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Tatsufumi Oka · SciRah

Researcher profile · Semantic Scholar

Tatsufumi Oka

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Tatsufumi Oka — researcher profile on SciRah

h-index: 16
Works: 59
Citations: 861

Most-cited papers

A Randomized Trial of Magnesium Oxide and Oral Carbon Adsorbent for Coronary Artery Calcification in Predialysis CKD.
Y. Sakaguchi, T. Hamano, Y. Obi, C. Monden +16 more
2019Journal of the American Society of Nephrology131 citations Open access
Semantic Scholar
Proteinuria-associated renal magnesium wasting leads to hypomagnesemia: a common electrolyte abnormality in chronic kidney disease.
Tatsufumi Oka, T. Hamano, Y. Sakaguchi, Satoshi Yamaguchi +17 more
2019Nephrology, Dialysis and Transplantation71 citations
Semantic Scholar
Cardiac hypertrophy elevates serum levels of fibroblast growth factor 23.
I. Matsui, Tatsufumi Oka, Y. Kusunoki, Daisuke Mori +11 more
2018Kidney International59 citations Open access
Semantic Scholar
Protein carbamylation exacerbates vascular calcification.
Daisuke Mori, I. Matsui, Akihiro Shimomura, Nobuhiro Hashimoto +13 more
2018Kidney International55 citations Open access
Semantic Scholar
Hidden Hypocalcemia as a Risk Factor for Cardiovascular Events and All-Cause Mortality among Patients Undergoing Incident Hemodialysis
Satoshi Yamaguchi, T. Hamano, Y. Doi, Tatsufumi Oka +9 more
2020Scientific Reports47 citations Open access
Semantic Scholar
Association between Density of Coronary Artery Calcification and Serum Magnesium Levels among Patients with Chronic Kidney Disease
Y. Sakaguchi, T. Hamano, Chikako Nakano, Y. Obi +15 more
2016PLoS ONE46 citations Open access
Semantic Scholar
Lithocholic acid increases intestinal phosphate and calcium absorption in a vitamin D receptor dependent but transcellular pathway independent manner.
Nobuhiro Hashimoto, I. Matsui, S. Ishizuka, Kazunori Inoue +15 more
2020Kidney International45 citations Open access
Semantic Scholar
Mineralocorticoid Receptor Antagonist Use and Hard Renal Outcomes in Real-World Patients With Chronic Kidney Disease
Tatsufumi Oka, Y. Sakaguchi, Koki Hattori, Yuta Asahina +4 more
2022HYPERTENSION35 citations Open access
Semantic Scholar
Prognostic value of hypochloremia versus hyponatremia among patients with chronic kidney disease-a retrospective cohort study.
Keiichi Kubota, Y. Sakaguchi, T. Hamano, Tatsufumi Oka +7 more
2018Nephrology, Dialysis and Transplantation35 citations
Semantic Scholar
Anion Gap as a Determinant of Ionized Fraction of Divalent Cations in Hemodialysis Patients.
Y. Sakaguchi, T. Hamano, Keiichi Kubota, Tatsufumi Oka +7 more
2017American Society of Nephrology. Clinical Journal35 citations Open access
Semantic Scholar
Low magnesium diet aggravates phosphate-induced kidney injury.
Y. Sakaguchi, T. Hamano, I. Matsui, Tatsufumi Oka +6 more
2018Nephrology, Dialysis and Transplantation31 citations
Semantic Scholar
Red cell distribution width and renal outcome in patients with non-dialysis-dependent chronic kidney disease
S. Yonemoto, T. Hamano, N. Fujii, Karin Shimada +9 more
2018PLoS ONE30 citations Open access
Semantic Scholar
Association of Time-Updated Anion Gap With Risk of Kidney Failure in Advanced CKD: A Cohort Study.
Yuta Asahina, Y. Sakaguchi, Sachio Kajimoto, Kohki Hattori +4 more
2021American Journal of Kidney Diseases28 citations Open access
Semantic Scholar
VEGF-A Links Angiolymphoid Hyperplasia With Eosinophilia (ALHE) to THSD7A Membranous Nephropathy: A Report of 2 Cases.
Ayumi Matsumoto, I. Matsui, T. Namba, Y. Sakaguchi +15 more
2019American Journal of Kidney Diseases24 citations
Semantic Scholar
Association between urinary uric acid excretion and kidney outcome in patients with CKD
Yuta Asahina, Y. Sakaguchi, Tatsufumi Oka, Koki Hattori +7 more
2024Scientific Reports22 citations Open access
Semantic Scholar
Mean corpuscular hemoglobin concentration: an anemia parameter predicting cardiovascular disease in incident dialysis patients
Satoshi Yamaguchi, T. Hamano, Tatsufumi Oka, Y. Doi +7 more
2021JN. Journal of Nephrology (Milano. 1992)17 citations
Semantic Scholar
Estimated Effect of Restarting Renin-Angiotensin System Inhibitors after Discontinuation on Kidney Outcomes and Mortality
Koki Hattori, Y. Sakaguchi, Tatsufumi Oka, Yuta Asahina +11 more
2024Journal of the American Society of Nephrology16 citations Open access
Semantic Scholar
Association of Longitudinal B-Type Natriuretic Peptide Monitoring With Kidney Failure in Patients With CKD: A Cohort Study.
Tatsufumi Oka, Y. Sakaguchi, Koki Hattori, Yuta Asahina +6 more
2023American Journal of Kidney Diseases12 citations
Semantic Scholar
Intradialytic hypotension and objectively measured physical activity among patients on hemodialysis
Koki Hattori, Y. Sakaguchi, Sachio Kajimoto, Yuta Asahina +4 more
2022JN. Journal of Nephrology (Milano. 1992)12 citations
Semantic Scholar
Serum phosphate levels modify the impact of parathyroid hormone levels on renal outcomes in kidney transplant recipients
Y. Doi, T. Hamano, N. Ichimaru, K. Tomida +13 more
2020Scientific Reports12 citations Open access
Semantic Scholar
Plant-Dominant Low-Protein Diets: A Promising Dietary Strategy for Mitigating Disease Progression in People with Chronic Kidney Disease—A Comprehensive Review
Jun-Ya Kaimori, Y. Sakaguchi, Tatsufumi Oka, Yoshitaka Isaka
2025Nutrients11 citations Open access
Semantic Scholar
Diagnosing metabolic acidosis in chronic kidney disease: importance of blood pH and serum anion gap
J. Kaimori, Y. Sakaguchi, Sachio Kajimoto, Yuta Asahina +4 more
2022Kidney Research and Clinical Practice11 citations Open access
Semantic Scholar
Electrocardiogram findings at the initiation of hemodialysis and types of subsequent cardiovascular events
Satoshi Yamaguchi, T. Hamano, Tatsufumi Oka, Y. Doi +9 more
2021Hypertension Research10 citations
Semantic Scholar
Cyclosporine A Treatment of Proteinuria in a New Case of MAFB-Associated Glomerulopathy without Extrarenal Involvement: A Case Report
J. Kaimori, Tatsuhiko Mori, Tomoko Namba-Hamano, T. Morimoto +11 more
2021Nephron8 citations
Semantic Scholar
Discontinuing renin-angiotensin system inhibitors after incident hyperkalemia and clinical outcomes: target trial emulation
Nobuhiro Hashimoto, Y. Sakaguchi, Koki Hattori, Yuki Kawano +11 more
2025Hypertension Research7 citations Open access
Semantic Scholar
A heterozygous LAMA5 variant may contribute to slowly progressive, vinculin-enhanced familial FSGS and pulmonary defects
J. Kaimori, Y. Kikkawa, D. Motooka, Tomoko Namba-Hamano +18 more
2022JCI Insight7 citations Open access
Semantic Scholar
Interstitial Eosinophilic Aggregates and Kidney Outcome in Patients with CKD
Koki Hattori, Y. Sakaguchi, Tatsufumi Oka, Yuta Asahina +6 more
2023American Society of Nephrology. Clinical Journal6 citations Open access
Semantic Scholar
Renoprotection by long‐term low‐dose tolvaptan in patients with heart failure and hyponatremia
Tatsufumi Oka, T. Hamano, T. Ohtani, Y. Doi +12 more
2021ESC Heart Failure6 citations Open access
Semantic Scholar
Time-updated anion gap and cardiovascular events in advanced chronic kidney disease: a cohort study
Yuta Asahina, Y. Sakaguchi, Sachio Kajimoto, Koki Hattori +4 more
2021Clinical Kidney Journal6 citations Open access
Semantic Scholar
Tuberculous Fasciitis in Polymyositis: A Rare Case of Extrapulmonary Tuberculosis
I. Nagayama, Katsuyuki Nagatoya, Y. Kurahara, A. Mega +6 more
2016Internal medicine6 citations Open access
Semantic Scholar
A Randomized Controlled Trial of Whole-Body Vibration on Gait Ability and Balance among Older Hemodialysis Patients
Yuta Asahina, Y. Sakaguchi, Sachio Kajimoto, Koki Hattori +4 more
2023American Society of Nephrology. Clinical Journal5 citations Open access
Semantic Scholar
Severe Osteomalacia with Dent Disease Caused by a Novel Intronic Mutation of the CLCN5 gene
Ayumi Matsumoto, I. Matsui, T. Mori, Y. Sakaguchi +14 more
2018Internal medicine5 citations Open access
Semantic Scholar
Low-grade proteinuria and atherosclerotic cardiovascular disease: A transition study of patients with diabetic kidney disease
Satoshi Yamaguchi, T. Hamano, Tatsufumi Oka, Yohei Doi +4 more
2022PLoS ONE3 citations Open access
Semantic Scholar
Variability in estimated glomerular filtration rate and patients' outcomes in a real‐world heart failure population
Tatsufumi Oka, T. Hamano, T. Ohtani, A. Tanaka +11 more
2021ESC Heart Failure3 citations Open access
Semantic Scholar
Accelerometry-Derived Physical Activity Levels and Mortality in Hemodialysis Patients: A Prospective Cohort Study.
Atsuko Hiraoka, Y. Sakaguchi, Hikaru Kadono, Takayuki Kawaoka +10 more
2025American Journal of Kidney Diseases2 citations
Semantic Scholar
Seasonal variations in the association between proteinuria, CKD, and kidney failure.
Takayuki Kawaoka, Y. Sakaguchi, Tatsufumi Oka, Yuta Asahina +11 more
2024Nephrology, Dialysis and Transplantation2 citations
Semantic Scholar
Collagenofibrotic Glomerulopathy Associated With Homozygous STAB2 and Heterozygous STAB1 Variants: A Case Report.
Satoko Yamamoto, Jun-Ya Kaimori, D. Motooka, Hirofumi Taniguchi +11 more
2026American Journal of Kidney Diseases1 citations
Semantic Scholar
Association of the Timing of Acute Declines in Kidney Function in Acute Heart Failure With Cardiovascular and Kidney Outcomes.
Wendy McCallum, H. Tighiouart, Marcelle L. Tuttle, Tatsufumi Oka +9 more
2026American Journal of Kidney Diseases1 citations Open access
Semantic Scholar
SP092THE POSITIVE ASSOCIATION BETWEEN SERUM MAGNESIUM LEVELS AND PLASMA ALDOSTERONE CONCENTRATIONS IN CKD
M. Senda, T. Hamano, K. Kubota, Tatsufumi Oka +5 more
20171 citations Open access
Semantic Scholar
An unusual case of acute kidney injury after colonoscopy.
Nobuhiro Hashimoto, I. Matsui, T. Namba, Tatsufumi Oka +6 more
2016Kidney International1 citations Open access
Semantic Scholar
WCN26-1912 Seasonal Variation in the Validity of Early Changes in Proteinuria as a Surrogate Endpoint
Shungo Fukuda, Y. Sakaguchi, Hikaru Kadono, Ryuta Uwatoko +6 more
2026Kidney International Reports0 citations Open access
Semantic Scholar
Age-dependent sex differences in acute kidney injury among patients with chronic kidney disease
Yuki Kawano, Tatsufumi Oka, Y. Sakaguchi, Takayuki Kawaoka +10 more
2026Scientific Reports0 citations Open access
Semantic Scholar
Causal Effects of Early Discontinuation of Proton Pump Inhibitors on Kidney Failure
Yuki Kawano, Tatsufumi Oka, Y. Sakaguchi, Hikaru Kadono +12 more
2026Kidney International Reports0 citations Open access
Semantic Scholar
Normoproteic Plant-Dominant Protein Diets, Uremic Toxins, and Gut Microbiota in Patients With Advanced CKD: A Randomized Controlled Trial.
Ryuta Uwatoko, Y. Sakaguchi, Tatsufumi Oka, Yohei Doi +8 more
2026American Journal of Kidney Diseases0 citations
Semantic Scholar
Effects of a Hypertension Management Mobile App on Urinary Sodium Excretion in Patients With Chronic Kidney Disease: Randomized Controlled Trial
Takayuki Kawaoka, Y. Sakaguchi, Tatsufumi Oka, Yohei Doi +5 more
2026JMIR mHealth and uHealth0 citations Open access
Semantic Scholar
Machine Learning-Driven Digital Phenotyping of Accelerometer-Based Physical Activity Patterns and Mortality in Patients on Hemodialysis: The PROMOTE Study
Hikaru Kadono, Y. Sakaguchi, Tatsufumi Oka, Yohei Doi +8 more
2025Journal of the American Society of Nephrology0 citations
Semantic Scholar
A Novel Heterozygous and Pathogenic Variant of the HNF1B Gene Associated with Autosomal Dominant Tubulointerstitial Kidney Disease with a Broad Spectrum of Extrarenal Phenotypes
Jun-Ya Kaimori, Jun Matsuda, Asif Jan, Yuki Kawano +10 more
2025Internal medicine0 citations Open access
Semantic Scholar
Effects of alfacalcidol on cardiovascular outcomes according to alkaline phosphatase levels in the J-DAVID trial
Tatsufumi Oka, Y. Sakaguchi, Y. Isaka, Haruka Ishii +8 more
2022Scientific Reports0 citations Open access
Semantic Scholar
COVID-19 Infection Is a Risk Factor for CKD and Glomerulonephritis
Tatsufumi Oka, Y. Sakaguchi, Koki Hattori, Yuta Asahina +6 more
2022Journal of the American Society of Nephrology0 citations
Semantic Scholar
Cardiovascular Outcomes in the J-DAVID Based on Alkaline Phosphatase: A Post-hoc Analysis of a Randomized Controlled Trial
Tatsufumi Oka, Y. Sakaguchi, Y. Isaka, Haruka Ishii +8 more
20220 citations Open access
Semantic Scholar

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Y. Sakaguchi×36
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Y. Sakaguchi — researcher profile on SciRah
Y. Isaka×33
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T. Hamano×21
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I. Matsui×21
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Nobuhiro Hashimoto

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