Добавил:
kiopkiopkiop18@yandex.ru t.me/Prokururor I Вовсе не секретарь, но почту проверяю Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:

Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_764_Библиотеки_им_академика_М_И_Перельмана

.pdf
Скачиваний:
0
Добавлен:
30.08.2026
Размер:
47 Мб
Скачать
238
s
TIMP1*
a
https://t.me/medicina_free
F. D’Andrea and F. Mosella
action in two ways: by preventing the activation of proenzyme molecules or by blocking the activ­ity of activated MMPs [90] The presence of bacteria in wounds can increase protease activity. Bacteria induce an inammatory response that stimulates protease production. In addition, the bacteria themselves may produce the proteases [91].
In healthy skin, the levels of MMPs are very low. Under physiological conditions, following injury, there is a rapid increase in proteases that induces degradation of the damaged ECM and assists in neutrophil recruitment and clearance of any foreign bodies. The peak concentration decreases within 5days leading quickly to resti­tutio ad integrum. In hard-to-heal wounds, per­sistence of high levels of proteases responsible for growth factor degradation and prevalence of ECM destruction processes over deposition pro­cesses are often observed. Such conditions fur-
Fig. 23.12 Schematic representation of MMP activation under inammatory and wounding conditions. (a) Overview of the production, activation, and inhibition of MMPs by TIMPs. (b) Modulation of MMPs/TIMPs production by reactive oxygen species, other proteases, and by cytokines and growth factors released under inammatory and wounding conditions. These regulations are reported in the literature and may depend on cell types and tissue microenvironment [92]
b
Inflammatory cells
Inflammatory cells
Reactive oxygen species
ther fuel the inammatory response and the release of harmful reactive oxygen species (Cullen’s circle) leading to the blockage of heal­ing in the inammatory phase.
Pro-MMPs are the inactive forms of MMPs; MT-MMPs are membrane-type MMPs; TIMPs, tissue inhibitor of metalloproteinases. The thin curved arrow indicates activation of MMPs and inhibition of MMPs.
Increased levels of MMPs do not result in characteristic clinical signs that would diagnose such an alteration. Such a condition may be hypothesized when, despite good control of the patient’s comorbidities and appropriate local management (debridement of LOS, control of bacterial load, good management of examina­tion), the lesions appear to be in a stalled phase (Figs.23.12 and 23.13).
To date, there is still no precise denition of dressings that act on metalloproteases.
Wounded cells
Other Proteases
Serine proteases. or other MMPs
MT-MMP
Wounded cells
MMPs
Pro-MMPs
TIMPs
Proteases
Cytokines and growth factor
MMPs
TIMPs
IL6, IL4, TNF, TGF
β
MMPs
TIMPs TIMP-1 and TIMP-3 TIMP2,
MMP1#MMP3 MMP7, MMP11#MMP9, MMP14#MMP17, MMP19, MMP25
CTGF, HGF*
MMP2#MMP3 MMP9, MMP13, MMP14,
23 Bioinductive Dressing
https://t.me/medicina_free
Fig. 23.13 Stalled wound characteristics [93]
239
Dissemond in the 2020 review (rst MMPs biblio) distinguished dressings active on MMPs into:
dressings that inhibit MMPs, dressings that modulate MMPs.
The distinction between the two classes is that the former were specically marketed for their action on proteases, the latter result in their modulation by rebalancing the ulcer microenvironment.
The dressings that inhibit the secretion of metalloproteases are essentially two:
Oxidized regenerated cellulose (ORC)/colla­gen commercialized in the late 1990s.
Lipid-Collagen Technology with NanoOligosaccharide Factor (TLC-NOSF) intro­duced to the market in 2000.
ORC/collagen matrix is a sterile lyophilized pad composed of 55% collagen and 45% oxi­dized regenerated cellulose (ORC). It reduces the activity of elastase, MMPs (drastically collage­nase and gelatinase), and oxygen free radicals.
Interacting with the injury, it inhibits tissue degradation and promotes granulation tissue syn­thesis by inducing [94]:
• the reduction of proteolytic activity and free
radical damage,
• the binding and stabilization of growth factors
(PDGF),
• the increased recruitment of macrophages and
broblasts,
• the proliferation of broblasts [95].
It is a highly conformable dressing that degrades on contact with exudate.
In wounds with little exudate, it can be acti­vated with a few drops of distilled water or saline.
It is indicated in cleansed wounds with mild/ moderate exudation, both acute and chronic.
The timing of dressing changes should be evaluated according to the characteristics of the treated wound: It should not be removed until complete breakdown.
Formulation with silver (ionically bonded to regenerated cellulose) may be useful in cases of
240
https://t.me/medicina_free
F. D’Andrea and F. Mosella
critical colonization or reduced immunologic potential of the host.
Requires secondary dressing. Can be placed
under compression bandaging.
Lipid-colloid technology dressings with NanoOligosaccharide Factor (TLC-NOSF) are a range of dressings composed of carboxymethyl­cellulose particles distributed in a vaseline net­work and impregnated with NOSF on a non-occlusive, soft, non-woven polyester layer [96]. Upon contact with the exudate, the hydro­colloid particles form a gel that interacts with the vaseline to form a lipidocolloid lm that creates a moist environment within the wound. This results in a kind of microadhesiveness of the dressings that allows control of the ulcer microenvironment and, at the same time, a reduction in discomfort upon removal of the dressing.
Potassium salt of sulfated oligosaccharides [97] is able to enhance and speed up the repara­tive process by determining the inhibition of MMPs, interaction with growth factors, and res­toration of their biological functions. In vitro studies on an equivalent dermal model have shown that TLC-NOSF is able to signicantly reduce the activity of some MMPs, such as gela­tinases (MMP2 and MMP9) and collagenases (MMP1 and MMP8) present in exudate [98, 99].
TLC-NOSF dressings can be distinguished into.
Simple: polyester weft impregnated with a colloidal lipid matrix rich in saccharide factors.
Interactive: composed entirely of polyacrylate­absorbent bers, detergents, and gelling agents and a TLC-NOSF matrix. It is also marketed in edged form with silicone adhesive margins.
With the exception of the edged dressing, they all require secondary dressing.
The choice of type is based primarily on the level of exudation.
They can remain in place for up to seven days.
Use is indicated in cleansed lesions, both acute and chronic. It is noteworthy that the TLC­NOSF matrix: is the only treatment recom­mended by Nice (UK) for the management of patients with venous lesions of the lower extrem­ities and diabetic foot; it has been included in the 2019 guidelines compiled by the International
Working Group on the Diabetic Foot the best standard of care in noninfected neuropathic dia­betic ulcers [100].
They require secondary dressing. They can be
placed under bandages.
There are numerous devices placed on the market that, by regulating the characteristics of the ulcer bed (ES pH), exert a reduction in the levels of MMPs. These may include modulators of the pH of the wound environment through an ion exchange mechanism, acetate mesh media containing potassium chloride, rubidium chlo­ride, calcium chloride, zinc chloride, potassium citrate, and citric acid.
References
1. Schoukens G.Bioactive dressings to promote wound healing. Sawston: Woodhead Publishing; 2019.
2. Alven S, Peter S, Mbese Z, Aderibigbe BA.Polymer­based wound dressing materials loaded with bioac­tive agents: potential materials for the treatment of diabetic wounds. Polymers. 2022;14:724. https://doi.
org/10.3390/polym14040724.
3. Laurano R, Bofto M, Ciardelli G, Chiono V.Wound dressing products: a translational investigation from the bench to the market. Eng Regen. 2022;3:182–200.
4. Reilly DM, Lozano J.Skin collagen through the life stages: importance for skin health and beauty. Plast Aesthetic Res. 2021;8:2.
5. Ricard-Blum S. The collagen family. Cold Spring Harb Perspect Biol. 2011;3:a004978.
6. Mathew-Steiner SS, Roy S, Sen CK. Collagen in wound healing. Bioengineering. 2021;8:63. https://
doi.org/10.3390/bioengineering8050063.
7. Onursal C, Dick E, Angelidis I, Schiller HB, Staab­Weijnitz CA.Collagen biosynthesis, processing, and maturation in lung ageing. Front Med. 2021;8:593874.
https://doi.org/10.3389/fmed.2021.593874.
8. Sorushanova A, Delgado LM, Wu Z, Shologu N, Kshirsagar A, Raghunath R, Mullen AM, Bayon Y, Pandit A, Raghunath M, et al. The collagen Suprafamily: from biosynthesis to advanced biomate­rial development. Adv Mater. 2019;31:1801651.
9. Taguchi T, Razzaque MS. The collagen-specic molecular chaperone HSP47: is there a role in bro­sis? Trends Mol Med. 2007;13(2):45–53.
10. San Antonio JD, Jacenko O, Fertala A, Orgel J.Collagen structure-function mapping informs appli­cations for regenerative medicine. Bioengineering. 2020;8:3.
11. Govindaraju P, Todd L, Shetye S, Monslow J, Puré E. CD44-dependent inammation, brogenesis, and collagenolysis regulates extracellular matrix remodel-
23 Bioinductive Dressing
https://t.me/medicina_free
241
ing and tensile strength during cutaneous wound heal­ing. Matrix Biol. 2019;75–76:314–30.
12. Pallaske F, Pallaske A, Herklotz K, Boese­Landgraf J. The signicance of collagen dressings in wound management: a review. J Wound Care. 2018;27(10):692–702.
13. Amirrah IN, Farhanulhakim M, Razip M, Tabata Y, Bt R, Idrus H, Nordin A, Fauzi MB.Antibacterial­integrated collagen Wound dressing for diabetes­related foot ulcers: an evidence-based review of clinical studies. Polymers. 2020;12:2168.
14. Gaspar-pintiliescu A, Stanciuc A, Craciunescu O. Natural composite dressings based on collagen, gelatin and plant bioactive compounds for wound heal­ing: a review. Int J Biol Macromol. 2019;138:854–65.
15. Furlan D, Bonfanti G, Scappaticci G. Non-porous collagen sheet for therapeutic use, and the method and apparatus for preparing it. US Patent. #5785983.
1993.
16. Wahab N, Roman M, Chakravarthy D, Luttrell T.The use of a pure native collagen dressing for wound bed preparation prior to use of a living bi-layered skin substitute. J Am Coll Clin Wound Spec. 2015;6:2–8.
17. Elgharably H, Roy S, Khanna S, Abas M, DasGhatak P, Das A, Mohammed K, Sen CK.A modied col­lagen gel enhances healing outcome in a preclinical swine model of excisional wounds. Wound Repair Regen. 2013;21:473–81.
18. Watt PW, Harvey W, Wiseman D, Light N, Saferstein L, Cini J.Wound dressing materials comprising col­lagen and oxidized cellulose. European Patent. EP 1325754 B1.
19. DiTizio V, DiCosmo F, Xiao Y.Non-adhesive elastic gelatin matrices. US Patent. US 8,628,800 B2. 2014.
20. Mbese Z, Alven S, Aderibigbe BA.Collagen-based nanobers for skin regeneration and wound dressing applications. Polymers. 2021;13:4368.
21. Tavianatou AG, Caon I, Franchi M, Piperigkou Z, Galesso D, Karamanos NK. Hyaluronan: molecular size-dependent signaling and biologi­cal functions in inammation and cancer. FEBS J. 2019;286(15):2883–908. https://doi.org/10.1111/
febs.14777. Epub 2019 Feb 21.
22. Bohaumilitzky L, Huber A-K, Stork EM, Wengert S, Woel F, Boehm H. A trickster in disguise: Hyaluronan's ambivalent roles in the Matrix. Front Oncol. 2017;7:242. https://doi.org/10.3389/
fonc.2017.00242. eCollection 2017.
23. Kouvidi K, Berdiaki A, Nikitovic D, Katonis P, Afratis N, Hascall VC, Karamanos NK, Tzanakakis GN.Role of receptor for hyaluronic acid-mediated motility (RHAMM) in Low Molecular Weight Hyaluronan (LMWHA)-mediated brosarcoma cell adhesion. J Biol Chem. 2011;286(44):38509–20.
24. Yang C, Cao M, Liu H, He Y, Xu J, Du Y, Liu Y, Wang W, Cui L, Hu J, Gao F.The high and low Molecular weight forms of Hyaluronan have distinct effects on CD44 clustering. J Biol Chem. 2012;287(51):43094–
107. https://doi.org/10.1074/jbc.M112.349209.
25. Graça MFP, Miguela SP, Cabrala CSD, Correia IJ. Hyaluronic acid—based wound dressings: a review. Carbohydr Polym. 2020;241:116364. https://
doi.org/10.1016/j.carbpol.2020.116364.
26. Baldino L, Cardea S, Reverchon E.Optimization of hyaff membranes morphology produced by super­critical phase separation for biomedical applica­tions. Chem Eng Trans. 2017;57:1333–8. https://doi.
org/10.3303/CET1757223.
27. Rossi M, Marrazzo P. The potential of honeybee products for biomaterial applications. Biomimetics. 2021;6:6.
28. Combarros-Fuertes P, Fresno JM, Estevinho MM, Sousa-Pimenta M, Tornadijo ME, Estevinho LM. Honey: another alternative in the ght against antibiotic-resistant bacteria? Antibiotics. 2020;9:774.
29. Campeau MEM, Patel R. Antibiolm activity of Manuka honey in combination with antibiotics. Int J Bacteriol. 2014;2014:795281.
30. Maddocks SE, Jenkins RE.Honey: a sweet solution to the growing problem of antimicrobial resistance? Future Microbiol. 2013;8:1419–29.
31. Silvia PMD, Gauche C, Gonzaga LV, Costa ACO, Fett R. Honey: chemical composition, stability and authenticity. Food Chem. 2016;196:309–23.
32. Combarros-Fuertes P, Valencia-Barrera RM, Estevinho LM, Dias LG, Castro JM, Tornadijo ME, Fresno JM.Spanish honeys with quality brand: a mul­tivariate approach to physicochemical parameters, microbiological quality, and oral origin. J Apic Res. 2019;58:92–103.
33. Hixon KR, Klein RC, Eberlin CT, Linder HR, Ona WJ, Gonzalez H, Sell SA.A critical review and per­spective of honey in tissue engineering and clinical wound healing. Adv Wound Care. 2019;8:403–15.
34. Molan PC. Honey: antimicrobial actions and role in disease management. In: New strategies combating bacterial infection. Weinheim: Wiley; 2009. p. 229–
53. ISBN 9783527322060.
35. Krishnakumar GS, Mahendiran B, Gopalakrishnan S, Muthusamy S, Malarkodi Elangovan S.Honey based treatment strategies for infected wounds and burns: a systematic review of recent pre-clinical research. Wound Med. 2020;30:100188.
36. Cooper R, Jenkins L, Rowlands R.Inhibition of bio­lms through the use of Manuka honey. Wounds. 2011;7:24–32.
37. Merckoll P, Jonassen TØ, Vad ME, Jeansson SL, Melby KK. Bacteria, biolm and honey: a study of the effects of honey on “planktonic” and biolm­embedded chronic Wound bacteria. Scand J Infect Dis. 2009;41:341–7.
38. Jenkins R, Cooper R. Improving antibiotic activ­ity against Wound pathogens with Manuka honey invitro. PLoS One. 2012;7:e45600.
39. Scepankova H, Combarros-Fuertes P, Fresno JM, Tornadijo ME, Dias MS, Pinto CA, Saraiva JA, Estevinho LM. Role of honey in advanced Wound care. Molecules. 2021;26:4784.
242
https://t.me/medicina_free
F. D’Andrea and F. Mosella
40. Brudzynski K, Miotto D. The relationship between the content of Maillard reaction-like products and Bioactivity of Canadian honeys. Food Chem. 2011;124:869–74.
41. Stewart JA, McGrane OL, Wedmore IS. Wound Care in the Wilderness: is there evidence for honey? Wilderness Environ Med. 2014;25:103–10.
42. Eteraf-Oskouei T, Naja M, Gharehbagheri A.Natural honey: a new and potent anti-Angiogenic agent in the air-pouch model of inammation. Drug Res. 2013;64:530–6.
43. Barui A, Mandal N, Majumder S, Das RK, Sengupta S, Banerjee P, Ray AK, Roychaudhuri C, Chatterjee J.Assessment of Molecular events during invitro re­epithelialization under honey-alginate Matrix ambi­ence. Mater Sci Eng C. 2013;33:3418–25.
44. Manisha Deb Mandal. Shyamapada Mandal: honey: its medicinal property and antibacterial activity. Asian Pac J Trop Biomed. 2011;1(2):154–60.
45. Annapoorani A, Anilakumar KR, Khanum F, Murthy NA, Bawa AS.Studies on the physicochemical char­acteristics of heated honey, honey mixed with ghee and their food consumption pattern by rats. Ayu. 2010;31(2):141–6.
46. Molan P, Rhodes T.Honey: a biologic Wound dress­ing. Wounds. 2015;27:141–51. [PubMed].
47. Wayne RP. Chemistry of atmospheres. Oxford: Oxford Science; 1991. Chimica ambientale, Colin Baird e Michael Cann. Terza edizione italiana con­dotta sulla quinta edizione americana. A cura di Eudes Lanciotti e Massimo Stefani.Brugherio. Edizione Zanichelli. 2013.
48. Ministero della Salute. Direzione generale della pre­venzione sanitaria. Direzione generale della comuni­cazione e dei rapporti europei e internazionali: ozono.
2015. https://www.salute.gov.it/imgs/C_17_opusco-
liPoster_283_ulterioriallegati_ulterioreallegato_8_ alleg.pdf.
49. Bocci V. Ozone: a new medical drug. Holanda: Springer; 2005.
50. Schwartz A, Sánchez GM, Sabah F. Madrid declara­tion on ozone therapy. Madrid: International Scientic Committee of Ozone Therapy; 2015.
51. Anzolin AP, da Silveira-Kaross NL, Bertol CD.Ozonated oil in wound healing: what has already been proven? Med Gas Res. 2020;10(1):54–9.
https://doi.org/10.4103/2045- 9912.279985. PMID:
32189671; PMCID: PMC7871935.
52. Sadowska J, Johansson B, Johannessen E, Friman R, Broniarz-Press L, Rosenholm JB. Characterization of ozonated vegetable oils by spectroscopic and chromatographic methods. Chem Phys Lipids. 2008;151:85–91.
53. Marmo E.Farmacologia generale e speciale. Torino: UTET; 1991. p.146.
54. Bocci V, Zanardi I, Travagli V. Oxygen/ozone as a medical gas mixture. A critical evaluation of the vari­ous methods claries positive and negative aspects. Med Gas Res. 2011;1:6.
55. Cardoso CC, Dias Filho E, Pichara NL, Campos EGC, Pereira MA, Fiorini JE. Ozonoterapia como tratamento adjuvante na ferida de pé diabético. Rev Assoc Med Minas Gerais. 2010;20:442–5.
56. Shi D, Sheng A, Chi L.Glycosaminoglycan-Protein interactions and their roles in human disease. Front Mol Biosci. 2021;8:639666. https://doi.org/10.3389/
fmolb.2021.639666.
57. da Voet DC, Pratt W, Voet JG, Fondamenti di Biochimica. Zanichelli editore spa. 2013.
58. Sodhi H, Panitch A. Glycosaminoglycans in Tissue Engineering: A Review. Biomolecules. 2020; 11(1):29. https://doi.org/10.3390/biom11010029. PMID: 33383795; PMCID: PMC7823287.
59. Melrose. Glycosaminoglycans in wound healing. Bone Tissue Regener Insights. 2016;7:29–50. https://
doi.org/10.4137/BTRI.S38670.
60. Arosio E, Ferrari G, Santoro L, Gianese F, Coccheri S, Mesoglycan Venous Insufciency Group. A placebo-controlled, double-blind study of mesogly­can in the treatment of chronic venous ulcers. Eur J Vasc Endovasc Surg. 2001;22:365–72. https://doi.
org/10.1053/ejvs.2001.1478.
61. Tufano A, Arturo C, Cimino E, Di Minno MN, DiCapua M, Cerbone AM, Di Minno G.Mesoglycan: clinical evidences for use in vascular diseases. Int J Vasc Med. 2010;2010:390643. https://doi.
org/10.1155/2010/390643.
62. Belvederea R, Valentina Bizzarro A, Parentea L, Petrella F, Petrella A.Effects of Prisma Skin dermal regeneration device containing glycosaminoglycans on human keratinocytes and broblasts. Cell Adh Migr. 2018;12(2):168–83. https://doi.org/10.1080/19
336918.2017.1340137.
63. Bizzarro V, Belvedere R, Pessolano E, Parente L, Petrella F, Perretti M, Petrella A.Mesoglycan induces keratinocyte activation by triggering syndecan-4 path­way and the formation of the annexin A1/S100A11 complex. J Cell Physiol. 2019;234(11):20174–92.
https://doi.org/10.1002/jcp.28618.
64. Petrella F, Belvedere R, Labbro V, Apicella A, Bizzarro V, Pessolano E, Parente L, Petrella A. A new phar­maceutical device containing mesoglycan modulates broblasts function in vivo. Pharmacologyonline. 2020;1:20–30.
65. Belvedere R, Bizzarro V, Parente L, Petrella F, Petrella A.The Pharmaceutical device Prisma® skin promotes invitro angiogenesis through endothelial to mesenchymal transition during skin Wound Healing. Int J Mol Sci. 2017;25(18):pii: E1614. https://doi.
org/10.3390/ijms18081614.
66. Squadrito F, Bitto A, Irrera N, Pizzino G, Pallio G, Minutoli L, Altavilla D.Pharmacological activity and clinical use of PDRN.Front Pharmacol. 2017;8:224.
https://doi.org/10.3389/fphar.2017.00224.
67. Galeano M, Pallio G, Irrera N, Mannino F, Bitto A, Altavilla D, Vaccaro M, Squadrito G, Arcoraci V, Colonna MR, et al. Polydeoxyribonucleotide: a promising biological platform to accelerate
23 Bioinductive Dressing
https://t.me/medicina_free
243
impaired skin wound healing. Pharmaceuticals (Basel). 2021;14(11):1103. https://doi.org/10.3390/
ph14111103. PMID: 34832885; PMCID:
PMC8618295.
68. Chavan AJ, Haley BE, Volkin DB, Mara KE, Verticelli AM, Bruner MW, Draper JP, Burke CJ, Middaugh CR.Interaction of nucleotides with acidic broblast growth factor (FGF-1). Biochemistry. 1994;33:7193–202.
69. Thellung S, Florio T, Maragliano A, Cattarini G, Schettini G. Polydeoxyribonucleotides enhance the proliferation of human skin broblasts: involve­ment of A2 purinergic receptor subtypes. Life Sci. 1999;64:1661–74. https://doi.org/10.1016/
S0024- 3205(99)00104- 6.
70. Jing X, Sun Y, Liu Y, Ma X, Hao H.Alginate/chitosan­based hydrogel loaded with gene vectors to deliver polydeoxyribonucleotide for effective wound healing. Biomater Sci. 2021;9:5533.
71. Squadrito F, Bitto A, Altavilla D, Arcoraci V, De Caridi G, De Feo ME, Corrao S, Pallio G, Sterrantino C, Minutoli L, Saitta A, Vaccaro M, Cucinotta D.The effect of PDRN, an adenosine receptor A2A ago­nist, on the healing of chronic diabetic foot ulcers: results of a clinical trial. J Clin Endocrinol Metab. 2014;99(5):E746–53. https://doi.org/10.1210/
jc.2013- 3569. Epub 2014 Jan 31. Erratum in: J Clin
Endocrinol Metab. 2015 Feb;100(2):763. PMID:
24483158.
72. Valdatta L, Thione A, Mortarino C, Buoro M, Tuinder S. Evaluation of the efcacy of poly­deoxyribonucleotides in the healing process of autologous skin graft donor sites: a pilot study. Curr Med Res Opin. 2004;20:403–8. https://doi.
org/10.1185/030079904125003116.
73. Polito F, Bitto A, Galeano M, Irrera N, Marini H, Cal M, etal. Polydeoxyribonucleotide restores blood ow in an experimental model of ischemic skin aps. J Vasc Surg. 2012;55:479–88. https://doi.org/10.1016/j.
jvs.2011.07.083.
74. Chung KI, Kim HK, Kim WS, Bae TH.The effects of polydeoxyribonucleotide on the survival of random pattern skin aps in rats. Arch Plast Surg. 2013;40:181–
6. https://doi.org/10.5999/aps.2013.40.3.181.
75. Cuomo O, et al. Oligosaccharidic fractions derived from Triticum vulgare extract accelerate tissutal repairing processes in invitro and in vivo models of skin lesions. J Ethnopharmacol. 2015;158:198.
76. Cuomo O, et al. Triticum vulgare extract exerts an antiinammatory action in two in vitro mod­els of inammation in microglial cells. Plos One. 2018;14:e0197493.
77. Romanelli M, et al. Triticum vulgare extract modu­lates protein-kinase B and matrix metalloprotein­ases 9 protein expression in BV-2 cells: bioactivity on inammatory pathway associated with molecu­lar mechanism wound healing. Mediat Inamm. 2020;2020:1.
78. Limauro D, etal. Antioxidant capacity of Rigenase®, a specic aqueous extract of Triticum vulgare. Antioxidants. 2018;7:67.
79. Tito, etal. A Triticum vulgare extract exhibits regen­erating activity during the wound healing process. Clin Cosmet Investig Dermatol. 2020;13:21.
80. Schiraldi C, etal. Molecular mechanisms at the basis of pharmaceutical grade Triticum vulgare extract ef­cacy in prompting keratinocytes healing. Molecules. 2020;25(3):431.
81. Martini P, et al. Efcacy and tolerability of Fitostimoline® in two different forms (soaked gauzes and cream) and Ci-trizan Gel in the topical treat­ment of second-degree supercial cutaneous burns. Dermatol Res Pract. 2011;2011:978291.
82. Silvestrini S, WUWHS. The fundamental role of bioactive medications based on Rigenase® (aqueous extract of Triticum Vulgare) and Phenoxitanol in the treatment of pressure injuries, dehiscences of surgi­cal wounds, rst and second degree burns, abrasions, breast ssures secondary to lactation, anal ssures— an observational study. 2020
83. Dissemond J, Augustin M, Dietlein M, Faust U, Keuthage W, Lobmann R, Münter KC, Strohal R, Stücker M, Traber J, Vanscheidt W, Läuchli S.Efcacy of MMP-inhibiting wound dressings in the treatment of chronic wounds: a systematic review. J Wound Care. 2020;29(2):102–18. https://doi.org/10.12968/
jowc.2020.29.2.102. PMID: 32058850.
84. Lenci E, Cosottini L, Trabocchi A. Novel matrix metalloproteinase inhibitors: an updated pat­ent review (2014–2020). Expert Opin Ther Pat. 2021;31:509.
85. Dissemond J, Dowsett C, Schultz G, Serena T.EPA made easy. Wounds Int. 2013;4:1.
86. Cullen B, Smith R, McCullock E, et al. Mechanism of action of PROMOGRAN®, a protease modulat­ing matrix, for the treatment of diabetic foot ulcers. Wound Repair Regen. 2002;10:16–25.
87. Lee WL, Downey GP. Leukocyte elastase. Physiological functions and role in acute lung injury. Am J Repir Crit Care Med. 2001;164:896–904.
88. Löffek S, Schilling O, Franzke CW. Series “matrix metalloproteinases in lung health and disease”: bio­logical role of matrix metalloproteinases: a critical balance. Eur Respir J. 2011;38(1):191–208. https://
doi.org/10.1183/09031936.00146510. Epub 2010
Dec 22. PMID: 21177845.
89. Loffek S, Schilling O, Franzke C-W. Biological role of matrix metalloproteinases: a critical bal­ance. Eur Respir J. 2011;38:191–208. https://doi.
org/10.1183/09031936.00146510.
90. Rai RR, Phadke MS. Plasma antiprotease status indifferent respiratory disorders. Int J Pulmon Med. 2007;7(1):1. https://doi.org/10.5580/1d0.
91. Alameddinea HS, Morganb JE. Matrix metallopro­teinases and tissue inhibitor of metalloproteinases review. J Neuromusc Dis. 2016;3:455–73.
92. McCarty SM, Cochrane CA, Clegg PD, Percival SL.The role of endogenous and exogenous enzymes in chronic wounds: a focus on the implications of aberrant levels of both host and bacterial pro­teases in wound healing. Wound Repair Regen. 2012;20(2):125–36.
244
https://t.me/medicina_free
F. D’Andrea and F. Mosella
93. Widgerow AD. Deconstructing the stalled wound review. Wounds. 2012;24(3):58–66.
94. Loh ML, Goh BKL, Kong Y, etal. Combination ther­apy of oxidised regenerated cellulose/collagen/silver dressings with negative pressure wound therapy for coverage of exposed critical structures in complex lower extremity wounds. Int Wound J. 2020;17:1356–
65. https://doi.org/10.1111/iwj.13406.
95. Cullen B, Watt PW, Lundqvist C, et al. The role of oxidised regenerated cellulose/collagen in chronic wound repair and its potential mechanism of action. Int J Biochem Cell Biol. 2002;34(12):1544–56.
96. Richard JL, Martini J, Bonello Faraill MM, Bemba JM, Lepeut M, Truchetet F, Ehrler S, Schuldiner S, Sauvadet A, Bohbot S.Management of diabetic foot ulcers with a TLC-NOSF wound dressing. J Wound Care. 2012;21(3):142–7. https://doi.org/10.12968/
jowc.2012.21.3.142. PMID: 22399083.
97. Lázaro-Martínez JL, Edmonds M, Rayman G, Apelqvist J, Van Acker K, Hartemann A, Martini J, Lobmann R, Bohbot S, Kerihuel JC, Piaggesi A.Optimal wound closure of diabetic foot ulcers with
early initiation of TLC-NOSF treatment: post-hoc analysis of explorer. J Wound Care. 2019;28(6):358–
67. https://doi.org/10.12968/jowc.2019.28.6.358. PMID: 31166858.
98. Schmutz JL, Meaume S, Fays S, Ourabah Z, Guillot B, Thirion V, Collier M, Barrett S, Smith J, Bohbot S, Dompmartin A.Evaluationof the nano­oligosaccharide factor lipido-colloid matrix in the local management of venous leg ulcers: results of a randomised, controlled trial. Int Wound J. 2008;5:172–82.
99. Coulomb B, Couty L, Fournier B, etal. Evaluation of the matrix impregnated with NOSF (Nano oligo saccharide factor) in an invitro dermal reconstruc­tion model. JPC. 2008;63(8):54–7.
100. Nair H, Venkateshwaran N, Seetharaman SS, Deng W, Uthaipaisanwong A, Galea E.Benets of sucrose octasulfate (TLC-NOSF) dressings in the treatment of chronic wounds: a systematic review. J Wound Care. 2021;30(Sup4):S42–52. https://
doi.org/10.12968/jowc.2021.30.Sup4.S42. PMID:
33856929.
Skin Substitutes
https://t.me/medicina_free
VitoCazzato, GraceMarchi, MariaGiuliaSpazzapan, andGiovanniPapa
24
24.1 Introduction
The skin represents the largest external defense system of the human body and protects the organ­ism from the action of pathogenic agents. It is made of three layers: the epidermis, the dermis, and the subcutaneous tissue, and acts as physical barrier against traumatic penetration. A vascular system that provides the tissues with oxygen and nutrients exists within the dermis that is made of connective tissue, granting elasticity and mechan­ical resistance. The hypodermis, or subcutaneous fat, is the deepest layer that provides both thermic and mechanical protection.
When injured, an inammatory response with deployment of immune cells is activated, with sub­sequent release of cytokines which play a key role in re-epithelialization and cutaneous remodeling processes. Precisely, during wound healing, bro­blasts’ activity is crucial for dermal repair. In pri­mary-intention healing, they produce collagen and extracellular matrix proteins that recreate, within correct timing, an organized and well-cellularized type of dermis. In the context of secondary-inten-
V. Cazzato · G. Marchi · G. Papa (*) Plastic Surgery Unit, University of Trieste, Cattinara Hospital, Trieste, Italy e-mail: giovanni.papa@asugi.sanita.fvg.it
M. G. Spazzapan Department of Molecular Biomedicine University of Trieste, Trieste, Italy e-mail: mariagiulia.spazzapan@phd.units.it
tion healing, broblasts’ hyperactivity forms a brous and highly cellularized scar tissue via gran­ulation tissue. Therefore, the newly formed scar tissue does not allow complete functional repair, leading to a skin with different characteristics. It is easier that, in patients with comorbidities such as hypovascularization, a deep wound is transformed into chronic and re- epithelization can only take place from the margins.
Large post-traumatic tissue loss has lead researchers to develop new technologies to improve wound coverage, with the aim of restor­ing the skin and all its functions. Injuries and burn that reach the deep part of the dermis, or further down beyond it, struggle to heal by sec­ondary intention and become chronic wounds only after a prolonged amount of time.
A reliable surgical solution has been found for these conditions and consists of skin grafts: these can be divided into full-thickness skin grafts (FTSG) or split-thickness skin grafts (STSG), the rst ones including the epidermis and the entire dermis, the second ones including the epidermis and only part of the dermis.
This surgical option, despite its versatility, comes with several downsides such as donor site pain, failed take of the graft, limited availability of donor sites. These main reasons have encour­aged researchers to consider surgical alternatives for wound coverage, such as the use skin substi­tutes or bio-scaffolds to minimize donor site mor­bidity up to the preservation of autologous
© The Author(s), under exclusive license to Springer Nature Switzerland AG 2023 M. Maruccia et al. (eds.), Pearls and Pitfalls in Skin Ulcer Management,
https://doi.org/10.1007/978-3-031-45453-0_24
245
246
https://t.me/medicina_free
V. Cazzato et al.
tissues. Skin substitutes consist of biomaterials developed to accelerate wound healing, provid­ing extracellular matrix (ECM) substitutes [1].
Their role is to act as barrier against microor­ganisms, to minimize pain, encourage wound healing, and help restore the protective function of the skin. Moreover, their use leads to an improvement of cutaneous regeneration (orga­nized in consecutive phases), to a reduction of scar contracture, and improves the quality and the elasticity of the neodermis, along with reduc­ing donor site morbidity.
Dermal substitutes have been largely utilized to minimize the normal biological response linked to myobroblast activity, such as wound scar contracture. Nathoo etal. [2] have provided a list of properties an “ideal cutaneous substitute” should present:
– infection resistance – lack of antigenicity – sustainable costs – wide availability – simple application and removal – stability and durability.
protection from liquid loss, adaptability and exibility to the wound bed’s characteristics [3], restore functional and aesthetic properties [4], provide a stable and biodegradable scaffold to promote development of new dermal tissue. allow the host cells to grow and proliferate within the scaffold [5].
Despite constant progress in the development of skin substitutes, to this day there is not a single product that is considered to be the gold standard for the treatment of wounds that require restora­tion of continuity and functionality.
Skin substitutes should have functional and structural characteristics that equal those of autologous skin. The ideal skin substitute would be durable, entirely autologous incorporating adnexal structures and adult stem cells. A product with these characteristics, however, is yet to be developed.
24.2 Characteristics andComposition
Cellular migration within the matrix is a funda­mental requirement for regenerative activity: the latter is inuenced by the porosity of the substi­tute. The ideal pore diameter varies between 70 and 120nm.
Cutaneous substitutes are composed of a main element, the scaffold, which interacts with cells and growth factors [6, 7]. The scaffold inside the dermal substitute represents and replicates the extracellular matrix (ECM) and, as the latter, consists of a tridimensional structure: its function is to support adhesion, cellular proliferation, and differentiation along with neo-vascularization processes, which are essential for cellular sur­vival. Cell-matrix interactions within the substi­tute are regulated by the presence of appropriate ligands (alpha1beta1, alpha1beta2) that allow cellular adhesion. Various polymers can be used to create different scaffolds, and each of these provides various diverse bio-chemical and physi­cal properties [6, 7]. The presence of specic ele­ments regulates the stability of the dermal substitute in the body and its degradation time [8] has proven that the presence of macromolecules like chondroitin-6-sulfate stabilize the scaffold improving its bonds with ECM cells, granting in fact the permanence/slowness of the dermal sub­stitute that can thus be invaded by non-cellular components of the host organism. The lack of macromolecules and the breakdown rapidity, instead, allows to promote the formation of gran­ulation tissue, preparing the wound bed for sub­sequent reconstructive surgery.
Three are the main types of biomaterials used as scaffolds: natural, synthetic, and composite (combination of natural and synthetic). Bearing in mind that scaffolds are destined to carry simi­lar characteristics to the ECMs of natural tissues, for this reason natural biomaterials represent ideal components and are therefore the most uti­lized for the production of scaffolds. Biocompatible materials that are commonly used in tissue engineering include collagen, gelatin, elastin, hyaluronic acid (HA), brin/bronectin [9]. Despite collagen being the main element,
24 Skin Substitutes
https://t.me/medicina_free
247
most scaffolds gain different and specic invitro characteristics according to which biomaterial is added: in this way, it is also possible to predict clinical effects of the different dermal substitutes.
Various studies have focused on the possibility of modifying collagen’s structure to allow the sub­stitute to gain further characteristics: by adding ECM proteins to type I collagen for instance, such as tropoelastin, enhances broblasts’ proliferation and migration rate in vitro [10]. Chitosan cross­linked collagen creates an optimal potential for the migration of keratinocytes and re- epithelialization of the wound [11]. The addition of broblast growth factor 2 (FGF2) or vascular endothelial growth factor (VEGF) to heparin reticulated col­lagen scaffold raises its angiogenic potential [12]. The different stability of the various biomaterials allows substitutes to be divided into two big groups: permanent (bio-conductor that allows der­mal replacement and/or granulation tissue forma­tion) and temporary (bio- inductors of granulation tissue) which undergo breakdown and might need to be renewed. This partitioning enables to easily navigate the sea of classications and categoriza­tion currently available in this eld.
It is clear that in order to be permanent, a der­mal substitute must have specic characteristics such as no rejection reaction and/or biological incompatibility. Particularly, analyzing histologi­cal samples of the neodermis obtained from the dermal substitute (e.g., Integra), even after a ve­year time it displays a well-dened and stable 3D structure, with pronounced collagen and elastin invasion and features more comparable to the normal skin rather than to a skin graft [13]: this gives an optimal structural support and a primary healing. The best dermal substitute, reconstruct­ing a well-organized neodermis, with a low amount of cells and a proper balance between collagene bers and ECM, supports a primary healing, like for skin grafts or aps. On the con­trary, bio-inductors are able to stimulate a rapid inammatory response which, through a break­down and production mechanism carried out by macrophages and broblasts, leads to the rapid formation of granulation tissue and a secondary healing.
Classication of dermal substitutes divided into dermo-conductive and dermo-inductive is therefore supported by these principles. These categories were originally introduced by Kim et al. in 2007 [14]. Dermo-conductors, instead, are products that supply a scaffold onto which cells of the nearby tissues can migrate to reach the wound and form the neodermis. Integra (Life­Sciences, Plainsboro, NJ), GraftJackeTechnol­ogy, Arlington TN), Oasis (Smith & Nephew, Memphis, TN), Alloderm (LifeCell, Branchburg, NJ), and EZ Derm (Molnlycke, Gothenburg, Sweden) are examples of these products [1517].
Dermo-inductors include products that pro­vide the wound with cells that stimulate the acti­vation of new growth factors or granulation tissue. Example of such products available on the market include Apligraf(Organogenesis, Canton, MA), Dermagraft (Organogenesis, Canton, MA), TheraSkin (Soluble Systems, LLC, NewportNews, VA), Biobrane (Smith & Nephew, Memphis, TN), and Epicel (Genzyme, Cambridge, MA).
Nevertheless, these types of classications do not consider the clinical aspect of the wound’s healing process. Behavioral and structural prop­erties of a permanent dermal substitute are observed when the wound bed is suitable for graft taking, may not be observed when placed onto a wound bed that has not been properly pre­pared and shows contamination, presence of brin, infection, or inammation.
In this case, the dermal substitute would not adequately blend in with the host tissue. Unsuitable host environments will lead to the breakdown of the dermal substitute that for this reason could only promote the formation of gran­ulation tissue and a secondary healing.
It is clear what an important role the scaffold’s biomaterials play in the context of dermal substitutes.
Lets analyze in detail which scaffold biomate­rials are most commonly used in tissue engineering:
Collagen: it is considered the main source of traction endurance of the skin [18, 19] and is the most used biomaterial for the production of skin