[摘 要] 目的：探究错配修复蛋白2（MSH2）在胃癌中表达和其与患者临床特征的关系及其对胃癌细胞恶性生物学行为的作用及机制。方法：收集2020年5月至2022年7月期间在邢台市人民医院收治的40例胃癌患者的癌组织和配对癌旁组织及患者的一般临床资料。常规培养正常人胃黏膜上皮细胞GES-1和胃癌细胞AGS、MKN45和BGC-823，用转染试剂分别将sh-NC、shMSH2-1和shMSH2-2慢病毒载体转染至AGS和MKN45细胞中，实验分为sh-NC、shMSH2-1和shMSH2-2组。CCK-8法、克隆形成实验、EdU染色、Transwell小室实验分别检测各组AGS和MKN45细胞的增殖、迁移和侵袭能力。构建裸鼠MKN45细胞移植瘤模型，观察敲减MSH2对移植瘤生长的影响。WB法检测各组细胞中及移植瘤组织中 MSH2、PI3K/AKT/mTOR通路、上皮间质转化相关蛋白的表达。结果：MSH2在胃癌组织和细胞中呈高表达且与淋巴结转移、T分期进展及组织学分化不良均有关联（均P < 0.001）；在AGS和MKN45细胞中成功地敲减了MSH2的表达（P < 0.001）；敲减 MSH2均能显著抑制AGS和MKN45细胞的活力、EdU染色阳性率、克隆形成能力、迁移及侵袭能力和移植瘤的生长（均P < 0.001）；均能显著抑制AGS和MKN45细胞和MKN45移植瘤组织中MSH2蛋白、PI3K/AKT/mTOR通路相关蛋白、N-cadherin蛋白的表达（均P < 0.001），促进E-cadherin蛋白的表达（P < 0.001）。结论：MSH2在胃癌组织和细胞中呈高表达且与淋巴结转移、T分期进展及组织学分化不良有关联，敲减MSH2表达通过抑制PI3K/AKT/mTOR通路调控AGS和MKN45细胞的恶性生物学行为，MSH2可能是胃癌治疗的潜在靶点。

OBJECTIVE: To investigate the differences between high-frequency ultrasound-guided manual detorsion combined with surgery (MD+S) and surgery alone in the treatment of testicular torsion, and to provide some new evidence for the timely diagnosis and treatment of the disease. METHODS: We retrospectively analyzed the clinical data on 134 cases of unilateral testicular torsion within 48 hours treated in our hospital by MD+S or by surgery alone from January 2015 to May 2022. We statistically analyzed the age distribution, and duration and degrees of testicular torsion, followed by comparison between the two groups. RESULTS: In the 134 cases, the median age of onset was 15 (13－19) years old, the median onset-to-visit time was 15 (8－25) hours, and the median degree of torsion was 360° (180°－1080°). Of the total number of patients, 21 underwent testicular excision and the other 113 were treated with the testis preserved, with no statistically significant difference in age distribution between the two groups (P>0.05), and a higher rate of testis resection in those with longer duration and greater angle of torsion (P<0.05). Totally, 33 of the patients were assigned to the MD+S group and 101 to the surgery alone group. According to the actual clinical conditions and excluding those with torsion time longer than 24 hours and torsion angle greater than 720 °, 28 of the patients underwent ultrasound-guided MD+S (with 1 case of testis resection, 3.6%), and 68 received surgery alone (with 7 cases of testis resection, 10.3%). The rate of testis resection was higher in the surgery alone than that in the MD+S group, but with no statistically significant difference between the two groups (P>0.05), which was considered to be related to the small sample size in this study. CONCLUSION The popularization of testicular torsion knowledge can shorten the onset-to-visit time, and reasonable manual detorsion before emergency surgery can reduce the rate of testis resection.
Humans ; Male ; Spermatic Cord Torsion/therapy* ; Retrospective Studies ; Adolescent ; Young Adult ; Ultrasonography ; Testis/surgery* ; Adult

OBJECTIVE To investigate the protective effect and mechanism of quercetin on the cardiac and renal functions of rats with cardiorenal syndrome （CRS） based on the phosphoinositide 3-kinase （PI3K）/protein kinase B （Akt）/nuclear factor kappa- B （NF-κB） signaling pathway. METHODS CRS model of SD rats was induced by left anterior descending coronary artery ligation combined with acute renal ischemia-reperfusion. Model rats were randomly separated into model group， quercetin low-dose group （35 mg/kg）， quercetin high-dose group （70 mg/kg）， high-dose of quercetin+740Y-P group （70 mg/kg quercetin+3.5 mg/kg PI3K/Akt/ NF-κB signaling pathway activator 740Y-P）， with 12 rats in each group. Another 12 normal rats were selected as sham operation group. They were given relevant drugs， once a day， for 14 consecutive days. After administration， the cardiac function indexes [left ventricular ejection fraction （LVEF）， end-diastolic volume （EDV）， isovolumic relaxation time （IVRT）] and renal function indicators [blood urea nitrogen （BUN）， 24-hour urine protein， and serum creatinine （Scr）] were detected， and fibrosis in the cardiac and renal tissues was observed； the levels of inflammatory indexes [interleukin-1β （IL-1β） and tumor necrosis factor-α （TNF-α）] in the serum and cardiac and renal tissues as well as the expression of PI3K/Akt/NF-κB pathway-related proteins in the cardiac and renal tissues were detected. RESULTS Compared with sham operation group， the levels of BUN， 24-hour urine protein and Scr， collagen volume fraction of cardiac and renal tissues， the levels of IL-1β and TNF-α in serum and cardiac and renal tissues， and the phosphorylation of PI3K， Akt and NF-κB p65 protein in cardiac and renal tissues were increased significantly in model group （P＜0.05）； the levels of LVEF， IVRT and EDV were reduced significantly （P＜0.05）. Compared with the model group， the above indexes were reversed significantly in quercetin low-dose and high-dose groups （P＜0.05）， and the reversal effect was better in the high-dose group （P＜0.05）. 740Y-P restored the reverse effect of high-dose quercetin on the indexes （P＜0.05）. CONCLUSIONS Quercetin can alleviate cardiac and renal fibrosis and function injury， the mechanism of which may be 20232016） associated with inhibiting the activation of the PI3K/Akt/NF-κB signaling pathway.

【Objective】 To comprehensively explore the serological characteristics of anti-PP1P^k and potential therapeutic strategies for recurrent miscarriage in p-blood type pregnant women. 【Methods】 Neutralization with pigeon egg white and human plasma, disruption of IgM antibodies by 2-mercaptoethanol reagent, and complement adding were conducted. Anti-PP1P^k titers under different processing conditions, media and temperatures were determined, and neutralizing effect of human plasma on anti-PP1P^k and its sensitization complement ability were analyzed. 【Results】 The titers of anti-PP1P^k in saline and column agglutination were 4 and 8, respectively. Low temperature increased titers, while β-mercaptoethanol treatment significantly reduced them. Pigeon egg white partially neutralized anti-PP1P^k antibodies. Human plasma was also capable of reducing anti-PP1P^k titers with neutralization capability surpassing that of pigeon egg white, and there were individual differences in neutralization capability. 【Conclusion】 The anti-PP1P^k was a blend of antibodies encompassing both IgM and IgG types, exhibiting cold reactivity, and having the potential for complement activation. Human plasma emerges as an effective modulator for diminishing the efficacy of anti-PP1P^k. Plasma transfusion holds promise as a therapeutic avenue for addressing recurrent miscarriages in pregnant individuals with the p phenotype.

OBJECTIVE: To construct a risk prediction model for elderly severe patients with pneumonia infection, and analyze the prevention effect of 1M3S nursing plan under early warning mode. METHODS: Firstly, 180 elderly severe patients admitted to the department of intensive care unit (ICU) of the Second Affiliated Hospital of Xingtai Medical College from September 2020 to September 2021 were enrolled. Their clinical data were collected and retrospectively analyzed, and they were divided into infected group and non-infected group according to whether they developed severe pneumonia. The risk factors affecting severe pneumonia in elderly severe patients were screened by univariate and multifactorial analysis methods, and the risk prediction model was constructed. The predictive efficiency of the model was analyzed by receiver operator characteristic curve (ROC curve). Then the risk prediction model was applied to prospectively include 60 high-risk elderly patients with severe pneumonia admitted from December 2021 to August 2022. The patients were randomly divided into study group and control group by envelope method, with 30 cases in each group. Both groups were given routine nursing. On this basis, the study group adopted 1M3S nursing scheme [standardized nursing management (1M), improving nursing skills (S1), optimizing nursing service (S2), ensuring nursing safety (S3)] in the early warning mode for intervention. Acute physiology and chronic health evaluation II (APACHE II) and Murray lung injury score were compared between the two groups before intervention and 7 days after intervention. RESULTS: Among 180 elderly severe patients, 34 cases were infected with pneumonia (18.89%). The proportion of patients with Glasgow coma scale (GCS) ≤ 8, duration of mechanical ventilation > 7 days, use of antibiotics, poor oral hygiene, hospital stay > 15 days and albumin ≤ 30 g/L in the infected group were significantly higher than those in the non-infected group. Multivariate Logistic regression analysis showed that duration of mechanical ventilation > 7 days, use of antibiotics, GCS score≤ 8, hospital stay > 15 days, albumin ≤ 30 g/L and poor oral hygiene were all independent risk factors for severe pneumonia in elderly severe patients. The odds ratio (OR) values were 3.180, 3.394, 1.108, 1.881, 1.517 and 2.512 (all P < 0.05). ROC curve analysis showed that the area under the ROC curve (AUC) of the prediction model to predict severe pneumonia in elderly severe patients was 0.838, 95% confidence interval was 0.748-0.927, sensitivity and specificity were 81.25% and 72.57%, respectively, and the Youden index was 0.538. (2) There was no significantly difference in general data between the study group and the control group, which was comparable. After intervention, the APACHE II score and Murray lung injury score of the two groups were significantly decreased, and the APACHE II score and Murray lung injury score of the study group were significantly lower than those of the control group (APACHE II score: 3.15±1.02 vs. 3.81±0.25, Murray lung injury score: 5.01±1.12 vs. 6.55±0.21, both P < 0.01). CONCLUSIONS There are many risk factors affecting the development of severe pneumonia in elderly severe patients. The risk prediction model based on duration of mechanical ventilation > 7 days, hospital stay > 15 days, GCS score≤ 8, albumin ≤ 30 g/L, poor oral hygiene and history of combined antibacterial use has high predictive efficacy. The intervention of 1M3S nursing scheme in the early warning mode can effectively reduce the risk of severe pneumonia in elderly severe patients, and significantly improve the pathophysiological status.
Humans ; Pneumonia/diagnosis* ; Aged ; Risk Factors ; Retrospective Studies ; Intensive Care Units ; Female ; Male ; ROC Curve ; Risk Assessment/methods*

【Objective】 To evaluate and analyze the impact of COVID-19 epidemic on inventory of red blood cells (RBCs)in local and municipal blood stations in China, and to provide reference for the management of public health emergencies. 【Methods】 Relevant data from 2018 to 2021 were collected, and the differences in the volume of qualified RBCs, the usage efficiency of inventory RBCs, the average daily distribution of RBCs,the blood distribution rate of RBCs prepared by 400 mL whole blood, the difference in the average storage days of RBCs at the time of distribution, the average daily inventory of RBCs and the time of the average daily inventory of RBCs to maintain the distribution in 24 local and municipal blood stations in China during the COVID-19 epidemic and non-epidemic periods were retrospectively analyzed. 【Results】 Compared with non-epidemic periods, the volume of qualified RBCs [(117 525.979 ±52 203.175)U] and the average daily distribution of RBCs [( 156. 468 ± 70. 186) U ] increased significantly, but the usage efficiency of inventory RBCs decreased(97.24%±0.51%) significantly (P<0.05).There was no significant difference in the blood distribution rate of RBCs prepared by 400 mL whole blood(73.88%±20.30%), the average storage days of RBCs distribution(13.040 ±3.486), the average daily stock quantity of RBCs[(2 280.542 ±1 446.538) U ] and the time of the average daily inventory of RBCs to maintain the distribution[(15.062 ±7.453) d] (P>0.5). 【Conclusion】 During the COVID-19 epidemic, the inventory management of RBCs operated well, the overall inventory remained relatively stable, the stock composition and storage period showed no significant change.

【Objective】 To analyze the basic characteristics of whole blood donors from blood stations before and after the outbreak of COVID-19. 【Methods】 After excluding invalid data, data related to the basic characteristics of whole blood donors collected from 26 blood stations in China during 2018 to 2021 were statistically analyzed, including the trend of total whole blood donors, the number of repeated blood donors, the frequency of blood donation, the average age of donors and the recruitment of first-time blood donors. 【Results】 Affected by the epidemic, 8 out of 14 indicators were with large variations, accounting for 57%. The overall growth rate of total whole blood donors during the epidemic was higher than before the epidemic (P<0.05).The number of repeated blood donors has shown an increased trend, with a higher number during the epidemic than before (P<0.05). The frequency of blood donation was lower during the epidemic than before(P<0.05).Average ages of blood donors and female blood donors fluctuated widely during the epidemic, both higher than those before the epidemic(P<0.05).The donation rate of first-time blood donors <25 years old and ≥25 years old varied widely and irregularly during the epidemic (both P<0.05). The percentage of first-time blood donors fluctuated irregularly during the epidemic, with overall percentage lower than that before the epidemic(P<0.05). 【Conclusion】 Whole blood donors from 26 blood stations increased after the outbreak of COVID-19, and some indicators in certain areas showed significant fluctuations during the epidemic.

【Objective】 To conduct the laboratory quality assessment between 12 blood stations in Hebei province, analyze the results and explore the accuracy and comparability of testing, so as to improve the level of testing ability and quality management. 【Methods】 With reference to the external quality assessment rules of National Center for Clinical Laboratories and combined with the instructions of quality assessment samples, daily testing process of the laboratories were assessed. The quality indicators include blood cell count (WBC, RBC, Hb, HCT, MCV, MCH, MCHC and PLT), biochemical items (TP) and coagulation parameters (FIB and FⅧ). 【Results】 There are still problems in laboratories in terms of personnel operation, instrument maintenance and the impact of different reagent batches, especially in biochemical items and coagulation parameters. The pass rate of biochemical items was the lowest, only 72.75%, and that of blood cell count was the highest, reaching 98.75%. 【Conclusion】 With the progress of the project, the quality monitoring level of daily blood sampling tests in the quality control laboratory of each blood station has been improved. However, it is still necessary for each laboratory to improve the testing ability and quality management to a higher level in Hebei.

【Objective】 To analyze the hepatitis B virus (HBV) infection data of blood donors from 18 domestic blood stations, so as to investigate the HBV infection situation of blood donors. 【Methods】 The positive rate of HBV and its distribution characteristics of regions, the percentage of HBsAg+ ELISA in first-time vs repeated blood donors, and the percentage of HBsAg-/HBV DNA+ blood donors of 18 domestic blood stations during 2017 to 2020 were collected from the Working Platform for Practice Comparison of Blood Centers, and the HBV infection among blood donors were statistically analyzed. 【Results】 From 2017 to 2020, the positive rate of HBV in blood donors among 18 domestic blood stations was 13.48/10 000-144.02/10 000, with the average HBV positive rate in eastern, central and western region at 26.14/10 000, 51.98/10 000 and 41.00/10 000, respectively. The HBsAg+ rate by ELISA among first-time and repeated blood donors was 14.55/10 000-305.39/10 000 vs 1.04/10 000-87.43/10 000 The HBsAg-/HBV DNA+ yield was 1.80/10 000-35.31/10 000. 【Conclusion】 The distribution of HBV infection in blood donors has regional characteristics, and HBV prevalence was low in repeated blood donors. HBsAg ELISA combined with HBV DNA detection can better ensure blood safety.