Efficacy of implantable collamer lens V4c implantation in the treatment of high myopia / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To observe the effect of implantable collamer lens V4c(ICL V4c)implantation on high myopia, and the changes in anterior segment morphology.METHODS:A prospective study was conducted on 100 patients(200 eyes)with high myopia who were treated with ICL V4c implantation in the hospital from February 2018 to March 2021. The best corrected visual acuity(BCVA), uncorrected visual acuity(UCVA), intraocular pressure, higher-order aberration, anterior segment morphology [iridocorneal angle(ICA), central anterior chamber depth(ACD), anterior chamber volume(ACV), central corneal thickness(CCT)and K-value(K)], photopic and scotopic contrast sensitivity before operation and 6 and 12mo after operation were comparatively analyzed.RESULTS:All patients were followed-up. UCVA and BCVA were significantly improved at 6 and 12mo after operation(P<0.05). Total higher-order aberration, horizontal coma and vertical coma showed no significant difference before and after operation(P>0.05). Spherical aberration, ICA, ACD and ACV at 6 and 12mo after operation were significantly smaller than those before operation(P<0.05). Under photopic state, the contrast sensitivity of 3.0 and 6.0 c/d was significantly higher at 6 and 12mo after operation when compared with that before operation(P<0.05). Under scotopic state, the contrast sensitivity of 6.0 c/d was significantly higher at 6 and 12mo after operation when compared with that before operation(P<0.05); there was no significant difference in CCT, K, or intraocular pressure before and after operation(P>0.05).CONCLUSION:Although ICA, ACD and ACV in patients with high myopia are reduced after ICL V4c implantation, the operation can effectively improve visual acuity and visual quality.

Mechanism of Astragali Radix-Curcumae Rhizoma in treating gastric cancer based on network pharmacology and experimental verification / 中国中药杂志

This study aims to investigate the mechanism of Astragali Radix-Curcumae Rhizoma(HQEZ) in the treatment of gastric cancer based on network pharmacology. Further, the SGC7901 cell model of gastric cancer was employed to validate the efficacy and key targets of the herb pair. Firstly, the CCK-8 assay was employed to evaluate the direct effect of HQEZ on the proliferation of gastric cancer SGC7901 cells. Then, network pharmacology methods were employed to investigate the active ingredients, key targets, and key signaling pathways involved in the treatment of gastric cancer with HQEZ. The results showed that HQEZ contained 18 potential active ingredients, such as quercetin, naringenin, and curcumin. The results of gene ontology(GO) functional annotation and Kyoto Encyclopedia of Genes and Genomes(KEGG) pathway enrichment suggested that the main targets of HQEZ in treating gastric cancer were involved in the regulation of protein serine/threonine kinase activity, activation of mitogen-activated protein kinase(MAPK) activity, cysteine-type endopeptidase activity, and negative regulation of protein serine/threonine kinase activity. The hypoxia-inducible factor-1(HIF-1) signaling pathway, ATP-binding cassette(ABC) transporters, cytochrome P450-mediated metabolism of xenobiotics, p53 signaling pathway, and cell apoptosis were key signaling pathways of HQEZ in treating gastric cancer. The cell experiments demonstrated that HQEZ significantly downregulated the expression of ATP-binding cassette subfamily B member 1(ABCB1), epidermal growth factor receptor(EGFR), phosphorylated serine/threonine kinase(p-AKT), hypoxia inducible factor 1 subunit alpha(HIF1A), B-cell lymphoma 2(BCL2), breast cancer susceptibility protein 1(BRCA1), DNA polymerase theta(POLH), ribonucleotide reductase M1(RRM1), and excision repair cross-complementation group 1(ERCC1), and upregulated the expression of tumor protein P53(TP53) and cysteinyl aspartate-specific proteinase(CAPS3). Finally, a multivariate COX regression model was adopted to study the relationship between gene expression and clinical information data of gastric cancer patients in the TCGA database, which demonstrated that the key targets of HQEZ were associated with the poor prognosis in gastric cancer patients. Further feature selection using the LASSO algorithm showed that EGFR, HIF1A, TP53, POLH, RRM1, and ERCC1 were closely associated with the survival of gastric can-cer patients. In conclusion, HQEZ regulates the expression of genes involved in DNA repair, survival, and apoptosis in gastric cancer cells via multiple targets and pathways, assisting the treatment of gastric cancer.

Advances in basic research on choline and central nervous system development and related disorders / 中华预防医学杂志

Choline is an essential nutrient that plays an integral role in all stages of the life cycle, with increasing interest in the relationship between choline and neurodevelopment. Choline is a major component in the synthesis of phospholipids, phosphatidylcholine and sphingolipids, and is an essential nutrient for methyl metabolism, acetylcholine synthesis and cell signaling. Choline plays an important role in neurogenesis and neural migration during fetal development, potentially influencing the development and prognosis of neurological disorders, but its mechanism of action is not yet clear. This article reviews the source and metabolism of choline, the effects and mechanism of choline on neurodevelopment and central nervous system related disorders.

Investigation on occupational hazards of non-coal mines in Hunan Province in 2021 / 中国职业医学

@#Abstract: Objective - To understand the status of occupational hazards in non coal mine mountains in Hunan Province. Methods - - A cross sectional survey was conducted on 432 non coal mining enterprises in Hunan Province in 2021. The field ， occupational health survey occupational disease hazard factors detection and occupational health monitoring data analysis were Results - carried out. Limited liability companies and private enterprises were the main economic types of non coal mining ， ， mountains in Hunan Province accounting for 55.3% and 32.4% respectively. The size of enterprises was mainly small and ， ； - micro enterprises accounting for 59.3% and 35.2% respectively 78.0% of the enterprises were in non metallic mining. The - ， over standard rates of silica dust and noise in workplaces were 17.1% and 29.4% respectively. The exposure rate of ， （P ） occupational hazard factor was 47.3%. The smaller the enterprise scale the higher the exposure rate <0.01 . The number of ， ， people exposed to silica dust and noise was the largest with the exposure rate of 29.4% and 31.0% respectively. The rates of ， occupational health training for persons in charge of enterprises occupational health management personnel and workers were ， ， ， 73.8% 73.4% and 85.0% respectively. The smaller the enterprise scale the lower the occupational health training rates of ， ， enterprise leaders occupational health management personnel and workers and the lower the implementation rates of （ P ） - - enterprise occupational health examination all <0.05 . The fully installed rate and effective rate of occupational disease ； prevention facilities were 6.9% and 1.6% respectively and the fully deployed rate and effective wearing rate of personal ， protective equipment were 11.1% and 6.2% respectively. The detection rates of occupational contraindications and suspected ， Conclusion occupational diseases in workers exposed to silica dust and noise were 2.0% and 2.9% respectively. The - ， occupational risks such as silica dust and noise are serious in non coal mine mountains of Hunan Province and the foundation of occupational health management is weak in small and micro enterprises.

Identification and attribution of chemical constituents of Qingfei Paidu Decoction based on UHPLC-LTQ-Orbitrap-MS technology / 中国中药杂志

UHPLC-LTQ-Orbitrap-MS was developed for the identification of chemical constituents in Qingfei Paidu Decoction, which will clarify its material basis. ACQUITY UHPLC HSS T3 chromatography column(2.1 mm×100 mm, 1.8 μm) was used with 0.1% formic acid(B)-acetonitrile(A) as the mobile phase in gradient elution. The decoction was detected by high-resolution liquid chromatography-mass spectrometry equipped with an ESI ion source in positive and negative mode. Based on the accurate mass measurements, retention time, mass fragmentation patterns combined with comparison of reference and literature reports, a total of 87 major compounds including 43 flavonoids, 9 alkaloids, 4 triterpenoid saponins, 1 sesquiterpene, 2 coumarins, 10 phenolic acids and 18 other compounds were tentatively screened and characterized. UHPLC-LTQ-Orbitrap-MS was employed to comprehensively elucidate the chemical components in Qingfei Paidu Decoction, which basically covered 20 Chinese medicines except gypsum in Qingfei Paidu Decoction. These collective results provide a scientific basis for further research on the quality control standard of Qingfei Paidu Decoction.

Effect of Qizhi Zhenwutang in Improving Renal Interstitial Fibrosis and Its Mechanism on Unilateral Ureteral Obstruction in Rats / 中国实验方剂学杂志

Objective:To explore the effect of Qizhu Zhenwutang on renal interstitial fibrosis in rats ligated with unilateral ureter， transforming growth factor-β1 （TGF-β1）/Smads and oxidative stress. Method:A total of 30 male SD rats were randomly divided into sham operation group， model group， high-dose group， low-dose group and irbesartan group （n=6）. The left ureter ligation was performed in the model group and the treatment group. In the sham operation group， the ureter was not ligated， only the ureter was separated， and the abdominal cavity was closed. Rats in each group were given drugs by gavage on the next day after operation. Sham operation group and model group were given aseptic distilled water 10 mL·kg-1 by gavage， high-dose Qizhizhenwu Tang group was given 22.2 g·kg-1 by gavage， low-dose group was given 11.1 g·kg-1 by gavage， and irbesartan group was given 0.02 g·kg-1 by gavage. Rats in each group were sacrificed on the 14th day after operation， 24-hour urine was collected before sampling， and the total amount of 24 hour urine protein （24 h-Upr） was detected. Blood samples were collected from the abdominal aorta to detect serum creatinine（SCr） and blood urea nitrogen （BUN）. The tissues were stained with htoxylin eosin （HE） and Masson， and the pathological changes were observed under light microscope， immunohistochemical method was used to detect α-SMA， FN and Col-Ⅰ expressions. Western blot method was used to detect the expressions of TGF-β1， Smad3， p-Smad3 and NOX4. Result:Compared with sham group， SCr， BUN and collagen volume fraction （CVF），24 h-Upr in model group were all increased （P<0.05， P<0.01）. The expressions of α-SMA， Col-Ⅰ， FN， TGF-β1， p-Smad3， NOX4 were higher （P<0.05）. Compared with the model group， SCr， BUN and CVF were lower in high-dose group and irbesartan group （P<0.05）. 24 h-Upr was lower in high-dose group （P<0.05）， the expressions of α-SMA， Col-Ⅰ， FN， TGF-β1， Smad3， p-Smad3， NOX4 in traditional Chinese medicine treatment group were less （P<0.05）. Conclusion:Qizhi Zhenwutang can reduce the urinary protein of UUO rats， protect the renal function， and inhibit the occurrence and development of renal interstitial fibrosis， the mechanism may be related to the inhibition of TGF-β1/Smads signaling pathway and oxidative stress response.

The correlation between hyperhomocysteinemia and hyperuricemia in the population undergoing physical examination / 中华健康管理学杂志

Objective:To investigate the correlation between hyperhomocysteinemia (HCA) and hyperuricemia (HUA).Methods:A total of 8 465 individuals who received a medical examination at the Xiangya Hospital Health Management Center of Central South University were selected as research subjects from January to June 2018. The multi-factor binary Logic regression method was adopted and four different models. The ratio ( OR) and its 95% trusted interval ( CI) between Hhcy group and normal control group were analyzed. Results:Compared to the normal control group, the OR(95% CI) of the probability of HUA in the Hhcy population was 3.272 (95% CI: 2.839 to 3.771, P<0.001) without correcting other factors; After correcting the influence of age and gender, the OR (95% CI) of the Hhcy population with HUA probability was 2.111 (95% CI: 1.811-2.461, P<0.001); After correcting age, gender, Body Mass Index (BMI), blood pressure, fasting blood sugar, triglycerin, low-density lipoprotein, and high-density lipoprotein, the OR(95% CI) of the Hhcy population with HUA probability was 2.163 (95% CI: 1.845 to 2.535, P<0.001); After correcting age, sex, BMI, blood pressure, fasting blood sugar, triglycerin, low-density lipoprotein, high-density lipoprotein, drinking, smoking, exercise time, and exercise intensity, the OR (95% CI) of the Hhcy population had a HUA probability of 2.209(95% CI: 1.845 to 2.646, P<0.001). Conclusion:The cross-sectional study confirmed that Hhcy was positively correlated with HUA. Reducing homocysteine levels may be a new approach to the health management of HUA.

Effects of fluorine exposure on miR-204 and BDNF-TrkB pathways in HT22 hippocampal neurons / 中华地方病学杂志

Objective:To explore the changes of microRNA (miRNA, miR)-204, brain-derived neurotrophic factor (BDNF) and tyrosine kinase receptor B (TrkB) expression levels in HT22 hippocampal neurons exposed to fluorine.Methods:The HT22 cells were exposed to NaF at 0, 2, 4, 6, 8, 10 mg/L. After 24 h, the cell viability was detected by CCK-8. According to the cell survival rate, the NaF concentrations [0.0 (control), 2.5, 5.0 and 10.0 mg/L] were selected for subsequent experiments. The infected (without transfection) and transfected (with the addition of miR-204 agonist) HT22 cells were both exposed to NaF for 24 h. The miR-204, BDNF and TrkB mRNA expression levels in cells were detected by Real time fluorescence quantitative PCR(qRT-PCR); the BDNF and TrkB protein expression levels in cells were detected by Western blotting.Results:Compared with the control group, the cell viabilities in fluorine exposure groups were decreased ( P < 0.01). In the infected groups, compared with the control group, and the miR-204 expression levels were increased ( P < 0.05 or < 0.01). The expressions of BDNF mRNA were decreased in fluorine exposure groups at 5.0 and 10.0 mg/L ( P < 0.01) and the BDNF protein expressions were decreased in all fluorine exposure groups ( P < 0.05 or < 0.01). In the exposure groups, TrkB mRNA expressions were decreased ( P < 0.05 or < 0.01). The TrkB protein expressions were decreased in fluorine exposure groups at 5.0 and 10.0 mg/L ( P < 0.01). In the transfected groups, compared with the control group, the expressions of miR-204 were increased ( P < 0.01) and the mRNA and protein expressions of BDNF and TrkB were decreased ( P < 0.01). The negative correlation was found between NaF concentration and cell survival rate ( r = - 0.989, P < 0.01). Moreover, the mRNA and protein expressions of BDNF and TrkB were negative correlated with NaF concentration ( r = - 0.746, - 0.853, - 0.889, - 0.827, P < 0.01). A positive correlation was found between NaF concentration and miR-204 expression ( r = 0.889, P < 0.01). However, the mRNA and protein expressions of BDNF and TrkB were negative correlated with miR-204 expression ( r = - 0.766, - 0.770, - 0.594, - 0.523, P < 0.01). The positive correlations were found between BDNF mRNA and protein expressions and those of TrkB ( r = 0.657, 0.869, P < 0.01). Conclusion:Fluorine has inhibited the cell activity of HT22, and the mechanism of action may be related to the inhibition of BDNF-TrkB pathway after up-regulation of miR-204 expression.

Clinical value of contrast-enhanced ultrasound and gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging in the diagnosis of hepatocellular carcinoma / 中华消化外科杂志

Objective:To investigate the clinical value of contrast-enhanced ultrasound and gadolinium-ethoxybenzyl-diethylenetriamine pentaacetic acid-enhanced magnetic resonance imaging (Gd-EOB-DTPA MRI) in the diagnosis of hepatocellular carcinoma (HCC).Methods:The clinically diagnostic test was conducted. The clinicopathological data of 274 lesions in 250 patients with liver neoplasms who were admitted to the First Hospital Affiliated to Army Medical University from January 2017 to December 2018 were collected. There were 204 males and 46 females, aged (52±11)years, with a range from 22 to 78 years. Patients underwent contrast-enhanced ultrasound and Gd-EOB-DTPA MRI, and they received surgical resection or biopsy within one month. Images was read and analyzed by two senior radiologists for diagnosis. Observation indicators: (1) imaging features of contrast-enhanced ultrasound and Gd-EOB-DTPA MRI, including ① imaging features of contrast-enhanced ultrasound, ② imaging features of Gd-EOB-DTPA MRI, ③ enhanced imaging manifestation in different phases of 223 HCC lesions; (2) dignostic performance of contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis, including ① sensitivity, specificity and accuracy rate of the three methods for HCC diagnosis and ② sensitivity, specificity and accuracy rate of the three methods for HCC diagnosis in lesions with different diameters. Count data were represented as absolute numbers or percentages, and comparison between groups was analyzed using the chi-square test or Fisher exact probability. With the pathological examination as the golden criteria of diagnosis, the sensitivity, specificity and accuracy rate of the contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis were calculated.Results:(1) Imaging features of contrast-enhanced ultrasound and Gd-EOB-DTPA MRI. ① Imaging features of contrast-enhanced ultrasound: of the 223 HCC lesions on contrast-enhanced ultrasound, 167 lesions were accorded with fast in fast out of HCC, 7 were missed diagnosed and 49 were misdiagnosed. Of the 51 non-HCC lesions on contrast-enhanced ultrasound, 7 lesions were accorded with fast in fast out, including 3 of combined hepatocellular-cholangiocarcinoma, 2 of intrahepatic cholangiocarcinoma, 1 of neuroendocrine tumor, 1 of inflammatory granuloma, 44 lesions were no fast in fast out. ② Imaging features of Gd-EOB-DTPA MRI: of the 223 HCC lesions on Gd-EOB-DTPA MRI, 178 lesions were accorded with fast in fast out of HCC, 1 was missed diagnosed and 44 were misdiagnosed. Of the 51 non-HCC lesions on Gd-EOB-DTPA MRI, 5 lesions were accorded with fast in fast out, inlcuding 2 of intrahepatic cholangiocarcinoma, 1 of combined hepatocellular-cholangiocarcinoma, 1 of neuroendocrine tumor, 1 of inflammatory granuloma, 46 lesions were no fast in fast out. ③ Enhanced imaging manifestation in different phases of 223 HCC lesions. In arterial phase, 92.83%(207/223) of the lesions displayed hyper-enhanced on contrast-enhanced ultrasound, and 80.72%(180/223) of the lesions displayed hyper-enhanced on Gd-EOB-DTPA MRI, showing a significant difference ( χ2=14.240, P<0.05). In portal vein phase or late phase, 78.48%(175/223) of the lesions displayed hypo-enhanced on contrast-enhanced ultrasound, and 96.41%(215/223) of the lesions displayed hypo-enhanced on Gd-EOB-DTPA MRI, showing a significant difference ( χ2=32.674, P<0.05). On Gd-EOB-DTPA MRI, 96.41%(215/223) of the lesions displayed low signals in portal-vein phase or late phase, and 98.21%(219/223) of the lesions displayed low signals in hepatobiliary phase, showing no significant difference ( χ2=1.370, P>0.05). (2) Dignostic performance of contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis. ① Sensitivity, specificity and accuracy rate of the three methods for HCC diagnosis: the sensitivities of contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis were 74.89%(167/223), 79.82%(178/223), 94.62%(211/223), respectively. The specificities of contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis were 86.27%(44/51), 90.20%(46/51), 80.39%(41/51). The accuracy rates of contrast-enhanced ultrasound, Gd-EOB-DTPA MRI, or the combined examinations for HCC diagnosis were 77.01%(211/274), 81.75%(224/274), 91.97%(252/274). There were significant differences in the sensitivity and accuracy rate among the three methods ( χ2=33.499, 23.345, P<0.05). There was no significant difference in the specificity among the three methods ( χ2=2.017, P>0.05). ② Sensitivity, specificity and accuracy rate of the three methods for HCC diagnosis in lesions with different diameters: 128 of 274 lesions had the maximun diameter>3 cm and ≤5 cm, 92 lesions had the maximun diameter >2 cm and ≤3 cm, 54 lesions had the maximun diameter≤ 2 cm. The sensitivities of contrast-enhanced ultrasound for HCC diagnosis in lesions with the maximun diameter>3 cm and ≤5 cm, >2 cm and ≤3 cm, ≤2 cm were 81.19%(82/101), 76.92%(60/78), 56.82%(25/44), the specificities were 92.59%(25/27), 71.43%(10/14), 90.00%(9/10), and the accuracy rates were 83.59%(107/128), 76.09%(70/92), 62.96%(34/54), respectively. The sensitivities of Gd-EOB-DTPA MRI for HCC diagnosis in lesions with the maximun diameter>3 cm and ≤5 cm, >2 cm and ≤3 cm, ≤2 cm were 83.17%(84/101), 79.49%(62/78), 72.73%(32/44), the specificities were 96.30%(26/27), 85.71%(12/14), 80.00%(8/10), and the accuracy rates were 85.94%(110/128), 80.43%(74/92), 74.07%(40/54), respectively. The sensitivities of contrast-enhanced ultrasound combined with Gd-EOB-DTPA MRI for HCC diagnosis in lesions with the maximun diameter>3 cm and ≤5 cm, >2 cm and ≤3 cm, ≤2 cm were 95.05%(96/101), 96.15%(75/78), 90.91%(40/44), the specificities were 92.59%(25/27), 57.14%(8/14), 80.00%(8/10), and the accuracy rates were 94.53%(121/128), 90.22%(83/92), 88.89%(48/54), respectively. There were significant differences in the sensitivities for HCC diagnosis in lesions with the maximun diameter>3 cm and ≤5 cm, >2 cm and ≤3 cm, ≤2 cm among the three methods ( χ2=9.703, 12.777, 13.142, P<0.05). There were also significant differences in the accuracy rates ( χ2=8.051, 6.600, 9.826, P<0.05). There was no significant difference in the specificies ( P>0.05). Conclusions:There was no significant difference in the dignostic performance for HCC diagnosis between contrast-enhanced ultrasound and Gd-EOB-DTPA MRI, and the combination of contrast-enhanced ultrasound and Gd-EOB-DTPA MRI can improve the diagnostic sensitivity and accuracy rate of HCC.

Clinical predictive value of TCD in monitoring cerebral circulation in sepsis patients / 中华急诊医学杂志

Objective:To study the dynamic evaluation value of transcranial Doppler (TCD) in cerebral circulation and brain function of sepsis patients and its predictive value of the prognosis.Methods:A retrospective analysis was performed on 98 sepsis patients admitted to our hospital from January 2017 to June 2018 who were divided into the survival group (56 cases) and death group (42 cases) according to the 28-day prognosis. The general clinical data of the patients, acute physiology and chronic health evaluation II (APACHE II), delirium assessment scale (CAM-ICU), and TCD parameters PSV, Vm, EDV, PI, RI on the first day and the third day of admission were collected, and the differences of TCD parameters at different time points were analyzed between the two groups, the area under the ROC curve (AUC) was calculated and evaluating their predictive value of sepsis outcome was evaluated.Results:APACHE Ⅱscore and the number of patients with sepsis encephalopathy were significantly higher in the death group than those in the survival group ( P < 0.05). There were no significant differences in PSV, Vm and EDV between the two groups on the first day and the third day. The PI and RI of the survival group were significantly lower than those of the death group ( P<0.01). In the survival group, PI and RI on the third day decreased significantly compared with those on the first day ( P < 0.05), while in the death group, PI and RI on the first day and the third day did not change significantly. ROC survival curves showed that Day1PI, Day3PI, Day1PI - Day3PI, Day1RI, Day3RI, Day1RI - Day3RI and APACHEⅡ predicted AUC of the prognosis of sepsis patients were 0.657, 0.835, 0.730, 0.707, 0.826, 0.705, and 0.815 ( P < 0.01). When PI cutoff value on the third day became 1.02, the sensitivity was 85.7% and the specificity was 61.3%. When RI cutoff value on the third day became 0.62, the sensitivity was 78.6% and the specificity was 71.4%. Conclusions:TCD parameters, PI and RI, are of certain value in the dynamic evaluation of cerebral circulation and brain function in sepsis patients. PI and RI on the first day and the third day and the differences between them are all valuable in predicting the prognosis, and PI and RI on the third day have greater predictive value.

The value of left atrial structural and functional parameters combined with cardiac biomarkers in predicting left atrial spontaneous echo contrast in patients with non‐valvular atrial fibrillation / 中华超声影像学杂志

Objective To investigate the relationships between the structure ,function of left atrial as well as cardiac biomarkers and left atrial spontaneous echo contrast ( SEC ) in patients with non‐valvular atrial fibrillation ( NVAF ) ,and evaluate its predictive value for left atrial SEC . Methods T hirty‐four control subjects and 80 patients with NVAF were included ,patients with NVAF were divided into positive group ( 30 cases) and negative group ( 50 cases) according to w hether SEC was presented on transesophageal echocardiography ( T EE ) . Clinical and laboratory data were collected ,including medical history ,cardiac troponin I ( cT nI) ,and pro‐brain natriuretic peptide ( pro‐BNP ) ,etc . T hen CHA2 DS2‐VASc scores were calculated .The left atrial appendage width ( W LAA ) ,left atrial appendage depth ( DLAA ) ,left atrial appendage blood flow velocity ( V LAA ) ,left atrial volume index ( LAVI) and other parameters were measured by T EE and transthoracic echocardiography ( T T E) ,and left atrial ejection fraction ( LAEF ) was calculated . T he clinical and T EE parameters were compared between the positive and negative group ,T T E parameters and cardiac biomarkers levels were compared among the three groups ,and ROC curve was used to evaluate the diagnostic efficiency . Results ①Compared with those in control group ,the value of LAVI and pro‐BNP were significantly increased and LAEF was significantly decreased in negative group ( all P ＜ 0 .01 ) . ②Compared with those in negative group ,CHA 2 DS2‐VASc scores ,WLAA ,DLAA ,LAVI and pro‐BNP levels in positive group showed a significant increase ( all P ＜0 .01) ,LAEF and VLAA showed a significant reduction ( all P ＜0 .01) . ③cT nI between negative group and control group did not show statisticant difference ( P＞0 .05) ,but presented a significant increase in positive group compared with those in control group and negative group (all P ＜0 .01).T he AUC ,sensitivity and specificity of CHA 2 DS2‐VASc scores for SEC were 0 .71 (95% CI :0 .60 ～ 0 .82 ) ,73 .3% and 62 .0%,respectively .When left atrial structural and functional parameters (LAVI and LAEF ) combined with cardiac biomarkers (cT nI and pro‐BNP ) ,the AUC , sensitivity and specificity for SEC were 0 .90 (95% CI :0 .84 ～ 0 .97 ) ,74 .0% and 100%,respectively ,both enhanced w hen compared with CHA 2 DS2‐VASc scores alone ( P ＜ 0 .01 ).Conclusions Left atrial enlargement ,decreased function and elevated levels of cardiac biomarkers are associated with left atrial SEC in patients with NVAF .CHA2 DS2‐VASc scores can be used for perdicting left atrial SEC ,left atrial structural and functional parameters (LAVI and LAEF) combined with cardiac biomarkers (cT nI and pro‐BNP) provide significant increments in prediction of left atrial SEC .

Anti-colorectal Cancer Molecular Mechanism of Astragali Radix and Curcumae Rhizoma Based on Network Pharmacology / 中国实验方剂学杂志

Objective:The network pharmacology method was used to predict targets and signaling pathways of the drug pair Astragali Radix and Curcumae Rhizoma in treating colorectal cancer,in order to analyze the effective material basis and action mechanism. Method:Disease targets for colorectal cancer were collected through Therapetutic Target Database(TTD)and Drugbank database. Components of Astragali Radix and Curcumae Rhizoma were obtained from the Traditional Chinese Medicine Systems Pharmacology Database, and the Analysis Platform (TCMSP). ChemMapper and PharmMapper database were used to predict the disease targets of effective components. The "compound-disease targets" network model was established by Cytoscape software. The function analysis of gene ontology(GO)and the enrichment analysis of Kyoto encyclopedia of genes and genomes(KEGG)were carried out with ClueGO plug-in. Result:The network contained 56 compounds and 54 targets. The crucial targets included 5'-AMP-activated protein kinase catalytic subunit alpha1(PRKAA1), prostaglandin G/H synthase 1(PTGS1), prostaglandin G/H synthase 2(PTGS2), Thymidylate synthase(TYMS), Carboxylesterase 1(CES1), vascular endothelial growth factor B(VEGFB), vascular endothelial growth factor A(VEGFA), glutathione S-transferase P(GSTP1), and serine hydroxymethyltransferase 1(glyA). Function about target genes inclined to peptide-tyrosine phosphorylation, extracellular regulated protein kinase(ERK)1 and ERK2 signal series, negative regulation of endothelial cell apoptosis process, et al. Important KEGG Pathways involved pathways in cancer, Ras signaling pathways, Rap1 signaling pathways, and phosphatidylinositol 3-kinase (PI3K)/Akt signaling pathways. Conclusion:The anti-colorectal cancer activities of Astragali Radix and Curcumae Rhizoma were mainly affected by inhibiting cell proliferation and differentiation, promoting tumor cell apoptosis, resisting tumor angiogenesis, and enhancing immunity as phenotype intervention mode in network. The active signaling pathway is most related to Ras signaling pathway, Rap1 signaling pathway and PI3K/Akt signaling pathway.

Investigation of Analgesic Mechanisms of Bupleuri Radix with Network Pharmacology / 中国药学杂志

OBJECTIVE: To analyze the major analgesic mechanism and target of Bupleuri Radix with a network pharmacology method, clarify the difference targets between oral administration and injection administration, and validate the possible biological target for its quality evaluation. METHODS: The chemical components and potential targets of Bupleuri Radix were collected based on the database and literature searching and the analgesic associated targets were searched from Genecards database. All of the targets combined with interactional proteins from DIP database were used to construct a “compound-target-disease” network and the major analgesic mechanism of Bupleuri Radix were then predicted by the key function targets screened from it. RESULTS: According to the results of network analysis, 13 key targets were screened out, including trypsin-1, prothrombin, dipeptidyl peptidase 4, acetylcholinesterase, COX-2, androgen receptor, estrogen receptor, GABA receptor α1 and NOS-3, which might affect the process of cell proliferation, arginine catabolic process, platelet activation and so on. Trypsinogen-1, cyclooxygenase-2 and nitric oxide synthase-3 were the main targets for both of them, and could be used as the targets for biological evaluation of Bupleuri Radix. At the same time, there were some differences between oral administration and injection of Bupleuri Radix, the excessive effects of injection components on prothrombin may be associated with the adverse reactions of injection. Otherwise, inhibition of COX-2 enzyme activity by in vitro testing showed that Bupleuri Radix has good activity at the concentration of 3.125-50 μg•mL-1. CONCLUSION: Network pharmacology provides the potential to predict the analgesic mechanism and to establish new quality evaluation METHODS of Bupleuri Radix.

Association between serum copper concentration and hypertension in knee osteoarthritis patients / 中南大学学报(医学版)

To examine the association between serum copper concentration and the prevalence of hypertension in patients with knee osteoarthritis (OA).
 Methods: A total of 935 patients who were aged ≥40 years and underwent routine checkups from October 2013 to November 2014 at the Health Management Center of Xiangya Hospital, Central South University were included. They were diagnosed as knee OA by weight-bearing bilateral anteroposterior radiography. Serum copper concentration was measured using the chemiluminescence method. Blood pressure was measured by an electronic sphygmomanometer. The association between serum copper concentration and hypertension was evaluated by conducting multivariable adjusted logistic regression.
 Results: Compared with the lowest quintile, the multivariable-adjusted odds ratio (OR) and related 95% confidence interval (95% CI) of hypertension were 1.46 (95% CI 1.02 to 2.09, P for trend=0.035) and 1.47 (95% CI 0.77 to 2.78, P for trend=0.032) in the total population and female subgroup of the highestest quintile, respectively. There was no significant association between serum copper and hypertension in male subgroup among OA patients (OR=1.21, 95% CI 0.76 to 1.93, P for trend=0.354).
 Conclusion: The serum copper concentration was significantly associated with the prevalence of hypertension in total population and female subgroup, but may not in male subgroup among patients with knee OA.

Lung cancer screening with low-dose spiral CT in a unit staff: Results of the baseline screening / 中南大学学报(医学版)

To analyze the incidence and imaging characteristics of pulmonary nodules in a unit staff.
 Methods: Low-dose spiral CT (LDCT) scan were performed in 1 372 staffs ≥45 years old in a certain unit during the physical examination. The clinical and imaging data were collected to analyze the detection rate, imaging characteristics, and postoperative pathological conditions of pulmonary nodules.
 Results: The total detection rate for pulmonary nodules was 30.39% (417/1 372). The detected nodules were mainly single (227 cases), solid (343 cases), 0.05). Compared with the Lung-RADS category 3 nodules, the proportions of nodules in subsolid state, with irregular shape, lobulation sign, and vascular penetration in the Lung-RADS category 4 were increased (all P<0.05). Among them, 11 patients received surgical therapy, including 10 women. Postoperative pathology confirmed lung adenocarcinoma in 9 patients (2.16%), including 8 women, all non-smokers.
 Conclusion: The nodules in subsolid state with vascular penetration, irregular shape and lobulation sign tend to be malignant. Lung cancer screening with low-dose spiral CT in female non-smokers should be emphasized.

Clinical Diagnosis and Treatment Recommendations for Adverse Reaction in the Nervous System Related to Immunocheckpoint Inhibitor / 中国肺癌杂志

Immune checkpoint inhibitors (ICIs) can cause adverse reactions in the nervous system, with the incidence rate ranging from 0.1% to 12%, and 80% occurring within the first 4 months of ICI application. It can cause lesions in various parts of the nervous system, including aseptic meningitis, meningoencephalitis, necrotizing encephalitis, brainstem encephalitis, transverse myelitis and other central nervous system diseases. It can also cause cranial peripheral neuropathy, multifocal radicular neuropathy, Guillain-Barre syndrome, spinal radicular neuropathy and myasthenia gravis, myopathy, etc. For these complications of the nervous system, diagnosis could be made by sufficient collection of disease manifestations combined with imaging, cerebrospinal fluid examinations, electro-encephalogram or electro myography to exclude infection or tumor progression. In the treatment of severe cases, ICIs should be discontinued and treated with high doses of glucocorticoid or gamma globulin with systemic support. After neurological adverse reactions, the prognosis of severe cases is poor.

Decreased β-Cell Function is Associated with Cardiovascular Autonomic Neuropathy in Chinese Patients Newly Diagnosed with Type 2 Diabetes / 神经科学通报·英文版

The influence of β-cell function on cardiovascular autonomic neuropathy (CAN), an important diabetes-related complication, is still unclear. In this study, we aimed to investigate the association between residual β-cell function and CAN in patients newly diagnosed with type 2 diabetes. We enrolled 90 newly-diagnosed type 2 diabetic patients and 37 participants with normal glucose tolerance as controls. The patients were divided into a CAN+ group (diabetic patients with CAN, n = 20) and a CAN- group (diabetic patients without CAN, n = 70) according to the standard Ewing battery of tests. Fasting and postprandial plasma glucose, insulin, and C-peptide were measured. Homeostasis model assessment-beta cells (HOMA-B) and HOMA-insulin resistance (IR) were calculated. The prevalence of CAN in this population was 22.2%. Compared with the CAN- group, the CAN+ group had significantly lower fasting plasma insulin (6.60 ± 4.39 vs 10.45 ± 7.82 μ/L, P = 0.029), fasting C-peptide (0.51 ± 0.20 vs 0.82 ± 0.51 nmol/L, P = 0.004), and HOMA-B (21.44 ± 17.06 vs 44.17 ± 38.49, P = 0.002). Fasting C-peptide was correlated with the Valsalva ratio (r = 0.24, P = 0.043) and the 30:15 test (r = 0.26, P = 0.023). Further analysis showed that fasting C-peptide (OR: 0.041, 95% CI 0.003-0.501, P = 0.012) and HOMA-B (OR: 0.965, 95% CI 0.934-0.996, P = 0.028) were independently associated with cardiovascular autonomic nerve function in this population. The patients with fasting C-peptide values < 0.67 nmol/L were more likely to have CAN than those with C-peptide levels ≥0.67 nmol/L (OR: 6.00, 95% CI 1.815-19.830, P = 0.003). A high prevalence of CAN was found in patients with newly-diagnosed type 2 diabetes. Decreased β-cell function was closely associated with CAN in this population.

CMR and CT examination of hypertrophic cardiomyopathy in children / 中国实用儿科杂志

Hypertrophic cardiomyopathy(HCM)is an inherited cardiomyopathy characterized by left ventricular hypertrophy without ventricular enlargement,which is one of the main causes of athletic sudden death in adolescents. Early detection of symptoms and timely diagnosis and treatment are of great value in preventing athletic sudden death and improving the prognosis. The diagnosis of HCM is based on medical history,physical examination and echocardiography,as well as family history and genetic testing in recent years. In recent years,cardiac magnetic resonance(CMR)and CT examination have become more and more important in the diagnosis of HCM. The aim of the article is to explore the characteristics of CMR and CT in the diagnosis of HCM.

A rare case of paediatric meningioma masquerading as intra-axial lesion

@#Meningiomas are neoplasm arising from meningoepithelial cells, most commonly in the fifth to sixth decade of life. Meningiomas are rare in paediatric population, accounting for 0.4-4.1% of all paediatric tumours and less than 3% of paediatric brain tumours. However, meningiomas represent the most common dural based tumours in children. We describe a rare case of paediatric fibroblastic meningioma within the left middle cranial fossa masquerading as an intra-axial mass lesion. Our discussion will be centred on atypical features of paediatric meningiomas and differential diagnosis of extra-axial mass lesion in the paediatric population.

The value of contrast-enhanced ultrasound and contrast-enhanced CT in the differential diagnosis of benign and malignant gallbladder diseases / 中华医学超声杂志（电子版）

Objective To comparatively analyze the image characteristic of contrast-enhanced ultrasound(CEUS)and contrast-enhanced computed tomography(CECT),and explore the diagnostic value of the two methods in benign and malignant lesions of gallbladder.Methods comparative analysis the image characteristic of CEUS and CECT,the preoperative diagnostic results of 86 cases of gallbladder diseases were confirmed by pathology.Results The enhancement patterns of CEUS and CECT in benign and malignant lesions of gallbladder are similar.The sensitivity,specificity and accuracy of CEUS were 77.9%(53/68),77.8%(14/18),77.9%(67/86),respectively.The sensitivity,specificity and accuracy of CECT were 75%(51/68),55.6%(10/18),70.9%(61/86),respectively.The sensitivity,specificity and accuracy of the combination of CEUS and CECT were 83.8%(57/68),55.6%(10/18),77.9%(67/86),respectively.The accuracy of the combination of CEUS and CECT was higher than that of CECT in the diagnosis of malignant gallbladder lesions [(53.9±10.00)s vs(35.50±6.72)s],the differences were statistically significant(t=6.729,P＜0.001).Conclusions The enhancement patterns of CEUS and CECT in benign and malignant gallbladder lesions are similar.The combination of CEUS and CECT is helpful for improving the diagnostic accuracy of malignant gallbladder lesions.CEUS and CECT could corroborate and complement each other,and provide more valuable information for the differential diagnosis of benign and malignant gallbladder lesions.