Treatment of Severe Asherman Syndrome by Collagen Scaffold Loaded With Autologous Bone Marrow Mononuclear Cells

Severe asherman syndrome will lead to infertility, and the most common method to treat asherman syndrome is operating to dissect adhesions. In order to prevent the postoperative re-adhesion, many physical isolation measures have been tried. However, they don't improve the microenvironment of endometrial regeneration. It's reported that bone marrow mononuclear cells have good effects on the functional recovery of injured uterus. This study will determine whether collagen scaffolds loaded with autologous bone marrow mononuclear cells will be more effective than Foley balloon catheters at treating infertile women with severe intrauterine adhesions who have taken hysteroscopic adhesiolysis. In addition, the study will be carried out in 2 centers, one is the Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School, the other is Changzhou Maternal and Child Health Care Hospital that is in Jiangsu Province.

Inclusion criteria

• Having a clear desire to fertility;
• Infertility that is defined as a women fails to become pregnant after having a normal sex life for two years without contraception.
• Hysteroscopy examination confirmed intrauterine adhesions(patients who has at least one of the three symptoms which are amenorrhea, hypomenorrhea or infertility, and hysteroscopy or histologic diagnosis of intrauterine adhesions), meeting American Fertility Society diagnostic criteria Ⅱ-III;
• Normal ovarian function;
• Regular Menstrual cycles and menstruation is normal before abortion or curettage;
• BMI< 30 kg/m2;
• Sign a consent form;
• Follow the test plan and follow-up process.

Exclusion criteria

• Hereditary diseases;
• Simple thin endometrium with no uterine cavity adhesion;
• Simple Uterine scar formation with no uterine cavity adhesion after hysteroscopic adhesiolysis;
• Contraindications to bone marrow collection or assisted reproductive technology;
• History of malignant tumor;
• Other diseases associated with the uterus: uterine fibroids, severe adenomyosis, severe malformations of the uterus;
• Abnormal blood coagulation, liver and kidney dysfunction, or other diseases which the researchers think may affect the study(such as: uncontrolled hypertension, diabetes, sexually transmitted diseases);
• With a positive urine pregnancy test；
• Participating in other clinical studies at the same time;
• Hysteroscopic adhesiolysis more than 3 times in the past.