Association of Leisure Time Physical Activity and Metabolic Syndrome over 40 Years / 가정의학회지

BACKGROUND: This study aimed to investigate the relationship between leisure time physical activities (LTPA) and metabolic syndrome (MS). METHODS: Five thousand seven hundred and thirty two adults 40 years old or older were enrolled in the study from April 2009 to December 2010. National Cholesterol Education Program's Adult Treatment Panel III was used for the criteria of MS, and Minnesota Leisure Time Physical Activity Questionnaire was used to measure LTPA. After adjusted covariates (age, hypertension, smoking, drinking, education level, household income level, work time physical activities, and menopause for females), the relationship between LTPA and MS was analyzed using logistic regression analysis. RESULTS: The prevalence of MS was 22.8% in men, and 14.1% in women. Average LTPA was 1,498 kcal/wk in men, and 1,308 kcal/wk in women. After adjustment for covariates, the odds ratios of middle and low LTPA compared with high LTPA were 1.06 (0.87-1.34), 1.54 (1.08-1.75), for women, this same association was not seen in men. The prevalence of MS was 22.8% in men and 14.1% in women, and their LTPA burned 1,498 and 1,308 kcal/wk, respectively. When the odds ratio of MS for the high LTPA group was set at 1.0, the odds ratio of MS was 1.06 (0.87-1.34) in the middle LTPA group and 1.54 (1.08-1.75) in the low LTPA group in women, which showed that the MS risk increased when the LTPA was lower. This same association was not seen in men. CONCLUSION: LTPA was independently associated with metabolic syndrome, but only for women.

The Effect of Simultaneous Catheter Removal and Replacement for Recurrent Peritonitis and Catheter-related Infections in Peritoneal Dialysis Patients / 대한신장학회잡지

BACKGOUND: Recurrent peritonitis and catheter-related infection, in which removal of the PD catheter and temporary hemodialysis are required, are the main cause of limited technical survival in peritoneal dialysis (PD). The aim of this study was to verify whether the simultaneous catheter removal and replacement (SRR) is feasible and safe in patients with recurrent peritonitis and catheter-related infection. METHODS: From January 2001 to December 2004, We performed 47 SRR in 42 PD patients for the treatment of recurrent peritonitis and catheter-related infection to avoid the interruption of PD. RESULTS: Indications for SRR were recurrent peritonitis in 16 (34.0%), catheter infection without peritonitis in 16 (34.0%), catheter infection with peritonitis in 11 (23.5%) and peritonitis with dialysate leakage in 4 (8.5%). SRR was successful in 89.4%. However, SRR was failed in 10.6% due to persistent tunnel infection in three, drainage failure and hernia in each one. PD was continued after SRR during 14.5+/-11.8 months and subsequent catheter longevity ranged from 3 to 47 months. The most common causative organism of recurrent peritonitis and catheter-related infection was MRSA (25.5%). Subsequent peritonitis occurred in 52.4% of patients with the mean of 10.5+/-9.6 months after SRR. However, 81.8% of subsequent peritonitis were due to new organisms. Postoperative complications occurred in 16 cases (34.0%) including five cases with dialysate leakage, four with persistent tunnel infection, four with early peritonitis, two with drainage failure and one with bleeding. CONCLUSION: We conclude that SRR is a safe and effective procedure in patients with recurrent peritonitis and catheter-related infection without the interruption of PD.

A case of secondary renal amyloidosis complicating Crohn's disease / 대한내과학회지

Secondary amyloidosis is characterized by accumulation of an amorphous proteineous material in the various tissue and orgrans with infectious or inflammatory disease. Renal amyloidosis in Crohn's disease is a rare condition with proteinuria in the most cases and serious clinical complication due to the unfavorable prognosis. We are reporting a case of secondary renal amyloidosis in a 30-year old man with Crohn's disease presenting with nephrotic syndrome and renal failue.

Exit site infection in continuous ambulatory peritoneal dialysis single center experience / 대한내과학회지

BACKGROUND: Catheter-related infection is one of the most important causes of technical failure in peritoneal dialysis patients. We have examined the incidence and etiology of exit-site infection (ESI) at Keimyung University Dongsan medical center. METHODS: Between January 2001 and December 2003, 292 new patients received peritoneal dialysis using double cuffed straight Tenckhoff catheter and were reviewed retrospectively. RESULTS: In 292 patients, 81 (27.7%) patients experienced ESI and a total of 97 episodes of ESI has occurred during study period. The overall incidence of peritonitis during peritoneal dialysis was 0.27 episodes/patient-year. According to Twardowski's classification, equivocal infection in 14.4%, acute infection in 68.1% and chronic infection in 17.5% were noted. Staphylococcus aureus was the most frequently isolated organism, followed by Staphylococcus epidermidis, and Pseudomonas aeruginosa. The duration of treatment was significantly longer in chronic infection group than acute infection group (44.6 days vs. 18.5 days, p<0.05). The rates of Pseudomonas infection (p<0.05) and catheter replacement (p<0.05) were significantly higher in the chronic infection group than in the acute infection group. There was one catheter loss due to refractory peritonitis and three deaths unassociated with ESI during mean follow-up of 20.3 months. CONCLUSIONS: Exit-stie infection is still a major causes of peritonitis and catheter failure. Because of suboptimal quality of practice guideline, additional studies on the definition, prevention and treatment of ESI are required.

Clinical characteristics of idiopathic membranoproliferative glomerulonephritis / 대한내과학회지

BACKGROUND: Idiopathic membranoproliferative glomerulonephritis (MPGN) is a chronic primary glomerular disease that occurs in both children and adults, with generally progressive course. We have examined the clinical and long-term outcome of patients with idiopathic MPGN at Keimyung University Dongsan Medical Center. METHODS: Of the total 1,971 patients with biopsy-proven glomerulonephritis over the 21-year period from June 1982 and June 2003, there were 51 cases of idiopathic MPGN of whom 49 had type I and two type II. RESULTS: Of the total 51 idiopathic MPGN, male to female ratio was 1.7:1, a mean age at diagnosis was 32 +/- 17 years (range; 6-70) and 50% of the patients were under the age of 30. The clinical presentations at the time of diagnosis were nephrotic syndrome (70%), asymptomatic urinary abnormality (18%), acute nephritic syndrome (6%), and recurrent gross hematuria (6%). Of the 40 patients who followed more than 6 months, with a mean follow-up of 71months, 10 patients progressed to end-stage renal disease. The renal survival at 5 and 10 years after diagnosis were 86 and 52%, respectively. Eight (20%) patients obtained a complete remission and none of them progressed to end-stage renal failure. The quantity of proteinuria at the time of biopsy was much more prominent in deteriorating group, though not significant (p=0.05) and young age and female seemed associated with the complete remission (p<0.05). CONCLUSION: Idiopathic MPGN remains a disease with a poor prognosis. Age, gender and quantity of proteinuria at the time of diagnosis were associated with the prognosis. Further prospective study with larger number of patients would be necessary to assess the prognostic factors and effective therapy for idiopathic MPGN.

Clinical Characteristics and Long-term Outcome of Glomerulonephritis in Renal Allografts / 대한신장학회잡지

BACKGROUND: Since the introduction of cyclosporine, the short-term renal allograft survival has significantly improved. However, the long-term success is still limited by the development of chronic rejection and recurrent disease. Post-transplant glomerulonephritis (post-Tx GN) including recurrent disease is becoming an important cause of graft dysfunction. METHODS: From November 1988 to June 2004, a total of 629 renal transplants involving 588 patients were performed at our medical center. RESULTS: The prevalence rate of post-Tx GN was 11.9% in 629 renal transplant. Among 75 transplants diagnosed as post-Tx GN, IgA nephropathy (62.7%) was the most common histologic diagnosis, followed by focal segmental glomerulosclerosis (26.7 %), membranous glomerulonephritis (8.0%), membranoproliferative glomerulonephritis (1.3%) and diabetic nephropathy (1.3%). Documented histologic recurrence occurred in only 24.2% of patients with prior biopsy-proven glomerulonephritis of their native kidneys. The actuarial allograft survival at 5 and 10 years posttransplantation with post-Tx GN was 80.5 % and 27.9%, respectively; and the corresponding graft survival for patients without post-Tx GN was 74.9% and 52.3%, respectively (p<0.05). However, there was no significant difference in the graft survival according to type of post-Tx GN. The 5 and 10 year graft survival for patients with proteinuria over than 3.5 g/24 hr were 62.5% and 0%, which is significantly lower compared with 85.3% and 28.7% for patients with proteinuria less than 3.5 g/24 hr (p<0.01). CONCLUSION: In conclusion, post-Tx GN is associated with decreased long-term graft survival and nephrotic range proteinuria is most important prognostic factor for graft survival. A prospective study with rigorous efforts to make pretransplant diagnosis and standardized criteria for allograft biopsy will more accurately characterize the natural history of post-Tx GN and may provide insight regarding treatment.

Clinicopathologic Studies of Asymptornatic Urinary Abnormalities / 대한신장학회잡지

Asymptomatic urinary abnormalities are one of the most frequent abnormalities in clinical nephrology. Between April 1981 and February 1999, we conducted retrospective follow-up studies of 159 patients with asymptomatic urinary abnormality that was proven by kidney biopsy, and evaluated their histologic findings and natural course. Mean age was 34.7 years old and sex ratio of male to female was 78: 81. They were divided into three groups according to the initial urinalysis findings' six patients with isolated hematuria, 33 patients with isolated proteinuria, and 120 patients with concomitant hematuria and proteinuria. The mean follow-up period was 35.5+/-30.5 months. In pathologic findings, 95 cases(59.3%) had IgA nephropathy, 27 cases(17.5%) had minor lesion, 12 cases(7.5%) showed focal and segmental glomerulo- sclerosis, 10 cases(6.3%) had membrannvs glomer-ulonephritis, 9 cases(5.6%) had mesangial prolifera- tive glomerulonephritis. Amyloidosis and thin base-ment membrane disease were seen in two cases, respectively. There were no specific correlations between morphologic patterns and degree of proteinuria. During the mean follow-up period, hematuria or proteinuria disppeared in 14%, persisted in 49%, and developed renal insufficiency in 21%. During the mean follow-up period, isolated proteinuria disappeared in 24%, persisted in 36%, and developed renal insufficiency in 21%. We conclude that the most common cause of asymptomatic urinary abnormalities was IgA nephropathy and early diagnosis through renal biopsy and management is needed to prevent or slow the progression to chronic renal failure.

Recurrent Focal Segmental Glomerulosclerosis Following Renal Transplantation: Natural Course and Treatment with Plasmapheresis / 대한신장학회잡지

The recurrence of focal segmental glomerulosclerosis(FSGS) after renal transplantation has a potentially deteriorating course toward the loss of graft function. To identify risk factors for recurrence and efficacy of plasmapheresis, we evaluated outcome of 20 renal allografts in 18 patients with FSGS who underwent transplantation from March 1992 to September 1999. Recurrence was observed in seven of 18(39%) patients. Patients who had rapid progression to end stage renal disease, young age at the time of onset of the disease and the presence of mesangial proliferation tended to more frequent recurrence, albeit statistically not significant. Five patients underwent plasmapheresis. Proteinuria decreased from 5.3+/-2.1g to 0.8+/-0.7g immediately after completion of plasmapheresis. Four patients with an improvement in proteinuria had stable renal function at last follow-up. One patient who had chronic rejection lost graft function at 22 months after renal transplantation. In one in whom plasmapheresis was initiated immediately without allograft biopsy had long-lasting complete remission. Two patients who not receive plasmaApheresis, lost their graft funtion at 21 and 97 months after renal transplantation. We concluded that plasmapheresis in likely to be effective in the therapy of recurrent FSGS if the diagnosis is made promptly following the appearance of proteinuria, there is no significant hyalinosis on preplasmapheresis biopy and plasmapheresis is initiated immediately.

Tuberculous Intestinal Perforation Following Renal Transplantation / 대한이식학회지

The risk of tuberculosis in renal transplant recipients may be related to immunosuppressive therapy, and it continues to complicate transplantation in the cyclosporine era. Extrapulmonary manifestation and dissemination also common clinical findings in the transplant recipients. Intestinal tuberculosis that develops with the involvement of other organs is common. We present a case of tuberculous intestinal perforation in the living-related donor renal transplant recipient. A 42-year-old male was admitted because of sudden onset acute abdomen. In April 1995, he received allograft kidney from HLA-identical sister following treatment with cyclosporine-A and low-dose steroids. Allograft function was stable over the next 36 months. About 3 years later, multiple cervical lymph node swelling was observed. Initial lymph node biopsy was performed, which showed granulomatous lesions with positive AFB stain. The patient was treated with antituberculous therapy regimen included isoniazid, ethambutol and rifampicin for a month. A ultrasonography and CT of the abdomen showed multiple adhesions in the peritoneum and enlargement of the mesenteric lymph nodes. A laparatomy finding was inflammatory thickening of the bowel wall in the terminal ileum with necrotic perforation. The involved terminal ileum was removed together with end-to-end anastomosis and peritoneal lavage was done. The patient was improved two weeks after surgical laparotomy.