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1.
Chinese Journal of Urology ; (12): 208-213, 2021.
Article in Chinese | WPRIM | ID: wpr-884990

ABSTRACT

Objective:To analyze the cause of varicocele (VC) recurrence and investigate the efficacy of sub-inguinal microsurgical varicocelectomy (MV) for recurrent VC.Methods:All of 16 inpatients diagnosed as recurrent VC, in the Department of Andrology of the Affiliated Hospital of Qingdao University from 2015 April to 2019 April, were performed sub-inguinal MV. The age of the inpatients was 18-36 years old, median 27 years old.5 cases were originally performed retroperitoneal high ligation of spermatic vein and other 11 cases were originally performed laparoscopic varicocelectomy. During the review one to three years after the previous operation, all of 16 patients were diagnosed as VC recurrence. The complains of these patients during the review included male subfertility (10 cases) and scrotal pain (12 cases), in which 6 cases’ complains were male subfertility with scrotal pain. After admission, 13 patients were classified as Grade Ⅲ (left in 8 cases, bilateral in 5 cases) and 3 patients as Grade Ⅱ (all left). The median of their visual analogue scale (VAS) was 2.5. Color doppler flow imaging (CDFI) grading showed: Grade Ⅲ in 12 cases (left in 7 cases, bilateral in 5 cases), Grade Ⅱ in 4 cases (all left). Particularly, 12 of them were Graded as Ⅲ simultaneously accompanying with Nut-cracker Phenomenon (NCP). Preoperative tests showed that the average serum testosterone was (16.2±4.9)nmol/ml, the average sperm concentration was (11.8±3.9)×10 6/ml and the progressive motility rate (PR) was (24.4±4.2)%. All of the patients were performed sub-inguinal MV using general anesthesia and supine position. The spermatic cords were clearly exposed and padded up by inserting gauze strips under them. During the operation, the field was magnified 4-6 times with the microscope. Then all of the dilated external and internal spermatic veins were ligated, at the same time the internal spermatic artery and lymph vessels were well preserved. During these operations, 11 patients underwent left-side MV, while other 5 did bilateral MVs. During these MVs, we found twisted and dilated external and internal spermatic veins in all cases and well preserved the internal spermatic arteries and lymph vessels. The number of ligated left and right external spermatic veins were(2.1±0.6) and (1.4±0.5)respectively and the number of ligated left and right internal spermatic veins were (10.1±1.1) and (6.6±0.5) respectively. We also found out(1.3±0.5) internal spermatic arteries and (3.0±1.0)lymph-vessels on left side. On right side, there were (1.4±0.5) internal spermatic arteries and (2.6±0.5) lymph-vessels respectively. At last, we summarily analyzed the pre-operative and post-operative VAS, serum testosterone, CDFI and semen analysis data. Results:All of the 16 sub-inguinal MVs were successfully performed. All patients were reviewed comprehensively 6 months after MV. The reviewed results showed that the post-operative VAS was significantly reduced ( Z=-2.994, P<0.05), palpable scrotal vessels disappeared and Valsalva tests were negative. No obvious reflux of internal spermatic veins were detected by CDFI. Interestingly, the sperm concentration and motility were both significantly improved 6 months after MV ( P<0.05), while there was not remarkable increase of the serum testosterone after MV ( P>0.05). During the follow up, no testicular atrophy, hydrocele and other complications were found. Up to submission, five of the ten patients who presented for male subfertility have impregnated their wives. Conclusions:The most possible cause of VC recurrence could be the omission of the external and internal spermatic veins, particularly in the grade Ⅲ VC patients or VC accompanied with NCP. The sub-inguinal MV, which can discover more twisted spermatic veins and at the same time preserve the spermatic artery and lymph-vessels, shows better clinical efficacy than other procedures.

2.
Article in Chinese | WPRIM | ID: wpr-881245

ABSTRACT

@#Objective    To investigate the prognostic survival status and influence factors for surgical treatment of esophageal squamous cell carcinoma (ESCC) in pathological stage T1b (pT1b). Methods    The patients with ESCC in pT1b undergoing Ivor-Lewis or McKeown esophagectomy in Lanzhou University Second Hospital from 2012 to 2015 were collected, including 78 males (78.3%) and 17 females (21.7%) with an average age of 61.4±7.4 years. Results    The most common postoperative complications were pneumonia (15.8%), anastomotic leakage (12.6%) and arrhythmia (8.4%). Ninety-three (97.9%) patients underwent R0 resection, with an average number of lymph node dissections of 14.4±5.6. The rate of lymph node metastasis was 22.1%, and the incidence of lymph vessel invasion was 13.7%. The median follow-up time was 60.4 months, during which 25 patients died and 27 patients relapsed. The overall survival rate at 3 years was 86.3%, and at 5 years was 72.7%. Multivariate Cox regression analysis showed that lymph node metastasis (P=0.012, HR=2.60, 95%CI 1.23-5.50) and lympovascular invasion (P=0.014, HR=2.73, 95%CI 1.22-6.09) were independent risk factors for overall survival of pT1b ESCC. Conclusion    Esophagectomy via right chest approach combined with two-fields lymphadenectomy is safe and feasible for patients with pT1b ESCC. The progress of pT1b ESCC with lymph node metastasis or lymphovascular invasion is relatively poor.

3.
Article in Chinese | WPRIM | ID: wpr-873748

ABSTRACT

Objective To investigate the effects of persistent Echinococcus multilocularis infections on hepatic fibrosis in mice, so as to provide insights into the understanding of liver fibrogenesis induced by E. multilocularis infections and the treatment of alveolar echinococcosis. Methods Hepatic stellate HSC-T6 and LX-2 cells were exposed to the sera (25, 50 and 100 μL) from Meriones unguiculatus infected with E. multilocularis, and E. multilocularis, germinal layer cells (GCs) and protoscoleces (PSCs) for 48 hours, respectively. The cell proliferation was measured using a CCK-8 assay, and the levels of collagen 1 (Col1) and α-smooth muscle actin (α-SMA) were measured in the culture supernatant of HSC-T6 cells using ELISA. In addition, the serum and liver samples were collected 1, 2, 4, 6, 8 months post-infection with E. multilocularis, respectively. The serum Col1 and α-SMA concentrations were measured using enzyme-linked immunosorbent assay (ELISA), and the deposition of collagen fibers was examined in mice livers using Sirius red staining. Results The sera of E. multilocularis-infected gerbils promoted the proliferation of HSC-T6 and LX-2 cells in vitro, and there were significant differences seen in the proliferative rate of HSC-T6 (FHSC-T6 = 126.50, P < 0.05) and LX-2 cells (FLX-2 = 201.50, P < 0.05) among different serum groups, with the highest proliferative rate of HSC-T6 (573.36% ± 206.34%) and LX-2 cells (940.38% ± 61.65%) found following exposure to 100 μL mouse sera. Exposure to serum from E. multilocularis-infected gerbils resulted in an increase in the Col1 and α-SMA levels in the culture supernatant of HSC-T6 cells, with the greatest Col1 (20.99 ng/mL ± 2.01 ng/mL) and α-SMA levels (305.52 pg/mL ± 16.67 pg/mL) measured following exposure to 100 μL sera. The metacestodes (142.65% ± 9.17% and 189.99% ± 7.75%), GCs (118.55% ± 8.96% and 122.54% ± 0.21%) and PSCs of E. multilocularis (156.34% ± 17.45% and 160.59% ± 31.41%) all promoted the proliferation of HSC-T6 and LX-2 cells in vitro, and there were significant differences in the proliferative rates of HSC-T6 (FHSC-T6 = 11.24, P < 0.05) and LX-2 cells among groups (FLX-2 = 47.72, P < 0.05). Exposure to E. multilocularis resulted in an increase in Col1 and α-SMA levels in the culture supernatant of HSC-T6 cells, and the highest Col1 (4.43 ng/mL ± 2.23 ng/mL) and α-SMA levels (285.20 pg/mL ± 90.67 pg/mL) were detected following treatment with E. multilocularis metacestodes. In addition, a persistent increase was seen in the deposition of collagen fibers in mice livers 1 to 8 months post-infection with E. multilocularis, with the greatest Col1 level (280.26 ng/mL ± 23.04 ng/mL) seen 6 months post-infection and the highest α-SMA level (33.68 ng/mL ± 4.45 ng/mL) detected 8 months post-infection, respectively. Conclusions Persistent E. multilocularis infections promote hepatic stellate cell proliferation, induce an increase in mouse serum Col1 and α-SMA levels, and cause elevated deposition of collagen fibers in mice livers. The infective stage of E. multilocularis is a critical period for inducing hepatic fibrosis of alveolar echinococcosis.

4.
Article in Chinese | WPRIM | ID: wpr-871665

ABSTRACT

Objective:To evaluate the efficacy of artificial intelligence assisted pulmonary nodule diagnosis system in detection pulmonary nodule and predicting the malignant probability of pulmonary nodule.Methods:A retrospectively analyze the clinical data of 199 patients with lung nodules in the Thoracic Surgery Department of Lanzhou University Second Hospital from May 2016 to July 2020. The preoperative chest CT was imported into the artificial intelligence system to record the detected lung nodules, to measure nodal diameter and density classification and malignant probability prediction value of each nodule. The detection rate of pulmonary nodules by artificial intelligence system was calculated, and the sensitivity, specificity, positive likelihood ratio and negative likelihood ratio of artificial intelligence system in the differential diagnosis of benign and malignant pulmonary nodules were calculated and compared with manual film reading. and the sensitivity and specificity in the differential diagnosis of benign and malignant pulmonary nodules under the condition of different size and density of pulmonary nodules.Results:A total of 204 pulmonary nodules were pathologically diagnosed by surgical resection, and the detection rate of pulmonary nodules by artificial intelligence system was 100%. The artificial intelligence system can distinguish benign and malignant pulmonary nodules with a sensitivity of 95.83%(95% CI: 0.8967-0.9883), specificity 25.00%(95% CI: 0.1717-0.3425), and a positive likelihood ratio of 1.27(95% CI: 1.14-1.44), negative likelihood ratio 0.17(95% CI: 0.06-0.46), Manual reading for the differentiation of benign and malignant pulmonary nodules has a sensitivity of 87.36%(95% CI: 0.7850-0.9352), specificity 72.17%(95% CI: 0.6214-0.8079), and a positive likelihood ratio of 3.14(95% CI: 2.26-4.37), the negative likelihood ratio is 0.18(95% CI: 0.10-0.31). 5mm≤diameter of pulmonary nodule<10 mm, sensitivity 100%(95% CI: 0.6637-1.0000), specificity 50.00%(95% CI: 0.01258-0.98740), 10 mm≤diameter of pulmonary nodule <20 mm, sensitivity 94.29%(95% CI: 0.8084-0.9930), specificity 29.83%(95% CI: 0.1843-0.4340), 20 mm≤ diameter of pulmonary nodule ≤30 mm, sensitivity 96.15%(95% CI: 0.8679-0.9953), specificity 18.37%(95% CI: 0.0876-0.9953), sensitivity of subsolid lung nodules: 100%(95% CI: 0.9051-1.0000), specificity 20.00%(95% CI: 0.0051-0.7164), solid lung nodule sensitivity 93.22%(95% CI: 0.8354-0.9812), specificity 25.24%(95% CI: 0.1720-0.3476). Conclusion:The artificial intelligence assistant diagnosis system of pulmonary nodules has a strong performance in the detection of pulmonary nodules, but it can not meet the clinical requirements in the differentiation of benign and malignant pulmonary nodules. At present, the artificial intelligence system can be used as an auxiliary tool for doctors to detect pulmonary nodules and assist in the diagnosis of benign and malignant pulmonary nodules.

5.
Article in Chinese | WPRIM | ID: wpr-865976

ABSTRACT

Objective:To explore the application of problem-based learning (PBL) combined with case-based learning (CBL) teaching mode in the clinical practice teaching of diagnosis and treatment of heart failure.Methods:A total of 116 interns doing the internship in the hospital from September 2017 to March 2019 were selected in this study. They were divided into two groups according to the internship time, the control group ( n=63) and the research group ( n=53). The control group adopted traditional teaching, and PBL combined with CBL teaching mode was performed in the research group. The theoretical examination results and practical diagnostic operation scores of the two groups were compared. T-test and chi-square test were performed by SPSS 17.0. Results:The results showed that the scores of theoretical examination and practical operation of the interns taught by PBL combined with CBL teaching mode were (87.34±5.69) and (89.58±4.92), respectively, which were significantly higher than those of the traditional teaching mode ( P<0.01); and the teaching satisfaction in the control group was also significantly better than that in the control group. Conclusion:PBL combined with CBL teaching mode has a good effect in the practice teaching of heart failure, effectively improve students' interest in learning, and is worthy of further promotion of practices in other cardiovascular diseases.

6.
National Journal of Andrology ; (12): 917-921, 2020.
Article in Chinese | WPRIM | ID: wpr-880292

ABSTRACT

Objective@#To evaluate the validity of psychological care combined with enhanced recovery after surgery (PC+ERAS) management in perioperative nursing care of andrological patients.@*METHODS@#A total of 300 male patients undergoing andrological surgery were included in this study, 150 given PC+ERAS and the other 150 receiving routine nursing care as controls. We evaluated anxiety and depression of all the patients on admission and discharge using Self-Rating Anxiety Scale (SAS) and Self-Rating Depression Scale (SDS), and compared post-operative hospital days, off-bed time, first passage of flatus, Visual Analog Scale (VAS) score and satisfaction with nursing care between the two groups of patients.@*RESULTS@#On discharge, significant improvement was observed in SAS and SDS scores in the PC+ERAS group compared with the baseline, even more significant than in the control group (P 0.05). The patients in the PC+ERAS group also achieved a significantly shorter post-operative hospital stay, earlier post-operative off-bed time and passage of flatus, lower VAS score, and higher satisfaction with nursing care than those in the control group (P < 0.05).@*CONCLUSIONS@#Psychological care combined with ERAS management deserves wide application in the perioperative nursing care of andrological patients, which can significantly improve the patients' anxiety and depression, shorten post-operative hospital stay, reduce VAS score, and increase their satisfaction with nursing care.


Subject(s)
Enhanced Recovery After Surgery , Humans , Length of Stay , Male , Perioperative Nursing , Postoperative Complications , Postoperative Period , Urologic Surgical Procedures, Male/psychology
7.
National Journal of Andrology ; (12): 906-910, 2020.
Article in Chinese | WPRIM | ID: wpr-880290

ABSTRACT

Objective@#To investigate the distribution of the gene subtypes of human papillomavirus (HPV) in male patients with condyloma acuminatum (CA) and analyze the characteristics of the gene subtypes.@*METHODS@#We extracted genomic DNA of the HPV virus from the genital tissue of 70 male CA patients, detected the DNA subtypes of HPV using the PCR-reverse dot hybridization technique, and analyzed the rates of different subtypes identified and their characteristics of distribution in different age groups.@*RESULTS@#The male HPV-positive patients were mainly infected at the age of 20-39 years, primarily with high- and low-risk mixed infection of various subtypes, which accounted for 61.54% in the 20- to 29-year-olds and 42.86% in the 30- to 39-year-olds. Among the 70 CA patients, 22 HPV subtypes were identified, the top five subtypes including HPV 11 (21.08%), HPV 6 (19.46%), HPV 42 (6.49%), HPV 59 (6.49%) and HPV 53 (5.95%); 20 infected with a single subtype (28.57%), 19 with two subtypes (27.14%) and 31 with three or more (44.29%); and 30 infected with a low-risk single subtype (42.86%) and 40 with both high- and low-risk multiple subtypes (57.14%).@*CONCLUSIONS@#Male patients with CA are mainly infected with HPV 11 and HPV 6, with a significantly higher rate of multi-subtype than single-subtype infection, and the multi-subtype patients chiefly with high- and low-risk mixed infection. Men aged 20-39 years old are most commonly affected by CA.


Subject(s)
Adult , Condylomata Acuminata/virology , DNA, Viral/genetics , Genotype , Humans , Male , Papillomaviridae/genetics , Papillomavirus Infections/virology , Young Adult
8.
Biol. Res ; 53: 36, 2020. tab, graf
Article in English | LILACS | ID: biblio-1131882

ABSTRACT

BACKGROUND: To investigate the thalamic neurotransmitters and functional connections in the development of chronic constriction injury (CCI)-induced neuropathic pain. METHODS: The paw withdrawal threshold was measured by mechanical stimulation the right hind paw with the von frey hair in the rats of CCI-induced neuropathic pain. The N-acetylaspartate (NAA) and Glutamate (Glu) in thalamus were detected by magnetic resonance spectrum (MRS) process. The thalamic functional connectivity with other brain regions was scanned by functional magnetic resonance image (fMRI). RESULTS: The paw withdrawal threshold of the ipsilateral side showed a noticeable decline during the pathological process. Increased concentrations of Glu and decreased levels of NAA in the thalamus were significantly correlated with mechanical allodynia in the neuropathic pain states. The thalamic regional homogeneity (ReHo) decreased during the process of neuropathic pain. The functional connectivity among the thalamus with the insula and somatosensory cortex were significantly increased at different time points (7, 14, 21 days) after CCI surgery. CONCLUSION: Our study suggests that dynamic changes in thalamic NAA and Glu levels contribute to the thalamic functional connection hyper-excitation during CCI-induced neuropathic pain. Enhanced thalamus-insula functional connection might have a significant effect on the occurrence of neuropathic pain.


Subject(s)
Animals , Rats , Thalamus/metabolism , Wounds and Injuries/physiopathology , Neurotransmitter Agents/metabolism , Neuralgia , Thalamus/physiopathology , Aspartic Acid/analogs & derivatives , Aspartic Acid/metabolism , Glutamic Acid/metabolism , Constriction , Hyperalgesia
9.
Article in Chinese | WPRIM | ID: wpr-706983

ABSTRACT

Objective To observe the effects of different TCM exercises for preventive treatment of diseases on sleep quality and multidimensional mental health level of college students.Methods According to the willing of the research objects, 132 college students were divided into Yijinjing group, Baduanjin group, Wuqinxi group, Tai Chi group, and jogging group. They exercised 45 min each time, 5–6 times per week, received central guidance every two weeks, and exercise intensity was timely adjusted based on master of physical activity and reaction to the situation of college students, for 2 months. PSQI, BFS, SDS and SAS before and after intervention in each group were observed. Results After intervention, five kinds of exercises could improve sleep situation of college students, and had their own focus in sleep quality, falling-asleep time, sleep time, sleep efficiency, sleep disorders, sleep medication, daytime dysfunction. There was statistical significance in BFS activity score, thought score, anger score, excitation score, and depression score after intervention in Yijinjing group compared with before intervention (P<0.05); There was statistical significance in activity score, total joy score, calm total score after intervention in Wuqinxi group compared with before intervention (P<0.05). There was statistical significance in SAS total scores of college students in Yijinjing group, Baduanjin group, and jogging group after intervention compared with before intervention (P<0.05). There was statistical significance in SAS standard scores of college students in Yijinjing group, Baduanjin group, and jogging group after intervention compared with before intervention (P<0.05). There was no statistical difference in SDS scores in the five groups before and after intervention (P>0.05).Conclusion 5 kinds of exercises can improve the sleep quality from different aspects. Yijinjing group and Wuqinxi group can improve the mental health of college students, of which Yijinjing group can bi-directionally regulate the positive and negative psychological indicators of college students.

10.
Biol. Res ; 51: 21, 2018. graf
Article in English | LILACS | ID: biblio-950905

ABSTRACT

OBJECTIVE: To explore the precise mechanism of electroacupuncture (EA) to delay cognitive impairment in Alzheimer disease. Methods N -Acetylaspartate (NAA), glutamate (Glu) and myoinositol (mI) metabolism were measured by magnetic resonance spectroscopy, learning and memory of APP/PS1 mouse was evaluated by the Morris water maze test and the step-down avoidance test, neuron survival number and neuronal structure in the hippocampus were observed by Nissl staining, and BDNF and phosphorylated TrkB detected by Western blot. RESULTS: EA at DU20 acupuncture significantly improve learning and memory in behavioral tests, up-regulate NAA, Glu and mI metabolism, increase the surviving neurons in hippocampus, and promote the expression of BDNF and TrkB in the APP/PS1 transgenic mice. CONCLUSION: These findings suggested that EA is a potential therapeutic for ameliorate cognitive dysfunction, and it might be due to EA could improve NAA and Glu metabolism by upregulation of BDNF in APP/PS1 mice.


Subject(s)
Animals , Male , Mice , Electroacupuncture/methods , Aspartic Acid/analogs & derivatives , Glutamic Acid/metabolism , Hippocampus/chemistry , Learning/physiology , Memory/physiology , Protein-Tyrosine Kinases/analysis , Magnetic Resonance Imaging , Membrane Glycoproteins/analysis , Mice, Transgenic , Magnetic Resonance Spectroscopy , Random Allocation , Blotting, Western , Aspartic Acid/metabolism , Maze Learning , Brain-Derived Neurotrophic Factor , Models, Animal , Exercise Test , Hippocampus/diagnostic imaging , Inositol/analysis
11.
Article in Chinese | WPRIM | ID: wpr-333438

ABSTRACT

Food intake has a great influence on blood glucose in patients with diabetes.This study was to determine the glycemic index (GI) and glycemic load (GL) of a particular pomelo named Majia pomelo and its effects on postprandial glucose (PPG) in patients with type 2 diabetes (T2D).Twenty healthy subjects and 20 T2D patients (controlled on lifestyle measures and/or metformin) were tested on 2 separate days with 50 g of glucose and 50 g equivalent of carbohydrates from Majia pomelo for GI measurement.To test effects of Majia pomelo on PPG,19 hospitalized T2D patients (controlled on insulin therapy) were selected for a 9-day study.The dose of insulin for each patient was adjusted on the first 3 days.A total of 100 mg Majia pomelo was consumed per meal in the last 3 tested days.Blood glucose was measured to evaluate the glycemic excursions.The GIs for Majia pomelo in healthy individuals and T2D patients were 78.34± 1.88 and 72.15±1.95 respectively.The value of GL was as low as 4.23 in diabetic patients with serving size of 100 g pomelo,indicting Majia pomelo as a high GI but low GL fruit.Consumption of Majia pomelo in hospitalized T2D patients did not cause significant glucose fluctuation.It was concluded that high GI pomelo can serve as a low GL fruit if it is consumed with a limited daily amount and thus can be supplied to diabetic patients.These results may mean more varieties of food choices for T2D patients.

12.
Article in Chinese | WPRIM | ID: wpr-702195

ABSTRACT

Objective To compare the clinical efficacy of ticagrelor versus clopidogrel on the vessels without percutaneous coronary intervention(PCI),the cardiac structure and cardiac function in patients with acute coronary syndrome(ACS).Methods The clinical data of 95 patients with ACS who received PCI in southwest hospital from January 2014 to December 2016 were analyzed retrospectively,who were divided into two groups,47 patients in the treatment group with ticagrelor and 48 patients in the treatment group with clopidogrel.The average follow-up results of vessels without PCI,the changes of cardiac structure,cardiac function between two groups were compared.Results The follow-up results at 1 years after PCI showed that the revascularization rate 6.4% of the vascular without PCI in ticagrelor group was significantly lower than 12.5% of clopidogrel group(P < 0.000 1);vascular disease progression and recurrence rate of angina in ticagrelor group was significantly lower than those of clopidogrel group;the LEVF and LVEDD of ticagrelor group improved better,and level of BNP was significantly decreased.There was no significant difference in risk of hemorrhage between two groups,but the incidence of dyspnea in ticagrelor group was higher than that of clopidogrel group.Conclusion Ticagrelor is superior to clopidogrel in the protection of vessels without PCI,and be helpful to improve the cardiac structure and cardiac function in patients with acute coronary syndrome(ACS) after PCI.

13.
Article in English | WPRIM | ID: wpr-331088

ABSTRACT

A new, simple and sensitive method was developed for the determination of silicon tetrahydride in the air of workplace in this study. The alkaline resin-based spherical activated carbon was used to collect sample of silicon tetrahydride at workplace. Silicon tetrahydride was then desorbed from active carbon in 100°C hot water. After reacting with ammonium molybdate, oxalic acid and 1,2,4-trichlorobenzene alpha-naphthol amino sulfonic acid under acid condition, silicon tetrahydride was transformed into silicon molybdenum blue. The absorbance of silicon molybdenum blue was quantitatively measured at the wavelength of 680 nm. The results showed that the average sampling efficiency and desorption efficiency were 97.53% and 94.94%, respectively by this method. Detection limits were 0.054 μg/mL for the spectrophotometric method and 0.14 mg/m(3) for the determination of silicon tetrahydride in the air of workplace (sampling volume was 7.5 L). The conversion rate of silicon tetrahydride gradually decreased when storage time of samples was extended. The descent rate of sample was less than 10% when the sample was sealed for 7 days in the room temperature. It was concluded that this spectrophotometric method can be successfully used to determine silicon tetrahydride in the worksites.


Subject(s)
Air Pollutants, Occupational , Humans , Limit of Detection , Reproducibility of Results , Silanes , Spectrophotometry , Methods , Workplace
14.
Article in English | WPRIM | ID: wpr-636989

ABSTRACT

A new, simple and sensitive method was developed for the determination of silicon tetrahydride in the air of workplace in this study. The alkaline resin-based spherical activated carbon was used to collect sample of silicon tetrahydride at workplace. Silicon tetrahydride was then desorbed from active carbon in 100°C hot water. After reacting with ammonium molybdate, oxalic acid and 1,2,4-trichlorobenzene alpha-naphthol amino sulfonic acid under acid condition, silicon tetrahydride was transformed into silicon molybdenum blue. The absorbance of silicon molybdenum blue was quantitatively measured at the wavelength of 680 nm. The results showed that the average sampling efficiency and desorption efficiency were 97.53% and 94.94%, respectively by this method. Detection limits were 0.054 μg/mL for the spectrophotometric method and 0.14 mg/m(3) for the determination of silicon tetrahydride in the air of workplace (sampling volume was 7.5 L). The conversion rate of silicon tetrahydride gradually decreased when storage time of samples was extended. The descent rate of sample was less than 10% when the sample was sealed for 7 days in the room temperature. It was concluded that this spectrophotometric method can be successfully used to determine silicon tetrahydride in the worksites.

15.
Article in Chinese | WPRIM | ID: wpr-490144

ABSTRACT

Objective To study the effects of Yizhichan moxibustion on chronic fatigue syndrome (CFS) athletes.Methods 143 patients of CFS were blind randomly devided into3 groups, which were moxibustion of Yizhichan (56 cases) group, general moxibustion group (42 cases), and normal group (45 cases).The normal group was treated by passive massage for relaxation, the moxibustion of Yizhichan group was treated by specific acupoints application of moxibustion of Yizhichan in addition to passive massage;and the general moxibustion groupwas treated by general moxibustion in addition to passive massage.All sample were treated once a day for 6 days in a week.3 weeks was a period of treatment, and the total time of treatment was 15 weeks.Results After treatment, the sleep quality (1.73 ± 0.73, 1.54 ± 0.85 vs.0.83 ± 0.52, F=14.130), time for sleep (1.57 ± 0.60, 1.35 ± 0.60 vs.1.03 ± 0.54, F=5.386), sleep time (1.78 ± 0.71, 1.77 ± 0.61 vs.0.67 ± 0.65, F=19.811), daytime dysfunction (0.78 ± 0.83, 1.64 ± 0.83 vs.1.03 ± 0.83, F=4.798) in the control group, moxibustion of Yizhichan group and a general moxibustion group were statistically significant(P<0.05).The total effective rate of the moxibustion of Yizhichan group was better than the control group and the general moxibustion group (83.8%, 42.2% vs.63.6%;x2=13.973, P=0.001).Conclusion Specific acupoints moxibustion of Yizhichan is a beneficial exploration of moxibustion methods of traditional Chinese medicine, and can improve CFS athletes level of physical health, attention and sleep quality.

16.
Article in Chinese | WPRIM | ID: wpr-465084

ABSTRACT

Objective To observe effects of artemisia argyi moxibustion therapy Yizhichan (one finger Zen) on sleep, attention ability and TCM constitution of athletes suffering chronic fatigue syndrome (CFS);To study the safety intervention model of CFS athletes.Methods Fifty-three cases of CFS athletes were divided into control group of 26 cases and trial group of 27 cases through random single-blind method. The control group was treated with passive gimmick massage relaxation process on waist and limbs. Based on this basic treatment, the trial group was treated with application of artemisia argyi moxibustion therapy Yizhichan. After 3 treatment course, the changes of SCL-90 scale, letter cancellation test, Pittsburgh sleep quality index scale (PSQI), and TCM constitution were observed.Results After treatment, SCL-90 scale, other two factor scores, time of letter cancellation test, PSQI sleep quality, falling sleep time, sleep time, sleep disorder, daytime dysfunction project factor scores of PSQI, and the peaceful constitution had statistical significance between the two groups (P<0.05).Conclusion Specific artemisia argyi moxibustion therapy Yizhichan and fumigation can safely and effectively treat athletes with CFS on physical health, attention level and sleep quality, which is beneficial for the exploration of traditional moxibustion methods.

17.
Article in Chinese | WPRIM | ID: wpr-464565

ABSTRACT

Objective To provide reference of the general physiological index, blood physiology and biochemistry for middle and old-aged cynomolgus monkey.Methods 119 cynomolgus monkey aged from 11~16 (80 were males and 39 were females) were involved in the study.We detected the general physiological index( body weight, the crown-rump length and waist circumference ) , hematology and blood biochemistry parameters respectively and compared these parameters between males and females.Results Between males and females, there were significant differences in Body weight, the crown-rump length and Waist circumference of the general physiological index(P 0.05).Conclusion It provides reference of general physiological index, blood physiology and biochemistry parameters of cynomolgus monkey and basis for their application in biomedical domain.

18.
Chinese Journal of Surgery ; (12): 139-142, 2014.
Article in Chinese | WPRIM | ID: wpr-314719

ABSTRACT

<p><b>OBJECTIVE</b>To evaluate the application value of R.E.N. A.L. nephrometry score for surgery type decisions of T1 stage renal tumor.</p><p><b>METHODS</b>Clinical data including image data, surgery type and prognosis etc were collected retrospectively for 122 cases from January 2010 to December 2012. There were 76 male and 46 female patients and they were 29-82 years (mean 51 years). The body mass index was (22.8 ± 3.9) kg/m(2). The patients were undergoing surgical excision with renal tumor of T1 stage. The R.E.N. A.L. nephrometry score was analyzed to evaluate their relationships to surgery type (RN or NSS) and the approach of NSS (ONSS or LNSS) using chi-square tests, Fisher's exact tests, and logistic regressions analysis.</p><p><b>RESULTS</b>All surgery had been completed. The surgery included RN of 45 patients, LNSS of 45 patients and ONSS of 32 patients. The R.E.N. A.L. nephrometry score was significantly associated with the type of surgery (χ(2) = 27.89, P < 0.05), and the NSS approach (χ(2) = 12.87, P < 0.05). When the scores less than 7 points, it is majorly treated by nephron sparing surgery (92.9%), and when the scores more than 9 points, it is majorly treated by radical nephrectomy (69.4%). Individual component scores were analyzed to evaluate that they were all related to surgery type (χ(2) = 7.00-14.57, P < 0.05), and the individual component N associated the surgery type mostly. Furthermore, individual component R,E,N and L were statistically significant predictors of the NSS approach (χ(2) = 4.92-15.07, P < 0.05).</p><p><b>CONCLUSION</b>The R.E.N. A.L. nephrometry scoring system provides a simple, useful, and stable system to character the salient renal anatomy of T1 stage, and can provide the best surgery approach.</p>


Subject(s)
Adult , Aged , Aged, 80 and over , Female , Humans , Kidney , Pathology , Kidney Neoplasms , Pathology , General Surgery , Male , Middle Aged , Neoplasm Staging , Nephrectomy , Prognosis , Retrospective Studies
19.
Article in Chinese | WPRIM | ID: wpr-286549

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the relationship between occupational stress and depression in migrant workers.</p><p><b>METHODS</b>Migrant workers in the textile industry were selected as subjects, and the self-made Occupational Stress Questionnaire and Self-rating Depression Scale were used to investigate the sex, age, seniority, educational level, and marital status of these subjects. Data analysis was performed by independent-samples t test, analysis of variance, Spearman rank correlation analysis, and stepwise multiple regression analysis.</p><p><b>RESULTS</b>Sex, seniority, and educational level were not influential factors for depression scores. The lower age group had a higher moderate depression score than the higher age group; the unmarried group had a higher moderate depression score than the married group. Severe depression was negatively correlated with decision-making power, psychological job demands, social support, and external pay-return, but positively correlated with skills and internal input; moderate depression was positively correlated with psychological job demands and external pay, but negatively correlated with other factors; mild depression was negatively correlated with all factors. The stepwise regression analysis showed that the influential factors for depression included, from major to minor, supervisor support, skills, internal input, and colleague support, according to the standardized regression coefficients; internal input was the contribution factor, and the remaining ones were negative factors.</p><p><b>CONCLUSION</b>Among migrant workers, certain mental health problems exist, and occupational stress is associated with depression.</p>


Subject(s)
Adolescent , Adult , Aged , Depression , Epidemiology , Female , Humans , Male , Middle Aged , Occupational Diseases , Epidemiology , Stress, Psychological , Epidemiology , Surveys and Questionnaires , Transients and Migrants , Young Adult
20.
Chinese Journal of Zoonoses ; (12): 1039-1044, 2014.
Article in Chinese | WPRIM | ID: wpr-475082

ABSTRACT

Visceral leishmaniasis (VL) is a parasitic disease ,which is still endemic in western China .An earthquake struck south-western China on May 12th ,2008 ,which affected Longnan City of Gansu Province considerably .The objective of this survey is to determine the effect of the Wenchuan earthquake on the Kala-azar epidemic in Longnan City .In this study ,VL cases were collected from 2005 to 2013 and diagnosed on positive test for anti-rK39IgG antibodies by the Kala-azar Detect rK39 dip-stick (InBios ,USA) .The incidence rates were calculated among various counties of Longnan City with SPSS 19 .0 soft-ware .The epidemiological characteristics of the disease were analyzed before and after the Wenchuan earthquake .From 2005 to 2013 ,there were 825 VL cases in Longnan City ,with an annual incidence of 3 .36/100 000 and a significantly higher incidence in males than that in females (P< 0 .001) .All age groups were affected .During this period ,there was an obvious upward trend from 2005 to 2008 ,and a distinct downward tendency since 2010 .The incidences of VL between 2008 and 2010 were sig-nificantly different with that in other years (P<0 .01) .Results revealed that VL was widespread in Longnan City ,which was likely exacerbated by the earthquake in 2008 .Earthquake created diverse natural environment and social circumstances ,w hich may contribute to the spread of the VL epidemic .Together ,our data strongly suggest that the epidemic of VL should be close-ly monitored after earthquake .

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