Review
Cell Biology
Kelly C. S. Roballo, Jason P. Gigley, Tyler A. Smith, George D. Bittner, Jared S. Bushman
Summary: This review discusses the unique functional and immunological properties of live allogeneic peripheral nerves compared to other transplanted tissues. It highlights the effectiveness of live peripheral nerve allografts in promoting recovery after peripheral nerve injury and the potential interest of understanding their immunological peculiarities in the field of transplantation. The review addresses topics such as the utility of peripheral nerve allografts in bridging nerve defects, the host immune response to these grafts, and the potential mechanisms accounting for immunological differences.
NEURAL REGENERATION RESEARCH
(2022)
Review
Cell Biology
JuliAnne E. Allgood, George D. Bittner, Jared S. Bushman
Summary: This review discusses the branching anatomy of the peripheral nervous system, surgical management of peripheral nerve injuries with branched ablations, factors influencing regeneration through branched nerve structures, techniques and models of branched peripheral nerve injuries in animal models, and the need for outcome measures and studies to improve understanding of regeneration through ablated branched structures of the peripheral nervous system.
NEURAL REGENERATION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Estefania Contreras, Sara Traserra, Sara Bolivar, Joaquim Fores, Eduard Jose-Cunilleras, Ignacio Delgado-Martinez, Felix Garcia, Esther Udina, Xavier Navarro
Summary: This study used sheep as a model to investigate the repair of long-gap peripheral nerve injuries through autograft transplantation. Functional evaluation, electromyographic and ultrasound tests were performed. The results suggest that sheep nerve repair is a useful model for studying such injuries.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
Luke Juckett, Tiam Mana Saffari, Benjamin Ormseth, Jenna-Lynn Senger, Amy M. M. Moore
Summary: Peripheral nerve injuries (PNI) often result in lifelong disability with rare complete functional recovery. Intraoperative electrical stimulation (ES) is a promising surgical adjunct that can augment the intrinsic molecular pathways of nerve regeneration. Clinical trials have shown that ES can be an efficacious therapy to improve patient outcomes following PNIs.
Review
Cell Biology
Jingxin Zhang, Binjing Zhang, Jinglan Zhang, Weimin Lin, Shiwen Zhang
Summary: Magnesium as a suitable material for promoting peripheral nerve regeneration has both challenges and potentials, but there is currently limited research on this topic, requiring further exploration to address the shortcomings and challenges identified.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yangnan Hu, Zhuoyue Chen, Hongyang Wang, Jiahui Guo, Jiaying Cai, Xiaoyan Chen, Hao Wei, Jieyu Qi, Qiuju Wang, Huisheng Liu, Yuanjin Zhao, Renjie Chai
Summary: Inspired by the structures of peripheral nerves, researchers have developed a conductive topological scaffold for nerve repair using modified butterfly wings. The scaffold showed increased neurite length and guided cellular orientation, and successfully repaired nerve defects in rats.
Review
Biotechnology & Applied Microbiology
Xiaolan Li, Xiang Zhang, Ming Hao, Dongxu Wang, Ziping Jiang, Liqun Sun, Yongjian Gao, Ye Jin, Peng Lei, Yue Zhuo
Summary: This review summarizes the importance of collagen in peripheral nerve regeneration, focusing on its characteristics, role, and optimization methods. Collagen, as a biomaterial, plays a crucial role in peripheral nerve repair and can be further optimized by adjusting its structure and physical properties, as well as combining it with bioactive components.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Rui D. Alvites, Mariana V. Branquinho, Ana C. Sousa, Federica Zen, Monica Maurina, Stefania Raimondo, Carla Mendonca, Luis Atayde, Stefano Geuna, Artur S. P. Varejao, Ana C. Mauricio
Summary: This study established a sheep model for common peroneal nerve injuries, describing nerve anatomy, functional consequences, surgical protocol, and therapeutic options. Through morphological and stereological studies, optimal access methods and study periods were determined, providing foundational data for future research.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Engineering, Biomedical
Simon C. Kellaway, Victoria Roberton, Joshua N. Jones, Rabea Loczenski, James B. Phillips, Lisa J. White
Summary: Incorporating dECMh derived from bone, liver, and small intestinal tissues can promote neurite extension and axonal regeneration, providing an alternative to current collagen I hydrogel.
ACTA BIOMATERIALIA
(2023)
Review
Biochemistry & Molecular Biology
Gheorghita Isvoranu, Emilia Manole, Monica Neagu
Summary: The CatWalk system is an automated and reliable system for assessing gait abnormalities and motor coordination in animal models of spinal cord and peripheral nerve injuries. Recent studies using CatWalk have focused on injuries in the peripheral nerve, spinal cord, and brain, providing objective and quantifiable data through high-resolution videos. The system is able to evaluate footfall and gait changes, calculate various parameters, and suggest new therapies based on standardized methods for regeneration of peripheral nerve and spinal cord lesions.
Article
Chemistry, Applied
Sergey O. Solomevich, Carlo M. Oranges, Daniel F. Kalbermatten, Anna Schwendeman, Srinivas Madduri
Summary: Peripheral nerve repair is a serious problem in neurosurgery, with poor clinical outcomes and significant socioeconomic burden. Biodegradable polysaccharides show great potential for improving nerve regeneration. This review focuses on the promising therapeutic strategies involving different types of polysaccharides and their composites for promoting nerve regeneration, highlighting their applications in nerve guidance conduits, hydrogels, nanofibers, and films. The ease of therapeutic implementation, drug release properties, therapeutic outcomes, and future research directions are also discussed.
CARBOHYDRATE POLYMERS
(2023)
Review
Biotechnology & Applied Microbiology
Ane Escobar, Rui Luis Reis, Joaquim Miguel Oliveira
Summary: Peripheral nerve injuries are a common cause of disabilities, and treatment with long nerve gap autografts is currently considered the best method. However, due to limited availability and potential issues at the donor site, research is focusing on developing regenerative strategies using artificial nerve guidance conduits (NGCs). These NGCs can be optimized through various methods to enhance nerve regeneration, and recent advancements in using different types of nanoparticles to introduce growth factors to NGCs are discussed in depth.
Review
Medicine, General & Internal
Alessandro Crosio, Giulia Ronchi, Benedetta Elena Fornasari, Simonetta Odella, Stefania Raimondo, Pierluigi Tos
Summary: This review focuses on prevention of peripheral nerve scarring and highlights the importance of reliable animal models and standardized parameters for evaluating the efficacy of antiadhesion products. Currently, there are no standardized methods in experimental research for comparing results of different antiadhesion devices.
JOURNAL OF CLINICAL MEDICINE
(2021)
Review
Biochemistry & Molecular Biology
Trevor Poitras, Douglas W. Zochodne
Summary: Common mechanisms of peripheral axon regeneration are recruited following diverse forms of damage to peripheral nerve axons. Supporting peripheral axon regrowth could be achieved through direct axon support or manipulation of the inflammatory milieu. Understanding the molecular barriers to regrowth and exploiting the downstream signaling pathways that impact neuron growth are promising approaches for promoting adult peripheral axon regeneration. This review emphasizes intrinsic aspects of adult peripheral axon regeneration and highlights several molecular barriers to regrowth.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biotechnology & Applied Microbiology
Lorena R. Lizarraga-Valderrama, Giulia Ronchi, Rinat Nigmatullin, Federica Fregnan, Pooja Basnett, Alexandra Paxinou, Stefano Geuna, Ipsita Roy
Summary: The study demonstrated that PHA-NGCs are highly promising in promoting peripheral nerve regeneration, showing comparable outcomes to autografts in functional evaluation and nerve morphology.
BIOENGINEERING & TRANSLATIONAL MEDICINE
(2021)
Article
Polymer Science
Rachel Cordeiro, Rui D. D. Alvites, Ana C. C. Sousa, Bruna Lopes, Patricia Sousa, Ana C. C. Mauricio, Nuno Alves, Carla Moura
Summary: Osteoarthritis is a prevalent disease causing cartilage loss, and tissue engineering with different cellulose incorporated poly(epsilon-caprolactone) (PCL) scaffolds shows promise for its repair. The study manufactured and characterized PCL scaffolds with various percentages of commercial cellulose (microcrystalline and methyl cellulose) or cellulose from agro-industrial residues (corncob). The results indicate that cellulose incorporation promotes cellular adhesion/proliferation, and methyl cellulose scaffolds demonstrate compressive properties closer to native cartilaginous tissue.
Review
Microbiology
Vanessa Silva, Sara Araujo, Andreia Monteiro, Jose Eira, Jose Eduardo Pereira, Luis Maltez, Gilberto Igrejas, Teresa Semedo Lemsaddek, Patricia Poeta
Summary: Animal production involves the use of antimicrobial agents to promote growth and treat diseases, but it also leads to the emergence of antibiotic-resistant strains such as methicillin-resistant Staphylococcus aureus (MRSA). MRSA poses a significant threat to public health and animal welfare. Livestock-associated MRSA (LA-MRSA) was initially restricted to a specific clonal complex (CC398), but its diversity has increased over time, accompanied by multidrug resistance. This review summarizes the main clonal lineages of MRSA associated with different animals, including swine, cattle, rabbits, and poultry, and highlights the multidrug resistance patterns.
Article
Robotics
Artur Cordeiro, Joao Pedro Souza, Carlos M. Costa, Vitor Filipe, Luis F. Rocha, Manuel F. Silva
Summary: This paper presents a research on object segmentation in cluttered scenarios using Mask R-CNN for 2D object segmentation and 3D point-cloud segmentation. The experimental results demonstrate the efficiency and accuracy of the proposed approach, achieving an overall grasping success rate of 87.5%.
Article
Remote Sensing
Nathalie Guimaraes, Luis Padua, Joaquim J. Sousa, Albino Bento, Pedro Couto
Summary: In Portugal, almonds are important due to their nutritional properties. This study explores the classification of almond cultivars using remote-sensing data and machine learning classifiers. The results demonstrate the importance of feature selection in optimizing classifier performance.
INTERNATIONAL JOURNAL OF REMOTE SENSING
(2023)
Article
Agriculture, Dairy & Animal Science
Ines Leal Reis, Bruna Lopes, Patricia Sousa, Ana Catarina Sousa, Mariana Branquinho, Ana Rita Caseiro, Silvia Santos Pedrosa, Alexandra Rema, Claudia Oliveira, Beatriz Porto, Luis Atayde, Irina Amorim, Rui Alvites, Jorge Miguel Santos, Ana Colette Mauricio
Summary: This study developed a treatment method that promotes tissue regeneration by injecting equine synovial stem cells and autologous serum into the lesion site. After treatment, all horses underwent a physical rehabilitation program and were monitored with physical and ultrasonographic exams. The results were very promising, supporting the use of equine synovial stem cells and autologous serum in the treatment of tendonitis and desmitis.
Article
Microbiology
Telma de Sousa, Michel Hebraud, Olimpia Alves, Eliana Costa, Luis Maltez, Jose Eduardo Pereira, Angela Martins, Gilberto Igrejas, Patricia Poeta
Summary: A study conducted at the Medical Center of Tras-os-Montes and Alto Douro (CHTMAD) found that Pseudomonas aeruginosa strains causing urinary tract infections are resistant to multiple antibiotics and have high biofilm formation and motility capabilities, posing a serious public health problem.
Review
Infectious Diseases
Adriana Silva, Vanessa Silva, Jose Eduardo Pereira, Luis Maltez, Gilberto Igrejas, Patricia Valentao, Virgilio Falco, Patricia Poeta
Summary: Escherichia coli (E. coli) is an important pathogenic bacteria commonly found in livestock, serving as a carrier of drug-resistant genes between humans, animals, and the environment. The use of antimicrobials in food-producing animals, especially in the food chain, is a significant contributor to antimicrobial resistance (AMR) development and spread. This review focuses on the clonal lineages and resistance profiles of E. coli, including extended spectrum beta-lactamases (ESBL) producing E. coli, in various food-producing animals such as pigs, poultry, cattle, fish farming, and rabbits. The presence of ESBL-producing E. coli was found to be prevalent among farm animals, with high resistance rates to tetracycline and ampicillin observed in farms worldwide. There is an urgent need for a better understanding of the epidemiology of E. coli and ESBL-producing E. coli in livestock, as animal production plays a major role in the global antibiotic resistance problem, necessitating a One Health approach.
Review
Veterinary Sciences
Ana Ines Pereira, Pedro Franco-Goncalo, Pedro Leite, Alexandrine Ribeiro, Maria Sofia Alves-Pimenta, Bruno Colaco, Catia Loureiro, Lio Goncalves, Vitor Filipe, Mario Ginja
Summary: Artificial intelligence and machine learning have been increasingly used in the medical imaging field in the past few years. This article offers veterinary professionals an overview of their applications in imaging diagnosis and provides a review of existing literature.
VETERINARY SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
David Munoz-Rodriguez, Marwane Bourqqia-Ramzi, Maria Teresa Garcia-Esteban, Antonio Murciano-Cespedosa, Alejandro Vian, Juan Lombardo-Hernandez, Pablo Garcia-Perez, Francisco Conejero, Alvaro Mateos Gonzalez, Stefano Geuna, Celia Herrera-Rincon
Summary: Inter-cellular communication involve biochemical, biophysical, and bioelectrical signals, which can occur between cells from the same tissue or animal species, as well as between cells that are evolutionarily distant. This paper presents a method for assessing the bioelectrical state of two bacterial strains and monitoring their bioelectrical profile during growth, revealing functional links between membrane potential and population growth. The study also demonstrates that bacteria respond to neural signals by changing their membrane potential, highlighting the potential for studying the relationship between bacteria and the brain in the context of the gut microbiota-brain axis.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Editorial Material
Cell & Tissue Engineering
Rui Alvites, Bruna Lopes, Andre Coelho, Ana Colette Mauricio
REGENERATIVE MEDICINE
(2023)
Review
Cell & Tissue Engineering
Bruna Lopes, Andre Coelho, Rui Alvites, Ana Catarina Sousa, Patricia Sousa, Alicia Moreira, Luis Atayde, Antonio Salgado, Stefano Geuna, Ana Colette Mauricio
Summary: Animal models play a crucial role in peripheral nerve injury regeneration studies, but there is a lack of usage of large animal models. The application of large animal models needs to be expanded to improve translational medicine for clinical practice.
REGENERATIVE MEDICINE
(2023)
Article
Polymer Science
Yuki Shirosaki, Federica Fregnan, Luisa Muratori, Saki Yasutomi, Stefano Geuna, Stefania Raimondo
Summary: In this study, porous chitosan-GPTMS hybrids with different amounts of GPTMS were prepared. The structures of the degradation products with Si from the hybrids were analyzed using mass spectrometry, and their potential use in nerve repair devices was evaluated through biological assessments. The results showed that lower-molecular-weight degradation products with Si improved motor cell line differentiation and neurite outgrowth of dorsal root ganglion explants.
Review
Biochemistry & Molecular Biology
Patricia Sousa, Bruna Lopes, Ana Catarina Sousa, Alicia Moreira, Andre Coelho, Rui Alvites, Nuno Alves, Stefano Geuna, Ana Colette Mauricio
Summary: This article presents a systematic review of studies on the use of exosomes for wound healing over the past five years. The review shows that exosome-based treatments can improve wound healing by promoting angiogenesis, reepithelization, collagen deposition, and reducing scar formation. However, further research is needed due to the variability in cell sources, biomaterials, and administration routes.
Article
Biology
Rui Alvites, Bruna Lopes, Patricia Sousa, Ana Catarina Sousa, Andre Coelho, Alicia Moreira, Alexandra Rema, Luis Atayde, Carla Mendonca, Ana Lucia Luis, Ana Colette Mauricio
Summary: This study aims to evaluate peripheral nerve regeneration in sheep using ultrasound examination and establish normal values for dimensions and ultrasound appearance of healthy nerves, as well as for the cranial tibial muscle. The results obtained will contribute to the future exploration of new therapeutic options for nerve regeneration after common peroneal nerve injuries in sheep.
Proceedings Paper
Robotics
Daniel Queiros da Silva, Filipe Neves dos Santos, Vitor Filipe, Armando Jorge Sousa
Summary: To tackle wildfires and improve forest biomass management, cost effective and reliable mowing and pruning robots are required. However, the development of visual perception systems for forestry robotics needs to be researched and explored to achieve safe solutions. This paper presents a dataset and benchmark for the development of vision perception systems in forestry operations. The dataset consists of annotated images and enabled the training and evaluation of nine object detectors on different edge-computing hardware. The results showed that YOLOR performed the best as a trunk detector with high precision and inference speed, thus contributing to the advancement of robotic vision perception in forestry.
ROBOT2022: FIFTH IBERIAN ROBOTICS CONFERENCE: ADVANCES IN ROBOTICS, VOL 1
(2023)