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Transient D-Penicillamine-Induced Nephrogenic Diabetes Insipidus during Treatment of a Patient with Cystinuria —D-Penicillamine-Induced Nephrogenic Diabetes Insipidus

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Open Journal of Nephrology 2023年第4期13卷 378-384页

作者： Kamel El-Reshaid shaikha al-bader Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Department of Medicine Nephrology Unit Amiri Hospital Ministry of Health Kuwait City Kuwait

Background: Diabetes insipidus (DI) is a rare disorder characterized by inappropriate polyuria and hypo-osmolar urine. It is caused by inadequate production of antidiuretic hormone, in response to hypothalamic osmoreceptor-stimulation, from the pituitary gland (central DI) or resistance to its action at terminal distal convoluted tubules and collecting ducts (nephrogenic DI). Most cases of nephrogenic DI are caused by drugs, especially chronic lithium use. The Case: A 46-year-old man manifested such a disorder 8 months following d-Penicillamine (d-P) therapy for cystinuria. The drug was discontinued and the patient was managed conservatively with high fluid intake, diet low in protein and salt as well as alkalization of urine with Urolyte U to a pH > 7.5. Six weeks later, such side effect disappeared. Our patient had developed such phenomenon: a) without significant liver or renal disease to account for cumulative toxicity, and b) with a conventional dosage range of d-P. Such isolated toxicity indicates inherited a predisposition to this side effect. Conclusion: DI is a potential side effect of d-P therapy that is nephrogenic in site, transient in prognosis and an isolated phenomenon likely to reflect genetic predisposition.

关键词： Diabetes Insipidus D-Penicillamine Cystinuria Genetic Side Effect

The Beneficial Effect of Renin-Angiotensin-aldosterone System Blockade in Treatment of Hypertension, Resistant to Conventional Antihypertensives, in Patients on Maintenance Hemodialysis

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Open Journal of Nephrology 2023年第2期13卷 67-73页

作者： Kamel El-Reshaid shaikha al-bader Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Department of Nephrology Amiri Hospital Ministry of Health (Kuwait) Kuwait City Kuwait

Background: Hypertension (HTN) is present in up to 90% of end stage kidney disease (ESRD) patients irrespective of the etiology of their kidney disease. Moreover, it is an important modifiable risk factor for progression to ESRD and its overall cardiovascular morbidity and mortality. Objective: to evaluate, prospectively, the role of Renin-Angiotensin-aldosterone System blockade (RAAS) in HTN, resistant to 3 conventional antihypertensives, in patients on maintenance hemodialysis (MHD). Patients and methods: A total of 52 such patients were treated with Ramipril and 5 with Losartan after intolerable cough/shortness of breath following Ramipril-use. None of the patients had fluid depletion, renal artery stenosis and primary endocrinopathy. The study group was compared to a matched control group of MHD patients with normal blood pressure following 3 drugs-combination therapies. Results: all patients, with resistant HTN, had significant activation of RAAS system prior to treatment compared to inactive one in the control group. In those with resistant HTN, control of HTN, was established within 2 weeks of therapy and was associated with suppression of the RAAS. Such therapy was associated with minor side effects. Conclusion: Our study has shown that RAAS blockade is safe and effective in controlling such resistant HTN in MHD patients.

关键词： ACEI aldosterone Angiotensin ARB Hemodialysis Hypertension Renin Resistant Hypertension

A Problem-Solving in a Case of Medullary Nephrocalcinosis

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Open Journal of Nephrology 2022年第2期12卷 214-221页

Medullary Nephrocalcinosis (MNC) is defined as calcium deposition in tubular basement membrane and interstitium of the kidney medulla. It is 20 times more common than cortical one. In this case report, we present a 12-year-boy who presented with persistent nocturnal enuresis for 8 years. Physical examination and routine tests were normal except for microscopic hematuria. Renal ultrasound showed extensive MNC. Twenty-four-hour urine collection revealed normal mineral metabolic screen with low urinary excretion of calcium, phosphorous, magnesium and uric acid yet high for oxalates. Hence, and based on the above-mentioned data, certain metabolic disorders were ruled out: 1) hyperparathyroidism, 2) excessive intake of vitamin D, 3) hypercalcemia, 4) hypercalciuria, 5) hyperuricemia, 6) hyperuricosuria, 7) hypocitraturia, 8) cystinuria, 9) lysinuria and 10) distal renal tubular acidosis were ruled out. Subsequently, urine testing showed high concentration of glycolate with low glycerate and 4-hydroxy-2-oxoglutarates establishing diagnosis of type 1 primary hyperoxaluria (PH I). Further confirmatory tests included: 1) kidney biopsy which showed typical crystals deposition, 2) liver biopsy that confirmed deficiency of the liver-specific peroxisomal enzyme alanine: glyoxylate aminotransferase (AGXT), and 3) full gene analysis that confirmed gene mutation. In conclusion, our case report provides practical algorithm for establishing diagnosis in MNC which is not renal-limited and its prognosis depends upon the underlying etiology.

关键词： Hypercalcemia Hypercalciuria Medullary Nephrocalcinosis Mutation Primary Hyperoxaluria

Sequential Combination Diuretic-Therapy for Massive Fluid Overload in Furosemide-Refractory Patients with Diabetic Kidney Disease

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Open Journal of Nephrology 2021年第2期11卷 265-272页

Patients with renal disease are at risk of fluid overload which escalates as the disease progresses. In the present study, we evaluated the efficacy of sequential combination diuretic-therapy (SCDT) in management of massive fluid overload in Furosemide-refractory renal patients. The added diuretics were Spironolactone 25 mg daily for 3 days, to those without risk of hyperkalemia, followed by Hydrochlorothiazide 25 mg/Metolazone 5 mg daily for 3 more days. Excluded patients were those with 1) acute renal disease, 2) echocardiographic evidence of: a) left ventricular ejection fraction alvular disease, c) ASD or VSD, d) significant pericardial disease, and 3) significant limb venous disease or on drugs likely to cause limb-oedema. To assess the extent of fluid overload;clinical examination was complemented with radiological imaging as well as echocardiographic measurement of systolic pulmonary arterial pressure (sPAP). SCDT led to significant symptomatic, clinical, and radiological improvement of fluid overload without significant side effects. The latter were limited to hyperkalemia and hyponatremia which improved with dietary compliance. Moreover, hyperkalemia improved after subsequent addition of Thiazide/Metolazone. SCDT led to significant (p al excretion of sodium and decrease in body weight and sPAP. In conclusion;SCDT is a safe and efficacious measure to control fluid overload in patients with renal diseases.

关键词： aldactone Diabetes Mellitus Echocardiography Fluid Overload Furosemide Hydrochlorothiazide Kidney Disease Metolazone Spironolactone

Reversible Chronic Interstitial Nephritis Induced by Tacrolimus —Tacrolimus Chronic Interstitial Nephritis

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Open Journal of Nephrology 2023年第1期13卷 1-5页

Calcineurin inhibitors (CNI) are potent immunosuppressive agents in prophylaxis against graft rejection and autoimmune diseases including primary glomerulopathies. Previous research showed reversible;acute afferent arteriolar vasculopathy and irreversible chronic interstitial fibrosis associated with CNI nephrotoxicity. In this case report we describe a patient, with minimal change disease, that had developed chronic and progressive renal disease while receiving therapeutic dose of Tacrolimus. His serum creatinine had reached 537 umol/L and his nephrotic state worsened. Kidney biopsy showed chronic interstitial nephritis. Tacrolimus was discontinued and he was treated with 1 mg/kg prednisone in addition to Mycophenolate mofetil (MMF) 1 g twice daily. By the 2nd month;serum creatinine returned to normal and by the 3rd month serum albumin too. After 1 month of therapy;the dose of Prednisone was tapered down gradually till 5 mg daily by the end of 3rd month. Moreover, the dose of MMF was reduced to 500 mg X2 by the end of 3rd month. After 2 years of follow up;he remained stable and without relapse of NS or renal failure. In conclusion, reversible renal disease, due to chronic interstitial nephritis can be induced by CNI which is amenable to treatment with Prednisone and MMF.

关键词： Calcineurin Inhibitors Mycophenolate Mofetil Tacrolimus Interstitial Nephritis Minimal Change Disease Nephrotic Syndrome

The Deleterious Effect of Inappropriate Calcium and Vitamin D Supplementation during Pregnancy in Women Predisposed to Calcium Oxalate Urolithiasis

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Open Journal of Nephrology 2023年第3期13卷 256-262页

作者： Kamel El-Reshaid shaikha al-bader Abdullatif al-Terki Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Department of Medicine Nephrology Unit Amiri Hospital Ministry of Health Kuwait City Kuwait Department of Surgery Urology Unit Amiri Hospital Ministry of Health Kuwait City Kuwait

Background: Gestational formation of new urolithiasis is rare yet the impact of inappropriate gestational calcium and vitamin D supplementation (Ca/DS) is underestimated. Patients and Methods: we retrospectively evaluated 75 pregnant women with history of UL, yet were stable for >2 years on dietary restrictions, for new UL after Ca/DS. Results: During the past 5 years 21 (48%) of those who had received Ca/DS had developed UL and all had high Vitamin D with hypercalcemia while the remaining 31 patients, without Ca/DS, did not have UL and maintained normal vitamin D urinary calcium without need for supplementation. Overt UL was evident by 30th weeks of gestations and most were diagnosed by ultrasonography and managed by medical expulsive therapy. Conclusion: in patients with history of UL, prudent use of Ca/DS is indicated to avoid new UL.

关键词： Calcium Kidney Pregnancy Stones Urolithiasis Vitamin D

The Beneficial Effect of 12-Hour Fasting, 45 Minutes Exercise Thrice Weekly and Their Combination on Weight Loss, Anthropometric Measures and Metabolic Syndrome

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Food and Nutrition Sciences 2023年第5期14卷 451-461页

作者： Kamel El-Reshaid shaikha al-bader Samah Ghanem Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Department of Nephrology Amiri Hospital Ministry of Health Kuwait City Kuwait Qutaina Medical Center Mubarak Al-Kabeer Kuwait

Background: Obesity is the leading preventable cause of death worldwide. It is associated with significant increases in morbidity and mortality. Few studies have addressed, prospectively, the impact of life-style modification in weight-reduction in 1) morbidly obese patients with BMI > 35 kg/m2 and 2) on its associated co-morbid risk factors for metabolic syndrome viz. high blood pressure, diabetes, hyperlipidemia and steatohepatitis as well as psychiatric disorders. Patients and Methods: We prospectively evaluated the role of 1) two meals daily with in between 12-hour fasting, 2) thrice weekly 45-minute active-walk, and 3) their combination, in management of ambulant obese patients, at BMI of 35 to 39.9 kg/m2 who had such multiple acquired metabolic disorders. The study was conducted over 3 years with 45 patients in 3 matched groups with regards to gender, age, BMI, waist circumference, lipid profile (LDL and TG), fibroscan steatosis grade, psychiatric assessment, antidiabetic drugs and antihypertensive ones. Results: At 6 and 12 months, the 3 regimens were well tolerated and were effective in weight loss, improvement in anthropometric measures and management of metabolic syndrome yet the combined one was significantly better in all endpoints. Conclusion: Our protocols of exercise and dieting were effective measures in managing obesity and its associated co-morbidities and their combination is synergetic.

关键词： Hyperlipidemia Hypertension Metabolic Syndrome Obesity Psychiatric Disorders Type 2 Diabetes Weight Reduction

Three-Month-Induction Therapy with Prednisone and Mycophenolate Followed by Maintenance Therapy with Mycophenolate alone for 2 Years: An Effective and Safe Autoimmune Treatment for Triggering Factors Adults with Acute Non-Crescentic Nephritis Associated with Henoch-Schönlein Purpura

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Open Journal of Nephrology 2022年第1期12卷 154-161页

作者： Kamel El-Reshaid shaikha al-bader John Madda Department of Medicine Faculty of Medicine Kuwait University Kuwait City Kuwait Department of Medicine Nephrology Unit Amiri Hospital Ministry of Health Kuwait City Kuwait Department of Histopathology Amiri Hospital Kuwait City Kuwait

Background: Henoch-Schönlein purpura (HSP) is an acute systemic disorder characterized by IgA associated vasculitis. The available data indicate an inherited predisposition to disease with triggering autoimmune phenomena. Hence, we evaluated prospectively the role of a new autoimmune regimen in treatment of its severe nephrotic/nephritic flares associated with non-crescentic nephritis in adult patients. Patients and methods: The regimen consisted of an initial induction phase of 3-month Prednisone and Mycophenolate followed by a maintenance phase of Mycophenolate alone for 2 years. Results: They were satisfactory with complete remission in 5 of 7 patients and partial in 2. Creatinine clearance was normalized in patients with complete remission and remained stable in the partially-responsive ones. Conclusion: Our study has shown the short- and long-term safety and efficacy of such autoimmune regimen directed towards the autoimmune triggering factors in severe forms of non-crescentic HSP.

关键词： Acute Henoch-Schönlein Purpura Treatment Nephrotic Syndrome Nephritis Mycophenolate Mofetil

Propensity for Progressive Renal Disease in Nephroangiosclerosis: A Refractory Phenotype of Genetic Vasculopathy in Essential Hypertension

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Open Journal of Nephrology 2023年第3期13卷 220-225页

Background: Inadequate treatment of essential hypertension (EH), Obesity, smoking, carbohydrate intolerance, hyperlipidemia, and nephrotox-in-exposure are major confounding factors in progression of Nephroangiosclerosis (N). However, neither the prevalence nor the severity of EH is a reliable predictor of individuals at risk for subsequent nephropathy. Patients and Methods: A 10-years retrospective analysis of 165 adequately treated patients with EH. Results: We observed 2 different renal outcomes. Twenty-three (14%) patients manifested progressive renal disease with > doubling serum creatinine and proteinuria with 3 reaching end-stage kidney disease. At start, biopsy of those patients showed features of “benign” nephroangiosclerosis (N) ± secondary form of focal and segmental glomerulosclerosis (without immune deposits). On the other hand;142 with similar demographic characteristics, duration and severity of disease did not show significant renal disease on follow up. Conclusion: Induction of progressive N, in patients with EH, is compatible with phenotypic susceptibilities of genetic disorders.

关键词： Biopsy Kidney Disease Genetics Hypertension Outcome Nephroangiosclerosis