ObjectiveTo determine the death level， change trend and life loss of pancreatic cancer among residents in Yuyao， and to provide scientific reference for the prevention and control of pancreatic cancer. MethodsThe death monitoring data of registered residents in Yuyao from 2014 to 2021 were collected to calculate crude mortality rate（CMR）， standardized mortality rate （SMR）， potential years of life lost （PYLL）， average years of life lost （AYLL）， PYLL rate （PYLLR）， average annual percent change （AAPC） and other indicators. ResultsFrom 2014 to 2021， 860 cases of pancreatic cancer died in Yuyao， accounting for 6.25% of all malignant tumor deaths in the same period. The average annual mortality rate was 12.86/100 000， the age-standardized rate by Chinese standard population （ASRC） was 7.08/100 000， and the age-standardized rate by world Segi’s population （ASRW） was 5.17/100 1000. The CMR showed an upward trend in eight years （t=-5.076， P=0.002）. 493 men died of pancreatic cancer with an average annual mortality of 14.95/100 000， ASRC of 8.13/100 000， and ASRW was of 6.24/100 000. 367 women died of pancreatic cancer with an average annual mortality rate of 10.82/100 000， ASRC of 6.02/100 000， and ASRW of 4.14/100 000. The mortality rate of men was higher than that of women （χ²=22.191， P<0.001）. The minimum death age of pancreatic cancer is 27.52 years old， the maximum death age is 94.52 years old， and median age （Q₁， Q₂） of death was ［71.13（63.21， 78.87）］ years old. The death age of men ［69.61（62.30， 77.06）］ was less than that of women ［72.48（64.63， 81.09）］ （t=-3.820， P<0.001）. The mortality rate of pancreatic cancer showed an upward trend with age （χ²_trend=1 110.844， P<0.001）， and the 75 year old mortality rate （75.58/100 000） fell after reaching the peak. PYLL caused by death of pancreatic cancer in 8 years was 9 775.00 person years， AYLL was 14.33 person years， and PYLLR was1.53‰. ConclusionPancreatic cancer is an important cause of death for residents in Yuyao， which has a huge loss of life. It is necessary to formulate targeted prevention and control strategies， with the middle-aged and elderly as the key population， to reduce the incidence and death of pancreatic cancer.

Objective: To study the clinical effect of laparoscopic excision of ovarian cyst in the treatment of patients with ovarian cyst. Methods: From August 2016 to August 2018, 106 patients with ovarian cyst were selected in the Second People's Hospital of Yuyao.According to the different operation methods, 106 patients were divided into two groups, with 53 cases in each group.The control group was treated with open excision of ovarian cyst.The observation group was treated by laparoscopic excision of ovarian cyst.The clinical effect was observed and compared between the two groups. Results: In the observation group, the time of operation, the amount of blood lost during operation, the time of anal exhaust, the time of getting out of bed and the time of hospitalization were (38.95±3.64)min, (45.12±4.48)mL, (1.01±0.08)d, (30.58±3.07)h, (4.97±0.46)d, respectively, which in the control group were (59.72±5.33)min, (86.62±8.52)mL, (2.07±0.20)d, (44.20±4.28)h, (7.14±0.72)d, respectively, the differences between the two groups were statistically significant(t=23.242, 31.386, 35.825, 18.825, 18.490, all P<0.05). The pregnancy rate in the observation group was 79.25%(42/53), which in the control group was 49.06%(26/53), the difference was statistically significant(χ²=10.502, P<0.01). Conclusion Laparoscopic excision of ovarian cyst can shorten the operation time, anal exhaust time, the time of getting out of bed after operation, hospital stay, reduce the amount of bleeding and improve the pregnancy rate of the patients.

Objective: To describe online learning and eye strain situation of college students during the COVID-19 outbreak, to provide a scientific basis for guiding students eye health. Methods: A self-filled electronic questionnaire survey through questionnaire star was administered to college students across China. Information about online learning and eye strain of 1 046 college students during the epidemic was collected in Hefei, Anhui Province from March 16 to 20, 2020. The univariate and multivariate Logistic regression analysis were performed to analyze the association between online learning and eye strain of college students. Results: The rate of eye strain during online learning was 72.1%, totally of 68.4% in 421 male students and 74.6% in 625 female students. Boys with online learning time <6 h/d, slow internet access，difficulty in understanding online class reported higher rate of eye strain than girls( χ 2=17.36,8.72,7.02, P ＜0.05). Freshmen reported the highest rate of slow internet access occasionally and active online class( χ 2=15.26,16.11, P ＜0.05), junior students reported highest rate of online learning time <6 h/d, and easy understandable online class( χ 2=15.33,32.59, P ＜0.05), medical college students reported higher rate of slow internet access, inactive online class than non-medical college students( χ 2=11.79,11.03, P ＜0.05). Multivariate Logistic regression analysis showed that odds ratio( OR ) of eye strain in females was 1.40 (1.06-1.87), compared with males; the OR of eye strain were 1.43 (1.01-2.03) and 1.54 (1.10-2.15) in the groups with online learning time 6-<8 h/d and ≥8 h/d, respectively, compared with the group with online learning time <6 h/d, the OR of eye strain in the groups with slow internet access was 2.28 (1.25-4.14), compared with students without slow internet access, the OR of eye strain in the capable to understand and difficult to understand group were 2.54 (1.73-3.74) and 5.40 (2.70-10.80) respectively, compared with the easy to understand group. Conclusion Female students, online learing time ≥ 8 h/d, slow internet access, difficult to understand class content were positively related with college students eye strain. Attention should be paid to the eye health of college students to reduce the adverse effects of online learning on vision.during the COVID-19 epidemic.

OBJECTIVETo determine the levels of MMP-2 and COX-2 mRNA in bladder transitional cell carcinoma tissues and explore their relationship.

METHODSWe enrolled in this study 42 patients with bladder transitional cell carcinoma, including Ta-T1 (n = 18), T2-T4 (n = 24), G1 (n = 12), G2 (n = 19), G3 (n = 11), metastasis (n =26) and non-metastasis (n = 16). Another 5 cases of normal bladder tissues were taken as controls, and the levels of MMP-2 and COX-2 mRNA were detected by RT-PCR.

RESULTSThe relative expressions of COX-2 mRNA were 1.038 +/- 0. 484 in Ta-T1, 1.489 +/- 0.584 in T2-T4, 0.920 +/- 0.442 in G1, 1.338 +/- 0.584 in G2 and 1.632 +/- 0.515 in G3, all significantly higher than that of the controls (0.460 +/- 0.224, P < 0.05). And the corresponding relative levels of MMP-2 mRNA were 1.107 +/- 0.384, 1.604 +/- 0.425, 0.971 +/- 0.370, 1.445 +/- 0.378 and 1.755 +/- 0.387, also significantly higher than that of the latter group (0.423 +/- 0.227, P < 0.05). The COX-2 and MMP-2 mRNA levels in the tumor tissues with and without metastasis were 1.591 +/- 0.455 vs 0.815 +/- 0.430 and 1.676 +/- 0.339 vs 0.927 +/- 0.228, (P < 0.01), respectively, with a positive correlation between the mRNA level of COX-2 and that of MMP-2 (r = 0. 703, P < 0.01).

CONCLUSIONMMP-2 and COX-2 mRNA are highly expressed in bladder transitional cell carcinoma tissues and their expressions are positively correlated with the degree of malignancy. MMP-2 and COX-2 might play a synergetic role in the pathogenesis and progression of bladder transitional cell carcinoma.

Adult ; Aged ; Carcinoma, Transitional Cell ; metabolism ; pathology ; Cyclooxygenase 2 ; biosynthesis ; genetics ; Female ; Humans ; Matrix Metalloproteinase 2 ; biosynthesis ; genetics ; Middle Aged ; Neoplasm Staging ; RNA, Messenger ; genetics ; Urinary Bladder Neoplasms ; metabolism ; pathology

Cases of 2019-nCoV nucleic acid and antibody (IgM and IgG total antibody) after discharge from a hospital in Chongqing were continuously monitored. It was found that 5 cases of "re-positive" phenomenon, 5 cases of antibody were positive, and there was a trend of increasing with time. "Re-Positive" may be related to the following three factors. Children with asymptomatic infection had a long time of fecal detoxification.There were two consecutive nucleic acid tests "false negative" caused by various reasons.The virus clearance in patients was not complete, and the discharge standard was not conservative enough. The analysis of the causes of "Re-Positive" patients and the discussion of its infection will help us reveal more characteristics of this virus, and to provide a new basis for the discharge standard in the constantly updated diagnosis and treatment programme.

Objective:To study the origin traceability of anemarrhenae rhizoma from Bozhou and Hebei based on multi-element fingerprints technology , and establish a discrimination model .Methods:The contents of 48 elements were determined by using induc-tively coupled plasma mass spectrometry ( ICP-MS) for 44 samples of anemarrhenae rhizome from Bozhou and Hebei province .Princi-pal component analysis ( PCA) and orthogonal partial least squares discrimination analysis ( OPLS-DA) were applied in the data analy-sis to screen out the significant elements .And then Fisher linear discrimination analysis was used to determine the origin of anemarrhe-nae rhizoma and the discrimination models were developed .Results:Two discrimination models were developed by the discrimination a-nalysis of the whole model method with nine significant elements identified by PCA and OPLS -DA, and 100％correct classification and 95.5％cross validation were achieved by the models .Conclusion: It is a promising approach to classify the geographical origin of anemarrhenae rhizome based on multi-element fingerprints analysis combined with multivariate statistical analysis .The discrimination models are good enough to be applied in the origin traceability of anemarrhenae rhizome.

To evaluate the value of automatic breast volume scanner (ABVS) and mammography (MG) in differential diagnosis for small breast lesions with breast imaging reporting and data system ultrasound (BI-RADS-US) 4.
 Methods: ABVS and MG were performed for 103 patients with 109 breast lesions, which were classified as BI-RADS-US 4 by conventional ultrasound (US). Postoperative pathological diagnosis served as gold standard. The diagnostic efficacy for US, US combined with MG, US combined with ABVS and the combination of three methods were compared.
 Results: The sensitivity of US, US combined with MG, US combined with ABVS and the combination of three methods were 85.5%, 86.8%, 94.7% and 96.0%, respectively. The specificity for them were 66.7%, 69.7%, 81.8% and 84.9%, respectively. The accuracy for them were 79.8%, 81.6%, 90.8% and 92.7%, respectively. The area under the receiver operating characteristic (ROC) curve (AUC) for them were 0.76, 0.78, 0.88 and 0.90, respectively. The accuracy and AUC for US combined with ABVS in differential diagnosis of BI-RADS-US 4 small breast lesions were significantly higher than those of US and US combined with MG (P<0.05). There was no significant difference in sensitivity and specificity among these 3 groups (P>0.05). No significant difference was found in sensitivity, specificity, accuracy, and AUC between US combined with ABVS and the combination of three methods (P>0.05).
 Conclusion: Combination of US with ABVS can improve the diagnostic efficacy of conventional US in differential diagnosis for BI-RADS-US 4 small breast lesions, and it is superior to US combined with MG.
Breast ; diagnostic imaging ; Breast Neoplasms ; diagnostic imaging ; Female ; Humans ; Mammography ; Reproducibility of Results ; Sensitivity and Specificity ; Ultrasonography, Mammary

Deep brain stimulation (DBS) is an invasive treatment that involves implanting electrodes into the brain to electrically stimulate specific brain regions, bringing new hope for the treatment of motor and psychiatric neurological diseases. This technology is closely related to human consciousness and has sparked heated debates on topics such as consciousness autonomy and personality integrity. Starting from the core principles of protecting patients, this paper explored the controversial issues of consciousness autonomy and medical autonomy principles in DBS practice, and discussed the ethical considerations in informed consent, patient inclusion, information collection, and cutting-edge scientific fields from the perspectives of patients, clinicians, and researchers.

The protection of language function is one of the major challenges of brain surgery. Over the past century, neurosurgeons have attempted to seek the optimal strategy for the preoperative and intraoperative identification of language-related brain regions. Neurosurgeons have investigated the neural mechanism of language, developed neurolinguistics theory, and provided unique evidence to further understand the neural basis of language functions by using intraoperative cortical and subcortical electrical stimulation. With the emergence of modern neuroscience techniques and dramatic advances in language models over the last 25 years, novel language mapping methods have been applied in the neurosurgical practice to help neurosurgeons protect the brain and reduce morbidity. The rapid advancements in brain-computer interface have provided the perfect platform for the combination of neurosurgery and neurolinguistics. In this review, the history of neurolinguistics models, advancements in modern technology, role of neurosurgery in language mapping, and modern language mapping methods (including noninvasive neuroimaging techniques and invasive cortical electroencephalogram) are presented.
Brain Mapping ; Brain Neoplasms ; Humans ; Language ; Neurosurgery ; Neurosurgical Procedures

Humans ; Gastrointestinal Microbiome ; Constipation/therapy* ; Probiotics/therapeutic use* ; Patients