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Your search keyword '"Shiho Amagasa"' showing total 2 results
Start Over Author "Shiho Amagasa" Journal journal of biomedical optics
2 results on '"Shiho Amagasa"'

1. Brown adipose tissue density measured by near-infrared time-resolved spectroscopy in Japanese, across a wide age range

Author

Masayuki Saito, Toshiyuki Homma, Sayuri Fuse, Takafumi Hamaoka, Yuko Kurosawa, Shiho Amagasa, Ryotaro Kime, Naoki Sakane, Tasuki Endo, Takeshi Yoneshiro, Shinsuke Nirengi, and Mami Matsushita

Subjects
0301 basic medicine, Adult, Male, medicine.medical_specialty, animal structures, Infrared Rays, Biomedical Engineering, Computed tomography, Biology, Biomaterials, 03 medical and health sciences, Young Adult, Adipose Tissue, Brown, Asian People, Japan, Internal medicine, Brown adipose tissue, medicine, Humans, Visceral fat, Aged, Aged, 80 and over, Spectroscopy, Near-Infrared, medicine.diagnostic_test, Anthropometry, Near-infrared spectroscopy, Middle Aged, Atomic and Molecular Physics, and Optics, Total hemoglobin, Electronic, Optical and Magnetic Materials, 030104 developmental biology, medicine.anatomical_structure, Endocrinology, Tissue optics, Supraclavicular region, Female, BAT activity
Abstract

F18-fluorodeoxyglucose (FDG)–positron emission tomography (PET) along with computed tomography (CT) is a standard method for assessing brown adipose tissue (BAT) activity. We tested the usefulness of near-infrared time-resolved spectroscopy (NIRTRS) as a simple and noninvasive method for evaluating BAT density (BAT-d) by examining the effects of some factors known to influence BAT activity. The total hemoglobin concentration as a parameter of BAT-d was evaluated using NIRTRS in the supraclavicular region in 413 Japanese individuals. The associations were analyzed between BAT-d and sex, age, the percentages of body fat (%BF), visceral fat (VF), and the seasonal ambient temperature (AmT) fluctuations. Age was associated with decreased BAT-d (P

Published
2018

2. Brown adipose tissue density measured by near-infrared time-resolved spectroscopy in Japanese, across a wide age range.

Author

Sayuri Fuse, Shinsuke Nirengi, Shiho Amagasa, Toshiyuki Homma, Ryotaro Kime, Tasuki Endo, Sakane, Naoki, Mami Matsushita, Masayuki Saito, Takeshi Yoneshiro, Yuko Kurosawa, and Takafumi Hamaoka

Subjects
ADIPOSE tissues, POSITRON emission tomography, COMPUTED tomography, FLUORODEOXYGLUCOSE F18, HEMOGLOBINS
Abstract

18F-fluorodeoxyglucose (FDG)–positron emission tomography (PET) along with computed tomography (CT) is a standard method for assessing brown adipose tissue (BAT) activity. We tested the usefulness of near-infrared time-resolved spectroscopy (NIRTRS) as a simple and noninvasive method for evaluating BAT density (BAT-d) by examining the effects of some factors known to influence BAT activity. The total hemoglobin concentration as a parameter of BAT-d was evaluated using NIRTRS in the supraclavicular region in 413 Japanese individuals. The associations were analyzed between BAT-d and sex, age, the percentages of body fat (%BF), visceral fat (VF), and the seasonal ambient temperature (AmT) fluctuations. Age was associated with decreased BAT-d (P < 0.05). There was no sex difference in the BAT-d, except for those in their twenties. Multivariate analyses revealed that %BF and VF were correlated with BAT-d, and the lower AmT (around 4°C or 5°C) for 4 and 6 weeks prior to the measurement day was associated with an increase in the BAT-d. Our NIRTRS results were analogous to those reported with 18FDG-PET∕CT, indicating the usefulness of NIRTRS. BAT-d might increase during the 4 and 6 weeks after the AmT decreases to lower than 4°C or 5°C. [ABSTRACT FROM AUTHOR]

Published
2018
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