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Himemiya-Hakucho A, Taketani A, Nakagawa A, Sakai H, Shigemoto A, Takase I. Practices and Awareness Regarding an Infant's Sleep Environment among Japanese Caregivers: A Cross-Sectional Survey. Int J Environ Res Public Health 2024; 21:471. [PMID: 38673381 PMCID: PMC11050700 DOI: 10.3390/ijerph21040471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/02/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024]
Abstract
Preventing sudden, unexpected infant death related to sleep, especially suffocation and sudden infant death syndrome, remains challenging globally. To evaluate factors associated with an unsafe sleep environment (SE) for infants in Japan, this cross-sectional study investigated the current status of practices and awareness among caregivers about a safe SE. Two hundred and fifty-four caregivers of infants in Yamaguchi Prefecture participated. Among the caregivers, 96.0% could not thoroughly practice a safe SE, although 65.0% had knowledge about a safe SE. More unsafe SE practices were significantly associated with 8- to 11-month-old infants than with 0- to 3-month-old infants, using the same practice as for an older child than with accessing information or a familiar person than with mass media as the most useful source of information. The differences in having knowledge were not associated with their practice. Many caregivers obtained information about an infant's SE from mass media and a familiar person. They preferred education via a face-to-face method by medical experts to raise awareness about a safe SE. Thus, efforts need to be developed in Japan in which experts who directly attend to caregivers can truly educate them to ensure that caregivers are continuously aware of the importance of an SE.
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Affiliation(s)
- Ayako Himemiya-Hakucho
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; (A.N.); (H.S.); (A.S.); (I.T.)
| | - Ayumi Taketani
- Undergraduate Courses of Medicine, Faculty of Medicine and Health Sciences, Yamaguchi University, Yamaguchi 755-8505, Japan;
| | - Aoi Nakagawa
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; (A.N.); (H.S.); (A.S.); (I.T.)
| | - Hiroki Sakai
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; (A.N.); (H.S.); (A.S.); (I.T.)
| | - Azumi Shigemoto
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; (A.N.); (H.S.); (A.S.); (I.T.)
| | - Izumi Takase
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, Yamaguchi 755-8505, Japan; (A.N.); (H.S.); (A.S.); (I.T.)
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Himemiya-Hakucho A, Saito M, Nakagawa A, Shigemoto A, Takase I. A retrospective study of unexpected deaths with alcohol use disorder from Japanese forensic autopsy cases. Leg Med (Tokyo) 2024; 69:102440. [PMID: 38574494 DOI: 10.1016/j.legalmed.2024.102440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/17/2024] [Accepted: 03/27/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Alcohol use disorder (AUD) is an important target for prevention of alcohol-related problems. In this study, we analyzed forensic autopsy cases to reveal the characteristics of the living conditions and death situations of individuals with AUD. METHODS We retrospectively investigated 486 cases with a history of alcohol consumption for which a forensic autopsy was performed from 2012 to 2021 in Yamaguchi prefecture. Judgement of AUD was made using DSM-5. Various factors were compared statistically between AUD and non-AUD cases. RESULTS Of the 486 cases, 225 (46.2%) were judged to be AUD, including 89 (18.3%) with advanced AUD, 33 (6.8%) were judged not to be AUD, and a judgement could not be made in the remaining cases. AUD was associated with alcohol consumption prior to death. Only 14.3% of the advanced-AUD cases was in treatment for alcohol dependence. The rates of interpersonal, health, financial and legal problems, receipt of public assistance and an extremely cluttered or hoarding house status were higher in all AUD and advanced AUD cases. Living alone, smoking and BMI were also associated with AUD. CONCLUSIONS Many cases of alcohol-related deaths may have AUD, and persons with AUD who undergo a forensic autopsy commonly have multiple socioeconomic factors that may be associated with isolation that is involved in exacerbation of AUD. Further studies of these associations are needed because early diagnosis and treatment of AUD and support for the patient may lead to reduction of alcohol-related deaths.
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Affiliation(s)
- Ayako Himemiya-Hakucho
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Misaki Saito
- Undergraduate Courses of Medicine, Yamaguchi University Faculty of Medicine and Health Sciences, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Aoi Nakagawa
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Azumi Shigemoto
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Izumi Takase
- Department of Legal Medicine, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
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Wilamowski M, Sherrell DA, Kim Y, Lavens A, Henning RW, Lazarski K, Shigemoto A, Endres M, Maltseva N, Babnigg G, Burdette SC, Srajer V, Joachimiak A. Time-resolved β-lactam cleavage by L1 metallo-β-lactamase. Nat Commun 2022; 13:7379. [PMID: 36450742 PMCID: PMC9712583 DOI: 10.1038/s41467-022-35029-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 11/14/2022] [Indexed: 12/05/2022] Open
Abstract
Serial x-ray crystallography can uncover binding events, and subsequent chemical conversions occurring during enzymatic reaction. Here, we reveal the structure, binding and cleavage of moxalactam antibiotic bound to L1 metallo-β-lactamase (MBL) from Stenotrophomonas maltophilia. Using time-resolved serial synchrotron crystallography, we show the time course of β-lactam hydrolysis and determine ten snapshots (20, 40, 60, 80, 100, 150, 300, 500, 2000 and 4000 ms) at 2.20 Å resolution. The reaction is initiated by laser pulse releasing Zn2+ ions from a UV-labile photocage. Two metal ions bind to the active site, followed by binding of moxalactam and the intact β-lactam ring is observed for 100 ms after photolysis. Cleavage of β-lactam is detected at 150 ms and the ligand is significantly displaced. The reaction product adjusts its conformation reaching steady state at 2000 ms corresponding to the relaxed state of the enzyme. Only small changes are observed in the positions of Zn2+ ions and the active site residues. Mechanistic details captured here can be generalized to other MBLs.
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Affiliation(s)
- M Wilamowski
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL, 60637, USA
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology of Jagiellonian University, 30387, Krakow, Poland
| | - D A Sherrell
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - Y Kim
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - A Lavens
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - R W Henning
- Center for Advanced Radiation Sources, University of Chicago, Chicago, IL, 60637, USA
| | - K Lazarski
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA
| | - A Shigemoto
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - M Endres
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA
| | - N Maltseva
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA
| | - G Babnigg
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA
| | - S C Burdette
- Department of Chemistry and Biochemistry, Worcester Polytechnic Institute, Worcester, MA, 01609, USA
| | - V Srajer
- Center for Advanced Radiation Sources, University of Chicago, Chicago, IL, 60637, USA
| | - A Joachimiak
- Center for Structural Genomics of Infectious Diseases, Consortium for Advanced Science and Engineering, University of Chicago, Chicago, IL, 60667, USA.
- Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL, 60637, USA.
- Structural Biology Center, X-ray Science Division, Argonne National Laboratory, Argonne, IL, 60439, USA.
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