High-Pressure Studies of Trimethylsilane Azide by Raman Scattering and Synchrotron X-ray Diffraction.

We have reported the high-pressure behavior of energetic material trimethylsilane azide ((CH3)3SiN3, TMSiN3) by in situ Raman scattering and synchrotron angle-dispersive X-ray diffraction (ADXRD) measurements in diamond anvil cells with a pressure up to ∼40 GPa at ambient temperature. The analyses of Raman spectra showed two liquid-liquid phase transitions at 0.13 and 7.9 GPa. The XRD results verified that TMSiN3 remained in a liquid state throughout the phase transitions. In the pressure range of 0.13-2.6 GPa, the distortion of the Si-C3 bond and the shortening of the bond between azide group and silicon atom lead to the first phase transition. The second transition is ascribed to the rotation of methyl group at 7.9 GPa. With further compression, the azide groups become increasingly asymmetric, and completely amorphous at 33.8 GPa. This paper is useful to understand the behavior of azide group and the molecular structural evolution of organic azide under high pressure. The unique high-pressure behavior of the azide group in TMSiN3 may be useful for improving in the formation of the polynitrogen compound with azides.

Action mechanism and advantages of mesenchymal stem cells for treating flap ischemia-reperfusion injury / 中国组织工程研究

BACKGROUND:Mesenchymal stem cells are used in flap ischemia-reperfusion injury due to their antioxidant and inflammatory inhibition,and angiogenesis induction. OBJECTIVE:To review the mechanism and latest treatment progress of mesenchymal stem cells in the treatment of flap ischemia-reperfusion injury,and to provide a basis for further theoretical research and clinical rational application. METHODS:We searched the relevant articles indexed in CNKI,WanFang and PubMed databases.Chinese and English search terms were"mesenchymal stem cells;flap ischemia reperfusion injury;conditioned medium;exosomes;oxidative stress;inflammatory reactions;angiogenesis".Relevant literature since 2010 was searched,and 74 articles were finally included after excluding the literature that had little to do with the topic of the article,poor quality and outdated content. RESULTS AND CONCLUSION:(1)Mesenchymal stem cells play significant roles in antioxidation,inhibition of inflammation and induction of angiogenesis and have great potential in the treatment of flap ischemia-reperfusion injury.(2)However,the defects of mesenchymal stem cells themselves and the decline of therapeutic effect in recent years have put the development and application of mesenchymal stem cells into a bottleneck period,and the research on the plasticity of mesenchymal stem cells conditioned medium and its exosomes and mesenchymal stem cells came into being,and the therapeutic effect was significantly better than the use of mesenchymal stem cells alone.(3)Therefore,a more comprehensive understanding of the mechanism of action and the latest treatment progress of mesenchymal stem cells in the treatment of flap ischemia-reperfusion injury is of great significance for the research of mesenchymal stem cells and the treatment of flap ischemia-reperfusion injury.

Analysis of 111 cases of aristolochic acids nephropathy / 药学实践与服务

Objective To analyze the clinical characteristics and regularity of aristolochic acid nephropathy (AAN) induced by drugs containing aristolochic acid. Methods The clinical data of 111 patients with AAN induced by aristolochic acid were reviewed. The clinical features, medication and treatment of AAN were analyzed. Results Among 111 patients, there were more females than males (2.58∶1), 101 cases (90.99%) were over 50 years old； the mean age was (63.70±11.67) years old;the average duration of medication was (8.08±6.94) years. The drugs involved were Guanxinsuhe pill and Longdanxiegan pill in 106 cases (95.50%). Serum creatinine increased in 108 cases, urea nitrogen increased in 106 cases and hemoglobin decreased in 103 cases, most of which were hypogravity urine, mild to moderate proteinuria and occult blood. Ultrasonic examination revealed that the kidneys were damaged to varying degrees. Pathological biopsy of kidney showed renal tubular damage. Most patients had an insidious onset and varying degrees of progression, which were not proportional to the age and the duration of taking the medicine. In clinical, the renal function was progressively damaged, most of which were irreversible and with a poor prognosis. Conclusion Patients with renal impairment differed greatly individually, and the renal damage was not paralleled with the medication duration and dose of drugs containing aristolochic acid.AAN progressed rapidly, and the disease still progressed even after stopping taking drugs containing aristolochic acid. Strengthening pharmacovigilance, implementing early diagnosis and effective intervention could help to reduce the occurrence of AAN and attenuate its development.

Chinese Medicine Intervention in Signaling Pathways Related to Diabetic Ulcer： A Review / 中国实验方剂学杂志

Diabetic ulcer （DU） wound is one of the chronic and serious complications of diabetes characterized by prolonged wound healing， and it is more common in foot and lower extremity ulcers. DU has brought great economic and psychological pressure to patients and seriously affected the quality of life of patients because of its great difficulty in treatment， long treatment process， and high morbidity and mortality. Therefore， how to help the rapid healing of DU wounds， reduce the disability rate and mortality rate， protect limb function， and improve the quality of life is an important topic and hot spot in the field of medical research. The pathogenesis of DU is complex， mainly including microcirculation disorder， peripheral neuropathy， inflammation and infection， and excessive apoptosis of cells， involving physiological processes such as wound inflammation， granulation tissue hyperplasia and re-epithelialization. A large number of previous studies have found that Chinese medicine can regulate phosphatidylinositol 3-kinase/protein kinase B （PI3K/Akt）， Wnt/β-catenin， nuclear factor-κB （NF-κB）， Notch， nuclear factor E2-related factor 2 （Nrf2）， transforming growth factor-β （TGF-β）/Smad， and other signaling pathways， regulate abnormal glucose metabolism， improve microcirculation， inhibit inflammation and oxidative stress， regulate cell proliferation and excessive apoptosis， and promote wound tissue growth to promote the rapid healing of DU wounds under the guidance of treatment based on traditional Chinese medicine （TCM） syndrome differentiation and internal and external treatment. Therefore， this paper reviewed Chinese medicinal monomers or Chinese medicinal compounds in recent years in regulating the above signaling pathways and the expression of key protein molecules and promoting the rapid healing of DU wounds， aiming to provide ideas and a theoretical basis for the in-depth study and clinical application of Chinese medicine in promoting the healing of DU wounds.

Traditional Chinese medicine monomer in the prevention and treatment of flap necrosis by regulating"autophagy" / 中国组织工程研究

BACKGROUND:In recent years,it has been found that some traditional Chinese medicine monomers can alleviate oxidative stress and apoptosis of the skin flap,promote vascular regeneration of the skin flap and prevent skin flap necrosis by activating autophagy. OBJECTIVE:To review the research progress of traditional Chinese medicine monomer regulating autophagy in preventing flap necrosis. METHODS:The Chinese and English key words were"traditional Chinese medicine(TCM),autophagy,skin flaps".The first author searched the relevant articles published in CNKI and PubMed databases from January 2010 to October 2022.A total of 196 articles were retrieved in the preliminary screening and then screened according to the inclusion and exclusion criteria.The quality assessment was conducted by reading the literature titles and abstracts.Finally,55 articles were summarized. RESULTS AND CONCLUSION:(1)The regulation of autophagy is mediated by AMPK/mTOR,PI3K/AKT and other signaling pathways.Activation of autophagy can alleviate the oxidative stress and apoptosis of the flap,promote the regeneration of blood vessels in the flap,and prevent flap necrosis.(2)Terpenoids(Betulinic acid,Andrographolide,Notoginseng Triterpenes,Catalpa),phenolic compounds(Resveratrol,Curcumin,Gastrodin),phenolic acids(Salvianolic acid B)and steroid compounds(Pseudoginsenoside F11)in traditional Chinese medicine monomers can alleviate oxidative stress and apoptosis of skin flap by regulating related signaling pathways to activate autophagy,promote skin flap angiogenesis and promote skin flap survival.(3)Studying the research progress of traditional Chinese medicine monomer to prevent flap necrosis by regulating autophagy can provide a reference and theoretical basis for traditional Chinese medicine to prevent flap necrosis and promote flap healing in the clinic.

Role and mechanism of noncoding RNA in diabetic peripheral neuropathy / 中国组织工程研究

BACKGROUND:Persistent hyperglycemia has been identified as promoting neurovascular dysfunction,leading to irreversible endothelial dysfunction,increased neuronal apoptosis,oxidative stress and inflammation.These changes in combination or alone lead to microvascular and macrovascular lesions as well as progressive neuropathy.Noncoding RNAs may provide a new strategy for understanding the etiology,pathogenesis and treatment of the disease. OBJECTIVE:To review the role and mechanism of noncoding RNAs in the occurrence and development of diabetic peripheral neuropathy by reviewing relevant literature at home and abroad,in order to provide new ideas and approaches for noncoding RNAs in the prevention,diagnosis and treatment of diabetes neuropathy. METHODS:CNKI and PubMed were retrieved for relevant literature published from database inception to 2022.The key words were"noncoding RNA;lncRNA;miRNA;diabetes peripheral neuropathy;expression profile"in Chinese and English,respectively.The retrieved documents were summarized and analyzed,and 61 articles were finally selected for further review. RESULTS AND CONCLUSION:(1)Noncoding RNA plays a key role in the pathophysiological process of diabetic peripheral neuropathy.Among the most widely studied regulatory noncoding RNA species,there are long noncoding RNAs,circular RNAs and microRNAs.(2)Through the regulation of noncoding RNAs,the activation or inhibition of related cell pathways,inflammatory genes and downstream-related cytokines will inhibit cell apoptosis,improve inflammation,and thus change the expression of target genes to participate in the process of diabetic neuralgia.(3)Although many microRNAs and long noncoding RNAs have been found to participate in diabetic peripheral neuropathy,the mechanisms of many noncoding RNAs are unclear,and the same noncoding RNAs may play different roles in different modes.Therefore,it is necessary to further study their action modes in disease etiology and pathology,thereby clarifying their role in the pathogenesis of diabetic peripheral neuropathy.However,the criteria for evaluating noncoding RNA activity have not yet been established,and further research is needed on which specific noncoding RNAs play a dominant regulatory role.(4)MicroRNAs,long noncoding RNAs and their target genes can regulate progressive neuropathy,which are expected to become new targets for the clinical prevention and treatment of diabetic peripheral neuropathy and new biomarkers for the development and prognosis of diabetic peripheral neuropathy.

Improving the strategy of mesenchymal stem cells in treatment of flap ischemia-reperfusion injury / 中国组织工程研究

BACKGROUND:Mesenchymal stem cells have great potential in the treatment of ischemia-reperfusion injury of skin flaps.However,their defects and the decline of their role in the treatment of ischemia-reperfusion injury of skin flaps restrict their wide application. OBJECTIVE:To review the strategies for improving the treatment of ischemia-reperfusion injury of skin flaps with mesenchymal stem cells,and provide a reference for its further theoretical research and clinical application. METHODS:Relevant documents included in CNKI,WanFang and PubMed were searched.The Chinese and English search terms were"mesenchymal stem cell,ischemia-reperfusion adjustment of skin flap,mesenchymal stem cells,stem cells,skin flap,ischemia-reperfusion injury,pretreatment,gene modification,biomaterial packaging,joint application".The relevant documents since 2007 were retrieved,and the documents with little relationship between the research content and the article theme,poor quality and outdated content were eliminated through reading the article,and finally 75 documents were included for summary. RESULTS AND CONCLUSION:(1)Mesenchymal stem cells can inhibit inflammatory reactions,resist oxidative stress and induce angiogenesis,which has great potential in the treatment of skin flap ischemia-reperfusion injury.(2)Although mesenchymal stem cells have shown great potential in the treatment of skin flap ischemia-reperfusion injury,their shortcomings in treatment have limited their widespread clinical application.Through pre-treatment(cytokines,hypoxia,drugs,and other pre-treatment mesenchymal stem cells),gene-modified mesenchymal stem cells,biomaterial encapsulation of mesenchymal stem cells,as well as the combined use of mesenchymal stem cells and other drugs or therapeutic methods,can not only overcome the shortcomings of mesenchymal stem cells in treatment,but also improve their therapeutic effectiveness in skin flap ischemia-reperfusion injury.(3)Therefore,further improving the effectiveness of mesenchymal stem cells in treating skin flap ischemia-reperfusion injury and exploring its therapeutic potential are of great significance for the research of mesenchymal stem cells and the treatment of skin flap ischemia-reperfusion injury.

Chinese Medicine in Intervention in Signaling Pathways Related to Flap Revascularization： A Review / 中国实验方剂学杂志

Flap surgery is an important method to repair large open wounds in trauma and plastic surgery. However， flap necrosis is a common issue. Good blood circulation that provides nutrition is a necessary condition for the survival of the flap. Promoting revascularization， establishing blood circulation， and restoring blood perfusion as soon as possible after flap transplantation is crucial for flap survival. However， revascularization/blood reperfusion can cause flap ischemia-reperfusion injury （FIRI） after flap repair. If FIRI is not treated correctly and timely， it can cause flap necrosis and graft failure eventually. Previous studies have shown that the signaling pathways related to cell proliferation and apoptosis， such as the Notch signaling pathway， mitogen-activated protein kinase （MAPK） signaling pathway， and phosphatidylinositol 3-kinase/protein kinase B （PI3K/Akt） signaling pathway， and inflammation-related pathways， such as nuclear factor E2-related factor 2 （Nrf2） signaling pathway， and nuclear factor-κB （NF-κB） signaling pathway can promote angiogenesis， improve local blood supply， inhibit the production and expression of inflammatory mediators， reduce oxidative stress and apoptosis， relieve ischemia-reperfusion injury （IRI）， and promote rapid healing after flap repair. By consulting a large number of modern medical research literature， this study reveals that both Chinese medicine monomers and Chinese medicine compounds can promote revascularization， restore blood perfusion， and accelerate healing after flap repair by regulating the expression of key protein molecules in the above-mentioned signaling pathways. This study summarized the research status in China and abroad， aiming to provide references for the in-depth study and clinical application of Chinese medicine to promote the healing of skin flaps after repair.

To Explore the Mechanism of Xiaozhongzhitong Mixture in the Treatment of Ischemia-Reperfusion Injury of Skin Flap Based on TMT Proteomics / 世界科学技术-中医药现代化

Objective Tandem Mass Tag(TMT)in vitro quantitative proteomics technology was used to study the mechanism of Xiaozhongzhitong Mixture in the treatment of rat skin flap ischemia-reperfusion injury(FIRI).Methods Thirty SD rats were randomly divided into a normal group,a model group,and a Xiaozhongzhitong mixture group(Xiaozhong group),with 10 rats in each group.After intraperitoneal anesthesia,the model group and Xiaozhong group were completely freed with a pedicled skin flap of about 5 cm*6 cm in size on the back to simulate FIRI;the Xiaozhong group was given Xiaozhongzhitong Mixture(1.8 mL·kg-1)by gavage,once a day,the normal group and the model group were given normal saline(1.8 mL·kg-1)by gavage,once a day,and the rats in the three groups were continuously gavaged for 7 days;after 7 days,the dorsal skin flaps of the rats were collected for TMT proteomics analysis,screen out the differential proteins,perform Gene Ontology(GO)enrichment analysis,pathway enrichment(KEGG)analysis,common differential protein analysis,and establish Protein-Protein Interaction(PPI)network analysis.Results In this experiment,a total of 5005 proteins were screened by protein quantification,of which 4996 proteins were identified,and 141 up-regulated and 132 down-regulated differentially expressed proteins were screened out between the detumescence group/model group.GO enrichment analysis found that the differentially expressed proteins were mainly involved in molecular mechanisms such as organism cell metabolism,occurrence and combination of cellular components,catabolism,organelle formation,mitochondria formation,intracellular substance catalysis,molecular binding,hydrolase activation,and nucleotide regulation.KEGG pathway analysis found that the differentially expressed proteins were mainly involved in signaling pathways such as organismal cell metabolism,ribosome transcription and translation,proteasome system,and cell cycle.PPI analysis found that the differentially expressed co-expressed proteins Mrpl32,Psma2,Mrpl34,Psma4,Psmb1,and Srp9 were located at key nodes of the interaction network.Conclusion The treatment of FIRI with Xiaozhongzhitong Mixture may be related to the mitochondrial ribosome-related signaling pathway and the 20S proteasome system signaling pathway,among which the differential proteins Mrpl32,Psma2,Mrpl34,Psma4 and Psmb1 may be the key targets of treatment.

Effect of Xiaozhongzhitong Mixture on ischemia-reperfusion injury of rat skin flaps and p38MAPK-PPARγ/NF-κB signaling pathway / 西安交通大学学报(医学版)

【Objective】 To observe the effect of Xiaozhongzhitong Mixture on ischemia-reperfusion injury of rat skin flaps and p38MAPK-PPARγ/NF-κB signaling pathway. 【Methods】 After flap operation, the survival of rat back flaps and flap survival rate were observed. HE staining, TUNEL staining, and qRT-PCR were used to detect the degree of nuclear destruction, as well as the distribution characteristics and mRNA expression levels of p38MAPK, PPARγ, and Nf-κB in vascular endothelial cells of rat flaps, respectively. 【Results】 The flap survival area in sham operation group was the largest, and it was the smallest in model control group and PPARγ inhibitor group. HE staining and TUNEL staining results showed that the flap tissue cells of rats in model control group and PPARγ inhibitor group were severely damaged and obvious apoptotic cells were seen. In model group, rats’ skin flap tissue cells were arranged in a single layer, and the nucleus was intact and clear. qRT-PCR experiment results showed that compared with model group, the expressions of p38MAPK and Nf-κb in the flap tissue of rats in Xiaozhong Zhicong Mixture group were inhibited (P<0.05), while the expression of PPARγ was increased (P<0.05). When the blocker was added, the expressions of p38MAPK, NF-κB and PPARγ in the flap tissue were further suppressed. 【Conclusion】 Xiaozhongzhitong Mixture can alleviate the infiltration of inflammatory cells in the rat model of skin flap ischemia-reperfusion injury, reduce inflammation and the production of apoptotic cells, thereby alleviating the ischemia-reperfusion injury of skin flaps and promoting the survival of the flaps. The mechanism may be related to the inhibition of p38MAPK-PPARγ/NF-κB signaling pathway.

Chinese Medicine Intervenes in NLRP3 Inflammasome in Treatment of Bone and Joint Diseases： A Review / 中国实验方剂学杂志

The prevalence of osteoporosis， osteoarthritis， gouty arthritis， rheumatoid arthritis， and intervertebral disc degeneration is increasing year by year with the growing number of elderly people， and the common clinical manifestations of these diseases include severe pain in different areas， which seriously affects the daily life of the patients. Therefore， how to relieve the pain and reduce the prevalence of bone and joint diseases and improve the quality of life of the patients is a hot spot in the medical field. Studies have confirmed that NOD-like receptor family， pyrin domain-containing protein 3 （NLRP3） inflammasomes， as pattern recognition receptors， are involved in the inflammation， chondrocyte proliferation， osteoblast and osteoclast differentiation， intervertebral disc cell inflammation and scorching， extracellular matrix degradation and apoptosis， mitochondrial dysfunction， endoplasmic reticulum stress， and reactive oxygen species damage， demonstrating close link with the development of bone and joint diseases. Chinese medicine has a long history and demonstrates remarkable therapeutic effects in the treatment of bone and joint diseases. It can mitigate the pathological changes of bone and joint diseases by inhibiting NLRP3 inflammasomes to alleviate the pain， playing a role in preventing and treating these diseases. Therefore， this paper briefly describes the relationship between NLRP3 inflammasomes and the development of bone and joint diseases by reviewing the latest research progress at home and abroad. We summarize the latest studies about the active components， extracts， and compound prescriptions of Chinese medicines in the treatment of bone and joint diseases via regulating NLRP3 inflammasomes. This review is expected to offer new insights into the in-depth research on the pathogenesis and drug treatment of bone and joint diseases and provide a basis for the clinical application of Chinese medicine in the prevention and treatment of such diseases.

Chinese Herbal Medicines Intervene in Signaling Pathways Associated with Diabetic Neuropathic Pain： A Review / 中国实验方剂学杂志

Diabetic neuropathic pain （DNP） is one of the common complications of diabetic peripheral neuropathy， which is difficult to be cured. The clinical manifestations of DNP include reduced pain threshold， neuropathic pain in extremities， and abnormal pain. Studies have demonstrated that nuclear factor-kappa B （NF-κB）， mitogen-activated protein kinase （MAPK）， Toll-like receptor 4 （TLR4）， nuclear factor erythroid 2-related factor 2 （Nrf2）， and phosphatidylinositol 3-kinase （PI3K）/protein kinase B （Akt） signaling pathways are involved in the treatment of DNP by inhibiting the activation and release of inflammatory cytokines ［e.g.， tumor necrosis factor-alpha （TNF-α） and interleukin （IL）］， regulating inflammation-mediating factors ［e.g.， reactive oxygen （ROS）， inducible nitric oxide synthase （iNOS）， cyclooxygenase （COX-2）， and NF-κB inhibitor （IκB）］， suppressing neurogenic inflammation， destroying the persistent damage of peripheral nerves， and repairing damaged peripheral nerves. The literature of modern medical research has demonstrated that the treatment of DNP with Chinese herbal medicines is associated with the signaling pathways above. They can treat DNP by regulating the expression of key proteins in the signaling pathways to control neurogenic inflammation and repair diabetic peripheral neuropathic damage. By summarizing the available studies， this review aims to provide a reference for the in-depth research on Chinese herbal medicines in the treatment of DNP and give new insights into the protection of diabetic peripheral nerves and the treatment of DNP with Chinese herbal medicines.

Risk factor analysis and predictors assessment for postoperative delirium in liver transplantation / 器官移植

Objective To analyze the risk factors and predictors related to postoperative delirium(POD) in liver transplantation. Methods The clinical data of 232 liver transplant recipients were retrospectively analyzed. Recipients were assigned to POD group (n=60) and non-POD (n=172) group according to the presence of POD. The intra- and post-operative conditions were compared between the two groups of liver transplant recipients. The risk factors for occurrence of POD in liver transplant recipients were analyzed using multifactorial analysis. And the value of predicting the occurrence of POD in liver transplant recipients according to the risk factors were assessed. Results The incidence of POD in liver transplant recipients was 25.9%. The operation time and anhepatic phase in the POD group were longer than those in the non-POD group. Intraoperative infusion of erythrocyte, infusion of cryoprecipitate, and lactic acid level were higher than those in the non-POD group (all P < 0.05). The levels of postoperative alanine aminotransferase (ALT), aspartate aminotransferase (AST), prothrombin time international normalized ratio (PT-INR), and plasma fibrinogen in the POD group were significantly higher than those in the non-POD group (all P < 0.05). Preoperative hepatic encephalopathy, elevated blood ammonia, high score of model for end-stage liver disease (MELD), elevated postoperative AST level and long intraoperative anhepatic phase were the independent risk factors for POD in liver transplant recipients (all P < 0.05). Preoperative elevated blood ammonia and high MELD score showed profound value in predicting the occurrence of POD in liver transplant recipients, with best cut-off values of 42.6 μmol/L and 18 points, sensitivity of 0.650 and 0.767 as well as specificity of 0.826 and 0.727, respectively. Conclusions The incidence of POD is high in liver transplant recipients. Preoperative hepatic encephalopathy, elevated blood ammonia, high MELD score, elevated postoperative AST level, and long intraoperative anhepatic phase are independent risk factors for liver transplant POD. Preoperative elevated blood ammonia and high MELD score are predictors of POD in transplant recipients.

Clinical efficacy of percutaneous minimally invasive anchorage suture in repair of acute closed Achilles tendon rupture / 中华创伤杂志

Objective To investigate the clinical efficacy of percutaneous minimally invasive anchorage in the treatment of acute closed rupture of Achilles tendon. Methods A retrospective casecontrol study was conducted on the clinical data of 32 patients (16 cases on the left side and 16 cases on the right side) with acute closed Achilles tendon rupture treated from January 2015 to January 2017. There were 27 males and five females, aged 24-67 years (mean, 40.8 years). The patients were divided into treatment group which adopted percutaneous minimally invasive combined with anchor suture and control group which used simple minimally invasive suture, with 16 cases in each group. The operation time, hospitalization time, sural nerve injury, single foot heel raise at 3 months and 6 months, difference of calf circumference on the rupture surface between the affected side and healthy side at 6 months, ankle back foot score scale (AOFAS), and infection at 6 months were recorded. Results All patients were followed up for average 8.9 months (range, 6-12 months). In treatment group, the operation time was (35.75 ±3.10) minutes and hospitalization time was (8.38±1.62) days. The AOFAS score was(92.12 ±5.86)points. The result of single foot heel raise was positive in one case at 3 months and in 0 case at 6 months. The difference of calf circumference on the rupture surface between the affected side and healthy side at 6 months was (2.23 ±0.97)cm. In the control group, the operation time was (33.43± 3.89)minutes and hospitalization time was (8.50±1.75)days. The AOFAS score was (91.00 ±7.15) points at 6 months. The result of single foot heel raise was positive in eight cases at 3 months and in 0 case at 6 months. The difference of calf circumference on the rupture surface between the affected side and healthy side at 6 months was (1.64 ±2.34) cm. There were no significant differences between the two groups in operation time, hospitalization time, the AOFAS score at 6 months, and the results of single foot heel raise at 6 months(P ＞0.05). Treatment group had better results than control group in terms of the difference of calf circumference on the rupture surface between the affected side and healthy side at 6 months as well as the result of single foot heel raise at 3 months (P ＜ 0.05). No infection and sural nerve injury were found in either group. Conclusion The repair of Achilles tendon rupture by percutaneous minimally invasive anchor technique can help patients achieve heel raise early, obtain better muscle capacity, and return to work earlier.

Analysis of colonoscopy screening among high risk urban people of colon cancer in Chongqing Nan'an / 重庆医学

Objective To understand the screening results and positive lesion situation of colonoscopy screening among high risk urban population of colon cancer in Chongqing Nan'an District to provide a basis for the community heath guidance.Methods The high risk subjects of colon cancer screened according to the item of the Early Diagnosis and Early Treatment of China Urban Cancer and in our center for completing colonoscopy screening during 2013-2016 were collected and analyzed on the positive rates of various lesions.Results A total of 435 subjects were included,141 positive cases were found with the total positive rate of 32.41％ (141/435),in which 75 cases were male positive with the positive rate of 47.47％ (75/158),and 66 cases were female positive with the positive rate of 23.83 ％ (66/277),the polyps detective rate was 28.27 ％ (123/435),tumor-like lesion detective rate was 7.59％(33/435),the adenocarcinoma detection rate was 0.46％ (2/435);the total positive rate of male was higher than that of female(x2 =25.669,P＜0.01).Conclusion The sequential screening mode in which the high risk population preliminarily screened out by community then performs colonoscopy examination has an important significance for discovering the intestinal tract lesion.

Effect of nursing intervention on children in department of ophthalmology / 中国现代医生

Objective To investigate the clinical effect of the implementation of individualized nursing care on children in department of ophthalmology. Methods The control group was given routine nursing measures and research group was given the personalized nursing measures on the basis of conventional care. Psychological negative mood changes, complications, the child's family satisfaction to nursing before and after nursing were recorded and analyzed. Results The research group showed total effective rate ( 90 . 32%) , which was slightly higher than that in the control group (87.10%), there was no statistically significant difference between the two groups(P>0.05). The complication rate in research group was 9.68%, which was significantly lower than that in the control group(22.58%). Parameters such as psychological negative emotions and family satisfaction with nursing in research group were much better than that in control group.(P<0.05). Conclusion Combination of routine nursing with personalized nursing intervention to the chil-dren in department of ophthalmology can significantly reduce the incidence of complications, improve the negative mood and the child's family satisfaction with nursing work as well as maintain good relationship between nurse and pa-tient.

Reproducibility of a portable spirometer based on differential pressure sensor / 中国医疗器械杂志

<p><b>OBJECTIVE</b>Assessing the reproducibility of a portable spirometer, including reproducibility of inter-observer and day-today.</p><p><b>METHODS</b>Lung ventilation function was performed in 22 healthy volunteers by two observers on the same day and repeated by the first observer after 24h.</p><p><b>RESULTS</b>The inter-observer and day-to-day intra-class correlation coefficients are all higher than 0.75. There are no significant difference between each other. Bland-Altman chart shows good limits of agreement between inter-observer and day-to-day, only scattered data are outside of the limits of agreement.</p><p><b>CONCLUSIONS</b>The portable spirometer shows good inter-observer and day-to-day reproducibility, and can be used for testing lung function in clinical.</p>

Effect of interleukin-17 and T helper cell 17 on acute heart allograft rejection in mice / 中南大学学报(医学版)

OBJECTIVE@#To investigate the role of T helper cell 17(Th17) cells and their cytokines IL-17 in heart allograft rejection in mice.@*METHODS@#The heart transplantation models were randomly divided into 2 groups: a allograft group (n=12) and an isograft group (n=12).On the post-operative day (POD) 3 and 7, serum IL-17 level was tested by enzyme-linked immunosorbent assay, and Th17 cells in heart grafts were measured by flow cytometry. The heart grafts were harvested and saved in 10% formalin, and then embedded in paraffin.@*RESULTS@#Compared with the iso-graft group, the allograft group had a higher serum level of IL-17 on POD3 and POD7 (P<0.05), and the level of IL-17 was higher on POD7 than that on POD3 (P<0.05). The allograft group had more Th17 cells infiltrating in grafts on POD3 and POD7 (P<0.05) and there were more Th17 cells infiltrating on POD7 than that on POD3 (P<0.05). Histological examination showed that the prolongation of post transplantation time resulted in more rejection pathological changes.@*CONCLUSION@#Th17 cells may play an important role in the development of heart transplant rejection. IL-17 may serve as a predictive parameter for allograft rejection in the future.

Mouse model of orthotopic small bowel transplantation / 中南大学学报(医学版)

ObjectiveTo investigate the surgical procedures of orthotopic small bowel transplantation (SBT) model in mice to study the function and rejection of SBT.MethodsWe established a mouse SBT allograft model as follows: the donor portal vein was anastomosed end by side with the recipient inferior vena cava; the donor superior mesenteric artery with aorta patch was anastomosed end by side with recipient abdominal aorta.After an appropriate length of the recipient's small bowel was removed,the donor's small bowel and the recipient's small bowel were end-to-end anastomosed discontinuously.The mice were fasted for 4 d after the operation,free access to water and subcutaneously injection of 2 mL of 5％ glucose saline twice daily.Operation success was regarded as survival for more than 5 d.There is no antibiotic and immunosuppressor.ResultsA total of 30 transplantations were done,the 5 d survival rate was 60％ ( 18/30),and 12 died within 5 d.Among the dead recipients,5 died of arterial anastomotic stenosis and anastomotic thrombosis,2 of hemorrhagic shock caused by anastomotic bleeding,and the other 5 of intra-abdominal infection caused by postoperative intestinal fistula.The donors' operative time was (40 ± 4.5 ) min,warm ischemia time was about 0.5 min,donor preparation time was about 3 min,and cold preservation time was (30 ±7.5) min.The recipients' operative time was (95 ±8.0) min,among which,the abdominal aorta and inferior vena cava clamping time was ( 38 ± 3.5 ) min,the venous anastomotic time was (10 ±2.0) min and the arterial anastomotic time was (15 ± 3.0) min.The mean intraoperative blood loss of the surviving recipient mice was about 0.2 mL.ConclusionHigh quality vascular anastomosis,and rehydration of donors and recipients are crucial factors for improving the success rate of SBT.

IL-17 in the early diagnosis of acute renal allograft rejection in mice / 中南大学学报(医学版)

ObjectiveTo investigate the expression of T helper (Th) 17 cells and the related interleukin 17 (IL-17) in acute renal allograft rejection in mice and its significance.Methods We established a mouse renal allograft model,in which mice were randomly divided into a renal isograft group and an acute renal allograft rejection group.Three and 7 d after the transplantation,the serum interferon (IFN)-γand IL-17 levels in the mice were determined by enzyme-linked immunosorbent assay,the percentage of Th1 and Th17 cells in the total kidney-infiltrating lymphocytes was investigated by flow cytometry,and the transplanted kidney species were given routine pathological examination after fixation with 10％ formalin.ResultsCompared with the isograft group,the allograft mice showed a significantly higher content of IL-17 (P ＜0.05 ) but not IFN-γ in the serum 3 d after transplantation,and showed significantly higher serum IL-17 and IFN-γcontents 7 d after transplantation (P ＜ 0.05 ).Also,compared with the isograft group,the allograft mice exhibited significantly higher percentage of Th1 and Th17 cells on both day 3 and day 7 ( P ＜ 0.05 ).In the allograft group,the contents of serum IFN-γand IL-17 and the percentage of Th1 and Th17 cells were significantly higher on day 7 than on day 3 (P ＜ 0.05 ).Routine pathological examination indicated that,as time passed,the allograft mice showed gradually stronger rejection responses.ConclusionTh17 cells might play an important role in the development of acute renal allograft rejection,and IL-17 can be used as an early indicator of acute rejection.