility must be offered to young female HL patients before the start of BEACOPPesc therapy.
The uterus and fallopian tubes represent a functionally united peristaltic pump under the endocrine control of ipsilateral ovary. We have examined this function by using hysterosalpingoscintigraphy (HSS), recording of intrauterine pressure, electrohysterography, and Doppler sonography of the fallopian tubes. An uptake of labeled particles into the uterus was observed during the follicular and luteal phases of the cycle after application into the vagina. Transport into the oviducts, however, could only be demonstrated during the follicular phase. Furthermore, the predominant transport was into the tube ipsilateral to the ovary containing the dominant follicle. The pregnancy rate following spontaneous intercourse or insemination was higher in those women in whom ipsilateral transport could be demonstrated. The amount of material transported to the ipsilateral tube was increased after oxytocin administration, as demonstrated by radionuclide imaging and by Doppler sonography following instillation of ultrasound contrast medium. An increase in the basal tone and amplitude of contractions was observed after oxytocin administration. These results support the idea that the uterus and fallopian tubes act as a peristaltic pump, which increases transport of sperm into the oviduct ipsilateral to the ovary bearing the dominant follicle. Oxytocin appears to play a critical role in this peristaltic pump. A failure of the peristaltic mechanism is possibly responsible for infertility. We propose the term tubal transport disorder (TTD) as a nosological entity. Results from HSS could be a useful adjunct for choosing treatment modalities in patients with patent fallopian tubes suffering from infertility. These patients may be better served with in vitro fertilization (IVF).
Loss of HMW vWF multimer bands occurred in patients undergoing ECMO support and resolved after the termination of ECMO. Although not detectable with coagulation screening tests, a vWF:RCo/vWF:Ag ratio <0.7 during ECMO was highly indicative for loss of HMW vWF multimers. Our findings may at least in part explain increased bleeding tendency during ECMO therapy. Administration of vWF concentrates may support restoration of primary hemostasis in patients with relevant bleeding during ECMO support.
The results of this study demonstrated that increased creatinine levels and lower PT before ECMO and secondary impaired platelet function significantly increased transfusion requirement.
During invasive aspergillosis, platelets might be involved in immune defense, but they also might contribute to the pathology of the disease. We tested the hypothesis that Aspergillus secretes factors that influence the activity and functionality of thrombocytes. Platelets were incubated with medium wherein Aspergillus fumigatus was grown. This fungal culture supernatant potently stimulated thrombocytes in a time- and dose-dependent fashion, inducing release of alpha and dense granules, membrane alterations, aggregation, and formation of microparticles. Fungus-induced platelet activation could be confirmed in vivo: thrombocytes from mice infected with A. fumigatus showed a higher activation level than platelets from noninfected animals. Two stimulating components in the fungal culture supernatant were identified: a fungal serine protease and the mycotoxin gliotoxin. Activation of platelets by fungal factors stimulates antifungal functions: platelets gain the capacity to interact with foreign particles, and they become able to inhibit fungal growth, thus supporting the host immune network. However, some consequences of platelet activation might also be harmful, including excessive inflammation and induction of thrombosis. These findings imply that measuring platelet activation in patients might be an interesting diagnostic parameter.
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