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  1. Article ; Online: Revision of Cytomegalovirus Immunoglobulin M Antibody Titer Cutoff in a Maternal Antibody Screening Program in Japan: A Cohort Comparison Involving a Total of 32,000 Pregnant Women.

    Kitamura, Asa / Toriyabe, Kuniaki / Hagimoto-Akasaka, Miki / Hamasaki-Shimada, Kyoko / Ikejiri, Makoto / Minematsu, Toshio / Suga, Shigeru / Kondo, Eiji / Kihira, Masamichi / Morikawa, Fumihiro / Ikeda, Tomoaki

    Viruses

    2023  Volume 15, Issue 4

    Abstract: ... CMV immunoglobulin (Ig) M titer cutoff for IgG avidity measurements as a reflex test in maternal ...

    Abstract Cytomegalovirus (CMV) is associated with congenital infections. We aimed to validate the revised CMV immunoglobulin (Ig) M titer cutoff for IgG avidity measurements as a reflex test in maternal screening to identify women with primary CMV infection and newborn congenital cytomegalovirus (cCMV). We screened maternal CMV antibodies (the Denka assay) in Japan, from 2017 to 2019, using a revised IgM cutoff (≥4.00 index). Participants were tested for IgG and IgM antibodies, and for IgG avidity if IgM levels exceeded the cutoff. We compared these with corresponding results from 2013 to 2017 based on the original cutoff (≥1.21) and recalculated using the revised cutoff. Newborn urine CMV DNA tests were performed for women with low avidity (≤35.0%). Among 12,832 women screened in 2017-2019, 127 (1.0%) had IgM above the revised cutoff. Thirty-five exhibited low avidity, and seven infants developed cCMV. Of 19,435 women screened in 2013-2017, 184 (1.0%) had IgM above the revised cutoff, 67 had low avidity, and 1 had cCMV. The 2017-2019 results were not significantly different from the 2013-2017 results. The revised IgM cutoff improves maternal screening in identifying primary infection and newborn cCMV; however, further study related to other assays than Denka is required.
    MeSH term(s) Infant, Newborn ; Female ; Humans ; Pregnancy ; Cytomegalovirus/genetics ; Pregnant Women ; Pregnancy Complications, Infectious/diagnosis ; Pregnancy Complications, Infectious/epidemiology ; Japan/epidemiology ; Immunoglobulin G ; Cytomegalovirus Infections/diagnosis ; Cytomegalovirus Infections/epidemiology ; Antibodies, Viral ; Immunoglobulin M ; Antibody Affinity
    Chemical Substances Immunoglobulin G ; Antibodies, Viral ; Immunoglobulin M
    Language English
    Publishing date 2023-04-13
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15040962
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Development of a simple multiple mutation detection system using seed-coat flavonoid pigments in irradiated Arabidopsis M

    Kitamura, Satoshi / Hirata, Shoya / Satoh, Katsuya / Inamura, Rie / Narumi, Issay / Oono, Yutaka

    Scientific reports

    2022  Volume 12, Issue 1, Page(s) 22467

    Abstract: ... using irradiated M ...

    Abstract Ionizing radiation induces genetic variations in plants, which makes it useful for plant breeding. A theory that the induced mutations occur randomly in the genome has long been accepted, but is now controversial. Nevertheless, a comparative analysis of the mutations at multiple loci has not been conducted using irradiated M
    MeSH term(s) Arabidopsis/metabolism ; Flavonoids ; Anthocyanins/genetics ; Plant Breeding ; Mutation ; Arabidopsis Proteins/genetics ; Arabidopsis Proteins/metabolism ; Seeds/genetics ; Seeds/metabolism ; Gene Expression Regulation, Plant
    Chemical Substances Flavonoids ; Anthocyanins ; Arabidopsis Proteins
    Language English
    Publishing date 2022-12-28
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-022-26989-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Tubulointerstitial nephritis and uveitis syndrome following meningitis and systemic lymphadenopathy with persistent Toxoplasma immunoglobulin M: a case report.

    Oya, Yoshihiro / Futami, Hidekazu / Nakazawa, Takuya / Ishijima, Kazuyuki / Umemiya, Keiko / Takizawa, Fumiyoshi / Imai, Naoki / Kitamura, Hiroshi / Matsumura, Ryutaro

    Journal of medical case reports

    2021  Volume 15, Issue 1, Page(s) 482

    Abstract: ... in immunocompromised or in some immunocompetent individuals. If the immunoglobulin M of Toxoplasma is positive ... on screening, the interpretation of the result is not simple, especially when immunoglobulin M stays positive ... syndrome was made. Toxoplasma gondii-specific immunoglobulin G and immunoglobulin M titers were ...

    Abstract Background: Tubulointerstitial nephritis and uveitis syndrome is a rare lymphocyte-related oculorenal inflammatory disease presumed to be associated with drug use and infectious agents. Toxoplasma gondii is one of such pathogens that could exhibit encephalitis, meningitis, and uveitis in immunocompromised or in some immunocompetent individuals. If the immunoglobulin M of Toxoplasma is positive on screening, the interpretation of the result is not simple, especially when immunoglobulin M stays positive persistently.
    Case presentation: A 34-year-old Asian male developed fever, headache, and lymphadenopathy with tenderness, which was initially diagnosed as meningitis. Antibiotics were started, and diclofenac sodium was used for the fever. Although his symptoms were alleviated in a week by the treatment, gradual decline in renal function was noted, prompting a renal biopsy that indicated acute granulomatous interstitial nephritis. A week later, tenderness in both eyes with blurred vision appeared and revealed iritis and keratic precipitations in both eyes; hence, the diagnosis of acute tubulointerstitial nephritis and bilateral uveitis syndrome was made. Toxoplasma gondii-specific immunoglobulin G and immunoglobulin M titers were both positive. Although we could not rule out recent infection of Toxoplasma gondii, which may cause uveitis initially, Toxoplasma immunoglobulin G avidity test indicated a distant infection, which allowed us to rule out meningitis and uveitis as responsible for the complication of recent Toxoplasma gondii infection. Drug-induced lymphocyte stimulation test, or lymphocyte transformation test of diclofenac sodium, was solely positive among the tested drugs. Uveitis was alleviated only with ophthalmic steroid, and renal function returned to normal without administration of systemic steroid.
    Conclusions: We experienced a case of diclofenac-induced tubulointerstitial nephritis and uveitis syndrome. In ruling out infections, Toxoplasma immunoglobulin M was persistently positive, and Toxoplasma immunoglobulin G avidity test indicated a "distant" infection. From these two results, we ruled out recent infection. However, it should be noted that "distant" infection indicated by commercial immunoglobulin G avidity is still a multiplex profile consisting of reinfection, reactivation, and latent infection. Narrowing down the infection profile of Toxoplasma is challenging in some cases. Therefore, careful diagnosis and extended follow-up of such patients are needed.
    MeSH term(s) Adult ; Humans ; Immunoglobulin M ; Lymphadenopathy ; Male ; Meningitis/diagnosis ; Nephritis, Interstitial/diagnosis ; Nephritis, Interstitial/drug therapy ; Toxoplasma ; Uveitis/diagnosis ; Uveitis/drug therapy
    Chemical Substances Immunoglobulin M
    Language English
    Publishing date 2021-09-23
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 2269805-X
    ISSN 1752-1947 ; 1752-1947
    ISSN (online) 1752-1947
    ISSN 1752-1947
    DOI 10.1186/s13256-021-02909-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Discovery of dihydroquinazolinone derivatives as potent, selective, and CNS-penetrant M(1) and M(4) muscarinic acetylcholine receptors agonists.

    Uruno, Yoshiharu / Konishi, Yasuko / Suwa, Atsushi / Takai, Kentaro / Tojo, Kengo / Nakako, Tomokazu / Sakai, Mutsuko / Enomoto, Takeshi / Matsuda, Harumi / Kitamura, Atsushi / Sumiyoshi, Takaaki

    Bioorganic & medicinal chemistry letters

    2015  Volume 25, Issue 22, Page(s) 5357–5361

    Abstract: We designed and synthesized a series of dihydroquinazolinone derivatives as selective M1 and M4 muscarinic acetylcholine receptors agonists. Introduction of the N-carbethoxy piperidine unit into a HTS hit compound followed by optimization of the amine ... ...

    Abstract We designed and synthesized a series of dihydroquinazolinone derivatives as selective M1 and M4 muscarinic acetylcholine receptors agonists. Introduction of the N-carbethoxy piperidine unit into a HTS hit compound followed by optimization of the amine linker and the carbamoyl moiety led to the identification of compound 1 as a potential candidate. The identified compound 1 showed high selectivity for M1 and M4 muscarinic acetylcholine receptors with M4 partial agonistic activity. In addition, compound 1 showed good brain penetration and reversed methamphetamine-induced hyperlocomotion in rats (ED50=3.0 mg/kg, sc).
    MeSH term(s) Animals ; Antipsychotic Agents/chemical synthesis ; Antipsychotic Agents/chemistry ; Antipsychotic Agents/pharmacokinetics ; Antipsychotic Agents/pharmacology ; Brain/drug effects ; Drug Discovery ; Molecular Structure ; Muscarinic Agonists/chemical synthesis ; Muscarinic Agonists/pharmacokinetics ; Muscarinic Agonists/pharmacology ; Protein Binding/drug effects ; Rats ; Receptor, Muscarinic M1/agonists ; Receptor, Muscarinic M4/agonists
    Chemical Substances Antipsychotic Agents ; Muscarinic Agonists ; Receptor, Muscarinic M1 ; Receptor, Muscarinic M4
    Language English
    Publishing date 2015-11-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2015.09.032
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Structure and inhibition of the SARS-CoV-2 main protease reveals strategy for developing dual inhibitors against M

    Sacco, Michael Dominic / Ma, Chunlong / Lagarias, Panagiotis / Gao, Ang / Townsend, Julia Alma / Meng, Xiangzhi / Dube, Peter / Zhang, Xiujun / Hu, Yanmei / Kitamura, Naoya / Hurst, Brett / Tarbet, Bart / Marty, Michael Thomas / Kolocouris, Antonios / Xiang, Yan / Chen, Yu / Wang, Jun

    bioRxiv : the preprint server for biology

    2020  

    Abstract: The main protease (M ...

    Abstract The main protease (M
    Keywords covid19
    Language English
    Publishing date 2020-07-27
    Publishing country United States
    Document type Preprint
    DOI 10.1101/2020.07.27.223727
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Structure and inhibition of the SARS-CoV-2 main protease reveal strategy for developing dual inhibitors against M

    Sacco, Michael Dominic / Ma, Chunlong / Lagarias, Panagiotis / Gao, Ang / Townsend, Julia Alma / Meng, Xiangzhi / Dube, Peter / Zhang, Xiujun / Hu, Yanmei / Kitamura, Naoya / Hurst, Brett / Tarbet, Bart / Marty, Michael Thomas / Kolocouris, Antonios / Xiang, Yan / Chen, Yu / Wang, Jun

    Science advances

    2020  Volume 6, Issue 50

    Abstract: The main protease (M ...

    Abstract The main protease (M
    MeSH term(s) Animals ; Caco-2 Cells ; Cathepsin L/antagonists & inhibitors ; Cathepsin L/chemistry ; Cathepsin L/metabolism ; Cell Line ; Cell Line, Tumor ; Chlorocebus aethiops ; Coronavirus 3C Proteases/antagonists & inhibitors ; Coronavirus 3C Proteases/chemistry ; Coronavirus 3C Proteases/metabolism ; Crystallography, X-Ray ; Dogs ; Drug Design ; Humans ; Kinetics ; Madin Darby Canine Kidney Cells ; Models, Chemical ; Molecular Dynamics Simulation ; Molecular Structure ; Protease Inhibitors/chemistry ; Protease Inhibitors/metabolism ; Protease Inhibitors/pharmacology ; Protein Domains ; Vero Cells
    Chemical Substances Protease Inhibitors ; Cathepsin L (EC 3.4.22.15) ; Coronavirus 3C Proteases (EC 3.4.22.28)
    Keywords covid19
    Language English
    Publishing date 2020-12-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2810933-8
    ISSN 2375-2548 ; 2375-2548
    ISSN (online) 2375-2548
    ISSN 2375-2548
    DOI 10.1126/sciadv.abe0751
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Relationships between immunoglobulin M and immunoglobulin G or A in colostrum of Japanese black multiparous cows.

    Taniguchi, Saya / Wang, Mengdong / Ikeda, Shuntaro / Yoshioka, Hidetugu / Nagase, Hiroshi / Kitamura, Shoko / Itoyama, Erina / Murakami, Hiroaki / Sugimoto, Miki / Kume, Shinichi

    Animal science journal = Nihon chikusan Gakkaiho

    2016  Volume 87, Issue 4, Page(s) 536–540

    Abstract: This study was conducted to clarify the relationships among immunoglobulin (Ig)M, IgG, IgA, β ...

    Abstract This study was conducted to clarify the relationships among immunoglobulin (Ig)M, IgG, IgA, β-carotene, vitamin A and α-tocopherol contents in colostrum of 24 Japanese Black multiparous cows in order to evaluate the role of IgM on colostral IgG and IgA production. Compared with colostral IgG, colostral IgM and IgA were very low but varied widely. There was positive correlation between colostral IgM and IgG, but colostral IgM was not related with colostral IgA. There was no relationship between colostral IgM and age of cows, although colostral IgG was increased with aging. There were positive correlations among colostral β-carotene, vitamin A and α-tocopherol and these vitamins were positively correlated with colostral IgM and IgG. These results indicate that fat-soluble vitamins may affect colostral IgG and IgM in cows and colostral IgG increases with the increase of colostral IgM.
    MeSH term(s) Aging/metabolism ; Animals ; Cattle ; Colostrum/chemistry ; Female ; Immunoglobulin A/metabolism ; Immunoglobulin G/metabolism ; Immunoglobulin M/metabolism ; Vitamin A/metabolism ; alpha-Tocopherol/metabolism ; beta Carotene/metabolism
    Chemical Substances Immunoglobulin A ; Immunoglobulin G ; Immunoglobulin M ; beta Carotene (01YAE03M7J) ; Vitamin A (11103-57-4) ; alpha-Tocopherol (H4N855PNZ1)
    Language English
    Publishing date 2016-04
    Publishing country Australia
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2095161-9
    ISSN 1740-0929 ; 1344-3941
    ISSN (online) 1740-0929
    ISSN 1344-3941
    DOI 10.1111/asj.12455
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Structure and inhibition of the SARS-CoV-2 main protease reveals strategy for developing dual inhibitors against M(pro) and cathepsin L

    Sacco, M. D. / Ma, C. / Lagarias, P. / Gao, A. / Townsend, J. A. / Meng, X. / Dube, P. / Zhang, X. / Hu, Y. / Kitamura, N. / Hurst, B. / Tarbet, B. / Marty, M. T. / Kolocouris, A. / Xiang, Y. / Chen, Y. / Wang, J.

    Sci Adv

    Abstract: The main protease (M(pro)) of SARS-CoV-2 is a key antiviral drug target While most M(pro ... inhibitors have a γ-lactam glutamine surrogate at the P1 position, we recently discovered several M(pro ... we solved X-ray crystal structures of M(pro) in complex with calpain inhibitors II and XII, and three ...

    Abstract The main protease (M(pro)) of SARS-CoV-2 is a key antiviral drug target While most M(pro) inhibitors have a γ-lactam glutamine surrogate at the P1 position, we recently discovered several M(pro) inhibitors have hydrophobic moieties at the P1 site, including calpain inhibitors II and XII, which are also active against human cathepsin L, a host-protease that is important for viral entry In this study, we solved X-ray crystal structures of M(pro) in complex with calpain inhibitors II and XII, and three analogs of GC-376 The structure of M(pro) with calpain inhibitor II confirmed the S1 pocket can accommodate a hydrophobic methionine side chain, challenging the idea that a hydrophilic residue is necessary at this position Interestingly, the structure of calpain inhibitor XII revealed an unexpected, inverted binding pose Taken together, the biochemical, computational, structural, and cellular data presented herein provide new directions for the development of dual inhibitors as SARS-CoV-2 antivirals
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #913665
    Database COVID19

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  9. Article ; Online: Identification of N-substituted 8-azatetrahydroquinolone derivatives as selective and orally active M(1) and M(4) muscarinic acetylcholine receptors agonists.

    Takai, Kentaro / Inoue, Yasunao / Konishi, Yasuko / Suwa, Atsushi / Uruno, Yoshiharu / Matsuda, Harumi / Nakako, Tomokazu / Sakai, Mutsuko / Nishikawa, Hiroyuki / Hashimoto, Gakuji / Enomoto, Takeshi / Kitamura, Atsushi / Uematsu, Yasuaki / Kiyoshi, Akihiko / Sumiyoshi, Takaaki

    Bioorganic & medicinal chemistry letters

    2013  Volume 23, Issue 16, Page(s) 4644–4647

    Abstract: We designed and synthesized N-substituted 8-azatetrahydroquinolone derivatives as selective M1 and M4 muscarinic acetylcholine receptors agonists. Optimization of selected derivatives led to the discovery of compound 7 as a highly potent M1 and M4 ... ...

    Abstract We designed and synthesized N-substituted 8-azatetrahydroquinolone derivatives as selective M1 and M4 muscarinic acetylcholine receptors agonists. Optimization of selected derivatives led to the discovery of compound 7 as a highly potent M1 and M4 agonist with weak hERG inhibition. Oral administration of compound 7 improved psychosis-like behavior in rats.
    MeSH term(s) Administration, Oral ; Animals ; Antipsychotic Agents/chemical synthesis ; Antipsychotic Agents/chemistry ; Antipsychotic Agents/pharmacology ; Aza Compounds/chemical synthesis ; Aza Compounds/chemistry ; Aza Compounds/pharmacology ; Behavior, Animal/drug effects ; Hydroquinones/chemical synthesis ; Hydroquinones/chemistry ; Hydroquinones/pharmacology ; Molecular Structure ; Rats ; Receptor, Muscarinic M1/agonists ; Receptor, Muscarinic M4/agonists ; Structure-Activity Relationship
    Chemical Substances Antipsychotic Agents ; Aza Compounds ; Hydroquinones ; Receptor, Muscarinic M1 ; Receptor, Muscarinic M4 ; hydroquinone (XV74C1N1AE)
    Language English
    Publishing date 2013-08-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1063195-1
    ISSN 1464-3405 ; 0960-894X
    ISSN (online) 1464-3405
    ISSN 0960-894X
    DOI 10.1016/j.bmcl.2013.06.013
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Tubulointerstitial nephritis and uveitis syndrome following meningitis and systemic lymphadenopathy with persistent Toxoplasma immunoglobulin M

    Yoshihiro Oya / Hidekazu Futami / Takuya Nakazawa / Kazuyuki Ishijima / Keiko Umemiya / Fumiyoshi Takizawa / Naoki Imai / Hiroshi Kitamura / Ryutaro Matsumura

    Journal of Medical Case Reports, Vol 15, Iss 1, Pp 1-

    a case report

    2021  Volume 15

    Abstract: ... in immunocompromised or in some immunocompetent individuals. If the immunoglobulin M of Toxoplasma is positive ... on screening, the interpretation of the result is not simple, especially when immunoglobulin M stays positive ... syndrome was made. Toxoplasma gondii-specific immunoglobulin G and immunoglobulin M titers were ...

    Abstract Abstract Background Tubulointerstitial nephritis and uveitis syndrome is a rare lymphocyte-related oculorenal inflammatory disease presumed to be associated with drug use and infectious agents. Toxoplasma gondii is one of such pathogens that could exhibit encephalitis, meningitis, and uveitis in immunocompromised or in some immunocompetent individuals. If the immunoglobulin M of Toxoplasma is positive on screening, the interpretation of the result is not simple, especially when immunoglobulin M stays positive persistently. Case presentation A 34-year-old Asian male developed fever, headache, and lymphadenopathy with tenderness, which was initially diagnosed as meningitis. Antibiotics were started, and diclofenac sodium was used for the fever. Although his symptoms were alleviated in a week by the treatment, gradual decline in renal function was noted, prompting a renal biopsy that indicated acute granulomatous interstitial nephritis. A week later, tenderness in both eyes with blurred vision appeared and revealed iritis and keratic precipitations in both eyes; hence, the diagnosis of acute tubulointerstitial nephritis and bilateral uveitis syndrome was made. Toxoplasma gondii-specific immunoglobulin G and immunoglobulin M titers were both positive. Although we could not rule out recent infection of Toxoplasma gondii, which may cause uveitis initially, Toxoplasma immunoglobulin G avidity test indicated a distant infection, which allowed us to rule out meningitis and uveitis as responsible for the complication of recent Toxoplasma gondii infection. Drug-induced lymphocyte stimulation test, or lymphocyte transformation test of diclofenac sodium, was solely positive among the tested drugs. Uveitis was alleviated only with ophthalmic steroid, and renal function returned to normal without administration of systemic steroid. Conclusions We experienced a case of diclofenac-induced tubulointerstitial nephritis and uveitis syndrome. In ruling out infections, Toxoplasma immunoglobulin M was persistently positive, and ...
    Keywords Persistent immunoglobulin M (IgM) ; Drug-induced lymphocyte stimulation test (DLST) ; Lymphocyte transformation test (LTT) ; Tubulointerstitial nephritis and uveitis (TINU) syndrome ; Toxoplasma gondii ; IgG avidity test ; Medicine ; R
    Subject code 150
    Language English
    Publishing date 2021-09-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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