To investigate the expression of the subunit p65 of NF-kappaB and inhibitor kappa B alpha (IkappaBalpha) in mouse uterus during peri-implantation, thereby investigating whether transient activation of nuclear factor-kappaB (NF-kappaB) takes place during embryo implantation in mice. Immunohistochemical technique was used to examine the expression and localization of p65 in endometrium or deciduas, and Western blot analysis was employed to detect the levels of IkappaBalpha protein in mouse endometrium or deciduas. P65 protein was detected in stromal cells, epithelial cells of endometrium as well as in myometrium. Staining was predominately seen in the cytoplasm of the cells. Staining intensity for p65 was stronger in the epithelial compartment than the stromal compartment and myometrium. Staining intensity increased slightly during pregnancy, and it reached a high level on pregnancy day 5 and day 8. In contrast to p65, the level of IkappaBalpha protein was lowest on pregnancy day 5 in all groups. Our results suggested that NF-kappaB may regulate embryo implantation by its transient activation in mice.
Decidua/metabolism ; Embryo Implantation/*physiology ; Endometrium/metabolism ; I-kappa B Proteins/*biosynthesis ; NF-kappa B/*biosynthesis ; Time Factors ; Uterus/*metabolism ; Uterus/physiology

The activity of matrix metalloproteinases (MMPs) in the uterine flushing and endometrial tissue of normal adult women wearing FCu-IUD (fixed Cu-IUD) or FICu-IUD (indomethacin-releasing FCu-IUD) was observed by using zymography on SDS-PAGE containing gelatin. The results showed that the activity and kinds of MMPs in FCu-IUD group were increased significantly as compared with themselves before being inserted FCu-IUD. However, compared with the FCu-IUD group, the activity of some kinds of MMPs in the FICu-IUD group was decreased significantly. These data suggest that IUD can enhance the activity of MMPs in human endometrium, intermediated by prostaglandins, and MMPs may have relation to IUD-induced menorrhagia and indomethacin reduces IUD-induced menorrhagia by partly inhibiting MMPs synthesis.
Endometrium/*enzymology ; Indomethacin ; Intrauterine Devices, Copper/*adverse effects ; Intrauterine Devices, Medicated/*adverse effects ; Matrix Metalloproteinases/*metabolism ; Uterine Hemorrhage/etiology ; Uterine Hemorrhage/prevention & control

To investigate the expression of the subunit p65 of NF-kappaB and inhibitor kappa B alpha (IkappaBalpha) in mouse uterus during peri-implantation, thereby investigating whether transient activation of nuclear factor-kappaB (NF-kappaB) takes place during embryo implantation in mice. Immunohistochemical technique was used to examine the expression and localization of p65 in endometrium or deciduas, and Western blot analysis was employed to detect the levels of IkappaBalpha protein in mouse endometrium or deciduas. P65 protein was detected in stromal cells, epithelial cells of endometrium as well as in myometrium. Staining was predominately seen in the cytoplasm of the cells. Staining intensity for p65 was stronger in the epithelial compartment than the stromal compartment and myometrium. Staining intensity increased slightly during pregnancy, and it reached a high level on pregnancy day 5 and day 8. In contrast to p65, the level of IkappaBalpha protein was lowest on pregnancy day 5 in all groups. Our results suggested that NF-kappaB may regulate embryo implantation by its transient activation in mice.
Animals ; Decidua ; metabolism ; Embryo Implantation ; physiology ; Endometrium ; metabolism ; Female ; I-kappa B Proteins ; biosynthesis ; Mice ; NF-KappaB Inhibitor alpha ; NF-kappa B ; biosynthesis ; Pregnancy ; Time Factors ; Uterus ; metabolism ; physiology

The activity of matrix metalloproteinases (MMPs) in the uterine flushing and endometrial tissue of normal adult women wearing FCu-IUD (fixed Cu-IUD) or FICu-IUD (indomethacin-releasing FCu-IUD) was observed by using zymography on SDS-PAGE containing gelatin. The results showed that the activity and kinds of MMPs in FCu-IUD group were increased significantly as compared with themselves before being inserted FCu-IUD. However, compared with the FCu-IUD group, the activity of some kinds of MMPs in the FICu-IUD group was decreased significantly. These data suggest that IUD can enhance the activity of MMPs in human endometrium, intermediated by prostaglandins, and MMPs may have relation to IUD-induced menorrhagia and indomethacin reduces IUD-induced menorrhagia by partly inhibiting MMPs synthesis.
Adult ; Endometrium ; enzymology ; Female ; Humans ; Indomethacin ; Intrauterine Devices, Copper ; adverse effects ; Intrauterine Devices, Medicated ; adverse effects ; Matrix Metalloproteinases ; metabolism ; Middle Aged ; Uterine Hemorrhage ; etiology ; prevention & control

ObjectiveTo investigate and analyze case reporting ethical review and patient informed consent reports published in the comprehensive journals of clinical medicine in China in 2022. MethodsAccording to the data from the 2022 Edition of the Chinese Science and Technology Journal of the Citation Reports （Extended Version），the case reports published in comprehensive journals of clinical medicine in 2022 were selected as the research objects.The information on ethics and patient informed consent was extracted from the case reports that met the selection criteria，and Microsoft Excel 2021 and SPSS 21.0 were used to sort out and analyze the data. ResultsA total of 587 case reporting articles were published in the 42 included journals in 2022，of which 36 （6.13%） reported on science and technology ethics and/or informed consent.Case reports reporting on science and technology ethics and/or informed consent mostly came from the key magazine of China technology （88.89% Vs.65.88%），and the proportion of manuscripts involving science and technology ethics on the official website of the journal was relatively high （86.11% Vs.63.88%），and the difference was statistically significant （P<0.01）. ConclusionThe proportion of case reports of science and technology ethics and/or informed consent in journals of comprehensive discipline classification of clinical medicine was relatively low.Currently，most international journals are required to obtain the informed consent of patients or legal guardians before publishing case reports.Compared with this，there are still certain gaps in China，which need to be paid great attention to.