Hiroshi Ikegaya

Biographic Data

ID4145990
NAMEHiroshi Ikegaya
GIVEN NAMESHiroshi
FAMILY NAMEIkegaya
SIGNATUREIKEGAYA H
AFFILIATIONSThe University of Tokyo
ORCID0000-0002-2380-7558
VERIFIEDYes
TOTAL WORKS8
TOTAL CITATIONS5
AUTHOR COUNT8
EDITOR COUNT0
FIRST PUBLICATION YEAR2005
LATEST PUBLICATION YEAR2023
H-INDEX2

  • Deep Neural Networks-Based Age Estimation of Cadavers Using CT Imaging of Vertebrae

    Open AccessHiroki Kondou, Rina Morohashi et al.ARTICLEInternational Journal of…2023

    Although age estimation upon death is important in the identification of unknown cadavers for forensic scientists, to the best of our knowledge, no study has examined the utility of deep neural network (DNN) models for age estimation among cadavers. We performed a postmortem computed tomography (CT) examination of 1000 and 500 male and female cadavers, respectively. These CT slices were converted into 3-dimensional images, and only the thoracolum…

  • Alcohol abuse as a potential risk factor of solitary death among people living alone

    Open AccessDaisuke Miyamori, Tsukasa Kamitani et al.ARTICLEBMC Public Health2022

    The findings of this study could help identify individuals at higher risk of solitary death. Moreover, calling the attention of people with alcohol abuse may be beneficial to prevent solitary death

  • The Pacific lineage (2E) of JC polyomavirus is prevalent in Sumba Island, Eastern Indonesia

    Open AccessHiroshi Ikegaya, ZHONG SHAN et al.ARTICLEAnthropological Science2008

    Recent studies have identified a Pacific lineage (2E) of JC polyomavirus (also designated as JC virus or JCV) that occurs in both Island Southeast Asia and Oceania, but not in mainland Asia. It has been postulated that this lineage traveled with Austronesian-speaking people who are now spread throughout Island Southeast Asia and Oceania (excluding Australia and inland and southern New Guinea). However, to date, the 2E lineage has been identified …

  • JC polyomavirus lineages common among Kiribati Islanders

    Open AccessTomokazu Takasaka, Nobutaka Ohta et al.ARTICLEAnthropological Science2006

    Although JC polyomavirus (JCPyV) genotyping is a promising method in clarifying the peopling of the Pacific, the distribution of JCPyV lineages has been elucidated only in a few Pacific populations. To clarify JCPyV lineages of the Kiribati Islanders, we collected urine samples from 48 Kiribati fishermen (mainly from the Gilbert Islands), who called in at a Japanese port for unloading. From the urine samples, we amplified the 610-bp IG region (VT…

  • Dispersal of southeastern Asians based on a global phylogenetic analysis of JC polyomavirus isolates of genotype SC

    Open AccessLei Saruwatari, Huai-Ying Zheng et al.ARTICLEAnthropological Science2006

    The SC genotype of the JC polyomavirus is the key to understanding the origin and dispersal of southeastern Asians. We performed a phylogenetic analysis based on complete DNA sequences of 24 SC isolates worldwide, including 11 in China, three in Vietnam, two in Malaysia, two in Myanmar, one in Indonesia, two in Mauritius, one in Zambia, one in South Africa, and one in Hawaii, USA. The results suggest that although SC isolates worldwide can be cla…

  • Genetic diversity of JC virus in the Saami and the Finns

    Open AccessHiroshi Ikegaya, Huai-Ying Zheng et al.ARTICLEAmerican Journal of Physical…2005References: 52

    The JC virus (JCV) genotyping method was used to gain insights into the population history of the Saami and the Finns, both speaking Finno‐Ugric languages and living in close geographic proximity. Urine samples from Saami and Finns, collected in northern and southern Finland, respectively, were used to amplify a 610‐bp JCV‐DNA region containing abundant type‐specific mutations. Based on restriction site polymorphisms in the amplified fragments, w…

  • Two distinct genotypes (MY-x and MX) of JC virus previously identified in Hokkaido Ainu

    Open AccessHuai-Ying Zheng, Hiroshi Ikegaya et al.ARTICLEAnthropological Science2005Cited by: 3References: 10

    Genotyping the urinary JC virus (JCV) DNA is a useful means to gain new insights into the origin of ethnic groups. We recently detected thirteen JCV isolates from the Ainu, an indigenous population living on Japan’s northernmost island (Hokkaido). Based on phylogenetic analysis, these isolates were classified into five genotypes: two (MX and MY-x) were first identified in the Ainu, two (EU-a/Arc and EU-c) are prevalent in northeastern Siberians a…

  • JC virus genotyping suggests a close contact or affinity between Greenland Inuit and other circumarctic populations

    Open AccessHuai-Ying Zheng, Kazuo Kojima et al.ARTICLEAnthropological Science2005Cited by: 2

    We used the JC virus genotyping method to investigate the origins of Greenland Inuits. Using polymerase chain reaction, we detected six JC virus isolates in urine samples collected from Inuits in northwestern and southeastern Greenland. Phylogenetic analysis of the complete and partial DNA sequences of these isolates demonstrated that all isolates belonged to the EU-a1/Arc cluster previously identified in native northeastern Siberians (e.g. Chukc…