Objective To investigate the effect of E2 signaling in myofibers on muscular macrophage efferocytosis in mice with cardiotoxin-induced acute skeletal muscle injury.Methods Female wild-type C57BL/6 mice with and without ovariectomy and male C57BL/6 mice were given a CTX injection into the anterior tibial muscle to induce acute muscle injury,followed by intramuscular injection of β-estradiol(E2)or 4-hydroxytamoxifen(4-OHT).The changes in serum E2 of the mice were detected using ELISA,and the number,phenotypes,and efferocytosis of the macrophages in the inflammatory exudates and myofiber regeneration and repair were evaluated using immunofluorescence staining and flow cytometry.C2C12 cells were induced to differentiate into mature myotubes,which were treated with IFN-γ for 24 before treatment with β-Estradiol or 4-OHT.The treated myotubes were co-cultured with mouse peritoneal macrophages in a 1:2 ratio,followed by addition of PKH67-labeled apoptotic mouse mononuclear spleen cells induced by UV irradiation,and macrophage efferocytosis was observed using immunofluorescence staining and flow cytometry.Results Compared with the control mice,the female mice with ovariectomy showed significantly increased mononuclear macrophages in the inflammatory exudates,with increased M1 cell percentage,reduced M2 cell percentage and macrophage efferocytosis in the injured muscle,and obviously delayed myofiber regeneration and repair.In the cell co-culture systems,treatment of the myotubes with β-estradiol significantly increased the number and proportion of M2 macrophages and macrophage efferocytosis,while 4-OHT treatment resulted in the opposite changes.Conclusion In injured mouse skeletal muscles,myofiber E2 signaling promotes M1 to M2 transition to increase macrophage efferocytosis,thereby relieving inflammation and promoting muscle regeneration and repair.

Objective To investigate the effect of E2 signaling in myofibers on muscular macrophage efferocytosis in mice with cardiotoxin-induced acute skeletal muscle injury.Methods Female wild-type C57BL/6 mice with and without ovariectomy and male C57BL/6 mice were given a CTX injection into the anterior tibial muscle to induce acute muscle injury,followed by intramuscular injection of β-estradiol(E2)or 4-hydroxytamoxifen(4-OHT).The changes in serum E2 of the mice were detected using ELISA,and the number,phenotypes,and efferocytosis of the macrophages in the inflammatory exudates and myofiber regeneration and repair were evaluated using immunofluorescence staining and flow cytometry.C2C12 cells were induced to differentiate into mature myotubes,which were treated with IFN-γ for 24 before treatment with β-Estradiol or 4-OHT.The treated myotubes were co-cultured with mouse peritoneal macrophages in a 1:2 ratio,followed by addition of PKH67-labeled apoptotic mouse mononuclear spleen cells induced by UV irradiation,and macrophage efferocytosis was observed using immunofluorescence staining and flow cytometry.Results Compared with the control mice,the female mice with ovariectomy showed significantly increased mononuclear macrophages in the inflammatory exudates,with increased M1 cell percentage,reduced M2 cell percentage and macrophage efferocytosis in the injured muscle,and obviously delayed myofiber regeneration and repair.In the cell co-culture systems,treatment of the myotubes with β-estradiol significantly increased the number and proportion of M2 macrophages and macrophage efferocytosis,while 4-OHT treatment resulted in the opposite changes.Conclusion In injured mouse skeletal muscles,myofiber E2 signaling promotes M1 to M2 transition to increase macrophage efferocytosis,thereby relieving inflammation and promoting muscle regeneration and repair.

Objective:To investigate the value and influence factors of preoperative and intraoperative localization of ectopic hyperparathyroidism (EHPT).Methods:Results of 99mTc-sestamibi ( 99mTc-MIBI), neck ultrasound, contrast CT and intraoperative local venous parathyroid hormone (IOLVPTH) were retrospectively analyzed in 205 patients with primary hyperparathyroidism (PHPT) suspected of EHPT. Results:Incidence of EHPT was 16.6% (34 cases), and 36 ectopic lesions were detected. The proportion of EHPT in antero-superior mediastinum, intrathyroidal, in the retropharyngeal region, in carotid sheath, in the prevertebral region and intrapericardial were 44.1% (15 cases), 29.4% (10 cases), 11.8% (4 cases), 5.9% (2 cases), 5.9% (2 cases) and 2.9% (1 cases), respectively. Contrast CT was the most sensitive (86.1%, 31 lesions/36 lesions) for EHPT, followed by 99mTc-MIBI (66.7%, 24 lesions/36 lesions), IOLVPTH monitoring (61.8%, 21 lesions/34 lesions) and neck ultrasound (55.6%, 20 lesions/36 lesions). Contrast CT was most sensitive,100% in detecting deep-located EHPT lesions, whereas IOLVPTH had advantages in detecting intrathyroidal EHPT lesions, with a sensitivity of 100.0%.The combined use of 99mTc-MIBI and neck ultrasound showed a sensitivity of 77.8% in the localization of EHPT. Conclusions:Contrast CT is highly sensitive in the localization of EHPT. The combined use of preoperative imaging and IOLVPTH monitoring helps to higher localization for EHPT.

Objective:To explore the effectiveness of autologous fat grafting in the treatment of undesirable skin expansion.Methods:Patients' data were reviewed from 2011 to 2016, including the expanded regions with early signs of skin complications in face and neck. The effects of fat grafting group and control group were evaluated by follow-up records of expansion volume, skin thickness, skin texture and local capillary reaction.Results:Fat grafting could increase the thickness of expanded skin. It also improved the texture of expanded skin, with 0.83± 0.71 points before treatment and 1.30±0.66 points after treatment ( P=0.04). The local capillary reaction was also improved from 1.06±0.54 points before treatment and 1.45±0.51 points after treatment ( P=0.03). The expansion in the fat grafting group was 2.21±0.57 times before treatment and 2.94±0.83 times after treatment. In the control group, the expansion was 2.19 times when it showed early signs, and no obvious changes were observed during the follow-up period. Conclusions:Autologous fat grafting can effectively treat complications of skin expansion, prolong expansion process and promote tissue regeneration.

Objective:To detect the changes in mental arithmetic competence and the related influencing factors in patients with early Parkinson's disease(PD)by using mental arithmetic task behavioral experiment.Methods:Thirty-one patients with early PD and 40 healthy controls were enrolled in this study.The cognitive functions were tested by mini-mental state examination(MMSE)and Montreal cognitive assessment(MoCA). The differences of mental arithmetic competence between the two groups were measured by behavioral experiment.Results:There was no significant difference in correct rate, reaction time and post-corrected reaction time while performing baseline tasks and easy mental arithmetic tasks between the two groups( P>0.05). The reaction time had no significant difference between the two groups after adjusting some confounding factors( P>0.05). However, the correct rate while performing difficult mental arithmetic tasks was significantly lower( t=-2.232, P=0.029)and the reaction time was significantly longer( t=2.149, P=0.035)in PD group than in the controls, and the significant difference in reaction time persisted even after adjusting some confounding factors( t=3.139, P=0.003). In PD group, the correct rate of difficult mental arithmetic tasks was positively associated with MoCA scores( r=0.561, P=0.004), and negatively associated with age( r=-0.532, P=0.008). The reaction time and post-corrected reaction time while performing difficult metal arithmetic task were negatively associated with MoCA scores( r=-0.525, P=0.01; r=-0.554, P=0.005)and positively associated with age( r=0.485, P=0.037; r=0.514, P=0.012)in PD group. Conclusions:The difficult mental arithmetic competence is impaired in early PD patients, which is statistically significantly correlated with cognitive function and age.

Objective:To study relative risk factors for temporarily inhibited parathyroid hormone (PTH) secretion after surgery of primary hyperparathyroidism (PHPT).Methods:Seventy-two cases with PHPT from October 2017 to March 2019 in Beijing Chaoyang Hospital were analyzed retrospectively, including 22 males and 50 females aged from 13 to 83 years old. They were reviewed and divided into a complete inhibition group (24 cases, PTH=0 pg/ml), an incomplete inhibition group (23 cases, 0

Objective The aim of this study was to explore the expression of constitutive photomorphogenesis factor 9 signa-ling complex subunit 6(CSN6) in hepatocellular carcinoma( HCC),and its clinicopathological factors and prognosis. Methods The expression of CSN6 at levels of protein and mRNA in hepatocellular carcinoma and normal hepatic tissues was analyzed using public human protein Atlas database and StarBase database. The TCGA database was used to analyze the differential expression of CSN6 in patients with different tumor stages and graded of hepatocellular carcinoma. Immunohistochemistry was used to detect the expression of CSN6 protein in 106 patients with HCC and analyzed its relationship with multiple clinicopathological factors and overall survival. Results The expression of CSN6 was elevated in hepatocellular carcinoma tissues when compared to normal hepatic tissues. CSN6 was more highly expressed in patients with high pathological grades(G3 and G4)and high stages (Ⅱ and Ⅲ);patients with hepato-cellular carcinoma with high expression of CSN6 had a shorter overall survival. The expression of CSN6 in hepatocellular carcinoma was associated with tumor differentiation and hepatitis B virus infection, and was an independent predictor of overall survival. Conclusion The expression of CSN6 is significantly increased in hepatocellular carcinoma. The increased expression of CSN6 in HCC tissues suggests a poor prognosis. The increased expression is associated with the malignant progression of hepatocellular carcino-ma and has a potential new prognostic marker and therapeutic target.

Objective To investigate the relationship between two single nucleotide polymorphisms (rs356219,rs356165 sites) and cognitive dysfunction in Parkinson disease.Methods 236 patients with Parkinson's disease were randomly selected from November 2014 to November 2017.According to the results of MoCA cognitive function evaluation,the patients were divided into group A (cognitive dysfunction group)and group B (normal cognition group).At the same time,65 patients were randomly selected as group C (Health control group).The allele frequency and genotype distribution of rs356219 and rs356165 were compared,and the differences among the three group were compared.Results In the rs356165 allele frequency,group A (G:57.14％,A:42.86％),group B (G:56.45％,A:43.55％) and group C (G:52.31％,A:47.69％) had no statistical significance (P＞ 0.05).In the rs356165 genotype,G/G (21.43％) and A/A (14.29％) in group A were higher than group C (G/G:4.62％,A/A:1.54％),G/G (22.58％) in group B and A/A (14.52％) were higher than group C G/G (4.62％) and A/A (1.54％) (P＜ 0.05).In the rs356219 allele frequency,group A (G:64.29％,A:64.29％) and group B (G:64.52％,A:35.486％) and group C (G:46.15％,A:53.85％) was statistically significant (P＜0.05),but no statistical significance between group A and group B (P＞0.05);In the rs356219 genotype,group A (G/G:35.71％,A/A:21.43％,A/G:42.86％),group B (G/G:35.48％,A/A:22.58％,A/G:41.94％) and group C (G/G:30.77％,A/A:26.15％,A/G:43.08％) had no statistical significance (P＞ 0.05),and there was no statistical significance between group A and group B (P＞0.05).Conclusions The polymorphism of rs356219 and rs356165 sites in rho-synaptic nucleoprotein plays an important role in the pathogenesis of Parkinson disease.However,there was no correlation with cognitive dysfunction in patients with Parkinson disease.

Objective To explore the application effects of nurse-physician combined outpatient service in peptic ulcer patients. Methods A total of 108 cases of peptic ulcer patients who were being treated in the digestive center of the Affiliated Hospital of Medical College of Ningbo University from January 2015 to February 2017 were recruited in the research by purposive sampling method, and randomly divided into experimental group and control group, with 54 cases in each. Nurse-physician combined outpatient service was provided to the patients in the experimental group, while the patients in the control group received traditional outpatient mode. Disease knowledge, medication compliance and lifestyle were compared between the two groups. Results In the 1st, 2nd and 6th week, patients' disease knowledge in the experimental group was better than that in the control group, and the difference was statistically significant (P<0.01). In the 2nd week, the medication compliance of the experimental group was better than that of the control group, with statistically significant (P<0.05). In the 1st, 2nd and 6th week, the number of smoking and drinking people was less than that of the control group, and the difference was statistically significant (P<0.05). Conclusions The nurse-physician combined outpatient service is beneficial to improve the knowledge level and medication compliance of patients and plays an important role in changing unhealthy living habits.