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Kim YR, Yun EB, Ryu DI, Kim BH, Kim JS, Kim YS, Kang JH, Cho EH, Koh JT, Lim HP, Park C, Lee BN. The potential bone regeneration effects of leptin- and osteolectin-coated 3D-printed PCL scaffolds: an in vivostudy. Biomed Mater 2024; 19:045008. [PMID: 38688311 DOI: 10.1088/1748-605x/ad45d7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 04/30/2024] [Indexed: 05/02/2024]
Abstract
This study investigated the effectiveness of bone regeneration upon the application of leptin and osteolectin to a three-dimensional (3D) printed poly(ϵ-caprolactone) (PCL) scaffold. A fused deposition modeling 3D bioprinter was used to fabricate scaffolds with a diameter of 4.5 mm, a height of 0.5 mm, and a pore size of 420-520 nm using PCL (molecular weight: 43 000). After amination of the scaffold surface for leptin and osteolectin adhesion, the experimental groups were divided into the PCL scaffold (control), the aminated PCL (PCL/Amine) scaffold, the leptin-coated PCL (PCL/Leptin) scaffold, and the osteolectin-coated PCL (PCL/Osteo) scaffold. Next, the water-soluble tetrazolium salt-1 (WST-1) assay was used to assess cell viability. All groups exhibited cell viability rates of >100%. Female 7-week-old Sprague-Dawley rats were used forin vivoexperiments. Calvarial defects were introduced on the rats' skulls using a 5.5 mm trephine bur. The rats were divided into the PCL (control), PCL/Leptin, and PCL/Osteo scaffold groups. The scaffolds were then inserted into the calvarial defect areas, and the rats were sacrificed after 8-weeks to analyze the defect area. Micro-CT analysis indicated that the leptin- and osteolectin-coated scaffolds exhibited significantly higher bone regeneration. Histological analysis revealed new bone and blood vessels in the calvarial defect area. These findings indicate that the 3D-printed PCL scaffold allows for patient-customized fabrication as well as the easy application of proteins like leptin and osteolectin. Moreover, leptin and osteolectin did not show cytotoxicity and exhibited higher bone regeneration potential than the existing scaffold.
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Affiliation(s)
- Young-Ran Kim
- Department of Biomedical Engineering, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Eun-Byeol Yun
- College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Dam-In Ryu
- College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Bo-Hye Kim
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, Republic of Korea
| | - Joong-Seon Kim
- Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, Republic of Korea
| | - Ye-Seul Kim
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jin-Ho Kang
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Eun-Hyo Cho
- Department of Conservative Dentistry, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Jeong-Tae Koh
- Department of Pharmacology and Dental Therapeutics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Hyun-Pil Lim
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Chan Park
- Department of Prosthodontics, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
| | - Bin-Na Lee
- Department of Conservative Dentistry, College of Dentistry, Chonnam National University, Gwangju, Republic of Korea
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Sánchez-Aguilar M, Ibarra-Lara L, Cano-Martínez A, Soria-Castro E, Castrejón-Téllez V, Pavón N, Osorio-Yáñez C, Díaz-Díaz E, Rubio-Ruíz ME. PPAR Alpha Activation by Clofibrate Alleviates Ischemia/Reperfusion Injury in Metabolic Syndrome Rats by Decreasing Cardiac Inflammation and Remodeling and by Regulating the Atrial Natriuretic Peptide Compensatory Response. Int J Mol Sci 2023; 24:ijms24065321. [PMID: 36982395 PMCID: PMC10049157 DOI: 10.3390/ijms24065321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Metabolic syndrome (MetS) is a cluster of factors that increase the risk of developing diabetes, stroke, and heart failure. The pathophysiology of injury by ischemia/reperfusion (I/R) is highly complex and the inflammatory condition plays an important role by increasing matrix remodeling and cardiac apoptosis. Natriuretic peptides (NPs) are cardiac hormones with numerous beneficial effects mainly mediated by a cell surface receptor named atrial natriuretic peptide receptor (ANPr). Although NPs are powerful clinical markers of cardiac failure, their role in I/R is still controversial. Peroxisome proliferator-activated receptor α agonists exert cardiovascular therapeutic actions; however, their effect on the NPs’ signaling pathway has not been extensively studied. Our study provides important insight into the regulation of both ANP and ANPr in the hearts of MetS rats and their association with the inflammatory conditions caused by damage from I/R. Moreover, we show that pre-treatment with clofibrate was able to decrease the inflammatory response that, in turn, decreases myocardial fibrosis, the expression of metalloprotease 2 and apoptosis. Treatment with clofibrate is also associated with a decrease in ANP and ANPr expression.
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Affiliation(s)
- María Sánchez-Aguilar
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Luz Ibarra-Lara
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Agustina Cano-Martínez
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
| | - Elizabeth Soria-Castro
- Department of Cardiovascular Biomedicine, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico;
| | - Vicente Castrejón-Téllez
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
| | - Natalia Pavón
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Citlalli Osorio-Yáñez
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228, Ciudad de México 04510, Mexico;
- Laboratorio de Fisiología Cardiovascular y Transplante Renal, Unidad de Investigación UNAM-INCICH, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Eulises Díaz-Díaz
- Department of Reproductive Biology, Instituto Nacional de Ciencias Médicas y de la Nutrición “Salvador Zubirán”, Vasco de Quiroga 15, Sección XVI, Tlalpan, México City 14000, Mexico;
| | - María Esther Rubio-Ruíz
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
- Correspondence:
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Cid E, de la Prida LM. Methods for single-cell recording and labeling in vivo. J Neurosci Methods 2019; 325:108354. [PMID: 31302156 DOI: 10.1016/j.jneumeth.2019.108354] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 07/07/2019] [Accepted: 07/07/2019] [Indexed: 01/29/2023]
Abstract
Targeting individual neurons in vivo is a key method to study the role of single cell types within local and brain-wide microcircuits. While novel technological developments now permit assessing activity from large number of cells simultaneously, there is currently no better solution than glass micropipettes to relate the physiology and morphology of single-cells. Sharp intracellular, juxtacellular, loose-patch and whole-cell approaches are some of the configurations used to record and label individual neurons. Here, we review procedures to establish successful electrophysiological recordings in vivo followed by appropriate labeling for post hoc morphological analysis. We provide operational recommendations for optimizing each configuration and a generic framework for functional, neurochemical and morphological identification of the different cell-types in a given region. Finally, we highlight emerging approaches that are challenging our current paradigms for single-cell recording and labeling in the living brain.
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Affiliation(s)
- Elena Cid
- Instituto Cajal, CSIC, Ave Doctor Arce 37, Madrid, 28002, Spain
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