Clinical Research Directory

Clinical Study on the Effect of Umbilical Cord Mesenchymal Stem Cell Exosomes on Endometrial Repair of Intrauterine Adhesions

Intrauterine adhesions (IUA) is a group of diseases caused by endometrial injury leading to occlusion of the uterine cavity and serious abnormality of the uterine cavity morphology, which causes primary or secondary infertility by affecting embryo implantation. At present, the poor effectiveness of clinical treatment methods has made the thin endometrium after intrauterine adhesions an urgent problem to be solved in the clinical field of assisted reproduction. Stem cells with multi-directional differentiation potential provide a new idea for the treatment of cervical adhesions. However, due to limitations such as stem cell extraction, technical conditions, and ethical issues, clinical application cannot be widely carried out. Exosomes are vesicle structures produced by paracrine secretion of cells, containing abundant proteins, RNA, etc., and mediating information exchange between cells. Recent studies have found that stem cells play a role in tissue repair mainly through paracrine, and stem cell-derived exosomes have similar functions to stem cells. Human cord mesenchymal stem cells were selected as an intervention for this clinical study because of their wide source, easy access, and low immunogenicity. Therefore, in this clinical study, the investigator will evaluate the clinical safety and efficacy of infusing human umbilical cord mesenchymal stem cell exosomes into the uterine cavity for the treatment of thin endometrium after intrauterine adhesions.

hBMSC Uterine Artery Infusion for Severe IUA-Related Infertility

The goal of this clinical trial is to test a new approach: delivering human bone marrow mesenchymal stem cells (hBMSCs) via the uterine artery to treat infertility caused by severe intrauterine adhesions (IUA). This method may help stem cells better reach the deep layer of the endometrium, promote endometrial repair, and improve pregnancy chances. Primary Objective: To assess whether stem cell therapy improves pregnancy success rates (clinical pregnancy rate after embryo transfer) in infertility patients with severe IUA undergoing IVF. Secondary Objectives: 1. To evaluate the safety of stem cell therapy (e.g., side effects or complications). 2. To explore how stem cells help repair the endometrium (e.g., by promoting endometrial growth or improving uterine conditions). By tracking endometrial thickness, embryo implantation rate, clinical pregnancy rate, and other indicators, we will evaluate whether this new approach is safe and effective. Treatment Groups: Control group: Standard hormone replacement therapy (HRT) cycle medication only. Stem cell therapy group: Standard HRT medication + hBMSC infusion via uterine artery. Both groups will undergo embryo transfer, and clinical pregnancy rates will be compared.

Use of Nitrous Oxide During Office Hysteroscopy

The goal of this clinical trial is to assess the use of inhaled nitrous oxide during office hysteroscopy. The main questions it aims to answer are: * Does it reduce pain during the procedure? * Does it increase the success rate? * Does it improve patient satisfaction? * Does it reduce anxiety? * Which populations benefit more (e.g., parity, menopausal status, number of previous surgeries, type and duration of procedure, and type of device)? Participants will be asked about their pain levels during the procedure, as well as their anxiety levels. All responses will be recorded. Written informed consent will be obtained prior to initiation.

Evaluating Mechanically Engineered Stem Cell Exosomes for Treating Endometrial Injury: A Clinical Study

The goal of this clinical trial is to evaluate if engineered mechanically umbilical cord-derived stem cell exosomes, or conventional umbilical cord -derived stem cell exosomes, can improve endometrial thickness in women with thin endometrium. The main questions it aims to answer are: Can exosomes delivered via subendometrial injection improve endometrial thickness or clinical pregnancy rates compared to PRP (platelet-rich plasma)? Are there significant differences in endometrial thickness between the two treatment groups? Researchers will compare the intervention groups, which one group receives mechanical exosomes and the other receives conventional esosomes via subendometrial injection, to the control group, which receives PRP via the same methods, to see if exosomes provide superior therapeutic effects. Participants will: Receive either mechanical exosomesor or conventional esosomes or PRP through subendometrial injection. Be monitored for changes in endometrial parameters.