The Long-term Effect of Perinatal Tissue Mesenchyme Stem Cells in the Treatment for Caesarean Section Scars

Maternal and Child Health Hospital of Foshan

Overview

The study is to investigate the long-term efficacy of perinatal tissue mesenchyme stem cells treatment on the appearance of a caesarean scar as compared to a similar untreated scar.

This trial is a continuation of the investigators' previous clinical trial (NCT02772289). In the previous three-arm randomized clinical trial involving women with primiparous singleton pregnancies, the investigators found umbilical cord mesenchymal stem cells was not significantly different from placebo for the reduction of cesarean section skin scar and did not increase recognition of participants'satisfaction at the sixth month follow-up. Although there was no statistical difference, the trial study found that the total vancouver scar scale rating was lower with the dose increased. Some studies have suggested that it usually took 18-24 months for a typical scar matures. In this trial, the investigators want to continue to investigate the efficacy of perinatal tissue mesenchyme stem cells treatment on the appearance of a caesarean scar as compared to a similar untreated scar at the three years follow-up.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

TRIPLE

Conditions

Cicatrix

Interventions

Mesenchyme Stem Cells low-dose groupBIOLOGICAL

Participants will receive transdermal one dose of 1\*10\^6 cells of Perinatal Tissue Mesenchyme Stem Cells in the gel once a day for continuous three days and then receive transdermal placebo without of Perinatal Tissue Mesenchyme Stem Cells in the gel once a day for continuous next three days.

Mesenchyme Stem Cells high-dose groupBIOLOGICAL

Participants will receive transdermal one dose of 1\*10\^6 cells of Perinatal Tissue Mesenchyme Stem Cells in the gel once a day for continuous six days.

PlaceboBIOLOGICAL

Participants will receive transdermal placebo without of Perinatal Tissue Mesenchyme Stem Cells in the gel once a day for continuous six days.

Eligibility

Sex: FEMALEMin age: 21 YearsMax age: 35 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria: * Primiparous women receiving cesarean delivery * Ages between 21-35 years * Gestation ages ≥ 37 weeks and \< 42 weeks * Willing to give and sign an informed consent form and a photographic release form * Willing to comply with study dosing and complete the entire course of the study Exclusion Criteria: * Any systemic uncontrolled disease * Recent or current cancer * History or presenting with a keloid formation * Wounds or local disease in treatment area * Planning any other cosmetic procedure to the study area during the study period * Smoking

Locations (1)

Maternal and Child Health Hospital of Foshan

Foshan, Guangdong, China

Outcomes

Primary Outcomes

Vancouver Scar Scale score

The investigators measured scar at three years post treatment using Vancouver Scar Scale (VSS). The VSS included vascularity (normal, pink, red, or purple), pigmentation (normal, hypopigmented, mixed, or hyperpigmented), height (flat, \< 2 mm, 2-5 mm, or \> 5 mm), and pliability (normal, supple, yielding, firm, ropes, or contracture). Each variable contained ranked subscales that could be summed to obtain a total score ranging from 0 to 14, with 0 representing normal skin and a higher score representing a more marked or abnormal scar. The Chinese version of the VSS has been shown to have good intraclass correlations and Cronbach's α measures. All scars will be assessed independently by two observers on the same day when the participants are lying in a supine position with the scar exposed in bright light. If the data varies, another researcher will be required to assess the scar at the same day and the results with the highest frequency will be recorded.