start-ver=1.4
cd-journal=joma
no-vol=12
cd-vols=
no-issue=
article-no=
start-page=1445364
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2024
dt-pub=20241031
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Degree of twist in the Achilles tendon interacts with its length and thickness in affecting local strain magnitude: a finite element analysis
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Introduction: The relationship between the twisting of the three subtendons of the Achilles tendon (AT) and local strain has received attention in recent years. The present study aimed to elucidate how the degree of twist in the AT affects strain using finite element (FE) analysis, while also considering other geometries (e.g., length, thickness, and width) and their combinations. <br>
Methods: A total of 59 FE models with different degrees of twist and geometries were created. A lengthening force (z-axis) of 1,000 N was applied to each subtendon (total: 3,000 N). The average value of the first principal Lagrange strain was calculated for the middle third of the total length of the model. <br>
Results: Statistical (stepwise) analysis revealed the effects of the degree of twist, other geometries, and their combinations on AT strain. The main findings were as follows: (1) a greater degree of twist resulted in higher average strains (t = 9.28, p < 0.0001) and (2) the effect of the degree of twist on the strain depended on dimensions of thickness of the most distal part of the AT (t = -4.49, p < 0.0001) and the length of the AT (t = -3.82, p = 0.0005). Specifically, when the thickness of the most distal part and length were large, the degree of twist had a small effect on the first principal Lagrange strain; however, when the thickness of the most distal part and length were small, a greater degree of twist results in higher first principal Lagrange strain. <br>
Conclusion: These results indicate that the relationship between the degree of twist and local strain is complex and may not be accurately assessed by FE simulation using a single geometry.
en-copyright=
kn-copyright=

en-aut-name=EnomotoShota
en-aut-sei=Enomoto
en-aut-mei=Shota
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=FuruuchiShunya
en-aut-sei=Furuuchi
en-aut-mei=Shunya
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=IshibashiTatsuki
en-aut-sei=Ishibashi
en-aut-mei=Tatsuki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=YamadaShu
en-aut-sei=Yamada
en-aut-mei=Shu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=OdaToshiaki
en-aut-sei=Oda
en-aut-mei=Toshiaki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

affil-num=1
en-affil=Institute for Promotion of Education and Campus Life, Okayama University
kn-affil=

affil-num=2
en-affil=Graduate School of Science and Technology, Keio University
kn-affil=

affil-num=3
en-affil=Graduate School of Science and Technology, Keio University
kn-affil=

affil-num=4
en-affil=Faculty of Science and Technology, Keio University
kn-affil=

affil-num=5
en-affil=Graduate School of Education, Hyogo University of Teacher Education
kn-affil=
en-keyword=achilles tendon
kn-keyword=achilles tendon
en-keyword=computational model
kn-keyword=computational model
en-keyword=small composite design
kn-keyword=small composite design
en-keyword=subtendon
kn-keyword=subtendon
en-keyword=tendinopathy
kn-keyword=tendinopathy
END

start-ver=1.4
cd-journal=joma
no-vol=11
cd-vols=
no-issue=
article-no=
start-page=509
end-page=
dt-received=
dt-revised=
dt-accepted=
dt-pub-year=2020
dt-pub=20200407
dt-online=
en-article=
kn-article=
en-subject=
kn-subject=
en-title=
kn-title=Virome Analysis of Aphid Populations That Infest the Barley Field: The Discovery of Two Novel Groups of Nege/Kita-Like Viruses and Other Novel RNA Viruses
en-subtitle=
kn-subtitle=
en-abstract=
kn-abstract=Aphids (order Hemiptera) are important insect pests of crops and are also vectors of many plant viruses. However, little is known about aphid-infecting viruses, particularly their diversity and relationship to plant viruses. To investigate the aphid viromes, we performed deep sequencing analyses of the aphid transcriptomes from infested barley plants in a field in Japan. We discovered virus-like sequences related to nege/kita-, flavi-, tombus-, phenui-, mononega-, narna-, chryso-, partiti-, and luteoviruses. Using RT-PCR and sequence analyses, we determined almost complete sequences of seven nege/kitavirus-like virus genomes; one of which was a variant of the Wuhan house centipede virus (WHCV-1). The other six seem to belong to four novel viruses distantly related to Wuhan insect virus 9 (WhIV-9) or Hubei nege-like virus 4 (HVLV-4). We designated the four viruses as barley aphid RNA virus 1 to 4 (BARV-1 to -4). Moreover, some nege/kitavirus-like sequences were found by searches on the transcriptome shotgun assembly (TSA) libraries of arthropods and plants. Phylogenetic analyses showed that BARV-1 forms a clade with WHCV-1 and HVLV-4, whereas BARV-2 to -4 clustered with WhIV-9 and an aphid virus, Aphis glycines virus 3. Both virus groups (tentatively designated as Centivirus and Aphiglyvirus, respectively), together with arthropod virus-like TSAs, fill the phylogenetic gaps between the negeviruses and kitaviruses lineages. We also characterized the flavi/jingmen-like and tombus-like virus sequences as well as other RNA viruses, including six putative novel viruses, designated as barley aphid RNA viruses 5 to 10. Interestingly, we also discovered that some aphid-associated viruses, including nege/kita-like viruses, were present in different aphid species, raising a speculation that these viruses might be distributed across different aphid species with plants being the reservoirs. This study provides novel information on the diversity and spread of nege/kitavirus-related viruses and other RNA viruses that are associated with aphids.
en-copyright=
kn-copyright=

en-aut-name=KondoHideki
en-aut-sei=Kondo
en-aut-mei=Hideki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=1
ORCID=

en-aut-name=FujitaMiki
en-aut-sei=Fujita
en-aut-mei=Miki
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=2
ORCID=

en-aut-name=HisanoHiroshi
en-aut-sei=Hisano
en-aut-mei=Hiroshi
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=3
ORCID=

en-aut-name=HyodoKiwamu
en-aut-sei=Hyodo
en-aut-mei=Kiwamu
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=4
ORCID=

en-aut-name=AndikaIda Bagus
en-aut-sei=Andika
en-aut-mei=Ida Bagus
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=5
ORCID=

en-aut-name=SuzukiNobuhiro
en-aut-sei=Suzuki
en-aut-mei=Nobuhiro
kn-aut-name=
kn-aut-sei=
kn-aut-mei=
aut-affil-num=6
ORCID=

affil-num=1
en-affil=Institute of Plant Science and Resources (IPSR), Okayama University
kn-affil=

affil-num=2
en-affil=Institute of Plant Science and Resources (IPSR), Okayama University
kn-affil=

affil-num=3
en-affil=Institute of Plant Science and Resources (IPSR), Okayama University
kn-affil=

affil-num=4
en-affil=Institute of Plant Science and Resources (IPSR), Okayama University
kn-affil=

affil-num=5
en-affil=College of Plant Health and Medicine, Qingdao Agricultural University
kn-affil=

affil-num=6
en-affil=Institute of Plant Science and Resources (IPSR), Okayama University
kn-affil=
en-keyword=negevirus
kn-keyword=negevirus
en-keyword=kitavirus
kn-keyword=kitavirus
en-keyword=aphid
kn-keyword=aphid
en-keyword=virome
kn-keyword=virome
en-keyword=RNA seq
kn-keyword=RNA seq
en-keyword=barley
kn-keyword=barley
en-keyword=diversity
kn-keyword=diversity
en-keyword=horizontal transmission
kn-keyword=horizontal transmission
END