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Azziz-Baumgartner E, Gonzalez R, Davis W, Calvo A, Olson N, Grant L, Hess-Holtz M, Veguilla V, Rauda R, Kaydos-Daniels SC, Sosa N, Aedo Ruíz EI, Armero Guardado J, Porter R, Franco D, Pascale JM, Peacock G. Lower cognitive scores among toddlers in birth cohorts with acute respiratory illnesses, fevers, and laboratory-confirmed influenza. Influenza Other Respir Viruses 2021; 16:101-112. [PMID: 34519426 PMCID: PMC8692816 DOI: 10.1111/irv.12904] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/15/2021] [Accepted: 08/16/2021] [Indexed: 01/29/2023] Open
Abstract
BACKGROUND We established cohorts to assess associations between viral influenza and cognitive development to inform the value proposition of vaccination. METHODS From 2014 through 2017, we called women seeking care at four prenatal clinics in Panama and El Salvador to identify acute respiratory illnesses (ARIs). Within 2 weeks of childbirth, mothers were asked to enroll their neonates in the cognitive development study. Staff obtained nasopharyngeal swabs from children with febrile ARIs for real-time reverse transcription polymerase chain reaction (rtPCR) detection of viral RNA. Toddlers were administered Bayley developmental tests at ages 12 and 18-24 months. We used multilevel linear regression to explore associations between Bayley scores, ARIs, fever, and laboratory-confirmed influenza, controlling for maternal respiratory or Zika illnesses, infant influenza vaccination, birth during influenza epidemics, and the number of children in households. RESULTS We enrolled 1567 neonates of which 68% (n = 1062) underwent developmental testing once and 40% (n = 623) twice. Children with previous ARIs scored an average of 3 points lower on their cognitive scores than children without ARIs (p = 0.001). Children with previous fevers scored an average of 2.1 points lower on their cognitive scores than afebrile children (p = 0.02). In the second year, children with previous laboratory-confirmed influenza scored 4 points lower on their cognitive scores than children without influenza (p = 0.04, after controlling for first Bayley cognitive scores). CONCLUSIONS ARIs and fever during infancy were associated with lower Bayley scores at 12 months, and laboratory-confirmed influenza was associated with lower cognitive scores at 24 months suggesting the potential value of vaccination to prevent non-respiratory complications of influenza.
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Affiliation(s)
| | | | - William Davis
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Arlene Calvo
- Gorgas Institute, Panama City, Panama.,University of South Florida, Tampa, Florida, USA
| | - Natalie Olson
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Lauren Grant
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | | | - Vic Veguilla
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Rafael Rauda
- National Institute of Health of El Salvador, San Salvador, El Salvador
| | | | | | | | | | - Rachael Porter
- Centers for Disease Control and Prevention, Atlanta, GA, USA
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Mesenchymal stem cell-derived exosomes improve motor function and attenuate neuropathology in a mouse model of Machado-Joseph disease. Stem Cell Res Ther 2020; 11:222. [PMID: 32513306 PMCID: PMC7278177 DOI: 10.1186/s13287-020-01727-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 04/19/2020] [Accepted: 05/12/2020] [Indexed: 12/12/2022] Open
Abstract
Background Machado-Joseph disease is the most common autosomal dominant hereditary ataxia worldwide without effective treatment. Mesenchymal stem cells (MSCs) could slow the disease progression, but side effects limited their clinical application. Besides, MSC-derived exosomes exerted similar efficacy and have many advantages over MSCs. The aim of this study was to examine the efficacy of MSC-derived exosomes in YACMJD84.2 mice. Methods Rotarod performance was evaluated every 2 weeks after a presymptomatic administration of intravenous MSC-derived exosomes twice in YACMJD84.2 mice. Loss of Purkinje cells, relative expression level of Bcl-2/Bax, cerebellar myelin loss, and neuroinflammation were assessed 8 weeks following treatment. Results MSC-derived exosomes were isolated and purified through anion exchange chromatography. Better coordination in rotarod performance was maintained for 6 weeks in YACMJD84.2 mice with exosomal treatment, compared with those without exosomal treatment. Neuropathological changes including loss of Purkinje cells, cerebellar myelin loss, and neuroinflammation were also attenuated 8 weeks after exosomal treatment. The higher relative ratio of Bcl-2/Bax was consistent with the attenuation of loss of Purkinje cells. Conclusions MSC-derived exosomes could promote rotarod performance and attenuate neuropathology, including loss of Purkinje cells, cerebellar myelin loss, and neuroinflammation. Therefore, MSC-derived exosomes have a great potential in the treatment of Machado-Joseph disease.
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Kim GH, Yi SS. Verification with the utility of an established rapid assessment of brain safety for newly developed vaccines. Lab Anim Res 2019; 35:25. [PMID: 32219059 PMCID: PMC7081575 DOI: 10.1186/s42826-019-0027-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 11/14/2019] [Indexed: 11/10/2022] Open
Abstract
In the twenty-first century, high contagious infectious diseases such as SARS (Severe Acute Respiratory Syndrome), MERS (Middle East Respiratory Syndrome), FMD (Foot-and-Mouth Disease) and AI (Avian Influenza) have become very prevalent, causing treat harm to humans and animals in aspect of public health, and economical issues. The critical problem is that newly-reported infectious diseases that humans firstly experience are expected to continue to emerge, and these diseases will be spreading out rapidly. Therefore, rapid and safe supplies of effective vaccines are most pivotal to prevent the rapid prevalent of new infection, but international standards or assessing protocol the safety of urgent vaccines are not established well. In our previous study, since we established a module to assess the brain safety of urgent vaccines, therefore, it is necessary to verify that this established module for assessing brain safety could work effectively in commercially available two vaccines (one killed- and on live-vaccines). We compared the results of Evans blue (EB) assay and qPCR analysis by injection of two kinds of vaccines, PBS and Lipopolysaccharide (LPS) under the condition of the module previously reported. We confirmed that the brain safety test module for urgent vaccine we established is very reproducible. Therefore, it is believed that this vaccine safety testing method can be used to validate brain safety when prompt supply of a newly developed vaccines is needed.
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Affiliation(s)
- Gwang-Ho Kim
- Department of Biomedical Laboratory Science, Soonchunhyang University, Asan, 31538 Republic of Korea
| | - Sun Shin Yi
- Department of Biomedical Laboratory Science, Soonchunhyang University, Asan, 31538 Republic of Korea
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