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Araujo AM, Cruz LM, Gomes M, Gallo B, Valente LMM, Berrueta LA. Characterization of polyphenols in the methanol leaf extract of Bathysa gymnocarpa (Rubiaceae) by HPLC-DAD-ESI-MS/MS. Nat Prod Res 2024; 38:2711-2714. [PMID: 37021799 DOI: 10.1080/14786419.2023.2192932] [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: 11/14/2022] [Accepted: 03/13/2023] [Indexed: 04/07/2023]
Abstract
The species Bathysa gymnocarpa K.Schum is a tree belonging to the Rubiaceae family, endemic in Brazil. So far, there are reports neither of phytochemical work nor of biological evaluation of it. The analysis by High Performance Liquid Chromatography coupled to a Diode Array Detector and a tandem Mass Spectrometer with an Electrospray Ionization source (HPLC-DAD-ESI-MS/MS) of its crude extract allowed to characterize in a complex mixture, without isolation, fourteen compounds, being two as cinnamic acid derivatives, and the others as mono-, di- and triglycosilated derivatives of the flavonols quercetin and kaempferol. These compounds are reported for the first time in Bathysa spp.
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Affiliation(s)
- Ariel M Araujo
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Lucas M Cruz
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Mário Gomes
- Centro Nacional de Conservação da Flora, Jardim Botânico do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Blanca Gallo
- Departamento de Química Analítica, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Bilbao, Spain
| | - Ligia M M Valente
- Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Luis A Berrueta
- Departamento de Química Analítica, Facultad de Ciencia y Tecnología, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Bilbao, Spain
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Sarandy MM, Pelinsari SM, de Souza LM, Novaes RD, Zanuncio VV, Gonçalves RV. l-arginine and l-citrulline supplementation accelerates second intention wound healing in iNOS knockout mice. J Funct Foods 2023. [DOI: 10.1016/j.jff.2022.105395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Silva LP, Santos EC, Borges BA, Veloso MP, Chagas-Paula DA, Gonçalves RV, Novaes RD. Tagitinin F has anti-inflammatory, anti-nociceptive and anti-matrix metalloproteinase properties: An in silico, in vitro and in vivo study. Pharmacol Res 2020; 164:105303. [PMID: 33212290 DOI: 10.1016/j.phrs.2020.105303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/18/2020] [Accepted: 11/09/2020] [Indexed: 01/13/2023]
Abstract
Sesquiterpene lactones (SL) are natural bioactive molecules indicated as potential scaffolds for anti-inflammatory and analgesic drug design. However, their anti-inflammatory applicability remains underestimated since the impact of SL on inflammatory nociception and tissue repair are overlooked. Thus, we used an integrated in silico, in vitro and in vivo framework to investigate the impact of tagitinin F (TAG-F) on lipopolysaccharide (LPS)-challenged macrophages, excisional skin wounds, and carrageenan-induced paw edema and mechanical hyperalgesia in mice. RAW 264.7 macrophages in culture were challenged with LPS and treated with TAG-F (5, 10, 50 and 100 μM). The paw of BALB/c mice was injected with carrageenan and treated with 0.5% and 1% TAG-F. Excisional wounds were also produced in BALB/c mice and treated with 0.5% and 1% TAG-F. Our results indicated a consistent concentration-dependent downregulation in 5-lipoxygenase, cyclooxygenase 1 and 2 (COX-1 and COX-2), matrix metalloproteinase 1 and 2 (MMP-1 and MMP-2) activities; as well as attenuation in prostaglandin E2 (PGE2), leukotriene B4 (LTB4) and tumor necrosis factor-α (TNF-α) production in both in vitro and in vivo models. In vivo, TAG-F also attenuated carrageenan-induced paw edema and mechanical hyperalgesia in mice. From the excisional skin wound, TAG-F was still effective in reducing neutrophils and macrophages infiltration and stimulating collagen deposition in the scar tissue, accelerating tissue maturation. Together, our findings indicate that the anti-inflammatory effect of TAG-F is more comprehensive than previously suggested, exerting a significant impact on the control of edema, inflammatory pain and modulating central metabolic processes linked to skin wound healing.
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Affiliation(s)
- Laíla Pereira Silva
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil; Center of Heath Sciences, University Jose do Rosario Vellano, Minas Gerais, Brazil
| | - Eliziária Cardoso Santos
- School of Medicine, Federal University of Jequitinhonha and Mucuri Valleys, Diamantina, Minas Gerais, 39100-000, Brazil
| | - Bruno Arantes Borges
- Institute of Chemistry, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil
| | - Marcia Paranho Veloso
- Faculty of Pharmaceutical Sciences, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil
| | | | | | - Rômulo Dias Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, Minas Gerais, 37130-001, Brazil.
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Acidic Phospholipase A2-Peptide Derivative Modulates Oxidative Status and Microstructural Reorganization of Scar Tissue after Cutaneous Injury. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:8273986. [PMID: 32733589 PMCID: PMC7369679 DOI: 10.1155/2020/8273986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/29/2020] [Accepted: 06/01/2020] [Indexed: 12/19/2022]
Abstract
From in vitro and in vivo models, the proliferative and healing potential of an acidic phospholipase A2 (LAPLA2) from Lachesis muta venom was investigated. The LAPLA2 proliferative activity was evaluated on fibroblasts and keratinocytes cultured, and the antioxidant and regenerative potential of LAPLA2 was analyzed in a murine model. The animal study consisted of four groups: C (negative control): 0.9% NaCl; SS (positive control): 1% silver sulfadiazine; L1 group: 0.5% LAPLA2; and L2 group: 0.25% LAPLA2. Wounds were topically treated daily for 12 days, and scar tissue samples were collected every 4 days. In vitro, LAPLA2 stimulated marked time-dependent cell proliferation. In vivo, it increased the antioxidant activity of superoxide dismutase (SOD) and catalase (CAT) and decreased malondialdehyde (MDA) and carbonyl protein (CP) levels in scar tissue treated with LAPLA2 at 0.5%. This peptide was effective in stimulating cellular proliferation, neoangiogenesis, type I and III collagen deposition, and maturation in a time-dependent-way, reducing the time required for wound closure. Our results indicated that LAPLA2 presented a remarkable potential in improving the oxidative status and microstructural reorganization of the scar tissue by stimulation of cellularity, angiogenesis, colagenogenesis, and wound contraction, suggesting that the peptide could be a potential candidate for a new healing drug.
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Kaizawa Y, Franklin A, Leyden J, Behn AW, Tulu US, Sotelo Leon D, Wang Z, Abrams GD, Chang J, Fox PM. Augmentation of chronic rotator cuff healing using adipose-derived stem cell-seeded human tendon-derived hydrogel. J Orthop Res 2019; 37:877-886. [PMID: 30747435 DOI: 10.1002/jor.24250] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 01/24/2019] [Indexed: 02/04/2023]
Abstract
Rotator cuff (RTC) repair outcomes are unsatisfactory due to the poor healing capacity of the tendon bone interface (TBI). In our preceding study, tendon hydrogel (tHG), which is a type I collagen rich gel derived from human tendons, improved biomechanical properties of the TBI in a rat chronic RTC injury model. Here we investigated whether adipose-derived stem cell (ASC)-seeded tHG injection at the repair site would further improve RTC healing. Rats underwent bilateral supraspinatus tendon detachment. Eight weeks later injured supraspinatus tendons were repaired with one of four treatments. In the control group, standard transosseous suture repair was performed. In the ASC, tHG, tHGASC groups, ASC in media, tHG, and ASC-seeded tHG were injected at repair site after transosseous suture repair, respectively. Eight weeks after repair, the TBI was evaluated biomechanically, histologically, and via micro CT. Implanted ASCs were detected in ASC and tHGASC groups 7 weeks after implantation. ACS implantation improved bone morphometry at the supraspinatus insertion on the humerus. Injection of tHG improved biomechanical properties of the repaired TBI. RTC healing in tHGASC group was significantly better than control but statistically equivalent to the tHG group based on biomechanical properties, fibrocartilage area at the TBI, and bone morphometry at the supraspinatus insertion. In a rat RTC chronic injury model, no biomechanical advantage was gained with ASC augmentation of tHG. Clinical Significance: Tendon hydrogel augmentation with adipose derived stem cells does not significantly improve TBI healing over tHG alone in a chronic rotator cuff injury model. © 2019 Orthopaedic Research Society. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
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Affiliation(s)
- Yukitoshi Kaizawa
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Austin Franklin
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Jacinta Leyden
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Anthony W Behn
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Palo Alto, California, 94305
| | - Ustun S Tulu
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304
| | - Daniel Sotelo Leon
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Zhen Wang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Geoffrey D Abrams
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 300 Pasteur Drive, Palo Alto, California, 94305
| | - James Chang
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
| | - Paige M Fox
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Stanford University Medical Center, 770 Welch Rd., Suite 400, Palo Alto, California, 94304.,Division of Plastic and Reconstructive Surgery, Veterans Affairs Palo Alto Health Care System, 3801 Miranda Ave., Palo Alto, California, 94304
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Sarandy MM, Miranda LL, Altoé LS, Novaes RD, Zanuncio VV, Leite JPV, Gonçalves RV. Strychnos pseudoquina modulates the morphological reorganization of the scar tissue of second intention cutaneous wounds in rats. PLoS One 2018; 13:e0195786. [PMID: 29649320 PMCID: PMC5896999 DOI: 10.1371/journal.pone.0195786] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 03/29/2018] [Indexed: 12/12/2022] Open
Abstract
Natural substances are used in folk medicines to treat injuries. Strychnos pseudoquina has scarring, antipyretic, and antimalarial actions. The present study aimed to analyze the effect of S. pseudoquina on cutaneous wound healing in rats. The S. pseudoquina extract was submitted to phytochemical prospection. The levels of flavonoids and total phenolic compounds in the extract were 50.7 mg/g and 2.59 mg/g, respectively. Thirty Wistar rats were individualized in cages with food and water ad libitum (registration no. 730/2014). After anesthesia, three circular wounds (12mm diameter) were made in the animals, which were randomly separated into five treatments: Sal, saline; VO, ointment vehicles (lanolin and Vaseline); SS, positive control (silver sulfadiazine 1%); LE 5, freeze-dried extract 5%; and LE 10, lyophilized extract 10%. The animals were treated with the ointment daily for 21 days. Every seven days, the area and the rate of wound contraction were evaluated. Tissue samples were removed for histopathological analysis of the number of mast cells, elastic and collagen fibers, and biochemical analyses, quantification of malondialdehyde (MDA), carbonylated proteins (PCN), superoxide dismutase (SOD), catalase (CAT), transforming growth factor β (TGF-β), Interleukin 10 (IL-10) and tumor necrosis factor (TNF). The number of mast cells, collagen and elastic fibers in the rat wounds were higher in the treatments with the plant. The extract also stimulated the activity of antioxidant enzymes, particularly SOD, presenting high levels, and maintained low levels of PCN. The TGF-β and IL-10 concentration was higher in the LE5 and LE10 treatment of the extract than in the Sal, OV and SS treatments on day 7. The ointment based on S. pseudoquina closed the wound faster and accelerated wound healing in animals.
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Affiliation(s)
| | - Lyvia Lopes Miranda
- Institute of Biomedical Sciences, Department General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Luciana Schulthais Altoé
- Institute of Biomedical Sciences, Department General Biology, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Rômulo Dias Novaes
- Department of Structural Biology, Universidade Federal de Alfenas, Alfenas, Minas Gerais, Brazil
| | - Virgínia Vinha Zanuncio
- Department of Medicine and Nursing, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - João Paulo Viana Leite
- Department of Agricultural Biochemistry, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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Rosa DF, Sarandy MM, Novaes RD, Freitas MB, do Carmo Gouveia Pelúzio M, Gonçalves RV. High-Fat Diet and Alcohol Intake Promotes Inflammation and Impairs Skin Wound Healing in Wistar Rats. Mediators Inflamm 2018; 2018:4658583. [PMID: 30140168 PMCID: PMC6081583 DOI: 10.1155/2018/4658583] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/24/2018] [Accepted: 06/24/2018] [Indexed: 12/12/2022] Open
Abstract
The wound-healing process is complex and remains a challenging process under the influence of several factors, including eating habits. As improper diets may lead to disorders such as dyslipidemia, insulin resistance, and chronic inflammation, potentially affecting the tissue ability to heal, we decided to investigate the effect of a high-fat diet and alcohol intake on the inflammatory process and skin wound healing in Wistar rats. Male rats (n = 30) were individually housed in cages with food and water ad libitum (registration number 213/2014). After anesthesia, at day 40, three circular wounds (12 mm diameter) were made on the back of each animal, which were then randomly assorted into five treatment groups: C1 (control 1)-water via gavage and standard chow diet; C2 (control 2)-water (no gavage) and standard chow diet; AL (alcohol)-water (no gavage) and alcohol (40%) via gavage and standard chow diet; HF (high fat)-water (no gavage) and high-fat diet (50%); and HF + AL (alcohol/high fat)-water (no gavage), alcohol (40%) via gavage, and high-fat diet. Animals were treated for 61 days. Every seven days, the area and the rate of wound contraction were evaluated. Tissue samples were removed for histopathological analysis and biochemical analyses. Our results showed that wound contraction was not complete in the HF + AL rats. Two specific indices of wound-healing impairment (total cell number and levels of the inflammatory cytokine TGF-β) were increased in the HF + AL rats. We also observed decreased type I and III collagen fibers in the HF, AL, and HF + AL groups and increased oxidative stress markers in the same groups. We suggest that a high-fat diet combined with alcohol intake contributed to delayed skin wound healing through increase of the inflammatory phase and promoting oxidative stress, which may have led to morphological alterations and impaired matrix remodeling.
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Affiliation(s)
| | | | - Rômulo Dias Novaes
- 3Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, MG, Brazil
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Hydroethanolic Extract of Strychnos pseudoquina Accelerates Skin Wound Healing by Modulating the Oxidative Status and Microstructural Reorganization of Scar Tissue in Experimental Type I Diabetes. BIOMED RESEARCH INTERNATIONAL 2017; 2017:9538351. [PMID: 29057272 PMCID: PMC5615956 DOI: 10.1155/2017/9538351] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/15/2017] [Revised: 06/28/2017] [Accepted: 07/13/2017] [Indexed: 01/13/2023]
Abstract
The effect of topical application of ointment based on Strychnos pseudoquina hydroethanolic extract in the cutaneous wounds healing in diabetic rats was evaluated. Samples of S. pseudoquina were submitted to phytochemical prospection and in vitro antioxidant assay. Thirty Wistar rats were divided into 5 groups: Sal-wounds treated with 0.9% saline solution; VH-wounds treated with 0.6 g of lanolin cream (vehicle); SS-wounds treated with silver sulfadiazine cream (10 mg/g); ES5- and ES10-wounds treated with an ointment of S. pseudoquina extract, 5% and 10%, respectively. Fragments of wounds were removed for histological and biochemical analysis every 7 days during 21 days. ES showed equivalent levels per gram of extract of total phenols and flavonoids equal to 122.04 mg for TAE and 0.60 mg for RE. The chlorogenic acid was one of the major constituents. S. pseudoquina extract presented high antioxidant potential in vitro. ES5 and ES10 showed higher wound healing rate and higher amount of cells, blood vessels, and type III and I collagen. The oxidative stress markers were lower in the ES5 and ES10 groups, while the antioxidants enzymes levels were higher. Ointment based on S. pseudoquina extract promotes a fast and efficient cutaneous repair in diabetic rats.
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Gonçalves RV, Novaes RD, Sarandy MM, Damasceno EM, da Matta SLP, de Gouveia NM, Freitas MB, Espindola FS. 5α-Dihydrotestosterone enhances wound healing in diabetic rats. Life Sci 2016; 152:67-75. [PMID: 27009546 DOI: 10.1016/j.lfs.2016.03.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/19/2016] [Accepted: 03/09/2016] [Indexed: 10/22/2022]
Abstract
UNLABELLED Wound healing involves a complex interaction between the cells, extracellular matrix and oxidative response. AIMS Analyze the effects of 5α-Dihydrotestosterone (5α-DTH) ointment in cutaneous wound healing by secondary intention in diabetic Wistar rats. MAIN METHODS Rats (302.23±26.23g, n=48) were maintained in cages with food and water ad libitum in accordance with the Guiding Principles in the Use of Animal Ethics Committee. Diabetes was induced by intraperitoneal injection of streptozotocin (60mg/kg). Three skin wounds (12mm diameter) were created on the animals' back, which were randomized into 6 groups according to the application received: VT group: Vehicle (lanolin), SA group: 0.9% saline solution, NC group: Non-diabetic, CP group: positive control (silver sulfadiazine 0001%), T1 group: Testosterone (10%), T2 group: Testosterone (20%) emulsified in lanolin. The applications were made daily within 21days, and tissues from different wounds were removed every 7days. KEY FINDINGS Both groups treated with testosterone (T1 and T2) showed a significantly higher proportion of type I and type III collagen fibers. Superoxide dismutase levels were significantly higher on days 7 and 14 in testosterone treated groups. Protein carbonyls and MDA were lower in both groups. SIGNIFICANCE We conclude that groups treated with 5α-DTH showed a better healing pattern with complete wound closure, and proved to have a positive effect on the morphology of the scar tissue as well as an antioxidant stimulating effect during secondhand intention skin wounds repair in diabetic rats.
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Affiliation(s)
| | - Rômulo D Novaes
- Institute of Biomedical Sciences, Department of Structural Biology, Federal University of Alfenas, Alfenas, MG, Brazil
| | - Mariáurea M Sarandy
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Eduardo M Damasceno
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Sérgio L P da Matta
- Department of General Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Neire M de Gouveia
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlandia, MG, Brazil
| | - Mariella B Freitas
- Department of Animal Biology, Federal University of Viçosa, Viçosa, MG, Brazil
| | - Foued S Espindola
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlandia, MG, Brazil
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Novaes RD, Cupertino MC, Sarandy MM, Souza A, Soares EA, Gonçalves RV. Time-Dependent Resolution of Collagen Deposition During Skin Repair in Rats: A Correlative Morphological and Biochemical Study. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2015; 21:1482-1490. [PMID: 26538416 DOI: 10.1017/s1431927615015366] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Skin samples were used to compare microscopy methods used to quantify collagen with potential applicability to resolve time-dependent collagen deposition during skin wound healing in rats. Skin wounds by secondary intention were made in rats and tissue fragments were collected every 7 days for 21 days. Collagen content determined by biochemical analysis was compared with collagen measured by point counting (PC) on histological skin sections stained by Gomori's trichrome method (Trichrome/PC), Sirius red under polarized light (PL) microscopy (Sirius red/PL-PC), and computational color segmentation (CS) applied to sections stained with Sirius red (Sirius red/PL-CS). All microscopy methods investigated resolved the time-dependent dynamics of collagen deposition in scar tissue during skin wound healing in rats. Collagen content measured by Sirius red/PL-PC and Sirius red/PL-CS was significantly lower when compared with Trichrome/PC. The Trichrome/PC method provided overestimated values of collagen compared with biochemical analysis. In the early stages of wound healing, which shows high production of noncollagenous molecules, Sirius red/PL-CS and Sirius red/PL-PC methods were more suitable for quantification of collagen fibers. Trichrome staining did not allow clear separation between collagenous and noncollagenous elements in skin samples, introducing a marked bias in collagen quantification.
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Affiliation(s)
- Rômulo D Novaes
- 1Department of Structural Biology,Federal University of Alfenas,Rua Gabriel Monteiro da Silva, 700,Campus Universitário,Centro,Alfenas,MG 37130-000,Brazil
| | - Marli C Cupertino
- 2Department of General Biology,Federal University of Viçosa,Viçosa,MG 36570-000,Brazil
| | - Mariaurea M Sarandy
- 2Department of General Biology,Federal University of Viçosa,Viçosa,MG 36570-000,Brazil
| | - André Souza
- 3Department of Animal Biology,Federal University of Viçosa,Viçosa,MG 36570-000,Brazil
| | - Evelise A Soares
- 4Department of Anatomy,Federal University of Alfenas,Alfenas,MG 37130-000,Brazil
| | - Reggiani V Gonçalves
- 3Department of Animal Biology,Federal University of Viçosa,Viçosa,MG 36570-000,Brazil
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Ointment of Brassica oleracea var. capitata Matures the Extracellular Matrix in Skin Wounds of Wistar Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:919342. [PMID: 26170889 PMCID: PMC4481082 DOI: 10.1155/2015/919342] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Revised: 05/17/2015] [Accepted: 05/19/2015] [Indexed: 12/19/2022]
Abstract
Wound healing is a complex process that aims to restore damaged tissue. Phytotherapeutics, such as cabbage, Brassica oleracea var. capitata (Brassicaceae), and sunflower, Helianthus annuus L. (Asteraceae) oil, are used as wound healers. Five circular wounds, each 12 mm in diameter, were made in the dorsolateral region of each rat. The animals were divided into four groups: balsam (B. oleracea); ointment (B. oleracea); sunflower oil (Helianthus annuus); control (saline solution 0.9%). These products were applied daily for 20 days and every four days the tissues of different wounds were removed. The wound contraction area, total collagen, types I and III collagen, glycosaminoglycans, and tissue cellularity were analyzed. In the groups that received ointment and balsam there was reduction in the wound area on days 4, 8, 12, and 20. Throughout the trial period, the balsam and ointment groups showed a higher amount of total collagen, type I collagen, and glycosaminoglycan compared to the others groups. The rats in the groups treated with B. oleracea var. capitata showed a higher number of cells on days 8, 16, and 20. B. oleracea was effective in stimulating the maturation of collagen and increasing the cellularity, as also in improving the mechanical resistance of the newly formed tissue.
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F. Moreira V, Vieira IJC, Braz-Filho R. Chemistry and Biological Activity of Condamineeae Tribe: A Chemotaxonomic Contribution of Rubiaceae Family. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/ajps.2015.616264] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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