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The two most prominent mycobacterial diseases in animals include bovine tuberculosis, caused by Mycobacterium bovis and Johne’s disease, caused by Mycobacterium avium subspecies paratuberculosis. Erradication of both diseases has been hampered by a variety of factors. In many countries, the persistence of tuberculosis in cattle has been attributed to reservoirs of M. bovis in wildlife species. Brushtail possums, deer and badgers are notable examples of wildlife reservoirs for M. bovis. The difficulties in eliminating the wildlife reservoir for M. bovis further suggest the need for vaccination of farmed livestock. Vaccination of wildlife species has also been attempted with mixed results. Delivery of the vaccine to wildlife species appears to be a chief obstacle. Vaccination itself leads to complications for diagnostics. For example, when cattle are vaccinated with both BCG and a commercial Johne’s vaccine there is a biased toward the avian tuberculin skin test reaction. Despite these issues, BCG seems to be the clear standard for vaccination against M. bovis, yet many laboratories are investigating ways to improve on BCG. For Johne’s disease, the available commercial vaccines consist of whole-cell preparations in one form or another. But with the ability to generate directed knockouts of specific genes, a number of defined mutants have been constructed in a few laboratories. These should be tested and directly compared with each other and alongside commercial vaccine formulations to determine not only which vaccine is most protective, but which animal model is best for predicting protection in the target host. To this end, there has been a nation-wide, multi-institutional effort to test the best live, attenuated vaccine against Johne's disease in cattle, sheep and goats. This vaccine trial has spanned six years and was conducted in three phases. The first phase examined attenuation in bovine macrophages, the second phase was colonization of spleen and liver in mice and the third phase was protection from bacterial challenge in goats. Many new ideas and retrospective approaches have emerged from this unprecedented effort. These aspects will be captured in this Research Topic. In this Research Topic, we will seek articles on these above topics, but other issues surrounding vaccination of animals against mycobacteria will also be explored. These include immune parameters, correlates of protection, adjuvants and other vaccine formulations, etc.

Veterinary vaccines. --- Bacterial vaccines. --- Tuberculosis in cattle --- Bacterial Vaccines --- Prevention. --- immunology. --- goat trial --- correlates of protection --- Paratuberculosis --- Johne's disease --- Attenuated mutant --- Vaccine

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The worldwide emergence of antimicrobial-resistant bacteria, specially those resistant to last-resource antibiotics, is now a common problem being defined as one of three priorities for the safeguarding of One Health by the Tripartite Alliance, which includes the World Health Organization (WHO), the Food and Agriculture Organization (FAO) and the Office International des Epizooties (OIE). Bacteria resistance profiles, together with the expression of specific virulence markers, have a major influence on the outcomes of infectious diseases. These bacterial traits are interconnected, since not only the presence of antibiotics may influence bacterial virulence gene expression and consequently infection pathogenesis, but some virulence factors may also contribute to an increased bacterial resistance ability, as observed in biofilm-producing strains. The surveillance of important resistant and virulent clones and associated mobile genetic elements is essential for decision making in terms of mitigation measures to be applied for the prevention of such infections in both human and veterinary medicine. However, the role of natural environments as important components of the dissemination cycle of these strains has not been consider until recently. This Special Issue aims to publish manuscripts that contribute to the understanding of the impact of bacterial antimicrobial resistance and virulence in the three areas of the One Health triad–i.e., animal, human and environmental health.

MRSA --- EMRSA-15 --- MLSB --- bacteremia --- bloodstream infections --- antibiotic resistance --- aquatic contamination --- probabilistic sampling --- San Francisco Estuary --- coast --- Pseudomonas --- Shewanella algae --- Vibrio parahaemolyticus --- biocide --- Listeria monocytogenes --- biofilm --- planktonic culture --- pulsed-field gel electrophoresis --- Escherichia coli --- fosfomycin --- nitrofurantoin --- antimicrobial resistance --- antibiotic susceptibility --- WGS --- phylogenetic analysis --- DNA mismatch repair system --- Salmonella Choleraesuis --- Iberian pig --- wild boar --- phylogenetic relationship --- plasmid replicon typing --- colistin --- carcass --- cfr gene --- fexA gene --- linezolid --- mutation --- pig --- public health --- S. aureus --- avian colibacillosis --- salmonellosis --- MDR --- tetA --- nisin --- mutant prevention concentration --- mutant selection window --- antimicrobial susceptibility testing --- horizontal gene transfer --- Salmonella --- reptiles --- isolation --- biofilms --- chlorhexidine gluconate --- wounds --- Gram-negative bacteria --- colonization --- infection --- clonal lineages --- resistance genes --- virulence factors --- Staphylococcus aureus --- skin and soft-tissue infections --- plasmids --- Panton–Valentine leucocidin

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The Special Issue “Juvenile Onset Huntington’s Disease” highlights the growing interest in understanding the unique aspects of this ultra-rare disorder. After decades of research, gene therapy trials are underway for Adult Onset Huntington’s Disease (AOHD). However, patients with Juvenile Onset Huntington’s Disease (JOHD) are often excluded from these efforts, leaving many questions regarding its phenomenology. The current issue includes seven articles spanning work on the difficult emotional experiences of parents of children with JOHD; a review of the clinical manifestations of JOHD; behavioral issues in JOHD; CAG repeat and age of motor onset; autonomic nervous system dysfunction; and abnormality in MRI metabolic markers. Finally, a review of the therapeutic advances is included, highlighting future possibilities of clinical trials in JOHD subjects. The HD community—patients, family members at-risk for HD, caregivers, health-care professionals and scientists—is keen on expanding our understanding of JOHD. In the flurry of research on AOHD, those with JOHD were seemingly ‘left behind.’ The study of patients who are afflicted early in life with HD has become imperative, with this Special Issue representing just the beginning of the required effort to address this urgent need.

Huntington’s disease --- CAG repeat --- mutant huntingtin (mHTT) --- therapeutics --- neurodegeneration --- juvenile Huntington’s disease --- pediatric Huntington’s disease --- early-onset Huntington’s disease --- personal experiences --- caregivers --- case series --- juvenile-onset Huntington’s disease --- T1-Rho --- neuroimaging --- behavioral regulation --- executive function --- trinucleotide repeat disorder --- CAG --- motor onset --- juvenile-onset Huntington’s Disease --- autonomic --- n/a --- Huntington's disease --- juvenile Huntington's disease --- pediatric Huntington's disease --- early-onset Huntington's disease --- juvenile-onset Huntington's disease --- juvenile-onset Huntington's Disease

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The mechanistic/mammalian target of rapamycin (mTOR), a serine/threonine kinase, is a central regulator for human physiological activity. Deregulated mTOR signaling is implicated in a variety of disorders, such as cancer, obesity, diabetes, and neurodegenerative diseases. The papers published in this Special Issue summarize the current understanding of the mTOR pathway and its role in the regulation of tissue regeneration, regulatory T cell differentiation and function, and different types of cancer including hematologic malignancies, skin, prostate, breast, and head and neck cancer. The findings highlight that targeting mTOR pathway is a promising strategy to fight against certain human diseases.

mTOR --- histone deacetylase --- prostate cancer --- integrins --- adhesion --- invasion --- cell metabolism --- T cells --- Foxp3 --- Acute Lymphoblastic leukemia --- targeted therapy --- metabolism --- cell signalling --- mTOR signalling --- head and neck cancer --- mutant genes --- biomarkers --- targeted therapies --- clinical trials --- cancers --- inhibitors --- photodynamic therapy --- PI3K --- Akt --- skin cancers --- phytochemicals --- melanoma --- basal cell carcinoma --- squamous cell carcinoma --- Merkel cell carcinoma --- TNBC --- eribulin --- PI3K/AKT/mTOR --- everolimus --- combination --- synergy --- mTOR signaling --- tissue regeneration --- neuron --- muscle --- liver --- intestine --- hematologic malignancies --- regulatory T cells --- tumor

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Polyamines are small organic compounds found in all living organisms. In recent years, there have been many exciting advances in our understanding of plant polyamines, such as the determination of the biosynthetic and catabolic pathways of plant polyamines and the identification of the roles that plant polyamines play in cellular processes. This Special Issue contains six original research papers and three review articles, providing valuable insights and information for future polyamine-related research.

polyamine oxidase --- norspermidine --- thermospermine --- Selaginella lepidophylla --- Arabidopsis thaliana mutant --- polyamines --- spermidine --- nonsense-mediated decay --- no-go decay --- non-stop decay --- quality control --- translation --- copper amine oxidases --- H2O2 --- ROS --- ABA --- stomatal closure --- back conversion pathway --- polyamine catabolism --- stress response --- terminal catabolism pathway --- Ranunculus biternatus --- Ranunculus pseudotrullifolius --- Ranunculus moseleyi --- secondary metabolite variation --- amines --- quercetins --- natural populations --- environment --- redundancy --- sub-Antarctic plants --- Arabidopsis --- phloem --- rice --- spermine --- xylem --- nitrogen metabolism --- abiotic and biotic stress --- hydrogen peroxide --- antioxidant machinery --- heat shock proteins --- heat stress --- polyamine oxidases --- PA acetylation --- PA oxidation --- PA back-conversion --- putrescine --- tomato --- spermidine synthase --- fruit shape --- cell division --- cell expansion --- copper amine oxidase