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Article ; Online: Differences in daily milk production during early pregnancy alter placental characteristics and neonatal metabolic amino acid levels in dairy cows

Riku MASHIMO / Sayaka ITO / Chiho KAWASHIMA

The Journal of Reproduction and Development, Vol 69, Iss 5, Pp 254-

2023 Volume 260

Abstract: We investigated the effects of differences in milk production during early pregnancy on placental characteristics at full term, calf birth weights, and their metabolic status. Thirty-four Holstein cows were categorized into three groups (Low, n = 9; ... ...

Abstract	We investigated the effects of differences in milk production during early pregnancy on placental characteristics at full term, calf birth weights, and their metabolic status. Thirty-four Holstein cows were categorized into three groups (Low, n = 9; Middle, n = 16; High, n = 9) based on the quartile of average daily 4% fat-corrected milk production during early pregnancy. The High group showed higher milk component production than the other groups (P < 0.05) during early and mid-pregnancy. Although most placental characteristics did not differ significantly among the groups, cows in the High group had larger individual cotyledons and fewer medium-sized cotyledons than those in the Low group (P < 0.05). Plasma amino acid concentrations of calves in the Low and High groups were significantly higher than those of calves in the Middle group, although calf birth weights were similar among the groups. Furthermore, cows in the Low group had longer dry periods than those in the High (P = 0.004) and Middle (P = 0.058) groups. This suggests that cows in the Low group may have provided more amino acids to the fetus because of low lactation and long dry periods. Conversely, cows in the High group required more energy for lactation during early pregnancy, which can reduce nutrient availability to the placenta and fetus; however, increasing individual cotyledonary sizes during late pregnancy may ensure that the same amounts of amino acids as those in cows in the Low group are supplied to the fetus, recovering the birth weights.
Keywords	calf birth weight ; cotyledons ; milk production ; plasma amino acid concentration ; Reproduction ; QH471-489 ; Internal medicine ; RC31-1245
Subject code	630
Language	English
Publishing date	2023-08-01T00:00:00Z
Publisher	The Society for Reproduction and Development
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Immunohistochemical identification of epithelial cell types in the isthmus of bovine oviduct

Sayaka ITO / Yuna YAMAGUCHI / Sayaka KUBOTA / Yuki YAMAMOTO / Koji KIMURA

The Journal of Reproduction and Development, Vol 69, Iss 1, Pp 18-

Comparison with the ampulla

2022 Volume 24

Abstract: The oviductal epithelium consists of ciliated and non-ciliated cells, and their numbers vary depending on the segment of the oviduct and stage of the estrous cycle. Compared with the ampulla, fewer cyclic changes in the number of the two types of cells ... ...

Abstract	The oviductal epithelium consists of ciliated and non-ciliated cells, and their numbers vary depending on the segment of the oviduct and stage of the estrous cycle. Compared with the ampulla, fewer cyclic changes in the number of the two types of cells occur in the isthmus. Recently, we have reported that the epithelium in the ampullary oviduct is composed of many types of cells during different translational/transcriptional states, and their numbers change during the estrous cycle. However, detailed information regarding the epithelial cell subtypes lining the isthmic oviductal epithelium has not yet been reported. In this study, we aimed to identify the epithelial subtypes in the isthmus of the oviduct using immunohistochemistry. Some similarities and differences were observed between the ampulla and isthmus. As observed in the ampulla, epithelial cells of the isthmus expressed either FOXJ1 (ciliogenesis marker) or PAX8 (non-ciliated cell marker). The estrous cycle affected the number of Ki67+ cells but not that of ciliated cells. A relatively high rate of Ki67+ cells (60%) was observed at 1–4 days after the ovulation. Interestingly, unlike the ampulla, Ki67+/FOXJ1+ cells (12.6 ± 1.1%) were discovered in the isthmus. Double staining for Ki67 with FOXJ1, PAX8, or Centrin-1 (a centriole marker) revealed that Centrin-1 was localized on the apical surface of some Ki67+/FOXJ1+ cells. In conclusion, some epithelial cell subtypes exist in the isthmus of the oviduct and isthmus-specific cell subtypes have been identified. These region-specific cells may provide functional and morphological differences between the ampulla and isthmus of the oviduct.
Keywords	characterization ; ciliated cells ; cow ; isthmic oviductal epithelium ; proliferation ; Reproduction ; QH471-489 ; Internal medicine ; RC31-1245
Language	English
Publishing date	2022-11-01T00:00:00Z
Publisher	The Society for Reproduction and Development
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Saliva as a useful tool for evaluating upper mucosal antibody response to influenza.

Yasuko Tsunetsugu-Yokota / Sayaka Ito / Yu Adachi / Taishi Onodera / Tsutomu Kageyama / Yoshimasa Takahashi

PLoS ONE, Vol 17, Iss 2, p e

2022 Volume 0263419

Abstract: Mucosal immunity plays a crucial role in controlling upper respiratory infections, including influenza. We established a quantitative ELISA to measure the amount of influenza virus-specific salivery IgA (sIgA) and salivary IgG (sIgG) antibodies using a ... ...

Abstract	Mucosal immunity plays a crucial role in controlling upper respiratory infections, including influenza. We established a quantitative ELISA to measure the amount of influenza virus-specific salivery IgA (sIgA) and salivary IgG (sIgG) antibodies using a standard antibody broadly reactive to the influenza A virus. We then analyzed saliva and serum samples from seven individuals infected with the A(H1N1)pdm09 influenza virus during the 2019-2020 flu seasons. We detected an early (6-10 days post-infection) increase of sIgA in five of the seven samples and a later (3-5 weeks) increase of sIgG in six of the seven saliva samples. Although the conventional parenteral influenza vaccine did not induce IgA production in saliva, vaccinated individuals with a history of influenza infection had higher basal levels of sIgA than those without a history. Interestingly, we observed sIgA and sIgG in an asymptomatic individual who had close contact with two influenza cases. Both early mucosal sIgA secretion and late systemically induced sIgG in the mucosal surface may protect against virus infection. Despite the small sample size, our results indicate that the saliva test system can be useful for analyzing upper mucosal immunity in influenza.
Keywords	Medicine ; R ; Science ; Q
Language	English
Publishing date	2022-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Association between the planktonic larval and benthic stages of Manila clam Ruditapes philippinarum in eastern Hokkaido, Japan

Hasegawa, Natsuki / Hiroya Abe / Sayaka Ito / Toshihiro Onitsuka

Fisheries science. 2018 Mar., v. 84, no. 2

2018

Abstract: The association between planktonic larval and benthic stages of Manila clam Ruditapes philippinarum and factors determining successful recruitment were studied in Akkeshi-ko estuary and Akkeshi Bay, Hokkaido, northern Japan. The field study showed that ... ...

Abstract	The association between planktonic larval and benthic stages of Manila clam Ruditapes philippinarum and factors determining successful recruitment were studied in Akkeshi-ko estuary and Akkeshi Bay, Hokkaido, northern Japan. The field study showed that planktonic larvae were localized mainly in the bay after dispersal from the estuary and recruitment to the estuarine fishing grounds was not always successful. A numerical analysis suggested that estuarine circulation transported tracers, used to simulate planktonic larva, from the estuary to the bay but the number of returning tracers varied depending on the river discharge and wind direction. The planktonic larvae were affected by unsuitable conditions for survival in the estuary, such as high turbidity. We conclude that most larvae develop within the bay, where conditions are more saline and less turbid, and that although return to the estuary is essential for recruitment, it is not necessarily related to the abundance of larvae.
Keywords	estuaries ; fishery resources ; larvae ; plankton ; Ruditapes philippinarum ; stream flow ; tracer techniques ; turbidity ; wind direction ; Japan
Language	English
Dates of publication	2018-03
Size	p. 237-249.
Publishing place	Springer Japan
Document type	Article
ZDB-ID	1192654-5
ISSN	1444-2906 ; 0919-9268
ISSN (online)	1444-2906
ISSN	0919-9268
DOI	10.1007/s12562-017-1168-z
Database	NAL-Catalogue (AGRICOLA)

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Article: Successive use of different habitats during the early life stages of Pacific herring Clupea pallasii in Akkeshi waters on the east coast of Hokkaido

Shirafuji, Norio / Naoto Murakami / Sayaka Ito / Taizo Morioka / Toru Nakagawa / Toshihiro Onitsuka / Yoshiro Watanabe

Fisheries science. 2018 Mar., v. 84, no. 2

2018

Abstract: Distributions of eggs, larvae and juveniles of Pacific herring Clupea pallasii were surveyed in Lake Akkeshi and the connecting Akkeshi Bay on the Pacific coast of eastern Hokkaido. Eggs were found attached to seagrasses and seaweeds in the densely ... ...

Abstract	Distributions of eggs, larvae and juveniles of Pacific herring Clupea pallasii were surveyed in Lake Akkeshi and the connecting Akkeshi Bay on the Pacific coast of eastern Hokkaido. Eggs were found attached to seagrasses and seaweeds in the densely vegetated eastern inner lake. Larvae (7.1–34.9 mm total length) were distributed in the less densely vegetated inner lake during April and June. Juveniles (35.0–89.6 mm) were collected in the central and western parts of the lake. The sites containing juveniles were less densely vegetated with water temperatures lower than 20 °C from June to August. When the water temperature of the entire lake rose to 20 °C in late summer, juveniles appeared to move from the lake to the bottom layer of Akkeshi Bay, which has lower temperatures. Thus, in Akkeshi waters, C. pallasii successively used different habitats during its egg, larval and juvenile stages. A comparison of the current limited distribution of eggs and larvae with the distribution over the entire lake and bay areas in the 1950s and 1960s (periods of large catch size) indicates that the spawning grounds and larval habitats of C. pallasii have contracted to the lake area due to low spawning stock biomass in recent years.
Keywords	biomass ; Clupea pallasii pallasii ; coasts ; eggs ; habitats ; juveniles ; lakes ; larvae ; macroalgae ; seagrasses ; spawning ; summer ; water temperature ; Japan
Language	English
Dates of publication	2018-03
Size	p. 227-236.
Publishing place	Springer Japan
Document type	Article
ZDB-ID	1192654-5
ISSN	1444-2906 ; 0919-9268
ISSN (online)	1444-2906
ISSN	0919-9268
DOI	10.1007/s12562-018-1175-8
Database	NAL-Catalogue (AGRICOLA)

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Article: Use of artificial seawater in the rearing of the fluvial prawn Macrobrachium yui larvae

Okutsu, Tomoyuki / Phonenaphet Chanthasone / Phutsamone Phommachan / Aloun Kounthongbang / Oulaytham Lasasimma / Koji Hamada / Shinsuke Morioka / Sayaka Ito

Aquaculture international. 2018 Feb., v. 26, no. 1

2018

Abstract: The fluvial prawn Macrobrachium yui lives in caves during the free-swimming zoea larval stages, and the hatched larvae require cave stream water for normal development. To develop larval culture techniques for M. yui in the absence of cave stream water, ... ...

Abstract	The fluvial prawn Macrobrachium yui lives in caves during the free-swimming zoea larval stages, and the hatched larvae require cave stream water for normal development. To develop larval culture techniques for M. yui in the absence of cave stream water, we determined the relationship between salinity tolerance of hatched larvae and egg size in Macrobrachium species and tested the effect of rearing-water salinity (0, 1.5, 3.5, and 10.5 ppt) on larval survival during free-swimming zoea larval stages. When reared at 3.5-ppt salinity, the hatched larvae successfully settled on the bottom and had the highest survival, with more than 90% of the hatched larvae developing into postlarvae. This indicates that we can successfully rear the free-swimming zoea larvae using 3.5-ppt seawater in place of cave stream water (0.18- to 0.27-ppt salinities). To test the acclimation of the postlarvae to freshwater, we reared the postlarvae for 2 weeks after settling, under three treatment conditions (I: rearing at 0 ppt for 2 weeks; II: rearing at 1.7 ppt for the first week and 0 ppt for the second week; III: rearing at 3.5 ppt for 2 weeks), and compared their survival under the different conditions. The postlarvae had the highest survival (78%) in treatment II. This suggests that M. yui has the ability to gradually adapt to freshwater, after the free-swimming zoea larvae have settled on the bottom and developed into postlarvae. These results would be critically useful for larval culture of M. yui, helping to restock the wild with the larval prawns from captive stocks to maintain the endangered local population.
Keywords	Macrobrachium ; acclimation ; caves ; eggs ; freshwater ; larvae ; postlarvae ; rearing ; salinity ; salt tolerance ; seawater ; shrimp ; streams
Language	English
Dates of publication	2018-02
Size	p. 325-335.
Publishing place	Springer International Publishing
Document type	Article
ZDB-ID	1176356-5
ISSN	1573-143X ; 0967-6120
ISSN (online)	1573-143X
ISSN	0967-6120
DOI	10.1007/s10499-017-0218-y
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: The characteristic changes in hepatitis B virus x region for hepatocellular carcinoma

Wenwen Li / Kaku Goto / Yasuo Matsubara / Sayaka Ito / Ryosuke Muroyama / Qiang Li / Naoya Kato

PLoS ONE, Vol 10, Iss 5, p e

a comprehensive analysis based on global data.

2015 Volume 0125555

Abstract: Mutations in hepatitis B virus (HBV) X region (HBx) play important roles in hepatocarcinogenesis while the results remain controversial. We sought to clarify potential hepatocellular carcinoma (HCC)-characteristic mutations in HBx from HBV genotype C- ... ...

Abstract	Mutations in hepatitis B virus (HBV) X region (HBx) play important roles in hepatocarcinogenesis while the results remain controversial. We sought to clarify potential hepatocellular carcinoma (HCC)-characteristic mutations in HBx from HBV genotype C-infected patients and the distribution of those mutations in different disease phases and genotypes.HBx sequences downloaded from an online global HBV database were screened and then classified into Non-HCC or HCC group by diagnosis information. Patients' data of patient age, gender, country or area, and viral genotype were also extracted. Logistic regression was performed to evaluate the effects of mutations on HCC risk.1) Full length HBx sequences (HCC: 161; Non-HCC: 954) originated from 1115 human sera across 29 countries/areas were extracted from the downloaded 5956 HBx sequences. Genotype C occupied 40.6% of Non-HCC (387/954) and 89.4% of HCC (144/161). 2) Sixteen nucleotide positions showed significantly different distributions between genotype C HCC and Non-HCC groups. 3) Logistic regression showed that mutations A1383C (OR: 2.32, 95% CI: 1.34-4.01), R1479C/T (OR: 1.96, 95% CI: 1.05-3.64; OR: 5.15, 95% CI: 2.53-10.48), C1485T (OR: 2.40, 95% CI: 1.41-4.08), C1631T (OR: 4.09, 95% CI: 1.41-11.85), C1653T (OR: 2.58, 95% CI: 1.59-4.19), G1719T (OR: 2.11, 95% CI: 1.19-3.73), and T1800C (OR: 23.59, 95% CI: 2.25-247.65) were independent risk factors for genotype C HBV-related HCC, presenting different trends among individual disease phases. 4) Several genotype C HCC risk mutations pre-existed, even as major types, in early disease phases with other genotypes.Mutations associated with HCC risk were mainly located in HBx transactivation domain, viral promoter, protein/miRNA binding sites, and the area for immune epitopes. Furthermore, the signatures of these mutations were unique to disease phases leading to HCC, suggesting molecular counteractions between the virus and host during hepatocarcinogenesis.
Keywords	Medicine ; R ; Science ; Q
Subject code	610
Language	English
Publishing date	2015-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: IL-10-mediated signals act as a switch for lymphoproliferation in Human T-cell leukemia virus type-1 infection by activating the STAT3 and IRF4 pathways.

Leila Sawada / Yoshiko Nagano / Atsuhiko Hasegawa / Hikari Kanai / Kai Nogami / Sayaka Ito / Tomoo Sato / Yoshihisa Yamano / Yuetsu Tanaka / Takao Masuda / Mari Kannagi

PLoS Pathogens, Vol 13, Iss 9, p e

2017 Volume 1006597

Abstract: Human T-cell leukemia virus type-1 (HTLV-1) causes two distinct diseases, adult T-cell leukemia/lymphoma (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). Since there are no disease-specific differences among HTLV-1 strains, ... ...

Abstract	Human T-cell leukemia virus type-1 (HTLV-1) causes two distinct diseases, adult T-cell leukemia/lymphoma (ATL) and HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP). Since there are no disease-specific differences among HTLV-1 strains, the etiological mechanisms separating these respective lymphoproliferative and inflammatory diseases are not well understood. In this study, by using IL-2-dependent HTLV-1-infected T-cell lines (ILTs) established from patients with ATL and HAM/TSP, we demonstrate that the anti-inflammatory cytokine IL-10 and its downstream signals potentially act as a switch for proliferation in HTLV-1-infected cells. Among six ILTs used, ILTs derived from all three ATL patients grew much faster than those from three HAM/TSP patients. Although most of the ILTs tested produced IFN-γ and IL-6, the production of IL-10 was preferentially observed in the rapid-growing ILTs. Interestingly, treatment with exogenous IL-10 markedly enhanced proliferation of the slow-growing HAM/TSP-derived ILTs. The IL-10-mediated proliferation of these ILTs was associated with phosphorylation of STAT3 and induction of survivin and IRF4, all of which are characteristics of ATL cells. Knockdown of STAT3 reduced expression of IL-10, implying a positive-feedback regulation between STAT3 and IL-10. STAT3 knockdown also reduced survivin and IRF4 in the IL-10- producing or IL-10- treated ILTs. IRF4 knockdown further suppressed survivin expression and the cell growth in these ILTs. These findings indicate that the IL-10-mediated signals promote cell proliferation in HTLV-1-infected cells through the STAT3 and IRF4 pathways. Our results imply that, although HTLV-1 infection alone may not be sufficient for cell proliferation, IL-10 and its signaling pathways within the infected cell itself and/or its surrounding microenvironment may play a critical role in pushing HTLV-1-infected cells towards proliferation at the early stages of HTLV-1 leukemogenesis. This study provides useful information for understanding of ...
Keywords	Immunologic diseases. Allergy ; RC581-607 ; Biology (General) ; QH301-705.5
Subject code	570
Language	English
Publishing date	2017-09-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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