To control hyperphosphataemia without hyperaluminaemia, A1(OH)3, which was given in addition to high doses of oral calcium, was replaced by Mg(OH)2 for 6 months in 20 haemodialysed patients and for 20 months in 12. The treatment during the control period was 110 +/- 91 mmol/day of oral calcium element given as CaCO3 and/or Calcium Sorbisterit and 1.05 +/- 1.47 g/day of A1(OH)3. Haemodialysis treatment was 4 h, thrice weekly. To prevent hypermagnesaemia, dialysate magnesium was decreased from 0.75 mmol/l to 0.375 mmol/l. After a control period of 3 months, Mg(OH)2 was given at a mean dose of 2.6 +/- 2 g/day and oral calcium supplements were decreased to 76 mmol/day. Two subsequent bone histomorphometry studies were performed at 8 month intervals in four patients and at 20 month intervals in seven patients. The results show a good control of plasma calcium (mean +/- SD: 2.43 +/- 0.1 mumol/l); phosphate (1.76 +/- 0.4 to 1.66 +/- 0.3 mmol/l); aluminum (1.3 +/- 0.1 mumol/l to 0.6 +/- 0.1 mumol/l); alkaline phosphatase (135 +/- 65 to 125 +/- 40 IU); and PTH fragments (PTH C terminal decreased from 260 +/- 214 to 185 +/- 182 pg/ml, PTH medium from 4185 +/- 5113 to 2270 +/- 4880 pg/ml). Plasma magnesium increased from 0.96 +/- 0.2 to 1.54 +/- 0.2 mmol/l. Bone histomorphometry shows no change in mineralisation, and a borderline decrease of resorption parameters. The main side-effects are (1) diarrhoea, which was well controlled by transient treatment with karaya gum, and (2) an increased need for potassium binders.(ABSTRACT TRUNCATED AT 250 WORDS)

Background Anterior uveitis (AU) is the most frequent extra-articular feature of axial spondyloarthritis (axSpA). We aimed to assess and compare the incidence of AU in axSpA patients treated with anti-TNF or anti-IL17A. Methods We systematically reviewed PubMed, EMBase, and Cochrane from inception to May 3, 2020, and searched for placebo-controlled and head-to-head randomized controlled trials (RCTs) assessing anti-TNF monoclonal antibodies (mAb) or soluble receptor fusion protein or anti-IL17A in patients with axSpA according to ASAS criteria and reporting safety data on AU. Data were extracted following a predefined protocol. We did pairwise and network meta-analyses for the primary outcome of AU flares (relapse or de novo) incidence and estimated summary odds ratios (ORs). We assessed the quality of evidence using the Cochrane risk-of-bias 2.0 tool. We ranked treatments according to their effectiveness in preventing AU flare using the P-score. Results We identified 752 citations and included 33 RCTs, comprising 4544 treated patients (anti-TNF mAb 2101, etanercept [ETN] 699, anti-IL17A 1744) and 2497 placebo-receiving patients. Incidence of uveitis was lower with anti-TNF mAb versus placebo (OR = 0.46; CI 95% [0.24; 0.90]) and versus anti-IL17A (OR = 0.34; CI 95% [0.12; 0.92]. According to the P-score, the ranking from the most to the least preventive treatment of uveitis flare was as follows: anti-TNF mAb, ETN, placebo, and anti-IL17A. Conclusion In RCTs assessing anti-TNF and anti-IL17A in axSpA, incident uveitis are rare events. However, this network meta-analysis demonstrates that anti-TNF mAb are associated with a lower incidence of uveitis compared to placebo and anti-IL17A.

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Background: Anterior uveitis (AU) is the most frequent extra-articular feature of axial spondyloarthritis (axSpA). We aimed to assess and compare the incidence of AU in axSpA patients treated with anti-TNF or anti-IL17A. Methods: We systematically reviewed PubMed, EMBase and Cochrane from inception to May 3, 2020, and searched for placebo-controlled and head-to-head randomized controlled trials (RCTs) assessing anti-TNF monoclonal antibodies (mAb) or soluble receptor fusion protein or anti-IL17A in patients with axSpA according to ASAS criteria and reporting safety data on AU. Data were extracted following a predefined protocol. We did pairwise and network meta-analyses for the primary outcome of AU flares (relapse or de novo) incidence and estimated summary odds ratios (ORs). We assessed the quality of evidence using the Cochrane risk-of-bias 2.0 tool. We ranked treatments according to their effectiveness in preventing AU flare using the P-score.Results: We identified 752 citations and included 33 RCTs, comprising 4544 treated patients (anti-TNF mAb: 2101, etanercept [ETN]: 699, anti-IL17A: 1744) and 2497 placebo-receiving patients. Incidence of uveitis was lower with anti-TNF mAb versus placebo (OR = 0.46; CI95% [0.24; 0.90]) and versus anti-IL17A (OR = 0.34; CI95% [0.12; 0.92]. According to the P-score, the ranking from the most to the least preventive treatment of uveitis flare was as follows: anti-TNF mAb, ETN, placebo, anti-IL17A. Conclusion: In RCTs assessing anti-TNF and anti-IL17A in axSpA, incident uveitis are rare events. However, this network meta-analysis demonstrates that anti-TNF mAb are associated with a lower incidence of uveitis compared to placebo and anti-IL17A.

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