Objective To analyze the epidemiological characteristics and risk factors of chronic kidney disease in patients with 10 years of hypertension. Methods A total of 350 patients with 10 years or longer course of hypertension who underwent physical examination in the Second Affiliated Hospital of Air Force Medical University from June 2021 to June 2024 were selected. General information of the patients was collected through questionnaires. Renal function related indicators and imaging results were obtained through relevant laboratory tests and imaging examinations. Based on the results of renal function related indicators, the epidemiological characteristics of chronic kidney disease in hypertensive patients with 10 years of hypertension, as well as risk factors for chronic kidney disease in the hypertensive patients were identified. Results Among the 350 patients enrolled in this study, there were 71 (20.29%) with proteinuria, 32 (9.14%) with hematuria, and 40 (11.43%) with decreased renal function. A total of 80 (22.86%) cases with structural variations such as kidney stones and cysts were detected by renal B-mode ultrasound. There were 121 (34.57%) patients with hypertension and chronic kidney disease. There were statistically significant differences in gender, age, diabetes, hyperlipidemia and hyperuricemia between patients with chronic kidney disease and those without (P<0.05). Multivariate logistic regression analysis results showed that gender, age, diabetes, hyperlipidemia, and hyperuricemia were the risk factors for chronic kidney disease in patients with hypertension (P<0.05). Conclusion Patients with 10 years of hypertension have a high risk of chronic kidney disease, and the risk factors include gender, age, diabetes, hyperuricemia, and hyperlipidemia.

With the extensive applications of nuclear energy in the military, scientific research, and medical fields, radiological medicine has developed into a significant discipline. So far, studies of radiology have been conducted mostly using cell and animal models, both of which have limitations. Organoids, as 3D in vitro culture systems derived from tissue stem cells, have filled the gap left by these conventional models. They have been widely applied in review, disease research, drug development, and cancer modeling since their structures, functions, and genetic characteristics are akin to those of primary tissues. This review presents the applications of organoid models of various organ types in radiotherapy, as well as the limitations and prospects of organoids.

Objective:To design a multi-epitope antigen of norovirus(NoV)based on bioinformatics technology and to pre-pare and characterize it.Methods:Bioinformatics methods were used to construct and analyze the NoV multi-epitope antigen NoV-ZH.Recombinant proteins were prepared and characterized by prokaryotic expression system,and monoclonal antibodies were prepared by animal immunization and hybridoma technology,and initially applied in colloidal gold platform.Results:The designed multi-epitope antigen had a large proportion of random curls in the secondary structure,with theoretical molecular mass and isoelectric point(PI)of 13.1 ku and 7.16,which were stable and hydrophilic.It had good immunogenicity and could activate humoral and cellular immune re-sponses.The proteins prepared by ligating pET-28a(+)and pET-32a vectors with antigenic sequences were expressed as inclusion body proteins and soluble proteins,respectively.A pair of paired antibodies was obtained by animal immunization and hybridoma tech-nique,and applied to colloidal gold test strips with a sensitivity of 0.5 ng/ml,and the test strips could specifically bind two genotypes of NoV recombinant capsid proteins.Conclusion:The successful preparation and characterization of multi-epitope antigen of norovirus provides a reference for the subsequent exploration of NoV universal detection targets and the development of diagnostic raw materials.

Objective:To evaluate the optimization efficacy of anterior quadratus lumborum block at supra-arcuate ligament (SA-AQLB) combined with general anesthesia for laparoscopic gynecological surgery.Methods:Eighty American Society of Anesthesiologists physical status Ⅰ or Ⅱ patients, aged 28-64 yr, weighing 52-78 kg, with height of 154-166 cm, scheduled for elective laparoscopic gynecological surgery, were divided into general anesthesia group (group G, n=40) and SA-AQLB combined with general anesthesia group (group SG, n=40) using a random number table method.In group SG, bilateral SA-AQLB was performed under ultrasound guidance before anesthesia induction, and 0.4% ropivacaine 25 ml plus dexamethasone 5 mg was injected into both sides.Combined intravenous-inhalational anesthesia was applied in both groups.Patient-controlled intravenous analgesia (PCIA) with sufentanil 2 μg/kg (in 150 ml of normal saline) was performed after surgery.The PCIA pump was set up to deliver a 2 ml bolus dose with a 15-min lockout interval and background infusion at 2 ml/h.Visual analogue scale (VAS) scores for abdomen, pelvis and shoulder pain were recorded at 1, 6, 12, 24 and 48 h after operation.Flurbiprofen was used for rescue analgesia when VAS score >4.The occurrence of intraoperative cardiovascular events and amount of sufentanil used during operation were recorded.The time to first pressing the analgesia pump, effective pressing times of PCA, requirement for rescue analgesia and consumption of sufentanil after operation were recorded.The extubation time, time to first flatus after operation, first ambulation time, length of hospital stay and development of postoperative adverse reactions such as nausea and vomiting, urinary retention and respiratory depression within 48 h after operation were recorded. Results:Compared with group G, the incidence of intraoperative hypertension and tachycardia was significantly decreased, the incidence of intraoperative hypotension and bradycardia was increased, the intraoperative consumption of sufentanil was reduced, the extubation time was shortened, the time to first pressing the analgesia pump was prolonged, the effective pressing times of PCA, requirement for rescue analgesia and postoperative consumption of sufentanil were reduced, the time to first flatus, first ambulation time and length of hospital stay were shortened, VAS scores for abdomen, pelvis and shoulder pain were decreased at each time point after operation, and the incidence of nausea and vomiting, urinary retention and respiratory depression after operation was decreased in group SG ( P<0.01). Conclusions:Compared with general anesthesia, the combination of SA-AQLB and general anesthesia can reduce the opioid consumption, inhibit intraoperative stress responses and postoperative hyperalgesia and promote early postoperative recovery when used for the patients undergoing laparoscopic gynecological surgery.

Objective:To explore the effects and dose-response relationship of Tai Chi for type 2 diabetes mellitus(T2DM)and to evaluate the methodological quality of the included trials and evidence quality of the outcomes.Methods:Nine major English and Chinese databases were searched for randomized controlled trials of Tai Chi for T2DM from inception to December 2021.The effects and dose-response relationships were assessed with a meta-analysis and meta-regression using Stata.16.The methodological quality of the included studies was assessed using the risk of bias tool.The evidence quality of the outcomes was assessed using the GRADE tool.Results:A total of 24 studies with 1314 patients were included.Compared with the usual care,Tai Chi improved HbA1c(MD=-0.80％,95％Cl[-1.05,-0.54],P＜.001,I2=18.29％,very low-quality evidence),FBG(SMD=-0.58,95％Cl[-0.86,-0.31],P＜.001,I2=53.2％,low-quality evidence),fasting insulin(FIN),diastolic blood pressure,BMI,and the outcomes of quality of life(QoL)in patients with T2DM.However,when Tai Chi was compared with other exercise,there was no between-group difference in the HbA1c,FBG,TC,TG,HDL,LDL,BMI,and waist circumference(WC).Furthermore,the findings showed that an increase at every 18 weeks in length or an 823-h increase in the total time of Tai Chi intervention resulted in approximately a one unit reduction in the SMD of FBG.Conclusion:Compared with usual care,Tai Chi may improve HbA1c(with clinical significance),FBG,FIN,BMI,diastolic blood pressure,and outcomes of QoL in T2DM patients.The effects of Tai Chi were similar to those of other exercises on the HbA1c,FBG,TC,TG,HDL,LDL,BMI,and WC.Given the overall poor methodological quality and evidence quality,these findings should be treated cautiously.

Objective:To investigate the prevalence of thyroid nodules among students aged 8 - 17 years in Jintan District, Changzhou City, Jiangsu Province, and to explore the risk factors of thyroid nodules among underage students.Methods:In September 2018, two primary and middle schools, one ordinary high school and one vocational high school in Jintan District were selected as the survey sites. Students aged 8 - 17 years were selected as the survey subjects, and questionnaire survey, physical examination and thyroid ultrasound examination were conducted. At the same time, drinking water samples from schools and towns were collected to test water iodine, and urine samples from students and family salt samples were collected to test urinary iodine and salt iodine. Multivariate logistic regression was used to analyze related factors that may affect the occurrence of thyroid nodules.Results:A total of 725 students were surveyed, including 359 (49.5%) boys and 366 (50.5%) girls. Two water samples were collected from each of the four schools, and the mean values of water iodine were 0.3, 8.5, 0.2 and 0.2 μg/L, respectively; two water samples were collected from each of the towns where the four schools were located, and the mean values of water iodine were 6.8, 8.1, 4.8 and 3.7 μg/L, respectively. A total of 725 urine samples were collected, and the median urinary iodine was 209.92 μg/L, ranging from 8.60 to 932.00 μg/L. A total of 725 edible salt samples were collected from students' families, and the salt iodine content was (23.75 ± 7.10) mg/kg, ranging from 0.00 to 60.30 mg/kg, and 95.0% (689/725) of students' families ate iodized salt. A total of 725 students were examined for thyroid gland, and 22 were diagnosed with goiter, with an enlargement rate of 3.0%; and 155 were diagnosed with thyroid nodules, with a detection rate of 21.4%. The detection rates of thyroid nodules in boys and girls were 20.9% (75/359) and 21.9% (80/366), respectively; the detection rates of thyroid nodules in students who participated and did not participate in extracurricular tuition/interest classes in the past month were 28.2% (71/252) and 17.8% (84/473), respectively. The results of multivariate logistic regression analysis showed that girls and participating in extracurricular tuition/interest classes in the past month were independent risk factors for the occurrence of thyroid nodules [odds ratio ( OR) = 2.057, 2.538, 95% confidence interval ( CI): 1.226 - 3.451, 1.532 - 4.204, P < 0.05). Conclusions:The detection rate of thyroid nodules in students aged 8 - 17 years in Jintan District is at a high level. Girls and participating in extracurricular tuition/interest classes in the past month are independent risk factors for the occurrence of thyroid nodules.

Different fragments of SARS-CoV-2 nucleocapsid (N) protein were expressed and purified, and a fluorescence immunochromatography method for detection of SARS-CoV-2 total antibody was established. The effect of different protein fragments on the performance of the method was evaluated. The N protein sequence was analyzed by bioinformatics technology, expressed in prokaryotic cell and purified by metal ion affinity chromatography column. Different N protein fragments were prepared for comparison. EDC reaction was used to label fluorescence microsphere on the synthesized antigen to construct sandwich fluorescence chromatography antibody detection assay, and the performance was systemically evaluated. Among the 4 prepared N protein fragments, the full-length N protein (N419) was selected as the optimized coating antigen, N412 with 0.5 mol/L NaCl was used as the optimal combination; deleting 91-120 amino acids from the N-terminal of N412 reduced non-specific signal by 87.5%. the linear range of detection was 0.312-80 U/L, the limit of detection was 0.165 U/L, and the accuracy was more than 95%. A fluorescence immunochromatographic detection method for analysis of SARS-CoV-2 total antibody was established by pairing N protein fragments. The detection result achieved 98% concordance with the commercially available Guangzhou Wanfu test strip, which is expected to be used as a supplementary approach for detection of SARS-CoV-2. The assay could also provide experimental reference for improving the performance of COVID-19 antibody detection reagents.
Antibodies, Viral ; COVID-19 ; Chromatography, Affinity ; Fluorescent Antibody Technique ; Humans ; Microspheres ; SARS-CoV-2 ; Sensitivity and Specificity

Objective To evaluate the role of nuclear factor erythroid 2-related factor 2 ( Nrf2)∕heme oxygenase-1 ( HO-1) signaling pathway in bone marrow mesenchymal stem cells ( MSCs)-induced re-duction of endotoxin-induced acute lung injury ( ALI) in rats. Methods Thirty-two clean-grade healthy male Sprague-Dawley rats, weighing 180-250 g, were divided into 4 groups ( n=8 each) using a random number table method:control group (group C), ALI group, MSCs group and brusatol plus MSCs group ( group B+MSCs) . Lipopolysaccharide 20 mg∕kg was intravenously infused to establish the model of acute lung injury. Phosphate buffered saline ( PBS) 1 ml was intravenously infused at 1 h after establishing the model in group ALI. The equal volume of sterile saline and PBS was given instead in group C. PBS (1 ml) containing MSCs 1×106 cells was intravenously infused at 1 h after establishing the model in group MSCs. Nrf2 inhibitor brusatol 0. 4 mg∕kg was intraperitoneally injected every other day during 10 days before estab-lishing the model, and MSCs were given at 1 h after establishing the model in group B+MSCs. Bronchoalve-olar lavage fluid ( BALF) was collected and lung tissues were removed at 6 h after establishing the model. The protein concentration and neutrophil count in BALF were determined, and the wet∕dry weight ratio ( W∕D ratio) was calculated. The pathological changes of lung tissues were observed by hematoxylin-eosin staining. The expression of Nrf2 and HO-1 (by Western blot), activities of myeloperoxidase (MPO) and superoxide dismutase ( SOD) and content of malondialdehyde ( MDA) were determined. Results Com-pared with group C, the W∕D ratio and total cell count and protein concentration in BALF were significantly increased, the MPO activity was enhanced, the MDA content was increased, the SOD activity was weak-ened, and the expression of Nrf2 was up-regulated (P<0. 05), and the pathological changes were accentu-ated in group ALI. Compared with group ALI, the W∕D ratio and total cell count and protein concentration in BALF were significantly decreased, the MPO activity was weakened, the MDA content was decreased, the SOD activity was enhanced, the expression of Nrf2 and HO-1 was up-regulated (P<0. 05), and the pathological changes were significantly attenuated in group MSCs. Compared with group MSCs, the total cell count was significantly increased, the MPO activity was enhanced, the MDA content was increased, the expression of Nrf2 and HO-1 was down-regulated ( P<0. 05) , and the pathological changes were accentua-ted in group B+MSCs. Conclusion Nrf2∕HO-1 signaling pathway is involved in bone marrow MSCs-in-duced reduction of endotoxin-induced acute lung injury in rats.

Objective To investigate the relationship between promotion of osteogenic differentiation of adipose-derived stem cells (ADSCs) by exosomes secreted by ADSCs and the Wnt/β-catenin signaling pathway. Methods ADSCs were extracted in the Plastic Surgery Department of the First Hospital Affiliated to China Medical University. Exosomes were extracted from ADSCs induced to differentiate into osteoblasts. The ADSCs were separated into four groups and used for measuring activity of alkaline phosphatase (ALP) by using enzyme-labeled assay, formation of calcium nodes by Alizarin red staining, and expression of β-catenin by Western blotting. Results ADSC-derived exosomes promoted differentiation of ADSCs into osteoblasts by upregulating the expression of β-catenin. Addition of Dickkopf-related protein 1 (DKK1), an inhibitor of Wnt/β-catenin pathway, inhibited expression of β-catenin which in turn resulted in reduced potential of ADSCs for osteogenic differentiation. Conclusion The osteogenic differentiation of ADSCs can be promoted by exosomes derived from ADSCs via the Wnt/β-catenin signaling pathway.

Objective To explore the application of UW solution in the replantation of the rat limb,and to explore a simple method for the ideal preservation of the amputated limbs.Methods From September,2017 to Janurary,2018,one hundred and twenty healthy adult male SD rats,weight 320-350 g,were randomly divided into 8 groups:A,B,C,D,E,F,G,H group.The isolated limbs of the control group A,C,E,G were cryopreserved in refrigerator at 4 ℃,while those of the experiment group B,D,F,H were preserved under the same condition after being perfused with UW solution.All the severed limbs were replanted back to the rats after different time length of cry opreservation:A,B 12 hours,C,D 20 hours,E,F 28 hours and G,H 36 hours.During the operations the femoral artery and venous patency were detected immediately after anastomosis.And after the operations the survival rates of limb replantation were observed.On the third day after the limb replantation,the tibial posterior muscle tissue was examined for pathology.The cell areas in pathological photographs were compared with Image analysis software Image-pro Plus 6.0 and the ultra structural changes of skeletal muscle tissue were observed.Results The femoral artery and venous patency in experiment group A,C,E and control group B,D,F were all 100 percent.However,in the group G,H the severed limb vessels changed obviously,the patency dropped markedly and the survival rates of limb replantation turned out to be 0.The experiment groups perfused with UW solutions,had relatively higher survival rates compared with the control groups (12 h:93.33％ vs.53.33％,20 h:80.00％ vs.40.00％,28 h:53.33％ vs.13.33％) and the skeletal muscles edema was lighter than that of the control group,with a larger proportion of cell areas(12 h:69.49±8.57 vs.44.75±6.34,20 h:56.34±7.73 vs.36.69±5.74,28 h:45.76±8.23 vs.31.49±7.72).There was a significantly difference (P＜0.05).Electron microscope observation showed that the experiment group bore a lighter damage of myofibril,interstitial tissue and mitochondria compared with the control group.Conclusion The combination of UW solution and cryopreservation of organs is an ideal and proper way to preserve the amputation limb,to extend the time limit for replantation,and to achieve a better recovery effect of postoperative limb function.Besides,UW solution is easy to be promoted in the treatment of isolated limb in clinical work.