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https://www.readbyqxmd.com/read/28329707/dendritic-cells-display-subset-and-tissue-specific-maturation-dynamics-over-human-life
#1
Tomer Granot, Takashi Senda, Dustin J Carpenter, Nobuhide Matsuoka, Joshua Weiner, Claire L Gordon, Michelle Miron, Brahma V Kumar, Adam Griesemer, Siu-Hong Ho, Harvey Lerner, Joseph J C Thome, Thomas Connors, Boris Reizis, Donna L Farber
Maturation and migration to lymph nodes (LNs) constitutes a central paradigm in conventional dendritic cell (cDC) biology but remains poorly defined in humans. Using our organ donor tissue resource, we analyzed cDC subset distribution, maturation, and migration in mucosal tissues (lungs, intestines), associated lymph nodes (LNs), and other lymphoid sites from 78 individuals ranging from less than 1 year to 93 years of age. The distribution of cDC1 (CD141(hi)CD13(hi)) and cDC2 (Sirp-α(+)CD1c(+)) subsets was a function of tissue site and was conserved between donors...
March 21, 2017: Immunity
https://www.readbyqxmd.com/read/28329649/human-papillomavirus-infection-and-squamous-cell-carcinoma-in-organ-transplant-recipients
#2
Jan Nico Bouwes Bavinck
Organ transplant recipients (OTR) have an increased risk of developing squamous cell carcinomas (SCC). SCC are usually associated with multiple warts and premalignant keratoses. This cohort study investigated the predictive effect of infection with beta papillomaviruses (betaPV) with the later development of cutaneous SCC.In an earlier prospective and case-control study, eyebrow hairs and sera of 743 OTR transplanted before 2003 were collected. BetaPV DNA was determined in eyebrow hairs and betaPV antibodies in sera...
September 15, 2016: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329410/long-term-outcome-after-a-treosulfan-based-conditioning-regimen-for-patients-with-acute-myeloid-leukemia-a-report-from-the-acute-leukemia-working-party-of-the-european-society-for-blood-and-marrow-transplantation
#3
Arnon Nagler, Myriam Labopin, Dietrich Beelen, Fabio Ciceri, Liisa Volin, Avichai Shimoni, Roberto Foá, Noel Milpied, Jacopo Peccatori, Emmanuelle Polge, Audrey Mailhol, Mohamad Mohty, Bipin N Savani
BACKGROUND: Allogeneic hematopoietic cell transplantation (HCT) is a curative therapy for patients with acute myeloid leukemia (AML). However, post-HCT relapse and regimen-related toxicity remain significant barriers to long-term survival. In recent years, new conditioning regimens have been explored to improve transplantation outcomes in patients with AML. Treosulfan combines a potent immunosuppressive and antileukemic effect with a low toxicity profile. METHODS: To investigate the role of treosulfan-based conditioning, the European Society for Blood and Marrow Transplantation Acute Leukemia Working Party performed a registry analysis of 520 adult patients with AML who received treosulfan-based conditioning and underwent HCT between 2000 and 2012, including 225 patients in first complete remission, 107 in second or later complete remission, and 188 with active/advanced disease 188 (88 with primary refractory disease)...
March 22, 2017: Cancer
https://www.readbyqxmd.com/read/28329393/virological-outcomes-of-second-line-protease-inhibitor-based-treatment-for-human-immunodeficiency-virus-type-1-in-a-high-prevalence-rural-south-african-setting-a-competing-risks-prospective-cohort-analysis
#4
Dami Collier, Collins Iwuji, Anne Derache, Tulio de Oliveira, Nonhlanhla Okesola, Alexandra Calmy, Francois Dabis, Deenan Pillay, Ravindra K Gupta
Background.: Second-line antiretroviral therapy (ART) based on ritonavir-boosted protease inhibitors (bPIs) represents the only available option after first-line failure for the majority of individuals living with human immunodeficiency virus (HIV) worldwide. Maximizing their effectiveness is imperative. Methods.: This cohort study was nested within the French National Agency for AIDS and Viral Hepatitis Research (ANRS) 12249 Treatment as Prevention (TasP) cluster-randomized trial in rural KwaZulu-Natal, South Africa...
March 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329314/sirt1-polymorphisms-and-serum-induced-sirt1-protein-expression-in-aging-and-frailty-the-champ-study
#5
Shajjia Razi, Victoria C Cogger, Marina Kennerson, Vicky L Benson, Aisling C McMahon, Fiona M Blyth, David J Handelsman, Markus J Seibel, Vasant Hirani, Vasikaran Naganathan, Louise Waite, Rafael de Cabo, Robert G Cumming, David G Le Couteur
The nutrient sensing protein, SIRT1 influences aging and nutritional interventions such as caloric restriction in animals, however, the role of SIRT1 in human aging remains unclear. Here, the role of SIRT1 single-nucleotide polymorphisms (SNPs) and serum-induced SIRT1 protein expression (a novel assay that detects circulating factors that influence SIRT1 expression in vitro) were studied in the Concord Health and Ageing in Men Project (CHAMP), a prospective cohort of community dwelling men aged 70 years and older...
March 14, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329258/a-new-frailty-score-for-experimental-animals-based-on-the-clinical-phenotype-inactivity-as-a-model-of-frailty
#6
Mari Carmen Gomez-Cabrera, Rebeca Garcia-Valles, Leocadio Rodriguez-Mañas, Francisco Jose Garcia-Garcia, Gloria Olaso-Gonzalez, Andrea Salvador-Pascual, Francisco Jose Tarazona-Santabalbina, Jose Viña
The development of animal models to study human frailty is important to test interventions to be translated to the clinical practice. The aim of this work was to develop a score for frailty in experimental animals based in the human frailty phenotype. We also tested the effect of physical inactivity in the development of frailty as determined by our score. Male C57Bl/6J mice, individually caged, were randomly assigned to one of two groups: sedentary (inactive) or spontaneous wheel-runners. We compared the sedentary versus the active lifestyle in terms of frailty by evaluating the clinical criteria used in humans: unintentional weight loss; poor endurance (running time); slowness (running speed); weakness (grip strength), and low activity level (motor coordination) at five different ages: 17, 20, 23, 26 and 28 months of age...
January 19, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329224/a-clinically-relevant-frailty-index-for-aging-rats
#7
Marshall G Miller, Nopporn Thangthaeng, Barbara Shukitt-Hale
Frailty is a clinical syndrome that is increasingly prevalent during aging. Frailty involves the confluence of reduced strength, speed, physical activity, and endurance and is associated with adverse health outcomes. The present study adapts existing clinical and preclinical indices of frailty to the Fischer (F344) rat. Male F344 rats (n = 133; 17 mo) completed a battery of behavioral tasks, including forelimb wire suspension (strength), rotarod (speed), open field (physical activity), and inclined screen (endurance)...
January 21, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329212/clinical-status-of-adolescents-with-perinatal-hiv-at-transfer-to-adult-care-in-the-uk-ireland
#8
Intira Jeannie Collins, Caroline Foster, Anna Tostevin, Pat Tookey, Andrew Riordan, David Dunn, D M Gibb, Ali Judd
Background.: Increasing numbers of children infected perinatally with human immunodeficiency virus (HIV) are surviving to adolescence and transitioning to adult care, yet there are scarce data on their clinical status at transfer. Methods.: We analyzed prospective cohort data from the UK/Ireland national Collaborative HIV Pediatric Study (CHIPS). Clinical status at last pediatric clinic visit prior to transfer was described. Factors associated with higher CD4 cell count and viral load (VL) suppression<400 c/mL among patients on antiretroviral therapy (ART) at transfer were assessed using linear and logistic regression, respectively...
March 9, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329165/four-genome-wide-association-studies-identify-new-extreme-longevity-variants
#9
Paola Sebastiani, Anastasia Gurinovich, Harold Bae, Stacy Andersen, Alberto Malovini, Gil Atzmon, Francesco Villa, Aldi T Kraja, Danny Ben-Avraham, Nir Barzilai, Annibale Puca, Thomas T Perls
The search for the genetic determinants of extreme human longevity has been challenged by the phenotype's rarity and its nonspecific definition by investigators. To address these issues, we established a consortium of four studies of extreme longevity that contributed 2,070 individuals who survived to the oldest one percentile of survival for the 1900 U.S. birth year cohort. We conducted various analyses to discover longevity-associated variants (LAV) and characterized those LAVs that differentiate survival to extreme age at death (eSAVs) from those LAVs that become more frequent in centenarians because of mortality selection (eg, survival to younger years)...
March 15, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329145/higher-prevalence-of-frailty-among-a-sample-of-hiv-infected-middle-aged-and-older-chinese-adults-is-associated-with-neurocognitive-impairment-and-depressive-symptoms
#10
Yingying Ding, Haijiang Lin, Xing Liu, Frank Y Wong, Yan V Sun, Vincent C Marconi, Na He
We investigated the prevalence and correlates of prefrailty/frailty, determined on the basis of the Fried criteria, in Chinese patients with and those without human immunodeficiency virus (HIV) infection. HIV-infected patients were more likely to be frail or prefrail than controls, and this association remained significant after adjustment for potential confounders (odds ratio, 3.79). After additional adjustment for neurocognitive impairment and depressive and insomnia symptoms, this association remained significant but attenuated (odds ratio, 2...
March 16, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329096/diffuse-white-matter-signal-abnormalities-on-magnetic-resonance-imaging-are-associated-with-human-immunodeficiency-virus-type-1-viral-escape-in-the-central-nervous-system-among-patients-with-neurological-symptoms
#11
Ruthiran Kugathasan, Dami A Collier, Lewis J Haddow, Kate El Bouzidi, Simon G Edwards, Jonathan D Cartledge, Robert F Miller, Ravindra K Gupta
Background.: Human immunodeficiency virus type 1 (HIV-1) can replicate independently in extravascular compartments such as the central nervous system, resulting in either cerebrospinal fluid (CSF) discordance (viral load [VL] in CSF 0.5 log10 copies HIV-1 RNA greater than plasma VL) or escape (detection of HIV VL >50 copies/mL in CSF in patients with suppressed plasma VL <50 copies/mL). Both discordance and escape may be associated with neurological symptoms. We explored risk factors for CSF discordance and escape in patients presenting with diverse neurological problems...
March 13, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329081/a-new-preclinical-paradigm-for-testing-anti-aging-therapeutics
#12
Warren Ladiges, Jessica M Snyder, Erby Wilkinson, Denise M Imai, Tim Snider, Xuan Ge, Marcia Ciol, Christina Pettan-Brewer, Smitha P S Pillai, John Morton, Ellen Quarles, Peter Rabinovitch, Laura Niedernhofer, Denny Liggitt
Testing drugs for anti-aging effects has historically been conducted in mouse life-span studies, but are costly and time consuming, and more importantly, difficult to recapitulate in humans. In addition, life-span studies in mice are not well suited to testing drug combinations that target multiple factors involved in aging. Additional paradigms for testing therapeutics aimed at slowing aging are needed. A new paradigm, designated as the Geropathology Grading Platform (GGP), is based on a standardized set of guidelines developed to detect the presence or absence of low-impact histopathological lesions and to determine the level of severity of high-impact lesions in organs from aged mice...
February 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28329069/giardiasis-and-subsequent-irritable-bowel-syndrome-a-longitudinal-cohort-study-using-health-insurance-data
#13
Jolene H Nakao, Sarah A Collier, Julia W Gargano
Background.: Giardia intestinalis is the most commonly reported human intestinal parasite in the United States. Increased incidence of chronic gastrointestinal complaints has been reported after some giardiasis outbreaks. We examined the relationship between giardiasis diagnosis and irritable bowel syndrome (IBS) diagnosis. Methods.: We used the 2006-2010 MarketScan commercial insurance database. Persons with at least 1 giardiasis diagnosis were individually matched on age group, sex, and enrollment length in months to 5 persons without a giardiasis diagnosis...
February 23, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329053/sofosbuvir-plus-ribavirin-without-interferon-for-treatment-of-acute-hepatitis-c-virus-infection-in-hiv-1-infected-individuals-swift-c
#14
Susanna Naggie, Kristen M Marks, Michael Hughes, Daniel S Fierer, Christine Macbrayne, Arthur Kim, Kimberly Hollabaugh, Jhoanna Roa, Bill Symonds, Diana M Brainard, John G McHutchison, Marion G Peters, Jennifer J Kiser, Raymond Chung
Background.: Historically, acute hepatitis C virus (HCV) infection was treated with shorter durations of interferon-containing therapies. In the era of direct-acting antivirals (DAAs), it is unclear whether the efficacy of treatment achieved in chronic infection can be maintained with abbreviated courses of therapy during the acute phase. Methods.: The sofosbuvir-containing regimens without interferon for treatment of acute HCV in HIV-1 infected individuals (SWIFT-C) is an open-label, 2-cohort clinical trial in which the first cohort assessed for the safety and efficacy of 12 weeks of sofosbuvir plus ribavirin for the treatment of acute HCV infection in participants with chronic human immunodeficiency virus type 1 (HIV-1) infection...
February 27, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28329042/longitudinal-cardiovascular-outcomes-of-sleep-disordered-breathing-in-children-a-meta-analysis-and-systematic-review
#15
Zarmina Ehsan, Stacey L Ishman, Thomas R Kimball, Nanhua Zhang, Yuanshu Zou, Raouf S Amin
Objectives: The presence of sleep disordered breathing (SDB) is known to impact long-term cardiovascular morbidity in adults; however, the long-term effects in children are poorly understood. We aimed to systematically review and synthesize studies published to date on the long-term effects of SDB in children. Study Design: Meta-analysis and systematic review using PubMed, CINAHL,Embase and Scopus (all indexed years). Methods: We searched for English-language articles containing original human data from prospective studies, with ≥7 participants, in children ≤18 years of age...
January 28, 2017: Sleep
https://www.readbyqxmd.com/read/28328962/the-blood-dna-virome-in-8-000-humans
#16
Ahmed Moustafa, Chao Xie, Ewen Kirkness, William Biggs, Emily Wong, Yaron Turpaz, Kenneth Bloom, Eric Delwart, Karen E Nelson, J Craig Venter, Amalio Telenti
The characterization of the blood virome is important for the safety of blood-derived transfusion products, and for the identification of emerging pathogens. We explored non-human sequence data from whole-genome sequencing of blood from 8,240 individuals, none of whom were ascertained for any infectious disease. Viral sequences were extracted from the pool of sequence reads that did not map to the human reference genome. Analyses sifted through close to 1 Petabyte of sequence data and performed 0.5 trillion similarity searches...
March 22, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28328944/respiratory-viruses-in-patients-with-influenza-like-illness-in-senegal-focus-on-human-respiratory-adenoviruses
#17
Mbayame Ndiaye Niang, Ndeye Sokhna Diop, Amary Fall, Davy E Kiori, Fatoumata Diene Sarr, Sara Sy, Déborah Goudiaby, Mamadou Aliou Barry, Malick Fall, Ndongo Dia
BACKGROUND: Human adenoviruses (HAdVs) are highly contagious pathogens that are associated with a wide spectrum of human illnesses involving the respiratory tract. In the present study, we investigate the epidemiologic and viral molecular features of HAdVs circulating in Senegal after 4 consecutive years of sentinel surveillance of influenza-like Illness cases. METHODOLOGY AND RESULTS: From January 2012 to December 2015 swabs were collected from consenting ILI outpatients...
2017: PloS One
https://www.readbyqxmd.com/read/28328705/novel-approach-to-treating-androgenetic-alopecia-in-females-with-photobiomodulation-low-level-laser-therapy
#18
Shelly Friedman, Patricia Schnoor
BACKGROUND: Photobiomodulation, also referred to as low-level laser therapy (LLLT), has been studied and used for (among other diseases) the promotion of hair regrowth. OBJECTIVE/MATERIALS AND METHODS/RESULTS: A clinical study was developed to define the physiologic effects that occur when the human hair follicle and surrounding tissue structures are exposed to laser light using a novel device that is fitted with an array of laser diode sources operating at 650 nm and placed inside a sports cap to promote discretion while in use...
March 21, 2017: Dermatologic Surgery: Official Publication for American Society for Dermatologic Surgery [et Al.]
https://www.readbyqxmd.com/read/28328655/vascularized-composite-allotransplantation-an-emerging-concept-for-burn-reconstruction
#19
Zhi Yang Ng, Alexandre G Lellouch, Tessa Drijkoningen, Irene A Chang, David H Sachs, Curtis L Cetrulo
Vascularized composite allotransplantation (VCA) has demonstrated utility in the reconstruction of extensive soft-tissue defects following severe burns. However, pre-VCA events such as multiple transfusions, previous transplantation and pregnancies, the use of skin allografts, and mechanical support devices may result in sensitization and ultimately exclude a burn patient, who may benefit most through VCA, from a hand or face transplant. The authors sought to identify the immunologic challenges involved. All reported VCA cases up to July 2016 were reviewed...
March 15, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28328619/evaluation-of-o6-methylguanine-dna-methyltransferase-as-a-predicting-factor-of-response-to-temozolomide-based-chemotherapy-in-well-differentiated-metastatic-pancreatic-neuroendocrine-tumors
#20
Paul Girot, Clotilde Dumars, Jean-François Mosnier, Léa Muzellec, Hélène Senellart, Fanny Foubert, François-Xavier Caroli-Bosc, Estelle Cauchin, Nicolas Regenet, Tamara Matysiak-Budnik, Yann Touchefeu
OBJECTIVE: Temozolomide (TMZ) is an alkylating agent frequently used in well-differentiated metastatic pancreatic neuroendocrine tumors (PNETs) with very variable responses. O-methylguanine-DNA methyltransferase (MGMT) is a DNA repair enzyme whose loss of expression has been suggested to be predictive of response to TMZ in various human tumors. We evaluated the predictive value of MGMT status, assessed by immunohistochemistry (IHC) and methylation-specific PCR (MS-PCR), in well-differentiated metastatic PNETs treated by a TMZ-based chemotherapy...
March 21, 2017: European Journal of Gastroenterology & Hepatology
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