ABSTRACT
Objective To investigate the clinical features of hypotensive maintenance dialysis patients after total parathyroidectomy with autotransplantation (TPTX + AT).Methods The consecutive patients who received TPTX + AT were enrolled between January 1,2010 and May 1,2015 in the nephrology department at the central hospital of Jiangmen.According to level of the blood pressure after TPTX + AT,the patients can be divided into hypotensive-group and non-hypotensive-group.The clinical and laboratory examinations of them were compared.Results The probability of calcification of aortic valve (4.76％ vs 30％,P =0.045),bicuspid valve (9.52％ vs 40％,P =0.032) and pulmonary hypertension (14.29％ vs 45％,P =0.043) was lower in the hypotensive-group with statistical significance.Serum parathyroid hormone [(9.31 ± 5.41) pg/ml vs (60.12 ± 96.95) pg/ml,P =0.021] and angiotensinⅡ (Ang Ⅱ) [(34.26 ± 15.73) pg/ml vs (63.78 ±23.55) pg/ml,P =0.000] were lower in the hypotensive-group with statistical significance.Serum intact parathyroid hormone (iPTH) (P =0.036) and AngⅡ (P =0.002) were the affecting factors of hypotension after TPTX + AT.Conclusions Hypotension after TPTX + AT is associated with the lower level of serum iPTH and Ang Ⅱ.The probability of calcification of cardiac valve and pulmonary hypertension is lower in the patients with hypotension,indicate that they may have better cardiac prognosis.
ABSTRACT
Objective To study the role of JAK-STAT singal transduction pathway in the interstitial fibrosis of unilateral ureter obstruction (UUO)mice. Methods Mice UUO model was established and the phosphorylation of JAK-STAT was examined at day 1,4,7 and 14 after ligation of the ureter.Mice in the treatment group were treated with daily injection of selective JAK2 inhibitor AG490 starting 2 h before ureter ligation until sacrifice while vehicle alone was given to mice in the model control group.Mice were sacrificed at day 14 after the establishment of model.Renal tubular lesion and interstitial fibrosis were assessed on paraffin section.Immunohistochemistry was used to detect renal macrophage infihration and α-SMA expression.The expression of collagen Ⅲ and MCP-1 mRNA was measured by RT-PCR.Phosphorylation of JAK2and STAT1 was examined by Western blotting. Results JAK2-STAT1 signaling transduction pathway was activated in UUO model.The activation of JAK2-STAT1 was closely correlated with the progression of renal injury,tubular histological lesions and interstitial fibrosis.AG490 treatment significantly inhibited the phosphorylation of JAK2 and STAT1 (P＜0.01).AG490 treatment also significantly reduced tubular lesions[(21.7 ±1.7)% vs (49.4±1.0)%]and interstitial fibrosis(1.0±0.1 vs 2.3±0.2),α-SMA expression(0.9±0.1 vs 2.1±0.2)and maerophage accumulation[(13.3±1.6)cells/HPF vs (34.4±1.0)cells/HPF](all P＜0.01).In addition,AG490 significantly inhibited the expression of collagen Ⅲ and MCP-1 mRNA. Conclusion JAK-STAT signaling plays an important role in renal tubulointerstitial inflammation and fibrosis.