Article
Cell Biology
Taiga Kijima, Daisuke Kurokawa, Yasunori Sasakura, Michio Ogasawara, Satoe Aratake, Kaoru Yoshida, Manabu Yoshida
Summary: This study demonstrates the important role of CatSper in sperm motility in ascidians and mammals, participating in spermatogenesis and basic motility mechanisms.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Kogiku Shiba, Kazuo Inaba
Summary: Spermatozoa can sense and respond to environmental signals to ensure successful fertilization. In the ascidian Ciona intestinalis, CNG channels play a vital role in regulating sperm motility and intracellular calcium regulation during chemotaxis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Kogiku Shiba, Kazuo Inaba
Summary: Flagellar motility in sperm is activated and regulated by factors related to the eggs at fertilization. In this study, the researchers focused on the role of soluble adenylyl cyclase (sAC) in the regulation of flagellar motility in Ciona sperm chemotaxis. The results showed that sAC plays a key role in sperm chemotaxis by regulating the clearance of intracellular calcium ions ([Ca2+]i) and modulating Ca2+-dependent flagellar waveform conversion.
Article
Biochemistry & Molecular Biology
Vitaliy Kholodnyy, Borys Dzyuba, Marek Rodina, Hermes Bloomfield-Gadelha, Manabu Yoshida, Jacky Cosson, Sergii Boryshpolets
Summary: The fertilization of freshwater fish can be negatively affected by environmental factors, with egg and ovarian fluid playing a significant role in triggering gamete encounters. The ovarian fluid of rainbow trout affects sperm performance by inducing a chemotaxis-like effect on activated male gametes, creating an optimal environment for sperm performance. The individual interaction between egg (ovarian fluid) and sperm reflects specific features of the spawning process in this species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Biochemistry & Molecular Biology
Noburu Sensui, Yosinori Itoh, Nobuhiko Okura, Kogiku Shiba, Shoji A. Baba, Kazuo Inaba, Manabu Yoshida
Summary: In Phlebobranchiata ascidians, the acidic conditions in the gonoductal fluids keep the gametes infertile, especially the eggs, and the release of eggs into seawater upon spawning induces an increase in ambient pH, which enables egg fertilization. Pre-incubation of gonoductal eggs at pH 8.2 prior to insemination increases fertilization rates, even under low pH conditions. An increase in ambient pH triggers the release of sperm attractants from the egg and is necessary for sperm chemotaxis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Andrology
Kinga Domrazek, Ilona Kaszak, Szymon Kanafa, Mariusz Sacharczuk, Piotr Jurka
Summary: Mycoplasma spp. are difficult to detect bacteria, and PCR is the most effective diagnostic tool for detecting them. However, there is a lack of information about the pathogenicity and prevalence of different species. The impact of Mycoplasma on human and canine fertility is still controversial, but it is more common in dogs. Canine and human Mycoplasma are phylogenetically related and some species cluster together.
ASIAN JOURNAL OF ANDROLOGY
(2023)
Article
Evolutionary Biology
Jumpei Ikenaga, Satoe Aratake, Kaoru Yoshida, Manabu Yoshida
Summary: Sperm chemotaxis, an important process in fertilization, involves the attraction of sperms to conspecific eggs via species-specific attractants. This study identifies the plasma membrane-type Ca2+/ATPase (PMCA) as the receptor for the sperm-activating and -attracting factor (SAAF) in the ascidian Ciona intestinalis. The researchers found that PMCA recognizes the species-specific structure of SAAF and its testis-specific C-terminal region is involved in the activation and chemotaxis of ascidian sperms.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION
(2022)
Article
Environmental Sciences
Lina Xiao, Qiling Wang, Haobo Ni, Ting Xu, Qinghui Zeng, Xiaolin Yu, Haisheng Wu, Pi Guo, Qingying Zhang, Xinzong Zhang
Summary: This study investigated the association between ambient temperature variability exposure and sperm quality. The results showed that exposure to temperature variability was significantly associated with a decline in sperm counts, particularly during the early stages of sperm development. However, no significant association was found between temperature variability and sperm motility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Biochemistry & Molecular Biology
Ana Sanchez-Rodriguez, Ester Sansegundo, Maximiliano Tourmente, Eduardo R. S. Roldan
Summary: Viscosity affects sperm ATP levels and kinematics during capacitation in vitro, with different responses observed in different mouse species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Mathematics, Applied
Shuyan Qiu, Chunlai Mu, Xinyu Tu
Summary: This paper examines a two-species chemotaxis-consumption system involving nonlinear diffusion and chemotaxis in a smooth bounded domain in 2D and 3D space. It is shown that the corresponding initial-boundary value problem has a unique global bounded classical solution for sufficiently large values of mu(1), mu(2). The paper also establishes asymptotic stabilization of solutions to the system, with convergence properties dependent on the parameters a(1), a(2).
NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS
(2021)
Article
Environmental Sciences
Susanna Lopez-Legentil, Satheesh Kumar Palanisamy, Kirsty F. Smith, Grace McCormack, Patrick M. Erwin
Summary: Ascidians, or sea squirts, are among the marine species with the highest number of introduced species globally. This study sequenced a fragment of the 16S ribosomal RNA gene to investigate symbiont diversity and host specificity in different species of ascidians. The results showed that the composition of prokaryotic symbionts was strongly influenced by both host species and location. Additionally, location had a greater impact on inter-specific differences compared to intra-specific differences. Further research is needed to understand the coevolutionary patterns between hosts and microbes and the role of microbes in facilitating host establishment in different habitats.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Agriculture, Dairy & Animal Science
Gerhard van der Horst
Summary: Quantitative evaluation of sperm quality using modern technologies such as computer-aided sperm analysis is crucial in understanding sperm functionality and assisting in the propagation of wildlife species.
Article
Fisheries
Vitaliy Kholodnyy, Kiko Shibata, Atife Tuba Beken, Borys Dzyuba, Hermes Bloomfield-Gadelha, Jacky Cosson, Sergii Boryshpolets
Summary: During evolution, fish have adopted diverse spawning tactics to effectively utilize sperm competition and prevent the fertilization of inappropriate male gametes. This study observed that common carps exhibit different spawning behavior compared to salmonids, and the presence of ovarian fluid (OF) altered the motility pattern and velocity of carp spermatozoa. The chemotactic test showed that carp spermatozoa responded significantly to OF, and this attraction phenomenon depended on the presence of external calcium ions. These findings highlight the significant impact of environmental conditions, particularly the presence of OF, on the performance of male gametes in common carp, aligning with their specific spawning behavior.
Article
Biochemical Research Methods
Steffen Lange, Benjamin M. Friedrich
Summary: Marine invertebrate sperm need to find egg cells in the ocean through turbulent mixing and cellular chemotaxis. External flows elongate concentration filaments of signaling molecules, along which sperm cells 'surf' towards the eggs. The theory of chemotactic navigation in external flow provides insights into how cells navigate in complex environments under turbulent conditions.
PLOS COMPUTATIONAL BIOLOGY
(2021)
Review
Genetics & Heredity
Malik Ahsan Ali, Yihan Wang, Ziyue Qin, Xiang Yuan, Yan Zhang, Changjun Zeng
Summary: Sperm chemotaxis, guided by odorant and taste receptors, is crucial for sperm motility and fertility. Investigating the roles of these receptors is important for understanding freeze tolerance mechanisms and improving post-thaw sperm quality.
Meeting Abstract
Biophysics
Hiroki Arima, Hidekazu Tsutsui, Kohei Takeshita, Atsushi Nakagawa, Ayako Sakamoto, Manabu Yoshida, Yasushi Okamura
BIOPHYSICAL JOURNAL
(2016)
Article
Reproductive Biology
V. Gallego, M. Yoshida, D. Kurokawa, J. F. Asturiano, G. J. Fraser
Article
Biochemistry & Molecular Biology
Hiroki Arima, Hidekazu Tsutsui, Ayako Sakamoto, Manabu Yoshida, Yasushi Okamura
BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES
(2018)
Article
Plant Sciences
Tomohiro Watanabe, Hajime Shibata, Makoto Ebine, Hiroshi Tsuchikawa, Nobuaki Matsumori, Michio Murata, Manabu Yoshida, Masaaki Morisawa, Shu Lin, Kosei Yamauchi, Ken Sakai, Tohru Oishi
JOURNAL OF NATURAL PRODUCTS
(2018)
Article
Multidisciplinary Sciences
Kaoru Yoshida, Kogiku Shiba, Ayako Sakamoto, Jumpei Ikenaga, Shigeru Matsunaga, Kazuo Inaba, Manabu Yoshida
SCIENTIFIC REPORTS
(2018)
Article
Zoology
Jumpei Ikenaga, Natsumi Hookabe, Hisanori Kohtsuka, Manabu Yoshida, Hiroshi Kajihara
ZOOLOGICAL SCIENCE
(2019)
Article
Cell Biology
Nana Kinoshita-Terauchi, Kogiku Shiba, Makoto Terauchi, Francisco Romero, Hector Vincente Ramirez-Gomez, Manabu Yoshida, Taizo Motomura, Hiroshi Kawai, Takuya Nishigaki
Article
Biochemistry & Molecular Biology
Miyuki Shindo, Masafumi Inui, Woojin Kang, Moe Tamano, Cai Tingwei, Shuji Takada, Taku Hibino, Manabu Yoshida, Kaoru Yoshida, Hiroshi Okada, Teruaki Iwamoto, Kenji Miyado, Natsuko Kawano
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2019)
Article
Biochemistry & Molecular Biology
Daiki Sakaguchi, Kenji Miyado, Teruaki Iwamoto, Hiroshi Okada, Kaoru Yoshida, Woojin Kang, Miki Suzuki, Manabu Yoshida, Natsuko Kawano
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Article
Zoology
Jumpei Ikenaga, Hiroshi Kajihara, Manabu Yoshida
Summary: The purple color variant corresponds to the true Kulikovia alborostrata, while the brown-yellow variant corresponds to Lineus fulvus. These two species are reproductively isolated from each other by prezygotic mechanisms.
ZOOLOGICAL SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Vitaliy Kholodnyy, Borys Dzyuba, Marek Rodina, Hermes Bloomfield-Gadelha, Manabu Yoshida, Jacky Cosson, Sergii Boryshpolets
Summary: The fertilization of freshwater fish can be negatively affected by environmental factors, with egg and ovarian fluid playing a significant role in triggering gamete encounters. The ovarian fluid of rainbow trout affects sperm performance by inducing a chemotaxis-like effect on activated male gametes, creating an optimal environment for sperm performance. The individual interaction between egg (ovarian fluid) and sperm reflects specific features of the spawning process in this species.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Immunology
Kazunori Morohoshi, Takeo Yamazaki, Keiji Kito, Ban Sato, Woojin Kang, Taku Hibino, Manabu Yoshida, Kaoru Yoshida, Teruaki Iwamoto, Mitsutoshi Yamada, Kenji Miyado, Natsuko Kawano
Summary: In both men and women, pathogenic bacteria can enter the reproductive tract and cause harmful symptoms. Even in the absence of the majority of seminal proteins, antibacterial activity remains in the seminal plasma. Prostate and testis express a novel antibacterial protein, the sequence of which is broadly conserved across mammals.
JOURNAL OF REPRODUCTIVE IMMUNOLOGY
(2021)
Article
Evolutionary Biology
Jumpei Ikenaga, Satoe Aratake, Kaoru Yoshida, Manabu Yoshida
Summary: Sperm chemotaxis, an important process in fertilization, involves the attraction of sperms to conspecific eggs via species-specific attractants. This study identifies the plasma membrane-type Ca2+/ATPase (PMCA) as the receptor for the sperm-activating and -attracting factor (SAAF) in the ascidian Ciona intestinalis. The researchers found that PMCA recognizes the species-specific structure of SAAF and its testis-specific C-terminal region is involved in the activation and chemotaxis of ascidian sperms.
JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION
(2022)
Article
Biochemistry & Molecular Biology
Noburu Sensui, Yosinori Itoh, Nobuhiko Okura, Kogiku Shiba, Shoji A. Baba, Kazuo Inaba, Manabu Yoshida
Summary: In Phlebobranchiata ascidians, the acidic conditions in the gonoductal fluids keep the gametes infertile, especially the eggs, and the release of eggs into seawater upon spawning induces an increase in ambient pH, which enables egg fertilization. Pre-incubation of gonoductal eggs at pH 8.2 prior to insemination increases fertilization rates, even under low pH conditions. An increase in ambient pH triggers the release of sperm attractants from the egg and is necessary for sperm chemotaxis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Developmental Biology
Naoya Araki, Natsuko Kawano, Woojin Kang, Kenji Miyado, Kaoru Yoshida, Manabu Yoshida
