Objective To explore the feasibility of magnetic compression technique (MCR) in the treatment of severe single mid-ureteral stricture in a rabbit model. Methods After 10 female New Zealand rabbits were selected, the distal end of the right ureter was ligated with silk thread. Two weeks after the operation, when the right ureter was dilated, the mid-ureter was ligated again with silk thread to create a severe single mid-ureteral stricture animal model. Longitudinal incisions were made at the upper and lower ends of the ligation site, and cylindrical NdFeB magnets with central holes (sub-magnets and main magnets) were placed to anastomose and recanalize the mid-ureteral stricture. The magnets were adjusted to the appropriate position to automatically align and attract each other. The longitudinal incision sites of the ureter were sutured with 6-0 Prolene thread, and the abdominal cavity was closed layer by layer. The operation time was recorded. X-ray films were taken every two days to confirm the position of the magnets and record the time of magnet detachment. Three weeks after the operation, the anastomotic specimens were obtained, and the formation of the anastomosis was evaluated with gross observation and histological staining. Results Two weeks after ligation, all experimental rabbits showed obvious dilation of the right ureter. The mid-ureteral ligation and placement of the male and female magnets were successfully completed in all 10 experimental rabbits, with an operation time of (24.00±5.15)minutes. The male and female magnets attracted each other well. X-ray examination showed that the magnets detached and entered the distal ureter (14.0±1.9) days after magnetic compression. The recanalization of the severe single mid-ureteral stricture was successfully achieved. The gross specimens and histological examination of the anastomosis showed that the anastomosis remained patent and the mucosal healing was good. All experimental rabbits survived well after the operation without serious complications. Conclusion MCT provides a new idea and novel method for the treatment of mid-ureteral stricture. This study confirmed the feasibility of this technique in treating severe single mid-ureteral stricture in a rabbit model. The operation is relatively simple and has potential for clinical application.

Objective To investigate the effects of LBL-007, a novel fully human lymphocyte activation gene 3 (LAG-3) monoclonal antibody, in combination with programmed cell death protein 1 (PD-1) antibody, on the invasion, migration and proliferation of tumor cells, and to elucidate the underlying mechanisms. Methods Human lymphocyte cells Jurkat were co-cultured with A549 and MGC803 tumor cell lines and treated with the isotype control antibody human IgG, LBL-007, anti-PD-1 antibody BE0188, or tumor necrosis factor-alpha (TNF-α, the NF-κB signaling pathway agonist). Tumor cell proliferation was assessed using a colony formation assay; invasion was measured by Transwell^TM assay; migration was evaluated using a wound healing assay. Western blotting was employed to determine the expression levels of NF-κB pathway-related proteins: IκB inhibitor kinase alpha (Ikkα), phosphorylated Ikkα (p-IKKα), NF-κB subunit p65, phosphorylated p65 (p-p65), NF-κB Inhibitor Alpha (IκBα), phosphorylated IκBα (p-IκBα), matrix metalloproteinase 9 (MMP9), and MMP2. Results Compared with the control and IgG isotype groups, LBL-007 and BE0188 significantly reduced tumor cell proliferation, invasion, and migration. They also decreased the phosphorylation of p-IKKα, p-p65 and p-IκBα, and the expression of MMP9 and MMP2 of tumor cells in the co-culture system. The combined treatment of LBL-007 and BE0188 enhanced inhibitory effects. Treatment with the NF-κB signaling pathway agonist TNF-α reversed the suppressive effects of LBL-007 and BE0188 on tumor cell proliferation, invasion, migration, and NF-κB signaling. Conclusion LBL-007 and anti-PD-1 antibody synergistically inhibit the invasion, migration, and proliferation of A549 and MGC803 tumor cells by blocking the NF-κB signaling pathway.
Humans ; Cell Proliferation/drug effects* ; Cell Movement/drug effects* ; Signal Transduction/drug effects* ; NF-kappa B/metabolism* ; Neoplasm Invasiveness ; Antibodies, Monoclonal/pharmacology* ; Programmed Cell Death 1 Receptor/antagonists & inhibitors* ; Cell Line, Tumor ; Antigens, CD/immunology* ; Lymphocyte Activation Gene 3 Protein ; A549 Cells ; I-kappa B Kinase/metabolism* ; Jurkat Cells ; Matrix Metalloproteinase 9/metabolism*

Objective:To analyze application effect of trend analysis for safe risk in management and control for infection of medical devices,so as to optimize the management path for medical devices.Methods:Focusing on the main factors affecting the safety risks of medical devices,the least squares method of linear regression was applied for trend analysis to optimize the device management path and strengthen management.A total of 70 clinically used medical devices in the First Affiliated Hospital of Xi'an Jiaotong University from January to December 2024 were selected.These devices were managed using two models:the conventional management model and the trend analysis management model,with 35 devices under each model.The infection risk rate of medical equipment and the equipment management quality score were compared between the two management models.Additionally,160 patients managed under the two models(80 patients per model)were included to compare the patient infection rate.Results:In the 450 diagnostic and treated records of sampling inspection and consultation for medical devices from treatment equipment,diagnosis equipment,auxiliary imaging equipment and surgical equipment,the rate of infectious risk of using management mode with trend analysis were respectively 1.78%(8/450),2.22%(10/450),2.22%(10/450)and 2.44%(11/450),all of which were significantly lower than these of using conventional management mode,and the differences were significant(x2=9.904,8.902,10.465,10.770,P＜0.05).The scores of cleaning quality,the quality of disinfection and sterilization,the quality of distribution,and the retrieving quality of the management mode with trend analysis for medical devices were significantly higher than those of the conventional management mode,and the differences were statistically significant(t=15.889,13.172,15.872,17.399,P＜0.05).The infection rate of patients in the trend analysis management mode was 6.25%(5/80),which was significantly lower than that in the conventional management mode[22.50(18/80)],and the difference was statistically significant(x2=11.006,P＜0.05).Conclusion:The trend analysis for safe risk can analyze the risk factors in use and operation for medical devices from multiple perspectives,and mining main factors and conduct intervention for the devices,and reduce the incidence of safe risks of medical devices and the patients'infection rate,and improve the quality of clinical services.

With the rise of digital healthcare in recent years, digital tools, as a new type of health management tool, are expected to become a feasible tool for rehabilitation exercise in stroke patients. The aim of this article is to review the current status of the application of digital tools in self-management of stroke recovery. In addition, the concept, function and application effect of digital tools are introduced, and the existing problems and future research directions are pointed out, in order to provide reference for the self-management of stroke patients in China.

[Objective] To explore the clinical features of IgG4-related urinary diseases so as to provide reference for the diagnosis and treatment of such diseases. [Methods] The clinical data of 4 cases of IgG4-related urinary system diseases diagnosed and treated in Xijing Hospital of Air Force Medical University during Aug.2019 and Dec.2023 were retrospectively collected.Here, we report on the diagnosis and treatment of these patients, analysing their symptoms, serology, imaging and pathology as well as their treatment and outcomes. [Results] The patients included 2 male and 2 female.The lesions were involved with the retroperitoneum and urinary system.Three patients had symptoms of lumbar pain.The imaging manifestations were complex, including retroperitoneal mass involving urinary system organs in 2 cases, tabdense shadow of the right kidney in 1 case, and simple cystic mass of kidney in 1 case.Serum IgG4 value was not detected before surgery.All patients underwent radical surgical treatment.Postoperative pathology showed fibrous tissue hyperplasia with a large number of plasma cells, lymphocytes, a few neutrophil infiltrates, and lymphoid follicles and obliterated vasculitis in some specimens.The number of IgG4⁺ plasma cells was more than 10 in all tissues under high power microscope.After surgery, 3 patients had symptoms improved, and serum IgG4 value was within the normal range; 1 patient (patem 3) had elevated IgG4 value during follow-up, received subsequent hormone therapy, and the serum IgG 4 level remained stable. [Conclusion] The symptoms of IgG4-related diseases involving the urinary system are non-specific, and the imaging findings are various, easily confused with other diseases.Early detection of serum IgG4 and biopsy pathology can help clinicians make correct diagnosis in the early stage.

Objective To analyze risk factors of hypokalemia after treatment with piperacillin-tazobactam(PTZ)and to provide a reference for safe clinical medication.Methods A retrospective collection of 1 355 inpatients treated with PTZ was conducted.Patients were assigned to the hypokalemia group(serum potassium<3.5 mmol/L,374 cases)and the non-hypokalemia group(serum potassium≥3.5 mmol/L,981 cases)based on whether they suffered from hypokalemia after PTZ treatment.Clinical data were collected and compared in both groups of patients.Multifactorial Logistic regression analysis was used to identify the influencing factors of hypokalemia induced by PTZ.Results In the hypokalemia group,there were 308 cases of mild hypokalemia(82.3%),63 cases of moderate hypokalemia and 3 cases of severe hypokalemia.The incidence of moderate to severe hypokalemia was 4.9%,with the lowest serum potassium concentration recorded at 2.1 mmol/L.The proportion of females,treatment duration,cumulative dosage,age-adjusted Charlson Comorbidity Index(aCCI),the percentage of patients with platelets(PLT)<100×109/L and the proportion of patients using glucocorticoids were all higher in the hypokalemia group than those of the non-hypokalemia group(P＜0.05).Conversely,baseline serum potassium levels and red blood cell(RBC)were lower in the hypokalemia group than those of the non-hypokalemia group(P＜0.05).Multivariate Logistic regression analysis indicated that female,increased cumulative dosage,elevated aCCI and lower baseline serum potassium concentration were risk factors for PTZ induced hypokalemia(P＜0.05).Conclusion Female,lower basline serum potassium level,long-term high-dose use of PTZ and high comorbidity index are risk factors for the occurrence of PTZ-induced hypokalemia.The changes in serum potassium during the medication period of this type of patients should be closely monitored to ensure the safety of drug use for patients.

Objective To analyze the effect of Shufeng Tongqiao decoction combined with methylprednisolone tablets in patients with chronic sinusitis and nasal polyp(CRSwNP)after operation.Methods A total of 104 patients with CRSwNP underwent endoscopic nasal surgery were prospectively selected,and patients were randomly divided into the hormone group(n=52,postoperative methylprednone tablets)and the study group(n=52,postoperative combined treatment with Shufeng Tongqin Decoction).After removal and shedding,50 cases were included in the hormone group,and 49 cases were included in the study group.The curative effect,lung wind-heat syndrome score,nasal mucosa recovery(assessed by Lund-Kennedy score system)and nasal mucosa remodeling were compared between the two groups.Serum levels of human β-defensin(HBD)-2 and high mobility group protein B1(HMGB1)were detected by enzyme-linked immunosorbent assay.Results The total control rate was higher in the study group than that of the hormone group(95.92%vs.80.00%,P＜0.05).At 12 weeks after surgery,the lung meridian wind heat syndrome scores,Lund-Kennedy scores and serum HMGB1 level were lower than before surgery in both groups(P＜0.05),and the study group was lower than the hormone group(P＜0.05).At 12 weeks after surgery,the epithelial injury grading was better in the study group than that in the hormone group(P＜0.05),and the basement membrane thickness was thinner than that in the hormone group(P＜0.05).Conclusion The joint of Shufeng Tongqiao decoction and methylprednisolone tablets has a better effect on postoperative CRSwNP patients,and it can greatly improve the levels of serum hBD-2 and HMGB1,effectively inhibit nasal mucosal remodeling,and greatly improve the recovery of nasal mucosa.

Adipose-derived stem cells(ASCs)have become important seed cells in tissue engineering,because of their unique advantages.Extensive research has been conducted to determine the ideal method of cryopreservation for ASCs.In this review,we summarize the basic cryobiology and cryopreservation protocols for ASCs,and look forward to future research into cryopreservation protocols for ASCs.

Adipose-derived stem cells(ASCs)have become important seed cells in tissue engineering,because of their unique advantages.Extensive research has been conducted to determine the ideal method of cryopreservation for ASCs.In this review,we summarize the basic cryobiology and cryopreservation protocols for ASCs,and look forward to future research into cryopreservation protocols for ASCs.