Sassa-O’Brien Y (Corresponding author), Wu CF, Matsunaga S, Ohya K, Fukushi H. (2025) Isolation of “Pigeon-Type” Chlamydia psittaci and Detection of Chlamydia-Related Bacteria in Indian Ring-Necked Parakeets (Psittacula krameri manillensis) in Introduced Flocks in Urban Area of Japan. Vet Microbiol, Accepted. doi.org/10.1016/j.vetmic.2025.110689
Katsuno Y, Kushida K, Kishimoto M, Shibata S, Iseri T, Iwanaga T, Fukushima R, Isayama S, Sun Q, Sassa-O’Brien Y (Corresponding author). (2025) Imaging Evaluation of Structural Changes in the Cisterna Magna Region Associated with Cervical Flexion in Cockatiels. Int J Vet Sci Med, Accepted. doi: 10.1080/23144599.2025.2525666
Sakuta K, Ito A, Sassa-O’Brien Y, Yoshida T, Fukuhara T, Uematsu S, Komatsu K, Moriyama H. (2025) Novel endornaviruses infecting Phytophthora cactorum that attenuate vegetative growth, promote sporangia formation, and confer hypervirulence to the host oomycete. J Gen Virol, 106(5):002099. doi: 10.1099/jgv.0.002099.
Sassa-O'Brien Y, Wu CF, Matsushita Y, Ohya K, Moriyama H, Fukushi H. (2024) Complete genome sequence of Chlamydia psittaci NRM_5 strain isolated from the fecal samples of a wild Indian ring-necked parakeet (Psittacula krameri manillensis) in Japan. Microbiol Resour Announc, 30:e0116923. doi: 10.1128/mra.01169-23.
Sassa-O’Brien Y (Corresponding author), Ohya K, Ikeuchi S, Sanada N, Sanada Y, Kojima A, Yorisaki M, Ebisawa K, Ueda K, Iki H, Mizukami M, Hayashidani H, Fukushi H. (2023) Diversity of Chlamydiales detected in pet birds privately kept in individual homes in Japan. J Vet Med Sci, 85, 907-911. doi: 10.1292/jvms.23-0185
Oronan RB, Sassa-O'Brien Y (Corresponding author), Agad MS, Lopez LLL. (2023) Molecular detection of Chlamydiaceae in captive birds from five animal facilities in the Philippines. Philipp J Vet Med. 60, par-23052023.
Ikeuchi S, Bui TH, Sassa-O’Brien Y, Niwa T, Okumura M, Hara-Kudo Y, Hayashidani H. (2023) Development of detection methods by multiplex real-time PCR for highly pathogenic Yersinia enterocolitica, low pathogenic Yersinia enterocolitica, and Yersinia pseudotuberclosis based on SYBR Green and TaqMan probe. J Microbiol Methods, 211, 106779.
Murakami T, Kaku T, Tsukakoshi K, Kubo R, Ikebukuro K, Nomura K, Sassa-O’Brien Y, Kametani F. (2023) Identification of novel amyloidosis in dogs: a-S1-casein acquires amyloidogenicity in mammary tumor by overexpression and N-terminal truncation. Vet Pathol, 60, 203-213.
オブライエン 悠木子 (責任著者)、渡辺 麻衣子、池内 隼佑、Tran Vu Linh、Bui Thi Hien、林谷秀樹（2023）「本邦で市販される愛玩鳥の餌における真菌汚染の状況」日本獣医師会雑誌、76, e51-54.
Sassa-O’Brien Y, Ohya K, Yasuda-Koga S, Chahota R, Suganuma S, Inoue-Murayama M, Fukushi H, Kayang B, Owusu EH, Takashima Y. (2022) Chlamydial species among wild birds and livestock in the foothills of Mt.Afadjato Ghana. J Vet Med Sci, 84, 817-823.
Hosokawa-Muto J, Sassa-O’Brien Y, Fujinami Y, Nakahara H. (2022) Analysis comparison for rapid identification of pathogenic virus from infected tissue samples. Diagnostics, 12 (1): 196. Doi: 10.3390/diagnostics12010196
Bui TH, Ikeuchi S, Sassa-O’Brien Y, Niwa T, Hara-Kudo Y, Taniguchi T, Hayashidani H.（2021） Multiplex PCR method differentiating high pathogenic Yersinia enterocolitica and low pathogenic Yersinia enterocolitica, and Yersinia pseudotuberculosis. J Vet Med Sci, 83, 1982-1987.
Iwaide S, Sassa Y, Murakami T. (2021) Species-barrier on the cross-species oral transmission of bovine AA amyloidosis in mice. J Vet Med Sci, 83, 962-967.
Komorizono R, Sassa Y, Horie M, Makino A, Tomonaga K. (2020) Evolutionary selection of the nuclear localization signal in the viral nucleoprotein leads to host adaptation of the genus Orthobornavirus. Viruses, 12, 1291.
Murakami T, Noguchi K, Hachiya N, Kametani F, Tasaki M, Nakaba S, Sassa Y, Yamashita T, Obayashi K, Ando Y, Hamamura M, Kanno T, Kawasako K. (2020) Needle-shaped amyloid in rat mammary gland: evidence of a novel amyloid fibril protein. Amyloid. 2020, 27, 25-35.
Hosokawa-Muto J, Sakai H, Sassa Y, Fujinami Y, Kishimoto M, Nakahara H. (2019) Rapid detection of pathogenic virus genome sequence from throat and nasal swab samples using an exhaustive gene amplification method. Forensic Sci Med Pathol, 15, 399-403.
Hamada K, Takagi S, Kuboshima H, Shimada H, Takagi K, Yasuoka T, Matsubara K, Sassa Y, Furuya T, Suzuki K, Uchide T, Mizutani T, Tani K, Ito H, Sugiyama T. (2019) Cloning of carrier cells infected with oncolytic adenovirus driven by midkine promoter and biosafety studies. J Gene Med, 21: e3064
Murakami T, Sassa Y .(Corresponding author). (2018) Pleomorphic Malignant Mesothelioma in a Broiler Breeder Infected with Avian Leucosis Virus Subgroup J. J Comp Pathol, 160, 50-55.
Horie M, Sassa Y (Corresponding author) , Iki H, Ebisawa K, Fukushi H, Yanai T, Tomonaga K. (2016) Isolation of avian bornaviruses from psittacine birds using QT6 quail cells in Japan. J Vet Med Sci, 78, 305-308.
Furuya T, Wachi A, Sassa Y, Omatsu T, Nagai M, Fukushima R, Shibutani M, Yamaguchi T, Uematsu Y, Shirota K, Mizutani T. (2016) Quantitative PCR detection of feline morbillivirus in cat urine samples. J Vet Med Sci, 77, 1701-1703.
Sassa Y (Corresponding author), Bui VN, Saitoh K, Watanabe Y, Koyama S, Endoh D, Horie M, Tomonaga K, Furuya T, Nagai M, Omatsu T, Imai K, Ogawa H, Mizutani T. (2015) Parrot bornavirus-2 and -4 RNA detected in wild bird samples in Japan are phylogenetically adjacent to those found in pet birds in Japan. Virus Genes 51, 234-243.
Sano K, Okazaki S, Taniguchi S, Masangkay JS, Puentespina R Jr, Eres E, Cosico E, Quibod N, Kondo T, Shimoda H, Hatta Y, Mitomo S, Oba M, Katayama Y, Sassa Y, Furuya T, Nagai M, Une Y, Maeda K, Kyuwa S, Yoshikawa Y, Akashi H, Omatsu T, Mizutani T. (2015) Detection of a novel herpesvirus from bats in the Philippines. Virus Genes, 51, 136-139.
Koyama S, Urayama S, Ohmatsu T, Sassa Y, Sakai C, Takata M, Hayashi S, Nagai M, Furuya T, Moriyama H, Satoh T, Ono S, Mizutani T. (2015) Identification, characterization and full-length sequence analysis of a novel dsRNA virus isolated from the arboreal ant Camponotus yamaokai. J Gen Virol, 96(Pt 7), 1930-1937.
Omatsu T, Tsuchiaka S, Hirata T, Shiroma Y, Okazaki S, Katayama Y, Oba M, Nishiura N, Sassa Y, Furuya T, Nagai M, Ochiai H, Tamaki S, Mizutani T. (2014) Detection of enterovirus genome sequence from diarrheal feces of goat. Virus Genes 48, 550-552.
Masuda T, Nagai M, Yamasato H, Tsuchiaka S, Okazaki S, Katayama Y, Oba M, Nishiura N, Sassa Y, Omatsu T, Furuya T, Koyama S, Shirai J, Taniguchi K, Fujii Y, Todaka R, Katayama K, Mizutani T. (2014) Identification of novel bovine group A rotavirus G15P[14] strain from epizootic diarrhea of adult cows by de novo sequencing using a next-generation sequencer. Vet Micro, 171, 66-73.
Furuya T, Sassa Y, Omatsu T, Nagai M, Fukushima R, Shibutani M, Yamaguchi T, Uematsu Y, Shirota K, Mizutani T. (2014) Existence of feline morbillivirus infection in Japanese cat populations. Arch Virol, 159, 371-373.
谷口美保,大場真己,岡崎祥子,大松勉,手島有平,椎名修,金城輝雄,安座間健也,島袋洋次,普久原学,仲本開,曽地千尋,吉栁善弘,三宅一平,藤野正和,正藤陽久,飯田伸弥,篠原久,大内勇,高原和之,木村聡志,中本旅人,西浦直美,土赤忍,片山幸枝,佐々悠木子,長井誠,古谷哲也,川上茂久,水谷哲也. (2014)日本の動物園で飼育されているゾウのゾウヘルペスウイルス1型感染状況について, 日本動物園水族館雑誌, 55:41-44.
Minami-Fukuda F, Nagai M, Takai H, Murakami T, Ozawa T, Tsuchiaka S, Okazaki S, Katayama Y, Oba M, Nishiura N, Sassa Y, Omatsu T, Furuya T, Koyama S, Shirai J, Tsunemitsu H, Fujii Y, Katayama K, Mizutani T. (2013) Detection of bovine group a rotavirus using rapid antigen detection kits, rt-PCR and next-generation DNA sequencing. J Vet Med Sci 75,1651-1655.
Sassa Y, Horie M, Fujino K, Nishiura N, Okazaki S, Furuya T, Nagai M, Omatsu T, Kojima A, Mizugami M, Ueda K, Iki H, Ebisawa K, Tomonaga K, Mizutani T. (2013) Molecular epidemiology of avian bornavirus from pet birds in Japan. Virus genes 47, 173-177.
Sassa Y, Yamamoto H, Mochizuki M, Umemura T, Horiuchi M, Ishiguro N, Miyazawa T. (2011) Successive deaths of a captive snow leopard (Uncia uncia) and a serval (Leptailurus serval) by infection with feline panleukopenia virus at Sapporo Maruyama Zoo. J Vet Med Sci, 73, 491-494.
Sassa Y, Yamasaki T, Horiuchi M, Inoshima Y, Ishiguro N. (2010) The effects of lysosomal and proteasomal inhibitors on abnormal forms of prion protein degradation in murine macrophages. Microbiol Immunol, 54, 763-768.
Sassa Y, Inoshima Y, Ishiguro N. (2010) Bovine macrophage degradation of scrapie and BSE PrPSc. Vet Immunol Immunopathol, 133, 33-39.
Sassa Y, Kataoka N, Inoshima Y, Ishiguro N. (2010) Anti-PrP antibodies detected at terminal stage of prion-affected mouse. Cell Immunol 263, 212-218.
Ishiguro N, Inoshima Y, Sassa Y, Takahashi T. (2009) Molecular characterization of chicken prion proteins by C-terminal-specific monoclonal antibodies. Vet Immunol Immunopathol, 128, 402-406.
Sassa Y, Fukui D, Takeshi K, Miyazawa T. (2016) Neutralizing antibodies against feline parvoviruses in nondomestic felids inoculated with commercial inactivated polyvalent vaccines. J Vet Med Sci 68, 1195-1198