Ekspresi COX-2  dan Jumlah Neutrofil Fase Inflamasi pada Proses Penyembuhan Luka Setelah Pemberian Sistemik Ekstrak Etanolik Rosela (Hibiscus sabdariffa) (studi in vivo pada Tikus Wistar)

Inflamasi merupakan respon alami tubuh terhadap adanya kerusakan jaringan. Salah satu medikamen untuk mengatasi inflamasi adalah antiinflamasi non steroid (AINS). Penggunaan AINS mempunyai beberapa efek samping dan dalam beberapa hal penggunaan tanaman obat dinilai lebih aman. Rosela merupakan salah satu tanaman obat yang mempunyai potensi sebagai antiinflamasi. Penelitian ini bertujuan untuk mengetahui efek pemberian sistemik ekstrak etanolik rosela terhadap ekspresi COX-2 dan jumlah neutrofil fase inflamasi pada proses penyembuhan luka. Bunga rosela didapatkan dari perkebunan di Dusun Bulusari Desa Pojok Kecamatan Tarokan Kabupaten Kediri Jawa Timur. Pembuatan ekstrak rosela dilakukan di LPPT unit I UGM Yogjakarta dengan cara perkolasi. Tikus putih galur Wistar sebanyak 36 ekor diberi perlukaan dengan punch biopsi ɵ 3 mm pada mukosa bukal. Subjek dibagi menjadi 3 kelompok, masing-masing kelompok 12 ekor tikus. Pembagian kelompok terdiri dari kontrol negatif (saline), kontrol positif (ibuprofen 20 mg/kg BB) dan perlakuan (ekstrak rosela 500 mg/kg BB). Pemberian minum sesuai kelompoknya sehari sekali selama 4 hari. Pada hari ke-1, ke-2, ke-3 dan ke-4 tikus dikorbankan lalu jaringan mukosa yang mengalami perlukaan dibuat preparat histologis. Pewarnaan Hematoksilin Eosin (HE) dilakukan untuk mengamati jumlah neutrofil. Ekspresi COX-2 diamati pada preparat dengan pewarnaan imunohistokimia menggunakan rabbit polyclonal antibody COX-2 (Lab Vision, USA). Jumlah neutrofil dan ekspresi COX-2 dihitung di bawah mikroskop cahaya lalu data dianalisi menggunakan ANAVA dan LSD. Hasil penelitian menunjukkan bahwa ekspresi COX-2 dan jumlah neutrofil lebih rendah pada kelompok perlakuan dibanding kontrol. Pengamatan klinis pada hari ke-4 juga tampak luka seluruh subjek telah menutup sempurna setelah pemberian minum rosela. Disimpulkan bahwa ekstrak etanolik rosela mempunyai kemampuan menghambat ekspresi COX-2 dan menurunkan jumlah neutrofil sehingga dapat digunakan sebagai bahan anti-inflamasi. Expression of COX-2 and The Number of Neutrophil in Inflammation stage of Wound Healing Process after Systemic Administration of Ethanolic Extract Rosela. Inflammation is an initial stage of body’s natural response to tissue damage.The use empirically plants often used for traditional medicine because it is easily found in the community and fewer side effects. Flavanoid presence of roselle (Hibiscus sabdariffa) is thought to have anti inflammatory effects. This study aimed to know the effect of systemic administration of Roselle ethanolic extract toward COX-2 expression and neutrophils number in the inflammatory phase of wound healing processes. Roselle was obtained from plantations in Bulusari hamlet, Tarokan, Kediri, EastJava. Making roselle extract was performed in LPPT unit 1 UGM Yogyakarta by percolation ways. Wistar rats were given a total of 36 injuries with ɵ 3 mm punch biopsy of the buccal mucosa. Subjects were divided into three groups, each group of 12 rats. The division consists of the negative control group (saline), positive control (ibuprofen 20 mg/kg) and treatment (roselle extract 500 mg/kg). Giving drink suitable group once daily for four days. On day 1, the 2nd, 3rd and fourth rats were sacrificed, and mucosal tissue injury was made histological preparat. Hematoxylin eosin staining (HE) was performed to observe the number of neutrophils. COX-2 expression was found in preparations for immunohistochemical staining using rabbit polyclonal COX-2 antibody (Lab Vision, USA). The number of neutrophils and expression of COX-2 is calculated under a light microscope data were analyzed using Two-way ANOVA and LSD. The results showed that the expression of COX-2 and neutrophil number were least in the treatment group compared to the control. Clinical observation on day four also appears around the wound has completely closed the subject after administration of roselle drink. It was concluded that the ethanolic extract of roselle can inhibit COX-2 expression and decrease the number of neutrophils that can be used as an anti-inflammatory ingredient.

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Anti Inflammatory Effect Of Toman Fish (Channa micropeltes) Extract In Wound Healing Process

Berkala Kedokteran ◽

10.20527/jbk.v14i2.5335 ◽

2018 ◽

Vol 14 (2) ◽

pp. 83

Author(s):

Maharani Laillyza Apriasari ◽

Dewi Puspitasari ◽

Amy Nindia Carabelly

Keyword(s):

Wound Healing ◽

Treatment Group ◽

Healing Process ◽

Positive Control ◽

Positive Control Group ◽

Control Group ◽

Wound Healing Process ◽

Inflammatory Phase ◽

Anti Inflammatory ◽

Inflammatory Effect

Abstract: One phase of wound healing is the inflammatory phase. Haruan fish extract has shown to accelerate the healing process up because it has anti-inflammatory effects. Toman fish originates from the same genus as the Haruan fish, but its anti-inflammatory effect remains unknown. It was done to analyzed anti-inflammatory effects of Toman fish extract. This study was true experimental design with posttest-only control design. Twenty-seven male mice of Balb-C strain were divided into 3 groups. Incision wound of 1 cm was made along the back of the mice. Nine mice in each group were sacrificed on 3rd days, then histopathology examination was conducted with Haematoxylin eosin. There were significant differences between treatment group given Toman fish extract and positive control group given Haruan fish extract, and also compared to the negative control group in PMN cell examination. There were significant differences between treatment group given Toman fish extract and positive control group given Haruan fish extract compared to negative controls on the number of macrophage cells. Toman fish extract could lower the number of PMN cells and was able to increase the number of macrophages on the 3rd days. Toman fish has anti-inflammatory effects on the wound healing process. Keywords: Anti-inflammatory effects, haruan fish extract, macrophages, PMN cells, toman fish extract

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Production of vegetable oil blends and structured lipids and their effect on wound healing

Brazilian Journal of Pharmaceutical Sciences ◽

10.1590/s1984-82502015000200019 ◽

2015 ◽

Vol 51 (2) ◽

pp. 415-427 ◽

Cited By ~ 5

Author(s):

Juliana Neves Rodrigues Ract ◽

Fabiana Andreia Schäfer De Martini Soares ◽

Hosana Gomes Rodrigues ◽

José Ricardo Bortolon ◽

Gilson Masahiro Murata ◽

...

Keyword(s):

Wound Healing ◽

Healing Process ◽

Structured Lipids ◽

Physiological Saline ◽

Structured Lipid ◽

Control Group ◽

Wound Healing Process ◽

Oil Blends ◽

Inflammatory Phase ◽

Canola Oils

<p>Two oil blends (sunflower/canola oils 85/15 (BL1) and canola/linseed oils 70/30 (BL2)), were prepared and enzymatically interesterified to be applied to surgically-induced wounds in rats. Following surgery, the animals were submitted to the Treatment with Physiological Saline (TPS) (control group), Blends (TBL), and Structured Lipids (TSL). The control group (TPS) received physiological saline solution for 15 days. In TBL, BL1 was administered during the inflammation phase (days 0-3) and BL2 in the tissue formation and remodeling phase (days 4-15). In TSL, Structured Lipid 1 (SL1) and Structured Lipid 2 (SL2) were used instead of BL1 and BL2, respectively. The aim of this study was to compare wound closure evolution among rats treated with the blends or structured lipids versus control rats treated with physiological saline. The wound healing process was evaluated by measuring the wound areas along the treatments and the concentrations of cytokines. An increase in the areas of wounds treated with the blends and structured lipids in the inflammatory phase was observed, followed by a steeper closure curve compared to wounds treated with physiological saline. The changes observed during the inflammatory phase suggest a potential therapeutic application in cutaneous wound healing which should be further investigated.</p>

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Efektivitas Gel Ekstrak Bawang Putih terhadap Proses Penyembuhan Luka Fase Inflamasi

Jurnal Vokasi Kesehatan ◽

10.30602/jvk.v4i2.159 ◽

2018 ◽

Vol 4 (2) ◽

pp. 109

Author(s):

Mufimah Mufimah ◽

Uti Rusdian Hidayat ◽

Ichsan Budiharto

Keyword(s):

Wound Healing ◽

Wound Care ◽

Healing Process ◽

Garlic Extract ◽

Group Method ◽

Control Group ◽

Wound Healing Process ◽

Protection Mechanism ◽

Inflammatory Phase ◽

Post Test

Abstract: Efectiveness Gel Extract Of White On The Process Of Healing Inflamation Phase Heating. The inflammatory phase is a favorable body response as a protection mechanism. In the process of wound healing becomes a very important phase. Management of inflammation that is often used Non-Steroid Anti-Inflammatory class of salicylates on the skin that have side effects. The content of allicin in garlic can be used for problems that begin with the inflammatory phase. The use of gel from garlic extract is also easier to use and easier to clean. The study aim to determine the effectiveness of garlic extract gel to process wound inflammatory phase healing. This research is an experimental research with pre and post test with control group method with 24 samples. Conducted injury to the back area of rat length of wound 1 cm, depth to dermis. Conducted wound care, given gel extract of garlic concentration of 20%, 40%, 80% of the control using 0.9% NaCl compress. Using Kruskal Wallis test and Anova oneway showed concentration of 20%, 40%, and 80% of sig <0,05 ie 0.00. It was concluded that 20%, 40%, 80% garlic extract gel was effective against inflammatory wound healing process. The use of garlic extract gel is more effective in the wound inflammatory wound healing process.Abstrak: Efektivitas Gel Ekstrak Bawang Putih terhadap Proses Penyembuhan Luka Fase Inflamasi. Fase inflamasi merupakan respon tubuh yang menguntungkan sebagai mekanisme perlindungan. Pada proses penyembuhan luka menjadi fase yang sangat penting. Penatalaksanaan inflamasi yang sering digunakan Anti-Inflamasi Non Steroid golongan salisilat pada kulit yang memiliki efek samping. Kandungan zat allicin pada bawang putih dapat dimanfaatkan untuk masalah yang diawali dengan fase inflamasi. Pemanfaatan gel dari ekstrak bawang putih pun dalam penggunaannya lebih mudah diabsorsi dan mudah dibersihkan. Penelitian ini bertujuan untuk mengetahui efektifitas gel ekstrak bawang putih terhadap proses penyembuhan luka fase inflamasi. Penelitian ini merupakan penelitian eksperiment dengan metode pre and post test with control grup dengan jumlah sampel sebanyak 24 ekor tikus. Dilakukan perlukaan pada daerah punggung tikus panjang luka 1 cm, kedalaman sampai dermis. Dilakukan perawatan luka, diberi gel ekstrak bawang putih konsentrasi berbeda yaitu 20%, 40%, 80% kontrol menggunakan kompres NaCl 0,9%. Hasil uji Kruskal Wallis dan Anova oneway menunjukkan konsentrasi 20%, 40%, dan 80% nilai sig <0,05 yaitu 0,00. Disimpulkan bahwa 20%, 40%, 80% gel ekstrak bawang putih efektif terhadap proses penyembuhan luka inflamasi. Penggunaan gel ekstrak bawang putih lebih efektif dalam proses penyembuhan luka inflamasi luka. Disimpulkan bahwa 20%, 40%, 80% gel ekstrak bawang putih efektif terhadap proses penyembuhan luka inflamasi. Penggunaan gel ekstrak bawang putih lebih efektif dalam proses penyembuhan luka inflamasi luka.

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Overcoming the Inflammatory Stage of Non-Healing Wounds: In Vitro Mechanism of Action of Negatively Charged Microspheres (NCMs)

Nanomaterials ◽

10.3390/nano10061108 ◽

2020 ◽

Vol 10 (6) ◽

pp. 1108

Author(s):

Edorta Santos-Vizcaino ◽

Aiala Salvador ◽

Claudia Vairo ◽

Manoli Igartua ◽

Rosa Maria Hernandez ◽

...

Keyword(s):

Wound Healing ◽

Mechanism Of Action ◽

Healing Process ◽

Dermal Fibroblasts ◽

Control Group ◽

Promote Cell Proliferation ◽

Inflammatory Phase ◽

Inflammatory State ◽

Diabetic Wounds

Negatively charged microspheres (NCMs) represent a new therapeutic approach for wound healing since recent clinical trials have shown NCM efficacy in the recovery of hard-to-heal wounds that tend to stay in the inflammatory phase, unlocking the healing process. The aim of this study was to elucidate the NCM mechanism of action. NCMs were extracted from a commercial microsphere formulation (PolyHeal® Micro) and cytotoxicity, attachment, proliferation and viability assays were performed in keratinocytes and dermal fibroblasts, while macrophages were used for the phagocytosis and polarization assays. We demonstrated that cells tend to attach to the microsphere surface, and that NCMs are biocompatible and promote cell proliferation at specific concentrations (50 and 10 NCM/cell) by a minimum of 3 fold compared to the control group. Furthermore, NCM internalization by macrophages seemed to drive these cells to a noninflammatory condition, as demonstrated by the over-expression of CD206 and the under-expression of CD64, M2 and M1 markers, respectively. NCMs are an effective approach for reverting the chronic inflammatory state of stagnant wounds (such as diabetic wounds) and thus for improving wound healing.

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Wound Healing and Anti-Inflammatory Effect in Animal Models ofCalendula officinalisL. Growing in Brazil

Evidence-based Complementary and Alternative Medicine ◽

10.1155/2012/375671 ◽

2012 ◽

Vol 2012 ◽

pp. 1-7 ◽

Cited By ~ 47

Author(s):

Leila Maria Leal Parente ◽

Ruy de Souza Lino Júnior ◽

Leonice Manrique Faustino Tresvenzol ◽

Marina Clare Vinaud ◽

José Realino de Paula ◽

...

Keyword(s):

Wound Healing ◽

Healing Process ◽

Chorioallantoic Membrane ◽

Ethanolic Extract ◽

Immunohistochemical Analysis ◽

Antibacterial Activities ◽

Cutaneous Wounds ◽

Annual Herb ◽

Anti Inflammatory ◽

Inflammatory Effect

Calendula officinalisis an annual herb from Mediterranean origin which is popularly used in wound healing and as an anti-inflammatory agent. In this study, the ethanolic extract, the dichloromethane, and hexanic fractions of the flowers from plants growing in Brazil were produced. The angiogenic activity of the extract and fractions was evaluated through the chorioallantoic membrane and cutaneous wounds in rat models. The healing activity of the extract was evaluated by the same cutaneous wounds model through macroscopic, morphometric, histopathologic, and immunohistochemical analysis. The antibacterial activity of the extract and fractions was also evaluated. This experimental study revealed thatC. officinalispresented anti-inflammatory and antibacterial activities as well as angiogenic and fibroplastic properties acting in a positive way on the inflammatory and proliferative phases of the healing process.

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HE EFFECT OF BINJAI LEAVES EXTRACT (Mangifera caesia) ON INCISIONAL BACK WOUND OF MICE (Mus musculus) TO THE NUMBER OF NEUTROPHIL CELLS (Preliminary Study of Drug Preparations for Wound Healing)

Dentino : Jurnal Kedokteran Gigi ◽

10.20527/dentino.v5i1.8116 ◽

2020 ◽

Vol 5 (1) ◽

pp. 21

Author(s):

Desty Ayu Dwiyanti ◽

Irham Taufiqurrahman ◽

Didit Aspriyanto

Keyword(s):

Wound Healing ◽

Healing Process ◽

Negative Control Group ◽

Negative Control ◽

Control Group ◽

Wound Healing Process ◽

Control Group Design ◽

Group Design ◽

Inflammatory Phase ◽

Significant Difference

Background: Ethanol extract of binjai leaves contain bioactive compounds in the form of flavonoid and saponin which is potential as anti-inflammatory, so it will be able to control the wound healing process. Binjai leaves extract can affect the number of neutrophil on inflammatory phase, as it is characterized by neutrophil cells infiltration to the wound tissue, so its number will increase at the beginning of inflammatory phase and decrease on the 3rd day. Objective: To prove the effect of binjai leaves extract in 1 mg/mL, 2 mg/mL, and 3 mg/mL which given topically to the number of neutrophil in day 1, 3, and 5 of wound incision on the back of male mice. Methods: The study design was a pure laboratory experimental study with post-test only with control group design which involved 36 mice divided into 4 groups: negative control group design which was given BR2 feed, treatment group which was given binjai leaves extract in 1 mg/mL, 2 mg/mL, and 3 mg/mL. Results: The result of One-way ANOVA showed that there was significant difference of all groups in day 1 (p=0.000), day 3 (p=0.001), and day 5 (p=0.000). Post-Hoc LSD test showed that there was significant difference (p<0.05) between the negative control group and treatment groups. Conclusion: Binjai leaves extract has an effect to increase the number of neutrophil in day 1 and decrease the number of neutrophil in day 3 and 5 on the healing of back wound incision in mice.

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The effect of papaya leaf extract (Carica papaya L) on healing process of buccal traumatic ulcer in wistar rats

Majalah Kedokteran Gigi Indonesia ◽

10.22146/majkedgiind.37026 ◽

2019 ◽

Vol 1 (1) ◽

pp. 15

Author(s):

Afryla Femilian ◽

Dewi Agustina ◽

Goeno Subagyo

Keyword(s):

Wound Healing ◽

Treatment Group ◽

Buccal Mucosa ◽

Wistar Rats ◽

Carica Papaya ◽

Healing Process ◽

Herbal Medicines ◽

Ethanolic Extract ◽

Control Group ◽

Wound Healing Process

Indonesians have been using herbal medicines for a long time to cure some illnesses. Carica papaya L is an example of an herb that contains papain enzymes, saponins, lysozymes, lipases, flavonoids, polyphenols and vitamin C. These ingredients are believed to be beneficial for the wound healing process. The purpose of this study was to determine the effect of topical application of ethanolic extract of Carica papaya L to the healing process of rat mouth ulcer. Subjects were 32 Wistar rats divided into 2 groups (control group and treatment group), each group containing 16 rats. All subjects were made to suffer from ulcers using glacial acetyl acid applied for 40 seconds in the buccal mucosa. Treatment group was treated with papaya leaf ethanolic extract on ulcers twice a day using microbrush, while the ulcer in the control group was not treated with the extract. The ulcerated tissue was biopsied and stained with H&E. Observations were performed on the day 0, 3rd, 7th and 12th on HE slides. Data were observed by looking at three indicators of wound healing i.e. macrophage, angiogenesis and re-epithelisation. Number of macrophages and angiogenesis were analyzed using two-way ANOVA. Data of epithelial thickness were analyzed using Kruskal-Wallis test. The post hoc test in the treatment group and the control group on day 0 showed results of p = 1.00. On day 3, day 7 and day 12, the result of p was <0.05. In the treatment group on day 0 compared to the treatment group on the 3rd, 7th, 12th day, the results were p<0.05. In the treatment group on the 3rd day compared to the 7th and 12th days the results were p>0.05. The treatment group on the 7 day compared to the treatment group on the 12 day had p>0.05. In the control group, on day 0 compared to day 3, the results of p>0.05, while the control group day 0 with day 7, 12 had a result of p<0.05. The control group on the 3rd day was compared with the 7th day. The 12th also had a result of p<0.05. The comparison between the 7 day control groups showed p of >0.05. These data suggest that the papaya leaf ethanolic extract could accelerate the healing of oral ulcer on the buccal mucosa of wistar rats.

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Ekstrakharuan(Channa striata)secara efektif menurunkan jumlah limfosit fase inflamasi dalam penyembuhan luka (Extract of haruan (Channa striata) decreases lymphocyte count in inflammatory phase of wound healing process effectively)

Journal of Dentomaxillofacial Science ◽

10.15562/jdmfs.v13i3.411 ◽

2014 ◽

Vol 13 (3) ◽

pp. 176

Author(s):

Arisa Izzaty ◽

Nurdiana Dewi ◽

Dewi Indah Noviana Pratiwi

Keyword(s):

Wound Healing ◽

Lymphocyte Count ◽

Healing Process ◽

Simple Random Sampling ◽

Positive Control ◽

Negative Control ◽

Control Group ◽

Wound Healing Process ◽

Inflammatory Phase ◽

Channa Striata

Haruan is river-water fish usually consumed by South Kalimantan people. Haruan extract contains albumin, Zn, Fe,Cu and unsaturated fatty acid which can act as antiinflammatory substances and accelarate wound healing. The aim ofthis study is to examine effectiveness of haruan extract on lymphocyte count in infammatory phase of wound healingprocess and compare it to ibuprofen. This study used true experimental method with post-test only control group designand simple random sampling. Samples were divided into 5 treatment groups:which were given the extract for 7 sevendays: 25% haruan extract group, 50% haruan extract group, 100% haruan extract group, negative control K(-) usingaquadest, positive control K(+) given ibuprofen suspension with dosage of 20mg/kg weight/day. Lymphocyte cells wereobserved using microscope and counted per field of view. Lymphocyte count reached its peak on day 5. Lymphocytecount means in each group were 4,2 ± 0,566; 1± 0,000; 3,8 ± 2,546; 7,1 ± 0,141; dan 7,5 ± 3,818 respectively. Two way ANOVA and post hoc LSD tests showed that lymphocyte count significantly decreased in 50% and 100% treatmentgroups (p<0,05) and has equal effect with ibuprofen in decreasing lymphocyte count. This study concluded that haruanextract significantly decreased lymphocyte count in wound healing process.

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The Wound Healing Property of N-Methyl-(2S,4R)-trans-4-Hydroxy-L-Proline from Sideroxylon obtusifolium is Related to its Anti-Inflammatory and Antioxidant Actions

Journal of Evidence-Based Integrative Medicine ◽

10.1177/2515690x19865166 ◽

2019 ◽

Vol 24 ◽

pp. 2515690X1986516 ◽

Cited By ~ 1

Author(s):

Pedro Everson Alexandre de Aquino ◽

Tamiris de Fátima Goebel de Souza ◽

Flávia Almeida Santos ◽

Ana Flávia Seraine Custódio Viana ◽

Bianca Oliveira Louchard ◽

...

Keyword(s):

Wound Healing ◽

Healing Process ◽

Wound Healing Process ◽

Collagen Deposition ◽

Control Groups ◽

Wound Induction ◽

Extracellular Matrix Components ◽

Cox 2 ◽

Anti Inflammatory ◽

And Control

Wound healing involves the interaction of blood cells, proteins, proteases, growth factors, and extracellular matrix components. Inflammation is one of the first events occurring during this process. Previously, we showed that the N-Methyl-(2S,4R)-trans-4-Hydroxy-L-Proline (NMP) from Sideroxylon obtusifolium leaves (a Brazilian medicinal species) presents an anti-inflammatory action. Considering inflammation as an important event in the wound healing process, the objectives were to investigate the topical effects of the NMP gel on a mice wound-induced model. Male Swiss mice were divided into 4 groups: Sham (surgical procedure only), Control (gel-base treated), and 3% or 10% NMP gel-treated groups. Measurements of wound areas and microscopic analyses (HE [hematoxylin-eosin] and PSR [picrosirius red] stainings) were carried out, at the 7th and 12th, days after the wound induction. Furthermore, immunohistochemical assays for iNOS (inducible nitric oxide synthase) and COX-2 (cyclooxygenase-2) and biochemical measurements for TBARS (thiobarbituric acid reactive substances), GSH (glutathione), and myeloperoxidase (MPO) were also performed, at the second day after the wound induction. The work showed that NMP decreases the wound areas, after topical application, relatively to the Sham and Control groups. In addition, microscopic alterations were reduced and collagen deposition was increased, at the 7th and 12th days, in the 10% NMP group. While iNOS and COX-2 immunostainings and GSH contents increased, in relation to the Sham and Control groups, TBARS and MPO decreased. Altogether, the results showed NMP to improve the wound healing process, by upregulating iNOS and COX-2 activities, reducing lipid peroxidation and MPO activity, and increasing GSH contents. In addition, NMP certainly contributes to the increased collagen deposition. These data may stimulate translational studies dealing with the possible use of NMP from Sideroxylon obtusifolium or from other sources for the management of wound healing.

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Collagen-Polyvinyl Alcohol-Indomethacin Biohybrid Matrices as Wound Dressings

Pharmaceutics ◽

10.3390/pharmaceutics10040224 ◽

2018 ◽

Vol 10 (4) ◽

pp. 224 ◽

Cited By ~ 11

Author(s):

Ștefania Marin ◽

Mădălina Albu Kaya ◽

Mihaela Ghica ◽

Cristina Dinu-Pîrvu ◽

Lăcrămioara Popa ◽

...

Keyword(s):

Wound Healing ◽

Polyvinyl Alcohol ◽

Enzymatic Degradation ◽

Healing Process ◽

Control Group ◽

Type I ◽

Inflammatory Drug ◽

Composite Gels ◽

Ft Ir ◽

Anti Inflammatory

The aim of this study is to design, develop and evaluate new biohybrid sponges based on polymers (collagen and polyvinyl alcohol) with and without indomethacin as anti-inflammatory drug model to be used for tissue regeneration in wound healing. Type I fibrillar collagen in the form of a gel and different concentrations of polyvinyl alcohol were mixed together to prepare composite gels. Both control samples, without indomethacin and with indomethacin, were obtained. All samples were crosslinked with glutaraldehyde. By freeze-drying of hydrogels, the spongious forms (matrices) were obtained. The matrices were characterized by FT-IR spectroscopy, scanning electron microscopy (SEM), water absorption, enzymatic degradation and in vitro indomethacin release. The pharmacological effect of the spongious biohybrid matrices was determined on an experimental model of burns induced to Wistar rats. The SEM images showed a porous structure with interconnected pores. Collagen sponges present a structure with pore sizes between 20 and 200 µm, which became more and more compact with polyvinyl alcohol addition. The FT-IR showed interactions between collagen and polyvinyl alcohol. The enzymatic degradation indicated that the most stable matrix is the one with the ratio 75:25 of collagen:polyvinyl alcohol (ACI75), the other ones being degradable in time. The kinetic data of indomethacin release from matrices were fitted with different kinetic models and highlighted a biphasic release of the drug. Such kinetic profiles are targeted in skin wound healing for which important aspects are impaired inflammation and local pain. The treatment with sponges associated with anti-inflammatory drug had beneficial effects on the healing process in experimentally induced burns compared to the corresponding matrices without indomethacin and the classical treated control group.

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