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The study was a retrospective study. The clinical data of 866 patients with IgA nephropathy (IgAN) in Beijing Anzhen Hospital, Capital Medical University from March 2010 to March 2021 were analyzed, to investigate the clinical pathology and renal prognosis of IgAN patients with intrarenal arteriolosclerosis, and to preliminarily explore whether abnormal activation of complement system is involved in the injury of arteriolosclerosis. The patients were divided into renal arteriolar lesions group and non-renal arteriolar lesions group according to the renal histopathology, and the differences of clinical pathological manifestations, prognosis between the two groups were compared. The results showed that, compared with the non-renal arteriolar lesions group ( n=236), IgAN patients in the renal arteriolar lesions group ( n=630) had higher proportions of hypertension and malignant hypertension, higher levels of urinary albumin-creatinine ratio, 24-hour urine protein quantification and serum uric acid, lower estimated glomerular filtration rate, and more severe MEST-C lesions of the Oxford classification (all P < 0.05). Cox regression analysis results showed that intrarenal arteriolosclerosis was the independent risk factor affecting the progression of IgAN to ESRD ( HR=6.437, 95% CI 2.013-20.585, P=0.002). Renal histopathology showed that the deposition of complement C3c on the wall of intrarenal arterioles in the renal arteriolar lesions group ( n=98) was stronger than that in non-renal arteriolar lesions group ( n=18, P < 0.05). IgAN patients with renal arteriolosclerosis present with serious clinical and pathological manifestations, and renal prognosis. Abnormal activation of complement system may be involved in the pathogenesis of intrarenal arteriolosclerosis.
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Objective:To investigate the influencing factors of non-remission of proteinuria in patients with nephrotic syndrome (NS) and idiopathic membranous nephropathy (IMN).Methods:The study was a retrospective observational study. The clinical data of patients with NS who were diagnosed as IMN by renal biopsy and serum albumin recovered normal after six months of treatment were collected from Beijing Anzhen Hospital, Capital Medical University from June 1, 2010 to January 31, 2022. Patients were divided into proteinuria remission group and non-proteinuria remission group according to whether urinary protein < 3.5 g/24 h and decreased 50% from the onset. The differences of clinical and pathological characteristics between the two groups at baseline were compared. The logistic regression model was used to analyze the influencing factors of non-remission of proteinuria.Results:Ninety-five NS patients with renal pathology of IMN were included in this study, with age of 57(43, 65) years old and 50 males (52.6%). There were 75 patients in the proteinuria remission group and 20 patients in the non-proteinuria remission group. Compared with the proteinuria remission group, the non-proteinuria remission group had higher baseline body mass index [(26.83±4.03) kg/m 2vs. (24.68±3.97) m 2, t=-2.149, P=0.034] and proportion of overweight (85.0% vs. 58.7%, χ2=4.765, P=0.029), and larger waist circumference [88.5(85.3, 101.5) cm vs. 87.0(77.5, 92.0) cm, Z=2.362, P=0.018]. Renal pathological results showed that the proportions of diabetes nephropathy (10.0% vs. 0, P=0.043) and glomerular hypertrophy (45.0% vs. 20.0%, χ2=5.227, P=0.022) were higher, and the average diameter of hypertrophic glomeruli was longer [(197.96±6.37) μm vs. (193.51±8.50) μm, t=2.029, P=0.041] in the proteinuria remission group than those in the non-proteinuria remission group. Multivariate logistic regression analysis results showed that waist circumference was an independent influencing factor of non-proteinuria remission in patients with IMN under waist circumference > 90 cm in men and >85 cm in women ( OR=1.083, 95% CI 1.005-1.168, P=0.037). Conclusion:Abdominal obesity is an independent risk factor of non-remission of proteinuria in NS patients with IMN after early treatment.
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Objective@#: Angiolipomas are usually found in the subcutaneous tissue of the trunk and limbs. Spinal angiolipomas (SALs) are uncommon and have rarely been reported. We report a series of nine SALs patients who received surgical treatment in our department. To summarize the clinical characteristics of SALs, propose our surgical strategies, and evaluate the effects of the operation. @*Methods@#: This was a retrospective review of nine SALs patients who received surgical treatment from August 2015 to March 2020. Total or subtotal resection was determined by the axial localization (dorsal or ventral) and the extent of intervertebral foramen involvement. The outcomes were assessed based on the modified Japanese Orthopaedic Association (mJOA) scoring system utilized before surgery and at various follow-up points. @*Results@#: Among the nine patients, the mean mJOA score before surgery was 6.6±2.3, compared with 10.1±1.1 at the last follow-up time point (33.4±11.8 months). All patients achieved good outcomes, even in cases of subtotal resection. @*Conclusion@#: Early surgical resection of SALs is recommended, and the specific procedures should be determined by the axial localization (dorsal or ventral) and the extent of intervertebral foramen involvement. Most of the patients had a good prognosis, even in cases of subtotal resection.
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Objective:To investigate the role of complement activation in the pathogenesis of primary malignant hypertension (MHT) with nephrosclerosis complicated with severe cardiorenal injury.Methods:Data of MHT patients with nephrosclerosis proven by biopsy from January 2010 to December 2020 in the Beijing Anzhen Hospital, Capital Medical University were retrospectively analyzed. The expressions of complement-related component C4d, C1q, complement factor H-related protein 5, C3c and C5b-9 were detected by immunohistochemical staining. According to whether the patients were complicated with acute heart failure (AHF) and/or acute kidney injury (AKI), they were divided into severe cardiorenal injury group and non-severe cardiorenal injury group. The differences of clinicopathological data between the two groups were compared. According to the degree of C4d deposition in renal tissues, patients were divided into C4d diffused deposition group and non-C4d diffused deposition group. The severity of cardiorenal injury and the pathological characteristics of thrombotic microangiopathy in renal tissues were compared between the two groups.Results:A total of 33 patients were enrolled in this study, of which 17 cases (51.5%) were complicated with severe cardiorenal injury; AHF occurred in 16 patients (48.5%), AKI occurred in 8 patients (26.7%), and AHF and AKI were combined in 7 patients (21.2%). Compared with non-severe cardiorenal injury group, patients in severe cardiorenal injury group had higher levels of baseline lactate dehydrogenase [326.0 (217.0, 366.0) IU/L vs 197.0 (165.0, 220.0) IU/L, Z=37.000, P=0.002] and hemoglobin [(143.6±24.0) g/L vs (106.4±24.7) g/L, t=38.500, P<0.001], lower levels of 12 h urinary incontinence osmolality [400.0 (342.5, 504.0) mmol/L vs 476.0 (432.3, 616.5) mmol/L, Z=72.000, P=0.021] and serum albumin [(36.2±9.4) g/L vs (43.2±6.2) g/L, t=6.423, P=0.017], and thicker left ventricular posterior wall [(14.0±2.1) mm vs (12.1±1.1) mm, t=6.552, P=0.018]. The immunohistochemical results of kidney tissue showed that the proportions of C4d and C5b-9 diffused deposition in severe cardiorenal injury group were significantly higher than those in non-severe cardiorenal injury group (5/16 vs 0/15, P=0.043; 12/16 vs 5/15, P=0.032). Compared with non-C4d diffused deposition group, C4d diffused deposition group had higher incidence of AHF (5/5 vs 10/26, P=0.018), poorer heart function, more severe ventricular remodeling, and shorter history of hypertension [2.0 (0, 12.0) months vs 48.0 (9.5, 84.0) months, Z=22.500, P=0.022]. Conclusions:The incidence of severe cardiorenal injury in MHT patients with nephrosclerosis is about 51.5%. The proportion of diffuse deposition of complement activated components in renal tissues in patients with severe cardiorenal injury is higher than that in patients with non-severe cardiorenal injury. Overactivation of complement may be involved in the pathogenic process of severe heart and kidney injury caused by MHT.
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OBJECTIVE@#To explore the preventing infection measures of new coronavirus disease 2019(COVID-19) patients during mechanical ventilation, and to provide reference for the safe application of mechanical ventilation.@*METHODS@#Retrieved from PubMed, Ovid and other databases, and combined with the application experience of mechanical ventilation were collected to explore the preventing infection measures of COVID-19 patients during mechanical ventilation.@*RESULTS@#This paper put forward the preventing infection measures of external circuit, internal circuit, outer surface, filter and special parts in ventilator. The preventing infection measures of sputum suction and nebulization were summarized.@*CONCLUSIONS@#The preventing infection measures of COVID-19 patients during mechanical ventilation are successfully completed, which can provide suggestions for the application and maintenance of mechanical ventilation.
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Humans , Betacoronavirus , COVID-19 , Coronavirus Infections/therapy , Infection Control/methods , Pandemics/prevention & control , Pneumonia, Viral/therapy , Respiration, Artificial , SARS-CoV-2 , Ventilators, MechanicalABSTRACT
Objective: To investigate the effects of knocking down endoplasmic reticulum oxidoreduclin 1α (ERO 1α) gene expression on the proliferation, apoptosis, migration and autophagy of colon cancer cells, as wells as the possible mechanism. Methods: The Cancer Genome Atlas (TCGA) database was used to verify the expression of ERO1α mRNA in colon cancer tissues. The expression of ERO1α protein in colon cancer cell lines SW480, RKO, SW620, HCT116 and HT29 was detected by Western blotting. The recombinant lentiviruses carrying ERO1α-shRNA (shERO1α) and the control (shCtrl) were constructed and infected into colon cancer RKO cells, respectively. The fluorescence microscopy was used to evaluate the infection efficiency of lentiviruses in the two groups after 72 h. The expression level of ERO1α protein in RKO cells after infection was detected by Western blotting. The apoptosis of RKO cells was assessed by flow cytometry, and the expression levels of apoptosis-related molecules were detected by Western blotting. The proliferation of RKO cells was detected by Cellomics cell counter, and the cell cloning formation ability was detected by plate cloning formation assay. The migration ability of RKO cells was detected by Transwell chamber assay. Finally, the expression of key molecules in autophagy was detected by Western blotting. Results: The expression level of ERO1α mRNA in colon cancer tissues was significantly higher than that in the adjacent tissues (P < 0.001). The expression level of ERO1α protein in RKO cells was highest among the detected colon cancer cells. The recombinant lentivirus shERO1α was constructed successfully, and its infection efficiency into RKO cells was more than 80%. Compared with the control group, shERO1α could effectively knock down the expression level of ERO 1α gene (P < 0.01). ERO1α knockdown promoted cell apoptosis (P < 0.05), increased Caspase-3 expression (P < 0.01), and decreased Bcl-2 expression (P < 0.01). The proliferation, cloning formation and migration abilities of RKO cells were decreased after ERO1α knockdown (all P < 0.01). The expressions of autophogy-related molecules LC3 and Beclin 1 were increased (P < 0.05), and the expression of P62 was decreased (P < 0.01) in ERO1α knockdown cells. Conclusion: The ERO1α is highly expressed in colon cancer tissues and cell lines. Knockdown of ERO 1α gene can promote apoptosis, inhibit proliferation and migration, promote autophagy of colon cancer cells, suggesting that ERO1α plays an important role in the malignant process of colon cancer.
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Objective To evaluate the efficacy and safety of tolvaptan therapy for edema in patients with nephrotic syndrome(NS).Methods Twelve patients with NS who had normal serum sodium and blood volume were enrolled.All of them were treated with oral tolvaptan of 15-30 mg per day for 7 days.The diuretic effects were observed and the adverse reactions including electrolyte disorders(especially hypernatremia),low blood volume,thromboembolic complications,and acute kidney injury were closely monitored.Results The average urine volume was significantly increased(F=5.792,P ＜ 0.001)and the body weight was significantly decreased(F=24.086,P ＜ 0.001)from the first day of tolvaptan therapy until the end of the treatment.The average serum sodium levels were significantly increased from the second day of tolvaptan therapy until the end of the treatment(F=2.790,P=0.012),but only 3 case-times(3.6％)among the total 84 case-times of serum sodium tests showed mild hypernatremia(the highest level 146.5 mmol/L)and all the hypernatremia returned back to normal after suspending tolvaptan for one day.There were no significant changes in the serum potassium levels(F=0.477,P=0.849)within the whole treatment course.There was also no significant difference of the blood volume between the level at the end of treatment and the baseline level[(74.3± 3.0)ml/kg vs(74.9±3.0)ml/kg,P=0.855].The thromboembolic complications and acute kidney injury both also did not take place.Conclusions As long as a rational and prudent treatment regimen is applied,tolvaptan has good diuretic effects and safety for treatment of edema in the NS patients with normal serum sodium and blood volume.
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Objective To investigate whether the clinical and pathological injury of kidney in IgA nephropathy (IgAN) patients with hypertension is associated with circadian blood pressure rhythm change, particularly with elevated nocturnal blood pressure (BP). Methods This study was a retrospective cross-sectional study. Clinic and renal histopathological injury data were obtained from 83 IgAN patients with hypertension. First, 24 h ambulatory BP monitoring (ABPM) data were analyzed. Second, all these IgAN patients were divided into two groups, elevated nocturnal BP group and nocturnal normotensive BP group, and the clinical and pathological differences between this two groups were analyzed. Third, logistic regression analysis was used to analyze the influencing factors of renal tubulointerstitial injury in IgAN patients with hypertension. At last, all these IgAN patients were divided into two groups according to the level of estimated glomerular filtration rate (eGFR), group of patients with eGFR≥60 ml·min-1·(1.73 m2)-1 and the other group with eGFR<60 ml·min-1·(1.73 m2)-1, and the 24 h ABPM data were compared. Results (1) The proportion of non-dipper circadian rhythm of BP in IgAN patients with hypertension was 79.5％. (2) Compared with nocturnal normotensive BP group, patients in elevated nocturnal BP group had significantly higher levels of 24-hour urinary protein quantity and blood uric acid (both P<0.05), and lower eGFR and urine osmotic pressure clinically (both P<0.05). Index of interstitial fibrosis and tubular atrophy was significantly higher in nocturnal normotensive BP group (P<0.05), while the proportion of glomerular ischemia lesion was not significantly different between two groups. (3) Multivariate logistic regression analysis showed that elevated nocturnal BP was an independent risk factor for severe tubulointerstitial injury of IgAN (OR=1.113, 95％CI 1.038-1.192, P=0.002). (4) Compared with the group of eGFR≥60 ml·min-1·(1.73 m2)-1, 24-hour systolic blood pressure (SBP) and diastolic blood pressure (DBP), daytime SBP and DBP, nocturnal SBP and DBP were significantly higher in group of eGFR<60 ml·min-1·(1.73 m2)-1 (all P<0.05). Conclusion The proportion of non-dipper circadian rhythm of BP in IgAN patients with hypertension is as high as 79.5％. Elevated nocturnal BP is associated with the severity of renal damage, and elevated nocturnal BP is an independent risk factor for severe tubulointerstitial injury in IgAN patients with hypertension. Therefore, 24 h ABPM should be emphasized, and elevated nocturnal BP should be well controlled to slow the progression of IgAN.
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Objective To evaluate the diagnostic value of clinical laboratory indexes on judgment of hypovolemia in the patients with nephrotic syndrome (NS).Methods The blood volume of each 50 cases of healthy adult men and women was assessed with indocyanine green-pulse dye densitometry (ICG-PDD).The normal range of blood volume and the cut-off value of hypovolemia were determined.The blood volume of 81 patients with NS was also measured with ICG-PDD and then these patients were divided into the hypovolemic group (21 cases) and the non-hypovolemic group (60 cases) according to the cut-off value of hypovolemia.The test data of clinical laboratory indexes of the patients in the two groups were compared,and the indexes with statistic difference were screened out.Their diagnostic values on judgment of hypovolemia were evaluated by receiver operating characteristic (ROC) curve analysis,and finally the indexes with high judgment accuracy were selected.Results ①The cut-off values of hypovolemia are ＜ 52.9 ml/kg for the male and ＜ 52.5 ml/kg for the women,which were determined with ICG-PDD.②The five clinical laboratory indexes,including orthostatic heart rate (OHR) increase ＞ 10 bit per minute,fractional excretion of sodium (FENa) ＜ 1,transtubular potassium gradient (TTKG) ＞ 60％,blood urea nitrogen/serum creatinine ratio (BUN/Scr) ＞ 20,and urine specific gravity (SG) ＞ 1.020,were used to judge the hypovolemia in NS patients in this study.ROC curve analysis showed that the diagnostic accuracy in judgment of hypovolemia by one index or two indexes combination only belonged to medium level.However,the diagnostic accuracy in judgment of hypovolemia by the following three indexes combination,i.e.OHR increase+FeNa+BUN/Scr,FeNa+ BUN/Scr+SG,OHR increase+TFKG+BUN/Scr,or ORG increase+FeNa+TTTKG,reached high level.Conclusion This study obtained the cutoff value of Chinese adults hypovolemia are ＜ 52.9 ml/kg for the male and ＜ 52.5 ml/kg for the women,which are determined with ICG-PDD,through evaluation we recommend applying the above four specific combinations of three indexes for diagnosis of hypovolemia in NS patients.
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Objective To investigate the relationship of α-klotho protein and obesity related glomerulonephritis.Methods The chronic kidney disease (CKD) patients with or without ORG were diagnosed by renal biopsy.The normal and abdominal obesity control people were enrolled from the physical examination center.Propensity scoring analysis was done to balance the four groups of people in important clinical characteristics.The α-klotho levels in blood and urine were detected by ELISA.ORG mouse model was established and the mRNA and protein expression of klotho protein were detected by real-time quantitative PCR and Western blotting.Results (1) The plasma α-klotho levels decreased in ORG patients,CKD patients and abdominal obesity control people compared with normal control people [(251.7 ± 124.1) ng/L,(336.3 ± 126.1) ng/L,(377.1 ± 120.4) ng/L vs (472.3 ± 204.2)ng/L,all P ＜ 0.05].The ORG patients had the lowest plasma α-klotho levels (P ＜ 0.05).(2) ORG patients also had the lowest urine α-klotho levels compared with CKD patients,abdominal obesity and normal control people [(24.7±11.4) mg/mol vs (82.5±33.8) mg/mol,(74.5±32.5) mg/mol,(100.8±51.1)mg/mol,all P ＜ 0.05].There was no difference in urine α-klotho levels of CKD patients,abdominal obesity and normal control people.(3) Compared with the normal control mouse,ORG model mouse showed decreased mRNA and protein expression of α-klotho protein in renal tissue.Conclusion The lower plasma and urine α-klotho levels in ORG patients may be due to the reduced expression of α -klotho protein in kidney.
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<p><b>OBJECTIVE</b>To analyze the value of fractional flow reserve (FFR) measurement on endovascular therapy for patients with renal artery stenosis.</p><p><b>METHODS</b>Clinical data of 12 patients with Stanford B type aortic dissection complicated with renal blood flow injury in Anzhen hospital hospitalized from May 2013 to February 2014 were retrospectively analyzed. Renal artery angiography was performed and fractional flow reserve (FFR) was measured before Thoracic endovascular aortic repair. After operation, renal artery FFR was measured again, and renal artery stenting was performed in patients with FFR ≤ 0.90 or average pressure difference between proximal and distal of renal artery > 20 mmHg (1 mmHg = 0.133 kPa) and not applied for patients with FFR > 0.90.The patients were then subsequently followed up clinically. Kidney function were measured after 1 month, and contrast-enhanced ultrasonography data were obtained at 1 and 3 months later, respectively.</p><p><b>RESULTS</b>The FFR of 1 patient was 0.90, while the FFR of other patients were less than 0.90 before thoracic endovascular aortic repair. After the procedure,the angiography showed that the blood flow of renal artery in 8 patients were fluency, and the FFR index was over 0.90. There were 4 patients with FFR less than 0.90. After renal artery stenting, the FFR of these 4 patients were all above 0.90. Compared with pre-procedure, blood urea nitrogen ((8.84 ± 3.99) mmol/L vs. (5.18 ± 1.69) mmol/L, P = 0.011) and uric acid ((359.3 ± 77.3) µmol/L vs. (276.9 ± 108.3) µmol/L, P = 0.008) decreased significantly after 1 month, and there was no significant difference in serum creatinine (P = 0.760). Contrast-enhanced ultrasonography results showed that blood flow of renal artery were fluency after 1 month and 3 months.</p><p><b>CONCLUSION</b>In patients with aortic dissection complicating renal blood flow injury, the FFR measurement is meaningful in evaluating the blood flow status of target organs and guide the endovascular revascularization.</p>
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Humans , Aortic Dissection , Aortic Aneurysm , Endovascular Procedures , Hemodynamics , Kidney , Wounds and Injuries , Renal Circulation , Retrospective Studies , StentsABSTRACT
<p><b>OBJECTIVE</b>To analyze the value of fractional flow reserve (FFR) measurement on endovascular therapy for patients with renal artery stenosis.</p><p><b>METHODS</b>Clinical data of 9 patients underwent endovascular therapy due to moderate renal artery stenosis (50%-69%) in Anzhen hospital from May to September 2013 were retrospectively analyzed. Fractional flow reserve (FFR) were measured in patients with moderate stenosis in renal artery and abnormal glomerular filtration rate (GFR) or different between renal artery angiography and ultrasound before the procedure. Endovascular therapy was not applied for patients with FFR > 0.90, and the patients were subsequently followed up clinically. Endovascular therapy was applied in patients with FFR less than 0.90 or the pressure difference between the two ends of stenosis was more than 20 mmHg (1 mmHg = 0.133 kPa). Blood pressure, ultrasound and contrast-enhanced ultrasonography data were obtained at 1 and 3 months later, respectively.</p><p><b>RESULTS</b>There were 6 patients diagnosed as severe renal artery stenosis (≥ 70%) and the other 3 patients diagnosed as moderate renal artery stenosis by renal artery ultrasound before operation. Two patients with FFR > 0.90 were not undertaken the endovascular therapy. Seven patients with FFR < 0.90 underwent endovascular therapy. After renal artery stenting, renal stenosis was relieved immediately and the transstent blood flow was fluency in these 7 patients. There was significant difference in the FFR before and after operation (0.81 ± 0.09 vs.0.94 ± 0.03, P = 0.008). Among the patients underwent endovascular therapy, blood pressure was normal without medication in 2 patients and well controlled with 1 or 2 combined antihypertensive drugs in the rest 5 patients.</p><p><b>CONCLUSION</b>In patients with moderate renal artery stenosis, fractional flow reserve measurement could be used as a useful index to guide intervention procedure and to evaluate the efficacy of endovascular therapy.</p>
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Humans , Angiography , Constriction, Pathologic , Therapeutics , Fractional Flow Reserve, Myocardial , Hemodynamics , Renal Artery , Diagnostic Imaging , Renal Artery Obstruction , Therapeutics , Retrospective Studies , Stents , UltrasonographyABSTRACT
Objective To analyze the reasons for accidental extubation in infants during mechanical ventilation and to explore effective intervention countermeasures.Methods A total of 148 infants with accidental extubation from May 2013 to February 2014 who given routine nursing care were selected as control group.Another 152 infants with accidental extubation in pediatric intensive care unit (PICU) who given optimization nursing care from March to December 2014 were selected as observation group.Retrospective analysis of accidental extubation,artificial airway way and intervention care were conducted.Results The total intratracheal tube time was 283 d in control group and 253 d in observation group.Nineteen cases (6.7％) suffered accidental exudation in control group and that of 8 cases(3.2％) in observation group,and there was significant difference between two groups,x2=5.25,P＜0.05.The primary reason of unplanned extubation was that infants with unconsciousness,the second cause was the improper catheter fixed.The third cause was the patient's comfort level and so on the improper nursing operation leading to accidental extubation too short or too shallow.Conclusion Infants given mechanical ventilation should pay more attention to the intervention of accidental extubation,appropriate calm,physical constraints and correct fixed pipeline.
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Objective To investigate the protective effects of Wnt-7a protein on renal interstitial fibrosis in mice of unilateral ureteral obstruction (UUO)model.Methods Eighteen male C57BL/6 mice were randomly divided into 3 groups:sham-operation group,the UUO model group and Wnt-7a treatment group.The body weight of mice was measured everyday.All the mice were sacrificed at thc seventh day after the operation.The left kidney was taken for histology evaluation and molecular biology assay.Masson's stain was performed as a main indicator of interstitial fibrosis.The expression of vimentin,α-smooth muscle actin,and E-adherin in renal tissue was detected by immunohistochemistry staining and the expression of α-smooth muscle actin and E-cadhe(nn) in renal tissue was detected by Western blotting.Results Compared with sham-operation group,body weight of the (,)odel group was significantly lower (P＜0.05),and the relative area of interstitial fibrosis was significantly larger (P＜0.05).Furthermore,the expression of vimentin and α-SMA was significantly up-regulated (P＜0.05),and the expression of E-cadherin was significantly down-regulated (P＜0.05).Compared with model group,all the above-mentioned abnormalities were restored to some extent and showed significant differences (P＜0.05) in Wnt-7a treatment group.Conclusion Wnt-7a protein can decrease the interstitial fibrosis by inhibiting epithelial to mesenchymal transition in UUO mice.
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Objective:To study the effect of magnetism-medicine bag navel therapy on the immunological function of mice with splenasthenic diarrhea.Method:Forty KUN MING mice were randomly divided into 4 groups:negative control group,splenasthenic diarrhea model group,magnetism-medicine bag navel therapy group,false magnetism-medicine bag navel therapy group.The index of thymus,the index of spleen and the cabon clear index(?)of cabon clear test of the mice were determined.Result:The mice spleen index,thymus index and the cabon clear index(?) of cabon clear test of the magnetism-medicine bag navel therapy group increased significantly than those of the splenasthenic diarrhea model group(P
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Objective To explore whether LDL and oxLDL may induce kidney tubular epithelial-mesenchymal transition (EMT) and its mechanism. Methods The second generation human kidney tubular epithelial cells (TECs) were cultured for 24 hours in different conditions as (1) serum free as control, (2) treated with LDL (50 ?g/ml) , (3) treated with oxLDL(50 ?g/ml), (4) treated with LDL(50 ?g/ml) plus PD98059(5 ?mlo/L) , (5) treated with oxLDL(50 ?g/ml) plus PD98059 (5 ?mol/L). The expression of cytokeratin, E-cadherin, ?-SMA and vimentin was assessed by immunofluorescence and Western-blot. Western-blot was also performed to test the expression of collagen I and phospho-ERKl/2MAPK and phospho-GSK-3?. Results oxLDL was more potently in inducing tubular EMT than LDL at 24 hours as demonstrated by de novo a-SMA expression, increased expression of vimentin, partial loss of cytokeratin and reduction of E-cadherin expression by TECs. The expression of collagen I and phospho-ERKl/2MAPK and phospho-GSK-3? was increased in TECs stimulated by LDL or oxLDL. MAPK inhibitor (PD98059) inhibited the phosphorylation of GSK-3P and almost completely blocked oxLDL-induced tubular EMT. However, PD98059 alone was able to inhibit LDL-induced tubular EMT partially. Conclusions oxLDL is more potently in inducing tubular EMT than LDL. The ERKl/2MAPK-GSK-3? signaling pathway mediates the LDL or oxLDL-induced tubular EMT.
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Objective To investigate the expression of monocyte chemoattractant protein 1 (MCP-1) and RANTES and their significance in the pathogenesis of chronic allograft nephropathy.Methods Uninephrectomized F344 rats and LEW rats were used as control animals. Left renal transplantation LEW rats were used as experimental animals. Twelve weeks after transplantation, the renal function and the histological disorders of chronic allograft nephropathy were studied. The expression of MCP-1 and RANTES in the allografts was detected by immunohistochemistry.Results Compared with F344 control groups, the serum creatitine level ( 96.200 ? 36.405 ) ?mol/L in the experimental groups was increased ( P