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Pettian MS, Plepis AMDG, Martins VDCA, dos Santos GR, Pinto CAL, Galdeano EA, Calegari ARA, de Moraes CA, da Cunha MR. Use of an anionic collagen matrix made from bovine intestinal serosa for in vivo repair of cranial defects. PLoS One 2018; 13:e0197806. [PMID: 30001321 PMCID: PMC6042682 DOI: 10.1371/journal.pone.0197806] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 05/09/2018] [Indexed: 12/15/2022] Open
Abstract
Polymeric biomaterials composed of extracellular matrix components possess osteoconductive capacity that is essential for bone healing. The presence of collagen and the ability to undergo physicochemical modifications render these materials a suitable alternative in bone regenerative therapies. The objective of this study was to evaluate the osteogenic capacity of collagen-based matrices (native and anionic after alkaline hydrolysis) made from bovine intestinal serosa (MBIS). Twenty-five animals underwent surgery to create a cranial defect to be filled with native and anionic collagen matrixes, mmineralized and non mineralized. The animals were killed painlessly 6 weeks after surgery and samples of the wound area were submitted to routine histology and morphometric analysis. In the surgical area there was new bone formation projecting from the margins to the center of the defect. More marked bone neoformation occurred in the anionic matrices groups in such a way that permitted union of the opposite margins of the bone defect. The newly formed bone matrix exhibited good optical density of type I collagen fibers. Immunoexpression of osteocalcin by osteocytes was observed in the newly formed bone. Morphometric analysis showed a greater bone volume in the groups receiving the anionic matrices compared to the native membranes. Mineralization of the biomaterial did not increase its osteoregenerative capacity. In conclusion, the anionic matrix exhibits osteoregenerative capacity and is suitable for bone reconstruction therapies.
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Affiliation(s)
- Mariane Silva Pettian
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Ana Maria de Guzzi Plepis
- Interunit Postgraduate Program in Bioengineering, University of São Paulo, USP, São Carlos-SP, Brazil
- Institute of Chemistry of São Carlos, University of São Paulo, USP, São Carlos-SP, Brazil
| | | | - Geovane Ribeiro dos Santos
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Clovis Antônio Lopes Pinto
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
- Department of Anatomical Pathology, A.C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Ewerton Alexandre Galdeano
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | | | - Carlos Alberto de Moraes
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
| | - Marcelo Rodrigues da Cunha
- Department of Morphology and Pathology, Faculty of Medicine of Jundiaí, São Paulo, Brazil, Jundiaí –SP, Brazil
- Interunit Postgraduate Program in Bioengineering, University of São Paulo, USP, São Carlos-SP, Brazil
- * E-mail:
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Yamada K, Tanaka T, Zou LB, Senzaki K, Yano K, Osada T, Ana O, Ren X, Kameyama T, Nabeshima T. Long-term deprivation of oestrogens by ovariectomy potentiates beta-amyloid-induced working memory deficits in rats. Br J Pharmacol 1999; 128:419-27. [PMID: 10510453 PMCID: PMC1571652 DOI: 10.1038/sj.bjp.0702811] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
1 In the present study, we examined whether deprivation of oestrogens by ovariectomy could modify learning and memory deficits caused by a continuous intracerebroventricular (i.c.v.) infusion of amyloid beta-peptide (Abeta), the major constituent of senile plaques in AD. 2 Neither long-term (3 months) nor short-term (1 month), deprivation of oestrogens by ovariectomy caused a significant impairment in spatial learning and memory in a water maze and spontaneous alternation behaviour in a Y-maze. 3 A continuous i.c.v. infusion of Abeta-(1-42) caused spatial learning and memory deficits in both ovariectomized and sham-operated rats. 4 The Abeta-induced working memory deficits were significantly potentiated in ovariectomized rats compared with sham-operated rats when mnemonic ability was examined 3 months after ovariectomy. 5 These results suggest that long-term deprivation of oestrogens induced by ovariectomy increases susceptibility to memory deficits produced by Abeta-(1-42) in rats.
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Affiliation(s)
- Kiyofumi Yamada
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Tomoko Tanaka
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Meijo University, Tenpaku-ku, Nagoya 468-0077, Japan
| | - Li-Bo Zou
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Kouji Senzaki
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Kohji Yano
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Takashi Osada
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Olariu Ana
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Xiuhai Ren
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
| | - Tsutomu Kameyama
- Department of Chemical Pharmacology, Faculty of Pharmaceutical Sciences, Meijo University, Tenpaku-ku, Nagoya 468-0077, Japan
- Japan Institute of Psychopharmacology, Higashi-ku, Nagoya 461-8508, Japan
| | - Toshitaka Nabeshima
- Department of Neuropsychopharmacology and Hospital Pharmacy, Nagoya University School of Medicine, Showa-ku, Nagoya 466-8560, Japan
- Author for correspondence:
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