Percentages of water, muscle, and bone decrease and lipid increases in early period after successful kidney transplantation: a body composition analysis.

BACKGROUND: Successful kidney transplantation (KT) can theoretically reconstitute body composition of a patient with chronic kidney disease (CKD). However, the practical changes have not been well documented. We evaluated changes in body composition among candidates before and 1 year after KT. METHODS: We enrolled 37 male and 18 female kidney recipients eligible for comparison of their body mass index (BMI), body composition, and lipid metabolism before and 1 year after KT. Twenty-one patients had been induced with a calcineurin inhibitor, mycophenolate mofetil, steroid, and basiliximab, and 34 others underwent steroid withdrawal on postoperative day 3. The body composition was analyzed using bioelectrical impedance. We also analyzed changes in BMI and lipid profiles. RESULTS: There was no significant change in BMI (21.4 ± 3.1 vs 21.7 ± 3.5 kg/m(2)). Regarding body composition, the water level decreased significantly (61.2 ± 4.9% vs 58.3 ± 5.3%; P < .05). In contrast, fat significantly increased (16.4 ± 6.7% vs 20.3 ± 7.1%; P < .05). More interestingly, successful KT significantly decreased the muscle and bone mass at 1 year after KT (37.3 ± 5.1% vs 34.8 ± 4.7%; 16.3 ± 2.1% vs 15.2 ± 2.1%; respectively; P < .05). Serum lipid profiles of total cholesterol, low-density lipoprotein cholesterol, and triglyceride worsened after KT. Comparing the 2 protocols, there was no difference in any item. CONCLUSIONS: Care must be taken even after successful KT to avoid dyslipidemia, which is a risk factor for cardiovascular disease. Well programmed dietary and/or exercise protocols to prevent muscle atrophy and fat gain should be considered even after successful KT.

Successful kidney transplantation ameliorates arterial stiffness in end-stage renal disease patients.

PURPOSE: Successful kidney transplantation (KTx) can ameliorate bodily damage caused by end-stage renal disease (ESRD). Arterial stiffness (AS) is one of the critical factors that shorten the survival of patients due to cardiovascular events. KTx may reduce AS as well; however, this has not been investigated well. We therefore conducted a retrospective study using noninvasive pulse wave velocity (PWV), which is a useful index of aortic damage. PATIENTS AND METHODS: Fifty-eight consecutive kidney recipients (34 men, 24 women) were enrolled in this study. Mean age at transplantation was 40.5 ± 12.3 years and the dialysis period was 73.1 ± 95.8 months. The brachial-ankle PWV was measured preoperatively and 6 months postoperatively. First, we investigated the relationship between the PWV and the other parameters related to AS. Second, we studied the pre- to posttransplant change in PWV to evaluate the amelioration of AS after successful KTx. RESULTS: PWV showed significant positive correlations with age, systolic blood pressure (BP), diastolic BP, and abdominal aortic calcification index. After successful KTx, PWV significantly decreased (P < .01). In addition, systolic and diastolic BP significantly decreased (P < .01 and P < .05, respectively). CONCLUSION: Successful KTx ameliorates AS in ESRD patients. This might explain the improved cardiovascular prognosis of ESRD patients who undergo KTx.

Role of lymph node dissection in the treatment of urothelial carcinoma of the upper urinary tract: multi-institutional relapse analysis and immunohistochemical re-evaluation of negative lymph nodes.

AIM: To determine the role of lymph node dissection (LND) in the treatment of urothelial carcinoma (UC) of the upper urinary tract (UUT). PATIENTS AND METHODS: [Study-1] A retrospective multi-institutional study evaluated 293 patients undergoing predominantly nephroureterectomy for UC of the UUT. Of 293 patients, 267 patients had pure UC and 26 demonstrated other histological components. Regarding the pathological node status, 130 patients had pN0 disease, 141 patients had pNx disease and 22 patients had pN+ disease. The sites of initial recurrence and time to first recurrence were reviewed. The sites of recurrence were classified as locoregional or distant recurrence. The relationship between node status and future recurrence was analyzed. [Study-2] Fifty-one patients treated by nephroureterectomy at Hokkaido University Hospital were included. All had LND and all LNs were negative on hematoxylin and eosin staining. We re-evaluated the presence of micrometastasis in LND specimens by anti-cytokeratin immunohistochemistory. RESULTS: [Study-1] Of 293 patients, 76 developed disease relapse. Regional lymph node recurrence was the most common site (34 patients). On multivariate analyses that adjusted for the effect of tumor stage and tumor grade, pNx (skipping LND) was an adverse factor not only for locoregional recurrence, but also for distant relapse. [Study-2] Immunohistochemistry identified micrometastases in 7 (14%) of 51 patients. Regarding survival, 5 of these 7 patients with micrometastases were alive at last follow-up. CONCLUSIONS: On relapse analysis, skipping LND was an adverse factor not only for locoregional recurrence, but also for distant relapse. Immunohistochemistry detected micrometastases in about 14% of patients previously diagnosed as pN0. These findings further support a potential therapeutic benefit of LND by eliminating micrometastases.

Characteristics of proliferative glomerulo-nephritis with monoclonal IgG deposits associated with membranoproliferative features.

BACKGROUND: Proliferative glomerulonephritis with monoclonal IgG deposits (PGNMID) associated with membranoproliferative features is an extremely rare entity. Information on clinicopathological features and prognosis in this entity is limited. METHODS: We reviewed 5,443 renal biopsies processed at our department, and identified 4 patients with PGNMID associated with membranoproliferative features. We evaluated clinicopathological features and outcomes in these patients, and characterized paraprotein deposits by immunofluorescence studies. RESULTS: Three out of 4 patients had nephrotic syndrome with renal insufficiency at presentation. Cryoglobulin or monoclonal protein in serum and urine was not detected. Renal biopsy showed membranoproliferative features with or without nodular formation. Tubulointerstitial and vascular alterations were mild in three patients. All patients had glomerular IgG-kappa deposits. Heavy chain subclass analysis performed in 3 patients showed IgG3 deposits. Immunofluorescence studies using antibodies specific for gamma-heavy chain C(H)1, C(H)2, and C(H)3 domains and gamma3 hinge did not show any apparent deletion. Confocal microscopy revealed glomerular colocalization of light and heavy chains. On electron microscopy, granular deposits were predominantly mesangial and subendothelial. All patients were treated with steroids and cytotoxic agents, but no effect on proteinuria was observed. The renal outcome was progressive in all patients. Early death was observed in two elder patients. No patient had overt myeloma or lymphoma at presentation or over the course of follow-up (mean 43 months). CONCLUSIONS: Our study suggests a predominance of IgG3-kappa glomerular deposits of nondeleted whole immunoglobulin molecules in PGNMID associated with membranoproliferative features. The clinical outcome in patients with this entity appears to be poor.

Successfully rescued renal graft artery thrombosis by ex vivo thrombectomy: a case report.

A 40-year-old woman who had been suffering from type II diabetes mellitus and consequent end-stage renal disease underwent living related kidney transplantation. The graft renal artery was anastomosed to the right internal iliac artery (end-to-end). Postoperative renoscintigraphy demonstrated normal graft perfusion. The serum lactate dehydrogenase level increased abruptly at postoperative day 15 and digital subtraction angiography disclosed graft artery thrombosis. Despite an intervention using a metallic coil stent, the rapid formation of thrombus occluded the graft artery completely. In an emergent surgical operation, the graft was nephrectomized carefully and irrigated after extensive thrombectomy. The graft was reimplanted by using an internal iliac artery graft. After three consecutive hemodialysis treatments, the patient's kidney graft functioned well. She has been in good health with stable graft function for 3 years after the operation.

GATA-3 is upregulated in peripheral blood mononuclear cells from patients with minimal change nephrotic syndrome.

BACKGROUND: An imbalance of Th1 and Th2 cytokines has been reported in MCNS. Interleukin-13 (IL-13: Th2 cytokine) has been implicated in the pathogenesis of MCNS, but Th1/Th2 regulators such as T-bet (Th1-specific transcription factor) and GATA-3 (Th2-specific transcription factor) have not been examined. METHODS: We isolated PBMC from 25 patients with MCNS during nephrosis and remission phases, from 17 nephrotic patients with membranous nephropathy (MN), and from 25 healthy subjects. We measured mRNA expression levels of T-bet, GATA-3, Stat5A (regulator of Th2 priming), IFN-gamma (Th1 cytokine), IL-2 (Th1 cytokine and activator of Stat5), IL-4 (Th2 cytokine), and IL-13 in PBMC, using real-time RT-PCR. RESULTS: GATA-3, Stat5A, and IL-13 mRNA expression levels were higher in the nephrotic MCNS group compared to the others. IL-2 mRNA expression levels were higher in nephrotic patients with MCNS and MN than in MCNS patients in remission and healthy controls. There were no differences in mRNA expression levels of T-bet, IFN-gamma, and IL-4 between MCNS and MN patients and healthy controls. CONCLUSIONS: This study is the first to reveal increased mRNA expression levels of GATA-3 and Stat5A in PBMC from MCNS patients in nephrosis. This study also supports recent findings suggesting the role of IL-13 in the development of MCNS. A predominant Th2 type of T cell activation may be involved in the pathogenesis of MCNS.

Clinicopathological features and prognosis in immunoglobulin light and heavy chain deposition disease.

BACKGROUND: There are three subtypes of monoclonal immunoglobulin deposition disease: light chain deposition disease (LCDD), light and heavy chain deposition disease (LHCDD), and heavy chain deposition disease (HCDD). Although it has been considered that LHCDD is a variant of LCDD, information on clinicopathological features and prognosis in LHCDD is presently limited. METHODS: We reviewed 5,443 renal biopsies, and evaluated clinicopathological features and outcomes in patients with LHCDD, in comparison with those in patients with LCDD and previously reported patients with HCDD. We also characterized paraprotein deposits in patients with LHCDD. RESULTS: We identified 6 patients with LHCDD, 6 patients with LCDD, and 1 patient with HCDD. The most common clinicopathological findings in patients with LHCDD were proteinuria, renal insufficiency, and nodular sclerosing glomerulopathy. Three patients had IgG-k deposits and 3 patients had IgG-l deposits. Heavy chain subclass analysis performed in 4 patients showed IgG3 deposits in all patients. Dual immunostaining revealed glomerular colocalization of light and heavy chains. In contrast with LCDD, glomerular C3 and C1q deposits were common findings in LHCDD and HCDD. All patients with LHCDD were treated with steroids and cytotoxic agents, but no effect on proteinuria was observed. Three patients developed end-stage renal disease requiring hemodialysis. The underlying hematological disorders in LHCDD and HCDD were milder than in LCDD. Early renal survival and overall patient survival in our patients appeared to be better in LHCDD than in LCDD. CONCLUSIONS: There are apparent differences in clinicopathological features and prognosis between LHCDD and LCDD. LHCDD is probably more similar to HCDD.

Renal amyloidosis associated with extracapillary glomerulonephritis and vasculitis in a patient with inflammatory bowel disease treated with infliximab.

A 70-year-old woman with an 11-year history of indeterminate inflammatory bowel disease developed rapidly progressive glomerulonephritis (RPGN) 3 months after the initiation of infliximab therapy. A renal biopsy showed Congo red-positive homogenous deposits in the mesangial area, glomerular capillary walls and arterial walls. Cellular and fibrocellular crescents were observed in 7 of 28 functioning glomeruli. There were findings of active tubulointerstitial nephritis and vasculitis of the small arteries. On electron microscopy, amyloid fibrils were observed in the deposits. Immunohistochemistry showed positive staining for amyloid A (AA) protein. After cessation of infliximab therapy, she was treated with methylprednisolone pulse therapy followed by oral prednisolone therapy. Thereafter, her RPGN was improved. This is a rare case of co-existent focal extracapillary glomerulonephritis with vasculitis and AA renal amyloidosis. Considering the temporal association of drug use with new onset of RPGN in our patient, we suggest a causal link between infliximab and RPGN due to extracapillary glomerulonephritis and vasculitis.

Predominant tubulointerstitial nephritis in a patient with systemic lupus erythematosus: phenotype of infiltrating cells.

A 63-year-old man with systemic lupus erythematosus developed tubular proteinuria. All subclasses of serum IgG increased, and the largest IgG subclass increase was IgG4. A renal biopsy showed lupus nephritis (Class II) with severe tubulointerstitial nephritis (so-called predominant tubulointerstitial lupus nephritis, an unusual form of lupus nephritis). Immunofluorescence microscopy revealed positive granular staining for IgG, C3 and C1q in the mesangium and peritubular interstitium, and along the tubular basement membranes (TBM). Electron microscopy also showed electron-dense deposits in the mesangium and TBM. Immunophenotyping of interstitial infiltrating cells disclosed a predominance of T cells. CD8-positive cytotoxic T cells infiltrated the peritubular interstitium, and some of these cells infiltrated the tubules. B cell-rich lymphoid follicles were also observed. IgG subclass analyses showed glomerular IgG1, IgG2 and IgG4 deposition, positive staining of IgG4 in the peritubular interstitium and along the TBM, and abundant IgG1-, IgG3- and IgG4-positive plasma cells in the interstitium. The patient responded well to moderate-dose steroid therapy. This is the first report of immunophenotyping of interstitial infiltrates in predominant tubulointerstitial lupus nephritis. The results suggest CD8-positive cytotoxic T cell-mediated tubular injury. Furthermore, immune complexes containing IgG4 might be one of etiologic factors.

Up-regulated expression of Toll-like receptors mRNAs in peripheral blood mononuclear cells from patients with systemic lupus erythematosus.

Recent studies in animal models for systemic lupus erythematosus (SLE) have shown that Toll-like receptors (TLR-7 and TLR-9) and interferon (IFN)-alpha are involved in the pathogenesis of murine lupus. Recent studies using flow cytometry have also shown increased expression of TLR-9 in peripheral blood mononuclear cells (PBMCs) from SLE patients. In this study, we performed quantitative real-time reverse transcription-polymerase chain reaction analyses of PBMCs from 21 SLE patients and 21 healthy subjects, to estimate TLR2, TLR3, TLR4, TLR5, TLR7, TLR8, TLR9, IFN-alpha and LY6E (a type I IFN-inducible gene) mRNA expression levels. Expression levels of TLR2, TLR7, TLR9, IFN-alpha and LY6E mRNAs in SLE patients were significantly higher than those in healthy controls. Expression levels of TLR7 and TLR9 mRNAs correlated with that of IFN-alpha mRNA in SLE patients. These results suggest that up-regulated expression of TLR7 and TLR9 mRNAs together with increased expression of IFN-alpha mRNA in PBMCs may also contribute to the pathogenesis of human lupus.

Up-regulation of TRAIL mRNA expression in peripheral blood mononuclear cells from patients with active systemic lupus erythematosus.

It is recently suggested that tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is involved in the pathogenesis of systemic lupus erythematosus (SLE). In this study, we examined whether expression levels of TRAIL depend on SLE activity. To estimate TRAIL mRNA expression levels in peripheral blood mononuclear cells (PBMC), we performed quantitative real-time reverse transcription-polymerase chain reaction analyses of PBMC from 18 SLE patients and 20 healthy subjects. Serum soluble TRAIL (sTRAIL) concentrations were measured by an enzyme-linked immunosorbent assay. The mean TRAIL mRNA expression level and serum sTRAIL concentration in SLE patients were significantly higher than those in healthy controls. Expression levels of TRAIL mRNA correlated with the SLE disease activity index and circulating immune complexes levels, while serum sTRAIL concentrations did not. These results indicate that increased expression of TRAIL mRNA in PBMC closely correlates with SLE activity and suggest an important role for TRAIL in the pathogenesis of SLE.

A case of plasmacytic hyperplasia arising in a kidney allograft salvaged with immunosuppression reduction alone.

Post-transplant lymphoproliferative disorder (PTLD) is a well-known complication of organ transplantation. Plasmacytic hyperplasia (PH) is thought of as the mildest form of PTLD; however, a graftectomy is necessary in most situations. We experienced an interesting case of PH arising in a kidney allograft, which could be relieved with a reduction in immunosuppression. A 27-year-old female underwent a living-related kidney transplantation. A 3-month non-episode protocol biopsy unexpectedly showed the devastating appearance of polymorphic plasma cell infiltration into the graft intersitium, compatible with PH. The PH was located in the graft by radiographic examinations. The infiltration of plasma cell disappeared completely on the 6-month graft biopsy specimen following immunosuppression reduction and the graft is functioning, although it was damaged by a subsequent acute rejection. Our present case indicates that some PTLD can be completely cured with a reduction in immunosuppression alone. The diagnostic modality for the evaluation of PTLD cell extinction is necessary to maintain graft function with adequate immunosuppression thereafter.

Characterization of 4-O-methyl-ascochlorin-induced apoptosis in comparison with typical apoptotic inducers in human leukemia cell lines.

Apoptosis can be induced by various stimuli such as the ligands of death receptors, chemotherapeutic drugs and irradiation. It is generally believed that chemotherapeutic drugs induce mitochondrial damage, cytochrome c release and activation of caspase-9, leading to apoptosis. Here, we found that an isoprenoid antibiotic, 4-O-methyl ascochlorin, significantly induces typical apoptotic events in Jurkat cells including the degradation of poly (ADP-ribose) polymerase, DNA fragmentation, activation of caspase-3, -9 and -8, and cytochrome c release from mitochondria. Similar to Fas stimulation, 4-O-methyl ascochlorin but not staurosporine, cycloheximide and actinomycin D, induced apoptosis in SKW6.4 cells, in which apoptosis is strongly dependent on death-inducing signaling-complex. Bcl-2 overexpression in Jurkat cells completely suppressed the apoptosis, but procaspase-9 processing was partially induced. A caspase-8 inhibitor, IETD-fmk, effectively suppressed poly (ADP-ribose) polymerase cleavage and cytochrome c release. However, 4-O-methyl ascochlorin induced apoptosis in Jurkat cells deficient of caspase-8 or Fas-associated death domain protein. These results suggest that 4-O-methyl ascochlorin induces apoptosis through the mechanism distinct from conventional apoptosis inducers.

Intravenous digital subtraction angiography and helical computed tomography in evaluation of living renal donors.

OBJECTIVES: The present study was carried out to evaluate the accuracy of helical computed tomography (CT) and intravenous digital subtraction angiography (IV-DSA) on anatomical assessment of renal vasculature for living renal donors. METHODS: Forty-two healthy potential renal donors were prospectively evaluated and 35 subsequently underwent donor nephrectomy after helical CT and IV-DSA evaluation. The vascular and non-vascular findings were compared between the findings on helical CT, IV-DSA and surgery. RESULTS: Ten prehilar branches and five accessory renal arteries were found at nephrectomy. Overall, operative findings agreed with the findings by IV-DSA in 89% and by helical CT in 83%. In delineating accessory arteries, IV-DSA had a sensitivity of 60% and specificity of 97%, whereas helical CT had a sensitivity of 40% and specificity of 100%. In delineating prehilar branches, IV-DSA had a sensitivity of 90% and specificity of 100%, whereas helical CT had a sensitivity of 70% and specificity of 100%. Accessory arteries and prehilar branches that were not detected by helical CT or IV-DSA, were less than 2 mm in diameter and did not require vascular reconstruction. Renal veins were delineated in 63% by IV-DSA, whereas they were clearly imaged by helical CT in all cases, including a case with a circumaortic renal vein. Non-vascular findings were obtained in 64% by helical CT, including two renal tumors. None of these findings were obtained by IV-DSA. CONCLUSION: Helical CT and IV-DSA provide comparably sufficient information on renal artery vasculature. However, helical CT provides significantly more information on venous and non-vascular findings as a single-imaging modality.

Prevalence of A-to-G mutation at nucleotide 3243 of the mitochondrial tRNA(Leu(UUR)) gene in Japanese patients with diabetes mellitus and end stage renal disease.

The A-to-G mutation at nucleotide 3243 of the mitochondrial tRNA(Leu(UUR)) gene (mt.3243A>G) is associated with both diabetes mellitus and myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (MELAS). Recently, this mutation was found in three diabetic subjects with progressive kidney disease, suggesting that it may be a contributing factor in the development of kidney disease in patients with diabetes. The aim of this study was to evaluate the contribution of this mutation to the development of end stage renal disease (ESRD) in patients with diabetes. The study group consisted of 135 patients with diabetes and ESRD. The control group consisted of 92 non-diabetic subjects with ESRD who were receiving hemodialysis. The mt.3243A>G mutation was detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). We found the mt.3243A>G mutation in eight patients (8/135; 5.9%), all of whom were initially diagnosed with type II diabetes. Five of the eight patients were subsequently also diagnosed with MELAS. We did not find the mutation in any of the 92 nondiabetic subjects with ESRD. The prevalence of this mutation was 6.5-fold higher in patients with diabetes and ESRD than in those with diabetes alone (8/135 vs 5/550, respectively; chi2 = 13.704; P = 0.0002). The mt.3243A>G mutation may be a contributing genetic factor in the development of ESRD in Japanese patients with diabetes.

Pre-emptive renal transplantation in children.

BACKGROUND: Renal transplantation is a definitive therapeutic modality in end-stage renal disease (ESRD). Most ESRD patients in Japan experience dialysis prior to renal transplantation. The present study was undertaken to examine the usefulness of pre-emptive renal transplantation (PET). METHODS: Between 1987 and 1998, 255 renal transplantations were carried out by the authors. Among those consecutive cases, 10 were cases of PET. In nine pediatric cases, demographics, graft and patient survival, height growth and benefits from successful transplantation were studied and compared with age-matched dialyzed transplantation controls. RESULTS: All transplantation was living-related. There was a disparity of causes of ESRD between the two groups. In PET, acquired renal deterioration due to a congenital lower urinary tract disorder was the major cause. Graft and patient prognosis was favorable in both groups. Growth retardation in PET patients under 15 years of age was significantly less apparent at the time of transplantation and after 3 years compared to the control. The benefits from transplantation were different in the two groups. Most PET patients felt an improvement of their physical condition; however, all of the control patients felt that the major boon was the freedom from the restriction of the daily diet and time for dialysis. CONCLUSION: In pediatric renal transplantation, short-term preceding dialysis does not have a detrimental effect, but PET could benefit ESRD patients by maintaining their quality of life. Moreover, PET minimizes the production of renal dwarfism in prepubertal children. Thus, PET should be taken into consideration in the choice of renal replacement therapy.

Asynchronous (heterochronic) bilateral renal infarction associated with primary antiphospholipid syndrome.

We report the rare case of a 51-year-old man with asynchronous (heterochronic) bilateral renal infarction associated with primary antiphospholipid syndrome. He was treated for right renal infarction, but 2 months later, while under anticoagulant treatment, he had a recurrence on the other side of the renal infarction. The laboratory work-up confirmed antiphospholipid syndrome. Six months later the patient has not experienced any new thrombotic episodes and is receiving oral anticoagulants and antiplatelet therapy.

Renal arteriovenous malformation with thrombus in the inferior vena cava.

BACKGROUND: Thrombus formation in the inferior vena cava (IVC) is usually seen in cases with malignancy. In contrast, vascular anomalies hardly ever accompany this disorder. Herein, a case of thrombus formation in the IVC associated with renal arteriovenous malformation (AVM) is reported. METHODS/RESULTS: A 50-year-old woman who received transarterial embolization (TAE) for AVM in the right kidney noticed right flank pain with macrohematuria 12 months later. Because radiographic evaluation could not rule out malignancy in the kidney, nephrectomy was performed. During nephrectomy, a palpable thrombus was found in the IVC, so thrombectomy was performed simultaneously. Histopathologic examination revealed an old infarction due to the TAE, circumferential arteriovenous thrombi and a large organized thrombus up to the IVC, but neither renal cell carcinoma nor transitional carcinoma in the kidney. CONCLUSIONS: Careful observation may be required, even after treatment for renal AVM, such as TAE, to avoid the formation of an IVC thrombus.

[Epidemiological evaluation of Serratia marcescens isolates in one Japanese hospital during the two years from April 1997 to March 1999].

One hundred fourteen isolates of Serratia marcescens from different patients in Showa University Fujigaoka Hospital during the 2 years from April 1997 to March 1999 were investigated in this study. The isolation frequency(37%, 43 of the isolates) of O-serotype 14(O14) was highest among the 16 different serotypes, and that(24%, 27 of the isolates) of O2 was secondarily highest, while these types were frequently isolated from patients in the surgical ward. O14 with major bacteriocin types 4 and 9(B4 and B9, respectively) showed resistance to piperacillin, the third and fourth generation cephems, new quinolones and aminoglycosides except gentamicin tested. However, O2 with major B1 and B5 showed much greater sensitivity to the antimicrobial agents tested than O14. Furthermore, O2 and O14 were frequently isolated from patients' sputa(41%, 11 of the 27 isolates) and urine(72%, 31 of the 43 isolates), respectively. These findings suggested that S. marcescens O14 with B4 and B9, more resistant to various agents, and O2 with B1 and B5, more sensitive to various agents, show a tendency to inhabit the urinary and respiratory tracts in the hospital patient's body, respectively, having a high risk of hospital infection.