Objective To investigate the screening results and factors affecting abnormal detection rates among high-risk groups of esophageal cancer and to explore effective intervention measures. Methods We investigated and collected the information on gender, education level, age, marital status, symptoms of reflux esophagitis (heartburn, acid reflux, belching, hiccup, foreign body sensation in the pharynx, and difficulty swallowing), consumption of pickled vegetables, salt use, and esophageal cancer incidence of villagers in a natural village in Wenfeng District, Anyang City, Henan Province. Changes in reflux esophagitis symptoms in the high-incidence area of esophageal cancer before and after 16 years were observed, and the relationship of such changes with esophageal cancer was analyzed. Results In 2008, 711 cases were epidemiologically investigated, including 213 cases with one of the symptoms of reflux esophagitis such as heartburn, acid reflux, belching, hiccups, foreign body sensation in the pharynx, and difficulty swallowing (sorted in accordance with the abovementioned symptoms; if there are multiple symptoms, then the former is taken); 55 cases with at least two related symptoms, among which the most symptom was heartburn in 108 cases (15.1%); followed by acid reflux, belching, etc. In 2024, the same group of people was investigated, and eight people were missing because of relocation. A total of 703 people were successfully investigated, of which 189 cases (26.8%) had one of the symptoms of reflux esophagitis, such as heartburn (sorted in accordance with relevant symptoms, if there are multiple symptoms, then the former will be selected); 167 cases (23.7%) had at least two related symptoms, among which the most symptom was heartburn in 139 cases (19.7%); followed by acid reflux. Over 16 years, among the 703 people investigated, 45 cases had esophageal cancer and they had one or more of the abovementioned symptoms. No significant differences in the reflux esophagitis-like symptoms were found between 2008 and 2024 (P=0.26); no significant differences in the composition of reflux esophagitis-like symptoms were found between 2008 and 2024 (P=0.299). Conclusion The detection rate of reflux esophagitis-related symptoms in the population in a high-risk area of esophageal cancer has not decreased in the past 16 years, and the high-risk factors still exist. Esophageal cancer is closely related to reflux esophagitis, and clinical practice can provide early diagnosis and treatment for high-risk population.

Objective To investigate the relationship between tooth loss and the occurrence of esophageal cancer in a natural village in Wenfeng District, Anyang City, Henan Province. Methods A prospective cohort study was conducted to observe the occurrence of tooth loss and esophageal cancer among the asymptomatic residents of the natural village for 16 years from January 2008 to July 2024. Data were analyzed by chi-square test, binary logistic regression, and restricted cubic spline. Results Among the total population of 711 cases, 136 cases were lost to follow-up and 575 cases were included in the final statistics, including 45 cases with esophageal cancer. Significant statistical difference was found between esophageal cancer patients with and without tooth loss (P<0.05). Logistic regression analysis showed that tooth loss was associated with the occurrence of esophageal cancer (OR=3.977, 95%CI: 1.543-10.255). After the adjustment for confounders, tooth loss remained significantly associated with the occurrence of esophageal cancer (OR=3.038, 95%CI: 1.035-8.914). A nonlinear dose-response relationship was observed between the number of teeth lost and the incidence of esophageal cancer. When the number of teeth lost was less than 12, the risk of esophageal cancer increased with the number of teeth lost. When more than 12 teeth were lost, the risk of esophageal cancer decreased as the number of teeth lost increased. Conclusion Tooth loss is a risk factor for the occurrence of esophageal cancer in this natural village. When the number of teeth lost is less than 12, the risk of esophageal cancer increases with the number of teeth lost.

ObjectiveTo investigate the mechanism of Tangbikang dry paste in the prevention and treatment of type 2 diabetic peripheral neuropathy （DPN） based on the glyoxalase-1 （GLO-1）/advanced glycation end products （AGE）/receptor for advanced glycation end products （RAGE） pathway. MethodsA total of 56 Sprague-Dawley rats were randomly divided， with eight assigned to the normal group. The remaining 48 rats were fed a high-fat diet combined with intraperitoneal injection of streptozotocin （STZ） to induce a type 2 diabetes mellitus （T2DM） model. Based on blood glucose levels， the rats were randomly assigned to the model group， Tanglin group （13.5 mg·kg^-1）， metformin group （135 mg·kg^-1）， and Tangbikang dry paste low-， medium-， and high-dose groups （3， 6， 12 g·kg^-1）. Successful modeling of DPN was confirmed by a decrease in mechanical pain threshold in the model group at week 4. Fasting blood glucose， body weight， and mechanical pain threshold were measured every 4 weeks. After 16 weeks of intervention， the pathological morphology of the sciatic nerve was observed using hematoxylin-eosin （HE） staining. The expression of RAGE， AGE， protein kinase C （PKC）， and collagen （COL） in the sciatic nerve was assessed by immunohistochemistry. The mRNA expression of RAGE， PKC， Toll-like receptor （TLR）， COL， and GLO-1 was detected using real-time quantitative PCR （Real-time PCR）. Serum levels of aspartate aminotransferase （AST）， alanine aminotransferase （ALT）， creatinine （CREA）， urea （UREA）， interleukin-6 （IL-6）， and tumor necrosis factor （TNF）-α were measured by enzyme-linked immunosorbent assay （ELISA）. ResultsCompared with the normal group， the model group showed significantly increased fasting blood glucose （P<0.01）， decreased body weight and mechanical pain threshold （P<0.01）， and elevated serum AST， ALT， CREA， UREA， IL-6， and TNF-α levels （P<0.01）. The expression of RAGE， AGE， and PKC in the sciatic nerve was significantly increased （P<0.01）， while COL expression was decreased （P<0.01）. The mRNA expression of TLR， RAGE， and PKC was upregulated （P<0.01）， whereas COL and GLO-1 mRNA levels were downregulated （P<0.01）. Histological examination showed irregular nerve morphology， axonal alterations， and myelin degeneration. Compared with the model group， fasting blood glucose levels in the Tangbikang dry paste high-dose group at all time points and in the medium-dose group at weeks 4 and 16 were significantly reduced （P<0.05， P<0.01）. No significant changes in body weight were observed across all Tangbikang dose groups. The mechanical pain threshold was elevated at different time points after administration in all Tangbikang groups （P<0.05， P<0.01）. Serum IL-6 and TNF-α levels were decreased in all dose groups （P<0.05， P<0.01）. The expression of RAGE， AGE， and PKC in the sciatic nerve was reduced （P<0.01）， while COL expression was increased （P<0.01）. The mRNA expression of TLR， RAGE， and PKC was downregulated （P<0.01）， whereas GLO-1 mRNA expression was upregulated （P<0.05， P<0.01）. Additionally， COL mRNA expression was significantly increased in the low- and high-dose groups （P<0.01）. Pathological changes in the sciatic nerve were milder in all Tangbikang groups compared to the model group. ConclusionTangbikang dry paste significantly improves DPN， and its mechanism may be associated with the regulation of the GLO-1/AGE/RAGE signaling pathway.

ObjectiveTo investigate the mechanism of Tangbikang dry paste in the prevention and treatment of type 2 diabetic peripheral neuropathy （DPN） based on the glyoxalase-1 （GLO-1）/advanced glycation end products （AGE）/receptor for advanced glycation end products （RAGE） pathway. MethodsA total of 56 Sprague-Dawley rats were randomly divided， with eight assigned to the normal group. The remaining 48 rats were fed a high-fat diet combined with intraperitoneal injection of streptozotocin （STZ） to induce a type 2 diabetes mellitus （T2DM） model. Based on blood glucose levels， the rats were randomly assigned to the model group， Tanglin group （13.5 mg·kg^-1）， metformin group （135 mg·kg^-1）， and Tangbikang dry paste low-， medium-， and high-dose groups （3， 6， 12 g·kg^-1）. Successful modeling of DPN was confirmed by a decrease in mechanical pain threshold in the model group at week 4. Fasting blood glucose， body weight， and mechanical pain threshold were measured every 4 weeks. After 16 weeks of intervention， the pathological morphology of the sciatic nerve was observed using hematoxylin-eosin （HE） staining. The expression of RAGE， AGE， protein kinase C （PKC）， and collagen （COL） in the sciatic nerve was assessed by immunohistochemistry. The mRNA expression of RAGE， PKC， Toll-like receptor （TLR）， COL， and GLO-1 was detected using real-time quantitative PCR （Real-time PCR）. Serum levels of aspartate aminotransferase （AST）， alanine aminotransferase （ALT）， creatinine （CREA）， urea （UREA）， interleukin-6 （IL-6）， and tumor necrosis factor （TNF）-α were measured by enzyme-linked immunosorbent assay （ELISA）. ResultsCompared with the normal group， the model group showed significantly increased fasting blood glucose （P<0.01）， decreased body weight and mechanical pain threshold （P<0.01）， and elevated serum AST， ALT， CREA， UREA， IL-6， and TNF-α levels （P<0.01）. The expression of RAGE， AGE， and PKC in the sciatic nerve was significantly increased （P<0.01）， while COL expression was decreased （P<0.01）. The mRNA expression of TLR， RAGE， and PKC was upregulated （P<0.01）， whereas COL and GLO-1 mRNA levels were downregulated （P<0.01）. Histological examination showed irregular nerve morphology， axonal alterations， and myelin degeneration. Compared with the model group， fasting blood glucose levels in the Tangbikang dry paste high-dose group at all time points and in the medium-dose group at weeks 4 and 16 were significantly reduced （P<0.05， P<0.01）. No significant changes in body weight were observed across all Tangbikang dose groups. The mechanical pain threshold was elevated at different time points after administration in all Tangbikang groups （P<0.05， P<0.01）. Serum IL-6 and TNF-α levels were decreased in all dose groups （P<0.05， P<0.01）. The expression of RAGE， AGE， and PKC in the sciatic nerve was reduced （P<0.01）， while COL expression was increased （P<0.01）. The mRNA expression of TLR， RAGE， and PKC was downregulated （P<0.01）， whereas GLO-1 mRNA expression was upregulated （P<0.05， P<0.01）. Additionally， COL mRNA expression was significantly increased in the low- and high-dose groups （P<0.01）. Pathological changes in the sciatic nerve were milder in all Tangbikang groups compared to the model group. ConclusionTangbikang dry paste significantly improves DPN， and its mechanism may be associated with the regulation of the GLO-1/AGE/RAGE signaling pathway.

Linxian County in Henan Province, Northern China is known as the region with the highest incidence and mortality rate of esophageal cancer worldwide. Since 1959, the Henan medical team has conducted field work on esophageal cancer prevention and treatment in Linxian. Through three generations of effort exerted by oncologists over 65 years of research on esophageal cancer prevention and treatment in Linxian, the incidence rate of esophageal squamous cell carcinoma in this area has dropped by nearly 50%, and the 5-year survival rate has increased to 40%, reaching the international leading level. This article aims to summarize the history, present opportunities and new challenges, and explore the experience of esophageal cancer prevention and treatment in Linxian (referred to as the “Linxian experience”), providing reference and guidance to cancer prevention and treatment research in China.

OBJECTIVE To investigate the mechanism of catalpol affecting the differentiation of helper T cell 17 （Th17） by interfering the expressions of pyruvate kinase M2 （PKM2） and lactate dehydrogenase A （LDHA）. METHODS The naive CD4+ T cells were selected from the spleen of C57BL/6 mice， and were differentiated into Th17 cells by adding directional differentiation stimulants for 72 hours. At the same time， the cells were treated with 0 （directed control）， 20， 40 and 80 μg/mL catalpol. The flow cytometry was used to detect the proportion of Th17 cell differentiation in cells； the colorimetric method was adopted to detect the levels of pyruvate and lactate in cell culture supernatant； mRNA expressions of retinoid-related orphan nuclear receptor gamma t （RORγt）， PKM2 and LDHA were detected by qRT-PCR method； Western blot was used to detect the expression levels of PKM2， LDHA， signal transducer and activator of transcription 3 （STAT3）， and phosphorylated STAT3 （p-STAT3） proteins in cells. RESULTS Compared with the directed control group， after 72 hours of treatment with 20， 40， 80 μg/mL catalpol， the differentiation ratio of Th17 cells were decreased by 6.74%， 8.41%， 9.24%， and the levels of pyruvate and lactate in the cell culture supernatant， the mRNA expressions of PKM2， LDHA and RORγt as well as the protein expressions of PKM2 and LDHA and the phosphorylation of STAT3 were significantly reduced （P＜0.05）. CONCLUSIONS Catalpol can reduce the glycolysis level by down-regulating the expressions of PKM2 and LDHA， thereby inhibiting the differentiation of Th17 cells.

OBJECTIVE To observe the regulation of aerobic oxidation mediated by HIF-1α/PDHK1 pathway by PNS, and to explore its mechanism of promoting the differentiation of Naive CD4+T cells into Treg cells. METHODS Naive CD4+T cells were isolated from the spleen of C57BL/6 mice by magnetic beads and induced to differentiate into Treg cells for in vitro culture. Naive CD4+T cells were divided into PNS treatment group(5, 10, 20 μg·mL−1), PNS combined with HIF-1α inhibitor(PX-478) group, and the control group was set up. The proportion of Treg cells differentiation was detected by flow cytometry. The expression of HIF-1α and PDHK1 protein was detected by Western blotting. The expression of HIF-1α, PDHK1 and FOXP3 mRNA was detected by real-time fluorescence quantitative PCR. The level of IL-10 in cell culture supernatant was detected by enzyme-linked immunosorbent assay. RESULTS PNS could significantly increase the proportion of Treg cells and the secretion level of IL-10, and increase the expression of FOXP3 mRNA in cells. At the same time, the expression of HIF-1α and PDHK1 protein and mRNA was inhibited. When the cells were treated with 10 μmol·L−1 PX-478 and then treated with 10 μg·mL−1 PNS, the expression of PDHK1 and FOXP3 and the differentiation ratio of Treg cells were not significantly different from those treated with 10 μmol·L−1 PX-478 alone. CONCLUSION PNS can reduce the expression level of PDHK1 by HIF-1α to enhance the aerobic oxidation of Naive CD4+T cells and promote their differentiation into Treg cells.

Objective To explore the correlations between serum soluble growth stimulation gene 2 protein (sST2), brain natriuretic peptide (BNP) and the degree of carotid atherosclerosis in patients with acute ischemic stroke. Methods A total of 205 patients with acute ischemic stroke were selected as study group, and were divided into mild group with 100 cases, moderate group with 70 cases, and severe group with 35 cases according to the severity of carotid atherosclerosis. Another 150 healthy people who received physical examination during the same period were selected as control group. Serum levels of sST2 and BNP were compared among all groups. The correlations of sST2 and BNP levels with the degree of carotid atherosclerosis were analyzed. The influencing factors of different degree of carotid atherosclerosis in patients with acute ischemic stroke were analyzed. The predictive value of sST2 combined with BNP on the degree of carotid atherosclerosis in patients with acute ischemic stroke was analyzed. Results The serum sST2 level of the study group was significantly lower than that of the control group, and the serum BNP level was significantly higher than that of the control group (P < 0.05). The sST2 levels in moderate and severe groups were significantly lower, BNP levels were significantly higher than that in the mild group (P < 0.05). BNP level in the severe group was significantly higher, sST2 level was significantly lower than that in the moderate group (P < 0.05). The degree of carotid atherosclerosis in patients with acute ischemic stroke was correlated with age, history of hypertension, history of smoking, history of diabetes, levels of total cholesterol (TC), C-reactive protein (CRP), homocysteine (Hcy) and low density lipoprotein (LDL) (P < 0.05). Age, hypertension history, smoking history, diabetes history, TC, CRP, Hcy, LDL, BNP and sST2 were the influencing factors for degree of carotid atherosclerosis (P < 0.05). Serum BNP level was positively correlated with the degree of carotid atherosclerosis, while sST2 level was negatively correlated with the degree of carotid atherosclerosis (P < 0.001). The area under the curve (AUC) for the combined prediction of sST2 and BNP was significantly greater than that for the individual prediction of sST2 and BNP (P < 0.001). Conclusion Clinical observation of the changes in serum levels of sST2 and BNP in patients with acute ischemic stroke can effectively assess the progression of the disease, which is beneficial for improving the severity of carotid atherosclerosis in patients. The combined assessment of sST2 and BNP shows good diagnostic performance for evaluating the severity of carotid atherosclerosis in patients with acute ischemic stroke.

Objective:To analyze the effect of panax notoginseng saponins(PNS)on mTORC1-HIF1α signaling pathway,and to explore its effect and mechanisms on the differentiation balance of Th17/Treg cells in CD4+T cells.Methods:Isolate the spleens of C57BL/6 mice,then select CD4+T cells by magnetic beads and cultured in vitro.The optimal concentration of PNS was screened by the CCK-8,and then these cells were divided into control group and PNS treatment group(5,10 and 20 μg/ml),each gives correspond-ing drug treatment after 48 h.Afterwards,flow cytometry was used to detect differentiation of Th17/Treg cells.Real-time quantitative fluorescent PCR was used to detect the expressions of RORγt,Foxp3,mTOR,Raptor,HIF1α mRNA.ELISA was used to detect the levels of IL-17A and IL-10 in the supernatant of cell culture.Western blot was used to detect the expressions and phosphorylation levels of 4EBP1,S6K and HIF1α proteins.Results:5,10,20 μg/ml PNS could significantly inhibit Th17 cells differentiation and promote Treg cells differentiation;5,10,20 μg/ml PNS could significantly reduce the expression of RORγt mRNA,and then reduce the level of IL-17A;20 μg/ml PNS could significantly promote the expression of Foxp3 mRNA and increase the level of IL-10;10,20 μg/ml PNS could significantly decrease the phosphorylation of 4EBP1 and S6K;5,10,20 μg/ml PNS could significantly reduce the expression of HIF1α mRNA and inhibit the expression of HIF1α protein.Conclusion:Certain concentrations of PNS can inhibit the differentiation of Th17 cells in CD4+T cells,and promote the differentiation of Treg cells,which is related with modulating mTORC1-HIF1α signaling pathway.

The purpose of this study was to explore the effect of acute hypoxia on urine proteome in rats. In this study, rats were placed in a hypoxic chamber simulating a plateau environment at an altitude of 5 000 m for 24 hours. Urine samples were collected at 0, 12, and 24 h after hypoxia. Urinary proteins were profiled using liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Compared with the control (before hypoxia), a total of 144 differentially expressed proteins were identified in the hypoxia 12 h group, and 129 differentially expressed proteins were identified in the hypoxia 24 h group. Functional annotation analysis revealed that these differentially expressed proteins were involved in a series of biological pathways related to hypoxic stress, such as anti-oxidative stress, glycolysis, complement and coagulation cascade. Our results suggest that the urinary proteome can reflect significant changes upon acute hypoxic stimulation. These findings may provide an approach to judge the hypoxia state of the body and help to assist the detection of hypoxia state.
Animals ; Rats ; Proteome/analysis* ; Chromatography, Liquid/methods* ; Tandem Mass Spectrometry/methods* ; Proteomics/methods* ; Hypoxia