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Logsdon AF, Erickson MA, Herbert MJ, Noonan C, Foresi BD, Qiu J, Lim YP, Banks WA, Stonestreet BS. Inter-alpha inhibitor proteins attenuate lipopolysaccharide-induced blood-brain barrier disruption in neonatal mice. Exp Neurol 2023; 370:114563. [PMID: 37806514 DOI: 10.1016/j.expneurol.2023.114563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 09/21/2023] [Accepted: 10/05/2023] [Indexed: 10/10/2023]
Abstract
There is a paucity of information regarding efficacious pharmacological neuroprotective strategies to attenuate or reduce brain injury in neonates. Lipopolysaccharide (LPS) disrupts blood-brain barrier (BBB) function in adult rodents and increases inflammation in adults and neonates. Human blood-derived Inter-alpha Inhibitor Proteins (IAIPs) are neuroprotective, improve neonatal survival after LPS, and attenuate LPS-induced disruption of the BBB in adult male mice. We hypothesized that LPS also disrupts the function of the BBB in neonatal mice and that IAIPs attenuate the LPS-induced BBB disruption in male and female neonatal mice. IAIPs were administered to neonatal mice after LPS and BBB permeability quantified with intravenous 14C-sucrose and 99mTc-albumin. Although repeated high doses (3 mg/kg) of LPS in neonates resulted in high mortality rates and a robust increase in BBB permeability, repeated lower doses (1 mg/kg) of LPS resulted in lower mortality rates and disruption of the BBB in both male and female neonates. IAIP treatment attenuated disruption of the BBB similarly to sucrose and albumin after exposure to low-dose LPS in neonatal mice. Exposure to low-dose LPS elevated IAIP concentrations in blood, but it did not appear to increase the systemic levels of Pre-alpha inhibitor (PaI), one of the family members of the IAIPs that contains heavy chain 3. We conclude that IAIPs attenuate LPS-related disruption of the BBB in both male and female neonatal mice.
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Affiliation(s)
- Aric F Logsdon
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA.
| | - Michelle A Erickson
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Melanie J Herbert
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Cassidy Noonan
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA
| | - Brian D Foresi
- College of Medicine, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Joseph Qiu
- ProThera Biologics, Inc., Providence, RI 02903, USA
| | - Yow-Pin Lim
- ProThera Biologics, Inc., Providence, RI 02903, USA; Department of Pathology and Laboratory Medicine, The Alpert Medical School of Brown University, Providence, RI, 02905, USA
| | - William A Banks
- Geriatric Research Education and Clinical Center (GRECC), Veterans Affairs Puget Sound Health Care System, Seattle, WA 98108, USA; Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Barbara S Stonestreet
- The Alpert Medical School of Brown University, Department of Pediatrics, Women & Infants Hospital of Rhode Island, Providence, RI 02905, USA
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Neuroprotective Effects of Betulinic Acid Hydroxamate in Intraventricular Hemorrhage-Induced Brain Damage in Immature Rats. Nutrients 2022; 14:nu14245286. [PMID: 36558445 PMCID: PMC9786890 DOI: 10.3390/nu14245286] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
Intraventricular hemorrhage (IVH) is an important cause of long-term disability in extremely preterm infants, with no current treatment. We aimed to study in an IVH model in immature rats the neuroprotective effect of betulinic acid hydroxamate (BAH), a B55α/PP2A activator that inhibits the activity of the hypoxia-inducing factor prolyl-hydroxylase type 2. IVH was induced in 1-day-old (P1) Wistar rats by the left periventricular injection of Clostridial collagenase. Then, pups received i.p. vehicle or BAH 3 mg/kg single dose. At P6, P14 and P45, brain damage (area of damage, neurobehavioral deficits, Lactate/N-acetylaspartate ratio), white matter injury (WMI: corpus callosum atrophy and myelin basic protein signal reduction) and inflammation (TLR4, NF-κB and TNFα expression), excitotoxicity (Glutamate/N-acetylspartate) and oxidative stress (protein nitrosylation) were evaluated. BAH treatment did not reduce the volume of brain damage, but it did reduce perilesional tissue damage, preventing an IVH-induced increase in Lac/NAA. BAH restored neurobehavioral performance at P45 preventing WMI. BAH prevented an IVH-induced increase in inflammation, excitotoxicity and oxidative stress. In conclusion, in immature rats, BAH reduced IVH-induced brain damage and prevented its long-term functional consequences, preserving normal myelination in a manner related to the modulation of inflammation, excitotoxicity and oxidative stress.
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Alves-Martinez P, Atienza-Navarro I, Vargas-Soria M, Carranza-Naval MJ, Infante-Garcia C, Benavente-Fernandez I, Del Marco A, Lubian-Lopez S, Garcia-Alloza M. Caffeine Restores Neuronal Damage and Inflammatory Response in a Model of Intraventricular Hemorrhage of the Preterm Newborn. Front Cell Dev Biol 2022; 10:908045. [PMID: 36035990 PMCID: PMC9411947 DOI: 10.3389/fcell.2022.908045] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 05/30/2022] [Indexed: 11/13/2022] Open
Abstract
Germinal matrix-intraventricular hemorrhage (GM-IVH) is the most frequent intracranial hemorrhage in the preterm infant (PT). Long-term GM-IVH-associated sequelae include cerebral palsy, sensory and motor impairment, learning disabilities, or neuropsychiatric disorders. The societal and health burden associated with GM-IVH is worsened by the fact that there is no successful treatment to limit or reduce brain damage and neurodevelopment disabilities. Caffeine (Caf) is a methylxanthine that binds to adenosine receptors, regularly used to treat the apnea of prematurity. While previous studies support the beneficial effects at the brain level of Caf in PT, there are no studies that specifically focus on the role of Caf in GM-IVH. Therefore, to further understand the role of Caf in GM-IVH, we have analyzed two doses of Caf (10 and 20 mg/kg) in a murine model of the disease. We have analyzed the short (P14) and long (P70) effects of the treatment on brain atrophy and neuron wellbeing, including density, curvature, and phospho-tau/total tau ratio. We have analyzed proliferation and neurogenesis, as well as microglia and hemorrhage burdens. We have also assessed the long-term effects of Caf treatment at cognitive level. To induce GM-IVH, we have administered intraventricular collagenase to P7 CD1 mice and have analyzed these animals in the short (P14) and long (P70) term. Caf showed a general neuroprotective effect in our model of GM-IVH of the PT. In our study, Caf administration diminishes brain atrophy and ventricle enlargement. Likewise, Caf limits neuronal damage, including neurite curvature and tau phosphorylation. It also contributes to maintaining neurogenesis in the subventricular zone, a neurogenic niche that is severely affected after GM-IVH. Furthermore, Caf ameliorates small vessel bleeding and inflammation in both the cortex and the subventricular zone. Observed mitigation of brain pathological features commonly associated with GM-IVH also results in a significant improvement of learning and memory abilities in the long term. Altogether, our data support the promising effects of Caf to reduce central nervous system complications associated with GM-IVH.
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Affiliation(s)
- Pilar Alves-Martinez
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Isabel Atienza-Navarro
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Maria Vargas-Soria
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Maria Jose Carranza-Naval
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Salus-Infirmorum, University of Cadiz, Cadiz, Spain
| | - Carmen Infante-Garcia
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Isabel Benavente-Fernandez
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Area of Pediatrics, Department of Child and Mother Health and Radiology, Medical School, University of Cadiz, Cadiz, Spain
- Section of Neonatology, Division of Pediatrics, Hospital Universitario Puerta del Mar, Cadiz, Spain
| | - Angel Del Marco
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
| | - Simon Lubian-Lopez
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- Section of Neonatology, Division of Pediatrics, Hospital Universitario Puerta del Mar, Cadiz, Spain
- *Correspondence: Simon Lubian-Lopez, ; Monica Garcia-Alloza,
| | - Monica Garcia-Alloza
- Division of Physiology, School of Medicine, Universidad de Cadiz, Cadiz, Spain
- Biomedical Research and Innovation Institute of Cádiz Cadiz (INiBICA) Research Unit, Puerta del Mar University Hospital University of Cadiz, Cadiz, Spain
- *Correspondence: Simon Lubian-Lopez, ; Monica Garcia-Alloza,
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