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New anti-infective strategies for treatment of tularemia

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Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889193394 Year: Pages: 78 DOI: 10.3389/978-2-88919-339-4 Language: English
Publisher: Frontiers Media SA
Subject: Internal medicine --- Science (General)
Added to DOAB on : 2016-03-10 08:14:32
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Abstract

Francisella tularensis, the causative agent of tularemia, is a paradigm among human pathogens. This Gram-negative bacterium has an intracellular lifestyle, which probably reflects an adaptation to its natural animal and protozoa reservoirs. This is one of the most infectious agents in humans and animals; only a few bacteria are needed to induce a severe infection in both types of hosts. The clinical presentation and severity of human tularemia varies according to the portal of entry of bacteria, the bacterial inoculum, the virulence of the infecting strain, and the immune response of the host. Although most infections occur after direct inoculation of bacteria through the skin (through skin wounds or bites of arthropods), pneumonia due to inhalation of infected aerosols is the most feared of the clinical forms of the disease, particularly in the context of biological threat. Two subspecies are responsible for tularemia (subsp. tularensis and subsp. holarctica), and several clades have been described for each, which might be associated with changes in disease severity in humans. Tularemia is also more severe in people with an impaired immune response. No safe vaccine is currently available for prophylaxis of tularemia in humans. On the other hand, control of proliferation of F. tularensis in wildlife is not feasible. Thus, only the anti-infective agents are used for treatment and prophylaxis of human tularemia. The standard options include aminoglycosides (gentamicin), tetracyclines (eg, doxycycline) and fluoroquinolones (eg, ciprofloxacin). The selection of acquired resistance to these antibiotics in F. tularensis, especially in the context of a biological threat, may quickly limit the therapeutic options. New prophylactic and therapeutic alternatives must be developed rapidly. The present Research Topic focuses on potential new strategies for treatment of tularemia, including the development and evaluation of new compounds having proper antibacterial activity, reducing the virulence of F. tularensis or enhancing the immune host response.

Family Iridoviridae Molecular and Ecological Studies of a Family Infecting Invertebrates and Ectothermic Vertebrates

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ISBN: 9783039215164 9783039215171 Year: Pages: 234 DOI: 10.3390/books978-3-03921-517-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology
Added to DOAB on : 2019-12-09 11:49:15
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Ranaviruses and other viruses within the family Iridoviridae, infect a wide range of ecologically and commercially important ectothermic vertebrates, i.e., bony fish, amphibians, and reptiles, and invertebrates, including agricultural and medical pests and cultured shrimp and crayfish, and are responsible for considerable morbidity and mortality. Understanding the impact of these various agents on diverse host species requires the combined efforts of ecologists, veterinarians, pathologists, comparative immunologists and molecular virologists. Unfortunately, investigators involved in these studies often work in discipline-specific silos that preclude interaction with others whose insights and approaches are required to comprehensively address problems related to ranavirus/iridovirus disease. Our intent here is to breakdown these silos and provide a forum where diverse researchers with a common interest in ranavirus/iridovirus biology can profitably interact. As a colleague once quipped, “Three people make a genius.” We are hoping to do something along those lines by presenting a collection of research articles dealing with issues of anti-viral immunity, identification of a potentially novel viral genus exemplified by erythrocytic necrosis virus, viral inhibition of innate immunity, identification of novel hosts for lymphocystivirus and invertebrate iridoviruses, and modelling studies of ranavirus transmission. Collectively these and others will exemplify the breadth of ongoing studies focused on this virus family.

Keywords

amphibians --- histopathology --- immunohistochemistry --- Mexico --- outbreak --- ranavirus --- risk assessment --- Iridoviridae --- frog virus 3 --- FV3 --- ranavirus --- immunofluorescence --- intracellular localization --- iridovirus --- ranavirus --- epidemiology --- antibody --- ELISA --- virus isolation --- prevalence --- native-fish conservation --- biosecurity --- endemic disease --- Unconventional T cell --- nonclassical MHC --- antiviral immunity --- interferon --- DIV1 --- SHIV --- CQIV --- Macrobrachium rosenbergii --- Macrobrachium nipponense --- Procambarus clarkii --- white head --- susceptible species --- viral load --- erythrocytic necrosis virus (ENV) --- viral erythrocytic necrosis (VEN) --- Pacific salmon --- Pacific herring --- British Columbia --- SHIV --- DIV1 --- Decapodiridovirus --- Exopalaemon carinicauda --- susceptibility --- host --- ISDL --- amphibian --- Ranavirus --- frog virus 3 --- mathematical models --- Bayesian inference --- viral immune evasion --- immunomodulators --- NF-?B --- Imd --- DNA virus --- host-pathogen interactions --- IIV-6 --- Rana grylio virus (RGV) --- iridovirus core proteins --- protein interaction --- aquatic animals --- cross-species transmission --- yeast two-hybrid (Y2H) --- co-immunoprecipitation (Co-IP) --- megalocytivirus --- iridovirus --- European chub --- Lymphocystis disease virus --- Artemia spp. --- viral infection --- Sparus aurata --- viral transmission --- eDNA --- Ranavirus --- Common frog --- Rana temporaria --- early detection --- virus surveillance --- n/a --- transmission modelling --- susceptible-infected (SI) models --- emerging infection --- ranavirosis --- Iridoviridae --- disease dynamics --- ranavirus --- virus binding --- heparan sulfate --- Andrias davidianus ranavirus --- Rana grylio virus --- envelope protein --- lizard --- bearded dragon --- Pogona vitticeps --- cricket --- Gryllus bimaculatus

The Role of Pregnancy Nutrition in Maternal and Offspring Health

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ISBN: 9783039219964 9783039219971 Year: Pages: 320 DOI: 10.3390/books978-3-03921-997-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Biology --- Nutrition and Food Sciences
Added to DOAB on : 2020-01-07 09:08:26
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In pregnancy, maternal nutrition sustains and nourishes the developing child. Imbalances in either the direction of nutritional excess or deficiency can have adverse consequences for child health. In addition, more research now suggests that good pregnancy nutrition influences child health beyond pregnancy and delivery. This includes modifying the risk of child health outcomes as they enter childhood and adulthood through influences on placental development, hormonal pathways, and organ structure and function. Poor pregnancy nutrition may also compromise maternal health during pregnancy, which may have long-term consequences for women’s health. Understanding the biological and social mechanisms operating during pregnancy can help in the design of better clinical and public health interventions. This Special Issue on “The Role of Pregnancy Nutrition in Maternal and Offspring Health” includes etiological and mechanistic studies of pregnancy nutrition with short- and long-term maternal and child health outcomes, including original research, narrative reviews, and systematic reviews and meta-analyses. Together, this body of work provides important insights into the influence of dietary patterns, food groups, and nutrients on pregnancy outcomes, and long-term neurodevelopmental, respiratory, and metabolic health in the children. It also highlights nutritional consequences for specific groups of women, including those with pregnancy complications and eating disorders.

Keywords

Obesity --- chronic kidney disease --- foetal programming --- sirtuin --- choline --- Dlx3 --- placenta --- placental insufficiency --- inflammation --- angiogenesis --- apoptosis --- Iodine --- pregnancy --- birth weight --- Insufficiency --- SGA --- preterm Birth --- nutrition --- diet --- vitamin D --- birthweight --- birth length --- head circumference --- gestational age --- pregnancy outcomes --- vegetarian diets --- vegan diets --- plant-based diets --- nutrition --- pregnancy --- breastfeeding --- human milk --- micronutrients --- fetal development --- fatty fish --- essential fatty acids --- omega-3 --- pregnancy --- birth weight --- foetal growth --- preterm birth --- anorexia nervosa --- bulimia nervosa --- binge eating disorder --- diet --- eating behavior --- eating disorders --- nutrition --- pregnancy --- purging --- asthma --- fortification --- vitamin D --- social experiment --- pregnancy --- lactation --- weaning --- food-related IgG --- food clusters --- non-IgE-mediated food reactions --- maternal nutrition --- Mediterranean diet --- offspring health --- DHA --- gestational diabetes --- preeclampsia --- placental transport --- choline --- pregnancy --- infant nutrition --- brain health --- docosahexaenoic acid --- DHA --- eye function --- ghrelin --- hypothalamic inflammation --- microglia --- nutritional programing --- pregnancy nutrition --- neurodevelopmental disorders --- autism spectrum disorder --- attention deficit disorder with hyperactivity --- developmental origins of health and disease --- systematic review --- meta-analysis --- preterm birth --- preterm labor --- etiology --- nutrition --- DHA --- probiotics --- dietary habits --- maternal nutrition --- gestational diabetes --- food frequency questionnaire --- dietary screening --- lifestyle intervention --- pregnancy --- dietary behaviour --- neonatal outcomes --- birth weight --- large for gestational age (LGA) --- small for gestational age (SGA) --- obesity prevention --- immunomodulators --- maternal nutrition --- pregnancy --- Rhodiola --- Echinacea --- Panax --- Camellia

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