No abstract

SummaryRecent observations describe an increase in platelet aggregability and a decrease in fibrinolytic activity in the early morning hours. To determine whether anticoagulant proteins also show such a circadian variation we measured protein C (PC), protein S (PS), antithrombin (AT) and heparin cofactor-II (HC-II) levels on venous plasma samples taken from 10 healthy men at three-hour intervals throughout a 24-hour period. To investigate the possible temporal mapping of circadian periodicity, we also measured plasma levels of beta-thromboglobulin (β-TG) as an indicator of platelet activation, and interleukin-6 (IL-6) as one of the possible regulatory factors that drive this rhythm.Blood samples were drawn at 6 a.m., 9 a.m., noon, 3 p.m., 6 p.m., 9 p.m. and midnight. PC, IL-6 and β-TG were measured by ELISA, PS and AT by latex immune assay and HC-II by chromogenic substrate method. A significant circadian variation was found in PC, PS, AT, β-TG and IL-6, but not in HC-II levels. PC, PS, IL-6 and β-TG were at their peaks at 6 a.m., and nadirs at a time from noon to midnight. AT peak was at 6 p.m. and nadir at noon. The regression of PS on IL-6 was significant. Although the fluctuations of PS and AT were within the normal ranges during the day, some PC levels of two subjects were below the lower normal limit (0.70).These data indicate that PC, PS, and AT show a marked circadian periodicity as the other components of the blood coagulation and fibrinolytic system do. The similar trends in plasma concentrations of PC, PS, β-TG and IL-6 may be coincidental, but could reflect a common regulatory mechanism or an effect on each other. The clinical implications of these physiological changes in coagulation inhibitors and the role of IL-6 in the anticoagulant response deserve further studies.

In up to 92% of the cystectomy samples, normal ovarian tissue was found adjacent to the benign cyst; however, functional follicle loss was slightly, but significantly, higher in the endometriomas.

Although the techniques are similar in most scenarios, in situ uterine repair during cesarean sections appears to be more advantageous than exteriorization with respect to the mean operative time, time to the first recognized bowel movement, surgical site infection rate and length of hospital stay.

Purpose of investigation: Gonadotropin stimulated intrauterine insemination (IUI) cycles performed following one month after hysterosalpingography (HSG) are associated with improvement in clinical pregnancy rates in unexplained infertile couples. Materials and Methods: A retrospective cohort study was performed between 2008 and 2014. A total of 92 unexplained infertile couples undergoing their first cycle IUI stimulated by gonadotropins were included in the analysis. Participants were classified into two groups according to IUI cycles performed one month (Group A, n = 25 cycles) or longer than one month (Group B, n = 67 cycles) after the HSG procedure. Result: The overall clinical pregnancy rate was found as 25% (23 clinical pregnancies / 92 cycles). Clinical pregnancy rate was 44 % (11/25) for Group A and 17.9 % (12/67) for Group B. In Group A, there were significantly higher clinical pregnancy rates compared to Group B (OR: 3.6, 95% CI, 1.3-9.8; p = 0.012). Conclusions: It has been demonstrated that fertility improving effect of HSG was most prominent in the first six months after procedure. Likewise, in gonadotropin stimulated IUI cycles performed following one month after HSG, there seems to be an improvement in pregnancy rates in unexplained couples. In unexplained cases, it may be a reasonable approach to plan IUI cycles in the first month after HSG in clinical practice.