3 research outputs found

    Development of the Acellular Dermal Matrix and Experimental Substantiation of Its Use in the Anterior Abdominal Wall hernia Repair

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    Objective:Β To develop a biological implant that is an acellular dermal matrix (ADM), evaluate its use as a support material in tensionfree hernioplasty for ventral hernia, and compare it to that of the commercially available implant PermacolTM.Β  Β Materials and methods:Β ADM was derived from the porcine dermis (Landrace breed) decellularized using detergents and enzymes. The quality of devitalization was assessed in vitro. We performed sublay hernioplasty in 4-month-old Landrace pigs using ADM (experimental group) and PermacolTMΒ (control group). The specimens were explanted on day 120 of the experiment for histological and immunohistochemical examination.Β  Β Results:Β All cellular elements were removed by the detergent-enzymatic treatment of the dermis; the native architecture of the dermis was slightly disrupted. The specimens of the commercially available chemically cross-linked biomaterial PermacolTMΒ had better mechanical properties than ADM specimens; however, there were no significant differences in terms of cytotoxicity. The state of the tissues after the explantation (number of fibroblasts and endothelial cells) showed no differences in the result of using ADM and PermacolTM. In 120 days, the materials integrated into the tissues without the formation of adhesions or inflammation.Β  Β Conclusions:Β Our findings show that ADM does not have cytotoxic properties, has adequate biomechanical parameters to effectively reinforce supporting soft tissues, does not cause an inflammatory response during implantation, and integrates fully into tissues. Our study demonstrates the effectiveness and utility of the developed ADM in surgical treatment of anterior abdominal wall defects

    ΠŸΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ гидрогСля Π½Π° основС Π΄Π΅Ρ€ΠΌΡ‹ свиньи для ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ лСчСния повСрхностных Ρ€Π°Π½

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    Aim. To study the efficacy of dermal hydrogel application in the experimental treatment of superficial scarified wounds in rats.Materials and methods. The hydrogel was obtained from porcine dermis by alkaline hydrolysis. The DNA concentration was determined using the Nano Drop ND-1000 spectrophotometer. The study included 30 male Sphinx rats. Scarified wounds were created on the rat skin, then the rats were divided into two groups: group 1 – rats without treatment, or control group (n = 15), group 2 – rats with wound treatment with the dermal hydrogel for 5 days, or experimental group (n = 15). On day 3, 7, and 14 of the experiment, we explanted skin samples from the wound area and performed routine H&E staining.Results. On day 3 of the experiment, moderate inflammation, edema, and collagen fiber disorganization were revealed in the experimental group, and pronounced inflammation with purulent exudate was found in the control group. On day 7 of the experiment, inflammation and foci of stratified epithelium were detected in the control group. The histologic analysis of the skin samples from the experimental group showed pronounced plethora of the vessels, necrotic changes of the dermis, and edema. The total thickness of the epidermis and the thickness of its stratum corneum were greater than in the control group samples. On day 14, the differences between the groups were minimal and the epidermis was thickened in the experimental group animals.Conclusion. The study examined the effects of the dermal hydrogel on scarified wounds in rats. We found faster skin regeneration (by 1.5–2 days) in the experimental group compared to the controls. Besides, the rats of the experimental group were characterized by an increase in the number of fibroblasts in the dermis and thickened epidermis in the affected area.ЦСль – ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΠ΅ эффСктивности использования Π΄Π΅Ρ€ΠΌΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ гидрогСля ΠΏΡ€ΠΈ ΡΠΊΡΠΏΠ΅Ρ€ΠΈΠΌΠ΅Π½Ρ‚Π°Π»ΡŒΠ½ΠΎΠΌ Π»Π΅Ρ‡Π΅Π½ΠΈΠΈ повСрхностных скарифицированных Ρ€Π°Π½ Ρƒ крыс.ΠœΠ°Ρ‚Π΅Ρ€ΠΈΠ°Π»Ρ‹ ΠΈ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρ‹. Π“ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»ΡŒ ΠΏΠΎΠ»ΡƒΡ‡Π°Π»ΠΈ ΠΈΠ· свиной Π΄Π΅Ρ€ΠΌΡ‹ химичСским ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠΌ с ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Ρ‰Π΅Π»ΠΎΡ‡Π½ΠΎΠ³ΠΎ Π³ΠΈΠ΄Ρ€ΠΎΠ»ΠΈΠ·Π°. Π’ ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½Π½Ρ‹Ρ… ΠΎΠ±Ρ€Π°Π·Ρ†Π°Ρ… гидрогСля опрСдСляли содСрТаниС Π”ΠΠš с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ спСктрофотомСтра Nano Drop ND-1000. ИсслСдованиС ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π½Π° 30 самцах крыс ΠΏΠΎΡ€ΠΎΠ΄Ρ‹ сфинкс. ΠšΡ€Ρ‹ΡΠ°ΠΌ наносили скарифицированныС Ρ€Π°Π½Ρ‹, Π·Π°Ρ‚Π΅ΠΌ ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Π΅ Π±Ρ‹Π»ΠΈ Ρ€Π°Π·Π΄Π΅Π»Π΅Π½Ρ‹ Π½Π° Π΄Π²Π΅ Π³Ρ€ΡƒΠΏΠΏΡ‹: Π³Ρ€ΡƒΠΏΠΏΠ° 1 – Π±Π΅Π· лСчСния, ΠΈΠ»ΠΈ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½Π°Ρ Π³Ρ€ΡƒΠΏΠΏΠ° (n = 15), Π³Ρ€ΡƒΠΏΠΏΠ° 2 – Π»Π΅Ρ‡Π΅Π½ΠΈΠ΅ Ρ€Π°Π½Ρ‹ Π΄Π΅Ρ€ΠΌΠ°Π»ΡŒΠ½Ρ‹ΠΌ Π³ΠΈΠ΄Ρ€ΠΎΠ³Π΅Π»Π΅ΠΌ Π² Ρ‚Π΅Ρ‡Π΅Π½ΠΈΠ΅ 5 сут (n = 15). На 3-ΠΈ, 7-Π΅ ΠΈ 14-Π΅ сут ΡΠΊΡΠΏΠ»Π°Π½Ρ‚ΠΈΡ€ΠΎΠ²Π°Π»ΠΈΡΡŒ ΠΎΠ±Ρ€Π°Π·Ρ†Ρ‹ ΠΊΠΎΠΆΠΈ ΠΈΠ· области Ρ€Π°Π½Ρ‹, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ ΠΏΠΎΠ΄Π²Π΅Ρ€Π³Π°Π»ΠΈΡΡŒ гистологичСскому исслСдованию.Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹. На 3-ΠΈ сут экспСримСнта Π² ΠΎΠ±Ρ€Π°Π·Ρ†Π°Ρ… ΠΊΠΎΠΆΠΈ ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Ρ… Π³Ρ€ΡƒΠΏΠΏΡ‹ 2 ΠΎΡ‚ΠΌΠ΅Ρ‡Π°Π»ΠΎΡΡŒ ΡƒΠΌΠ΅Ρ€Π΅Π½Π½ΠΎΠ΅ воспалСниС с повСрхностным ΠΎΡ‚Π΅ΠΊΠΎΠΌ ΠΈ дискомплСксациСй ΠΊΠΎΠ»Π»Π°Π³Π΅Π½ΠΎΠ²Ρ‹Ρ… Π²ΠΎΠ»ΠΎΠΊΠΎΠ½, Π° ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹ – Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΠ΅ воспалСниС с Π³Π½ΠΎΠΉΠ½Ρ‹ΠΌ экссудатом. На 7-Π΅ сут экспСримСнта Ρƒ крыс ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹ наблюдали воспалСниС, ΠΎΠ΄Π½Π°ΠΊΠΎ ΠΎΡ‚ΠΌΠ΅Ρ‡Π°Π»ΠΈ ΠΎΡ‡Π°Π³ΠΈ ΠΏΡ€ΠΎΠ»ΠΈΡ„Π΅Ρ€Π°Ρ†ΠΈΠΈ многослойного эпитСлия. ГистологичСский Π°Π½Π°Π»ΠΈΠ· ΠΊΠΎΠΆΠΈ ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Ρ… Π³Ρ€ΡƒΠΏΠΏΡ‹ 2 продСмонстрировал Π±ΠΎΠ»Π΅Π΅ Π²Ρ‹Ρ€Π°ΠΆΠ΅Π½Π½ΠΎΠ΅ ΠΏΠΎΠ»Π½ΠΎΠΊΡ€ΠΎΠ²ΠΈΠ΅ сосудов, нСкротичСскиС измСнСния Π΄Π΅Ρ€ΠΌΡ‹ ΠΈ Π΅Π΅ ΠΎΡ‚Π΅ΠΊ. ΠžΠ±Ρ‰Π°Ρ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Π° эпидСрмиса ΠΈ Ρ‚ΠΎΠ»Ρ‰ΠΈΠ½Π° Π΅Π³ΠΎ Ρ€ΠΎΠ³ΠΎΠ²ΠΎΠ³ΠΎ слоя Π±Ρ‹Π»Π° большС, Ρ‡Π΅ΠΌ Π² ΠΎΠ±Ρ€Π°Π·Ρ†Π°Ρ… ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹. На 14-Π΅ сут экспСримСнта различия ΠΌΠ΅ΠΆΠ΄Ρƒ ΠΈΠ·ΡƒΡ‡Π°Π΅ΠΌΡ‹ΠΌΠΈ Π³Ρ€ΡƒΠΏΠΏΠ°ΠΌΠΈ Π±Ρ‹Π»ΠΈ ΠΌΠΈΠ½ΠΈΠΌΠ°Π»ΡŒΠ½Ρ‹, ΠΎΡ‚ΠΌΠ΅Ρ‡Π°Π»ΠΈ ΡƒΡ‚ΠΎΠ»Ρ‰Π΅Π½ΠΈΠ΅ эпидСрмиса Ρƒ ΠΆΠΈΠ²ΠΎΡ‚Π½Ρ‹Ρ… Π³Ρ€ΡƒΠΏΠΏΡ‹ 2 ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΠΎΠΉ.Π—Π°ΠΊΠ»ΡŽΡ‡Π΅Π½ΠΈΠ΅. Π’ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½Π½ΠΎΠΌ исслСдовании продСмонстрировано, Ρ‡Ρ‚ΠΎ ΠΏΡ€ΠΈ использовании гидрогСля Π½Π° основС Π΄Π΅Ρ€ΠΌΡ‹ свиньи для лСчСния скарифицированных Ρ€Π°Π½ крыс ΠΏΠΎΠ»Π½ΠΎΠ΅ восстановлСниС ΠΊΠΎΠΆΠΈ Π² ΠΏΠΎΡ€Π°ΠΆΠ΅Π½Π½ΠΎΠΉ области наступало Π½Π° 1,5–2 сут быстрСС, Ρ‡Π΅ΠΌ Π² ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΠ΅. Помимо этого Π±Ρ‹Π»ΠΎ зарСгистрировано ΡƒΠ²Π΅Π»ΠΈΡ‡Π΅Π½ΠΈΠ΅ количСства фибробластов Π² Π΄Π΅Ρ€ΠΌΠ΅ ΠΈ ΡƒΡ‚ΠΎΠ»Ρ‰Π΅Π½ΠΈΠ΅ эпидСрмиса ΠΎΡ‚Π½ΠΎΡΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π°Π½Π°Π»ΠΎΠ³ΠΈΡ‡Π½ΠΎΠ³ΠΎ показатСля Ρƒ крыс ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»ΡŒΠ½ΠΎΠΉ Π³Ρ€ΡƒΠΏΠΏΡ‹
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