Aim To investigate the effect of nifedipine on the formation of autophagosomes in hepatoma cell line Huh-7 and its mechanism.Methods Different concentrations of nifedipine were used to interfere with the proliferation of Huh-7 cells in vitro.The effect of nifedipine on the proliferation of Huh-7 cells was detected by cell proliferation experiment and colony formation experiment.The expressions of Beclin1 and LC3B-Ⅱ were detected by Western blot.The effect of nifedipine on the formation of autophagosomes in Huh-7 cells was observed by laser scanning confocal microscopy.Results Nifedipine significantly inhibited the proliferation of Huh-7 cells in a time-and concentration-dependent manner.The IC50 of nifedipine on day 2 was 22.7 mg·L-1.Nifedipine at the concentration of 25 mg·L-1 significantly reduced the colony formation rate of Huh-7 cells compared with the control group, and the inhibition rate of colony formation was(95.46±0.45)%.Western blot analysis showed that nifedipine significantly up-regulated the protein expression levels of Beclin1 and LC3B-Ⅱ.The amount of autophagosomes in nifedipine group cells were more than that of control group, which was observed by laser scanning confocal microscopy.Conclusions Nifedipine significantly inhibits the proliferation of Huh-7 cells and promotes the formation of autophagosomes, which may be related to the up-regulation of Beclin1 protein expression by nifedipine.

Objective To develop a laser treatment machine for the benign prostatic hyperplasia(BPH),which can both avoid the transurethral resection symptoms(TURS) and rapidly remove the big BPH.Methods The machine adopted a long plus laser with 80W average power and 1000W peak value power in order to rapidly vaporize the neoplasm.Because of its high power,short operation time and small thermal penetraction depth,it could avoid the post-operation edema of the organ is resulted from the concretion of traditional continuous-wavelength YAG laser.The control system based on AT89C51 dominated the laser power,and meanwhile,it monitored the process to protect the machine.It was connected with the Hospital Information System(HIS) via RS232.Results The chicken breast tissues were irradiated with the sample machine under water,and the groove irradiated by laser was 4mm in width and 2.5mm in depth with the irradiation speed of 5mm/s.The arbonation of tissue surface was slight and the thermal damage to the adjacent tissues was the minimal.Conclusion This machine can rapidly vaporize the neoplasm with the minimal thermal damage to the adjacent non-irradiated tissues.It is desirable for the treatment of big BPH.

OBJECTIVETo explore the efficacy and the security of laparoscopic technique in patients with traumatic colorectal perforation.

METHODSClinical data of 42 patients with traumatic colorectal perforation in our hospital during March of 2005 to March of 2013 were retrospectively analyzed. Twenty-two patients received traditional open operation, and 20 patients received laparoscopic treatment.

RESULTSAs compared to open group, laparoscopic group had shorter operation time [(72 ± 36) min vs. (128 ± 52) min], less blood loss during operation [(21.2 ± 3.6) ml vs. (62.6 ± 8.8) ml], faster postoperative bowel function return[(1.7 ± 0.6) d vs. (3.5 ± 1.2) d], shorter hospital stay after operation [(7.3 ± 1.8) d vs. (13.6 ± 3.9) d], and lower incidence of postoperative complication [35.0% (7/20) vs. 72.7% (16/22)]. The differences between two were statistically significant (all P<0.05).

CONCLUSIONLaparoscopic operation has advantages in the treatment of traumatic colorectal perforation with short operation time, small trauma, rapid recovery and low incidence of complications.

Humans ; Intestinal Perforation ; surgery ; Laparoscopy ; Length of Stay ; Postoperative Complications ; Postoperative Period ; Retrospective Studies

The present study aimed at isolation and purification of the bioactive terpenoids from the herb of Leonurus japonicus by chromatographic separations such as silica gel, sephadex LH-20 and C18 reversed phase silica gel, as well as preparative HPLC. As a result, leojaponic acids A (1, C17H24O4) and B (2, C18H26O4), two homologous terpenoids, together with (-)-loliolide (3), 1-(3-ethylphenyl) ethane-1, 2-diol (4) and dibutyl phthalate (5), were isolated from the EtOH extract of L. japonicus. All the chemical structures of the isolates were elucidated on the basis of 1D and 2D NMR analyses. Compounds 1 and 2 were new terpenoids, and Compounds 3 and 4 were isolated and identified for the first time from this plant. In addition, the α-glucosidase and tyrosinase inhibitory activity of the new compounds were evaluated.
Enzyme Inhibitors ; chemistry ; isolation & purification ; Fruit ; chemistry ; Glucosidases ; analysis ; antagonists & inhibitors ; Leonurus ; chemistry ; Magnetic Resonance Spectroscopy ; Molecular Structure ; Plant Extracts ; chemistry ; isolation & purification ; Terpenes ; chemistry ; isolation & purification

OBJECTIVETo investigate the predictive value of P53, Ki-67, HER2 protein detection in neoadjuvant chemotherapy for adenocarcinoma of gastroesophageal junction (AGEJ).

METHODSPreoperative biopsy specimens and clinical data of 72 patients of locally advanced Siewert II AGEJ between June 2010 and December 2013 were reviewed. All the patients received SOX scheme neoadjuvant chemotherapy, and were divided into effective group (complete response plus partial response) and ineffective group (stable disease plus progressive disease). Expressions of above 3 proteins were detected by immunohistochemistry in all the patients before neoadjuvant chemotherapy. The relationship between various proteins and efficacy of chemotherapy was analyzed by univariate and logistic multivariate regression analyses.

RESULTSAll the 72 patients successfully completed 2 cycles of SOX neoadjuvant chemotherapy, among them, 5 cases (6.9%) with complete response, 30 cases (41.7%) with partial response, 31 cases (43.1%) with stable disease, 6 cases (8.3%) with progressive disease, including 35 cases in effective group and 37 cases in ineffective group. Compared with ineffective group, the positive expression rate of P53 was significantly reduced (25.0% vs. 45.9%, P=0.020), and that of Ki-67 significantly increased (77.1% vs. 43.2%, P=0.003), however, there was no significant difference in the expression rate of HER2 between the two groups (P>0.05). Multivariate analysis showed that Ki-67 was the independent predictive factor for the efficacy of neoadjuvant chemotherapy (P=0.015). Spearman rank correlation showed that Ki-67 expression was positively correlated with HER2 expression (r=0.259, P=0.028), but P53 expression was not correlated with Ki-67 or HER2 (r=0.140, 0.042, P=0.240, 0.725, respectively).

CONCLUSIONSSOX neoadjuvant chemotherapy is safe and effective for AGEJ, especially for patients with depressed expression of P53 and elevated expression of Ki-67, which both may be used as reference for the prediction of chemotherapy efficacy. There is no correlation between P53 and Ki67 proteins, so combined detection may improve the predictive value.

Adenocarcinoma ; diagnosis ; drug therapy ; Esophageal Neoplasms ; diagnosis ; drug therapy ; Esophagogastric Junction ; pathology ; Humans ; Immunohistochemistry ; Ki-67 Antigen ; metabolism ; Neoadjuvant Therapy ; Receptor, ErbB-2 ; metabolism ; Remission Induction ; Tumor Suppressor Protein p53 ; metabolism

Objective: To explore the influence mechanism of intrusive thoughts and ego depletion between effects of workplace violence on burnout sense in clinical nurses. Methods: In May 2019, 10 cities in Henan Province and Fujian Province were selected as sampling cities by the method of grabbing random balls. Using the stratified cluster sampling method, nurses in clinical nursing posts in 22 third class hospitals and 23 second class hospitals were selected as the research objects for a cross-sectional epidemiological survey, including 1200 nurses. A total of 1159 valid questionnaires were collected, and the effective rate was 96.6%. 1159 clinical nurses were investigated by workplace violence scale, event impact scale, self-regulation fatigue scale and job burnout scale. The items contained in the questionnaire were analyzed by exploratory factor analysis with Harman single factor test, and the demographic characteristics of nurses' workplace violence, invasive thinking, self loss and job burnout were compared and analyzed with s-n-k. Results: Those with less than 3 years of service, those with more than 3 years of aggressive thinking and self loss score, and those with less than 3 years of job burnout score; The score of job burnout of unmarried was lower than that of married; The scores of invasive thinking and self loss of non editors were higher than those of current editors; The scores of workplace violence, aggressive thinking, self loss and job burnout of clinical nurses in tertiary hospitals were higher than those in secondary hospitals; The score of job burnout of undergraduate and above is higher than that of junior college and below; The scores of workplace violence, aggressive thinking and self loss of clinical nurses in surgical departments were higher than those in non-surgical departments; The job burnout score of those aged 36 and above was higher than that of those aged <36, The difference was statistically significant (P< 0.05) . Aggressive thinking and self attrition played a mediating role between workplace violence and job burnout. Workplace violence affected job burnout through the single mediating role of aggressive thinking, the single mediating role of self attrition, and the chain mediating role of aggressive thinking self attrition (β=0.16、0.08、0.03, 95%CI: 0.251~0.190、0.121~0.028、0.050~0.012, P<0.05) . Conclusion: Workplace violence affects burnout sense through the independent mediating role of intrusive thoughts and ego depletion and the chain mediating role of intrusive thoughts and ego depletion in clinical nurses.
Adult ; Aged ; Burnout, Professional ; Cross-Sectional Studies ; Humans ; Job Satisfaction ; Nurses ; Personnel Turnover ; Surveys and Questionnaires ; Workplace ; Workplace Violence

Objective: To investigate the functional somatic discomfort status, and to analyze the effect of job stress, hostile attribution bias and ego depletion on functional somatic discomfort in clinical nurses. Methods: In May 2019, 10 cities in Henan Province and Fujian Province were randomly selected as sampling cities. Using the stratified cluster sampling method, nurses of clinical nursing posts in 22 third class hospitals and 23 second class hospitals were selected as the research objects. The general information, job stress, hostile attribution bias, ego depletion and functional somatic discomfort of clinical nurses were investigated by self-designed general information questionnaire, Perceived Stress Scale, Social Information Processing-attribution Bias Questionnaire, Self-regulatory Fatigue Scale, Patient Health Questionnaire-15. 1200 clinical nurses included, and a total of 1159 valid questionnaires were collected, the effective rate of questionnaire collection was 96.6%. The t test was used to compare the difference of the functional somatic discomfort scores of clinical nurses with different demographic characteristicst. The influence of job stress, hostile attribution bias and ego depletion on functional somatic discomfort of clinical nurses were analyzed with Bootstrap. Results: The functional somatic discomfort score of clinical nurses was (8.95±4.38), of which 859 (74.12%) had functional somatic discomfort symptom. The functional somatic discomfort score of clinical nurses aged 36-50 years old was higher than that of 19-35 years old, the functional somatic discomfort score of clinical nurses with service age ≥5 years was higher than that of <5 years, the functional somatic discomfort score of non-permanent clinical nurses was higher than that of permanent clinical nurses, the functional somatic discomfort score of clinical nurses in tertiary hospitals was higher than that of secondary hospitals, the functional somatic discomfort score of clinical nurses in surgical departments were higher than those in non-surgical departments, and the differences were statistically significant (P<0.05). Job stress affected functional somatic discomfort through the single mediating role of hostile attribution bias, the single mediating role of ego depletion, and the chain mediating role of hostile attribution bias and ego depletion (β=0.17, 95%CI: 0.10-0.20; β=0.16, 95%CI: 0.10-0.20; β=0.07, 95%CI: 0.03-0.10; P<0.05) . Conclusion: The functional somatic discomfort symptoms of clinical nurses are significant and varied among different age, working age, employment form, hospital grade and department groups. They are affected by work stress directly and through the separate mediating effect of hostile attribution bias and ego depletion, and the chain mediating effect of hostile attribution bias and ego depletion.
Humans ; Adult ; Middle Aged ; Child, Preschool ; Young Adult ; Hostility ; Occupational Stress/epidemiology* ; Surveys and Questionnaires ; Tertiary Care Centers ; Nurses

Objective To validate the hypothesis that the phenotype reversion occurs in the smooth muscle cells in the corpus cavernosum of hypertensive rats with selenium food and explore selenium′s impact on erectile function. Methods 25 14-week-old male spontaneously hypertensive rates (SHR) were divided into 2 groups (SHR-ED-Se group n = 8 and SHR-ED-N group n = 9). SHR-ED-Se rats were fed with selenium diet, SHR-ED-N rats and WKY rats with normal diet. And 10 syngeneic normotensive rats (WKY) were used as control group. All rats were killed after 4-week feeding. Immunohistochemical staining and color image analysis system were used to observe expression of α-actin, desmin and osteopontin (OPN) in rats corpus cavernosum of different group. Results 2 SHR-ED-N rats died. Expression of α-actin of smooth muscle in corpus cavernosum in SHR-ED-N group was the lowest in all groups (P = 0.000), so did erection frequency (P < 0.05). Expression of OPN in SHR-ED-N is the highest (P = 0.000). No significant difference existed in expression of desmin in all group (P > 0.05). Conclusions Phenotype modulation of smooth muscle in corpus cavernosum of SHR rats can be reversed by selenium which means the smooth cells can transform from synthetic phenotype into the contractile phenotype, resulting ultimately in improving erectile function.

OBJECTIVE: To explore the relationship of compassion fatigue and occupational stress and job burnout in ambulance nurses. METHODS: By stratified cluster random sampling method,a total of 380 ambulance nurses from 5 cities in Henan Province were selected as objects,and 261 emergency nurses from the same hospital were selected as control. A assessment survey was performed using the Chinese version of Professional Quality of Life,the Maslach Burnout Inventory( MBI),and the Chinese Nursing Stressor Scale( NSS) which included the stressor related to working expectation( factor1),the stressor related to family( factor 2),the stressor related to interpersonal relationships( factor 3),the stressor related to job specification( factor 4),related to patients( factor 5),and to the working load( factor 6). RESULTS: The ambulance nurses had higher compassion fatigue scores than the emergency nurses( P < 0. 01). One-way analysis of variance showed that the ambulance nurses with length of service less than 3. 0 years had higher compassion fatigue scores than those with 3. 0 or more years and those with over 10. 0 years of service length( P < 0. 05). The compassion fatigue scores of general nurses were higher than those professional titled as senior nurses and nurse supervisors or above( P <0. 05). The correlation analysis showed that the compassion fatigue scores of ambulance nurse were positively correlated with the factor 2,3,4,5 and 6 of NSS scores and MBI scores [the correlation coefficients( r) were 0. 15,0. 28,0. 25,0. 34,0. 32 and 0. 36,P < 0. 05]. The MBI scores were positively correlated with all the 6 factors of NSS( r were 0. 31,0. 25,0. 36,0. 32,0. 37 and 0. 31,respectively,P < 0. 05). The multiple linear regression analysis results showed that the regression correlations among MBI score,NSS factor 5 score,interaction effect of MBI and NSS factor 5 and the compassion fatigue score were confirmed( the standardized partial regression coefficient were 0. 39,0. 24 and 0. 35,P <0. 05). The path analysis results showed that the MBI score had incomplete intermediate effect between NSS and compassion fatigue scores. CONCLUSION: Ambulance nurses have severe condition in compassion fatigue,the nurses with shorter length of service or lower titles have higher susceptibility,with collaborative influences of job burnout and occupational stress.

Objective To investigate the clinical, pathology, diagnosis and treatment of the lower urinary system dysfunction among chronic recreational ketamine abusers. Methods From 2000-2008, 20 ketamine abusers(14 men and 6 women; mean age, 22.3 years), from 3 hospitals in Guangzhou and Hongkong, and suffering from lower urinary tract dysfunction was reported. All of them had abused ketamine for 1 to 4 years, and presented with severe lower urinary tract symptoms. Complaint of severe frequency, urgency, urge incontinence, and painful haematuria was common. Urine cultures were negative. Six men suffered from severe dysuria. B ultrasound examination of 16 cases demonstrated the presence of bilateral hydronephrosis. Fourteen IVU and 10 CT investigations demonstrated the presence of bilateral hydronephrosis, bladder contraction, and 1 case showed papillary necrosis of the kidney. Different levels of abnormal liver function and chronic/acute renal failure were observed. All of the patients were required to withdraw the narcotics and the experimental medicine were given. Results The biopsies of 6 cases demonstrated the cystitis. Twelve cases' symptoms were reversible after these patients stopped or reduced the frequency and amount of ketamine abuse. Pentosan polysulfate sodium and sodium hyaluronate solution relieved the symptoms of 6 patients. Conclusions "Street ketamine" associated urinary system dysfunction might be a kind of in flammatory process involving the upper and lower urinary tract. Underlying aetiology and treatment methods necessitate further study.