Objective To explore the value of carotid pulse wave combined with urinary transferrin(TRF)and β2-microglobulin(β2-MG)in the evaluation of renal injury in patients with hyperten-sive nephropathy.Methods A total of 30 patients with hypertensive nephropathy,30 patients with simple hypertension and 90 patients with non-hypertensive nephropathy who were admitted to our hospital between May 2021 and April 2024,and 30 healthy individuals(control group)who taking physical examination during same period were enrolled and assigned into corresponding groups,respectively.According to the severity of renal injury,the 120 patients from the hyperten-sive nephropathy group and non-hypertensive nephropathy group were divided into normal group(28 cases),mildly injured group(36 cases),moderately injured group(31 cases)and severely in-jured group(25 cases).The carotid pulse wave indicators[pulse wave velocity at beginning of the systole(PWV-BS),pulse wave velocity at ending of the systole(PWV-ES)],and urinary TRF and β2-MG levels were detected and compared in above groups.ROC curves were plotted to ana-lyze the diagnostic values of these indicators in hypertensive nephropathy.The relationship be-tween the above indicators and the severity of renal injury was analyzed with sequential multivari-ate logistics regression analysis.Results There were significant differences in PWV-BS,PWV-ES,and urinary TRF and β2-MG levels among the hypertensive nephropathy group,non-hyperten-sive nephropathy group,hypertension group and control group(P＜0.01).ROC curve analysis showed that the AUC value of the four indictors combined together in the diagnosis of hyperten-sive nephropathy was 0.907,which was statistically greater than that of single indicator alone(0.774,0.743,0.728,0.749,P＜0.01).Obvious differences were also observed in PWV-BS,PWV-ES,and urinary TRF and β2-MG levels among the severely,moderately and mildly injured groups and normal group(P＜0.01).Sequential multivariate logistics regression analysis indicated that PWV-BS(OR=1.824,95％CI:1.272-2.616,P=0.001),PWV-ES(OR=1.910,95％CI:1.268-2.877,P=0.002),and urinary TRF(OR=2.442,95％CI:1.485-4.018,P=0.001)and β2-MG levels(OR=2.807,95％CI:1.580-4.984,P=0.001)were influencing factors of renal injury severity in the renal injured patients.Conclusion Carotid pulse wave combined with urinary TRF and β2-MG can be applied in auxiliary diagnosis of hypertensive nephropathy,and they are correla-ted with the severity of renal injury.

Objective To explore the value of carotid pulse wave combined with urinary transferrin(TRF)and β2-microglobulin(β2-MG)in the evaluation of renal injury in patients with hyperten-sive nephropathy.Methods A total of 30 patients with hypertensive nephropathy,30 patients with simple hypertension and 90 patients with non-hypertensive nephropathy who were admitted to our hospital between May 2021 and April 2024,and 30 healthy individuals(control group)who taking physical examination during same period were enrolled and assigned into corresponding groups,respectively.According to the severity of renal injury,the 120 patients from the hyperten-sive nephropathy group and non-hypertensive nephropathy group were divided into normal group(28 cases),mildly injured group(36 cases),moderately injured group(31 cases)and severely in-jured group(25 cases).The carotid pulse wave indicators[pulse wave velocity at beginning of the systole(PWV-BS),pulse wave velocity at ending of the systole(PWV-ES)],and urinary TRF and β2-MG levels were detected and compared in above groups.ROC curves were plotted to ana-lyze the diagnostic values of these indicators in hypertensive nephropathy.The relationship be-tween the above indicators and the severity of renal injury was analyzed with sequential multivari-ate logistics regression analysis.Results There were significant differences in PWV-BS,PWV-ES,and urinary TRF and β2-MG levels among the hypertensive nephropathy group,non-hyperten-sive nephropathy group,hypertension group and control group(P＜0.01).ROC curve analysis showed that the AUC value of the four indictors combined together in the diagnosis of hyperten-sive nephropathy was 0.907,which was statistically greater than that of single indicator alone(0.774,0.743,0.728,0.749,P＜0.01).Obvious differences were also observed in PWV-BS,PWV-ES,and urinary TRF and β2-MG levels among the severely,moderately and mildly injured groups and normal group(P＜0.01).Sequential multivariate logistics regression analysis indicated that PWV-BS(OR=1.824,95％CI:1.272-2.616,P=0.001),PWV-ES(OR=1.910,95％CI:1.268-2.877,P=0.002),and urinary TRF(OR=2.442,95％CI:1.485-4.018,P=0.001)and β2-MG levels(OR=2.807,95％CI:1.580-4.984,P=0.001)were influencing factors of renal injury severity in the renal injured patients.Conclusion Carotid pulse wave combined with urinary TRF and β2-MG can be applied in auxiliary diagnosis of hypertensive nephropathy,and they are correla-ted with the severity of renal injury.

BACKGROUND:Diabetic nephropathy is an important cause of end-stage renal disease,and intestinal barrier damage plays an important role in the occurrence and development of diabetic nephropathy. OBJECTIVE:To observe the protective effect of human umbilical cord mesenchymal stem cells on the intestinal barrier in rats with diabetic nephropathy. METHODS:Thirty 8-week-old male SD rats were randomly assigned to healthy control group,model group and human umbilical cord mesenchymal stem cell group,with 10 rats in each group.Rats in the human umbilical cord mesenchymal stem cell group were injected with 1×106 human umbilical cord mesenchymal stem cells through the tail vein once a week for 4 weeks after the model establishment of diabetic nephropathy.Rats in the healthy control group and the model group were injected with an equal volume of PBS at the same time.1 week after the last injection,the histomorphological changes in the kidney and colon were observed under a light microscope.The expressions of ZO-1 and Occludin in the colon tissue of rats were detected by immunohistochemistry.Serum D-lactic acid and lipopolysaccharide levels were detected by ELISA.In addition,the distribution of human umbilical cord mesenchymal stem cells labeled with DiR dye in rats was observed by in vivo imaging system.The expression of human mesenchymal stem cell surface marker antigens CD44 and CD90 in colon tissue was detected by immunohistochemistry. RESULTS AND CONCLUSION:(1)Compared with the model group,human umbilical cord mesenchymal stem cell transplantation significantly inhibited the increase of urea nitrogen,serum creatinine,24-hour urine protein level and urinary albumin/creatinine ratio in diabetic nephropathy rats(all P<0.05).(2)The expression of human mesenchymal stem cell surface markers CD44 and CD90 was found in the colon of diabetic nephropathy rats.(3)Compared with the healthy control group,the expression levels of tight junction proteins Occludin and ZO-1 in the colon tissue of the model group were significantly reduced,while the expressions of Occludin and ZO-1 were significantly increased after treatment with human umbilical cord mesenchymal stem cells.(4)Compared with the model group,human umbilical cord mesenchymal stem cell transplantation significantly reduced serum D-lactic acid and lipopolysaccharide levels in diabetic nephropathy rats.(5)The results suggest that human umbilical cord mesenchymal stem cells may protect the intestinal barrier function by enhancing the expression of intestinal tight junction proteins in diabetic nephropathy rats.

Objective:To explore the application value of multiple indexes of high-frequency ultrasound in the diagnosis of shoulder stiffness, and to provide data support and theoretical basis for the diagnosis and treatment of shoulder stiffness.Methods:Clinical data of 261 patients with unilateral shoulder pain with limited mobility admitted to the Orthopedic Trauma, Hebei Medical University Third Hospital from January to December 2023 were retrospectively analyzed. With the results of shoulder arthroscopy as the gold standard, the patients were divided into 127 patients with shoulder stiffness (observation group) and 134 patients with non-shoulder stiffness and shoulder pain (control group). The fluid accumulation of long head of the biceps tendon (LHBT), echo of rotator interval (RI) and blood flow signal, thickness of coracohumeral ligament (CHL), thickness of subacromial-subdeltoid bursa (SASD), fluid accumulation and blood flow signal, fluid accumulation of posterior glenohumeral joint capsule (PJ), the inferior capsule thickness (ICT) and the thickness of inferior glenohumeral ligament (IGHL) were observed and measured in the two groups in addition, the CHL difference, ICT difference and IGHL difference between the affected side and the contralateral side were calculated, and the difference between the two groups of ultrasound indicators was compared and the multivariate logistic stepwise regression analysis was performed, and the receiver operating characteristic (ROC) curve was drawn to evaluate the diagnostic value of each indicator for shoulder stiffness.Results:RI hypoecho with increased blood flow signal, SASD thickening, SASD effusion, SASD blood flow signal detection rate, IGHL thickness, IGHL difference and ICT difference in observation group were significantly higher than those in the control group (all P<0.05). Multivariate logistic stepwise regression analysis showed that SASD thickening, SASD effusion and IGHL difference were independent predictors of shoulder stiffness (all P<0.05). The area under the curve of SASD thickening, SASD effusion and IGHL difference in the diagnosis of shoulder stiffness were 0.550, 0.540 and 0.636, respectively. The diagnostic sensitivity was 89.8%, 10.2% and 60.6%, and the specificity was 20.1%, 97.8% and 67.2%, respectively. The area under the curve was 0.676, the diagnostic sensitivity was 59.8%, and the specificity was 75.4%. Conclusions:High-frequency ultrasound is an effective imaging method to assist clinical diagnosis of shoulder stiffness. SASD thickening, SASD effusion and IGHL difference may be independent predictors of shoulder stiffness. The combined application of these three indicators has higher clinical application value and provides favorable ultrasound indicators for clinical differential diagnosis of shoulder stiffness.