Treatment effect of umbilical cord mesenchymal stem cells on paraquat poisoning lung injury
A technology of mesenchymal stem cells and paraquat is applied in the field of treatment of lung injury caused by paraquat poisoning by umbilical cord mesenchymal stem cells. The effect of reducing the quality of life and animal mortality
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[0023] Materials and Methods
[0024] 1. Animals
[0025] Healthy adult female C57BL / 6 mice, weighing 19-21g, moved in a barrier environment with constant temperature and humidity indoors, artificial lighting for 12h / d, free access to food and water, and adaptive feeding for 1 week before the experiment.
[0026] 2. Isolation, culture and identification of UCMSC
[0027] UCMSC took healthy fetuses from the Air Force General Hospital, signed informed consent, and had no infectious diseases. The umbilical cord sample was rinsed and cut into 2-3mm 3 The small pieces were digested with 1% collagenase digestion solution at 37°C for 2 h, filtered through a 70 μm sieve, the supernatant was collected, and the cells were collected by centrifugation. After washing with PBS, add 5 mL of culture medium to resuspend the cells, and culture in a 5% CO2 incubator at 37 °C. When 80%-90% confluent, passage at a ratio of 1:2 or 1:3. Cells of passage 6-8 were used for transplantation in anim...
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