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1.
Int Wound J ; 21(10): e70047, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39376068

RESUMEN

Surgical success includes a planned incision, achieving haemostasis, good mechanical closure and optimal maintenance of the surgical wound. New materials, as tissue adhesives, have been suggested as substitutes for sutures, to overcome their disadvantages. This study aimed at gathering the differences of using surgical adhesives in oral surgery compared with the conventional method of using sutures as a wound closure technique. PRISMA analyses, PICO criteria and PubMed/Medline database, EBSCO and Cochrane Library were used for research. Inclusion criteria included prospective, randomized controlled trials and case-control studies published in English with full access, where clinical advantages and demerits/limitations were reported in patients who underwent oral surgical incisions, without time restrictions. Exclusion criteria comprised literature with lower level of evidence. A total of 15 studies were assessed and analysed 15 parameters as alternatives to sutures (100%), cost-effectiveness (6,6%), postoperative pain (53,3%), time consumption (73,3%), haemostasis (46,6%), homeostasis (13,3%), aids healing (26,6%), tissue inflammation (26,6%), safety (6,6%), graft dimension (3,13), biocompatibility (13,3%), adhesion to tissue (6,6%), bacteriostatic effect (20%), oedema (13,3%) and ease of application (26,6). Selected articles' results indicate that surgical glues can be a suitable alternative and/or adjuvant to oral sutures, presenting numerous advantages.


Asunto(s)
Adhesivos Tisulares , Cicatrización de Heridas , Humanos , Adhesivos Tisulares/uso terapéutico , Técnicas de Cierre de Heridas , Herida Quirúrgica/cirugía , Femenino , Masculino , Procedimientos Quirúrgicos Orales/métodos , Adulto , Persona de Mediana Edad , Anciano , Anciano de 80 o más Años
2.
Arch Dermatol Res ; 316(10): 693, 2024 Oct 16.
Artículo en Inglés | MEDLINE | ID: mdl-39412648

RESUMEN

OBJECTIVE: To investigate the efficacy of medical glue in halting fluid extravasation at needle insertion sites in patients with severe edema. METHODS: Sixty patients with severe edema were recruited between June 2022 and June 2023 and randomly allocated into either the control group or the experimental group, with 30 cases in each. In the experimental group, after intramuscular injection, medical glue was administered at the needle insertion site, and covered with gauze dressing upon curing, and subsequently subjected to pressure bandaging. Patients were instructed to limit their activity. Meanwhile, the control group received conventional nursing procedures involving pressure bandaging and activity restriction. The effectiveness of nursing interventions in halting exudation, duration of hospitalization, duration of exudation, nursing expenses, skin complications (infection, rash, abrasion, abnormal sensation, etc.), and patient satisfaction with nursing care were monitored. RESULTS: Comparison between the two groups revealed statistically significant differences in several aspects: the success rate of halting exudation, duration of exudation, total skin complication rate, and overall satisfaction [83.3% vs. 20.0%, (2.20 ± 2.76) days vs. (7.33 ± 3.28) days, 6.67% vs. 33.33%, 80.00% vs. 36.67%, P < 0.05]. However, there were no statistically significant differences in hospitalization time and nursing expenses [(14.50 ± 5.17) days vs. (14.00 ± 3.95) days, (537.53 ± 264.19) yuan vs. (661.97 ± 305.55) yuan, P > 0.05]. CONCLUSION: Medical glue demonstrates effectiveness in halting fluid extravasation at needle insertion sites among patients experiencing severe edema. Additionally, it reduces the duration of exudation, diminishes skin complications resulting from exudation, and significantly enhances patient satisfaction with nursing care. Given these benefits, its clinical adoption and application are highly recommended.


Asunto(s)
Edema , Extravasación de Materiales Terapéuticos y Diagnósticos , Humanos , Femenino , Masculino , Persona de Mediana Edad , Edema/terapia , Extravasación de Materiales Terapéuticos y Diagnósticos/diagnóstico , Extravasación de Materiales Terapéuticos y Diagnósticos/prevención & control , Anciano , Adulto , Satisfacción del Paciente , Inyecciones Intramusculares , Adhesivos/efectos adversos , Adhesivos/administración & dosificación , Resultado del Tratamiento , Adhesivos Tisulares/administración & dosificación , Adhesivos Tisulares/efectos adversos , Agujas/efectos adversos , Vendajes
3.
BMC Surg ; 24(1): 314, 2024 Oct 16.
Artículo en Inglés | MEDLINE | ID: mdl-39415231

RESUMEN

BACKGROUND: Postoperative pancreatic fistula (POPF) continues to be the most common complication after distal pancreatectomy (DP). Recent advancements in surgical techniques have established minimally invasive distal pancreatectomy (MIDP) as the standard treatment for various conditions, including pancreatic cancer. However, MIDP has not demonstrated a clear advantage over open DP in terms of POPF rates, indicating the need for additional strategies to prevent POPF in MIDP. This trial (WRAP study) aims to evaluate the efficacy of wrapping the pancreatic stump with polyglycolic acid (PGA) mesh and fibrin glue in preventing clinically relevant (CR-) POPF following MIDP. METHODS: This multicenter, randomized controlled trial will include patients scheduled for laparoscopic or robotic DP for tumors in the pancreatic body and/or tail. Eligible participants will be centrally randomized into either the control group (Group A) or the intervention group (Group B), where the pancreatic stump will be reinforced by PGA mesh and fibrin glue. In both groups, pancreatic transection will be performed using a bioabsorbable reinforcement-attached stapler. A total of 172 patients will be enrolled across 14 high-volume centers in Japan. The primary endpoint is the incidence of CR-POPF (International Study Group of Pancreatic Surgery grade B/C). DISCUSSION: The WRAP study will determine whether the reinforcement of the pancreatic stump with PGA mesh and fibrin glue, a technique whose utility has been previously debated, could become the best practice in the era of MIDP, thereby enhancing its safety. TRIAL REGISTRATION: This trial was registered with the Japan Registry of Clinical Trials on June 15, 2024 (jRCTs032240120).


Asunto(s)
Adhesivo de Tejido de Fibrina , Pancreatectomía , Fístula Pancreática , Ácido Poliglicólico , Complicaciones Posoperatorias , Mallas Quirúrgicas , Humanos , Pancreatectomía/métodos , Pancreatectomía/efectos adversos , Fístula Pancreática/prevención & control , Fístula Pancreática/etiología , Fístula Pancreática/epidemiología , Adhesivo de Tejido de Fibrina/uso terapéutico , Ácido Poliglicólico/uso terapéutico , Japón/epidemiología , Complicaciones Posoperatorias/prevención & control , Complicaciones Posoperatorias/etiología , Neoplasias Pancreáticas/cirugía , Laparoscopía/métodos , Laparoscopía/efectos adversos , Femenino , Masculino , Ensayos Clínicos Controlados Aleatorios como Asunto , Adulto , Estudios Multicéntricos como Asunto , Persona de Mediana Edad , Adhesivos Tisulares/uso terapéutico
4.
Int J Mol Sci ; 25(18)2024 Sep 16.
Artículo en Inglés | MEDLINE | ID: mdl-39337473

RESUMEN

Cartilage repair remains a major challenge in human orthopedic medicine, necessitating the application of innovative strategies to overcome existing technical and clinical limitations. Adhesive hydrogels have emerged as promising candidates for cartilage repair promotion and tissue engineering, offering key advantages such as enhanced tissue integration and therapeutic potential. This comprehensive review navigates the landscape of adhesive hydrogels in cartilage repair, discussing identified challenges, shortcomings of current treatment options, and unique advantages of adhesive hydrogel products and scaffolds. While emphasizing the critical need for in situ lateral integration with surrounding tissues, we dissect current limitations and outline future perspectives for hydrogel scaffolds in cartilage repair. Moreover, we examine the clinical translation pathway and regulatory considerations specific to adhesive hydrogels. Overall, this review synthesizes the existing insights and knowledge gaps and highlights directions for future research regarding adhesive hydrogel-based devices in advancing cartilage tissue engineering.


Asunto(s)
Hidrogeles , Ingeniería de Tejidos , Andamios del Tejido , Hidrogeles/química , Humanos , Ingeniería de Tejidos/métodos , Andamios del Tejido/química , Animales , Cartílago Articular , Cartílago/metabolismo , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología
5.
Carbohydr Polym ; 344: 122538, 2024 Nov 15.
Artículo en Inglés | MEDLINE | ID: mdl-39218556

RESUMEN

An ideal adhesive hydrogel must possess high adhesion to the native tissue, biocompatibility, eligible biodegradability, and good mechanical compliance with the substrate tissues. We constructed an interpenetrating double-network hydrogel containing polysaccharides (alginate and dextran) and nanosized spherical dendrimer by both physical and chemical crosslinking, thus endowing the hydrogel with a broad range of mechanical properties, adhesive properties, and biological functions. The double-network hydrogel has moderate pore sizes and swelling properties. The chelation of calcium ions significantly enhances the tensile and compressive properties. The incorporation of dendrimer improves both the mechanical and adhesive properties. This multicomponent interpenetrating network hydrogel has excellent biocompatibility, tunable mechanical and adhesive properties, and satisfied multi-functions to meet the complex requirements of wound healing and tissue engineering. The hydrogel exhibits promising corneal adhesion capabilities in vitro, potentially supplanting the need for sutures in corneal stromal surgery and mitigating the risks associated with donor corneal damage and graft rejection during corneal transplantation. This novel polysaccharide and dendrimer hydrogel also shows good results in sutureless keratoplasty, with high efficiency and reliability. Based on the clinical requirements for tissue bonding and wound closure, the hydrogel provides insight into solving the mechanical properties and adhesive strength of tissue adhesives.


Asunto(s)
Alginatos , Dendrímeros , Dextranos , Hidrogeles , Adhesivos Tisulares , Alginatos/química , Hidrogeles/química , Dextranos/química , Dendrímeros/química , Adhesivos Tisulares/química , Animales , Trasplante de Córnea/métodos , Humanos , Materiales Biocompatibles/química , Materiales Biocompatibles/farmacología , Resistencia a la Tracción , Conejos , Córnea/cirugía , Cicatrización de Heridas/efectos de los fármacos , Reactivos de Enlaces Cruzados/química
7.
Acta Biomater ; 188: 103-116, 2024 Oct 15.
Artículo en Inglés | MEDLINE | ID: mdl-39243837

RESUMEN

Traditional adhesive hydrogels perform well in tissue adhesion but they fail to prevent postoperative tissue adhesion. To address this challenge, a biodegradable Janus adhesive hydrogel (J-AH) was designed and fabricated by the assembly of three different functional layers including anti-adhesive layer, reinforceable layer, and wet tissue adhesive layer. Each layer of J-AH serves a specific function: the top zwitterionic polymeric anti-adhesive layer shows superior resistance to cell/protein and tissue adhesion; the middle poly(vinyl alcohol)/tannic acid reinforceable matrix layer endows the hydrogel with good mechanical toughness of ∼2.700 MJ/m3; the bottom poly(acrylic acid)/polyethyleneimine adhesive layer imparts tough adhesion (∼382.93 J/m2 of interfacial toughness) to wet tissues. In the rat liver and femoral injury models, J-AH could firmly adhere to the bleeding tissues to seal the wounds and exhibit impressive hemostatic efficiency. Moreover, in the in vivo adhesion/anti-adhesion assay of J-AH between the defected cecum and peritoneal walls, the top anti-adhesive layer can effectively inhibit undesired postoperative abdominal adhesion and inflammatory reaction. Therefore, this research may present a new strategy for the design of advanced bio-absorbable Janus adhesive hydrogels with multi-functions including tissue adhesion, anti-postoperative adhesion and biodegradation. STATEMENT OF SIGNIFICANCE: Despite many adhesive hydrogels with tough tissue adhesion capability have been reported, their proclivity for undesired postoperative adhesion remains a serious problem. The postoperative adhesion may lead to major complications and even endanger the lives of patients. The injectable hydrogels can cover the irregular wound and suppress the formation of postoperative adhesion. However, due to the lack of adhesive properties with tissue, it is difficult for the hydrogels to maintain on the wound surface, resulting in poor anti-postoperative adhesion effect. Herein, we design a Janus adhesive hydrogel (J-AH). J-AH integrates together robust wet tissue adhesion and anti-postoperative adhesion. Therefore, this research may present a new strategy for the design of advanced bio-absorbable Janus adhesive hydrogels.


Asunto(s)
Hidrogeles , Alcohol Polivinílico , Ratas Sprague-Dawley , Animales , Alcohol Polivinílico/química , Alcohol Polivinílico/farmacología , Adherencias Tisulares/prevención & control , Adherencias Tisulares/patología , Hidrogeles/química , Hidrogeles/farmacología , Ratas , Masculino , Adhesivos Tisulares/farmacología , Adhesivos Tisulares/química , Técnicas de Cierre de Heridas , Resinas Acrílicas/química , Resinas Acrílicas/farmacología , Humanos , Ratones , Taninos/química , Taninos/farmacología , Polietileneimina/química , Polietileneimina/farmacología
8.
J Wound Ostomy Continence Nurs ; 51(5S Suppl 5): S9-S17, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39313962

RESUMEN

In clinical practice, a large variety of medical devices adhere to skin to perform their function. The repeated application and removal of these devices can lead to skin damage or medical adhesive-related skin injury. Awareness of this problem has increased in the past decade, and this adverse event can be prevented with appropriate selection of adhesive products and the appropriate techniques for application and removal. A wide variety of adhesives and backing systems have been developed to create medical devices with an array of attributes, so they can accomplish many different indications in the clinical setting and meet various needs, including doing the clinical job without damaging the skin and causing further patient complications. The selection of an adhesive product should take into consideration a patient's skin assessment and history of medical adhesive-related skin injury, and using only the minimal adhesive strength needed to perform the function while protecting the skin from damage.


Asunto(s)
Adhesivos , Humanos , Adhesivos/efectos adversos , Adhesivos Tisulares/efectos adversos , Adhesivos Tisulares/uso terapéutico , Piel/lesiones
9.
ACS Appl Mater Interfaces ; 16(36): 47226-47241, 2024 Sep 11.
Artículo en Inglés | MEDLINE | ID: mdl-39193631

RESUMEN

The development of multifunctional wound adhesives is critical in clinical settings due to the scarcity of dressings with effective adhesive properties while protecting against infection by drug-resistant bacteria. Polysaccharide and gelatin-based hydrogels, known for their biocompatibility and bioactivity, assist in wound healing. This study introduces a multifunctional bioadhesive hydrogel developed through dynamic covalent bonding and light-triggered covalent bonding, comprising oxidized hyaluronic acid, methacrylated gelatin, and the bacteriocin recently discovered by our lab, named jileicin (JC). The adhesion strength of the hydrogel, measured at 180 kPa, was 4.35 times higher than that of the fibrin glue. Furthermore, the hydrogel demonstrated robust platelet adhesion, procoagulant activity, and outstanding hemostatic properties in a mouse liver injury model. Incorporating JC significantly enhanced the phagocytosis and bactericidal capabilities of the macrophages. This immunomodulatory function on host cells, coupled with its potent bacterial membrane-disrupting ability, makes JC an effective killer against methicillin-resistant Staphylococcus aureus. In wound repair experiments on diabetic mice with infected full-thickness skin defects, the hydrogel treatment group showed a notable reduction in bacterial load, accelerated M2-type macrophage polarization, diminished inflammation, and hastened wound healing. Owing to its outstanding biocompatibility, antibacterial activity, and controlled adhesion, this hydrogel presents a promising therapeutic option for treating infected skin wounds.


Asunto(s)
Antibacterianos , Diabetes Mellitus Experimental , Gelatina , Ácido Hialurónico , Hidrogeles , Cicatrización de Heridas , Animales , Cicatrización de Heridas/efectos de los fármacos , Ácido Hialurónico/química , Ácido Hialurónico/farmacología , Gelatina/química , Hidrogeles/química , Hidrogeles/farmacología , Ratones , Antibacterianos/química , Antibacterianos/farmacología , Diabetes Mellitus Experimental/tratamiento farmacológico , Staphylococcus aureus Resistente a Meticilina/efectos de los fármacos , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología , Humanos , Masculino
10.
Int J Biol Macromol ; 278(Pt 3): 134761, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39151870

RESUMEN

Corneal injuries play a significant role in global visual impairment, underscoring the demand for innovative biomaterials with specific attributes such as adhesion, cohesion, and regenerative potential. In this study, we have developed a biocompatible bioadhesive for corneal reconstruction. Derived from Collagen type I, naturally present in human corneal stromal tissue, the bioadhesive was cross-linked with modified polyethylene glycol diacrylate (PEGDA-DOPA), rendering it curable through visible light exposure and exhibiting superior adhesion to biological tissues even in wet conditions. The physicochemical characteristics of the proposed bioadhesive were customized by manipulating the concentration of its precursor polymers and adjusting the duration of photocrosslinking. To identify the optimal sample with maximum adhesion, mechanical strength, and biocompatibility, characterization tests were conducted. The optimal specimen, consisting of 30 % (w/v) PEGDA-DOPA and cured with visible light for 5 min, exhibited commendable adhesive strength of 783.6 kPa and shear strength of 53.7 kPa, surpassing that of commercialized eye adhesives.Additionally, biocompatibility test results indicated a notably high survival rate (>100 %) of keratocytes seeded on the hydrogel adhesive after 7 days of incubation. Consequently, this designed bioadhesive, characterized by high adhesion strength, robust mechanical strength, and excellent biocompatibility, is anticipated to enhance the spontaneous repair process of damaged corneal stromal tissue.


Asunto(s)
Perforación Corneal , Hidrogeles , Polietilenglicoles , Humanos , Hidrogeles/química , Hidrogeles/farmacología , Perforación Corneal/tratamiento farmacológico , Polietilenglicoles/química , Animales , Materiales Biocompatibles/química , Materiales Biocompatibles/farmacología , Colágeno/química , Colágeno/farmacología , Ensayo de Materiales , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología
11.
Tech Coloproctol ; 28(1): 95, 2024 Aug 05.
Artículo en Inglés | MEDLINE | ID: mdl-39103661

RESUMEN

BACKGROUND: Anastomotic leakage (AL) is the most frequent life-threating complication following colorectal surgery. Several attempts have been made to prevent AL. This prospective, randomized, multicentre trial aimed to evaluate the safety and efficacy of nebulised modified cyanoacrylate in preventing AL after rectal surgery. METHODS: Patients submitted to colorectal surgery for carcinoma of the high-medium rectum across five high-volume centres between June 2021 and January 2023 entered the study and were randomized into group A (anastomotic reinforcement with cyanoacrylate) and group B (no reinforcement) and followed up for 30 days. Anastomotic reinforcement was performed via nebulisation of 1 mL of a modified cyanoacrylate glue. Preoperative features and intraoperative and postoperative results were recorded and compared. The study was registered at ClinicalTrials.gov (ID number NCT03941938). RESULTS: Out of 152 patients, 133 (control group, n = 72; cyanoacrylate group, n = 61) completed the follow-up. ALs were detected in nine patients (12.5%) in the control group (four grade B and five grade C) and in four patients (6.6%), in the cyanoacrylate group (three grade B and one grade C); however, despite this trend, the differences were not statistically significant (p = 0.36). However, Clavien-Dindo complications grade > 2 were significantly higher in the control group (12.5% vs. 3.3%, p = 0.04). No adverse effects related to the glue application were reported. CONCLUSION: The role of modified cyanoacrylate application in AL prevention remains unclear. However its use to seal colorectal anastomoses is safe and could help to reduce severe postoperative complications.


Asunto(s)
Anastomosis Quirúrgica , Fuga Anastomótica , Cianoacrilatos , Recto , Humanos , Fuga Anastomótica/prevención & control , Fuga Anastomótica/etiología , Femenino , Masculino , Estudios Prospectivos , Anciano , Persona de Mediana Edad , Cianoacrilatos/administración & dosificación , Anastomosis Quirúrgica/efectos adversos , Anastomosis Quirúrgica/métodos , Recto/cirugía , Adhesivos Tisulares/uso terapéutico , Técnicas de Sutura , Neoplasias del Recto/cirugía , Resultado del Tratamiento
12.
Adv Mater ; 36(41): e2408538, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39149779

RESUMEN

Hydrogel bioadhesives have emerged as a promising alternative to wound dressings for chronic wound management. However, many existing bioadhesives do not meet the functional requirements for efficient wound management through dynamically mechanical modulation, due to the reduced wound contractibility, frequent wound recurrence, incapability to actively adapt to external microenvironment variation, especially for those gradually-expanded chronic wounds. Here, a self-growing hydrogel bioadhesive (sGHB) patch that exhibits instant adhesion to biological tissues but also a gradual increase in mechanical strength and interfacial adhesive strength within a 120-h application is presented. The gradually increased mechanics of the sGHB patch could effectively mitigate the stress concentration at the wound edge, and also resist the wound expansion at various stages, thus mechanically contracting the chronic wounds in a programmable manner. The self-growing hydrogel patch demonstrated enhanced wound healing efficacy in a mouse diabetic wound model, by regulating the inflammatory response, promoting the faster re-epithelialization and angiogenesis through mechanical modulation. Such kind of self-growing hydrogel bioadhesives have potential clinical utility for a variety of wound management where dynamic mechanical modulation is indispensable.


Asunto(s)
Hidrogeles , Cicatrización de Heridas , Animales , Hidrogeles/química , Ratones , Cicatrización de Heridas/efectos de los fármacos , Humanos , Diabetes Mellitus Experimental , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología
13.
Int J Mol Sci ; 25(16)2024 Aug 22.
Artículo en Inglés | MEDLINE | ID: mdl-39201785

RESUMEN

The impressive adhesive capacity of marine mussels has inspired various fascinating designs in biomedical fields. Mussel-inspired injectable adhesive hydrogels, as a type of promising mussel-inspired material, have attracted much attention due to their minimally invasive property and desirable functions provided by mussel-inspired components. In recent decades, various mussel-inspired injectable adhesive hydrogels have been designed and widely applied in numerous biomedical fields. The rational incorporation of mussel-inspired catechol groups endows the injectable hydrogels with the potential to exhibit many properties, including tissue adhesiveness and self-healing, antimicrobial, and antioxidant capabilities, broadening the applications of injectable hydrogels in biomedical fields. In this review, we first give a brief introduction to the adhesion mechanism of mussels and the characteristics of injectable hydrogels. Further, the typical design strategies of mussel-inspired injectable adhesive hydrogels are summarized. The methodologies for integrating catechol groups into polymers and the crosslinking methods of mussel-inspired hydrogels are discussed in this section. In addition, we systematically overview recent mussel-inspired injectable adhesive hydrogels for biomedical applications, with a focus on how the unique properties of these hydrogels benefit their applications in these fields. The challenges and perspectives of mussel-inspired injectable hydrogels are discussed in the last section. This review may provide new inspiration for the design of novel bioinspired injectable hydrogels and facilitate their application in various biomedical fields.


Asunto(s)
Bivalvos , Hidrogeles , Hidrogeles/química , Animales , Bivalvos/química , Humanos , Materiales Biocompatibles/química , Adhesivos Tisulares/química , Materiales Biomiméticos/química , Adhesivos/química , Inyecciones
15.
ACS Appl Mater Interfaces ; 16(33): 43180-43188, 2024 Aug 21.
Artículo en Inglés | MEDLINE | ID: mdl-39110843

RESUMEN

The development of bioadhesives with strong adhesion and on-demand adhesion-detachment behavior is still critically important and challenging for facilitating painless and damage-free removal in clinical applications. In this work, for the first time, we report the easy fabrication of novel polyurethane-urea (PUU)-based bioadhesives with thermoresponsive on-demand adhesion and detachment behavior. The PUU copolymer was synthesized by a simple copolymerization of low-molecular-weight, hydrophilic, and biocompatible poly(ethylene glycol), glyceryl monolaurate (GML, a special chain extender with a long side hydrophobic alkyl group), and isophorone diisocyanate (IPDI). Here, GML was expected to not only adjust the temperature-dependent adhesion behavior but also act as an internal plasticizer. By simple adjustment of the water content, the adhesion strength of the 15 wt % water-containing PUU film toward porcine skin is as high as 55 kPa with an adhesion energy of 128 J/m2 at 37 °C. The adhesion strength dramatically decreases to only 3 kPa at 10 °C, exhibiting switching efficiency as high as 0.95. Furthermore, the present PUU-based adhesive also shows good on-demand underwater adhesion and detachment with a cell viability close to 100%. We propose that biomaterial research fields, especially novel PUU/polyurethane (PU)-based functional materials and bioadhesives, could benefit from such a novel thermoresponsive copolymer with outstanding mechanical and functional performances and an easy synthesis and scaled-up process as described in this article.


Asunto(s)
Poliuretanos , Poliuretanos/química , Poliuretanos/farmacología , Animales , Porcinos , Humanos , Temperatura , Urea/química , Urea/farmacología , Urea/análogos & derivados , Materiales Biocompatibles/química , Materiales Biocompatibles/farmacología , Materiales Biocompatibles/síntesis química , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología , Adhesivos Tisulares/síntesis química , Adhesión Celular/efectos de los fármacos , Ratones , Adhesivos/química , Adhesivos/farmacología
16.
Science ; 385(6711): 877-883, 2024 Aug 23.
Artículo en Inglés | MEDLINE | ID: mdl-39172835

RESUMEN

Polymer adhesives play an important role in many medical, consumer, and industrial products. Polymers of α-lipoic acid (αLA) have the potential to fulfill the need for versatile and environmentally friendly adhesives, but their performance is plagued by spontaneous depolymerization. We report a family of stabilized αLA polymer adhesives that can be tailored for a variety of medical or nonmedical uses and sustainably sourced and recycled in a closed-loop manner. Minor changes in monomer composition afforded a pressure-sensitive adhesive that functions well in dry and wet conditions, as well as a structural adhesive with strength equivalent to that of conventional epoxies. αLA surgical superglue successfully sealed murine amniotic sac ruptures, increasing fetal survival from 0 to 100%.


Asunto(s)
Polímeros , Ácido Tióctico , Adhesivos Tisulares , Animales , Femenino , Ratones , Polímeros/química , Reciclaje , Ácido Tióctico/química , Adhesivos Tisulares/química , Polimerizacion , Células 3T3 NIH
17.
Neurol Res ; 46(10): 972-981, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39007696

RESUMEN

OBJECTIVES: For nerve injuries, not amendable to tensionless epineural coaptation of the nerve, autografts are the preferred treatment. Although absorbable sutures are not recommended for nerve repair, there is no evidence that non-absorbable sutures are superior to absorbable sutures. This study aims to assess the effectiveness of non-absorbable monofilament nylon sutures, absorbable monofilament vicryl sutures, and fibrin glue when used for nerve grafting. METHODS: Lewis rats (N = 32) were subjected to a sciatic nerve transection and randomly assigned to a group: graft with Nylon, graft with Vicryl, graft with Fibrin Glue, or no graft. Motor function, sensory function, and thermal pain were assessed during a 12-week recovery period, and immunohistochemistry was used to assess macrophage response. RESULTS: At 12 weeks, the Vicryl and Nylon groups had significantly larger ankle angles at to lift off, which is a measure of motor function, compared to injured controls (p < 0.05). Grafted rats displayed no difference in thermal response but hypersensitivity to mechanical stimuli compared to the uninjured hindlimb. The Nylon, Vicryl, and Fibrin Glue groups all had significantly less atrophy of the gastrocnemius muscle compared to injured controls (p < 0.0001). In the Fibrin Glue group, 3/9 grafts did not incorporate. The Nylon group had significantly less (p = 0.0004) axon growth surrounding the suture holes compared to the Vicryl group. There were no differences in the axon counts, motor neurons, or sensory neurons between all grafted rats. CONCLUSIONS: These results demonstrate that vicryl sutures work just as well as nylon for nerve recovery after injury and grafting.


Asunto(s)
Adhesivo de Tejido de Fibrina , Nylons , Poliglactina 910 , Ratas Endogámicas Lew , Animales , Adhesivo de Tejido de Fibrina/farmacología , Ratas , Nervio Ciático/lesiones , Regeneración Nerviosa/fisiología , Regeneración Nerviosa/efectos de los fármacos , Modelos Animales de Enfermedad , Suturas , Adhesivos Tisulares/farmacología , Recuperación de la Función/fisiología , Masculino , Femenino
18.
J Biomed Mater Res A ; 112(12): 2243-2256, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38988200

RESUMEN

Wound closure in surgeries is traditionally achieved using invasive methods such as sutures and staples. Adhesion-based wound closure methods such as tissue adhesives, sealants, and hemostats are slowly replacing these methods due to their ease of application. Although several chemistries have been developed and used commercially for wound closure, there is still a need for better tissue adhesives from the point of view of toxicity, wet-adhesion strength, and long-term bonding. Catechol chemistry has shown great promise in developing wet-set adhesives that meet these criteria. Herein, we have studied the biocompatibility of a catechol-based copolymer adhesive, poly([dopamine methacrylamide]-co-[methyl methacrylate]-co-[poly(ethylene glycol) methyl ether methacrylate]) or poly(catechol-MMA-OEG), which is soluble in water. The adhesive was injected subcutaneously in a mouse model on its own and in combination with a sodium periodate crosslinker. After 72 h, 4 weeks, and 12 weeks, the mice were euthanized and subjected to histopathological analysis. Both adhesives were present and still palpable at the end of 12 weeks. The moderate inflammation observed for the poly(catechol-MMA-OEG) cohort at 72 h had reduced to mild inflammation at the end of 12 weeks. However, the moderate inflammatory response observed for the poly(catechol-MMA-OEG) + crosslinker cohort at 72 h had not subsided at 12 weeks.


Asunto(s)
Materiales Biocompatibles , Bivalvos , Ensayo de Materiales , Adhesivos Tisulares , Agua , Animales , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología , Ratones , Bivalvos/química , Agua/química , Materiales Biocompatibles/química , Solubilidad , Catecoles/química , Catecoles/farmacología
19.
J Biomed Mater Res A ; 112(12): 2301-2313, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-39044597

RESUMEN

Over the past few decades, there have been advancements in the development of high-performance tissue adhesives as alternatives to traditional sutures and staples for rapid and effective wound closure post-surgery. While tissue adhesives offer advantages such as ease of use, short application time, and minimal tissue damage, they also face challenges related to biocompatibility, biodegradability, and adhesive strength. In this study, L-lysine diisocyanate (LDI) and trimethylolpropane (TMP) were utilized as the primary raw materials to produce a prepolymer terminated with NCO, resulting in the development of a new biocompatible polyurethane tissue adhesive (TMP-LDI). Additionally, SiO2 nanoparticles were incorporated into the prepolymer, significantly enhancing the adhesive strength of the TMP-LDI tissue adhesive through the "nanobridging effect," achieving a strength of 170.4 kPa. Furthermore, the SiO2/TMP-LDI tissue adhesive exhibited satisfactory temperature change during curing and degradation performance. In vitro and in vivo studies demonstrated that SiO2/TMP-LDI exhibited good biocompatibility, efficient hemostasis, antimicrobial properties, and the ability to promote wound healing. This research presents a novel approach for the development of tissue adhesives with superior adhesive performance.


Asunto(s)
Poliuretanos , Adhesivos Tisulares , Cicatrización de Heridas , Poliuretanos/química , Adhesivos Tisulares/química , Adhesivos Tisulares/farmacología , Animales , Cicatrización de Heridas/efectos de los fármacos , Ratones , Ensayo de Materiales , Dióxido de Silicio/química , Masculino , Humanos , Materiales Biocompatibles/química , Nanopartículas/química , Ratas Sprague-Dawley
20.
Surg Infect (Larchmt) ; 25(8): 564-573, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39049817

RESUMEN

Background: Wound closure is a critical aspect of medical care, and the choice of closure methods plays a pivotal role in preventing infections. Traditional sutures and staples can introduce foreign material into the wound, increasing the risk of infection. Adhesives offer a potential alternative by providing a physical barrier against microorganisms. Objective: To assess the microbial barrier properties of Exofin High Viscosity Topical Skin Adhesive (HVTSA), a novel adhesive system, against a range of challenge organisms. Methods: This study, conducted by the independent research organization NAMSA (North American Science Associates, LLC), aimed to evaluate the effectiveness of Exofin HVTSA as a microbial barrier. This study was carried out by an independent research organization NAMSA. Challenge organisms, including Staphylococcus aureus, Staphylococcus epidermidis, methicillin-resistant Staphylococcus aureus (MRSA), Pseudomonas aeruginosa, Escherichia coli, Candida albicans, and Aspergillus brasiliensis, were used to evaluate the adhesive's effectiveness. Inocula of each organism were placed on cured Exofin HVTSA test articles and observed for 14 days. Positive and negative control plates were included to validate the effectiveness of the challenge organisms and assess the absence of contamination. Results: Exofin HVTSA demonstrated effective microbial barrier properties against all challenge organisms, except Pseudomonas aeruginosa. No growth or color change was observed for Staphylococcus aureus, Staphylococcus epidermidis, MRSA, Escherichia coli, Candida albicans, and Aspergillus brasiliensis over the 14-day observation period. Pseudomonas aeruginosa exhibited no growth, but showed a color change in two out of five replicates on day 14. Conclusion: Exofin HVTSA demonstrated effective microbial barrier properties for 14 days against a range of common wound pathogens, suggesting its potential as a safe and effective alternative to traditional wound closure methods. Further research is warranted to investigate its efficacy in clinical settings.


Asunto(s)
Adhesivos Tisulares , Adhesivos Tisulares/farmacología , Humanos , Viscosidad , Bacterias/efectos de los fármacos
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