Treatment of membranous lupus nephritis with prednisone, azathioprine and cyclosporin A.
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Adult↗
Biomedical subjects
C B Leung
Publications and source records attributed to C B Leung.
Severe bone marrow failure associated with the use of alternating steroid with chlorambucil in lupus membranous nephropathy in Chinese.
Severe pancytopenia associated with the use of alternating steroid with chlorambucil regimen was described in six patients with nephrotic syndrome secondary to lupus membranous nephropathy (WHO class V). We believe this is the first report describing the life-threatening degree of marrow toxicity associated with this regimen of alternating steroid with chlorambucil in a Chinese population. Our data suggests that the susceptibility to marrow toxicity with the use of chlorambucil may only be applicable to Chinese patients with underlying systemic lupus erythematosus as a similar degree of toxicity has neither been reported in lupus patients of other ethnic groups nor in non-lupus patients of Chinese origin.
Adult↗
Cuffed-tunneled femoral catheter for long-term hemodialysis.
BACKGROUND: Hemodialysis access is a challenging problem in patients with exhausted dialysis access sites of their upper extremities. Femoral arterio-venous polytetrafluoroethylene (PTFE) graft is often necessary. The safety and efficacy of cuffed tunneled catheters at the femoral site for long-term hemodialysis has not been extensively studied. METHODS: We inserted 14 cuffed-tunneled femoral catheters in 11 hemodialysis patients with exhausted dialysis access sites of their upper extremities. Access survival and risk of infection were compared with the 11 femoral PTFE grafts in 10 patients of our center during the same period. The choice of dialysis access was determined by the individual nephrologist. Access survival was defined as the achievement of a blood flow rate of at least 180 ml/min. RESULTS: The median survival of tunneled femoral catheter and PTFE graft were 166 days and 560 days respectively (log-rank test, p = 0.33). Seven of the 14 tunneled femoral catheter remained in use 3 months after insertion. The incidence of catheter- or graft-related infection was 0.38 and 0.23 episodes per 100 catheter/graft days for tunneled femoral catheters and PTFE graft respectively (p = 0.6). Five tunneled catheters and one PTFE graft had to be removed because of infection. Blood flow rates achieved were comparable between tunneled femoral catheter and PTFE graft. CONCLUSIONS: Our preliminary data suggest that the cuffed tunneled femoral catheter has reasonable access survival and an acceptable risk of infection. It may provide a safe and effective access for long-term hemodialysis patients with exhausted access in their upper extremities, especially high risk patients who are not suitable for femoral PTFE graft creation.
Catheters, Indwelling↗
Posttransplant Epstein-Barr virus-associated myogenic tumors involving bone.
BACKGROUND: Epstein-Barr virus (EBV)-associated myogenic tumors in immunocompromised patients were recently recognized, but their biologic behavior remains only partially understood. Although observations so far have permitted the recognition of similarities between posttransplant myogenic tumors and posttransplant lymphoproliferative disorders (PTLD), the number of reports are still few, and new experiences continue to be informative. METHODS: The authors describe what they believe is the first example of posttransplant EBV-associated myogenic tumor involving bone, which is also remarkable for its multicentric symmetric limb distribution. Immunohistochemistry of tumor cells for myogenic antigens (desmin and smooth muscle actin), EBV antigens (latency proteins latent membrane protein-1 [LMP-1], Epstein-Barr nuclear antigen-2 [EBNA-2], and ZEBRA), p53, and bcl-2 was examined by standard avidin-biotin-peroxidase complex methods. Molecular techniques investigated in situ hybridization for Epstein-Barr virus-encoded messenger RNAs (EBERs) and single-strand conformation polymorphism analysis for p53 mutation. RESULTS: Although the biologic behavior of this tumor was uncertain, the reduction of immunosuppression arrested tumor growth for 5 years, at the expense of some loss in renal function. The occurrence of episodes of acute cellular rejection required pulse therapy, resulting in the appearance of new lesions in both liver and lungs. Despite these complications, a balance between control of this multicentric tumor growth and allograft survival has been maintained for 8 years. CONCLUSIONS: To the authors' knowledge, this example of posttransplant myogenic tumor is the first described in the bone. It shows partial response to immunomodulation with persistent tumor, with prolonged survival of the renal allograft.
Adult↗
Cochlear deafness in a Chinese family with Fechtner's syndrome.
OBJECTIVE: To identify the nature of the hearing impairment in the members of a Chinese family with Fechtner's syndrome. STUDY DESIGN: Retrospective case review. SETTING: Tertiary referral center. PATIENTS: A Chinese family with a variant of Alport's syndrome: high-tone sensorineural hearing loss, proteinuria, macrothrombocytopenia, and ocular disease. INTERVENTIONS: The diagnosis of Fechtner's syndrome was confirmed by the characteristic ultrastructure of the Döhle-like inclusion bodies in the neutrophils of the mother and her three children. Pure-tone audiometry, evoked response audiometry (ERA), and distortion product otoacoustic emissions (DPOAE) were performed in two subjects to investigate the hearing impairment. MAIN OUTCOME MEASURE: The parameters of the ERA and DPOAEs were correlated. RESULTS: In both subjects, the ERA was within normal limits, and there were no measurable DPOAEs in frequencies >2 kHz. CONCLUSION: The hearing loss in Fechtner's syndrome is cochlear rather than neural.
Adult↗
Outcome of IgA nephropathy in adults graded by chronic histological lesions.
This prognostic study of primary immunoglobulin A (IgA) nephropathy focused on chronic irreversible glomerular sclerosis and interstitial fibrosis, based on the premise that this disease is characterized by a protracted and, for many, progressive course. We used a chronicity-based histological grading system to assess the biopsy specimens of 126 adults with IgA nephropathy over a median follow-up of 10 years. Our grading system included a glomerular grading (GG) of 1 to 3 based on the extent of glomerular sclerosis, a tubulointerstitial grading (TIG) of 1 to 3 based on the degree of tubular loss or interstitial fibrosis, and the evaluation of hyaline arteriolosclerosis (HA). These three histological parameters were correlated with each other and with serum creatinine level, degree of proteinuria, and blood pressure at the time of renal biopsy. Univariate analysis showed that these three histological and three clinical parameters were significantly correlated with renal survival. By multivariate analysis using the Cox regression model, GG, serum creatinine level, and degree of proteinuria represented independent prognostic factors of renal survival. For a subset of patients at a relatively early stage of disease with a serum creatinine level less than 130 micromol/L at the time of biopsy, all three histological features and degree of proteinuria were significantly correlated with renal survival, and GG was the only independent prognostic factor for renal outcome. This study shows that glomerular sclerosis represents the most important prognostic factor in adult patients with primary IgA nephropathy and has a strong predictive value. Our chronicity-based histological grading system not only correlates well with the natural history of IgA nephropathy but is also reproducible and relatively simple to apply.
Adolescent↗
Hepatitis B virus-related nephropathy and lupus nephritis: morphologic similarities of two clinical entities.
We compared the clinicopathologic features of 22 patients with hepatitis B virus-related membranous nephropathy, all with detectable glomerular hepatitis B e antigen, and of 26 patients with lupus nephritis class V. Both groups of patients similarly presented with heavy proteinuria or nephrotic syndrome; however, the patients with hepatitis B virus-related membranous nephropathy, who were predominantly male, did not have the extrarenal manifestations and autoantibodies seen in systemic lupus erythematosus. The glomerular lesions in both clinical entities were similar and at times indistinguishable, demonstrating polyclonal immunoglobulins and polytypic complements in similar subepithelial ultrastructural distribution. No morphologic feature, single or combined, carrying a high positive predictive value for the diagnosis of either nephritis was identified. Lesions such as hematoxyphil bodies and fingerprint dense deposits, distinctive of systemic lupus erythematosus, were rarely found. At the time of biopsy, when systemic lupus erythematosus is not clinically suspected, the diagnosis between hepatitis B virus-related membranous nephropathy and lupus nephritis may be difficult or impossible to differentiate, especially in geographic areas where both lupus nephritis and hepatitis B surface antigen carriers are common. This study focused on the use of specific monoclonal antisera to detect glomerular hepatitis B virus antigens, which contribute to the diagnosis of hepatitis B virus-related nephritis.
Adult↗
Importance of dialysis adequacy in mortality and morbidity of chinese CAPD patients.
BACKGROUND: In continuous ambulatory peritoneal dialysis (CAPD), the impact of dialysis adequacy on patient outcome is well established in Caucasian patients but is less clear in Asian patients. Recent evidence suggests that Asian dialysis patients enjoy better overall survival. We hypothesize that dialysis adequacy may be less important in determining outcome for this ethnic group. METHODS: We performed a single-center prospective observational study. From September 1995, we enrolled 150 existing and 120 new CAPD patients. They were followed for up to three years. We monitored dialysis adequacy and nutritional indices, including Kt/V, weekly creatinine clearance (CCr), residual glomerular filtration rate (GFR), normalized protein catabolic rate (NPCR), percentage of lean body mass (%LBM), and plasma albumin level. Clinical outcomes included mortality, technique failure, and duration of hospitalization. RESULTS: The duration of study follow-up was 22.1 +/- 12.3 months. In our study population, 136 were male. Seventy were diabetic (25.9%), and 212 were treated with 6 L exchanges per day (78.5%). The body weight was 59.3 +/- 9.4 kg. Baseline total Kt/V was 1.78 +/- 0.41, peritoneal Kt/V 1.48 +/- 0.36, and median residual GFR 0.98 mL/min (range 0 to 7.45). Two-year patient survival was 83.0%, and technique survival was 72.8%. Multivariate analysis showed that the duration of dialysis, diabetes, %LBM, index of dialysis adequacy (Kt/V or CCr), residual GFR, and requirement of a helper for CAPD exchanges were independent factors of patient survival; serum albumin, adequacy index (Kt/V or CCr), and requirement of a helper were independent factors of technique survival. Duration of dialysis, body weight, requirement of helper, cardiovascular disease, HBsAg carrier, serum albumin, and CCr had independent effects on hospitalization. The peritoneal component of Kt/V or CCr had no independent effect on any outcome parameter. When the prevalent and new CAPD cases were analyzed separately, Kt/V predicted survival only for new CAPD cases. CONCLUSIONS: Our results show that dialysis adequacy has significant impact on outcome of Asian CAPD patients. Although we have excellent medium-term patient and technique survival, this favorable outcome should not prevent health care workers from providing adequate dialysis to Asian patients. The reason of discrepancy in outcome between Asian and Caucasian dialysis patients requires further study.
Adolescent↗
Factors predicting outcome of fungal peritonitis in peritoneal dialysis: analysis of a 9-year experience of fungal peritonitis in a single center.
Fungal peritonitis causes significant morbidity and mortality for patients undergoing continuous ambulatory peritoneal dialysis (CAPD). We retrospectively reviewed 70 episodes of fungal peritonitis in a single center over the last 9 years in 896 CAPD patients. Seventy percent of the episodes of fungal peritonitis were caused by Candida species, among which 50% were Candida parapsilosis. As a result of fungal peritonitis, 44% of the patients died, whereas further peritoneal dialysis failed in 14%, requiring a change to long-term hemodialysis. Only 37% managed to continue CAPD. The remaining 5% either underwent transplantation or were lost to follow-up. We identified the factors associated with poor outcome, namely mortality and technique failure. The presence of abdominal pain, bowel obstruction, and a catheter remaining in situ were significantly associated with greater mortality. Abdominal pain, antibiotic use within 3 months before fungal peritonitis, and complication by bowel obstruction were associated with greater technique failure. In choosing antifungal agents with catheter removal, oral fluconazole alone appears equally as effective as combined oral fluconazole with 5-flucytosine for peritonitis caused by Candida species. For peritonitis caused by species other than Candida, the choice of antifungal therapy needs to be individualized, based on fungal species and sensitivities.
Antifungal Agents↗
Independent effects of residual renal function and dialysis adequacy on nutritional status and patient outcome in continuous ambulatory peritoneal dialysis.
Dialysis adequacy has a major impact on outcome of continuous ambulatory peritoneal dialysis (CAPD) patients. However, there is a substantial confounding effect by residual renal function in most studies. We differentiated the effects of dialysis adequacy from those of residual renal function on nutritional status and outcome of CAPD patients. We identified 168 CAPD patients treated in our center between September 1995 and December 1996 and categorized them into three groups: 49 patients with an average total Kt/V of 1.93 +/- 0.18 and a median residual glomerular filtration rate (GFR) of 0. 07 mL/min/1.73 m(2) in the dialysis-dependent (DD) group; 48 patients with an average total Kt/V of 2.03 +/- 0.25 and a residual GFR of 2. 33 mL/min/1.73 m(2) in the residual renal function (RRF) group; and 71 patients with an average total Kt/V of 1.38 +/- 0.22 and a residual GFR of 0.05 mL/min/1.73 m(2) in the control (CTL) group. They were followed-up for 1 year to compare baseline nutritional status and 1-year morbidity. Baseline normalized protein catabolic rates (NPCR) are 1.00 +/- 0.20 and 0.96 +/- 0.19 (for RRF and DD, respectively) versus 0.89 +/- 0.16 g/kg/d for CTL (P < 0.01). Percentage lean body mass (%LBM) was 71.6 +/- 9.8 and 71.5 +/- 10.0 (for RRF and DD, respectively) versus 65.2 +/- 8.5% for CTL (P < 0. 001). No difference was seen in the nutritional status between RRF and DD groups. Duration of hospitalization for 1 year was 6.9 +/- 11. 8 days in the RRF group versus 14.9 +/- 25.1 in the DD and 10.6 +/- 11.6 days in the CTL groups (P < 0.05). The peritonitis rate was 44. 4 patient-months for the RRF group, versus 13.6 for the DD and 12.9 for the CTL groups (P < 0.05). There also was a trend toward superior 1-year technique survival in the RRF group, but the number of observations was small. There was no difference in duration of hospitalization, peritonitis rate, and technique survival between the DD and CTL groups. Short-term morbidity in patients without residual renal function appears to be independent of total Kt/V, although Kt/V may have some effects on nutritional status. The assumption that renal and peritoneal clearances are equivalent must be carefully reexamined. Further studies on the effect of dialysis adequacy in patients without residual renal function are urgently needed.
Adult↗
Parvovirus B19 infection causing red cell aplasia in renal transplantation on tacrolimus.
Parvovirus B19 infection is known to cause chronic anemia in immunocompromised hosts, including organ transplant recipients. Most reported cases of parvovirus B19-associated aplastic anemia in renal transplant recipients responded to intravenous immunoglobulin (IVIG) infusion. Tacrolimus is of special interest; it was proposed to be associated with pure red cell aplasia (PRCA) on its own because resolution of anemia on withdrawal of tacrolimus was previously observed. Interaction between parvovirus B19 infection and tacrolimus has not been reported. We report a case of parvovirus B19-associated PRCA in a renal transplant recipient treated with tacrolimus who failed to clear the virus despite repeated courses of IVIG. She showed complete recovery promptly after tacrolimus was switched to cyclosporine A. A well-documented concomitant decrease in serum parvovirus DNA polymerase chain reaction titer was also observed. This shows another mechanism by which tacrolimus can aggravate PRCA because of impaired clearance of parvovirus B19 infection in transplant recipients. For those patients receiving tacrolimus who have parvovirus B19 infection with refractory anemia and who fail to recover with IVIG, replacement of tacrolimus with cyclosporine A can be considered.
Adult↗
Clinical and biochemical characteristics of type 2 diabetic patients on continuous ambulatory peritoneal dialysis: relationships with insulin requirement.
Although glycemic control has an important impact on the clinical outcomes of patients with diabetes undergoing dialysis, there is a paucity of data on the relationship between glucose metabolism and clinical parameters in these patients. In this study, we compared a cohort of 48 patients with type II diabetes undergoing continuous ambulatory peritoneal dialysis (CAPD) with 84 age- and sex-matched patients with type II diabetes with similar disease duration but normal renal function. Compared with those with normal renal function, patients with type 2 diabetes undergoing CAPD had greater serum angiotensin-converting enzyme activity (median, 57.4 U/L; range, 33.5 to 100.0 U/L v 46.9 U/L; range, 11.6 to 111.2 U/L; P < 0.005), fasting C-peptide (median, 9.1 ng/mL; range, 0.9 to 30.0 ng/mL v 2.2 ng/mL; range, 0.2 to 20.3 ng/mL; P < 0.0001) and triglyceride levels, and lower serum albumin concentrations. Among the patients undergoing CAPD, there was a preponderance of men in the insulin-treated group. Insulin-treated patients also had greater plasma albumin levels and body weights and lower fasting serum C-peptide levels (2.81 +/- 1.77 v 3.12 +/- 2.04 ng/mL; analysis of variance, P = 0.007 adjusted for fasting glucose concentration). Multivariate analysis showed duration of diabetes, hemoglobin A(1c) (HbA(1c)) level, and body weight were independent determinants of insulin requirement in patients undergoing CAPD. The daily insulin dosage required was related to the duration of diabetes (r = 0.5; P = 0.007). In summary, among patients with end-stage renal failure, insulin-treated patients had greater body weights and plasma albumin levels but lower cholesterol levels. Plasma C-peptide concentration and duration of diabetes were the main determinants of insulin requirement, reflecting a decrease in beta-cell reserve, whereas the daily insulin dose correlated mainly with body weight, HbA(1c) level, and duration of diabetes. Kt/V had no effect on insulin resistance or insulin requirement of the patients.
Adult↗
Acute renal failure in a patient with Rosai-Dorfman disease.
Acute renal failure developed in a 57-year-old woman who had Rosai-Dorfman disease diagnosed 1 year previously on a cervical lymph node. Organ imaging showed diffuse masses infiltrating both kidneys. The renal biopsy showed a lymphoplasmacytic and histiocytic process extensively replacing the parenchyma, which is in keeping with Rosai-Dorfman disease of the kidneys. However, the typical lymphophagocytic cells were lacking. This case illustrates that diagnosis of Rosai-Dorfman disease in renal biopsy can be very difficult, requiring both exclusion of many benign and malignant lesions and a high index of suspicion for this condition. In particular, lymphoma was excluded based on the mixed polyclonal composition of inflammatory cells and the absence of atypical lymphoid proliferation. The renal function partially recovered after a course of therapy combining VP-16 (etoposide) and dexamethasone and remained stable over 4-year follow-up. This report emphasizes the importance of early diagnosis and intervention to safeguard renal function in extensive Rosai-Dorfman disease.
Acute Kidney Injury↗
Comparison of double-bag and Y-set disconnect systems in continuous ambulatory peritoneal dialysis: a randomized prospective multicenter study.
We performed a multicenter, single-blinded, prospective randomized study on the use of a double-bag disconnect system (B) versus a Y-set disconnect system (Y). The peritonitis rate, exit site infection, clinical outcome, and patients' acceptance to the procedure were assessed. A total of 120 new end-stage renal failure patients of three regional hospitals were randomized: 60 each to the B and the Y systems. The results of 60 patients on the B system and 51 on the Y system were analyzable. They were followed up for a median of 16 months. Peritonitis rates for the B and the Y systems were 33.5 and 29.4 patient-months per episode, respectively. Exit site infection rates for the B and Y systems were 17.4 and 16.0 patient-months per episode, respectively. Four catheters were removed in each group. Patients on the B system were hospitalized for 2.1 days per patient per year related to peritonitis and exit site infection, and those on the Y system were hospitalized for 1.2 days. There was no significant difference between the B and Y systems in the incidences of peritonitis (all causes and those due to coagulase-negative staphylococci), exit site infection, and in hospitalization days. However, there was a higher percentage of gram-positive infections in the Y system (52%) than in the B system (32%) and a lower percentage of gram-negative infections in the Y system (16%) than in the B system (32%). Patients on the B system had a better acceptance of the procedure than patients on the Y system, as assessed by a six-item, 10-point questionnaire (total score, 43.1 +/- 10.2 v 37.6 +/- 9.4; P < 0.005 at 1 month; 44.6 +/- 9.1 v 39.8 +/- 8.6; P < 0.01 at 6 months). From this study, it is concluded that the B and Y systems are similar in the incidences of peritonitis and exit site infection, although the B system is better accepted by patients. This is probably the first multicenter randomized study comparing the double-bag and Y-set disconnect system using only new patients who had never used other systems of continuous ambulatory peritoneal dialysis.
Adult↗
Successful medical eradication of tuberculous paranephric abscess in renal transplantation.
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Abscess↗
Skin carriage of acinetobacters in Hong Kong.
We studied the carriage of Acinetobacter spp. at five superficial sites in 79 patients from two hospitals, in 133 healthy controls from the community (medical students and new nurses), and in 198 student nurses in different classes. A total of 431 isolates from 364 positive sites of 201 subjects and 124 blood culture isolates (1997 to 1998) were genospeciated by amplified ribosomal DNA restriction analysis. Genospecies 3 was the most common species. The carriage rate of student nurses (42 of 131) was significantly lower than that of new nurses from the community (25 of 38) (chi-square test, P = 0.0004; odds ratio [OR], 4.08; 95% confidence limits, 1.78 to 9.41) but not significantly different (P = 0.1) from that of patients in the same hospital (20 of 42). Genospecies from blood cultures and subjects (acute patients and student nurses) from Prince of Wales Hospital were similar to one another but different from subjects from the community or from another hospital (chi-square test, P < 0.0001). Half of the subjects who were positive at at least two sites had different genospecies. Of the 28 sites examined, 68% showed strain variation among isolates of the same genospecies by random amplified polymorphic DNA analysis. Half of the 106 subjects who had samples taken again within 6 weeks or 6 months later were positive only once. In the 17 subjects who were positive on at least two occasions, each occasion yielded different genospecies in 13 subjects. Our results indicate that skin carriage in the majority of healthy subjects is characterized by low density, variation in genospecies and strains, short-term duration, and the typicality of a given locality.
Acinetobacter↗
Effective treatment of high-grade lymphoproliferative disorder after renal transplantation using autologous lymphocyte activated killer cell therapy.
Posttransplantation lymphoproliferative disorders (PTLD) is not uncommon and can occur in 2% to 5% of solid organ recipients on immunosuppression. Epstein-Barr virus (EBV) infection or reactivation and intensive anti-T lymphocyte treatment are important pathogenetic factors for a large proportion of these disorders. Nonclonal lesions with polymorphous histology have a potential for regressing when the immunosuppressants are reduced or stopped. Clonal tumors with a monomorphous histology carry a poor prognosis, and the mortality rate for monoclonal lymphoma has been reported as high as 80%. We report a renal transplant recipient who developed high-grade monoclonal lymphoma only 4 months after a live-donor transplantation. The tumor was EBV positive. Reduction of immunosuppressants resulted in minimal regression of the tumor. The patient was treated with adoptive immunotherapy using ex vivo generation of autologous lymphocyte activated killer (LAK) cells. She had leukapheresis, and autologous peripheral blood mononuclear cells were obtained and cultured in interleukin-2 (IL-2)-rich medium for 9 to 10 days. The IL-2-activated LAK cells were reinfused into the patient without any systemic administration of IL-2. The patient experienced no side effects during the infusion. There was no rejection episode, and the renal function of the patient remained stable after treatment. Computed tomography scan performed 2 months after the infusion showed marked regression of the lesions in the liver and spleen. Five months later, magnetic resonance imaging showed complete resolution of the tumor lesions. Ultrasonography 13 months after the LAK cell infusion showed no lesion. The allograft function was not affected after treatment. Adoptive immunotherapy using IL-2-activated autologous LAK cells was effective in treating this renal transplant patient with EBV-positive high-grade lymphoma. The patient's kidney allograft functioned well without any rejection.
Adult↗
Long-term treatment of lupus nephritis with cyclosporin A.
We evaluated the efficacy and safety of long-term treatment with cyclosporin A (CSA) in type IV lupus nephritis. Seventeen patients with biopsy-proven WHO type IV lupus nephritis were enrolled in a prospective, open study. Twelve of the 17 completed 48 months of treatment with CSA and prednisolone. Three patients required the addition of azathioprine, at 12, 38 and 47 months, respectively, for cutaneous disease flare with refractory rashes. One patient was lost to follow-up at 40 months. The mean +/- SD duration of treatment was 43.2 +/- 10.1 months (range 15.7-48 months). A significant reduction of proteinuria and a significant rise in serum albumin were noted 1 month after initiation of treatment. Improvement was maintained throughout the study except for three patients who relapsed with recurrence of nephrotic syndrome. There were no significant changes in serum creatinine level or creatinine clearances throughout the study. Repeat renal biopsy at 12 months following treatment with CSA showed histological improvement, with WHO type II changes in all 17 patients accompanying significant reduction in activity indices. Patients with baseline haemoglobin (Hgb) levels < 12 g/dl showed significant improvement. Serum C3 and C4 levels were not changed significantly. Corticosteroid-sparing effects were noted. Side-effects included hypertension, gum hypertrophy and mild hirsuitism, but were not serious. Combination therapy using CSA and prednisone is effective and safe for long-term treatment in lupus patients with WHO type IV nephritis.
Adult↗