1.The Effect of Lactate on the Contractile Force of Ventricular Papillary Muscle and Cellular Action Potential
Zhaoqiang LIU ; Yingjie LIU ; Jitian ZHU ; Qingzhao SHI
Chinese Journal of Tissue Engineering Research 2001;5(7):155-156
Objective To study the effect of lactate of differentconcentration on the action potential of ventricular papillary muscle cell (n=4) and contractile force (n=10).Method Using intracellular microelectrode technique and microtension depicting method.Result The Result showed the effect of lactated solution of a certain comcentration became obvious. After perfused with lactate solution of 4mmol/L,the vilocity maximum decreased significantly (p<0.05) showed the 4mmol/L lactate solution decreased the rate of depolarization: decreased the efficency of Na + channel; lactate solution decreased the contractile force of cardiac muscle. Conclusion The possible mechanism was: Ca+ influx and Na+ - H+ exchange were inhibited, resulted in the elevation of intracellular H+ concentration; through Na+-Ca2+ exchange, Ca2+ efflux decreased resulted in the intracellular Ca2+ decreased resulted in the intracellular Ca2+ overload.
2.Correlation of family environment with quality of life in patients with alcohol-induced mental disorder
Jincai ZHU ; Qingfeng WU ; Aiqun LAI ; Jianxiong XU ; Jitian LI ; Shanna SU ; Xiaoling LI ; Xiuying QIU ; Sufang LIU
Chinese Journal of General Practitioners 2011;10(3):195-197
Fifty five patients with alcohol induced-mental disorder (study group) and 43 local inhabitants without history of alcohol abuse (control group) were surveyed with family environment scale (FES-CV) and generic quality of life inventory-74 (GQOLI-74). The total score and the scores of all dimensions except material life in GQOLI-74 of study group were significantly lower than those of control group(P <0. 05). Compared with control group, the scores in FES of study group were lower for factors of cohesion, expressiveness, active-recreational orientation, moral-religious emphasis and organization in the patient's family, while the scores for conflict and control were higher( P < 0. 05 or P < 0. 01 ). The results indicate that family environment is closely correlated with quality of life in patients with alcohol-induced mental disorder, and family therapy would improve their quality of life.
3.Effect of Chinese Medicine on Signaling Pathways Related to Hepatocellular Carcinoma and Its Potential Mechanism: A Review
Peirong QIU ; Zeshan CHEN ; Wenlin ZHU ; Peichun PENG ; Jitian WU ; Yulian LI ; Xin DENG
Chinese Journal of Experimental Traditional Medical Formulae 2022;28(23):264-272
Hepatocellular carcinoma (HCC), an insidious malignant tumor with high incidence and lethality, poses a major threat to physical and mental health of human beings. The pathological mechanism needs to be further studied. Surgery, radiotherapy, chemotherapy, and targeted drugs are effective but induce many adverse reactions. Traditional Chinese medicine (TCM) has unique advantages and abundant clinical experience in the treatment of HCC. There has been an explosion of research on the pathways, targets, and mechanism of TCM against HCC from the perspective of molecular biology. According to previous research, Chinese medicinals or compound Chinese medicine prescriptions, directly or indirectly prevent the occurrence and progression of HCC through multiple pathways and targets, which is closely related to the pathophysiological processes such as cell proliferation, metastasis, apoptosis, autophagy, inflammatory response, and immune response. This paper summarizes and analyzes research on the action pathways and mechanisms of Chinese medicine against HCC. Specifically, isoliquiritigenin, dendrobium candidum and Yexiazhu compound Ⅱ regulate phosphatidylinositol 3-kinase/protein kinase B (PI3K/Akt) signaling pathway to inhibit the growth, proliferation and metastasis of tumor cells. Toad venom and dioscorea zingiberensis induce and enhance HCC autophagy by modulating mammalian target of rapamycin (mTOR) signaling pathway. Myricetin, asparagus, and Biejiajian Wan regulate mitogen-activated protein kinase (MAPK) signaling pathway to promote HCC cell cycle arrest, inhibit angiogenesis, and induce apoptosis. Polygonum odoratum, tetragonum, and plantainoside modulate nuclear factor-kappa B (NF-κB) to inhibit inflammatory response and HCC metastasis and reduce drug resistance. Quercetin and erigeron breviscapus control the Janus kinase 2/signal transducer and activator of transcription 3 (JAK2/STAT3) signaling pathway to suppress epithelial-mesenchymal transition (EMT) and remodel cytoskeleton. This paper is expected to lay a theoretical basis for the in-depth research on and clinical application of Chinese medicine in the treatment of HCC.