Ryo Koda
Niigata University
Internal medicineRadiologyEndocrinologySurgeryPathologyRenal functionAntibodyIntensive care medicineTight junctionPediatricsMyeloperoxidaseCancellous boneHyponatremiaPrednisoloneEosinophiliaAdrenocorticotropic hormone deficiencyOsteomalaciaHemodialysisAdrenal insufficiencyImmunofluorescenceKidney diseaseHydrocortisoneFanconi syndromeDiseaseBone densityProteinuriavitamin D deficiencyKidneyIgG4-related diseaseCalcificationAcute kidney injuryRenal biopsyProstate biopsyAcute tubulointerstitial nephritisType 2 Diabetes MellitusClaudinNephrologyDiabetes mellitusMedicineComplicationBiologyGastroenterology
37Publications
6H-index
151Citations
Publications 36
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#1Ryo Koda (Niigata University)H-Index: 6
#2Satoru Miyazaki (Niigata University)H-Index: 1
Last. Ichiei Narita (Niigata University)H-Index: 55
view all 10 authors...
A 48-year-old woman with a 9-year-history of anorexia nervosa (AN) was admitted complaining of generalized bone pain. Blood tests showed hypocalcemia and hyperphosphatasemia, and a radiological survey revealed multiple rib fractures, suggesting complication with osteomalacia. Two years earlier, she had undergone subtotal colectomy for colon cancer. Her serum 25-hydroxy vitamin D concentration was below the detectable level. In addition to a poor nutritional intake and insufficient sun exposure, ...
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#1Satoru MiyazakiH-Index: 1
#2Noriaki IinoH-Index: 19
Last. Yoshikatsu Kaneko (Niigata University)H-Index: 19
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Aim We evaluated several sarcopenia-related hormones, cytokines and uremic toxins to identify the humoral factors associated with sarcopenia and frailty in Japanese hemodialysis patients. Methods Twenty Japanese patients aged ≥65 years who underwent maintenance hemodialysis therapy at Uonuma Kikan Hospital for more than 6 months were included in this retrospective cross-sectional study. Clinical data, including physical function and mental state, were obtained from the clinical records collected...
4 CitationsSource
#1Ryo Koda (Niigata University)H-Index: 6
#2Masafumi Tsuchida (Niigata University)H-Index: 5
Last. Ichiei Narita (Niigata University)H-Index: 55
view all 5 authors...
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#1Yoshinobu Seki (Niigata University)H-Index: 12
#2Ouki Nagano (Niigata University)
Last. Go Hasegawa (Niigata University)H-Index: 24
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A 66-year-old man with hypertension was diagnosed with chronic myelogenous leukemia in 1996. Treatment was started with hydroxycarbamide and imatinib 400 mg in 1996 + 6, which was increased to 600 mg. Although he achieved a complete cytogenic response in 1996 + 9, he could not continue imatinib because of edema; the regimen was changed to nilotinib 800 mg in 1996 + 13. After he achieved a molecular response better than 4.5 in 1996 + 19, he was referred to our hospital. His urinalysis had shown u...
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#1Nobumasa Ohara (Niigata University)H-Index: 10
#2Michi Kobayashi (Niigata University)H-Index: 2
Last. Noriaki Iino (Niigata University)H-Index: 19
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BACKGROUND Patients with end-stage renal disease undergoing long-term maintenance hemodialysis are more likely than the general population to exhibit primary hypothyroidism. Only a few cases of isolated adrenocorticotropic hormone deficiency (IAD) among hemodialysis patients have been reported. We herein report an unusual case of a patient undergoing long-term hemodialysis who exhibited both IAD and primary hypothyroidism. CASE REPORT A 82-year-old male with end-stage renal disease secondary to ...
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#1Ryo Koda (Niigata University)H-Index: 6
#2Masafumi Tsuchida (Niigata University)H-Index: 5
Last. Ichiei Narita (Niigata University)H-Index: 55
view all 11 authors...
: A 56-year-old man was referred to our facility after developing edema in his right leg. Enhanced computed tomography (CT) revealed a periarterial soft tissue mass surrounding the right iliac artery compressing the iliac vein. His elevated serum IgG4 level indicated IgG4-related disease (IgG4-RD). Both a percutaneous and surgical biopsy of this periarterial lesion proved challenging and were not pursued. A prostate biopsy, however, finally provided a histological diagnosis of IgG4-RD. Oral ster...
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#1Ryo Koda (Niigata University)H-Index: 6
#2Masafumi Tsuchida (Niigata University)H-Index: 5
Last. Ichiei Narita (Niigata University)H-Index: 55
view all 4 authors...
: A 68-year-old man with type 2 diabetes mellitus and chronic hepatitis B infection was referred to the nephrology department before planned surgery for hepatocellular carcinoma. He had been receiving low-dose adefovir dipivoxil (ADV) for 11 years. Laboratory findings revealed impaired re-absorption in the proximal renal tubules. He had been diagnosed with diabetic kidney disease and osteomalacia due to vitamin D deficiency; thus, ADV was not discontinued until he was referred to us. In this cas...
2 CitationsSource
#1Atsushi Kitazawa (Dokkyo Medical University)H-Index: 1
#2Ryo Koda (Dokkyo Medical University)H-Index: 6
Last. Tetsuro Takeda (Dokkyo Medical University)H-Index: 20
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IgG4-related disease (IgG4-RD) is a newly recognized fibroinflammatory condition. The kidney is one of the organs commonly affected by IgG4-RD. Tubulointerstitial nephritis (TIN) is the main feature, and membranous nephropathy (MN) has also been described frequently. In MN, polyclonal immunoglobulins and complements are deposited in granular form along the glomerular basement membranes (GBMs). Unusual cases of monoclonal immunoglobulin deposition disease (MIDD) associated with membranous feature...
5 CitationsSource
#1Ryo Koda (Niigata University)H-Index: 6
#2Ryo Itoh (Niigata University)H-Index: 1
Last. Ichiei Narita (Niigata University)H-Index: 55
view all 7 authors...
: Legionella pneumonia is occasionally accompanied by renal complications; however, the cause of this remains unknown. We herein report a 70-year-old Japanese man with Legionella pneumonia who presented with hyponatremia, hypophosphatemia, and hypouricemia. The levels of urinary β2-microglobulin and N-acetyl-β-D-glucosaminidase were remarkably high, indicating severe renal tubular damage. The presence of glycosuria and aminoaciduria as well as increased fractional excretion of uric acid and decr...
4 CitationsSource