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现代生物医学进展 2017年第6期17卷 I0002-I0002页

作者： Hiromasa Funato, Chika Miyoshi, Tomoyuki Fujiyama, Takeshi Kanda, Makito Sato, Zhiqiang Wang, Jing Ma, Aya Ikkyu, Miyo Kakizaki, Noriko Hotta-Hirashima, Satomi Kanno, Haruna Komiya, Fuyuki Asano, Takato Honda, Staci J. Kim, Kanako Harano, Hiroki Muramoto, Toshiya Yonezawa, Shinichi Miyazaki, Linzi Connor, Yu Hayashi, Qinghua Liu, Joseph S. Takahashi Masashi Yanagisawa Hiromasa Funato Makito Sato Masashi Yanagisawa Shin Nakane, Jun Tomita Kazuhiko Kume Seiya Mizuno, Fumihiro Sugiyama Satoru Takahashi Vivek Kumar Joseph S. Takahashi Vivek Kumar ikuo miura, tomohiro suzuki Shigeharu Wakana Atsushi Watanabe Manabu Abe Kenji Sakimura Yu Hayashi Qinghua Liu Joseph S. Takahashi Masashi Yanagisawa Masashi Yanagisawa International Institute for Integrative Sleep Medicine (WPI-IIIS) University of Tsukuba Tsukuba Ibaraki 305-8575 Japan Department of Anatomy Faculty of Medicine Toho University Ota-ku Tokyo 143-8540 Japan Department of Molecular Genetics University of Texas Southwestern Medical Center Dallas Texas 75390 USA Department of Neuropharmacology Graduate School of Pharmaceutical Sciences Nagoya City University Nagoya Aichi 467-8603 Japan Laboratory Animal Resource Center University of Tsukuba Tsukuba Ibaraki 305-8575 Japan Department of Neuroscience University of Texas Southwestern Medical Center Dallas Texas 75390 USA The Jackson Laboratory Bar Harbor Maine 04609 USA Technology and Development Team for Mouse Phenotype Analysis RIKEN Bioresource Center Tsukuba Ibaraki 305-0074 Japan Laboratory of Research Advancement National Center for Geriatrics and Gerontology Obu Aichi 474-8511 Japan Department of Cellular Neurobiology Brain Research Institute Niigata University Niigata 951-8585 Japan PRESTO Japan Science and Technology Agency Kawaguchi Saitama 332-0012 Japan Department of Biochemistry University of Texas Southwestern Medical Center Dallas Texas 75390 USA Howard Hughes Medical Institute University of Texas Southwestern Medical Center Dallas Texas 75390 USA Life Science Center Tsukuba Advanced Research Alliance University of Tsukuba Tsukuba Ibaraki 305-8575 Japan

近日，刊登在国际杂志Nature上的一项研究报告中，来自西南医学中心等机构的研究人员通过研究鉴别出了两个关键的核心基因，这两个基因能够帮助调节机体深度睡眠和做梦的水平，相关研究或为阐明相关的基因控制睡眠的网络提供新的线索。... 详细信息

近日，刊登在国际杂志Nature上的一项研究报告中，来自西南医学中心等机构的研究人员通过研究鉴别出了两个关键的核心基因，这两个基因能够帮助调节机体深度睡眠和做梦的水平，相关研究或为阐明相关的基因控制睡眠的网络提供新的线索。此前研究者通过对小鼠进行研究发现了能够控制机体快速眼动睡眠的基因，同时该基因还能够诱导深度睡眠。而第二个基因能够控制机体对快速眼动睡眠的需求量，相关研究为科学家们提供了一个关键的切入点来帮助解释睡眠工作的机制，同时研究者还鉴别出了治疗睡眠障碍的潜在靶点。

关键词：睡眠障碍核心基因科学家机体鉴别基因控制研究人员需求量

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Intramanchette transport during primate spermiogenesis： expression of dynein, myosin Va, motor recruiter myosin Va, VIIa-Rab27a/b interacting protein, and Rab27b in the manchette during human and monkey spermiogenesis

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Asian Journal of Andrology 2008年第4期10卷 561-568页

作者： Shinichi Hayasaka Yukihiro Terada Kichiya suzuki Haruo Murakawa ikuo Tachibana Tadashi Sankai Takashi Murakami Nobuo Yaegashi Kunihiro Okamura Department of Obstetrics and Gynecology Tohoku University School of Medicine Sendai Miyagi 980-8574 Japan suzuki Memorial Hospital lwanuma Miyagi 989-2481 Japan Tsukuba Primate Research Center National Institute of Biomedical Innovation Tukuba Ibaraki 305-0843 Japan

Aim： To show whether molecular motor dynein on a microtubule track, molecular motor myosin Va, motor recruiter myosin Va, VIIa-Rab27a/b interacting protein （MyRIP）, and vesicle receptor Rab27b on an F-actin track were present during human and monkey spermiogenesis involving intramanchette transport （IMT）. Methods： Spermiogenic cells were obtained from three men with obstructive azoospermia and normal adult cynomolgus monkey （Macacafascieularis）. Immunocytochemical detection and reverse transcription-polymerase chain reaction （RT-PCR） analysis of the proteins were carried out. Samples were analyzed by light microscope. Results： Using RT-PCR, we found that dynein, myosin Va, MyRIP and Rab27b were expressed in monkey testis. These proteins were localized to the manchette, as shown by immunofluorescence, particularly during human and monkey spermiogenesis. Conclusion： We speculate that during primate spermiogenesis, those proteins that compose microtubule-based and actin-based vesicle transport systems are actually present in the manchette and might possibly be involved in intramanchette transport.

关键词： intramanchette transport manchette spermiogenesis

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Micromolar sodium fluoride mediates anti-osteoclastogenesis in Porphyromonas gingivalis-induced alveolar bone loss

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International Journal of Oral Science 2015年第4期7卷 242-249页

作者： Ujjal K Bhawal Hye-Jin Lee Kazumune Arikawa Michiharu Shimosaka Masatoshi suzuki Toshizo Toyama Takenori Sato Ryota Kawamata Chieko Taguchi Nobushiro Hamada ikuo Nasu Hirohisa Arakawa Koh Shibutani Department of Biochemistry and Molecular Biology Nihon University School of Dentistry at Matsudo Research Institute of Oral Health Nihon University School of Dentistry at Matsudo Department of Oral Health Graduate School of DentistryKanagawa Dental University Department of Dental Hygiene Howon University Department of Preventive and Public Oral Health Nihon University School of Dentistry at Matsudo Department of Anesthesiology Nihon University School of Dentistry at Matsudo Department of Infection Control Division of MicrobiologyKanagawa Dental University Department of Radiopraxis Science Kanagawa Dental University

Osteoclasts are bone-specific multinucleated cells generated by the differentiation of monocyte/macrophage lineage precursors. Regulation of osteoclast differentiation is considered an effective therapeutic approach to the treatment of bone-lytic diseases. Periodontitis is an inflammatory disease characterized by extensive bone resorption. In this study, we investigated the effects of sodium fluoride （NaF） on osteoclastogenesis induced by Porphyromonas gingivalis, an important colonizer of the oral cavity that has been implicated in periodontitis. NaF strongly inhibited the P. gingivalis-induced alveolar bone loss. That effect was accompanied by decreased levels of cathepsin K, interleukin （IL）-1β, matrix metalloproteinase 9 （MMP9）, and tartrate-resistant acid phosphatase, which were up-regulated during P. gingivalis-induced osteoclastogenesis. Consistent with the in vivo anti-osteoclastogenic effect, NaF inhibited osteoclast formation caused by the differentiation factor RANKL （receptor activator of nuclear factor KB ligand） and macrophage colony-stimulating factor （M-CSF）. The RANKL-stimulated induction of the transcription factor nuclear factor of activated T cells （NFAT） cl was also abrogated by NaF. Taken together, our data demonstrate that NaF inhibits RANKL-induced osteoclastogenesis by reducing the induction of NFATcl, ultimately leading to the suppressed expression of cathepsin K and MMP9. The in vivo effect of NaF on the inhibition of P. gingivalis-induced osteoclastogenesis strengthens the potential usefulness of NaF for treating periodontal diseases.

关键词： alveolar bone loss osteoclasts Porphyromonas gingivalis sodium fluoride

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