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https://www.readbyqxmd.com/read/29679241/therapeutic-approaches-to-type-i-interferonopathies
#1
REVIEW
Marc Bienias, Normi Brück, Constanze Griep, Christine Wolf, Stefanie Kretschmer, Barbara Kind, Victoria Tüngler, Reinhard Berner, Min Ae Lee-Kirsch
To review recent scientific advances and therapeutic approaches in the expanding field of type I interferonopathies. Type I interferonopathies represent a genetically and phenotypically heterogenous group of disorders of the innate immune system caused by constitutive activation of antiviral type I interferon (IFN). Clinically, type I interferonopathies are characterized by autoinflammation and varying degrees of autoimmunity or immunodeficiency. The elucidation of the underlying genetic causes has revealed novel cell-intrinsic mechanisms that protect the organism against inappropriate immune recognition of self nucleic acids by cytosolic nucleic acid sensors...
April 20, 2018: Current Rheumatology Reports
https://www.readbyqxmd.com/read/29678747/predictive-markers-for-humoral-influenza-vaccine-response-in-patients-with-common-variable-immunodeficiency-cvid
#2
Ann Gardulf, Hassan Abolhassani, Rolf Gustafson, Lars E Eriksson, Lennart Hammarström
BACKGROUND: A subgroup of patients with common variable immunodeficiencies (CVID) responds to vaccination. The aim of the study was to try to identify predictive markers for those who developed a humoral immune response after influenza vaccination. METHODS: 48 patients with CVID (29 females, 19 males, mean age 59.4 years) were vaccinated with the A(H1N1) influenza vaccine Pandemrix® and boosted after one month. Blood samples were collected prior to each vaccination and two months later...
April 17, 2018: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/29678638/comprehensive-analysis-of-the-activation-and-proliferation-kinetics-and-effector-functions-of-human-lymphocytes-and-antigen-presentation-capacity-of-antigen-presenting-cells-in-xenogeneic-graft-versus-host-disease
#3
Yasufumi Kawasaki, Kazuya Sato, Hiroko Hayakawa, Norihito Takayama, Hirofumi Nakano, Ryoji Ito, Kiyomi Mashima, Iekuni Oh, Daisuke Minakata, Ryoko Yamasaki, Kaoru Morita, Masahiro Ashizawa, Chihiro Yamamoto, Kaoru Hatano, Shin-Ichiro Fujiwara, Ken Ohmine, Kazuo Muroi, Yoshinobu Kanda
Xenogeneic graft-versus-host disease (GVHD) models in highly immunodeficient mice are currently being used worldwide to investigate human immune responses against foreign antigens in vivo. However, the individual roles of CD4+ and CD8+ T-cells, and donor/host hematopoietic and non-hematopoietic antigen-presenting cells (APCs) in the induction and development of GVHD have not been fully investigated. In the present study, we comprehensively investigated the immune responses of human T-cells and the antigen presentation capacity of donor/host hematopoietic and non-hematopoietic APCs in xenogeneic GVHD models using NOD/Shi-scid-IL2rgnull (NOG) mice...
April 17, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29678144/interferon-alpha-as-antiviral-therapy-in-chronic-active-epstein-barr-virus-disease-with-interstitial-pneumonia-case-report
#4
Jacek Roliński, Ewelina Grywalska, Aleksandra Pyzik, Michał Dzik, Violetta Opoka-Winiarska, Agata Surdacka, Maciej Maj, Franciszek Burdan, Michał Pirożyński, Piotr Grabarczyk, Elżbieta Starosławska
BACKGROUND: Chronic active Epstein-Barr virus (EBV) disease (CAEBV) is defined as a severe, progressive lymphoproliferative disorder associated with active EBV infection persisting longer than 6 months and developing in patients without recognised immunodeficiency. Rarely, interstitial pneumonitis (IP) occurs as a serious complication in CAEBV patients. The standard therapeutic regimen for IP in CAEBV has not yet been defined. Although interferon alpha (IFN-alpha) is known to suppress viral DNA replication by affecting its basal promoter activation process, it is rarely used in CAEBV patients...
April 20, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29677149/prior-puma-lentivirus-infection-modifies-early-immune-responses-and-attenuates-feline-immunodeficiency-virus-infection-in-cats
#5
Wendy S Sprague, Ryan M Troyer, Xin Zheng, Britta A Wood, Martha Macmillian, Scott Carver, Susan VandeWoude
We previously showed that cats that were infected with non-pathogenic Puma lentivirus (PLV) and then infected with pathogenic feline immunodeficiency virus (FIV) (co-infection with the host adapted/pathogenic virus) had delayed FIV proviral and RNA viral loads in blood, with viral set-points that were lower than cats infected solely with FIV. This difference was associated with global CD4⁺ T cell preservation, greater interferon gamma (IFN-γ) mRNA expression, and no cytotoxic T lymphocyte responses in co-infected cats relative to cats with a single FIV infection...
April 20, 2018: Viruses
https://www.readbyqxmd.com/read/29677136/cytoplasmic-translocation-of-nucleolar-protein-nop53-promotes-viral-replication-by-suppressing-host-defense
#6
Wen Meng, Shi-Chong Han, Cui-Cui Li, Hui-Jun Dong, Jian-Yu Chang, Hwa-Chain Robert Wang, Xiao-Jia Wang
NOP53 is a tumor suppressor protein located in the nucleolus and is translocated to the cytoplasm during infection by vesicular stomatitis virus (VSV) and herpes simplex virus type 1 (HSV-1), as shown in our previous study. Cytoplasmic NOP53 interacts with the retinoic acid-inducible gene I (RIG-I) to remove its K63-linked ubiquitination, leading to attenuation of type I interferon IFN-β. In the present study, we found no obvious translocation of NOP53 in infection by a mutant virus lacking ICP4 (HSV-1/d120, replication inadequate)...
April 20, 2018: Viruses
https://www.readbyqxmd.com/read/29677122/applications-of-the-fiv-model-to-study-hiv-pathogenesis
#7
REVIEW
Craig Miller, Zaid Abdo, Aaron Ericsson, John Elder, Sue VandeWoude
Feline immunodeficiency virus (FIV) is a naturally-occurring retrovirus that infects domestic and non-domestic feline species, producing progressive immune depletion that results in an acquired immunodeficiency syndrome (AIDS). Much has been learned about FIV since it was first described in 1987, particularly in regard to its application as a model to study the closely related lentivirus, human immunodeficiency virus (HIV). In particular, FIV and HIV share remarkable structure and sequence organization, utilize parallel modes of receptor-mediated entry, and result in a similar spectrum of immunodeficiency-related diseases due to analogous modes of immune dysfunction...
April 20, 2018: Viruses
https://www.readbyqxmd.com/read/29676635/effects-of-household-air-pollution-in-malawi-and-human-immunodeficiency-virus-status-on-respiratory-symptoms-and-inflammation-injury-and-repair-markers
#8
Charles Kim, Hannah Jary, Kevin Mortimer, Kelly S Schweitzer, Doug Curran-Everett, Stephen Gordon, Irina Petrache
RATIONALE: Household air pollution (HAP) and human immunodeficiency virus (HIV) are associated with increased risk for chronic obstructive pulmonary disease. Both HAP and HIV are widespread in Sub-Saharan Africa, including Malawi, where HIV has 10.6% prevalence in patients 15-49 years old. OBJECTIVES: We hypothesized that HIV infection (HIV+ ) and habitual exposure to HAP (HAP+ ) synergize to cause systemic inflammation and vascular injury, which may herald early onset of chronic respiratory diseases...
April 2018: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/29676453/risk-factors-for-burkitt-lymphoma-a-nested-case-control-study-in-the-uk-clinical-practice-research-datalink
#9
Parisa Karimi, Brenda M Birmann, Lesley A Anderson, Charlene M McShane, Shahinaz M Gadalla, Joshua N Sampson, Sam M Mbulaiteye
Burkitt lymphoma (BL) occurs as three subtypes: endemic BL, immunosuppression-related BL and sporadic BL. Descriptive studies of BL age-specific incidence patterns have suggested multimodal peaks near 10, 40 and 70 years of age, but the risk factors for BL at different ages are unknown. We investigated risk factors for BL in the United Kingdom among 156 BL cases and 608 matched BL-free controls identified in the Clinical Practice Research Datalink (CPRD) between 1992 and 2016. Associations with pre-diagnostic body mass index, cigarette smoking, alcohol consumption, hepatitis, Epstein-Barr virus (EBV), human immunodeficiency virus infection and acquired immune deficiency syndrome (HIV/AIDS), malaria, allergic and autoimmune conditions, and prednisone use were evaluated...
April 20, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29676363/lymphomatoid-granulomatosis-a-case-series-from-south-india
#10
Elanthenral Sigamani, Jagan Chandramohan, Sheila Nair, Geeta Chacko, Meera Thomas, Leni Grace Mathew, Susanne Pulimood, Marie Therese Manipadam
Context: Lymphomatoid granulomatosis (LYG) is a rare B-lymphoproliferative disorder characterised by an angiocentric and angiodestructive pattern along with Epstein - Barr virus (EBV) association. It is one of the diagnostic challenges in lymphoma pathology. Deregulation of EBV immune surveillance is one of the narrated hypotheses in the literature. Extrapulmonary manifestations are rare with LYG. Morphological grading is done based on the number of EBV-positive B cells, which is useful to strategize treatment protocol...
April 2018: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/29676342/audit-of-prevention-of-mother-to-child-transmission-programme-interventions-in-hiv-exposed-children-at-national-hospital-abuja-nigeria
#11
Mariya Mukhtar-Yola, Adekunle Tolulope Otuneye, Amsa Baba Mairami, Yewande Wey, Vincent Nwatah, Lamidi Isah Audu
Background: Ninety percentage of children acquire human immunodeficiency virus (HIV) infection in the form of Mother-to-child Transmission (MTCT). In the absence of interventions, transmission rates range from 15% to 45%. This can be reduced to below 5% with effective interventions. The last published national guideline (NG) on prevention of MTCT (PMTCT) was in 2010. Clinical audits are essential in improving the quality of care delivered to patients. Objectives: The study objectives were to determine the rate of MTCT of HIV in exposed infants at a follow-up clinic between 2011 and 2014 and to determine the level of adherence to 2010 NG on the use of highly active antiretroviral therapy (HAART), polymerase chain reaction (PCR) testing, feeding options, antiretroviral (ARV) prophylaxis and the use of co-trimoxazole (CTZ)...
January 2018: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/29676341/the-prevalence-and-risk-factors-for-trichomonas-vaginalis-infection-amongst-human-immunodeficiency-virus-infected-pregnant-women-attending-the-antenatal-clinics-of-a-university-teaching-hospital-in-lagos-south-western-nigeria
#12
Olaolopin Ijasan, Kehinde Sharafadeen Okunade, Ayodeji Ayotunde Oluwole
Background: Trichomonas vaginalis infection is the most prevalent non-viral sexually transmitted infection worldwide. Interactions between this infection and human immunodeficiency virus (HIV) may cause adverse pregnancy outcomes such as preterm labour, premature rupture of membranes, chorioamnionitis, low birth weight and post-abortal sepsis. Aims: This study was aimed to determine the prevalence and risk factors of T. vaginalis infection amongst HIV-positive pregnant women attending antenatal care at the Lagos University Teaching Hospital (LUTH), Lagos, Nigeria...
January 2018: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/29675923/latent-therapeutic-demand-model-for-the-immunoglobulin-replacement-therapy-of-primary-immune-deficiency-disorders-in-the-usa
#13
J S Stonebraker, J Hajjar, J S Orange
BACKGROUND AND OBJECTIVES: Our research aim is to model latent therapeutic demand (LTD) for the immunoglobulin replacement therapy (IgGRT) of primary immune deficiency disorders (PIDDs) in the USA. Given the high level of variability of IgGRT use and major differences among American and European practices in the management of patients with PIDDs, we develop a USA-specific LTD model for common variable immune deficiency (CVID), hyper IGM syndrome, severe combined immune deficiency, Wiskott-Aldrich syndrome and X-linked agammaglobulinemia (XLA)...
April 20, 2018: Vox Sanguinis
https://www.readbyqxmd.com/read/29675737/use-of-genetic-testing-for-primary-immunodeficiency-patients
#14
Jennifer R Heimall, David Hagin, Joud Hajjar, Sarah E Henrickson, Hillary S Hernandez-Trujillo, Yuval Tan, Lisa Kobrynski, Kenneth Paris, Troy R Torgerson, James W Verbsky, Richard L Wasserman, Elena W Y Hsieh, Jack J Blessing, Janet S Chou, Monica G Lawrence, Rebecca A Marsh, Sergio D Rosenzweig, Jordan S Orange, Roshini S Abraham
Genetic testing plays a critical role in diagnosis for many primary immunodeficiency diseases. The goals of this report are to outline some of the challenges that clinical immunologists face routinely in the use of genetic testing for patient care. In addition, we provide a review of the types of genetic testing used in the diagnosis of PID, including their strengths and limitations. We describe the strengths and limitations of different genetic testing approaches for specific clinical contexts that raise concern for specific PID disorders in light of the challenges reported by the clinical immunologist members of the CIS in a recent membership survey...
April 19, 2018: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/29675019/enhanced-akt-phosphorylation-of-circulating-b-cells-in-patients-with-activated-pi3k%C3%AE-syndrome
#15
Takaki Asano, Satoshi Okada, Miyuki Tsumura, Tzu-Wen Yeh, Kanako Mitsui-Sekinaka, Yuki Tsujita, Youjiro Ichinose, Akira Shimada, Kunio Hashimoto, Taizo Wada, Kohsuke Imai, Osamu Ohara, Tomohiro Morio, Shigeaki Nonoyama, Masao Kobayashi
Activated PI3Kδ syndrome (APDS) is a primary immunodeficiency characterized by recurrent respiratory tract infections, lymphoproliferation, and defective IgG production. Heterozygous mutations in PIK3CD, PIK3R1 , or PTEN , which are related to the hyperactive phosphoinositide 3-kinase (PI3K) signaling, were recently presented to cause APDS1 or APDS2 (APDSs), or APDS-like (APDS-L) disorder. In this study, we examined the AKT phosphorylation of peripheral blood lymphocytes and monocytes in patients with APDSs and APDS-L by using flow cytometry...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29674746/gold-nanof%C3%A3-ve-surface-enhanced-raman-spectroscopy-visualizes-hypotaurine-as-a-robust-anti-oxidant-consumed-in-cancer-survival
#16
Megumi Shiota, Masayuki Naya, Takehiro Yamamoto, Takako Hishiki, Takeharu Tani, Hiroyuki Takahashi, Akiko Kubo, Daisuke Koike, Mai Itoh, Mitsuyo Ohmura, Yasuaki Kabe, Yuki Sugiura, Nobuyoshi Hiraoka, Takayuki Morikawa, Keiyo Takubo, Kentaro Suina, Hideaki Nagashima, Oltea Sampetrean, Osamu Nagano, Hideyuki Saya, Shogo Yamazoe, Hiroyuki Watanabe, Makoto Suematsu
Gold deposition with diagonal angle towards boehmite-based nanostructure creates random arrays of horse-bean-shaped nanostructures named gold-nanofève (GNF). GNF generates many electromagnetic hotspots as surface-enhanced Raman spectroscopy (SERS) excitation sources, and enables large-area visualization of molecular vibration fingerprints of metabolites in human cancer xenografts in livers of immunodeficient mice with sufficient sensitivity and uniformity. Differential screening of GNF-SERS signals in tumours and those in parenchyma demarcated tumour boundaries in liver tissues...
April 19, 2018: Nature Communications
https://www.readbyqxmd.com/read/29674549/a-world-health-organization-human-hepatitis-e-virus-reference-strain-related-to-similar-strains-isolated-from-rabbits
#17
Marco Kaiser, Déborah Delaune, Olivier Chazouillères, Johannes Blümel, Anne-Marie Roque-Afonso, Sally A Baylis
We report here the genome sequence of a hepatitis E virus (HEV) strain from a chronically infected immunodeficient patient. Full-length sequence analysis revealed a distinct HEV strain, of a tentative new subgenotype, clustering with viruses from rabbits. It is a World Health Organization reference strain for validation of nucleic acid testing.
April 19, 2018: Genome Announcements
https://www.readbyqxmd.com/read/29674001/in-vitro-assessment-of-competitive-and-time-dependent-inhibition-of-the-nevirapine-metabolism-by-nortriptyline-in-rats
#18
Iris Usach, José-Maria Ferrer, José-Esteban Peris
Nevirapine (NVP) is a non-nucleoside reverse transcriptase inhibitor of human immunodeficiency virus type 1 (HIV-1) widely used as a component of High Active Antiretroviral Therapy (HAART) since it is inexpensive, readily absorbed after oral administration and non-teratogenic. In the present work, the mechanism of a previously described pharmacokinetic interaction between NVP and the antidepressant drug nortriptyline (NT) was studied using rat hepatic microsomes. The obtained results showed a competitive inhibition of the NVP metabolism by NT...
April 16, 2018: Biochemical Pharmacology
https://www.readbyqxmd.com/read/29673331/prevalence-and-factors-associated-with-preterm-birth-at-kenyatta-national-hospital
#19
Peter Wagura, Aggrey Wasunna, Ahmed Laving, Dalton Wamalwa, Paul Ng'ang'a
BACKGROUND: The World Health Organization estimates the prevalence of preterm birth to be 5-18% across 184 countries of the world. Statistics from countries with reliable data show that preterm birth is on the rise. About a third of neonatal deaths are directly attributed to prematurity and this has hindered the achievement of Millennium Development Goal-4 target. Locally, few studies have looked at the prevalence of preterm delivery and factors associated with it. This study determined the prevalence of preterm birth and the factors associated with preterm delivery at Kenyatta National Hospital in Nairobi, Kenya...
April 19, 2018: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29673219/hiv-tat-p-tefb-interaction-a-potential-target-for-novel-anti-hiv-therapies
#20
REVIEW
Kaori Asamitsu, Koh Fujinaga, Takashi Okamoto
Transcription is a crucial step in the life cycle of the human immunodeficiency virus type 1 (HIV 1) and is primarily involved in the maintenance of viral latency. Both viral and cellular transcription factors, including transcriptional activators, suppressor proteins and epigenetic factors, are involved in HIV transcription from the proviral DNA integrated within the host cell genome. Among them, the virus-encoded transcriptional activator Tat is the master regulator of HIV transcription. Interestingly, unlike other known transcriptional activators, Tat primarily activates transcriptional elongation and initiation by interacting with the cellular positive transcriptional elongation factor b (P-TEFb)...
April 17, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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