检索结果-南通市图书馆

Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： Carina Hromada Patrick Heimel Markus Kerbl LászlóGál Sylvia Nürnberger Barbara Schaedl James Ferguson Nicole Swiadek Xavier Monforte Johannes C.Heinzel Antal Nógrádi Andreas H.Teuschl-Woller David Hercher Department Life Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian Cluster for Tissue Regeneration ViennaAustria Ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University Clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of Hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNGCs). However, the use of tNGCs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNGC would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNGCs and compared the various features of these improved silk^(+) tNGCs with the tubes without holes(silk^(–) tNGCs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNGCs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNGCs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNGCs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNGCs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

Delayed Grafting as a Valid Technique in burn Management: Experience from a burn Unit in Oman

在线全文

学校读者我要写书评

暂无评论

Modern Plastic surgery 2024年第1期14卷 9-14页

作者： Taif Alsafy Joe Jacob Anish Thadathil Elias Ahmed Salah El Din Salim Mohammed Ghawas Majid Tariq Saud Albusaidi Ahmed Al Jabri Al Anood Al Hadhrami Mutazz Obeid Al Khaldi Moath Abdelhamid Shummo Karim Mohamed Haridi Aml Eid Saleh Said Al-Busaidi Department of Plastic and reconstructive surgery Sultan Qaboos Hospital Salalah Oman ENT Department Al Nahdha Hospital Muscat Oman Department of Plastic Reconstructive and Craniofacial Surgery Khoula Hospital Muscat Oman

Background: Early excision and grafting has been the preferred method of managing major burns around the world since 1970. Considering the advances in health care and the development of new antibiotics over the past 50 years, delayed grafting as a technique for the management of burns over 15%-20% of total body surface area (TBSA) could have comparable results to that of early excision. This study aims to highlight the outcomes of practicing delayed grafting in burn patients. Methods: A case series analysis was performed of 51 patients who were admitted to the burns unit in Sultan Qaboos Hospital Salalah with over 20% TBSA between January 2014 and December 2019. The patients received prophylactic antibiotics and silver sulphadiazine dressing until the burn eschar had completely separated, followed by grafting. Results: Two patients were lost during the entire duration of the study. The mortality rate was comparable to that of early excision, while the rate of hypertrophic scarring was lower than the range reported by other studies. Conclusion: In the management of patients with over 20% TBSA, delayed grafting after complete separation of eschar is still a valid technique.

关键词： burns burn Units burn Management Delayed Grafting Major burns Treatment Efficacy

Bone-targeting engineered small extracellular vesicles carrying anti-miR-6359-CGGGAGC prevent valproic acid-induced bone loss

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第2期9卷 751-765页

作者： Xudong Xie Peng Cheng Liangcong Hu Wu Zhou Detai Zhang Samuel Knoedler Guodong Liu Yuan Xiong Hang Xue Yiqiang Hu Barbara Kern Doha Obed Adriana CPanayi Lang Chen Chenchen Yan Ze Lin Guandong Dai Bobin Mi Yingze Zhang Guohui Liu Department of Orthopedics Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Hubei Province Key Laboratory of Oral and Maxillofacial Development and Regeneration Wuhan 430022China Department of Clinical Laboratory Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430022P.R.China Division of Plastic surgery Brigham and Women’s HospitalHarvard Medical SchoolBostonMA 02152USA Department of Plastic surgery and Hand surgery Klinikum Rechts der IsarTechnical University of MunichMunichGermany Medical Center of Trauma and War Injuries Daping HospitalArmy Medical UniversityChonqing 400042China Department of Plastic surgery Campus CharitéMitte|Campus Virchow-KlinikumCharité-Universitätsmedizin Berlincorporate member of Freie Universität BerlinHumboldt-Universität zu Berlin and Berlin Institute of HealthBerlinGermany Berlin Institute of Health Charité-Universitätsmedizin BerlinBerlinGermany Department of Plastic AestheticHand and Reconstructive SurgeryHannover Medical SchoolHannoverGermany Department of Hand Plastic and Reconstructive SurgeryMicrosurgeryBurn CenterBG Trauma Center LudwigshafenUniversity of HeidelbergLudwig-Guttmann-Strasse 1367071 Ludwigshafen/RhineGermany Pingshan District People’s Hospital of Shenzhen Pingshan General Hospital of Southern Medical UniversityShenzhenGuangdong 518118China Department of Orthopaedic surgery The Third Hospital of Hebei Medical UniversityNO.139 Ziqiang RoadShijiazhuang 050051China

The clinical role and underlying mechanisms of valproic acid(VPA)on bone homeostasis remain ***,we confirmed that VPA treatment was associated with decreased bone mass and bone mineral density(BMD)in both patients and *** effect was attributed to VPA-induced elevation in osteoclast formation and *** RNA-sequencing,we observed a significant rise in precursor miR-6359 expression in VPA-treated osteoclast precursors in vitro,and further,a marked upregulation of mature miR-6359(miR-6359)in vivo was demonstrated using quantitative real-time PCR(qRT-PCR)and miR-6359 fluorescent in situ hybridization(miR-6359-FISH).Specifically,the miR-6359 was predominantly increased in osteoclast precursors and macrophages but not in neutrophils,T lymphocytes,monocytes and bone marrow-derived mesenchymal stem cells(BMSCs)following VPA stimulation,which influenced osteoclast differentiation and bone-resorptive ***,VPA-induced miR-6359 enrichment in osteoclast precursors enhanced reactive oxygen species(ROS)production by silencing the SIRT3 protein expression,followed by activation of the MAPK signaling pathway,which enhanced osteoclast formation and activity,thereby accelerating bone ***,there are no medications that can effectively treat VPA-induced bone ***,we constructed engineered small extracellular vesicles(E-sEVs)targeting osteoclast precursors in bone and naturally carrying anti-miR-6359 by introducing of EXOmotif(CGGGAGC)in the 3’-end of the anti-miR-6359 *** confirmed that the E-sEVs exhibited decent bone/osteoclast precursor targeting and exerted protective therapeutic effects on VPA-induced bone loss,but not on ovariectomy(OVX)and glucocorticoid-induced osteoporotic models,deepening our understanding of the underlying mechanism and treatment strategies for VPA-induced bone loss.

关键词： miR protective stimulation

Lateral circumflex femoral artery perforator flap for the reconstruction of head soft tissue defects:Cross-region venous anastomosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Plastic and reconstructive surgery 2024年第3期6卷 111-115页

作者： Gongxue Zhang Wenhu Jin Ziyang Zhang Lei Shi Rui Yang Dali Wang Department of burn and Plastic surgery Affiliated Hospital of Zunyi Medical UniversityZunyi563000GuizhouChina Collaborative Innovation Center of Tissue Damage Repair and Regeneration Medicine Zunyi Medical UniversityZunyi563000GuizhouChina

Background:Owing to its unique characteristics,the lateral circumflex femoral artery perforator(LCFAP)flap is often preferred for repairing head wounds with exposed ***,given the vascular distribution in the head,particularly the veins,can lead to postoperative complications such as venous congestion of the *** rates of vascular exploration and necrosis in these flaps are significantly higher than in other body ***,it is crucial to identify a safe and effective method for venous anastomosis of free flaps in the head ***:This retrospective case series study included 10 patients with large head soft tissue defects treated at the burn and Plastic surgery Department of the Affiliated Hospital of Zunyi Medical University from January 2020 to December *** head defects were reconstructed using LCFAP flaps,with flap veins anastomosed to the external jugular vein in the neck,either directly or via a bridging ***:Among the 10 adult patients with massive head wound defects,7(70%)were *** patients’mean age was 53.0 years(48–59 years).The wound defects were caused by trauma in 6(60%)patients and by tumors in 4(40%)***,no significant complications occurred,and all LCFAP flap survived without ***:The descending branch of the LCFAP flap effectively repairs massive head wound *** venous anastomosis method for this flap is associated with a low incidence of venous complications and a high patency rate,making it a clinically valuable reference.

关键词： Descending branch of lateral External jugular vein Wound repair Perforator flap

Influence of immobilization and sensory re-education on the sensory recovery after reconstruction of digital nerves with direct suture or muscle-in-vein conduits

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2016年第2期11卷 338-344页

作者： Theodora Manoli Jennifer Lynn Schiefer Lukas Schulz Thomas Fuchsberger Hans-Eberhard Schaller Department of Hand Plastic and Reconstructive Surgery Burn Unit BG Trauma Center University of Tuebingen

The influence of duration of immobilization and postoperative sensory re-education on the final outcome after reconstruction of digital nerves with direct suture or muscle-in-vein conduits was investigated. The final sensory outcome of 35 patients with 41 digital nerve injuries, who either underwent a direct suture（DS） or a nerve reconstruction with muscle-in-vein conduits（MVC）, was assessed the earliest 12 months postoperatively using static and moving two-point discrimination as well as Semmes-Weinstein monofilaments. There was no significant difference in sensory recovery in cases with an immobilization of 3–7 days versus 10 days in the DS or MVC group. Moreover, no statistically significant difference in sensory recovery was found in cases receiving postoperative sensory re-education versus those not receiving in the DS or MVC group. An early mobilization does not seem to have a negative impact on the final outcome after digital nerve reconstruction. The effect of sensory re-education after digital nerve reconstruction should be reconsidered.

关键词： nerve regeneration peripheral nerve digital nerve sensory re-education immobilization digital direct suture muscle-in-vein conduits

Comparison of short- with long-term regeneration results after digital nerve reconstruction with musclein-vein conduits

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2015年第10期10卷 1674-1677页

作者： Jennifer Lynn Schiefer Lukas Schulz Rebekka Rath Stéphane Stahl Hans-Eberhard Schaller Theodora Manoli Department of Hand Plastic and Reconstructive Surgery with Burn Center BG Trauma Center University of Tuebingen

Muscle-in-vein conduits are used alternatively to nerve grafts for bridging nerve defects. The purpose of this study was to examine short- and long-term regeneration results after digital nerve reconstruction with muscle-in-vein conduits. Static and moving two-point discriminations and Semmes-Weinstein Monofilaments were used to evaluate sensory recovery 6–12 months and 14–35 months after repair of digital nerves with muscle-in-vein in 7 cases. Both follow-ups were performed after clinical signs of progressing regeneration disappeared. In 4 of 7 cases, a further recovery of both two-point discriminations and in another case of only the static two-point discrimination of 1–3 mm could be found between the short-term and long-term follow-up examination. Moreover, a late recovery of both two-point discriminations was demonstrated in another case. Four of 7 cases showed a sensory improvement by one Semmes-Weinstein Monofilaments. This pilot study suggests that sensory recovery still takes place even when clinical signs of progressing regeneration disappear.

关键词： peripheral nerve regeneration muscle-in-vein conduits digital nerves sensory recovery Semmes-Weinstein two-point discrimination outcome short-term long-term

Promoting axonal regeneration following nerve surgery： a perspective on ultrasound treatment for nerve injuries

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2018年第9期13卷 1530-1533页

作者： Konstantin D. Bergmeister Simeon C. Daeschler Patrick Rhodius Philipp Schoenle Arne Bocker Ulrich Kneser Leila Harhaus Department of Hand Plastic and Reconstructive Surgery Burn Center Department of Plastic and Hand Surgery University of Heidelberg BG Trauma Hospital Ludwigshafen Ludwigshafen Germany

Nerve injury is often associated with limited axonal regeneration and thus leads to delayed or incomplete axonal *** a consequence of slow nerve regeneration,target muscle function is often insufficient and leads to a lifelong ***,the diagnosis of nerve injuries has been improved and likewise surgical reconstruction has undergone significant ***,the problem of slow nerve regeneration has not been *** a recent meta-analysis,we have shown that the application of low-intensity ultrasound promotes nerve regeneration experimentally and thereby can improve functional *** we want to demonstrate the experimental effect of low intensity ultrasound on nerve regeneration,the current state of investigations and its possible future clinical applications.

关键词： peripheral nerve injuries nerve regeneration reinnervation experimental studies low-intensityultrasound adjunct treatment nerve reconstruction nerve surgery axonal injury

Fibroadhesive scarring of grafted collagen scaffolds interferes with implant–host neural tissue integration and bridging in experimental spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Regenerative Biomaterials 2019年第2期6卷 75-87页

作者： Haktan Altinova Sebastian Hammes Moniek Palm Jose Gerardo-Nava Pascal Achenbach Ronald Deumens Emmanuel Hermans Tobias Fuhrmann Arne Boecker Sabien Geraldine Antonia van Neerven Ahmet Bozkurt Joachim Weis Gary Anthony Brook Department of Neurosurgery RWTH Aachen University HospitalAachenGermany Institute of Neuropathology RWTH Aachen University HospitalAachenGermany Police Headquarters Berlin Medical CommissionBerlinGermany Institute of Neuroscience Universite Catholique de LouvainBrusselsBelgium Donnelly centre for Cellular&Biomolecular Research University of TorontoTorontoCanada Department of Hand- Plastic and Reconstructive SurgeryBurn Centre Trauma CentreBG Trauma Centre LudwigshafenUniversity of HeidelbergLudwigshafenGermany Department of Plastic Reconstructive and Hand SurgeryBurn CentreRWTH Aachen University HospitalAachenGermany Department of Plastic AestheticHand and Burn SurgeryHelios University Hospital WuppertalUniversity Witten/HerdeckeWuppertalGermany

Severe traumatic spinal cord injury(SCI)results in a devastating and permanent loss of function,and is currently an incurable *** is generally accepted that future intervention strategies will require combinational approaches,including bioengineered scaffolds,to support axon growth across tissue scarring and cystic ***,we demonstrated that implantation of a microporous type-I collagen scaffold into an experimental model of SCI was capable of supporting functional recovery in the absence of extensive implant–host neural tissue ***,we demonstrate the reactive host cellular responses that may be detrimental to neural tissue integration after implantation of collagen scaffolds into unilateral resection injuries of the adult rat spinal *** demonstrated scattered fibroblast-like cell infiltration throughout the scaffolds as well as the presence of variable layers of densely packed cells,the fine processes of which extended along the graft–host *** reactive astroglial or regenerating axonal profiles could be seen traversing this *** encapsulation-type behaviour around bioengineered scaffolds impedes the integration of host neural tissues and reduces the intended bridging role of the *** of the cellular and molecular mechanisms underpinning this behaviour will be pivotal in the future design of collagen-based bridging scaffolds intended for regenerative medicine.

关键词： spinal cord injury CNS-scarring type-I collagen scaffold astrogliosis fibrosis encapsulation

Substance use and inhalation injury in adult burn patients:retrospective study of the impact on outcomes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

burns & Trauma 2019年第1期7卷 132-138页

作者： Kevin M.Klifto Luis Quiroga C.Scott Hultman Department of Plastic and reconstructive surgery Johns Hopkins Burn CenterThe Johns Hopkins Hospital4940 Eastern AvenueBaltimore 21224USA

Background:Substance use,alcohol use,and smoking use have all been associated with burn *** studies have investigated associations with substances,alcohol,smoking,inhalational only burns,and patient *** purpose of the study was to identify risk factors for pulmonary failure in patients suffering inhalation injury,focusing on the impact of substance,alcohol,and cigarette ***:This is a single-center retrospective analysis of 115 patients admitted to the Johns Hopkins Bayview burn Center with inhalational injury from January 1,2010,through September 30,*** were excluded if they were under the age of 18 years or had burn involvement of the skin>5%.Primary outcome variables measured were if patients were intubated,length of total time intubated,substance use,alcohol use,and smoking *** outcome variables measured were types of substances used(amphetamines,barbiturates,benzodiazepines,cannabinoids,cocaine,methadone,codeine/morphine),total number of substances used,intensive care unit(ICU)length of stay(LOS),hospital LOS,secondary complications,and patient *** was performed with Fisher’s exact test and the Mann-Whitney U test.A sub-group analysis for each substance,alcohol,smoking,and control subgroup was compared to its respective sub-group without substance,alcohol,smoking,and control within the no intubation and intubation group.A sub-group analysis of substance use,alcohol use,smoking use,and control was further analyzed with binomial logistic regression within the intubation ***:Following inhalation injury,50/115(43%)patients required ***-two of the 50(84%)patients intubated had substance use(p<0.001).Thirty-one of the 50(62%)patients intubated had history of smoking(p=0.038).Among the specific substances used,26/50(52%)patients intubated were using benzodiazepines(p<0.001)and 7/50(14%)patients were using cocaine(p=0.022).The lengths of intubation,ICU LOS,and hospital LOS with no substanc

关键词： Intubation Smoking burn Risk factors Cocaine Benzodiazepines Morphine Inhalation