Abnormal uterine bleeding and associated factors among female medical college students in Shanghai / 中国学校卫生

Objective@#To understand the prevalence and pattern of abnormal uterine bleeding (AUB) among female medical college students in Shanghai，to provide a basis for menstrual health intervention for female college students.@*Methods@#A total of 912 female medical students from a university in Shanghai were selected through cluster sampling. An anonymous questionnaire survey on menstrual history and related factors was conducted in March 2021.@*Results@#The prevalence of AUB among female medical college students was 39.9%, with cycle disordered and non cycle disordered AUB of 24.7% and 15.2%, respectively. Among female college students with AUB, 21.7% had two or three abnormal menstrual symptoms. Multivariate Logistic analysis showed that sleep quality was associated with both types of AUB, and female undergraduates with poorer and poor sleep quality were at increased risk of both cyclic disordered AUB ( OR =2.05) and non cyclic disordered AUB ( OR =2.00). Low BMI ( OR =1.66) and weight gain and loss ( OR =1.76) were associated with cycle disordered AUB. Frequent insomnia ( OR =2.45) was associated with non cyclic disordered AUB( P <0.05).@*Conclusion@#Abnormal uterine bleeding (AUB) is common in female college students, female medical college students with AUB have multiple concurrent abnormal bleeding patterns. Factors associated with AUB varied according to the type of AUB, with sleep quality correlates with both types of AUB.

Impact of artificial intelligence-assisted community-based screening for senile glaucoma on health expenses and medical insurance expenditures in rural areas: health economic evidence from Changjiang Li autonomous county, Hainan province / 中华实验眼科杂志

Objective:To predict the financial impact of artificial intelligence (AI)-assisted community-based screening for primary angle-closure glaucoma (PACG) among the elderly on health expenses and medical insurance expenditures in remote areas of China.Methods:A total of 19 395 people aged more than 65 years old from Changjiang Li autonomous county, Hainan province were enrolled.A health economic model for glaucoma screening in Wenzhou, Zhejiang province was adopted.PACG was classified as suspected primary angle closure, primary angle closure, PACG, monocular blindness and binocular blindness according to its severity.The model was adjusted in combination with the epidemiology, metastasis probability and treatment compliance, screening and referral compliance, sensitivity and specificity of AI screening from glaucoma related literature and using data on local epidemiology and health costs of glaucoma from the Changjiang Hospital of Integrated Traditional Chinese and Western Medicine from 2016 to 2019.The health outcome, total health expenses and medical insurance expenditures of AI-assisted community-based screening and no screening for PACG in 15 years were compared and analyzed.Results:It is found that the AI-assisted community-based screening would prevent disease progression and reduce the number of PACG patients by 43% (134 cases) and blind patients by 50% (9 cases) in 15 years in comparison with no screening.Under the AI-assisted community-based screening system, the early diagnosis and intervention of positive PACG patients will cause the dramatic increase of both total health expenses and medical insurance expenditures compared with no screening in the short term.It was predicted that the increasing trend of medical insurance expenditure would turn to a downward trend and show cost saving advantage at the third year, whereas the declining trend of total health expense would not occur until 10 years later.Without screening, a large number of PACG patients would progress to advanced stages, so the medical costs would continue to rise and exceed the medical costs of the screening system at the 14th year.Conclusions:The AI-assisted community-based screening for PACG is cost-effective and can prevent disease progression, save health expenses and medical insurance expenditures in the long run in remote areas of China.

Progress in the pleiotropic activity of metformin / 药学学报

Metformin, as a first-line drug in the treatment of type 2 diabetes, is widely used in clinic with definite efficacy and few adverse reactions. In recent years, other effects besides hypoglycemia have been found, such as a possible therapeutic effect on mental disorders (e.g., anxiety disorder, Alzheimer's disease), cancer, and cardiovascular disease. It also has regulatory effects on intestinal microbiota. The purpose of this review is to summarize the recent investigations of metformin on mental disorders, cardiovascular diseases, cancer, and intestinal microbiota.

Acupoint selection rules in treating gastroesophageal reflux disease with acupuncture in China based on data mining / 中国针灸

OBJECTIVE@#To analyze the rules of acupoint selection in the treatment of gastroesophageal reflux disease in China using data mining technology.@*METHODS@#The published literature of treating gastroesophageal reflux disease with acupuncture was retrieved from electronic databases from January 1, 1983 to December 1, 2019, including SinoMed, CNKI, Wanfang and VIP database. Acupuncture prescription database was established, and the rules of acupoint selection were explored by statistical software SPSS 20.0 and SPSS Modeler 18.0.@*RESULTS@#A total of 92 articles were included into this analysis, involving 92 acupuncture prescriptions, 76 acupoints. The total frequency of using these acupoints reached 549 times. Zhongwan (CV 12) was the most frequently used acupoint; the often selected meridians were conception vessel, stomach meridian, governor vessel, bladder meridian; the acupoints located at the abdomen, lower limbs and back were commonly selected; crossing points in the specific acupoints were commonly selected; the most frequently used group was Zusanli (ST 36)-Zhongwan (CV 12) and Neiguan (PC 6).@*CONCLUSION@#Treating gastroesophageal reflux disease by acupuncture in China is dominated by

Study on the influence of weakness on perioperative complications of thyroid, breast and hernia surgery in general surgery / 中国医师进修杂志

Objective To investigate the effect of weakness on perioperative complications of thyroid, breast and hernia surgery in general surgery. Methods Patients receiving thyroid breast surgery in Liaoning Provincial People′s Hospital were randomly selected from May 2014 to May 2017. The demographic variables of each patient were recorded, and the demographic variables were stratified. Each group of people was scored with a weakness index (mFI), with complications and serious complications as the dependent variables, and the demographic variables and mFI scores were used as covariates. Cox proportional hazard regression analysis of covariates and dependent variables was performed, the covariates were stratified, and risk factors between subgroups were compared. Results A total of 1 408 patients were eligible for inclusion in the above inclusion criteria. The female population was 801, with an average age of (59.7 ± 11.6) years, an average body mass index (BMI) of (28.7 ± 7.4) kg/m2. Compared with those in low mFI, the risk of complications and serious complications increased significantly (P <0.01) in moderate mFI ( HR=1.60, HR=2.10), and high mFI ( HR=3.36, HR=3.96). Patients with≥80 years old ( HR=1.22, HR=1.33) had a significant increase in the risk of postoperative complications and serious complications ( P < 0.05). Long-term dialysis ( HR=2.20, HR=2.13), long-term application of glucocorticoids ( HR=1.51, HR=2.27) patients had significant risk of complications and serious complications ( P < 0.01). Local anesthesia monitor ( HR=0.63, HR=0.67) reduced the risk of postoperative complications and serious complications (P<0.05). The risk of complications and serious complicationsin patients receiving hernia repair with moderate mFI ( HR=1.88, HR=2.01) and high mFI ( HR=2.12, HR=2.80) was significantly higher than that in patients with lower mFI ( P<0.01). The risk of complications and serious complications in patients of breast cancer with moderate mFI ( HR=1.76, HR=2.43) and high mFI ( HR=1.97, HR=2.38) was significantly higher than that in patients of breast cancer with low mFI ( P<0.01). Patients of thyroid cancer with a high mFI ( HR=6.38) showed a significantly higher risk of postoperative complications, compared with those with a low mFI (P<0.01). Conclusions For patients undergoing surgery for hernia, breast cancer, and thyroid cancer, weakness is associated with perioperative complications.

Effect of progressive early bed exercise on blood flow in lower limb of patients on mechanical ventilation in intensive care unit / 中华危重病急救医学

Objective To investigate the effect of progressive early bed physical activity on blood flow in lower limb of patients on mechanical ventilation in intensive care unit (ICU). Methods Adult patients with mechanical ventilation ≥ 72 hours admitted to ICU of the Affiliated Hospital of Zunyi Medical University from February 22nd to November 30th, 2016 were enrolled. The patients were randomly divided into experimental group and control group by random number table method. Patients in the two groups were given the same basic treatment, including antibiotics, analgesia and sedation, mechanical ventilation, nutritional support, and routine ICU activities such as maintaining functional position of limbs and raising of bed head. On the basis of those, the experimental group was given early bed physical activity with gradual enhancement of grades Ⅰ-Ⅲ according to the nerve, circulation and respiration situations, such as passive/active exercise of the bicycle, straight leg lifting exercise, etc. The exercise intensity was evaluated with target heart rate, and the exercise was performed for 15-30 minutes at a time, twice a day. The control group was given intermittent pneumatic compression (IPC), 30 minutes in each time, twice a day. Mean blood flow and blood volume were measured before and immediately, 5, 10 and 15 minutes after intervention on the 3rd day. Heart rate and blood pressure were measured at 5 minutes before intervention, during 5 minutes, and 5, 10, 15, 30 minutes after intervention on the 3rd day. Results 214 adult patients were selected, after excluding the patients who died during the intervention or gave up treatment, 160 patients were included in the data analysis, with 81 in the experimental group and 79 in the control group. The mean blood flow velocity and blood volume were increased in both groups, and the mean blood flow velocity and blood flow volume in the experimental group were significantly increased and lasted longer than those in the control group [mean blood flow velocity (mm/s) of the experimental group were 11.92±1.06, 18.19±0.17, 17.24±0.14, 15.48±0.12, 12.68±0.16, and that of the control group were 12.01±1.41, 15.65±0.18, 12.91±0.14, 12.13±0.12, 11.59±0.16, respectively, the time effect was F = 1 043.101, P = 0.000, the intervention effect was F = 151.001, P = 0.000, and the interaction effect between intervention and time was F = 224.830, P = 0.001; the blood volume (mL/min) of the experimental group were 3.39±0.96, 5.59±0.11, 5.16±0.12, 4.19±0.10. 3.35±0.09, and that of the control group were 3.28±0.82, 4.04±0.11, 3.40±0.12, 3.02±0.10, 3.00±0.10, respectively, the time effect was F = 680.405, P = 0.000, the intervention effect was F = 125.359, P = 0.000, and the interaction effect between intervention and time was F = 79.631, P = 0.012]. The heart rate and blood pressure of the two groups of patients in the course of intervention were increased first, then decreased and then slowly recovered to the change trend before intervention, but the index of the experimental group fluctuated greatly [heart rate (bpm) of the experimental group were 97.64±1.50, 113.91±1.36, 105.96±1.34, 98.52±1.48, 97.84±1.46, 97.54±1.48, and that of the control group were 97.03±1.57, 105.39±1.38, 96.76±1.35, 96.54±1.50, 97.22±1.48, 96.53±1.49, respectively, the time effect was F = 235.030, P = 0.000, the intervention effect was F = 39.473, P = 0.000, and the interaction effect between intervention and time was F = 3.494, P = 0.063; the systolic blood pressure (mmHg, 1 mmHg = 0.133 kPa) of the experimental group were 118.57±1.06, 133.05±1.01, 120.44±1.10, 117.78±1.07, 117.65±1.01, 118.14±1.00, and that of the control group were 118.10±1.08, 126.68±1.02, 118.23±1.11, 117.48±1.08, 118.04±1.03, 118.90±1.10, respectively, the time effect was F = 336.604, P = 0.000, the intervention effect was F = 26.350, P = 0.000, and the interaction effect between intervention and time was F = 0.948, P = 0.332; the diastolic blood pressure (mmHg) of the experimental group were 68.07±0.72, 72.79±0.73, 70.68±0.74, 69.30±0.72, 68.73±0.74, 67.80±0.73, and that of the control group were 68.51±0.73, 72.03±0.74, 70.05±0.75, 69.10±0.73, 68.41±0.75, 67.85±0.74, respectively, the time effect was F = 286.390, P = 0.000, the intervention effect was F = 4.812, P = 0.000, and the interactive effect between intervention and time was F = 0.055, P = 0.815]. Conclusions The effects of progressive early bed physical activity on the mean blood flow velocity and blood volume of lower limbs in ICU patients with mechanical ventilation are better than those of IPC. Although the fluctuation of heart rate and blood pressure is large, it does not cause any harm to the patients.

Clinical effect of 23 - gauge pas plana vitectomy for delay-onset endophthalmitis following cataract surgery / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To discuss the clinical effect of 23-gauge pas plana vitrectomy ( PPV) for delay-onset endophthalmitis following cataract surgery.? METHODS: This retrospective chart review study included patients with delay-onset endophthalmitis that was present 6wk or more after cataract surgery, who underwent 23-gauge PPV from January 2010 to January 2016 at Renmin Hospital of Wuhan University. The diagnosis was made according to clinical symptoms and signs. The postoperative follow - up results were recorded, including anterior segment examinations, fundus examinations, and best-corrected visual acuity.?RESULTS:Totally 15 patients (15 eyes) were included. The average time between cataract surgery and their eye symptoms of endophthalmitis was 5. 13 ± 2. 41mo. The culture isolates revealed that 9 eyes ( 60％) were cultured positive, anaerobes in 4 eyes (44％), fungal infections in 3 eyes ( 33％) , aerobes in 2 eyes ( 22％) . The mean follow-up period was 12mo. The final visual outcomes were as follows:11 eyes ( 73％) achieved a better vision with PPV; 3 eyes ( 20％) achieved a better vision with PPV, total capsulectomy ( TC ) and IOL removal; 1 eye ( 7％) with PPV, silicone oil tamponade, total capsulectomy ( TC ) and IOL removal was enucleated because of uncontrolled inflammation.?CONCLUSION: The 23-gauge PPV is safe and effective for the management of delay - onset endophthalmitis following cataract surgery. Recurrence rate might be decreased with total capsulectomy and IOL removal.

Calreticulin promotes migration and invasion of nasopharyngeal carcino-ma cells by inducing cell EMT / 中国病理生理杂志

AIM:To observe the expression of calreticulin(CRT)in nasopharyngeal carcinoma tissues,ana-lyze the significance of clinical pathology and the influence on epithelial -mesencymal transition(EMT)of CNE2 cells. METHODS:The expression of calreticulin was detected by immunohistochemistry in 52 nasopharyngeal carcinoma and 57 nasopharyngeal benign tissues,and the significance of clinical pathology was evaluated.The calreticulin gene-specific small interfering RNA was constructed,and then was transfected into the NPC cell line CNE 2 using the cationic liposome meth-od.The effect of CRT on the morphological changes of the CNE 2 cells was observed under light microscope.The effect of CRT on the cell migration and invasion abilities of the CNE 2 cells was detected by Transwell migration and invasion assays. The expression of EMT-related proteins E-cadherin,vimentin,transforming growth factor(TGF)-βand matrix metallopro-teinase(MMP)-9 in the CNE2 cells was determined by Western blot.RESULTS:The positive expression rate of CRT in the benign lesion tissues was 19.29%(11/57),which was significantly increased in the nasopharyngeal carcinoma tissues as 82.69%(43/52).The expression rate of CRT was positively correlated with the stage of nasopharyngeal carcinoma and lymph node metastasis(P<0.05).Knockdown of CRT expression made the CNE 2 cells showing a spindle shape to a flat, cobblestone-like epithelial state change,arranged more compact,and the migration and invasion abilities were significantly decreased(P<0.05).Knockdown of CRT expression resulted in significant increase in the protein expression of E -cadhe-rin,and the decreases in the protein expression of vimentin, TGF-βand MMP-9 in the CNE2 cells(P<0.05).CON-CLUSION:Calreticulin expression in nasopharyngeal carcinoma is significantly higher and positively correlated with naso -pharyngeal carcinoma stage and lymph node metastasis.Calreticulin promotes cell migration and invasion of nasopharyngeal carcinoma CNE2 cells by inducing EMT.

Intervention Effect of Zhuyun Ning RecipeⅡon Insulin Resistance and Inflammatory Factors in Threatened Abortion Patients with Polycystic Ovarian Syndrome / 广州中医药大学学报

Objective To investigate the clinical effect of Zhuyun Ning Recipe Ⅱ in treating spleen-kidney deficiency type of threatened abortion with polycystic ovarian syndrome(PCOS). Methods A total of 40 qualified outpatients and inpatients admitted in the First Affiliated Hospital of Heilongjiang University of Chinese Medicine were included into the study. Twenty patients diagnosed as spleen-kidney deficiency type of threatened abortion with PCOS complicated with insulin resistance (IR) were included into group A, 20 patients with spleen-kidney deficiency type of PCOS non-IR threatened abortion were included into group B,and 20 normal women with early pregnancy were included into group C. Groups A and B were given oral use of Zhuyun Ning RecipeⅡfor 30 days, and group C did not receive any medication. The scores of traditional Chinese medicine (TCM) symptoms, blood beta-human chorionic gonadotropin (β-HCG), serum progesterone, homeostatic model assessment for insulin resistance index(HOMA-IR), interleukin-18(IL-18), and interleukin-20(IL-20) of groups A and B were observed before and after treatment,and were compared to those of group C. Results (1)After treatment for 30 days,the observation indexes of group A were much improved(P < 0.05 or P < 0.01 compared with those before treatment), and the indexes in group B except for HOMA-IR were also improved (P < 0.05 or P < 0.01). The inter-group comparison showed that the differences of blood β-HCG, serum progesterone,and IL-10 were insignificant (P > 0.05);HOMA-IR and IL-18 levels in group A were higher than those in groups B and C, and the differences were significant (P < 0.01). However, the differences of HOMA-IR and IL-18 were insignificant between group B and group C (P > 0.05).(2)During the treatment, neither adverse reaction nor toxic or side effect was found.(3)The follow-up results showed that 5 cases of group A,2 cases of group B,and 4 cases of group C had full-term normal delivery,and the health state of newborn babies was quite well. One case of group A had pregnant diabetes at late pregnant stage,and the other patients of group A got through the middle and late pregnancy,without any pregnant complications. Conclusion Zhuyun Ning Recipe Ⅱ is effective on relieving symptoms of threatened abortion patients with PCOS,and can improve the related laboratory indexes and pregnancy outcomes of the patients.

A study on the tendency of genetic alteration of STR loci in human lung cancer tissues / 中国癌症杂志

Background and purpose: Short tandem repeats (STR) multiplex PCR fluorescence detection technology is the most widely used DNA technology in individual identity and genetic identification. It's the most direct method to obtain accurate conclusions. However, some studies have indicated that the rate of STR mutations in tumor tissue is significantly higher than that in normal tissues or blood. This study aimed to investigate the tendency of genetic instability in 20 STR loci on autosomal and Amel loci in tumor tissue samples from lung cancer. Methods: This study, collected 75 cases of human lung cancer tissues and the adjacent normal tissues. DNA samples were extracted by tissue DNA extraction kit, amplified using MicroreaderTM 21 Direct ID System PCR amplification kit. Capillary electrophoresis was performed using API 3130 analyzer, and results were analyzed by genetic analysis software (Gene Mapper ID V3.2). Results: STR alterations were detected in 24 specimens from 75 lung cancer tissues (32%). Fifty-five alterations were detected in the frequently used 21 STR loci in total, including additional alleles 10 times, loss of heterozygosity 10 times, partial loss of heterozygosity 35 times. Partial loss of heterozygosity was the most common genetic alteration types accounting for 63.64% of the total alteration frequency. And multiple genetic alteration types could occur in the same lung cancer tissue. Among them, the highest alteration frequency occurred on D5S818 (7 times), secondly on D3S1358 and D12S391 (both 5 times), and no alterations on D2S441 and Penta E. Combining the experimental results and analysis on clinical data, this study found the statistical differences between the staging of lung cancer and the age of the patients with the STR loci alterations (P0.05). Conclusion: STR loci of the lung cancer tissue were not stable, and the alteration occurred in the aged or high malignant degree lung cancer tissue more frequently. Meanwhile, no alteration was detected on D2S441 and Penta E. In the future research the two STR loci should be verified to determine whether they can be used as the stable STR loci in such cases by increasing the sample size.

Pulmonary extranodal NK/T-cell lymphoma nasal type:a clinicopathological analysis of 3 cases / 临床与实验病理学杂志

Purpose To improve the knowledge of the clinicopathologic features of pulmonary extranodal NK/T-cell lymphoma (ENKTL).Methods Three cases of pulmonary ENKTL were analyzed retrospectively,medical recordings,imaging manifestations,pathological features,immunophenotypes,EBER in situ hybridizations and other related literatures were reviewed.Results The group was composed of 1 man and 2 women with ages ranging from 52 to 68 years.The clinical symptoms and computed tomography (CT) manifestations were nonspecific.Histological observation showed that atypical lymphocytes in bronchi and parenchyma of the lung were invasively distributed.The neoplasms presented angiocentric and angiodestructive growth patterns with different degrees of inflammatory response and necrosis.For the immunophenotypes,all cases were positive for CD3,CD56 and cytotoxic granule (TIA-1,Perforin,GranB).The positive ratios of CD5 and CD30 were both 2/3.All 3cases showed positive in situ hybridization for Epstein-Barr virusencoded small RNA (EBER).Conclusion Pulmonary extranodal NK/T-cell lymphoma is very rare with poor prognosis and difficult to diagnose.The immunohistochemical staining and molecular pathological.technology may be helpful for the diagnosis and differential diagnosis of the tumors.

Effect of posterior condylar offset on clinical results after posterior-stabilized total knee arthroplasty / 中华创伤杂志(英文版)

<p><b>PURPOSE</b>To determine the effect of the posterior condylar offset (PCO) on clinical results after total knee arthroplasty (TKA) using a high-flex posterior-stabilized (PS) fixed-bearing prosthesis.</p><p><b>METHODS</b>We prospectively studied the clinical and radiographic materials of 89 consecutive female patients (89 knees), who had undergone primary TKAs for end-stage osteoarthritis. All operations were performed by a single senior surgeon or under his supervision using the same operative technique. Based on the corrected PCO change, we divided all cases into two groups: group A (corrected PCO change ≥0 mm, 58 knees) and group B (corrected PCO change<0 mm, 31 knees). One-year postoperatively, clinical and radiographic variables from the two groups were compared by independent t-test. The associations between the corrected PCO changes and the improvements of clinical variables in all patients were analyzed by Pearson linear correlation.</p><p><b>RESULTS</b>One-year postoperatively, the Knee Society Scores, the Western Ontario and McMaster Universities Osteoarthritis Index, non-weight-bearing active and passive range of knee flexion, flexion contracture, extensor lag, and their improvements had no statistical differences between the two groups (all p>0.05). The corrected PCO change was not significantly correlated with the improvement of any clinical variable (all p>0.05). Group A demonstrated greater flexion than group B during active weight bearing (p<0.05).</p><p><b>CONCLUSIONS</b>Restoration of PCO plays an important role in the optimization of active knee flexion during weight-bearing conditions after posterior-stabilized TKA, while it has no benefit to non-weight-bearing knee flexion or any other clinical result.</p>

Water extract from Codonopsis thalictrifolia wall affects the reproductive system of male infant rats / 中华男科学杂志

<p><b>OBJECTIVE</b>To study the impact of the water extract from Codonopsis thalictrifolia Wall (CTW) on the reproductive</p><p><b>METHODS</b>We divided 32 male SD infant rats into four groups of equal number to be treated intragastrical-system of male infant rats. ly with distilled water (control) and CTW at 10 g/kg (low dose) , 20 g/kg (medium dose), and 40 g/kg (high dose), respectively, twice a day for 2 weeks. Then we killed the rats, measured the levels of testosterone (T), luteinizing hormone (LH) and follicle-stimulating hormone (FSH) in the serum, obtained the testis weight, body weight, testis visceral coefficient and sperm concentration, and detected sperm viability, sperm motility and the level of cyclic adenosine monophosphate (cAMP) in the Leydig cells, followed by</p><p><b>RESULTS</b>Compared with the control group, the low-dose, me-analysis of differences among different groups using the SPSS software. Medium-dose and high-dose CTW groups showed significant decreases in the serum T level ([3.09 +/-0.42] vs [1.22 +/-0. 32] , [1.06 +/- 0.29] and [0.57 +/-0.18] nmol/L, P<0.01), testis weight ([1.40 +/-0.16] vs [0.96 +/-0.09], [0.92 +/-0.11] and [0.91 +/- 0.08] g, P <0.01), and sperm concentration ([1.03 +/-0.16] vs [0.19 +/-0.07], [0.17 +/-0.08] and [0.16 +/-0.07] x 10(6)/ml, P <0.01), but a dramatic elevation in the testis visceral coefficient ([42.22 +/- 3.02] vs [51.39 +/- 3.09], [52.28 +/- 4.86] and [54.13 +/-6.06] mg/10 g, P <0.01); the medium- and high-dose CTW groups exhibited remarkable increases in the levels of serum LH ([13.62+/-0.89] vs [14.69 +/-0.12] and [14.93 +/-0.28] ng/L, P<0.01) and FSH ([4.32 +/-0.18] vs [4.77 +/-0.23] and [4.89 +/-0. 38] IU/L, P <0.05); all the three CTW groups showed markedly inhibited serum T secretion ([1.85 +/- 0.18] vs [1.42 +/-0.15], [1.12+/-0.18] and [0.88 +/-0.21] nmol/L, P<0.01) and intracellular cAMP ([5.51 +/-0.12] vs [4.39+/-0.06], [4.28 +/-0.07] and [4.11 +/- 0.10] nmol/L, P <0.01) in the Leydig cells.</p><p><b>CONCLUSION</b>The water extract from CTW may reduce the synthesis of testosterone in the serum of male infant rats through the PKA pathway and consequently inhibit their testicular development and sperm production and affect the development of their reproductive system.</p>

Effect of artificial musk aqueous extract on the expressions of inflammatory mediators released from lipopolysaccharide-stimulated RAW264.7 cells / 中国医学科学院学报

<p><b>OBJECTIVE</b>To identify the anti-inflammatory effects of artificial musk aqueous extract(AME)on lipopolysaccharide-stimulated cytokines secreted or released by RAW264.7 cells.</p><p><b>METHODS</b>Cytokines including interleukin(IL)-6,IL-10,and tumor necrosis factor Α were determined using cytokine enzyme-linked immunosorbent assay kits.</p><p><b>RESULT</b>Compared with model group,the levels of major cytokines such as tumor necrosis factor Α,IL-6,and IL-10 significantly decreased in different AME groups in a dose-dependent manner.</p><p><b>CONCLUSION</b>In lipopolysaccharide-stimulated RAW264.7 macrophages,AME can remarkably inhibit the release of inflammatory cytokines and thus exerts its anti-inflammatory effects.</p>

High performance liquid chromatography characteristic spectrum of artificial musk / 中国医学科学院学报

<p><b>OBJECTIVE</b>To determine the high performance liquid chromatography(HPLC)characteristic spectrum of artificial musk.</p><p><b>METHODS</b>HPLC was performed on a HiQ Sil C18 analytical column(4.6 mm×250 mm)with the mobile phase of methanol/water(90:10 v/v);the detection wavelength was 254 nm and the column temperature was maintained at 25 ℃. The similarities among 10 batches of artificial musk samples were anlysised in accordance with the System for Evaluating the Similarities among the Chromatographic Fingerprints of Traditional Chinese Drugs,which is recommended by Chinese Pharmacopoeia Commission.</p><p><b>RESULT</b>The similarities among these 10 batches of artificial musk ranged between 0.999 and 1.000.</p><p><b>CONCLUSION</b>HPLC is a convenient,accurate and reliable technique for establishing the specific spectum of artificial musk and therefore can be used for the quality control of this product.</p>

Determination of the content of residual solvents in Haikesu I by head-space gas chromatography / 中国医学科学院学报

<p><b>OBJECTIVE</b>To explore the usefulness of head-space gas chromatography for the determination of methanol and ethanol in Haikesu I,a raw material of artificial musk.</p><p><b>METHODS</b>The determination was performed on HP-5(30 m×0.53 mm,5 Μm)capillary column with an hydrogen flame ionization detector. The solvent was dimethyl sulfoxide and the internal standard was acetone. The injector temperature and the detector temperature were controlled at 180 ℃ and 250 ℃,respectively. The carrier gas was nitrogen. The containers of head-space injector were preheated at 90 ℃ for 15 minutes. The column temperature was programmed raised,which achieved baseline separation of the components.</p><p><b>RESULTS</b>The results showed a good linear relationship for methanol and ethanol in their linearity range;and the limit of detection was 0.8 and 1.0 Μg/ml,respectively. The precision and average recoveries were satisfactory.</p><p><b>CONCLUSION</b>The head-space gas chromatography is simple,rapid,and precise technique for the measurement of residual solvents in Haikesu I.</p>

Determination of the content of residual solvents in Haikesu 2 by head-space gas chromatography / 中国医学科学院学报

<p><b>OBJECTIVE</b>To determine ethylacetate and petroleum ether(60-90 ℃)in Haikesu 2,which is one of the raw materials of artificial musk,using the head-space gas chromatography.</p><p><b>METHODS</b>The determination was performed on HP-5(30 m×0.53 mm,5 Μm)capillary column with an hydrogen flame ionization detector. The solvent was dimethyl sulfoxide and the internal standard was methanol. The injector temperature and the detector temperature were controlled at 180 ℃ and 250 ℃,respectively. The carrier gas was nitrogen. The containers of head-space injector were preheated at 90 ℃ for 15 minutes. The column temperature was programmed raised,which achieved baseline separation of the components.</p><p><b>RESULTS</b>The results showed a good linear relationship for ethylacetate and petroleum ether(60-90 ℃)in their linearity range;and the limit of detection was 0.7 and 0.3 Μg/ml,respectively. The good precision and good average recoveries were satisfactory.</p><p><b>CONCLUSION</b>The head-space gas chromatography is simple,rapid,and precise technique for the measurement of residual solvents in Haikesu 2.</p>

Determination of the content of residual solvents in muscone by head-space gas chromatography / 中国医学科学院学报

<p><b>OBJECTIVE</b>To explore the usefulness of a head-space gas chromatography in the determination of residual solvents including methanol,ethanol,ethyl ether,and petroleum ether in muscone in artificial musk.</p><p><b>METHODS</b>The head-space gas chromatography was performed on HP-5(30 m×0.53 mm,5 Μm)capillary column with a hydrogen flame ionization detector. The carrier gas was nitrogen and the solvent was dimethyl sulfoxide. The injector temperature and the detector temperature were controlled at 180 ℃ and 250 ℃,respectively. The containers of head-space injector were preheated at 80 ℃ for 15 minutes. The column temperature was programmed raised,which achieved baseline separation of the components.</p><p><b>RESULTS</b>The results showed a good linear relationship for methanol,ethanol,ethyl ether,and petroleum ether(60-90 ℃)in the range of each consistency; and the limit of detection was 0.8,1.0,0.1,and 0.3 Μg/ml,respectively. The precision and average recoveries were satisfactory.</p><p><b>CONCLUSION</b>The head-space gas chromatography is simple,rapid,and precise technique for measuring residual solvents in muscone.</p>

Determination of the contents of five heavy metals in artificial musk / 中国医学科学院学报

<p><b>OBJECTIVE</b>To evaluate the safety of artificial musk by determining its content of five hazard heavy metals.</p><p><b>METHOD</b>The contents of Pb, Cd,As,Hg,and Cu in artificial musk were detected using inductively coupled plasma-mass spectrometry.</p><p><b>RESULT</b>The contents of Pb,Cd,As,Hg,and Cu was less than 0.35,0.05,0.30,0.20,and 4.50 mg/kg in artificial musk.</p><p><b>CONCLUSION</b>Artificial musk has low contents of heavy metals and therefore meets the safety and quality requirments.</p>

Influence of coping style on sleep quality and blood pressure in male population with high normal value blood pressure / 心血管康复医学杂志

Objective: To explore influence of coping style on sleep quality and blood pressure in community male population with high normal value blood pressure. Methods: The Pittsburgh sleep quality index (PSQI) and coping style questionnaire (CSQ) were used to assess 120 men with high normal blood pressure in community. With PSQI>7 scores as criterion for judging sleep quality disorders, the subjects were divided into sleep disorder group (n=51) and normal sleep group (n=69), and sleep disorder group received psychological intervention. Results: Sleep disorders existed in 42.5% male population with high normal blood pressure. Compared with normal sleep group, there was significant increase in PSQI [（6.43±2.59）scores vs. (8.33±3.14）scores] and diastolic blood pressure [(81.00±8.91) mmHg vs. (88.00±5.69) mmHg] and significant decrease in factor scores of “problem solving” [(0.76±0.21) scores vs. (0.61±0.18) scores] and “asking for help” [(0.52±0.26) scores vs. (0.41±0.11) scores] in sleep disorder group, P<0.05 all; Compared with before intervention there were significant increase in scores of “problem solving” [(0.61±0.18) scores vs. (0.71±0.12) scores]and “asking for help” [(0.41±0.11) scores vs. ( 0.51±0.13) scores]and significant decrease in PSQI score [(8.33±3.14) scores vs. (7.41±2.37) scores] and diastolic blood pressure [(88±5.69)mmHg vs. (80± 4.17)mmHg] after psychological intervention 12 weeks in sleep disorder group, P<0.05 all. Conclusion: Psychological intervention may improve sleep quality and reduce blood pressure in community male population with high normal value blood pressure.