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  1. Article: Female Preference for Males Varies with Resource Availability for Reproduction in the Freshwater Goby

    Takahashi, Daisuke

    Zoological science

    2022  Volume 39, Issue 6, Page(s) 507–513

    Abstract: Animals with resource-based breeding systems show varying sexual selection modes driven by resource availability. Males of the freshwater ... ...

    Abstract Animals with resource-based breeding systems show varying sexual selection modes driven by resource availability. Males of the freshwater goby
    Language English
    Publishing date 2022-08-04
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2038883-4
    ISSN 2212-3830 ; 0289-0003
    ISSN (online) 2212-3830
    ISSN 0289-0003
    DOI 10.2108/zs210100
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Total Synthesis of Mannosylerythritol Lipids and Structure-Function Relationship Studies.

    Takahashi, Daisuke / Toshima, Kazunobu

    Journal of oleo science

    2024  Volume 73, Issue 4, Page(s) 539–546

    Abstract: Mannosylerythritol lipid (MEL) has attracted much attention as an environmentally benign and biocompatible material in many research fields due to its significant biochemical and physiological properties. However, heterogeneity always exists in MEL ... ...

    Abstract Mannosylerythritol lipid (MEL) has attracted much attention as an environmentally benign and biocompatible material in many research fields due to its significant biochemical and physiological properties. However, heterogeneity always exists in MEL obtained from microbial products with respect to the chain length of the fatty acids. In this context, the total synthesis of the 20 members of MEL was effectively and stereoselectively achieved using our boron-mediated aglycon delivery (BMAD) method. In addition, structure-function relationship (SFR) studies of antibacterial activity, self-assembling properties, and recovery effects on damaged skin cells have been conducted, and these results are introduced in this mini-review article.
    MeSH term(s) Surface-Active Agents/chemistry ; Glycolipids/chemistry ; Fatty Acids ; Structure-Activity Relationship ; Ustilaginales
    Chemical Substances Surface-Active Agents ; mannosylerythritol lipid ; Glycolipids ; Fatty Acids
    Language English
    Publishing date 2024-04-01
    Publishing country Japan
    Document type Review ; Journal Article
    ZDB-ID 2218264-0
    ISSN 1347-3352 ; 1345-8957
    ISSN (online) 1347-3352
    ISSN 1345-8957
    DOI 10.5650/jos.ess23222
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Female Mate Choice Based on Male Nuptial Coloration in Pale Chub, Zacco platypus.

    Takahashi, Daisuke

    Zoological science

    2018  Volume 35, Issue 1, Page(s) 23–27

    Abstract: Males of many animals exhibit conspicuous secondary sexual traits, which are often the result of sexual selection. During the breeding period of the pale chub (Pisces: Cyprinidae), males show various sexual traits, such as long anal fins, breeding ... ...

    Abstract Males of many animals exhibit conspicuous secondary sexual traits, which are often the result of sexual selection. During the breeding period of the pale chub (Pisces: Cyprinidae), males show various sexual traits, such as long anal fins, breeding tubercles on the head, and/or conspicuous red and greenish-blue nuptial colorations. Although these conspicuous sexual dimorphisms and dichromatisms indicate that this can serve as a model species for understanding sexual selection, it is unclear whether these male sexual traits are related to female mate choice. This study examined the relationships between female mate choice and male sexual traits under laboratory conditions. In a dichotomous choice experiment, no relationship was found between female preference and male body size, anal fin length or number of breeding tubercles. In addition, female preference was not detected for traits related to the greenish-blue nuptial color of males. Instead, females chose males based on the degree of expression of red nuptial coloration. Such female preference may be useful for selecting high-quality males with good foraging abilities or good immune function related to carotenoids and sexual hormones. The present study suggests that red nuptial coloration of the male pale chub evolved in part through female mate choice.
    MeSH term(s) Animals ; Color ; Cyprinidae/physiology ; Female ; Male ; Mating Preference, Animal ; Pigmentation
    Language English
    Publishing date 2018-02-21
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2038883-4
    ISSN 0289-0003
    ISSN 0289-0003
    DOI 10.2108/zs170102
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Boron-mediated aglycon delivery (BMAD) for the stereoselective synthesis of 1,2-cis glycosides.

    Takahashi, Daisuke / Toshima, Kazunobu

    Advances in carbohydrate chemistry and biochemistry

    2022  Volume 82, Page(s) 79–105

    Abstract: 1,2-cis Glycosides are frequently found in biologically active natural products, pharmaceutical compounds, and highly functional materials. Therefore, elucidating the role of mechanism of their biological activities will help clarify the structure- ... ...

    Abstract 1,2-cis Glycosides are frequently found in biologically active natural products, pharmaceutical compounds, and highly functional materials. Therefore, elucidating the role of mechanism of their biological activities will help clarify the structure-activity relationships of these diverse compounds and create new lead compounds for pharmaceuticals by modifying their structures. However, unlike 1,2-trans glycosides, the stereoselective synthesis of 1,2-cis glycosides remains difficult due to the nonavailability of neighboring group participation from the 2-O-acyl functionalities of the glycosyl donors. In this context, we recently developed organoboron-catalyzed 1,2-cis-stereoselecitve glycosylations, called boron-mediated aglycon delivery (BMAD) methods. In this review article, we introduce the BMAD methods and several examples of their application to the synthesis of biologically active glycosides.
    MeSH term(s) Glycosides/chemistry ; Boron/chemistry ; Stereoisomerism ; Glycosylation ; Biological Products
    Chemical Substances Glycosides ; Boron (N9E3X5056Q) ; Biological Products
    Language English
    Publishing date 2022-11-14
    Publishing country Netherlands
    Document type Review ; Journal Article
    ISSN 2162-5530
    ISSN (online) 2162-5530
    DOI 10.1016/bs.accb.2022.10.003
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Cross-disciplinary insights into the mechanisms of plant cold hardiness: From molecules to ecosystems.

    Charrier, Guillaume / Willick, Ian R / Takahashi, Daisuke

    Physiologia plantarum

    2023  Volume 175, Issue 2, Page(s) e13901

    MeSH term(s) Ecosystem ; Acclimatization ; Seasons ; Cold Temperature
    Language English
    Publishing date 2023-04-25
    Publishing country Denmark
    Document type Editorial
    ZDB-ID 2020837-6
    ISSN 1399-3054 ; 0031-9317
    ISSN (online) 1399-3054
    ISSN 0031-9317
    DOI 10.1111/ppl.13901
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Plant type II arabinogalactan: Structural features and modification to increase functionality.

    Ghosh, Kanika / Takahashi, Daisuke / Kotake, Toshihisa

    Carbohydrate research

    2023  Volume 529, Page(s) 108828

    Abstract: Type II arabinogalactans (AGs) are a highly diverse class of plant polysaccharides generally encountered as the carbohydrate moieties of certain extracellular proteoglycans, the so-called arabinogalactan-proteins (AGPs), which are found on plasma ... ...

    Abstract Type II arabinogalactans (AGs) are a highly diverse class of plant polysaccharides generally encountered as the carbohydrate moieties of certain extracellular proteoglycans, the so-called arabinogalactan-proteins (AGPs), which are found on plasma membranes and in cell walls. The basic structure of type II AG is a 1,3-β-D-galactan main chain with 1,6-β-D-galactan side chains. The side chains are further decorated with other sugars such as α-l-arabinose and β-d-glucuronic acid. In addition, AGs with 1,6-β-D-galactan as the main chain, which are designated as 'type II related AG' in this review, can also be found in several plants. Due to their diverse and heterogenous features, the determination of carbohydrate structures of type II and type II related AGs is not easy. On the other hand, these complex AGs are scientifically and commercially attractive materials whose structures can be modified by chemical and biochemical approaches for specific purposes. In the current review, what is known about the chemical structures of type II and type II related AGs from different plant sources is outlined. After that, structural analysis techniques are considered and compared. Finally, structural modifications that enhance or alter functionality are highlighted.
    MeSH term(s) Galactans/chemistry ; Polysaccharides/chemistry ; Carbohydrates
    Chemical Substances arabinogalactan (SL4SX1O487) ; Galactans ; Polysaccharides ; Carbohydrates
    Language English
    Publishing date 2023-05-02
    Publishing country Netherlands
    Document type Review ; Journal Article
    ZDB-ID 1435-7
    ISSN 1873-426X ; 0008-6215
    ISSN (online) 1873-426X
    ISSN 0008-6215
    DOI 10.1016/j.carres.2023.108828
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Temporal cell wall changes during cold acclimation and deacclimation and their potential involvement in freezing tolerance and growth

    Kutsuno, Tatsuya / Chowhan, Sushan / Kotake, Toshihisa / Takahashi, Daisuke

    Physiologia Plantarum. 2023 Jan., v. 175, no. 1 p.e13837-

    2023  

    Abstract: Plants adapt to freezing stress through cold acclimation, which is induced by nonfreezing low temperatures and accompanied by growth arrest. A later increase in temperature after cold acclimation leads to rapid loss of freezing tolerance and growth ... ...

    Abstract Plants adapt to freezing stress through cold acclimation, which is induced by nonfreezing low temperatures and accompanied by growth arrest. A later increase in temperature after cold acclimation leads to rapid loss of freezing tolerance and growth resumption, a process called deacclimation. Appropriate regulation of the trade‐off between freezing tolerance and growth is necessary for efficient plant development in a changing environment. The cell wall, which mainly consists of polysaccharide polymers, is involved in both freezing tolerance and growth. Still, it is unclear how the balance between freezing tolerance and growth is affected during cold acclimation and deacclimation by the changes in cell wall structure and what role is played by its monosaccharide composition. Therefore, to elucidate the regulatory mechanisms controlling freezing tolerance and growth during cold acclimation and deacclimation, we investigated cell wall changes in detail by sequential fractionation and monosaccharide composition analysis in the model plant Arabidopsis thaliana, for which a plethora of information and mutant lines are available. We found that arabinogalactan proteins and pectic galactan changed in close coordination with changes in freezing tolerance and growth during cold acclimation and deacclimation. On the other hand, arabinan and xyloglucan did not return to nonacclimation levels after deacclimation but stabilized at cold acclimation levels. This indicates that deacclimation does not completely restore cell wall composition to the nonacclimated state but rather changes it to a specific novel composition that is probably a consequence of the loss of freezing tolerance and provides conditions for growth resumption.
    Keywords Arabidopsis thaliana ; acclimation ; arabinans ; arabinogalactans ; cell wall components ; cell walls ; cold ; deacclimation ; fractionation ; mutants ; plant development ; temperature ; xyloglucans
    Language English
    Dates of publication 2023-01
    Publishing place Blackwell Publishing Ltd
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 2020837-6
    ISSN 1399-3054 ; 0031-9317
    ISSN (online) 1399-3054
    ISSN 0031-9317
    DOI 10.1111/ppl.13837
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Author Correction: Effect of longer femoral head on leg length, offset, and range of motion in total hip arthroplasty: a simulation study.

    Shimizu, Tomohiro / Miyazaki, Takuji / Yokota, Shunichi / Ishizu, Hotaka / Takahashi, Daisuke / Iwasaki, Norimasa

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 8481

    Language English
    Publishing date 2024-04-11
    Publishing country England
    Document type Published Erratum
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-59221-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Effect of longer femoral head on leg length, offset, and range of motion in total hip arthroplasty: a simulation study.

    Shimizu, Tomohiro / Miyazaki, Takuji / Yokota, Shunichi / Ishizu, Hotaka / Takahashi, Daisuke / Iwasaki, Norimasa

    Scientific reports

    2024  Volume 14, Issue 1, Page(s) 1829

    Abstract: In this study, we investigated the relationship between head length, leg length, offset, and dislocation resistance using range of motion (ROM) simulations based on computed tomography data to examine if a longer femoral head reduces the risk of ... ...

    Abstract In this study, we investigated the relationship between head length, leg length, offset, and dislocation resistance using range of motion (ROM) simulations based on computed tomography data to examine if a longer femoral head reduces the risk of dislocation. The femoral components were set to eliminate leg length differences with a + 0 mm head, and variations for + 4-, + 7-, and + 8-mm heads were analyzed. Offset and ROM were assessed when longer heads were used, with the leg length adjusted to be similar to that of the contralateral side. While internal rotation at flexion and external rotation at extension increased with + 4-mm longer heads, the + 7- and + 8-mm heads did not increase dislocation resistance. When adjusting for leg length, the longer heads showed no significant differences in offset and ROM. Enhancing dislocation resistance by solely increasing the offset with a longer head, while simultaneously adjusting the depth of stem insertion, may be a beneficial intraoperative technique. Although a + 4-mm longer head possibly increases ROM without impingement, heads extended by + 7 or + 8 mm may not exhibit the same advantage. Therefore, surgeons should consider this technique based on the implant design.
    MeSH term(s) Humans ; Arthroplasty, Replacement, Hip ; Femur Head/diagnostic imaging ; Femur Head/surgery ; Range of Motion, Articular ; Computer Simulation ; Joint Dislocations
    Language English
    Publishing date 2024-01-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-024-52264-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Osteoporosis, Osteoarthritis, and Subchondral Insufficiency Fracture: Recent Insights.

    Yokota, Shunichi / Ishizu, Hotaka / Miyazaki, Takuji / Takahashi, Daisuke / Iwasaki, Norimasa / Shimizu, Tomohiro

    Biomedicines

    2024  Volume 12, Issue 4

    Abstract: The increased incidence of osteoarthritis (OA), particularly knee and hip OA, and osteoporosis (OP), owing to population aging, have escalated the medical expense burden. Osteoarthritis is more prevalent in older women, and the involvement of subchondral ...

    Abstract The increased incidence of osteoarthritis (OA), particularly knee and hip OA, and osteoporosis (OP), owing to population aging, have escalated the medical expense burden. Osteoarthritis is more prevalent in older women, and the involvement of subchondral bone fragility spotlights its association with OP. Notably, subchondral insufficiency fracture (SIF) may represent a more pronounced condition of OA pathophysiology. This review summarizes the relationship between OA and OP, incorporating recent insights into SIF. Progressive SIF leads to joint collapse and secondary OA and is associated with OP. Furthermore, the thinning and fragility of subchondral bone in early-stage OA suggest that SIF may be a subtype of OA (osteoporosis-related OA, OPOA) characterized by significant subchondral bone damage. The high bone mineral density observed in OA may be overestimated due to osteophytes and sclerosis and can potentially contribute to OPOA. The incidence of OPOA is expected to increase along with population aging. Therefore, prioritizing OP screening, early interventions for patients with early-stage OA, and fracture prevention measures such as rehabilitation, fracture liaison services, nutritional management, and medication guidance are essential.
    Language English
    Publishing date 2024-04-11
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2720867-9
    ISSN 2227-9059
    ISSN 2227-9059
    DOI 10.3390/biomedicines12040843
    Database MEDical Literature Analysis and Retrieval System OnLINE

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