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Osteoporotic proximal humeral fracture (OPHF) is one of the common osteoporotic fractures in the aged, with an incidence only lower than vertebral compression fracture, hip fracture, and distal radius fracture. OPHF, secondary to osteoporosis and characterized by poor bone quality, comminuted fracture pattern, slow healing, and severely impaired shoulder joint function, poses a big challenge to the current clinical diagnosis and treatment. In the field of diagnosis, treatment, and rehabilitation of OPHF, traditional Chinese and Western medicine have accumulated rich experience and evidence from evidence-based medicine and achieved favorable outcomes. However, there is still a lack of guidance from a relevant consensus as to how to integrate the advantages of the two medical systems and achieve the integrated diagnosis and treatment. To promote the diagnosis and treatment of OPHF with integrated traditional Chinese and Western medicine, relevant experts from Orthopedic Expert Committee of Geriatric Branch of Chinese Association of Gerontology and Geriatrics, Youth Osteoporosis Group of Orthopedic Branch of Chinese Medical Association, Osteoporosis Group of Orthopedic Surgeon Branch of Chinese Medical Doctor Association, and Osteoporosis Committee of Shanghai Association of Integrated Traditional Chinese and Western Medicine have been organized to formulate Expert consensus on the diagnosis and treatment of osteoporotic proximal humeral fracture with integrated traditional Chinese and Western medicine ( version 2024) by searching related literatures and based on the evidences from evidence-based medicine. This consensus consists of 13 recommendations about the diagnosis, treatment and rehabilitation of OPHF with integrated traditional Chinese medicine and Western medicine, aimed at standardizing, systematizing, and personalizing the diagnosis and treatment of OPHF with integrated traditional Chinse and Western medicine to improve the patients ′ function.

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Objective:To explore the immune and angiogenesis-related genes in aortic valve stenosis(AS)and potential therapeutic targets, based on bioinformatics and machine learning analysis.Methods:AS data sets from the Gene Expression Omnibus(GEO), immune-related genes from the ImmPort database, and angiogenesis-related genes from the Genecards database and MsigDB were downloaded and combined to determine differentially expressed immune and angiogenesis-related genes(DEGs).Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)functional enrichment analyses were performed.Protein-protein interaction(PPI)was analyzed by using STRING database.The key biomarkers were identified by two machine learning methods including Least Absolute Shrinkage Selection Operator(LASSO)and Support Vector Machine Recursive Feature Elimination(SVM-RFE), validated in training data set and verification data set by receiver operating characteristic curve(ROC), and analyzed by Gene Set Enrichment Analysis(GSEA).The subtypes of immune infiltrating cells were analyzed by CIBERSORT.Based on starBase, miRDB, miRWalk and hTFtarget databases, the mRNA-miRNA-TF was constructed.Finally, Potential therapeutic targets and drugs were analyzed through the CTD database.Results:A total of 90 DEGs related to AS, immune, and angiogenesis were obtained.Enrichment analysis found that DEIRGs were mainly related to immune regulation and cell cycle regulation, such as "leukocyte migration" , "cell chemotaxis" and "cytokine-cytokine receptor interaction" .84 related proteins and 548 interactions were obtained by PPI analysis.Two key biomarkers SecretograninⅡ(SCG2)and Tenascin-C(TNC)were identified by machine learning, which showed high diagnostic value for AS by ROC.SCG2 and TNC are mainly involved in the immune regulation by Enrichment analysis.The infiltration level of macrophage M0 in AS group was significantly higher than that in control group by CIBERSORT analysis.The correlation between macrophage M0 and macrophage M2 and SCG2 was the highest.879 mRNA-miRNA-TF, 253 potential therapeutic agents and 299 relationships were obtained.Conclusions:The key biomarkers, immune characteristics and potential therapeutic targets obtained from the research play a vital role in exploring the pathophysiological progress and new therapeutic strategies of AS.

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Objective To explore the effect of drug-eluting stent (DES) implantation for early non-culprit vessel's revascularization on the prognosis of acute ST-segment elevation myocardial infarction (STEMI) patients presenting with multivessel disease (MVD) after percutaneous coronary intervention (PCI). Methods A total of 212 selected patients, admitted in the First Affiliated Hospital of Chongqing Medical University from Jan. 1, 2016 to Jul. 30, 2018, diagnosed as STEMI with MVD undergoing emergency PCI treatment, were recruited in present single-center retrospective study. According to the treatment strategy, all the subjects were then divided into control group (n=153) and experimental group (n=59). Patients in control group received culprit vessel emergency PCI only, and those in experimental group underwent early non-culprit vessel's DES revascularization (Within 14 days of hospitalization) after culprit vessel's PCI. The incidence of major adverse cardiovascular events (MACE, a composite endpoint of cardiac death, recurrent myocardial infarction, ischemia-driven revascularization and heart failure) and safety end point events within 12 months after PCI were compared between the two groups. The influencing factors for MACE were analyzed by logistic regression. Results The incidence of MACE was significantly lower in treatment group than that in control group 12 months after PCI (5.1% vs. 22.2%, P=0.006). No significant statistical difference existed between the two groups in all-cause mortality (0% vs. 5.1%), malignant angina pectoris (1.7% vs. 7.8%), contrast nephropathy (3.4% vs. 2.6%), gastrointestinal bleeding (0% vs. 5.1%), and stroke (3.4% vs. 0.7%). Logistic regression showed that the control group (only received culprit vessel PCI) and prolonged operation time were the risk factors for MACE. Conclusion Early revascularization of non-culprit vessel is safer than only culprit vessel PCI, can reduce the incidence of MACE, improves the prognosis, and reduces hospitalization rates within the 12 months after PCI in acute STEMI patients with MVD.

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Radiation skin injury is a common and severe adverse event of radiotherapy in patients with head and neck cancer or nasopharyngeal carcinoma, which not only limits the radiation dose of the tumor, but also seriously affects the follow-up treatment and quality of life of the patients. It has become a bottleneck to improve the curative effect of tumor. The occurrence of radiation skin injury is a complex process of the interaction of many factors, which is closely related to the patient's own factors, radiotherapy technology, radiotherapy dose segmentation scheme and the combined regimens of radiotherapy and chemotherapy. Different regimens of radiotherapy and chemotherapy with drugs have effects on the occurrence and development of acute skin injury. There is still a lack of effective prevention and treatment of radiation-induced skin injury. Therefore, it is of great significance to explore its mechanism and radiation skin damage caused by different radiotherapy and chemotherapy regimens. This paper mainly reviews the combined application of concurrent chemoradiotherapy, induction and adjuvant chemotherapy to aggravate skin injury and its related mechanisms.

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Objective@#To investigate the effects of human adipose-derived mesenchymal stem cells (ADSCs) and platelet-rich plasma (PRP) on healing of wounds with full-thickness skin defects in mice.@*Methods@#ADSCs were isolated from the lumbar and abdominal fat donated voluntarily by a healthy woman undergoing liposuction in the Department of Plastic Surgery of Guangzhou General Hospital of Guangzhou Military Area Command, and the cells were cultured and identified. ADSCs of the second passage were used in the following experiments. The venous blood of the volunteer was taken, and PRP was obtained by secondary centrifugation. Thirty-six C57BL/6 mice were divided into simple injury group (n=12), simple ADSCs treatment group (n=12), and ADSCs+ PRP treatment group (n=12) according to the random number table. Each mouse was inflicted with a 1 cm×1 cm wound with full-thickness skin defect on the back. Immediately after injury, the wounds of mice in simple injury group were subcutaneously injected with 1 mL normal saline, the wounds of mice in simple ADSCs treatment group were subcutaneously injected with 1 mL phosphate buffer solution-blended ADSCs suspension (with concentration of 5×105 /mL, the same below), and the wounds of mice in ADSCs+ PRP treatment group were subcutaneously injected with 1 mL mixture of PRP and ADSCs (1∶2 volume ratio). Three mice in each group were taken on post injury day (PID) 3, 5, 7, and 14 to observe the gross condition of wound, and the wound healing rate was calculated. On PID 3, 5, and 7, the non-healing wound tissue and 0.5 cm normal skin tissue around the wound margin were taken after gross observation. The inflammation, re-epithelialization, and angiogenesis of tissue were observed by hematoxylin and eosin staining, and the re-epithelialization rate was calculated. The collagen synthesis of tissue was observed by masson staining. Immunohistochemistry was used to observe the expression of macrophages of tissue samples collected on PID 3 and 5. Data were processed with analysis of variance of factorial design and Least-Significant Difference test.@*Results@#(1) On PID 3, the wounds of mice in ADSCs+ PRP treatment group were with granulation tissue regeneration, redness, and swelling, and the wounds of mice in the other two groups were ruddy and with effusion. On PID 5, the wounds of mice in ADSCs+ PRP treatment group had less redness and swelling, which were dry with obvious scab, and wounds of mice in the other two groups were obviously red and swollen. On PID 7, scab formed basically on wounds of mice in the three groups. On PID 14, the wounds of mice in the three groups basically healed, and their crusts were off. On PID 3, 5, 7, and 14, the wound healing rates of mice in ADSCs+ PRP treatment group were obviously higher than those of the other two groups (P<0.05 or P<0.01). On PID 5 and 7, the wound healing rates of mice in simple ADSCs treatment group were obviously higher than those of simple injury group (P<0.01). (2) On PID 3, granulation tissue regeneration of wounds in ADSCs+ PRP treatment group was more than that in the other two groups. On PID 5, inflammatory reaction of wounds of mice was mild in ADSCs+ PRP treatment group, which was severe in the other two groups. On PID 7, the re-epithelialization process of wounds of mice was almost completed in ADSCs+ PRP treatment group, and the number of new vessels was more in ADSCs+ PRP treatment group than in the other two groups. The migration distance of regenerated epithelia around the wound edge in simple injury group and simple ADSCs treatment group was short. On PID 3, 5, and 7, the re-epithelialization rates of wounds of mice in ADSCs+ PRP treatment group were (37.6±4.5)%, (59.1±1.3)%, and (89.2±4.3)%, respectively, significantly higher than (25.7±1.5)%, (34.5±4.4)%, and (50.8±2.7)% in simple injury group and (29.1±0.8)%, (42.6±2.9)%, and (72.9±3.0)% in simple ADSCs treatment group (P<0.01). On PID 5 and 7, the re-epithelialization rates of wounds of mice in simple ADSCs treatment group were significantly higher than those in simple injury group (P<0.05 or P<0.01). (3) On PID 3 and 5, a quite large number of new collagen fibers appeared in granulation tissue of wounds of ADSCs+ PRP treatment group, while the collagen fibers in the other two groups were less. On PID 7, the granulation tissue of mice in ADSCs+ PRP treatment group decreased, and a large number of new collagen fibers appeared. The collagen fibers in wounds tissue of mice in simple ADSCs treatment group increased, while the collagen fibers deposited in wounds tissue of mice in simple injury group was still less. (4) On PID 3 and 5, the numbers of macrophages in wounds tissue of mice in simple ADSCs treatment group were 4.7±0.6 and 5.3±0.6 respectively, obviously lower than 6.3±0.6 and 7.7±0.6 in injury group (P<0.05 or P<0.01); the numbers of macrophages in wounds tissue of mice in ADSCs+ PRP treatment group were 3.0±1.1 and 2.7±0.5, significantly lower than those in the other two groups (P<0.05 or P<0.01).@*Conclusions@#Human PRP and ADSCs are involved in the early inflammation, metaphase of tissue proliferation, and re-epithelialization and shaping process of late stage of wounds with full-thickness skin defects in mice. The combination of ADSCs and PRP may be a comparatively good combination to improve the speed and quality of wound healing.

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Regenerative rehabilitation medicine is not just the combination of two disciplines of regenerative medicine and rehabilitation medicine but the new fusion of two disciplines, and it represents the development direction of regenerative medicine and rehabilitation medicine. With the improvement of people′s demands for tissue injury or disease recovery, new technology and means should be required, and regenerative rehabilitation medicine will emerge and develop rapidly. It will play a key role in repair, regeneration and rehabilitation of diseases or injuries in patients.

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Objective To retrospectively investigate the disease spectrum of inpatients aged over 65 year and cost constitution in Sichuan Provincial People's Hospital from 2010 to 2014,so as to provide baseline data for further study.Methods The inpatients'disease spectrum and costs were collected from hospital information system.The diseases were classified according to the International Classification of Diseases(ICD-10).The data were analyzed using SPSS 18.0 software.Results The total number of old inpatients was 111,935,and male (55.2 ％) was more than female (44.8 ％).The average age was (74.5 ±6.8)years.The top four systematic diseases of primary diagnosis were circulatory system disease (21.0 ％),respiratory system disease (13.7 ％),digestive system disease (12.7％)and neoplasms (12.1％).The total number of male inpatients was more than the female inpatients.The average cost per capita was increased from (￥)18,778.1 yuan to (￥)23,391.9 yuan since 2010.The proportion of all costs accounted for by drugs in elderly inpatients was decreased from 45.5％ to 38.9％ since 2010.Nosocomial infection was decreased from 3.19％ to 0.16％ since 2010.Conclusions The number of elderly inpatients are more in male than in female in Sichuan Provincial People's Hospital from 2010 to 2014.The most common systematic disease is circulatory system diseases,and followed by respiratory system diseases,digestive system diseases and neoplasms.The proportion of all expenditures accounted for by drugs was declined in five years,while the average cost per capita is increased.

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Objective@#To explore the effects of calcium gluconate and thrombin on the formation of platelet-rich gel (PRG) and the release of bioactive substances in human platelet-rich plasma (PRP) and the clinical significance.@*Methods@#Six healthy blood donors who met the inclusion criteria were recruited in our unit from May to August in 2016. Platelet samples of each donor were collected for preparation of PRP. (1) PRP in the volume of 10 mL was collected from each donor and divided into thrombin activation group (TA, added with 0.5 mL thrombin solution in dose of 100 U/mL) and calcium gluconate activation group (CGA, added with 0.5 mL calcium gluconate solution in dose of 100 g/L) according to the random number table, with 5 mL PRP in each group. Then the PRP of the two groups was activated in water bath at 37 ℃ for 1 h. The formation time of PRG was recorded, and the formation situation of PRG was observed within 1 hour of activation. After being activated for 1 h, one part of PRG was collected to observe the distribution of fibrous protein with HE staining, and another part of PRG was collected to observe platelet ultrastructure under transmission electron microscope (TEM). After being activated for 1 h, the supernatant was collected to determine the content of transforming growth factor β1, platelet-derived growth factor BB (PDGF-BB), vascular endothelial growth factor, basic fibroblast growth factor (bFGF), epidermal growth factor, and insulin-like growth factorⅠby enzyme-linked immunosorbent assay. (2) Another 10 mL PRP from each donor was collected and grouped as above, and the platelet suspension was obtained after two times of centrifugation and resuspension with phosphate buffered saline, respectively. And then they were treated with corresponding activator for 1 h as that in experiment (1). Nanoparticle tracking analyzer was used to detect the concentrations of microvesicles with different diameters and total microvesicles derived from platelet. Data were processed with t test.@*Results@#(1) The formation time of PRG in group TA was (228±40) s, and the PRG volume reached the maximum at this moment. The PRG volume shrunk to the minimum after 30 minutes of activation. The formation time of PRG in group CGA was (690±71) s, and the PRG volume reached the maximum at this moment. After 55 minutes of activation, the PRG volume shrunk to the minimum. The formation time of PRG in group TA was obviously shorter than that in group CGA (t=15.17, P<0.01). (2) HE staining showed that after 1 hour of activation, the red-stained area of fibrous protein in PRG of group TA was large and densely distributed, while that of group CGA was small and loosely distributed. TEM revealed that after 1 hour of activation, the platelets in PRG of group TA were fragmented, while lysing platelet structure, lysing α granule structure, intact α granule structure, and intact dense body structure were observed in PRG of group CGA. (3) The content of PDGF-BB released by PRP in group TA was (7.4±0.8) ng/mL, which was obviously higher than that in group CGA [(4.9±0.5) ng/mL, t=5.41, P<0.01]. The content of bFGF released by PRP in group CGA was (960±151) pg/mL, which was significantly higher than that in group TA [(384±56) pg/mL, t=8.75, P<0.01]. The content of the other 4 growth factors released by PRP in the two groups was close (with t values from 0.11 to 1.97, P values above 0.05). (4) The concentrations of total microvesicles, microvesicles with diameter more than 100 nm, and exosomes with diameter less than or equal to 100 nm derived from platelet in group CGA were (165.8±15.1)×108/mL, (142.4±12.3)×108/mL, and (23.4±2.9)×108/mL respectively, which were significantly higher than those in group TA [(24.7±4.6)×108/mL, (22.6±4.0)×108/mL, and (2.1±0.7)×108/mL, with t values from 17.36 to 22.66, P values below 0.01].@*Conclusions@#Calcium gluconate can slowly activate PRP, resulting in slowly shrunk PRG with high content of bFGF and high concentration of microvesicles, which is suitable for repairing articular cavity and sinus tract wound. Thrombin can rapidly activate PRP, resulting in quickly shrunk PRG with high content of PDGF-BB and a certain concentration of microvesicles, which is suitable for repairing acute trauma.

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Hidradenitis suppurativa is a cutaneous, chronic, recurrent inflammatory disease. Here, we report the case of a 66-year-old man who had hidradenitis suppurativa in the buttocks. He suffered from diabetes mellitus. In the past, he had perianal abscesses. Because of improper treatment of furuncle infections in the buttocks, skin ulcers formed, which worsened and resulted in multiple fistulas. The skin lesion surface was large and the infection was severe. After wound debridement treatment, topical negative pressure and nutritional support were given. After one and a half months, the wound healed with split-thickness skin grafting. In a 2-year follow-up, there was no evidence of hidradenitis suppurativa recurrence.

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Hidradenitis Supurativa/terapia , Terapia de Presión Negativa para Heridas/métodos , Procedimientos de Cirugía Plástica/métodos , Trasplante de Piel/métodos , Anciano , Enfermedad Crónica , Humanos , Masculino

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Objective Recent studies suggest that the red blood cell distribution width ( RDW) may play a role in the diag-nosis and treatment of cardiovascular disease.The aim of this study was to investigate the correlation of red blood cell distribution width (RDW) with cardiovascular events in patients with Acute ST-segment elevation myocardial infarction (ASTEMI) in order to provide the basis for improving the diagnosis level and therapeutic effect. Methods Retrospective study was made on the clinical data of 189 patients with ASTEMI enrolled in Sichuan Provincial People′s Hospital from January 2013 to March 2014.The survival rates of patients with ASTEMI with different RDW were estimated by Kaplan-Meier and compared by Log-rank test and the prognosis factors were inves-tigated by Cox proportional hazard regression model. Results 97 patients′RDW levels were more than 13.7% and 92 patients′RDW levels were less than or equal to 13.7% in 189 ASTEMI patients. The hs-CRP, BNP, LVEF and HDL-C were significantly different be-tween two groups (P65 (HR=2.43, 95%CI:1.09~5.44) and RDW>13.7%(HR=2.20, 95% CI:1.10~4.43) were risk prognostic factors. Conclusion There is a certain correlation between RDW and cardiovascular e-vents in patients with ASTEMI.The ASTEMI patients with high RDW hold higher risk of cardiovascular events and poorer prognosis.

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Objective To observe the effect of δ-opioid receptor on proliferation and migration of human epidermal stem cells (hESCs) in vitro so as to offer treatment theory for skin injury.Methods hESCs from fresh foreskin tissues of normal young volunteers were isolated and cultured by enzyme digestion and differential adherence technique.Immunofluorescent staining was used to determine expression of integrin β1 and cytokeratin 19 (CK19) and flow cytometry was used for cell count.Second generation of cells were cultured for 5 consecutive days with keratinocyte serum-free medium (K-SFM) supplemented with 1 nmol/L (D-Ala2,K-Leu5)-enkephalin in Group A,with K-SFM supplemented with 1 nmol/L naltrindole and 1 nmol/L (D-Ala2,K-Leu5)-enkephalin in Group B,and with isolated K-SFM in Group C.Cellular division and proliferation were detected by MTT method.An in vitro 100 μm scratch-wound model was created on the confluent monolayer cells at 24 hours of incubation.Cells migrating from the wound margin were determined by inverted phase contrast microscope at 24,48,72,and 96 hours after wound formation,while wound closure rate was calculated at 72 hours.Results Primary cultured hESCs presented cobblestone-like shape after adherence growth,Immunofluorescence staining showed positive results for integrin β1 and CK19 and cell purity reached 95.6％.Moreover,MTT findings revealed proliferation of hESCs enhanced significantly in Group A,but lowered in Group B as compared to Group C (P ＜ 0.05).hESCs migrated from the wound margin in all groups at 24 hours.However,more migrated cells were seen in Group A than in Group C and less in Group B than in Group C.Rate of wound closure was (89.5 ±0.7)％ in Group A,(76.1 ±0.3)％ in Group B,and (81.1 ±0.6)％ in Group C at 72 hours,indicating significant differences among groups (P ＜ 0.05).Conclusion Activation of δ-opioid receptor promotes the proliferation and migration of hESCs in vitro and may be implicated in wound healing.

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Objective:To observe influence of trimetazidine on cardiac function in patients With chronic heart failure (CHF).Methods:According to number table method,a total of 70 CHF patients accorded With inclusion standards Were randomly and equally divided into trimetazidine group and routine treatment group.According to patient's condition,routine treatment group received digitalis,diuretics,angiotensin converting enzyme inhibitors etc CHF routine freatment.Trimetazidine group additionally received trimetazidine based on routine treatment.The treat-ment period Was four Weeks.Plasma brain natriuretic peptide (BNP)level Was measured and patients received 6min Walking test (6MWT)before and after treatment.Results:Compared With before treatment,there Was significant decrease in plasma BNP level in tWo groups after treatment (P<0.01),compared With routine treatment group, there Was significant increase in decreasing amplitude of BNP level [(655.89±135.61)pg/ml vs.(715.60±181.22) pg/ml,P<0.05]in trimetazidine group;compared With before treatment,there Was significant increase in 6min Walking distance (6MWD)in tWo groups after treatment (P<0.01),compared With routine treatment group,there Was significant increase in increasing amplitude of 6MWD [(181.46±51.16)m vs.(226.06±65.18)m,P<0.01] in trimetazidine group.Conclusion:Treatment trimetazidine can significantly reduce plasma brain natriuretic peptide level and improve heart function based on routine treatment in patients With heart failure.

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Objective: To study the steroidal saponins from Allii Macrostemonis Bulbus. Methods The silica gel and ODS column chromatographies were used for the isolation and purification of compounds from Allii Macrostemonis Bulbus. Their structures were identified through comparing with references and spectral analyses. Results: Three steroidal saponins were isolated from the 70% ethanol extract from Allii Macrostemonis Bulbus and identified as 5β-spirostane-25(27)-en-3β, 12β-diol-3-O-β-D-glucopyranosyl- (1→2)-β-D-galactopyranoside (1), (25R)-5β-spirostane-3β, 12β-diol-3-O-β-D-glucopyranosyl- (1→2)-β-D-galactopyranoside (2), and 5β-spirostane-25(27)-en-2β, 3β-diol-3-O-β-D-glucopyranosyl- (1→2)-β-D-galactopyranoside (3). Conclusion: Compound 1 is a new compound named macrostemonoside S. Compound 2 is isolated from Allii Macrostemonis Bulbus for the first time.

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Objective To explore the association between late-onset sporadic Parkinson' s disease (PD) and single nucleotide polymorphisms (SNPs) of Ca2+-dependent protease calpain inhibitor calpastatin (CAST) gene in a Chinese Han population.Methods 370 evaluable patients (221 male,149 female) with PD (mean age 65.2 ± 8.5 years) and 390 neurologically healthy controls (208 male,182 female) matched for gender,ethnicity,and area of residence.PD cases were identified from the PD cohort of the Chinese National Consortium on Neurodegenerative Diseases (www.chinapd.cn).A total of 24 tag-SNPs were genotyped capturing 95％ of the genetic variation across the CAST gene.Results There was no association found between any of the polymorphisms and PD in all models tested (co-dominant,dominant-effect and recessive-effect (P ＞ 0.05)).Similarly,none of the common haplotypes was associated with a risk for PD(P ＞ 0.05).Conclusion Results show no significant association between the CAST gene polymorphisms and late onset sporadic PD in the present population.

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The treatment of chronic skin ulcers with exposed bone in the lower extremity is difficult. The development of topical negative pressure (TNP) technology and microsurgical techniques have achieved good clinical results in the repair of such ulcers. Between January 2007 and March 2012, TNP combined with flap transfer was applied to repair lower-limb skin and soft-tissue defects associated with exposed bone in 22 cases at our hospital, and good results were achieved that are reported herein.

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Fracturas Abiertas/cirugía , Terapia de Presión Negativa para Heridas/métodos , Trasplante de Piel/métodos , Traumatismos de los Tejidos Blandos/cirugía , Colgajos Quirúrgicos/irrigación sanguínea , Cicatrización de Heridas/fisiología , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Niño , China , Enfermedad Crónica , Estudios de Cohortes , Terapia Combinada , Desbridamiento/métodos , Femenino , Fracturas Abiertas/diagnóstico , Supervivencia de Injerto , Humanos , Traumatismos de la Pierna/diagnóstico , Traumatismos de la Pierna/cirugía , Úlcera de la Pierna/fisiopatología , Úlcera de la Pierna/cirugía , Masculino , Persona de Mediana Edad , Pronóstico , Estudios Retrospectivos , Medición de Riesgo , Traumatismos de los Tejidos Blandos/diagnóstico , Adulto Joven

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<p><b>OBJECTIVE</b>To investigate the role of C-type natriuretic peptide receptor (NPR-C) and large-conductance calcium-activated potassium channels (BK(Ca)) in brain natriuretic peptide (BNP) induced porcine coronary artery dilation.</p><p><b>METHODS</b>Porcine coronary artery rings were obtained and treated with BNP (10(-6) mol/L), BNP + NPR-C antagonist cANF4-28 (10(-6) mol/L) and BNP + BK(Ca) blocker tetraethylammonium (TEA, 1 mmol/L). The vascular tone experiments were observed on 10 vessel segments. BK(Ca) current density was measured by the whole-cell patch clamp technique.</p><p><b>RESULTS</b>The maximum diastolic rate was similar between BNP group (68.51% ± 11.50%) and cANF4-28 + BNP group (65.67% ± 11.90%, P > 0.05) while significantly reduced in TEA + BNP group (28.87% ± 4.55%, all P < 0.05). When the holding potential was set at +60 mV, the BK(Ca) current density of BNP group was (78.48 ± 5.86) pA/pF, which was significantly higher than control group [(53.84 ± 4.55) pA/pF, P < 0.05], which was equally reduced in the TEA group and TEA + BNP group [(28.80 ± 2.76) pA/pF and (30.60 ± 3.88) pA/pF respectively, all P < 0.05 vs. control group].</p><p><b>CONCLUSION</b>BNP could relax the porcine coronary arterial smooth muscles by increasing BK(Ca) current, and this effect is not mediated by NPR-C.</p>

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Animales , Vasos Coronarios , Fisiología , Canales de Potasio de Gran Conductancia Activados por el Calcio , Fisiología , Péptido Natriurético Encefálico , Farmacología , Técnicas de Placa-Clamp , Receptores del Factor Natriurético Atrial , Fisiología , Porcinos

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<p><b>OBJECTIVE</b>This study was undertaken to observe the change in the local level of angiotensin II (Ang II) and the expression of its corresponding receptors AT1 and AT2 during wound healing, and explore the possible role of Ang II in wound healing .</p><p><b>METHODS</b>A model of full-thickness cutaneous wound was developed on the back of C57/BL6 mice. Specimens were taken from the wound of each mouse on the day 0, 1, 3, 5, 7, 9, 11, 13 and 15 after wounding. The change in the generation of Ang II in wounded tissue during the healing process was detected with ELISA. The proliferation and the apoptosis of cells were detected by bromodeoxyuridine (Brdu) and terminal deoxynucleotidyl transferase mediated deoxyuridine triphosphate nick end labeling (TUNEL) method in wounded skin during the healing process, respectively. The cellular localization and the mRNA level change of Ang II receptors in wounded tissue during healing were detected with immunostaining and RT-PCR.</p><p><b>RESULTS</b>Ang II produced in wounded skin was increased in the first 7 days to reach the peak, and then gradually decreased during wound healing. BrdU labeling index was increased gradually in the first 7 days to reach the peak, and then gradually decreased during wound healing. The number of TUNEL-positive cells was increased slowly in the first 7 days after wounding. The increase in the number of TUNEL-positive cells was more markedly after epithelization of the wound. In normal mice, AT1 and AT2 receptor were found positively expressed in the whole epidermal layer, while positive expression was only found in the endothelial cells of the capillary vessels within the dermal layer, and positive expression was also found in appendages of the skin, i. e. hair follicle, sweat gland and sebaceous gland respectively. Positive staining signal of both AT1 and AT2 receptors were increased in the first 7 days to reach the peak, then gradually decreased. Expression of AT2R was increased again following the epithelization of wound. The result of RT-PCR showed that the expression of both AT1 and AT2 receptors was detectable, and AT1 receptor was increased in the first 7 days to the peak, and then gradually decreased during wound healing, while AT2 receptor expression reached its peak value on day 7, then gradually decreased, and increased again following the epithelization of wound.</p><p><b>CONCLUSIONS</b>These results indicate that Ang II participate in wound repair and related to remolding in the late stage of wound healing through the change in production of angiotensin II and expression of AT1 and AT2 receptors. AT1 receptor might be closely associated with cell proliferation, while AT2 receptor might play a role in cell apoptosis and remolding during wound healing.</p>

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Animales , Masculino , Ratones , Angiotensina II , Genética , Metabolismo , Apoptosis , Proliferación Celular , Ratones Endogámicos C57BL , ARN Mensajero , Genética , Receptores de Angiotensina , Genética , Metabolismo , Piel , Heridas y Lesiones , Metabolismo , Patología , Cicatrización de Heridas , Fisiología

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Objective To explore the possible pathway and regulatory mechanism of dermal fibroblasts' transdifferentiation into myofibroblasts induced by estrogen. Methods Human dermal fibroblasts were divided into six groups (A: control; B: estrogen; C: estrogen + ICI-182780; D: estrogen + SB203580; E: estrogen + PD98059; F: estrogen + SP600125). The cells were collected for RNA extraction and the expression of α-SMA was detected by real time quantitative RT-PCR. Some cells were analyzed by single cell RT-PCR to detect positive expression percentage of α-SMA.Results The expression and positive rate of α-SMA in estrogen group were significantly increased (Group B vs. Group A, 7. 385±0. 246 vs 1. 367±0. 034, P＜0.01) and those in ICI-182780 group and SP600125 group were significantly inhibited (Groups C and F vs. Group B, 4. 619 ±0. 164,2. 409±0. 091 vs 7. 385±0. 246, P＜0. 05). Conclusions In the process of fibroblast transdifferentiation into myofibroblasts induced by estrogen, estrogen β receptor and JNK-MAPK signal transduction pathway may play an important role.

RESUMEN

The cytochromes P450 epoxygenases CYP2J2 synthesize epoxyeicosatrienoic, which regulate endothelial function. The aim of this study was to assess the association between the human CY2J2 gene and myocardial infarction (MI) in a Chinese population using a haplotype-based case-control study. There were 440 Chinese Han MI patients and 440 age-matched control subjects genotyped for three SNPs (rs2271800, rs11572223, and rs14493270) of the human CYP2J2 gene. Haplotypes were constructed and their frequencies compared between the MI patients and the controls. The CC genotype of rs2271800 was found more frequently in the MI group than in the control group (p = 0.004). The frequency of the C-C-G haplotype was significantly higher in MI patients than in control subjects (p < 0.001). The present results indicate that MI is associated with the CC genotype of rs2271800 in the human CYP2J2 gene. The C-C-G haplotype appears to be a useful genetic marker of MI in Chinese Han people.

Asunto(s)

Pueblo Asiatico/genética , Sistema Enzimático del Citocromo P-450/genética , Infarto del Miocardio/genética , Polimorfismo de Nucleótido Simple , Adulto , Anciano , China , Citocromo P-450 CYP2J2 , Femenino , Frecuencia de los Genes , Genotipo , Haplotipos , Humanos , Masculino , Persona de Mediana Edad , Infarto del Miocardio/etnología

RESUMEN

Objective To transduct with human telomerase reverse transcriptase(hTERT) to Schwann cells via electransfection technique to prolong the life span and enhance the proliferative capacity of Schwann cells.Methods The hTERT RNA was derived from esophagus cancer tissue and pcDNA3.1-hTERT vector was built.With electransfection technique, we tmnsfected vector into ADSCs.The PCR,TRAP-PCR, and PI-annexin V were tested to prove the expression of hTERT in ADSCs.Results After transduction the hTERT RNA in Schwann ceils, TRAP-PCR test, PI-annexin V dying and S100 dying was positive.Conclusion Telomerase catalytic subunit(hTERT) is transduct into Schwann cells, and it can to enhance the prolifertative capacity.