Level of serum FABP1 and its relationship with Helicobacter pylori infection in patients with gastric cancer / 国际肿瘤学杂志

Objective:To investigate the serum level of fatty acid binding protein 1 (FABP1) and its relationship with Helicobacter pylori (Hp) infection in patients with gastric cancer. Methods:Forty gastric cancer patients (gastric cancer group) who were hospitalized in Affiliated Hospital of Qinghai University from August 2021 to August 2022 were selected as the research subjects, and 40 physical examination subjects during the same period were selected as the normal control group and 40 chronic atrophic gastritis patients were selected as the CAG group. The Hp infection were detected by 13C breath test, and the levels of serum FABP1 were detected by enzyme-linked immunosorbent assay. The Hp infection status, serum FABP1 levels, and the relationship between the two in the three groups of study subjects were analyzed. And the relationships between the level of serum FABP1 and the clinicopathological features of gastric cancer patients were analyzed. The diagnostic value of serum FABP1, CA19-9, CA72-4 and combined test of 3 indexes were evaluated by receiver operating characteristic (ROC) curve. Results:The Hp infection rates in the control group, CAG group, and gastric cancer group were 32.50% (13/40), 55.00% (22/40), and 60.00% (24/40), respectively, with a statistically significant difference ( χ2=6.87, P=0.032). Among them, the Hp infection rate in the control group was compared with that in the gastric cancer group, with a statistically significant difference ( P<0.05), and there were no statistically significant differences between the CAG group and the control group, the gastric cancer group (both P>0.05). The levels of serum FABP1 in the control group, CAG group, and gastric cancer group were [63.47 (37.53, 71.59) ] ng/ml, [65.26 (51.15, 79.67) ] ng/ml, and [72.84 (53.44, 82.25) ] ng/ml, respectively, with a statistically significant difference ( H=6.62, P=0.037). Among them, there was a statistically significant difference between the control group and the gastric cancer group ( H=19.93, P=0.031), while there were no statistically significant differences between the CAG group and the control group, the gastric cancer group ( H=1.50, P=0.133; H=1.09, P=0.277). Among all study subjects, the levels of serum FABP1 in the Hp positive group ( n=59) and Hp negative group ( n=61) were [77.05 (68.90, 83.54) ] ng/ml and [47.80 (37.76, 63.32) ] ng/ml, respectively, with a statistically significant difference ( Z=7.45, P<0.001). In the control group, the levels of FABP1 in the serum of Hp positive and Hp negative persons were [77.34 (68.84, 86.31) ] ng/ml and [39.79 (36.83, 63.75) ] ng/ml, respectively, with a statistically significant difference ( Z=4.46, P<0.001). In the CAG group, the levels of FABP1 in the serum of Hp positive and Hp negative patients were [76.51 (65.30, 80.97) ] ng/ml and [49.34 (39.92, 59.41) ] ng/ml, respectively, with a statistically significant difference ( Z=4.32, P<0.001). In the gastric cancer group, the levels of FABP1 in the serum of Hp positive and Hp negative patients were [77.15 (72.62, 84.13) ] ng/ml and [50.57 (44.54, 68.97) ] ng/ml, respectively, with a statistically significant difference ( Z=4.32, P<0.001). There were significant correlations between the serum level of FABP1 and smoking ( t=2.54, P=0.015), tumor diameter ( t=2.23, P=0.035), and lymph node metastasis ( t=3.22, P=0.003) in gastric cancer patients. And there were no significant correlations between FABP1 and gender ( t=0.98, P=0.333), age ( t=1.60, P=0.117), alcohol consumption ( Z=0.10, P=0.925), tumor site ( F=1.06, P=0.356), degree of differentiation ( t=0.61, P=0.545), the depth of infiltration ( t=1.41, P=0.166), distant metastasis ( Z=1.96, P=0.050) and TNM staging ( Z=0.66, P=0.508). ROC curve analysis showed that the area under the curve (AUC) of serum FABP1 for gastric cancer diagnosis was 0.62, 95% CI: 0.51-0.72, the sensitivity and specificity were 57.50% and 68.70%, respectively; the AUC of CA19-9 for gastric cancer diagnosis was 0.89, 95% CI: 0.83-0.95, the sensitivity and specificity were 77.50%, 86.30%, respectively; the AUC of CA72-4 for gastric cancer diagnosis was 0.88, 95% CI: 0.81-0.94, the sensitivity and specificity were 70.00%, 93.70%, respectively; the AUC of combined test of 3 indexes for gastric cancer diagnosis was 0.91, 95% CI: 0.82-0.97, the sensitivity and specificity were 67.50% and 95.00%, respectively. Conclusion:The Hp infection rate of gastric cancer patients is higher than that of the health examiners, the serum FABP1 level of gastric cancer patients is higher than that of the healthy health examiners, the serum FABP1 level of Hp positive persons is higher than that of Hp negative persons, and Hp infection and FABP1 level may have a common carcinogenic mechanism in the occurrence and development of gastric cancer.

Burned-out testicular germ cell tumors: a clinicopathological analysis of three cases / 中华病理学杂志

Objective: To investigate the clinicopathological features and possible mechanisms of burned-out testicular germ cell tumors. Methods: The clinical and imaging data, histology and immunophenotypic characteristics of three cases of burned-out testicular germ cell tumors diagnosed at the Ruijin Hospital, Medical College of the Shanghai Jiaotong University, from 2016 to 2020 were retrospectively analyzed. The relevant literature was reviewed. Results: The mean age of the three patients was 32 years. Case 1 had an elevated preoperative alpha-fetoprotein level (810.18 μg/L) and underwent "radical pancreaticoduodenectomy and retroperitoneal lesion resection" for a retroperitoneal mass. Postoperative pathology showed embryonal carcinoma, which needed to exclude gonadal metastasis. Color Doppler ultrasound showed a solid mass of the right testis, with hypoechoic lesion and scattered calcification in some areas. Case 2 was a "right supraclavicular lymph node biopsy specimen." Chest X-ray showed multiple metastases in both lungs. The biopsy showed metastatic embryonic carcinoma and bilateral testicular color Doppler ultrasound revealed abnormal calcifications in the right testicle. Case 3 showed a cystic mass of the right testis with calcification and solid areas. All 3 patients underwent radical right orchiectomy. Grossly, borders of the testicular scar areas were well defined. Cross sectioning of the tumors showed a gray-brown cut surface and single focus or multiple foci of the tumor. The tumor maximum diameter was 0.6-1.5 cm. Microscopically, lymphocytes, plasma cells infiltration, tubular hyalinization, clustered vascular hyperplasia and hemosiderin laden macrophages were found in the scar. Atrophic and sclerotic seminiferous tubules, proliferation of clustered Leydig cells and small or coarse granular calcifications in seminiferous tubules were present around the scar. Seminoma and germ cell neoplasia in situ were seen in case 1, germ cell neoplasia in situ was seen in case 2 and germ cells with atypical hyperplasia were seen in case 3. Immunohistochemistry showed that embryonic carcinoma expressed SALL4, CKpan(AE1/AE3) and CD30, seminoma and germ cell tumor in situ expressed OCT3/4, SALL4 and CD117, and spermatogenic cells with atypical hyperplasia expressed CD99 and SALL4. The Ki-67 positive index was about 20%, while OCT3/4 and CD117 were both negative. Conclusions: Burned-out testicular germ cell tumors are rare. The possibility of gonad testicular metastasis should be considered first for extragonadal germ cell tumor. If fibrous scar is found in testis, it must be determined whether it is a burned-out testicular germ cell tumor. The burned-out mechanisms may be related to the microenvironment of tumor immune-mediated and local ischemic injury.

Doublecortin-like kinase 1 activates Hippo pathway to promote migration, invasion and proliferation of pancreatic cancer cells / 中华肿瘤杂志

Objective: To explore the mechanism of Doublecortin-like kinase 1 (DCLK1) in promoting cell migration, invasion and proliferation in pancreatic cancer. Methods: The correlation between DCLK1 and Hippo pathway was analyzed using TCGA and GTEx databases and confirmed by fluorescence staining of pancreatic cancer tissue microarrays. At the cellular level, immunofluorescence staining of cell crawls and western blot assays were performed to clarify whether DCLK1 regulates yes associated protein1 (YAP1), a downstream effector of the Hippo pathway. Reverse transcription-quantitative real-time polymerase chain reaction (RT-qPCR) was used to analyze the expressions of YAP1 binding transcription factor TEA-DNA binding proteins (TEAD) and downstream malignant behavior-promoting molecules CYR61, EDN1, AREG, and CTGF. Transwell test of the DCLK1-overexpressing cells treated with the Hippo pathway inhibitor Verteporfin was used to examine whether the malignant behavior-promoting ability was blocked. Analysis of changes in the proliferation index of experimental cells used real-time label-free cells. Results: TCGA combined with GTEx data analysis showed that the expressions of DCLK1 and YAP1 molecules in pancreatic cancer tissues were significantly higher than those in adjacent tissues (P<0.05). Moreover, DCLK1was positively correlated with the expressions of many effectors in the Hippo pathway, including LATS1 (r=0.53, P<0.001), LATS2 (r=0.34, P<0.001), MOB1B (r=0.40, P<0.001). In addition, the tissue microarray of pancreatic cancer patients was stained with multicolor fluorescence, indicated that the high expression of DCLK1 in pancreatic cancer patients was accompanied by the up-regulated expression of YAP1. The expression of DCLK1 in pancreatic cancer cell lines was analyzed by the CCLE database. The results showed that the expression of DCLK1 in AsPC-1 and PANC-1 cells was low. Thus, we overexpressed DCLK1 in AsPC-1 and PANC-1 cell lines and found that DCLK1 overexpression in pancreatic cancer cell lines promoted YAP1 expression and accessible to the nucleus. In addition, DCLK1 up-regulated the expression of YAP1 binding transcription factor TEAD and increased the mRNA expression levels of downstream malignant behavior-promoting molecules. Finally, Verteporfin, an inhibitor of the Hippo pathway, could antagonize the cell's malignant behavior-promoting ability mediated by high expression of DCLK1. We found that the number of migrated cells with DCLK1 overexpressing AsPC-1 group was 68.33±7.09, which was significantly higher than 22.00±4.58 of DCLK1 overexpressing cells treated with Verteporfin (P<0.05). Similarly, the migration number of PANC-1 cells overexpressing DCLK1 was 65.66±8.73, which was significantly higher than 37.00±6.00 of the control group and 32.33±9.61 of Hippo pathway inhibitor-treated group (P<0.05). Meanwhile, the number of invasive cells in the DCLK1-overexpressed group was significantly higher than that in the DCLK1 wild-type group cells, while the Verteporfin-treated DCLK1-overexpressed cells showed a significant decrease. In addition, we monitored the cell proliferation index using the real-time cellular analysis (RTCA) assay, and the proliferation index of DCLK1-overexpressed AsPC-1 cells was 0.66±0.04, which was significantly higher than 0.38±0.01 of DCLK1 wild-type AsPC-1 cells (P<0.05) as well as 0.05±0.03 of DCLK1-overexpressed AsPC1 cells treated with Verteporfin (P<0.05). PANC-1 cells showed the same pattern, with a proliferation index of 0.77±0.04 for DCLK1-overexpressed PANC-1 cells, significantly higher than DCLK1-overexpressed PANC1 cells after Verteporfin treatment (0.14±0.05, P<0.05). Conclusion: The expression of DCLK1 is remarkably associated with the Hippo pathway, it promotes the migration, invasion, and proliferation of pancreatic cancer cells by activating the Hippo pathway.

Geographic Variations in the Prevalence, Awareness, Treatment, and Control of Dyslipidemia among Chinese Adults in 2018-2019: A Cross-sectional Study / 生物医学与环境科学（英文）

OBJECTIVE@#To investigate the spatial patterns of the prevalence, awareness, treatment, and control rates of dyslipidemia at the provincial level in China.@*METHODS@#A national and provincial representative cross-sectional survey was conducted among 178,558 Chinese adults in 31 provinces in mainland China in 2018-2019, using a multi-stage, stratified, cluster-randomized sampling design. Subjects, as households, were selected, followed by a home visit to collect information. Both descriptive and linear regression procedures were applied in the analyses.@*RESULTS@#The overall prevalence of dyslipidemia was 35.6%, and wide geographic variations of prevalence, treatment, and control rates of dyslipidemia were identified among 178,558 eligible participants with a mean age of 55.1 ± 13.8 years. The highest-lowest difference regarding the provincial level prevalence rates were 19.7% vs. 2.1% for high low-density lipoprotein cholesterol, 16.7% vs. 2.5% for high total cholesterol, 35.9% vs. 5.4% for high triglycerides, and 31.4% vs. 10.5% for low high-density lipoprotein cholesterol. The treatment rate of dyslipidemia was correlated with the socio-demographic index ( P < 0.001), urbanization rate ( P = 0.01), and affordable basic technologies and essential medicines ( P < 0.001).@*CONCLUSION@#Prevailing dyslipidemia among the Chinese population and its wide geographic variations in prevalence, treatment, and control suggest that China needs both integrated and localized public health strategies across provinces to improve lipid management.

Analysis of clinical phenotype and genotype of Chinese children with disorders of sex development / 中华儿科杂志

Objective: To explore the heterogeneity and correlation of clinical phenotypes and genotypes in children with disorders of sex development (DSD). Methods: A retrospective study of 1 235 patients with clinically proposed DSD in 36 pediatric medical institutions across the country from January 2017 to May 2021. After capturing 277 DSD-related candidate genes, second-generation sequencing was performed to analyzed the heterogeneity and correlation combined with clinical phenotypes. Results: Among 1 235 children with clinically proposed DSD, 980 were males and 255 were females of social gender at the time of initial diagnosis with the age ranged from 1 day of age to 17.92 years. A total of 443 children with pathogenic variants were detected through molecular genetic studies, with a positive detection rate of 35.9%. The most common clinical phenotypes were micropenis (455 cases), hypospadias (321 cases), and cryptorchidism (172 cases) and common mutations detected were in SRD5A2 gene (80 cases), AR gene (53 cases) and CYP21A2 gene (44 cases). Among them, the SRD5A2 mutation is the most common in children with simple micropenis and simple hypospadias, while the AMH mutation is the most common in children with simple cryptorchidism. Conclusions: The SRD5A2 mutation is the most common genetic variant in Chinese children with DSD, and micropenis, cryptorchidism, and hypospadias are the most common clinical phenotypes. Molecular diagnosis can provide clues about the biological basis of DSD, and can also guide clinicians to perform specific clinical examinations. Target sequence capture probes and next-generation sequencing technology can provide effective and economical genetic diagnosis for children with DSD.

Immunomodulatory Mechanism of Kangxian Yixin Prescriptions on Autoimmune Injury Mice Based on Th17/Treg Cell Balance / 中国实验方剂学杂志

ObjectiveTo investigate the immunomodulatory mechanism of Kangxian Yixin prescription （KYP） on autoimmune injury mice and its relationship with the T helper 17 （Th17）/regulatory T cell （Treg） balance. MethodSixty healthy 8-week-old male BALBc mice were randomly divided into a normal group and an experimental group at a ratio of 1∶5. On the 0th， 7th， and 28th days， 0.2 mL of porcine cardiac myosin emulsion （containing 0.1 mg of porcine cardiac myosin） was subcutaneously injected into the groin， armpit， and back of the mice in the experimental group to induce an animal model of myocardial immune injury. Mice with myocardial immune injury were randomly divided into a model group （Model）， a KYP group （20.4 g·kg-1·d-1， ig）， and a valsartan group （12 mg·kg-1·d-1， ig）. Mice in the control group and the model group received the same amount of normal saline by gavage. After four weeks of intervention， the heart tissues were collected. Hematoxylin-eosin （HE） staining and Masson staining were used to detect pathological damage in heart tissues. Enzyme-linked immunosorbent assay （ELISA） was used to detect the expression of type B-type natriuretic peptide （BNP）， anti-cardiac antibody， interleukin-17 （IL-17）， and interleukin-10 （IL-10） in the serum of mice， and the expression levels of Th17 cells and Tregs in the spleen were detected by flow cytometry. The protein expression of B-cell lymphoma-2 （Bcl-2） and Bcl-2-associated X （Bax） in heart tissues was detected by Western blot， and the mRNA expression of retinoid-related orphan receptor gamma t （RORγt） and forkhead box P3 （FoxP3） in the spleen was detected by quantitative real-time polymerase chain reaction （Real-time PCR）. ResultCompared with the control group， the model group showed worsened pathological damage in heart tissues， elevated serum levels of BNP， anti-myocardial antibody， and IL-17， decreased serum expression of IL-10 （P<0.05）， increased expression of Th17 cells and reduced expression of Tregs in spleen tissues （P<0.05）， increased protein expression of Bax， diminished Bcl-2 protein expression， elevated Bax/Bcl-2 ratio， up-regulated mRNA expression of RORγt， dwindled mRNA expression of FoxP3， and elevated ratio of RORγt/FoxP3 （P<0.05）. Compared with the model group， the KYP group and the valsartan group displayed relieved pathological damage in heart tissues， decreased serum expression of BNP， anti-myocardial antibody， and IL-17， increased serum expression of IL-10 （P<0.05）， reduced expression of Th17 cells and increased Tregs in spleen tissues （P<0.05）， dwindled protein expression of Bax and elevated protein expression of Bcl-2 in heart tissues （P<0.05）， diminished Bax/Bcl-2 ratio， reduced mRNA expression of RORγt， up-regulated FoxP3， and down-regulated ratio of RORγt/FoxP3 （P<0.05）. ConclusionKYP may improve myocardial immune damage by regulating the Th17/Treg cell balance.

Evaluation of Qi-deficiency Model Based on Urine Non-targeted Metabonomics / 中国实验方剂学杂志

ObjectiveTo evaluate the success of Qi-deficiency model of Balb/C-nu mice established by swimming exhaustion test from the view of biomarkers and metabolic pathways by metabonomics. MethodBalb/C-nu mice were randomly divided into the normal group and Qi-deficiency group， Qi-deficiency model was established by swimming with 5% body weight metal fixed at the tail for 15 consecutive days until exhaustion （nose tip immersion time>5 s）. The urine metabonomics was analyzed by ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry （UPLC-Q-TOF/MS）， and the mobile phase was acetonitrile （A）-0.1% formic acid aqueous solution （B） for gradient elution （0-1 min， 5%-8%A； 1-4 min， 8%-8.5%A； 4-5 min， 8.5%-12%A； 5-10 min， 12%-40%A； 10-12 min， 40%-100%A； 12-15 min， 100%A）， the flow rate was 0.3 mL·min-1， the injection volume was 10 μL， electrospray ionization （ESI） in positive and negative ion modes was used in MS analysis， the MS data were acquired in full-scan mode from m/z 50-1 000. Principal component analysis （PCA）， orthogonal partial least squares-discriminant analysis （OPLS-DA）， human metabolome database （HMDB）， high collision energy ion fragments collected by MSE and tandem MS （MS/MS） ion information were used to identify potential biomarkers. Kyoto Encyclopedia of Genes and Genomes （KEGG） database and MetaboAnalyst 5.0 were used to analyze the corresponding metabolic pathways and pathway enrichment of biomarkers. ResultEndogenous substances in urine of mice in normal group and Qi-deficiency group were obviously separated， and there were 24 biomarkers with significant difference. The metabolic pathways involved in these biomarkers were tricarboxylic acid cycle， glycolysis metabolism， amino acid metabolism， fatty acid metabolism， pyrimidine metabolism， steroid hormone biosynthesis and tryptophan metabolism. Among them， the metabolic pathways related to energy were tricarboxylic acid cycle， glycolysis metabolism， amino acid metabolism， fatty acid metabolism， pyrimidine metabolism and steroid hormone biosynthesis. ConclusionThrough the investigation of urine metabonomics， combined with the physical signs， the Qi-deficiency model established by swimming exhaustion test in Balb/C-nu mice is successfully evaluated， and it is also verified that there is a close correlation between Qi-deficiency and energy metabolism.

Evaluation of Qi-deficiency Model Based on Urine Non-targeted Metabonomics / 中国实验方剂学杂志

ObjectiveTo evaluate the success of Qi-deficiency model of Balb/C-nu mice established by swimming exhaustion test from the view of biomarkers and metabolic pathways by metabonomics. MethodBalb/C-nu mice were randomly divided into the normal group and Qi-deficiency group， Qi-deficiency model was established by swimming with 5% body weight metal fixed at the tail for 15 consecutive days until exhaustion （nose tip immersion time>5 s）. The urine metabonomics was analyzed by ultra-high performance liquid chromatography-quadrupole-time-of-flight mass spectrometry （UPLC-Q-TOF/MS）， and the mobile phase was acetonitrile （A）-0.1% formic acid aqueous solution （B） for gradient elution （0-1 min， 5%-8%A； 1-4 min， 8%-8.5%A； 4-5 min， 8.5%-12%A； 5-10 min， 12%-40%A； 10-12 min， 40%-100%A； 12-15 min， 100%A）， the flow rate was 0.3 mL·min-1， the injection volume was 10 μL， electrospray ionization （ESI） in positive and negative ion modes was used in MS analysis， the MS data were acquired in full-scan mode from m/z 50-1 000. Principal component analysis （PCA）， orthogonal partial least squares-discriminant analysis （OPLS-DA）， human metabolome database （HMDB）， high collision energy ion fragments collected by MSE and tandem MS （MS/MS） ion information were used to identify potential biomarkers. Kyoto Encyclopedia of Genes and Genomes （KEGG） database and MetaboAnalyst 5.0 were used to analyze the corresponding metabolic pathways and pathway enrichment of biomarkers. ResultEndogenous substances in urine of mice in normal group and Qi-deficiency group were obviously separated， and there were 24 biomarkers with significant difference. The metabolic pathways involved in these biomarkers were tricarboxylic acid cycle， glycolysis metabolism， amino acid metabolism， fatty acid metabolism， pyrimidine metabolism， steroid hormone biosynthesis and tryptophan metabolism. Among them， the metabolic pathways related to energy were tricarboxylic acid cycle， glycolysis metabolism， amino acid metabolism， fatty acid metabolism， pyrimidine metabolism and steroid hormone biosynthesis. ConclusionThrough the investigation of urine metabonomics， combined with the physical signs， the Qi-deficiency model established by swimming exhaustion test in Balb/C-nu mice is successfully evaluated， and it is also verified that there is a close correlation between Qi-deficiency and energy metabolism.

Clinicopathological features and survival analysis of gastric cancer patients with neuroendocrine differentiation after radical resection / 中华胃肠外科杂志

Objective: To compare the clinicopathological characteristics and the prognosis of gastric adenocarcinoma patients with and without neuroendocrine differentiation (NED) after radical gastrectomy plus D2 lymph node dissection. Methods: A retrospective cohort study was performed. The inclusion criteria were as follows: (1) patients who underwent radical resection of gastric cancer plus D2 lymph node dissection and were confirmed as gastric adenocarcinoma by postoperative pathology and received immunohistochemical examination of neuroendocrine markers Syn and/or CgA; (2) patients aged 20 to 75 years with normal organ function; (3) patients who did not receive neoadjuvant chemotherapy or radiotherapy before operation; (4) patients with postoperative pathological stage I to III according to the 8th edition of tumor staging system of American Joint Committee on Cancer (AJCC); and (5) patients who completed adjuvant chemotherapy according to the postoperative pathological stage. Those who had other malignant tumors in the past 5 years and who could not be followed up according to the required rules were excluded. According to the above criteria, the clinicopathological characteristics of gastric cancer patients who underwent radical resection plus D2 lymph node dissection in Zhongshan Hospital of Fudan University from January 2010 to June 2017 were collected and compared. All patients were followed up till June 2020. The disease-free survival (DFS) and overall survival (OS) between the patients with and without NED were compared, and the effect of NED on the prognosis was corrected by Cox proportional hazards model. The propensity score matching method was used for sensitivity analysis. Results: A total of 539 patients were enrolled in this study, including 35 with NED and 504 without NED. Compared with the patients without NED, the patients with NED were older [(65.0±7.5) years vs. (54.5±11.3) years, t=-7.681, P<0.001], had higher proportion of undergoing proximal gastrectomy [22.9% (8/35) vs. 7.6% (36/504), χ(2)=10.335, P=0.006], higher proportion of intestinal-type based on Lauren classification [77.1% (27/35) vs. 42.5% (214/504), χ(2)=14.553, P<0.001], and higher proportion of pathologic stage III [65.7% (23/35) vs. 27.6% (139/504), χ(2)=25.653, P<0.001]. The 3-year DFS of patients with NED and those without NED was 48.9% (95% CI: 33.8%-70.8%) and 37.4% (95% CI: 32.9%-42.5%) respectively, and no significant difference was found (P=0.44). The 3-year OS was 56.1% (95% CI: 39.9%-79.1%) and 64.3% (95% CI: 59.3%-69.7%) respectively, and no significant difference was found as well (P=0.32). Univariate and multivariate analyses showed that NED was not an independent risk factor for DFS and OS (all P>0.05). Sensitivity analysis showed that there was no significant difference in DFS and OS between the two groups after propensity score matching. Conclusion: Compared with patients without NED, patients with NED were older at onset, had a higher proportion of proximal gastrectomy, intestinal-type, and later diagnostic stage, but the survival prognosis had no significant difference with that of patients without NED.

Potential targets of Euodiae Fructus in treatment of insomnia based on network pharmacology / 中国中药杂志

The acupoint application of Euodiae Fructus at Yongquan(KI1) can significantly improve the sleep quality of patients with insomnia with berberine as the main effective component for the efficacy. Nineteen active compounds and 203 drug targets were screened out from Traditional Chinese Medicine Systems Pharmacology Database and Analysis Platform(TCMSP). After comparison with GeneCards and Online Mendelian Inheritance in Man(OMIM), 24 common genes of diseases and drugs were obtained. STRING 11.0 was used to construct a protein-protein interaction(PPI) network of the overlapping genes, and Matthews correlation coefficient(MCC) was employed to screen the core genes, which were then subjected to enrichment analysis with gene ontology(GO) and Kyoto encyclopedia of genes and genomes(KEGG). The results revealed that the main compounds of Euodiae Fructus, such as berberine and rutaecarpine, participated in the biological processes(such as neurotransmitter receptor activity) by regulating C-reactive protein(CRP), estrogen receptor 1(ESR1), 5-hydroxytryptamine(5-HT) receptor, and interleukin-6(IL-6) to exert sedative, anxiolytic, and antidepressant effects. Sixty 4-week-old SPF mice were randomly divided into a control group, a model group, a positive drug(diazepam tablets) group, and low-, medium-, and high-dose berberine groups. Medication with corresponding drugs was performed for one week. The results demonstrated that berberine was potent in reducing the activities and standing times of mice, down-regulating the levels of CRP and IL-6 mRNA in the hypothalamus, and up-regulating the expression of 5-HT(P<0.01); however, no significant effect on ESR1 was observed. The network of Euodiae Fructus in treating insomnia was constructed by network pharmacology and verified by tests. The findings indicated that the therapeutic efficacy of Euodiae Fructus in treating insomnia was achieved by participating in multiple biological processes, such as neurotransmitter receptor activity, which provided a scientific basis for its clinical application.

A 14-year multi-institutional collaborative study of Chinese pelvic floor surgical procedures related to pelvic organ prolapse / 中华医学杂志(英文版)

BACKGROUND@#It has been a global trend that increasing complications related to pelvic floor surgeries have been reported over time. The current study aimed to outline the development of Chinese pelvic floor surgeries related to pelvic organ prolapse (POP) over the past 14 years and investigate the potential influence of enhanced monitoring conducted by the Chinese Association of Urogynecology since 2011.@*METHODS@#A total of 44,594 women with POP who underwent pelvic floor surgeries between October 1, 2004 and September 30, 2018 were included from 22 tertiary academic medical centers. The data were reported voluntarily and obtained from a database. We compared the proportion of each procedure in the 7 years before and 7 years after September 30, 2011. The data were analyzed by performing Z test (one-sided).@*RESULTS@#The number of different procedures during October 1, 2011-September 30, 2018 was more than twice that during October 1, 2004-September 30, 2011. Regarding pelvic floor surgeries related to POP, the rate of synthetic mesh procedures increased from 38.1% (5298/13,906) during October 1, 2004-September 30, 2011 to 46.0% (14,107/30,688) during October 1, 2011-September 30, 2018, whereas the rate of non-mesh procedures decreased from 61.9% (8608/13,906) to 54.0% (16,581/30,688) (Z = 15.53, P < 0.001). Regarding synthetic mesh surgeries related to POP, the rates of transvaginal placement of surgical mesh (TVM) procedures decreased from 94.1% (4983/5298) to 82.2% (11,603/14,107) (Z = 20.79, P < 0.001), but the rate of laparoscopic sacrocolpopexy (LSC) procedures increased from 5.9% (315/5298) to 17.8% (2504/14,107).@*CONCLUSIONS@#The rate of synthetic mesh procedures increased while that of non-mesh procedures decreased significantly. The rate of TVM procedures decreased while the rate of LSC procedures increased significantly.@*TRIAL REGISTRATION NUMBER@#NCT03620565, https://register.clinicaltrials.gov.

Adherence to Cancer Prevention Guidelines and Endometrial Cancer Risk: Evidence from a Systematic Review and Dose-Response Meta-analysis of Prospective Studies / Journal of the Korean Cancer Association, 대한암학회지

Purpose@#The evidence of adherence to cancer prevention guidelines and endometrial cancer (EC) risk has been limited and controversial. This study summarizes and quantifies the relationship between adherence to cancer prevention guidelines and EC risk. @*Materials and Methods@#The online databases PubMed, Web of Science, and EMBASE were searched for relevant publications up to June 2, 2020. This study had been registered at PROSPERO. The registration number is CRD42020149966. Study quality evaluation was performed based on the Newcastle-Ottawa Scale. The I2 statistic was used to estimate heterogeneity among studies. Egger’s and Begg’s tests assessed potential publication bias. Summary hazard ratios (HRs) and 95% confidence intervals (CIs) for the relationship between adherence to cancer prevention guidelines score was assigned to participants by summarizing individual scores for each lifestyle-related factor. The scores ranged from least healthy (0) to most healthy (20) and the EC risk was calculated using a randomeffects model. @*Results@#Five prospective studies (four cohort studies and one case‑cohort study) consisted of 4,470 EC cases, where 597,047 participants were included. Four studies had a low bias risk and one study had a high bias risk. Summary EC HR for the highest vs. lowest score of adherence to cancer prevention guidelines was 0.54 (95% CI, 0.40 to 0.73) and had a high heterogeneity (I2=86.1%). For the dose-response analysis, an increment of 1 significantly reduced the risk of EC by 6%. No significant publication bias was detected. @*Conclusion@#This study suggested that adherence to cancer prevention guidelines was negatively related to EC risk.

Application of biocopy function of temporary crown occlusal morphology in patients with severe attrition / 北京大学学报(医学版)

OBJECTIVE@#To explore the preliminary application of "biocopy function" in digital technology of temporary crown in severe tooth attrition, so as to reduce the difficulty of final restoration adjustment in severe tooth wear cases, and save clinical time.@*METHODS@#Twelve patients aged between 40 and 65 years with severe tooth attrition were recruited in this study. The experimental group (6 cases, 3 females and 3 males) used the method of digital copy of temporary restoration shape when making the final restoration, and the control group (6 cases, 3 females and 3 males) used the traditional method to make the final restoration. The mean time of central occlusal adjustment and protrusive and lateral occlusal adjustment of each crown, the number of follow-up visits of the patients were recorded and statistically analyzed. The occlusal comfort of the first and the third months after wearing the prosthesis was evaluated by the patients, and the difference of the occlusal comfort of the final prosthesis made by the two methods was compared (the full score was 10 points). The occlusal adjustment time and occlusal comfort score were used as measurement data. Single sample t test was used. The number of follow-up visits was count data. Rank sum test was used for non-normal continuous variables.@*RESULTS@#The mean occlusal time of each crown adjustment in the experimental group was significantly lower than that in the control group (P < 0.01), and the median number of follow-up visits in the experimental group was lower than that in the control group (P < 0.01). The average occlusal comfort score of the experimental group was higher than that of the control group at the first time (P < 0.01). After three months of crown wearing, the median occlusal comfort score of the experimental group was higher than that of the control group (P < 0.05).@*CONCLUSION@#In the case of severe tooth attrition, it is feasible to use the "biocopy function" in the design software to design the final prosthesis, which is conducive to reduce the difficulty of adjustment and achieve predictable functional and aesthetic effects, which is of great significance to save clinical time and improve the accuracy of restoration.

Clinical medical education in Ethiopia and its enlightenment / 中华医学教育探索杂志

In the field of medical education, Ethiopia has made a great progress in recent years. After systematical inquiry of Ethiopia's clinical medical education, this paper elaborates the mode of undergraduate teaching in Ethiopia from aspects of curriculum design, emphasis of contents, teaching methods and assessment methods, and also introduces the development and continuing education of Ethiopian medical students after graduation. Moreover, the "Innovative Track" clinical medical education reform proposed by Ethiopia recently is introduced as well. Therefore, characteristics and advantages of clinical teaching in Ethiopia indicate that in the process of deepening the medical education reform in China, we should learn from different countries. In this way, the development of medical education in China can be promoted better and faster.

Quality standard of Bufei Granules / 中草药

Objective: To establish a scientific and reasonable quality control method of Bufei Granules through the qualitative and quantitative research of thin layer identification and content determination of Bufei Granules. Methods: Based on the main chemical constituents of each drug in Bufei Granules, TLC method was used to analyze Corni Fructus, Ephedrae Herba, Paeoniae Radix Rubra, Scutellariae Radix, Citri Reticulatae Pericarpium, and Glycyrrhizae Radix et Rhizoma; HPLC was used to determine the content of loganin and baicalin. The content of loganin was analyzed by Agilent Eclipse XDB-C18 column (250 mm × 4.6 mm, 5 μm) with the mobile phase of acetonitrile-methanol-water-formic acid (10:1:89:0.1). The detection wavelength was set at 236 nm; The content of baicalin was analyzed by Dikma Diamonsil C18 column (250 mm × 4.6 mm, 5 μm) with the mobile phase of methanol-water-formic acid (49:51:0.1). The detection wavelength was set at 280 nm. Results: The TLC identification method can distinguish Ephedrae Herba, Paeoniae Radix Rubra, Scutellariae Radix, Citri Reticulatae Pericarpium, and Glycyrrhizae Radix et Rhizoma with clear spots, no negative interference, good separation and strong specificity. Loganin and baicalin were used as index components in methodological study. The average recovery of loganin was 98.49% and the RSD was 0.80%; The repeatability test RSD was 0.83% which met the requirement. The linear range was from 4.76 μg/mL to 50.70 μg/mL and the linear relationship was good (r = 0.999 9). The average recovery of baicalinrate was 101.20% and the RSD was 0.77%. The repeatability test RSD was 0.90%, which met the requirements. The linear range was from 6.00 μg/mL to 96.00 μg/mL and the linear relationship was good (r = 0.999 9). The loganin content of three bantches of samples was 12.04, 9.78 and 11.81 mg/bag; And the content determination result of baicalin was 121.13, 101.31 and 103.14 mg/bag. Conclusion: The method is easy to operate, strong in specificity, accurate and sensitive, with good repeatability. It can be applied for the quality control of Bufei Granules.

Trace determination and characterization of ginsenosides in rat plasma through magnetic dispersive solid-phase extraction based on core-shell polydopamine-coated magnetic nanoparticles / 药物分析学报

Enrichment of trace bioactive constituents and metabolites from complex biological samples is chal-lenging. This study presented a one-pot synthesis of magnetic polydopamine nanoparticles (Fe3O4@-SiO2@PDA NPs) with multiple recognition sites for the magnetic dispersive solid-phase extraction (MDSPE) of ginsenosides from rat plasma treated with white ginseng. The extracted ginsenosides were characterized by combining an ultra-high-performance liquid chromatography coupled to a high-resolution mass spectrometry with supplemental UNIFI libraries. Response surface methodology was statistically used to optimize the extraction procedure of the ginsenosides. The reusability of Fe3O4@-SiO2@PDA NPs was also examined and the results showed that the recovery rate exceeded 80％ after recycling 6 times. Furthermore, the proposed method showed greater enrichment efficiency and could rapidly determine and characterize 23 ginsenoside prototypes and metabolites from plasma. In com-parison, conventional methanol method can only detect 8 ginsenosides from the same plasma samples. The proposed approach can provide methodological reference for the trace determination and charac-terization of different bioactive ingredients and metabolites of traditional Chinese medicines and food.

Effect of Dihydrotestosterone on CostimulatoryMolecules in a Mouse Model of Graves' Disease / 中国医学科学杂志(英文版)

Objective Graves' disease is the most common autoimmune thyroid disease and its prevalence and clinical manifestations are disparate between females and males. Costimulatory molecules play an essential role in regulating autoimmune responses. The objective of this study was to determine if expression of inhibitory molecules was correlated with treatment by dihydrotestosterone (DHT) in an BALB/c mouse model of experimental autoimmune Graves' disease.Methods Female BALB/c mice were immunized three times with thyroid stimulating hormone receptor A-subunit encoded by adenovirus to establish a Graves' disease model. Three different doses of DHT or a matching placebo were administered by implantation of slow-release pellets a week before the first immunization. Four weeks after the third immunization, the mice were euthanatized, and then the spleen and thymus were removed. Total thyroxine and free thyroxine levels in serum of mice were detected using a radioimmunoassay kit. Real-time polymerase chain reaction was performed to estimate the expression of costimulatory molecules in lymphocytes from the spleen and thymus. Flow cytometry was used to analyze the percentage of CD4 T cells in splenic lymphocytes. Quantitative data were compared with unpaired -tests. Correlation between two variables was analyzed using Analysis of Variance.Results Treatment with DHT can dramatically reduce total thyroxine and free thyroxine levels. Higher expression of programmed death-1 was found in the spleen of Graves' disease mice receiving 5 mg of DHT treatment (0.635±0.296 . 0.327±0.212; =2.714, =0.014), similarly, T-cell immunoglobulin domain and mucin domain 3 (TIM-3) in both the spleen (1.004±0.338 . 0.646±0.314; =2.205, =0.022) and the thymus (0.263±0.127 . 0.120±0.076; =3.221, =0.004) also increased after 5 mg of DHT treatment compared with the parallel placebo model mice. Moreover, the percentage of CD4 T cells declined in the splenic lymphocytes of Graves' disease mice treated with 5 mg of DHT (19.90%±3.985% . 24.05%±2.587%; =2.804, =0.012). A significant negative association was observed between expression of TIM-3 in the spleen and serum levels of total thyroxine (=-0.7106, =0.014) as well as free thyroxine (=-0.6542, =0.029).Conclusion This study demonstrates that DHT can ameliorate experimental autoimmune Graves' disease, which may occur by up-regulating expression of programmed death-1 and TIM-3 and inhibiting development of CD4 T cells.

Clinical trials of treatment of post-stroke foot drop by fire-needling plus stuck-needle-stretching / 针刺研究

OBJECTIVE: To compare the therapeutic effect of fire-needling plus stuck-needle-stretching and conventional acupuncture for post-stroke foot drop, so as to provide a reference foundation for optimizing clinical treatment regimen. METHODS: A total of 60 patients with post-stroke foot drop were equally randomized into a treatment group and a control group. In the treatment group, fire-needling plus stuck-needle-stretching was applied to acupoint pairs Jiexi (ST41)-Taichong (LR3), Xiajuxu (ST39)-ST41, Fenglong (ST40)-ST39, shangjuxu (ST37)-ST40, Zusanli (ST36)-ST37, Dubi (ST35)-ST36, Xuanzhong (GB39)-Qiuxu (GB40) on the affected side, and Chengshan (BL57) and Ashi points were swiftly pricked with red-hot filiform needle without needle retaining. In the conventional acupuncture group, the same acupoints were needled with filiform needles, and the treatment for both groups was given once a day, 6 times a week, for consecutive 4 weeks. The spasm severity of posterior triceps of the lower leg was evaluated using modified Ashworth scale, the tibial anterior muscle strength was measured using Lovett' and Martin's methods, the activities of daily living were assessed using modified Barthel's index, the walking ability was evaluated using Holden walking rating scale and the lower limb motor function assessed using Fugl-Meyer assessment scale, and the severity of foot drop was assessed in reference to Garceau criteria. RESULTS: After the treatment, the score of the modified Ashworth scale was significantly reduced (P0.05). CONCLUSION: Both fire-needling plus stuck-needle-stretching and conventional acupuncture are effective in the treatment of post-stroke foot drop, but the former is relatively better.

The recent advances in nurses' resilience / 中国实用护理杂志

This paper reviews the research progress of nurses' resilience from the definition and classification, evaluation tools, influencing factors and intervention status. In addition, the paper also explores the current situation and development trend of nurses' resilience research to point out that further research on nurses' resilience in China can deepen the research on factors of nurses' resilience.We should strengthen the intervention of nurses' resilience, develop localized measuring tools of nurses' team resilience, and strengthen the direction of qualitative research and longitudinal research.

Intrapartum management of category Ⅱ fetal heart rate tracings / 中国实用妇科与产科杂志

The category Ⅱ fetal heart rate(FHR)tracings,which have various forms,are the common patterns of electronic fetal monitoring(EFM)during labor.The correct identification and assessment of categoryⅡ FHR tracings,as well as the targeted intervention according to specific clinical conditions,can reduce the occurrence of adverse pregnancy outcomes.This article introduces the intrapartum management process of categoryⅡFHR tracings according to the three-tier system for the categorization of intrapartum EFM,and expounds the causes and intervention measures of different types of categoryⅡFHR tracings,so as to guide clinical practice.