ABSTRACT
Background Corneal transplantation is a primary method for the treatment of serious corneal diseases, but its application is limited because of the shortage of corneal donor.The study on tissue engineering corneal epithelium provides a new approach to corneal transplantation, and the biological scaffold materials for tissue engineering corneal epithelium is an issue of increasing concern.Bacterial cellulose membrane has been used in medical field,but its application in tissue engineering corneal epithelium deserves more researching.Objective This study was to evaluate the biocompatibility of bacterial cellulose membrane as a biological scaffold of tissue engineering corneal epithelium.Methods Corneal epithelium was isolated from 1 month-old New Zealand White rabbit.Corneal epithelial cells were cultured using explant method and identified by detecting the CK-3 expression using immunofluorescence technique.The second generation ceils were inoculated on bacterial cellulose membrane and culture plate, respectively, and the growth status of the cells were examined and compared under the optical microscope.The cell activity/toxicity test was performed by LIVE/DEAD cell staining kit at the third day after inoculation to evaluate the survival rate.The ultrastructure of the cell surface was examined under the scanning electron microscope.The study was performed in accordance with the ARVO Statement.Results Rabbit corneal epithelial cells grew well 1 week after primarily cultured with a cobblestone-like appearance and positive response for CK3 antibody.The cells on the bacterial cellulose membrane presented a round shape and regular arrangement and showed the green fluorescence for LIVE/DEAD test,with the survival rate 100％.Abundant leafy protrusion, microvilli and intercellular junction were seen under the scanning electron microscope.In addition, mitosis phase of cells and many filopodia between the cells and bacterial cellulose membrane were also exhibited.Conclusions Rabbit corneal epithelial cells can grow well in bacterial cellulose membrane.Bacterial cellulose membrane has good biocompatibility, indicating that bacterial cellulose membrane can be used as new biological material for tissue engineering corneal epithelium.
ABSTRACT
Keratoplasty is a choice for the treatment of ocular surface diseases caused by corneal limbal stem cells (LSCs) deficiency.The application of traditional keratoplasty is limited by avaibility of donor corneas and allograft rejection.Constructruction of tissue engineering corneal epithelium provides an important and effective approach to the transplantation of cornea,because it can solve the lack of donor corneas and avoid allograft rejection following keratoplasty.However,the selection of the seed cells is crucial to corneal tissue engineering.What is more,the research of seed cells is becoming more and more widespread,just like embryonic stem cells (ESCs) and LSCs.This article summarized the selection of seed cells and the progress of tissue-engineered human corneal epithelium.
ABSTRACT
Objective To study the effect of IZL-2003Ⅱ Immune Therapy System on lymphocyte immuno-function induced by chemotherapy in advanced non-small-cell lung cancer(NSCLC)patients.Methods 112 cases of advanced NSCLC patients were randomly divided into the two groups .The treatment group ( n=56 ) was given IZL-2003ⅡImmune Therapy System after chemotherapy for 6d as a couse and the control group ( n=56) was given chem-otherapy only.The peripheral blood routine and T lymphocyte subgroup (CD3+,CD4+, CD8+and CD4+/CD8+)activity of patients in both group were measured by flow cytometry 1 day before chemotherapy and the 8th day after chemothera-py.ResultsThere was difference between the treatment group and control group on the increasing rate of Leucocyte (P<0.05)the 8th day after treatment;After the 8th day,the expression levels of CD8+T cells was lower,but has no significant(P<0.05);The expression levels of CD3+,CD4+and the ratio of CD4+/CD8+were higher in the treatment group(P<0.05).The expression levels of CD3+T cells was lower,but has no significant(P<0.05);The expression levels of CD4+T cells and the ratio of CD 4+/CD8+were significantly lower after treatment in control group ( P<0.05);the expression levels of CD8+T cell was higher significantly in the control group (P<0.05).Conclusion IZL-2003ⅡImmune Therapy System can antagonize myelosuppression and elevated the immunologyical function of advanced NSCLC patients significantly .
ABSTRACT
Objective To observe the efficacy and the influence on the immune function and analgesic effect of Sodium Cantharidinate and Vitamin B6 Injection in treating advanced non-small cell lung carcinoma (NSCLC) patients combined with GP chemotherapy. Methods Totally 79 patients with advanced NSCLC were randomly divided into the observation group and the control group. The observation group accepted GP chemotherapy plus Sodium Cantharidinate and Vitamin B6 Injection, and the control group was treated with GP chemotherapy. After 2 cycles of chemotherapy, the efficacy was evaluated, cellular immune function index and analgesic effect were observed. Results The objective response rate (RR) of the treatment group was 72.50%(29/40), and the control group was 48.72%(19/39). There was no significant difference between the two groups (P>0.05). After 2 cycles of treatment, the ratio of CD3+, CD4+, CD8+, CD4+/CD8+ and NK in the observation group were higher than the control group, with significant differences (P<0.05). The pain relief rate in the observation group was 75.00%(30/40), and it was 51.28%(20/39) in the control group, the difference was significant between the two groups (P<0.05). Conclusion Sodium Cantharidinate and Vitamin B6 Injection combined with GP chemotherapy can improve the short-term effect rate and the cellular immune function. It can also relieve the pain and improve the guality of life of patients with advanced NSCLC.