To characterize the CD45RA+and CD45RO+T lymphocyte subsets in the peripheral blood of patients with cGVHD induced by allogeneic haematopoietic stem cell transplantation ( allo-HSCT ) and to explore their relations with the disease.Methods:The peripheral blood was collected from 64 patients after allo-HSCT,including 21 non-cGVHD patients,15 light grade cGVHD patients,18 mild grade cGVHD patients and 10 severe grade cGVHD patients,then CD4+CD45RA+,CD4+CD45RO+, CD8+CD45RA+and CD8+CD45RO+T lymphocyte subsets were detected by flow cytometry ( FCM).Results: Compared with the control,the percent of CD4+CD45RA+T lymphocyte in patients with light,mild and severe grade cGVHD decreased markedly (P<0.05),the percent of CD4+CD45RO+T lymphocyte increased markedly (P<0.05).But there were not obviously change in the patient with different grade cGVHD.The percent of CD8+CD45RA+,CD8+CD45RO+T lymphocyte did not change obviously.Conclusion:CD4+CD45RA+and CD4+CD45RO+may play an important role in the pathogenesis of cGVHD.

Objective To summarize the nursing points for patients with primary hepatocellular carcinoma (HCC) who are receiving CT-guided percutaneous microwave ablation treatment. Methods A total of 77 HCC patients were enrolled in this study. CT-guided percutaneous microwave ablation treatment was carried out in all patients. High quality perioperative nursing care was implemented, and the adverse reactions were analyzed and summarized. Results CT-guided percutaneous microwave ablation was successfully accomplished in all the 77 cases. After the treatment, different degrees of pain occurred in 29 cases, liver function damage was detected in 6 cases, and pneumothorax was seen in one case. After active treatment and nursing, the clinical conditions were effectively controlled in all patients. No death occurred in perioperative period. Conclusion With the help of sufficient preoperative preparation, close intraoperative cooperation and postoperative effective treatment and nursing, the clinical condition is significantly improved, the complications have been effectively prevented and reduced, and the patient’s quality of life is also improved.

Objective To analyze the endemic situation of schistosomiasis after its interruption of transmission in Xiuzhou District,Jiaxing City,Zhejiang Province,so as to provide the references for future surveillance work. Methods The data of schistosomiasis and Oncomelania hupensis snails in Xiuzhou District were collected and analyzed statistically. Results From 1994 to 2015,totally 975 village?times were investigated for O. hupensis snails,and the accumulated area of 4 385.31 hm2 was surveyed. Twenty former snail sites were reoccurring,with an area of 32.61 hm2. An area of 57.71 hm2 was supplied with snail eradication measures. Totally 11 941 snails were dissected and no schistosome infected snails were found. The serum and stool tests were performed to 221 794 and 3 731 residents respectively,and no local infection cases but four imported cases were found. Conclusion The endemic situation of schistosomiasis in Xiuzhou District is stable after the transmission was interrupt?ed. However,there are imported schistosomiasis cases,and therefore,the prevention of imported infection source is the focus of surveillance work.

Objective To investigate the peri-nasopharyngeal invasion patterns of nasopharyngeal carcinoma (NPC) on MRI and its relationship with tumor staging. Methods One thousand five hundred and seventy-three patients with newly diagnosed NPC which were histo-pathologically proved were retrospectively studied. The MRI manifestations and invasion patterns of the NPCs were elevated according to the 2008 Tstaging system of NPC. Z test was used to analyze the rate of adjacent structures invasion in NPCs. Results The structures invaded by NPCs included pharyngobasilar fascia in 1299 cases (82. 58% ); parapharyngeal space, 1090 ( 69. 29% ); nasal cavities, 304 ( 19. 33% ); oropharynx, 49 ( 3. 12% ); carotid space,514(32. 68% ); medial pterygoid muscle, 661 (42. 02% ); lateral pterygoid muscle, 210( 13. 35% ); skull base bones, 943(59. 95% ); cranial nerves, 630(40. 05% ) and paranasal sinuses, 242 ( 15.38% ). The T-stage distribution was T1, 242 cases ( 15.38% ); T2, 288 ( 18. 31% ); T3, 410 (26. 06% ) and T4,633 (40. 24% ). Among the cases with nasal cavities invasion, 90. 46% (275/304)showed the involvement of the structures seen in T3 or T4 stage, which was found in all cases with oropharynx invasion. In addition,69. 14% (457/661) of cases with medial pterygoid muscle invasion and 92. 15% (223/242) of cases with paranasal sinuses invasion showed the involvement of structures seen in T4 stage. As for the invasion patterns of NPC, the lateral invasion of pharyngobasilar fascia was more frequent than upward invasion of skull base (Z = 14. 025, P ＜ 0. 01 ) and downward invasion of oropharynx ( Z = 45.032, P ＜ 0. 01 ), and the downward invasion of oropharynx was less frequent than upward invasion of skull base ( Z = 34. 301, P ＜ 0. 01 ) and forward invasion of nasal cavities ( Z = 14. 404, P ＜ 0. 01 ). Conclusion NPC has a predilection of lateral invasion rather than upward and downward invasion, and its upward and forward invasion are more common than downward invasion.

BACKGROUND:Endogenous neurogenesis and exogenous stem cell transplantation in the brain show great therapeutic potential for neurological diseases including ischemic stroke,repairing and replacing lost neurons,promoting synaptic remodeling,and inhibiting apoptosis.Traditional Chinese medicine and compound therapy for supplementing qi,activating blood circulation and inducing resuscitation for the treatment of neurological dysfunction after ischemia have certain advantages,targeting nerve repair through a variety of ways,including promoting endogenous neurogenesis and exogenous stem cell survival,proliferation,homing,and inducing neuronal differentiation. OBJECTIVE:To summarize the mechanism of traditional Chinese medicine and compound for supplementing qi,activating blood circulation and inducing resuscitation to promote nerve repair in the acute phase of ischemic stroke,in order to provide a reference for the research and treatment of new drugs in ischemic stroke. METHODS:The articles from CNKI and PubMed databases about traditional Chinese medicine and compound for supplementing qi,activating blood circulation and inducing resuscitation in promotion of nerve repair in the acute phase of ischemic stroke from 2010 to 2022 were searched,with"supplementing qi and activating blood circulation;inducing resuscitation;traditional Chinese medicine(TCM);compounds;ischemic stroke;nerve repair;stem cells"as Chinese and English search terms.After excluding old and duplicate views,the retrieved literature was analyzed and collated,and a total of 124 articles were included for analysis. RESULTS AND CONCLUSION:(1)The definition of stem cells,ischemic stroke and the nerve repair pathway in the acute phase of ischemic stroke were sorted out.(2)The mechanism of action of traditional Chinese medicine and compound for supplementing qi,activating blood circulation and inducing resuscitation to promote nerve repair in the acute phase of ischemic stroke was summarized,mainly including promoting stem cell proliferation,improving stem cell viability and survival rate,promoting nerve cell homing,inducing stem cell differentiation to neurons,inhibiting apoptosis of nerve cells,promoting axon regeneration,regulating angiogenesis and remodeling,improving the level of neurotrophic factors and repairing the integrity of the blood-brain barrier.(3)Through the existing research,the relevant factors and signaling pathways of traditional Chinese medicines and compounds for supplementing qi,activating blood circulation and inducing resuscitation to promote nerve repair in the acute phase of ischemic stroke were summarized,such as Nestin protein expression,DCX protein expression,brain-derived neurotrophic factor,vascular endothelial growth factor and Wnt/β-catenin signaling pathway,Notch signaling pathway,PI3k/Akt signaling pathway,BDNF/TrkB signaling pathway and ERK/MAPK signaling pathway.It provides a relevant reference for future research on ischemic stroke-specific drugs and new clinical treatment methods.

BACKGROUND:The aging of mesenchymal stem cells is one of the main causes of aging-related diseases,and seriously affects its clinical application.Traditional Chinese medicine has a good anti-aging effect,and it can inhibit the aging of mesenchymal stem cells to promote its application in tissue engineering and prevent and treat aging-related diseases. OBJECTIVE:To review the effect and mechanism of traditional Chinese medicine on inhibiting the aging of mesenchymal stem cells. METHODS:We searched CNKI and PubMed for the literature on inhibiting mesenchymal stem cell aging with traditional Chinese medicine from 2012 to 2022.The keywords were"traditional Chinese medicine,mesenchymal stem cells(MSCs),aging"in Chinese and English,respectively.Finally,92 articles were included for further review. RESULTS AND CONCLUSION:(1)We summarized five main mechanisms of the aging of mesenchymal stem cells:DNA damage,telomere shortening,oxidative stress,autophagy disorder and mitochondrial dysfunction.(2)This paper reviewed the phenotypic characteristics of senescent mesenchymal stem cells,including increases in cell volume,decreases in proliferation and multi-directional differentiation,increases in β-galactosidase activity,and activation of p21 and p16 pathways,and so on.(3)We summarized the main mechanisms of Chinese medicine inhibiting the senescence of mesenchymal stem cells at present,including inhibiting the activation of the Wnt pathway,inhibiting the production of mitochondrial reactive oxygen species,promoting the silencing of information regulator factor 2 homolog 1,phosphatidylinositol 3-kinase/protein kinase B,adenosine 5'-monophosphate-activated protein kinase and nuclear factor E2 related factor 2 pathway activation,and promoting the expression of telomerase reverse transcriptase.(4)At present,bone marrow mesenchymal stem cells are the most widely studied in the research of traditional Chinese medicine to inhibit the aging of bone marrow mesenchymal stem cells,and the effect is better.(5)Zuogui Wan,Bushen Tiaogan Formula,resveratrol,Astragalus membranaceus and other traditional Chinese medicines can prevent and treat osteoporosis by promoting the proliferation and osteogenic differentiation of aging mesenchymal stem cells.However,the mechanism of Chinese medicine in improving the paracrine function of mesenchymal stem cells and preventing other aging-related diseases by inhibiting the aging of mesenchymal stem cells needs to be further explored.