Objective:To investigate the relationship between obesity and chronic periodontitis.Methods:2 1 36 subjects (1 091 males and 1 045 females)were included.Body mass index(BMI)was calculated.Gingival index (GI),tooth pocket probing depth (PD)and attachment loss (AL)were measured at 6 ponint of each tooth according the quartation method.The correlation between obesity and the indexes of periodontitis was studied by Spearman analysis.Results:There was a significant positive correlation of BMI degree with chronic periodontitis;there was no correlation between BMI and GI,PD in men,but BMI was positively correlated with AL,BMI and GI in women.Conclusion:Progress of chronic periodontitis may be related to obesity,the relation is more significant in women.

Objective: To study the relationship between occurrence and development of chronic periodontitis and neuropeptide substance P (SP) in gingival crevicular fluid. Methods: There were 48 patients in experimental group and 42 patients in the control group. Gingival crevicular fluid samples were collected from the patients′ intraoral chronic periodontitis inflammatory positive sites and healthy sites. Neuropeptide substance P levels in gingival crevicular fluid from two groups were measured by radioimmunoassay. Gingival index, pocket depth, attachment loss, alveolar bone resorption were recorded and their correlations with SP were analyzed. Results: SP levels of the experimental group were significantly higher than those of the control group(P<0.01). There were significant differences(P<0.01)between SP level and periodontal clinical index in slight periodontitis and the control group. There were significant correlations(P<0.05)between GCF SP content and all PD, AL, ABL but GI in slight periodontitis, and there were significant correlations in between GCF SP content and GI for both moderate periodontitis and severe periodontitis. There were significant correlations(P<0.01) between GCF SP content and PD,AL,ABL for both moderate periodontitis and severe periodontitis. Conclusion:GCF SP level is closely related to occurrence and development of chronic periodontitis.GCF SP level can reflect the degree of the damage of periodontium.Determination of patients′ GCF SP level has important significance for the patients′ condition judgement and treatment guidance.

Objective To investigate the predictive value of IL-9 cytokines in the patients with acute respiratory distress syndrome (ARDS).Methods According to Berlin definition of ARDS published in 2012,data of 28 patients with ARDS and another 22 healthy subjects as control were collected for prospective study from June,2013 to July,2014.Of them,there were 23 patients with severe pneumonia,1 patient with acute mercury poisoning,2 patients with severe acute pancreatitis,2 patients with acute paraquat poisoning.The survivors of ARDS patients were followed up.The ARDS patients were divided into moderate group (n =18) and severe group (n =10) as per the severity of the disease diagnosed at the first day after admission.And the ARDS patients were also divided into non-survival group (n =15) and survival group (n =13) according to the ARDS patients survived for 28 days.Three mLs of peripheral venous blood were collected in the early morning from fasted ARDS patients on the first and the third day after diagnosis of ARDS confirmed,and those of healthy subjects were collected on the first day after admission.The IL-9 cytokine level of peripheral venous blood detected by using enzyme linked immunosorbent assay (ELISA).The comparisons of levels of IL-9 cytokine were carried out between ARDS group and control group on the first day after diagnosis of ARDS established,between moderate group and severe group on the first day and the third day,and between survival group and non-survival group.The receiver operating characteristic (ROC) curve was used to evaluate the performance of IL-9 as a prognostic indicator in the early stage of ARDS.Data were analyzed by using SPSS 19.0 software.Results On the first day after diagnosis of ARDS,there were no statistically significant differences in age,APACHE Ⅱ score,procalcitonin (PCT),C-reactive protein (CRP),white blood cell count,lactate,and albumin between survival group and non-survival group (P ＞ 0.05).PH value in non-survival group was significantly lower than that in survival group (P＜0.05).IL-9 cytokine level of peripheral venous serum in ARDS group was significantly higher than that in healthy control group (P ＜ 0.05).There were no statistically significant differences in IL-9 level of peripheral venous serum both between moderate group and severe group and between survival group and non-survival group (P ＞ 0.05).On the third day,IL-9 level in severe group was significantly higher than that in moderate group (P ＜ 0.05),and that in survival group was significantly lower than that in non-survival group (P ＜ 0.05).The ROC of IL-9 at the first day for predicting mortality had all area under curve (AUC) to be 0.579 (95％ CI 0.361-0.798,P ＞ 0.05).The ROC of IL-9 on the third day for predicting mortality had AUC of 0.769 (95％ CI 0.592-0.947,P ＜ 0.05).When the cut-off value of IL-9 for the death followed up for 28 day' s was 2.88 pg/mL,the sensitivity was 86.7％,and the specificity was 61.5％.Conclusions IL-9 levels of in patients with ARDS were significantly higher,and IL-9 level can be helpful for the assessment of ARDS severity in the early stage,and for prognosis as well.

Objective:To investigate the relationship between previous bleeding history and poor prognosis of patients with acute upper gastrointestinal bleeding.Methods:This study was a prospective multicentre real-world study (Acute Upper Gastrointestinal Real-word study, AUGUR study). The data of patients with UGIB who were admitted to the emergency department of 20 tertiary hospitals in China from June 30, 2020 to February 10, 2021 were collected. According to the number of previous bleeding history, the patients were divided into three groups (0 time, 1-3 times, and≥4 times). Based on the patient’s demographic data, clinical characteristics, laboratory data, treatment, and outcomes, univariate and logistic regression analysis were performed to investigate the correlation between the number of previous bleeding and the 90-day mortality and rebleeding of patients with gastrointestinal bleeding.Results:A total of 1 072 patients with acute UGIB were included in this study. The all-cause mortality and rebleeding rate of all patients were 10.9% (117/1 072) and 11.8% (129/1 072), respectively. Among them, 712 patients (66.42%) had no previous bleeding, 297 patients (27.71%) had previous bleeding 1-3 times, and 63 patients (5.88%) had previous bleeding≥4 times. In univariate analysis, age, vital signs and consciousness on admission, history of liver cirrhosis, onset with hematemesis, admission hemoglobin, varicose veins bleeding, peptic ulcer bleeding, red blood cell infusion, tracheal intubation and the use of vasopressors after admission were risk factors for the 90-day mortality and rebleeding rate. Multivariate logistic regression analysis showed that patients with previous bleeding≥4 times had a higher risk of the 90-day mortality ( OR=2.17, 95% CI: 1.04-4.57, P=0.040) and rebleeding ( OR=2.32, 95% CI: 1.19-4.53, P=0.013). Conclusions:The history of previous bleeding≥ 4 times can be used as an independent risk factor for the 90-day mortality and rebleeding in patients with acute UGIB.

Objective:To evaluate the value of mechanical ventilation combined with ultrasound in evaluating the volume reactivity of patients with septic shock.Methods:A prospective study was performed, and 59 patients with septic shock who were admitted to the Emergency Intensive Care Unit of the First Affiliated Hospital of Xinjiang Medical University from October 2016 to February 2018 were included according to the established inclusion and exclusion criteria. First, end-expiratory block test (EEO) and end-inhalation block test (EIO) were performed, followed by volume expansion test (VE) (intravenous infusion of 250 mL saline for 10 min), with cardiac index (CI) change value after VE (ΔCI)≥15% for volume-responsive group (37 cases), ΔCI<15% for volume-free group (22 cases), Vigileo-FloTrac system was used to continuously monitor EEO, EIO, and VE before and after changes in hemodynamic parameters, such as central venous pressure (CVP), mean arterial pressure (MAP), stroke volume variation (SVV), CI, and improved inferior vena cava diameter (IVCD) and respiratory variability index (RVI). The values of predicted capacity reactivity such as changes in CVP, MAP, SVV, CI, and RVI before and after EIO were evaluated, and the relationship between EEO, EIO, and capacity reactivity was analyzed by ROC curve.Results:There was no significant difference between MAP and CI in the response group and non-response group after EEO, EIO and VE intervention ( P>0.05). EEO-ΔSVV, EEO-ΔRVI, EEO-ΔCVP, EIO-ΔSVV and EIO-ΔRVI were compared between the reaction group and the non-reaction group, and the difference was statistically significant ( P<0.05); In the correlation analysis, EEO-ΔRVI and EIO-ΔRVI were correlated with VE-ΔRVI ( r=0.695, P<0.01; r=-0.489, P<0.01); EEO-ΔCVP and VE-ΔCVP were correlated ( r=0.566, P<0.01); EEO-ΔSVV, EIO-ΔSVV are related to VE-ΔSVV ( r=0.842, P<0.01; r= -0.727, P<0.01), and the ROC curve showed ( AUCEEO-ΔSVV=0.890, 95% CI: 0.792-0.988), showed AUCEEO-ΔSVV> AUCEEO-ΔRVI> AUCEIO-ΔSVV> AUCEIO-ΔRVI> AUCEEO-ΔCVP. Conclusions:EEO and EIO combined with ultrasound have certain clinical value in the evaluation of volume responsiveness in patients with septic shock, and the evaluation value of SVV and RVI is superior to CVP, MAP, and CI.

[Abstract] Objective: To investigate the influence of glutathione S-transferase P-1 (GSTP1) genetic variation on the recurrence risk and prognosis of colorectal cancer (CRC) patients received postoperative adjuvant chemotherapy. Methods: The clinical data of 195 CRC patients, who received postoperative adjuvant chemotherapy in the Department of Gastroenterology of the FirstAffiliated Hospital of Zhengzhou University from January 2010 to December 2018, were collected for this study. 5-fluorouracil (5-FU) based adjuvant chemotherapy was given after surgical resection. The recurrence status of the patients was assessed during hospitalization period, and the long-term survival data of patients were obtained by telephone follow-up after finishing the scheduled adjuvant chemotherapy. GSTP1 genotyping was performed with the DNA extracted from peripheral blood specimens, and its correlation with patients’clinical characteristics wasanalyzed.Additionally, RNAwasextractedfrom peripheral blood mononuclear cell (PBMC) specimens of some CRC patients that prior to chemotherapy for GSTP1 mRNA expression analysis. The univariate analysis of genotypes and prognosis was carried out by Kaplan-Meier survival analysis, and adjusted by multivariate Cox regression model. Results: The median disease-free survival (DFS) of the 195 CRC patients was 4.8 years, and the median overall survival (OS) was 6.2 years. Polymorphism analysis indicated that the I105VlocusofGSTP-1coding region was correlated with prognosis. The prevalence of I105V in the study population: AA genotype of 135 cases (69.23%), AG genotype of 56 cases (28.72%) and GG genotype of 4 cases (2.05%), the minor allele frequency of I105V was 0.16. The genotype distribution was in accordance with Hardy-Weinberg equilibrium (P>0.05). The analysis of recurrence risk and prognosis found that the median DFS of patients with AA genotype and AG/GG genotype was 5.7 and 3.9 years respectively (P<0.01), while the median OS of two groups of patients was 7.0 and 4.5 years respectively (P<0.01). The multivariate Cox regression results indicated that AG/GG genotype was an independent factor for OS (OR=1.54, P<0.05). The mRNA expression of GSTP1 in PBMC of the patients with AG/GG genotypes were significantly higher than those patients with AA genotype (P<0.01). Conclusion: GSTP1 I105V genetic variation influences the recurrence risk and prognosis of CRC patients received postoperative adjuvant chemotherapy possibly via mediating the mRNAexpression of GSTP1.

[Abstract] Objective: To investigate the efficacy and safety of apatinib monotherapy in the treatment for patients with advanced colorectal cancer (CRC) who failed standard regimen. Methods: The required sample size in this prospective study was calculated with the PASS 15 software. A total of 52 patients with advanced colorectal cancer who failed standard regimen from July 2017 to August 2018 were included in this study. The patients were given apatinib monotherapy with an initial dosage of 750 mg or 500 mg. The objective remission rate (ORR) and disease control rate (DCR) were evaluated; the patients were followed up and progression-free survival (PFS) and overall survival (OS) were evaluated, and adverse events during treatment were recorded. The primary endpoint of this study was PFS, and secondary endpoints were ORR, DCR, OS and safety. Result: Of the 52 patients included, 45 patients, all of whom were late stage CRC patients with at least two systematic chemotherapeutic treatments, were available for efficacy evaluation. Treatment efficacy evaluation showed complete response of 0 case, partial response of 5 cases, stable disease of 30 cases and progression disease of 10 cases; the ORR was 11.11%, and the DCR was 77.78%. The prognosis data indicated that the median PFS of the 45 CRC patients was 3.95 months (95% CI=3.16-4.74), and the median OS was 10.3 months (95% CI=5.70-14.90). In terms of adverse events evaluation, the adverse reactions with grade 3 or above were hand-foot syndrome (6 cases, 13.33%), hypertension (5 cases, 11.11%), proteinuria (3 cases, 6.67%), diarrhea (3 cases, 6.67%), fatigue (2 cases, 4.44%) and bleeding (1 case, 2.22%). Conclusion: Apatinib monotherapy for patients with advanced colorectal cancer, who failed the standard regimens, has potential clinical benefits, and the overall toxicity profile is manageable.

Gene expression labeling and conditional manipulation of gene function are important for elaborate dissection of gene function. However, contemporary generation of pairwise dual-function knockin alleles to achieve both conditional and geno-tagging effects with a single donor has not been reported. Here we first developed a strategy based on a flipping donor named FoRe to generate conditional knockout alleles coupled with fluorescent allele-labeling through NHEJ-mediated unidirectional targeted insertion in zebrafish facilitated by the CRISPR/Cas system. We demonstrated the feasibility of this strategy at sox10 and isl1 loci, and successfully achieved Cre-induced conditional knockout of target gene function and simultaneous switch of the fluorescent reporter, allowing generation of genetic mosaics for lineage tracing. We then improved the donor design enabling efficient one-step bidirectional knockin to generate paired positive and negative conditional alleles, both tagged with two different fluorescent reporters. By introducing Cre recombinase, these alleles could be used to achieve both conditional knockout and conditional gene restoration in parallel; furthermore, differential fluorescent labeling of the positive and negative alleles enables simple, early and efficient real-time discrimination of individual live embryos bearing different genotypes prior to the emergence of morphologically visible phenotypes. We named our improved donor as Bi-FoRe and demonstrated its feasibility at the sox10 locus. Furthermore, we eliminated the undesirable bacterial backbone in the donor using minicircle DNA technology. Our system could easily be expanded for other applications or to other organisms, and coupling fluorescent labeling of gene expression and conditional manipulation of gene function will provide unique opportunities to fully reveal the power of emerging single-cell sequencing technologies.
Alleles ; Animals ; CRISPR-Cas Systems ; DNA End-Joining Repair ; DNA, Circular/metabolism* ; Embryo, Nonmammalian ; Gene Editing/methods* ; Gene Knock-In Techniques ; Gene Knockout Techniques ; Genes, Reporter ; Genetic Loci ; Genotyping Techniques ; Green Fluorescent Proteins/metabolism* ; Integrases/metabolism* ; Luminescent Proteins/metabolism* ; Mutagenesis, Insertional ; Single-Cell Analysis ; Zebrafish/metabolism*