Dorsal root ganglion neurons promote proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells

Preliminary animal experiments have confirmed that sensory nerve fibers promote osteoblast differentiation, but motor nerve fibers have no promotion effect. Whether sensory neurons pro- mote the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells remains unclear. No results at the cellular level have been reported. In this study, dorsal root ganglion neurons （sensory neurons） from Sprague-Dawley fetal rats were co-cultured with bone marrow mesenchymal stem cells transfected with green fluorescent protein 3 weeks after osteo- genic differentiation in vitro, while osteoblasts derived from bone marrow mesenchymal stem cells served as the control group. The rat dorsal root ganglion neurons promoted the prolifera- tion of bone marrow mesenchymal stem cell-derived osteoblasts at B and 5 days of co-culture, as observed by fluorescence microscopy. The levels of mRNAs for osteogenic differentiation-re- lated factors （including alkaline phosphatase, osteocalcin, osteopontin and bone morphogenetic protein 2） in the co-culture group were higher than those in the control group, as detected by real-time quantitative PCR. Our findings indicate that dorsal root ganglion neurons promote the proliferation and osteogenic differentiation of bone marrow mesenchymal stem cells, which pro- vides a theoretical basis for in vitro experiments aimed at constructing tissue-engineered bone.

Therapy and Prevention of Postoperative Urosepsis of Ureter Endoscopic Lithotripsy for "Non-infection"

Objective To analyze the risk factors causing postoperative urosepsis in ureter endoscopic lithotripsy without infection preoperatively,in order to make a more effective and safer preventive and therapeutic strategy.Methods From January 2010 to January 2015,5 ureteral calculus patients undergoing ureter endoscopic lithotripsy with holmium laser were retrospectively enrolled in this clinical study.These patients suffered urosepsis postoperatively confirmed by the clinical presentations and laboratory results,while they had no infection in their blood and urine preoperatively.Without delay,5 patients were treated by anti-inflammation and anti-shock.Results The vasopressor drug was stopped gradually after 12-36 hours.The body temperature was recovered to normal in 2 or 3 days,and the blood and urine test results were not abnormal in 7 days.At last,5patients were all cured.Conclusions Stone and operation themselves are potential factors to cause urosepsis after ureter endoscopic lithotripsy.Especially for patients who had not presented infection preoperatively,careful preparation preoperatively,corrective manipulation,low pressure irrigation,drainage and controlling time during operation,and early diagnosis,appropriate treatment postoperatively are the key to cure and prevent urosepsis.

Discussion on Maxing Ganshi Decoction in the Treatment of COVID-19 Based on Triple Energizer Transmission Theory

COVID-19 is caused by novel coronavirus(2019-nCoV),which has the characteristics of strong infectivity,rapid onset and rapid spread.It is popular in China and other parts of the world,and there are no special drugs at present.This disease belongs to the category of plague in traditional Chinese medicine.Combined with the theory of triple energizer transmission in Yang Lishan's"Identification of Warm Disease",the confirmed case in our hospital was analyzed,and it was found that pathogenic qi entered from nose and mouth,injected into middle energizer,and then distributed in upper and lower energizer.The pathogenic qi is mainly diffused in the middle and upper energizer.Modified Maxing Ganshi decoction has a good effect.

Clinical efficacy of integrated Chinese and western medicine in the treatment of the corona virus disease 2019(COVID-19):A meta-analysis

Objective:To evaluate the clinical efficacy of integrated Chinese and western medicine(ICWM)in the treatment of COVID-19.Methods:Literature retrieval was performed in PubMed,Cochrane Library,EMBASE,Web of science,CNKI,VIP and Wanfang database from inception to November 1,2020.The data extraction and quality assessment were completed by two independent reviewers.Meta-analysis was performed using Review Manager 5.3.Results:30 clinical trials were included with 3379 participants.The meta-analysis showed that there were significant differences in the total effective rate(RR=1.24,95%CI[1.15,1.35];P<0.01),the conversion rate from mild or moderate to severe(RR=0.32,95%CI[0.24,0.44];P<0.01),the mortality(RR=0.52,95%CI[0.30,0.93];P<0.05),the disappearance time of fever(MD=-1.60,95%CI[-1.99,-1.21];P<0.01)and cough(MD=-1.43,95%CI[-1.96,-0.90];P<0.01)and fatigue(MD=-1.44,95%CI[-2.33,-0.55];P<0.01),the rate of CT improvement(RR=1.29,95%CI[1.13,1.47];P<0.01)and the rate of adverse reactions(RR=0.52,95%CI[0.31,0.87];P<0.05)between ICWM and western medicine(WM)alone.While there were no differences between two groups in the cure rate(RR=1.22,95%CI[0.98,1.52];P>0.05)and the disappearance rate of fatigue(RR=1.18,95%CI[0.97,1.45];P>0.05).Conclusion:Meta-analysis results indicated that ICWM in the treatment of COVID-19 can improve clinical efficacy and safety.However,high-quality,large-sample,multi-center RCTs are required to confirm the efficacy of traditional Chinese medicine intervention COVID-19.

Research progress of traditional Chinese medicine in the treatment of breast cancer based on “Binding of Phlegm and Stasis”

Breast cancer is a common malignancy in female,which seriously endangers women’s health.Chinese medicine believed that the incidence of breast cancer is related to“Stagnation of Liver-Qi”and“Phlegm,Disharmony of Thoroughfare and Conception Vessels”,“Stagnation of Qi and Blood Stasis”,constitution and other characteristics.Modern research believed that phlegm is related to abnormal energy metabolism of tumor cells,and stasis is the pathological change of tumor angiogenesis.How to combine tumor angiogenesis and energy replacement abnormality with the theory of“Binding of Phlegm and Stasis”has become a new direction of traditional Chinese medicine anti-tumor research.The drugs of“Activating Blood Circulation”and“Removing Blood Stasis”,“Resolving Phlegm”and“Dispersing Constipation”have a wide range of pharmacological effects and definite curative effect.They have the functions of anti-inflammatory,anti-tumor,anti-pathogenic microorganism and improving the immune ability of the body.In this paper,the effects and mechanisms of phlegm-reducing and stasis dispersing active ingredients and compound preparations in regulating angiogenesis and energy metabolism of breast cancer were reviewed,and the differences in efficacy,targets and pathways of Phlegm-Reducing and Stasis Dispersing drugs were summarized,so as to provide some reference for the research and development of traditional Chinese medicine for breast cancer.