鎌田 浩史 (カマタ ヒロフミ)

Kamata, Hirofumi

写真a

所属(所属キャンパス)

医学部 (信濃町)

職名

特任講師(有期)

学歴 【 表示 / 非表示

  • 2003年

    慶應義塾大学, 医学部

学位 【 表示 / 非表示

  • 博士(医学), 慶應義塾大学, 2011年

 

論文 【 表示 / 非表示

  • The whole blood transcriptional regulation landscape in 465 COVID-19 infected samples from Japan COVID-19 Task Force

    Wang Q.S., Edahiro R., Namkoong H., Hasegawa T., Shirai Y., Sonehara K., Tanaka H., Lee H., Saiki R., Hyugaji T., Shimizu E., Katayama K., Kanai M., Naito T., Sasa N., Yamamoto K., Kato Y., Morita T., Takahashi K., Harada N., Naito T., Hiki M., Matsushita Y., Takagi H., Ichikawa M., Nakamura A., Harada S., Sandhu Y., Kabata H., Masaki K., Kamata H., Ikemura S., Chubachi S., Okamori S., Terai H., Morita A., Asakura T., Sasaki J., Morisaki H., Uwamino Y., Nanki K., Uchida S., Uno S., Nishimura T., Ishiguro T., Isono T., Shibata S., Matsui Y., Hosoda C., Takano K., Nishida T., Kobayashi Y., Takaku Y., Takayanagi N., Ueda S., Tada A., Miyawaki M., Yamamoto M., Yoshida E., Hayashi R., Nagasaka T., Arai S., Kaneko Y., Sasaki K., Tagaya E., Kawana M., Arimura K., Takahashi K., Anzai T., Ito S., Endo A., Uchimura Y., Miyazaki Y., Honda T., Tateishi T., Tohda S., Ichimura N., Sonobe K., Sassa C.T., Nakajima J., Nakano Y., Nakajima Y., Anan R., Arai R., Kurihara Y., Harada Y., Nishio K., Ueda T., Azuma M., Saito R., Sado T., Miyazaki Y., Sato R., Haruta Y., Nagasaki T., Yasui Y., Hasegawa Y., Mutoh Y., Kimura T., Sato T.

    Nature Communications (Nature Communications)  13 ( 1 ) 4830 2022年12月

     概要を見る

    Coronavirus disease 2019 (COVID-19) is a recently-emerged infectious disease that has caused millions of deaths, where comprehensive understanding of disease mechanisms is still unestablished. In particular, studies of gene expression dynamics and regulation landscape in COVID-19 infected individuals are limited. Here, we report on a thorough analysis of whole blood RNA-seq data from 465 genotyped samples from the Japan COVID-19 Task Force, including 359 severe and 106 non-severe COVID-19 cases. We discover 1169 putative causal expression quantitative trait loci (eQTLs) including 34 possible colocalizations with biobank fine-mapping results of hematopoietic traits in a Japanese population, 1549 putative causal splice QTLs (sQTLs; e.g. two independent sQTLs at TOR1AIP1), as well as biologically interpretable trans-eQTL examples (e.g., REST and STING1), all fine-mapped at single variant resolution. We perform differential gene expression analysis to elucidate 198 genes with increased expression in severe COVID-19 cases and enriched for innate immune-related functions. Finally, we evaluate the limited but non-zero effect of COVID-19 phenotype on eQTL discovery, and highlight the presence of COVID-19 severity-interaction eQTLs (ieQTLs; e.g., CLEC4C and MYBL2). Our study provides a comprehensive catalog of whole blood regulatory variants in Japanese, as well as a reference for transcriptional landscapes in response to COVID-19 infection.

  • Clinical clustering with prognostic implications in Japanese COVID-19 patients: report from Japan COVID-19 Task Force, a nation-wide consortium to investigate COVID-19 host genetics

    Otake S., Chubachi S., Namkoong H., Nakagawara K., Tanaka H., Lee H., Morita A., Fukushima T., Watase M., Kusumoto T., Masaki K., Kamata H., Ishii M., Hasegawa N., Harada N., Ueda T., Ueda S., Ishiguro T., Arimura K., Saito F., Yoshiyama T., Nakano Y., Mutoh Y., Suzuki Y., Murakami K., Okada Y., Koike R., Kitagawa Y., Kimura A., Imoto S., Miyano S., Ogawa S., Kanai T., Fukunaga K.

    BMC infectious diseases (BMC infectious diseases)  22 ( 1 ) 735 2022年09月

     概要を見る

    BACKGROUND: The clinical course of coronavirus disease (COVID-19) is diverse, and the usefulness of phenotyping in predicting the severity or prognosis of the disease has been demonstrated overseas. This study aimed to investigate clinically meaningful phenotypes in Japanese COVID-19 patients using cluster analysis. METHODS: From April 2020 to May 2021, data from inpatients aged ≥ 18 years diagnosed with COVID-19 and who agreed to participate in the study were collected. A total of 1322 Japanese patients were included. Hierarchical cluster analysis was performed using variables reported to be associated with COVID-19 severity or prognosis, namely, age, sex, obesity, smoking history, hypertension, diabetes mellitus, malignancy, chronic obstructive pulmonary disease, hyperuricemia, cardiovascular disease, chronic liver disease, and chronic kidney disease. RESULTS: Participants were divided into four clusters: Cluster 1, young healthy (n = 266, 20.1%); Cluster 2, middle-aged (n = 245, 18.5%); Cluster 3, middle-aged obese (n = 435, 32.9%); and Cluster 4, elderly (n = 376, 28.4%). In Clusters 3 and 4, sore throat, dysosmia, and dysgeusia tended to be less frequent, while shortness of breath was more frequent. Serum lactate dehydrogenase, ferritin, KL-6, D-dimer, and C-reactive protein levels tended to be higher in Clusters 3 and 4. Although Cluster 3 had a similar age as Cluster 2, it tended to have poorer outcomes. Both Clusters 3 and 4 tended to exhibit higher rates of oxygen supplementation, intensive care unit admission, and mechanical ventilation, but the mortality rate tended to be lower in Cluster 3. CONCLUSIONS: We have successfully performed the first phenotyping of COVID-19 patients in Japan, which is clinically useful in predicting important outcomes, despite the simplicity of the cluster analysis method that does not use complex variables.

  • Effects of mild obesity on outcomes in Japanese patients with COVID-19: a nationwide consortium to investigate COVID-19 host genetics.

    Lee H, Chubachi S, Namkoong H, Tanaka H, Otake S, Nakagawara K, Morita A, Fukushima T, Watase M, Kusumoto T, Masaki K, Kamata H, Ishii M, Hasegawa N, Harada N, Ueda T, Ueda S, Ishiguro T, Arimura K, Saito F, Yoshiyama T, Nakano Y, Mutoh Y, Suzuki Y, Murakami K, Okada Y, Koike R, Kitagawa Y, Kimura A, Imoto S, Miyano S, Ogawa S, Kanai T, Fukunaga K, Japan COVID-19 Task Force.

    Nutrition & diabetes (Nutrition & diabetes)  12 ( 1 ) 38 2022年08月

     概要を見る

    BACKGROUND: Obesity is reported to be a risk factor for severe disease in patients with coronavirus disease 2019 (COVID-19). However, there are no specific reports on the risk of severe disease according to body mass index (BMI) in Japan. Thus, this study aimed to investigate the effect of obesity stratified by BMI on the severity of COVID-19 in the general Japanese population. METHODS: From February 2020 to May 2021, 1 837 patients aged ≥18 years were enrolled in the Japan COVID-19 Task Force. Patients with known BMI and disease severity were analyzed. Severity was defined as critical if the patient was treated in the intensive care unit, required invasive mechanical ventilation, or died. RESULTS: Class 1 obesity (25.0 ≤ BMI < 30.0 kg/m2), class 2 obesity (30.0 ≤ BMI < 35.0 kg/m2), and class 3 or 4 obesity (BMI ≥ 35 kg/m2) were present in 29%, 8%, and 3% of the cases, respectively. Multiple logistic regression analysis with known risk factors for critical illness indicated that class 2 obesity was an independent risk factor for oxygenation (adjusted odds ratio, 4.75) and critical cases (adjusted odds ratio, 1.81). Class 1 obesity and class 3 or 4 obesity were independent risk factors for oxygen administration (adjusted odds ratios 2.01 and 3.12, respectively), but not for critical cases. However, no differences in the mortality rates were observed between the BMI classes (P = 0.5104). CONCLUSION: Obesity is a risk factor for respiratory failure in Japanese patients with COVID-19, regardless of the degree of obesity. However, it may not cause severe COVID-19 in a dose-response relationship with BMI. COVID-19 patients with mild obesity may benefit from aggressive intensive care.

  • U-shaped association between abnormal serum uric acid levels and COVID-19 severity: Reports from the Japan COVID-19 Task Force.

    Fukushima T, Chubachi S, Namkoong H, Otake S, Nakagawara K, Tanaka H, Lee H, Morita A, Watase M, Kusumoto T, Masaki K, Kamata H, Ishii M, Hasegawa N, Harada N, Ueda T, Ueda S, Ishiguro T, Arimura K, Saito F, Yoshiyama T, Nakano Y, Mutoh Y, Suzuki Y, Murakami K, Okada Y, Koike R, Kitagawa Y, Kimura A, Imoto S, Miyano S, Ogawa S, Kanai T, Fukunaga K, Japan COVID-19 Task Force.

    International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases (International Journal of Infectious Diseases)  122   747 - 754 2022年07月

    ISSN  1201-9712

     概要を見る

    Objectives: This study aimed to identify the relationship between abnormal serum uric acid levels or a history of hyperuricemia and COVID-19 severity in the Japanese population. Methods: We included 1523 patients enrolled in the Japan COVID-19 Task Force cohort between February 2020 and May 2021. We compared the clinical characteristics, including co-morbidities, laboratory findings, and outcomes, particularly invasive mechanical ventilation (IMV), among patients with and without abnormal uric acid levels or a history of hyperuricemia. Results: Patients with high serum uric acid levels were older and had higher body weight and body mass index than those without. In addition, the multiple logistic regression analysis revealed a significant association between high serum uric acid levels or a history of hyperuricemia and an increased risk of IMV (odds ratio [OR] = 1.77; P = 0.03/OR = 1.56; P = 0.04). Moreover, patients with low uric acid levels on admission were also associated significantly with the requirement of IMV (OR = 5.09; P <0.0001). Conclusion: Abnormal serum uric acid levels or a history of hyperuricemia were significantly associated with COVID-19 severity in the Japanese cohort.

  • Osteoporosis in nontuberculous mycobacterial pulmonary disease: a cross-sectional study.

    Tanaka H, Asakura T, Suzuki S, Okamori S, Kusumoto T, Ogawa T, Uno S, Morita A, Lee H, Namkoong H, Kamata H, Sato Y, Uwamino Y, Nishimura T, Ishii M, Fukunaga K, Hasegawa N

    BMC pulmonary medicine (BMC Pulmonary Medicine)  22 ( 1 ) 202 2022年05月

     概要を見る

    Background: Since nontuberculous mycobacterial pulmonary disease (NTM-PD) is common in middle-aged/elderly slender women at risk of osteoporosis, we hypothesized that NTM-PD could be associated with osteoporosis. The study aimed to evaluate the prevalence of osteoporosis in patients with NTM-PD compared with that in the general population and determine the factors associated with osteoporosis in the subjects, including the serum estradiol (E2) and 25-hydroxyvitamin D (25OHD) levels. Methods: We have recruited 228 consecutive adult patients with NTM-PD from a prospective cohort study at the Keio University Hospital, who had no history of osteoporosis or osteoporosis-associated bone fracture but underwent dual-energy X-ray absorptiometry-based bone mineral density (BMD) evaluation from August 2017–September 2019. The E2 and 25OHD levels were measured in 165 patients with available stored serum samples. We performed multivariable logistic regression analyses for osteopenia and osteoporosis. Results: Osteoporosis (T-score ≤ − 2.5) and osteopenia (T-score − 1 to − 2.5) were diagnosed in 35.1% and 36.8% of patients with NTM-PD, respectively. Compared with the general population, the proportion of osteoporosis was significantly higher in 50–59-, 60–69-, and 70–79-year-old women with NTM-PD. Multivariable analysis revealed that older age (adjusted odds ratio [aOR] for 1-year increase = 1.12; 95% confidence interval [CI] = 1.07–1.18), female sex (aOR = 36.3; 95% CI = 7.57–174), lower BMI (aOR for 1 kg/m2 decrease = 1.37; 95% CI = 1.14–1.65), and chronic Pseudomonas aeruginosa (PA) infection (aOR = 6.70; 95% CI = 1.07–41.8) were independently associated with osteoporosis. Additionally, multivariable analysis in 165 patients whose serum E2 and 25OHD levels were measured showed that both low E2 levels (< 10 pg/mL) and lower 25OHD levels were independently associated with osteoporosis. Conclusions: Middle-aged/elderly women with NTM-PD have a higher prevalence of osteoporosis than the general population. BMD screening should be considered in NTM-PD, especially in older females with severe diseases such as chronic PA infection and lower BMI, and low serum E2 and 25OHD levels.

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KOARA(リポジトリ)収録論文等 【 表示 / 非表示

総説・解説等 【 表示 / 非表示

競争的研究費の研究課題 【 表示 / 非表示

  • 肺炎球菌性肺炎においてSectm1aが好中球の肺への集積に及ぼす影響と機序の解明

    2020年04月
    -
    2023年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 鎌田 浩史, 基盤研究(C), 補助金,  研究代表者

  • 肺炎球菌性肺炎においてSectm1aが肺の感染免疫機構へ及ぼす作用の解明

    2018年04月
    -
    2020年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 鎌田 浩史, 若手研究, 補助金,  研究代表者

  • 肺炎球菌性肺炎における気道上皮由来の新規サイトカインの生体防御への寄与

    2016年04月
    -
    2018年03月

    文部科学省・日本学術振興会, 科学研究費助成事業, 鎌田 浩史, 若手研究(B), 補助金,  研究代表者

 

担当授業科目 【 表示 / 非表示

  • 内科学(呼吸器)講義

    2022年度

  • 臨床実習入門

    2022年度

  • 診断学実習

    2022年度

  • 内科学(呼吸器)講義

    2021年度

  • 臨床実習入門

    2021年度

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