Replicating Adenovirus-SIV Immunization of Rhesus Macaques Induces Mucosal Dendritic Cell Activation and Function Leading to Rectal Immune Responses

Replicating Adenovirus-SIV Immunization of Rhesus Macaques Induces Mucosal Dendritic Cell Activation and Function Leading to Rectal Immune Responses Eun-Ju Ko, Sabrina Helmold Hait, Gospel Enyindah-Asonye, Mohammad Arif Rahman, Tanya Hoang and Marjorie Robert-Guroff* Vaccine Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, United States Inducing strong mucosal immune responses by vaccination is important for providing protection against simian immunodeficiency virus (SIV). A replicating adenovirus type 5 host range mutant vector (Ad5hr) expressing SIV proteins induced mucosal immune responses in rectal tissue associated with delayed SIV acquisition in female rhesus macaques, but the initial mechanisms leading to the induced immunity have not been elucidated. As dendritic cells (DCs) are known to orchestrate both innate and adaptive effector immune cell responses, we investigated their role here. Rhesus macaques were immunized twice mucosally with a replicating Ad5hr expressing SIV Env, Gag, and Nef (Ad-SIV) or empty Ad5hr vector (Ad-Empty). DC subsets and their activation were examined in rectal tissue, blood, and LNs at 3 timepoints after each immunization. Plasmacytoid DCs, myeloid DCs, and Langerhans cells were significantly increased in the rectal mucosa, but only myeloid DCs were significantly increased in blood post-immunizations. All rectal DC subsets showed increased frequencies of cells expressing activation markers and cytokin...
Source: Frontiers in Immunology - Category: Allergy & Immunology Source Type: research

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In this study, we found that the PPL length of Korean SG isolates varied from 11 to 21 prolines and was longer than that of a live vaccine strain, SG 9R (9 prolines). According to growth competition in chickens, the growth of an SG isolate with a PPL length of 17 prolines exceeded that of an SG isolate with a PPL length of 15 prolines. We investigated the pseudogenes of the field isolates, SG 9R and reference strains in GenBank by resequencing and comparative genomics. The pseudogene profiles of the field isolates were notably different from those of the foreign SG strains, and they were subdivided into 7 pseudogene subgro...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
Publication date: Available online 24 May 2019Source: Veterinary MicrobiologyAuthor(s): Sante Roperto, Valeria Russo, Francesca De Falco, Alessandra Rosati, Cornel Catoi, Franco RopertoAbstractE5 protein, the major oncoprotein of the bovine Deltapapillomavirus genus, has been detected in 17 of the 19 urothelial cancers by molecular and morphological procedures. In 10 urothelial cancers, the oxygen sensitive subunit HIF-1α, which is upregulated by hypoxia, was overexpressed. Mitophagy, the selective autophagic removal of dysfunctional mitochondria, was upregulated in hypoxic neoplastic cells infected by BPVs which was...
Source: Veterinary Microbiology - Category: Veterinary Research Source Type: research
Publication date: Available online 25 May 2019Source: Preventive Veterinary MedicineAuthor(s): Ricardo Lopes, Amanda Brinch Kruse, Liza Rosenbaum Nielsen, Telmo Pina Nunes, Lis AlbanAbstractIn modern livestock farming, there is an increasing understanding that antimicrobial (AM) consumption must be kept low – preferably without compromising animal welfare or productivity. This requires an understanding of the relationship between AM use, productivity, biosecurity, vaccination and herd demographics. To obtain this, we undertook an Additive Bayesian Network analysis using data from 2014-15, covering 157 Danish sow herd...
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
Publication date: Available online 25 May 2019Source: Preventive Veterinary MedicineAuthor(s): Asseged Dibaba
Source: Preventive Veterinary Medicine - Category: Veterinary Research Source Type: research
Authors: Vigna L, Morelli F, Agnelli GM, Napolitano F, Ratto D, Occhinegro A, Di Iorio C, Savino E, Girometta C, Brandalise F, Rossi P Abstract Epidemiological data indicate that subjects affected by obesity have an increased risk of developing mood disorders. The relationship between obesity and mood disorders is bidirectional. We assessed whether a Hericium erinaceus treatment improved depression, anxiety, sleep, and binge eating disorders after 8 weeks of supplementation in subjects affected by overweight or obesity under a low calorie diet regimen. Looking for a possible clinical biomarker, we assessed the seru...
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Conclusion: Formal consensus was achieved for the first time on a core list of knowledge items on how exercises and physical activities might stimulate anticancer immunity. This core list might be considered at the time of developing training/educational interventions and/or continuing education for primary healthcare providers and CAM practitioners. Future studies are still needed to investigate if such consensual lists might improve congruence in cancer care continuum and improve survival rates and wellbeing of cancer patients and survivors. PMID: 31118968 [PubMed]
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Authors: Oei SL, Thronicke A, Schad F Abstract In early tumor development, cancer cells develop a plethora of strategies to escape surveillance from the adaptive and innate immune system. Cancer immunotherapies, in particular immune checkpoint inhibitors, are becoming a highly promising cancer therapeutic approach that has remarkable increased progress in combating various cancer types. Unfortunately, their mechanisms of action induce some complications, such as inflammatory reactions and immune-related adverse events. In the management of side effects during anticancer therapy, complementary and integrative therap...
Source: Evidence-based Complementary and Alternative Medicine - Category: Complementary Medicine Tags: Evid Based Complement Alternat Med Source Type: research
Publication date: Available online 25 May 2019Source: Biosensors and BioelectronicsAuthor(s): Shao Su, Qian Sun, Ling Wan, Xiaodan Gu, Dan Zhu, Yi Zhou, Jie Chao, Lianhui WangAbstractUltrasensitive detection of cancer biomarkers has shown great promise for precision medicine. Here, a triple signal amplification strategy was developed for analysis of carcinoembryonic antigen (CEA) by using MoS2-based nanocomposites. Gold nanoparticles-decorated molybdenum disulfide nanocomposite (MoS2-AuNPs) was used to construct the modified electrode and nanoprobe, which could efficiently amplify electrochemical signal due to its large su...
Source: Biosensors and Bioelectronics - Category: Biotechnology Source Type: research
Publication date: Available online 24 May 2019Source: Molecular Aspects of MedicineAuthor(s): Ester Saus, Susana Iraola-Guzmán, Jesse R. Willis, Anna Brunet-Vega, Toni GabaldónAbstractThe gastrointestinal tract harbors most of the microbiota associated with humans. In recent years, there has been a surge of interest in assessing the relationships between the gut microbiota and several gut alterations, including colorectal cancer. Changes in the gut microbiota in patients suffering colorectal cancer suggest a possible role of host-microbe interactions in the origin and development of this malignancy and, at th...
Source: Molecular Aspects of Medicine - Category: Molecular Biology Source Type: research
ConclusionThe need for continuous in-service training of nurses on HIV and AIDS is a key contributing factor to promoting knowledge, correcting a misconception, favourable attitude and improve compliance to universal precautions and other preventive practices such as uptake of PEP.
Source: International Journal of Africa Nursing Sciences - Category: African Health Source Type: research
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