ObjectiveTo investigate the relationship between intramural gallstones and intraluminal gallstones. MethodsIn this present study, the control study was applied to analysis on the gallstones from 116 cholecystolithiasis patients with intramural gallstones as well as intraluminal gallstones. All the patients were from the general surgery department and accepted gallbladder-preserving cholecystolithotomy during 2009.02-2009.08. Meanwhile, 171 patients with intraluminal gallstones were investigated the clinical traits; and gallstones from them were analyzed with FT-IR and microsopic examination. ResultsThe results showed the coincidence rate of stone type was 97.4％, and it was mainly pigment gallstones and mixed gallstones in 116 cases; the coincident detection rate of clonorchis sinensis eggs was 98.3 ％, and it was much higher in the pigment gallstones and mixed gallstones than that in the cholesterol gallstones. The ratio of pigment gallstones from the 116 patients group was higher than the 171 patients group, and the detection rate of C. sinensis eggs of the two groups had no statistical difference (P＞0.05). ConclusionsThe stone type of intramural gallstones was mainly pigment gallstones and mixed gallstones. Intramural gallstones and intraluminal gallstones were homologous.

Aim To observe the effects of rapamycin (Rapa) and starvation-induced autophagy on the morphology of neuronal cells, tau protein aggregation and expression of phosphorylated tau protein, to explore the possible mechanism of cytoprotective effect of these two classical autophagy inducers on phosphorylated tau expressing cells.Methods N2a cells were transfected with GFP-tau plasmid, and equal amount of empty vector was used as control.Then cells were incubated with or without okadaic acid(OA) for 12 h, followed by treatment with autophagy inducers rapamycin(Rapa) and EBSS, autophagy inhibitor Bafilomycin A1(Baf A1) for 6 h.DAB was used to observe tau expression and cell morphology.Confocal microscopy was used to observe the intracellular tau aggregation.TUNEL assay and cleaved caspase-3 level were used to detect cell apoptosis.Immunoblot was used to detect the expression of phosphorylated tau and autophagy-related proteins.Results Our study showed that the N2a cells treated with OA exhibited small cell body, retracted processes and increased tau aggregation, compared with only tau-expressing cells.Rapa and EBSS treatment significantly improved cell morphology, decreased tau aggregation and reduced cell apoptosis.On the contrary, Baf A1 treatment induced aberrant cell shape and increased tau aggregation and cell apoptosis.In addition, Rapa significantly decreased the high molecular weight, phosphorylated tau whereas EBSS especially decreased the low molecular weight phosphorylated tau.Conclusions Rapa and EBSS is alleviate hyperphosphorylated tau-induced cytotoxicity through different mechanism.Rapamycin mainly decreases phosphorylated tau oligomers, while EBSS liable to decrease the soluble phosphorylated tau.

Objective: To understand the changing trend and influencing factors of health literacy among residents in Hangzhou from 2016 to 2020, so as to provide basis for health literacy promotion. Methods: The monitoring data of health literacy of residents in Hangzhou from 2016 to 2020 were collected. The five year cumulative growth and average growth rate were used to reflect the changing trend. The multivariate logistic regression model under complex survey design was used to analyze the influencing factors for health literacy. Results: From 2016 to 2020, the health literacy levels of Hangzhou residents were 26.91%, 29.49%, 31.83%, 34.73% and 38.00%, respectively. The five year cumulative growth was 11.09% and the average growth rate was 9.01%. Among three aspects of health literacy, the levels of basic knowledge and concept as well as healthy lifestyle and behaviors increased year by year (P<0.05), with the average growth rates of 15.12% and 2.92%. Among six types of health problems, the levels of chronic disease prevention and treatment, basic medical treatment, scientific view, health information as well as safety and first aid increased year by year ( P<0.05 ), with the average growth rates of 32.76%, 15.82%, 8.41%, 7.12% and 1.53%, respectively. The multivariate logistic regression analysis showed that education level ( junior high school, OR=5.359, 95%CI: 1.151-24.953;high school/vocational high school/technical secondary school, OR=9.214, 95%CI: 2.906-29.213; college or above, OR=29.977, 95%CI: 9.689-92.741 ) and occupation ( students, OR=2.564, 95%CI: 1.113-5.907 ) were the influencing factors for health literacy. Conclusion The health literacy levels of Hangzhou residents from 2016 to 2020 have been increasing year by year. The residents with higher education levels and students may have higher health literacy levels.

Objective: To analyze knowledge, attitudes and practice regarding protection against COVID-19 among primary and middle school students in Hangzhou and to provide a scientific basis for schools to carry out targeted prevention and control measures. Methods: Anonymous network sampling survey was carried out through the questionnaire star, and a total of 14 216 subjects from primary and middle school in Hangzhou were recruited to fill in the questionnaire regarding knowledge, attitudes and practice of COVID-19 from March 3 to March 7, 2020. Results: Primary and middle school students showed high awareness rate of transmission (85.83%) and incubation period (77.44%), but lower awareness on symptoms (44.70%) of COVID-19. The practice of wearing masks, cough etiquette and correct hand washing were 97.27%, 88.01% and 91.82%, respectively. The protective practice among primary and middle school students were generally good, 91.21% of them were at moderate level or above. 83.91% of primary and secondary school students reported worries about infection of COVID-19, and 55.42% of primary and secondary school students were anxious about returning to school. Primary school students and rural students were more anxious about returning to school(χ 2=46.66, 26.70, P<0.05). Conclusion The primary and middle school students in Hangzhou have a relatively good level of knowledge and practice concerning COVID-19. Yet, it is necessary to carry out targeted health education and strengthen mental health education for primary and middle school students.

Pituitary neuroendocrine tumors (PitNETs) are the second common central nervous system tumors. Patients often present with headache, vision loss, visual field defects, and cognitive dysfunction. Cognitive function is the ability of the brain to acquire, analyze and process external information; once the patient has serious cognitive dysfunction, it will bring heavy burden to the family and society. This article summarizes the cognitive functions in patients with PitNETs from perspectives of hormone, anatomical structures around the pituitary, tumor volume, treatment, and cognitive function assessment, in order to provide research ideas in elucidating relevant mechanisms in the future and provide basis for formulating rehabilitation plans for patients.

BACKGROUNDBreast cancer has become one of the most common malignant tumors among females over the past several years. Breast carcinogenesis is a continuous process, which is featured by the normal epithelium progressing to premalignant lesions and then to invasive breast cancer (IBC). Targeting premalignant lesions is an effective strategy to prevent breast cancer. The establishment of animal models is critical to study the mechanisms of breast carcinogenesis, which will facilitate research on breast cancer prevention and drug behaviors. In this study, we established a feasible chemically-induced rat model of premalignant breast cancer.

METHODSFollowing the administration of the drugs (carcinogen, estrogen, and progestogen) to Sprague-Dawley (SD) rats, tumors or suspicious tumors were identified by palpation or ultrasound imaging, and were surgically excised for pathological evaluation. A series of four consecutive steps were carried out in order to determine the carcinogen: 7,12-dimethylbenzaanthracene (DMBA) or 1-methyl-1-nitrosourea, the route of carcinogen administration, the administration period of estrogen and progestogen, and the DMBA dosage.

RESULTSStable premalignant lesions can be induced in SD rats on administration of DMBA (15 mg/kg, administered three times) followed by administration of female hormones 5-day cycle.

RESULTSwere confirmed by ultrasound and palpation.

CONCLUSIONUnder the premise of drug dose and cycle, DMBA combined with estrogen and progestogen can be used as a SD rat model for breast premalignant lesions.

9,10-Dimethyl-1,2-benzanthracene ; Animals ; Breast Diseases ; chemically induced ; Disease Models, Animal ; Female ; Mammary Neoplasms, Experimental ; chemically induced ; Rats ; Rats, Sprague-Dawley

MicroRNAs (miRNAs) are a type of small non-coding RNAs that are often play important roles in carcinogenesis, but the carcinogenic mechanism of miRNAs is still unclear. This study will investigate the function and the mechanism of miR-638 in carcinoma (GC). The expression of miR-638 in GC and the DNA copy number of miR-638 were detected by real-time PCR. The effect of miR-638 on cell proliferation was measured by counting kit-8 assay. Different assays, including bioinformatics algorithms (TargetScan and miRanda), luciferase report assay and Western blotting, were used to identify the target gene of miR-638 in GC. The expression of miR-638 target gene in clinical CRC tissues was also validated by immunohistochemical assay. From this research, we found that miR-638 was downregulated in GC tissues compared with corresponding noncancerous tissues (NCTs), and the DNA copy number of miR-638 was lower in GC than NCTs, which may induce the corresponding downregulation of miR-638 in GC. Ectopic expression of miR-638 inhibited GC cell growth in vitro. Subsequently, we identified that PLD1 is the target gene of miR-638 in GC, and silencing PLD1 expression phenocopied the inhibitory effect of miR-638 on GC cell proliferation. Furthermore, we observed that PLD1 was overexpressed in GC tissues, and high expression of PLD1 in GC predicted poor overall survival. In summary, we revealed that miR-638 functions as a tumor suppressor in GC through inhibiting PLD1.
3' Untranslated Regions ; genetics ; Apoptosis ; genetics ; Base Sequence ; Cell Line, Tumor ; Cell Proliferation ; genetics ; Down-Regulation ; genetics ; Humans ; MicroRNAs ; genetics ; Phospholipase D ; genetics ; Prognosis ; Stomach Neoplasms ; diagnosis ; enzymology ; genetics ; pathology

Objective     To verify the feasibility and accuracy of the "lung surface intersegmental constant proportion landmarks", developed by our center, in identifying intersegmental planes during pulmonary segmentectomy. Methods    We prospectively enrolled the patients who planned to receive thoracoscopic segmentectomy in West China Hospital of Sichuan University and The Third People's Hospital of Chengdu from September 2021 to October 2021. We took a relatively objective and feasible method, intravenous injection of indocyanine green, in identifying intersegmental planes as standard control. We intraoperatively judged the consistency between "lung surface intersegmental constant proportion landmarks" and intravenous injection of indocyanine green in identifying intersegmental planes. We discerned main landmarks of intersegmental plane by the constant proportion segment module, which was built based on the "lung surface intersegmental constant proportion landmarks", as well as distinguished the planes with discrepant fluorescence by peripheral intravenous indocyanine green injection. When the distance between the landmarks determined by the "ung surface intersegmental constant proportion landmarks" and the segmental boundaries displayed by indocyanine green  fluorescence staining was ≤1 cm, the landmarks were judged to be consistent with the planes with discrepant fluorescence. As long as one of the landmarks was judged to be consistent, the method was considered to be feasible and accurate. Results 聽 聽 A total of 21 patients who underwent thoracoscopic segmentectomy were enrolled, with 5 male and 16 female patients. The median age was 55 years, ranging from 34 to 76 years. A total of 11 patients received left-side surgery, while 10 patients received right-side surgery. In the operations of 21 pulmonary segmentectomies, at least one intersegmental landmark determined by the "lung surface intersegmental constant proportion landmarks" was consistent with the intersegmental plane determined by indocyanine green fluorescence staining in each patient. Conclusion 聽 聽The intersegmental landmarks determined by the "lung surface intersegmental constant proportion landmarks" are consistent with that determined by indocyanine green fluorescence staining. The method of "lung surface intersegmental constant proportion landmarks" is feasible and accurate in identifying intersegmental planes during pulmonary segmentectomy.