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https://www.readbyqxmd.com/read/28550350/recent-advances-in-the-study-of-immunodeficiency-and-dna-damage-response
#1
REVIEW
Tomohiro Morio
DNA breaks can be induced by exogenous stimuli or by endogenous stress, but are also generated during recombination of V, D, and J genes (V(D)J recombination), immunoglobulin class switch recombination (CSR). Among various DNA breaks generated, DNA double strand break (DSB) is the most deleterious one. DNA damage response (DDR) is initiated when DSBs are detected, leading to DNA break repair by non-homologous end joining (NHEJ). The process is critically important for the generation of diversity for foreign antigens; and failure to exert DNA repair leads to immunodeficiency such as severe combined immunodeficiency and hyper-IgM syndrome...
May 26, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28549426/effect-of-iptp-on-plasmodium-falciparum-antibody-levels-among-pregnant-women-and-their-babies-in-a-sub-urban-coastal-area-in-ghana
#2
Judith K Stephens, Eric Kyei-Baafour, Emmanuel K Dickson, Jones K Ofori, Michael F Ofori, Mark L Wilson, Isabella A Quakyi, Bartholomew D Akanmori
BACKGROUND: Women exposed to Plasmodium infection develop antibodies and become semi-immune. This immunity is suppressed during pregnancy making both the pregnant woman and the foetus vulnerable to the adverse effects of malaria, particularly by Plasmodium falciparum. Intermittent preventive treatment of malaria in pregnancy (IPTp) with Sulfadoxine-pyrimethamine (SP) tablets is one of the current interventions to mitigate the effects of malaria on both the pregnant woman and the unborn child...
May 26, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28548243/cross-reactive-saliva-iga-antibodies-to-oxidized-ldl-and-periodontal-pathogens-in-humans
#3
Ramin Akhi, Chunguang Wang, Mikael Kyrklund, Outi Kummu, S Pauliina Turunen, Kati Hyvärinen, Arja Kullaa, Tuula Salo, Pirkko J Pussinen, Sohvi Hörkkö
AIM: Oxidized Low-Density Lipoproteins (oxLDL) are formed as a result of lipid peroxidation and are highly immunogenic and proatherogenic. In this study, saliva antibodies binding to oxLDL, Porphyromonas gingivalis (Pg) and Aggregatibacter actinomycetemcomitans (Aa), were characterized and their cross reactivity was evaluated. MATERIAL & METHODS: Resting and stimulated saliva samples were collected from 36 healthy adults (mean age 26 years). Saliva IgA, IgG and IgM autoantibody levels to copper oxidized LDL (CuOx-LDL) and malondialdehyde acetaldehyde modified LDL (MAA-LDL), were determined with chemiluminescence immunoassay...
May 26, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28547819/the-impact-of-serum-incubation-time-on-igm-igg-binding-to-porcine-aortic-endothelial-cells
#4
Zhongqiang Zhang, Bingsi Gao, Chengjiang Zhao, Cassandra Long, Haizhi Qi, Mohamed Ezzelarab, David Kc Cooper, Hidetaka Hara
The results of the assay for measuring anti-non-Gal antibodies (which affect pig xenograft survival) in recipients are important. Serum incubation time and concentration may be important factors in the extent of antibody binding to the graft. The aim of this in vitro study was to determine the optimal incubation time and serum concentration for measuring anti-non-Gal antibody binding to porcine aortic endothelial cells (pAECs). Pooled human, naive, and sensitized baboon sera were incubated with wild-type, α1,3-galactosyltransferase gene-knockout (GTKO), and GTKO/human CD55 pAECs...
May 25, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28546881/haematological-malignancies-in-systemic-sclerosis-patients-case-reports-and-review-of-the-world-literature
#5
M Colaci, D Giuggioli, C Vacchi, C Ferri
Background. The association of systemic sclerosis (SSc) and haematological cancers was reported in a large number of case reports and cohort studies, describing SSc patients with highly heterogeneous clinical pictures. Objective. We reviewed the literature to better describe SSc patients with haematological malignancies. Methods. SSc cases complicated by haematological malignancies described in the world literature were collected; other 2 cases referred to our centre were reported. Results. One hundred-thirty SSc subjects were collected from 1954 up to date...
2017: Case Reports in Rheumatology
https://www.readbyqxmd.com/read/28546857/chloroquine-inhibits-ca-2-permeable-ion-channels-mediated-ca-2-signaling-in-primary-b-lymphocytes
#6
Yi-Fan Wu, Ping Zhao, Xi Luo, Jin-Chao Xu, Lu Xue, Qi Zhou, Mingrui Xiong, Jinhua Shen, Yong-Bo Peng, Meng-Fei Yu, Weiwei Chen, Liqun Ma, Qing-Hua Liu
BACKGROUND: Chloroquine, a bitter tastant, inhibits Ca(2+) signaling, resulting in suppression of B cell activation; however, the inhibitory mechanism remains unclear. RESULTS: In this study, thapsigargin (TG), but not caffeine, induced sustained intracellular Ca(2+) increases in mouse splenic primary B lymphocytes, which were markedly inhibited by chloroquine. Under Ca(2+)-free conditions, TG elicited transient Ca(2+) increases, which additionally elevated upon the restoration of 2 mM Ca(2+)...
2017: Cell & Bioscience
https://www.readbyqxmd.com/read/28546760/analysis-of-immune-status-after-iodine-125-permanent-brachytherapy-in-prostate-cancer
#7
E Du, Lin Wang, Chang-Ying Li, Chang-Wen Zhang, Yan-Chun Qu, Ran-Lu Liu, Yong Xu, Kuo Yang, Zhi-Hong Zhang
BACKGROUND: Permanent prostate brachytherapy (PPB) is an effective treatment choice for low and intermediate risk prostate cancer (PCa). However, the impact of PPB on tumor immune status is still poorly understood. This study aimed to assess the immune status in PCa patients before and at different time points after PPB (1, 3, 6, and 12 months). METHODS: Blood was collected from 32 patients with low and intermediate risk PCa and 12 healthy volunteers. The frequency of immunocompetent cells was identified by flow cytometry...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28546022/expression-of-immune-genes-in-systemic-and-mucosal-immune-tissues-of-channel-catfish-vaccinated-with-live-theronts-of-ichthyophthirius-multifiliis
#8
De-Hai Xu, Gabriel S A Moreira, Craig A Shoemaker, Dunhua Zhang, Benjamin H Beck
Ichthyophthiriasis caused by Ichthyophthirius multifiliis (Ich) has a worldwide distribution and affects most freshwater fishes. Fish surviving natural infection and/or immunized with Ich develop strong innate and adaptive immune responses. However, there is a lack of the knowledge regarding immune gene expression patterns in systemic and mucosal immune tissues, and how immune genes interact and lead to innate and adaptive immune protection against Ich infection in fish. The objective of this study was to investigate the expression of innate and adaptive immune-related genes in systemic (liver, spleen) and mucosal (gill, intestine) tissues of channel catfish over time following vaccination with live Ich theronts...
May 22, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28545413/development-of-an-lps-based-elisa-for-diagnosis-of-yersinia-enterocolitica-o-3-infections-in-danish-patients-a-follow-up-study
#9
Tine Dalby, Eva Rasmussen, Peter Schiellerup, Karen Angeliki Krogfelt
BACKGROUND: The bacterium Yersinia enterocolitica causes gastroenteritis in humans. The study aimed to develop a diagnostic enzyme-linked immunosorbent assay (ELISA) for detection of Yersinia enterocolitica O:3 LPS antibodies in sera from Danish patients with suspected Yersinia enterocolitica O:3 gastrointestinal infection. As a part of this, antibody decay profiles after culture confirmed Yersinia enteritis were studied. RESULTS: An ELISA using Yersinia enterocolitica O:3 LPS as the coating antigen was developed for measuring IgA, IgG and IgM specific antibodies...
May 25, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28545410/combined-proximal-tubulopathy-crystal-storing-histiocytosis-and-cast-nephropathy-in-a-patient-with-light-chain-multiple-myeloma
#10
Chung-Kuan Wu, An-Hang Yang, Hung-Chih Lai, Bing-Shi Lin
BACKGROUND: The diagnosis of myeloma, a plasma dyscrasia, often results from the workup of unexplained renal disease. Persistent renal failure in myeloma is commonly caused by tubular nephropathy due to circulating immunoglobulins and free light chains. Myeloma cast nephropathy is characterized by crystalline precipitates of monoclonal light chains within distal tubules. Immunoglobulin crystallization rarely occurs intracellularly, within proximal tubular cells (light chain proximal tubulopathy) and interstitial histiocytes (crystal-storing histiocytosis)...
May 25, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28544099/genetic-signatures-coupled-with-lineage-shift-characterize-endemic-evolution-of-dengue-virus-serotype-2-during-2015-outbreak-in-delhi-india
#11
Manish Chandra Choudhary, Ekta Gupta, Shvetank Sharma, Nadeem Hasnain, Pragya Agarwala
OBJECTIVE: In 2015 New Delhi witnessed a massive outbreak of Dengue virus (DENV) resulting in high morbidity and mortality. We report the molecular characterization of the dominant circulating DENV strain to understand its evolution and dispersal. MATERIALS AND METHODS: DENV infections were diagnosed by detection of IgM/NS1 antigen and serotyping was performed by C-PrM PCR. Envelope gene was amplified and variation(s) in envelope gene were analyzed. Phylogenetic tree construction, time-based phylogeny and origin of DENV were analyzed...
May 23, 2017: Tropical Medicine & International Health: TM & IH
https://www.readbyqxmd.com/read/28543448/successful-treatment-of-pure-red-cell-aplasia-because-of-abo-major-mismatched-stem-cell-transplant
#12
Katie Sackett, Claudia S Cohn, Kayla Fahey-Ahrndt, Angela R Smith, Andrew D Johnson
BACKGROUND: Pure red cell aplasia (PRCA) is a well-documented potential side effect of ABO major mismatched allogeneic hematopoietic stem cell transplants. This side effect may be self-limiting, but is sometimes treated using modalities such as steroids, antithymocyte globulin, donor lymphocyte infusions, rituximab, or plasma exchanges. Another well-documented cause of pure red cell aplasia is a chronic parvovirus B19 infection, which may be seen in immunocompromised hosts. The treatment of this cause of PRCA includes removal of immunosuppression, intravenous immunoglobulin (IVIg), or rituximab; however, this condition may also be self-limiting...
May 24, 2017: Journal of Clinical Apheresis
https://www.readbyqxmd.com/read/28543433/mumps-outbreak-in-a-tribal-population-from-the-union-territory-of-dadra-and-nagar-haveli-india
#13
Siddharth M Tilavat, Sunil R Vaidya, Venkat S Hamde
A cluster of parotitis cases (n=13) were observed in a tribal population of Vansda village from the Union Territory of Dadra and Nagar Haveli, India between 20(th) and 22(nd) week of 2016. Primary information was received by the local Infectious Disease Surveillance Program team, and subsequently field investigations were carried out in the affected area. Active surveillance was conducted till twice the incubation period from onset of the last surveyed case. For the laboratory investigations, 19 serum samples were collected from 11-suspected cases and their close contacts (n=8)...
May 20, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28543101/immunoglobulin-m-antibodies-are-not-specific-for-serodiagnosis-of-human-toxocariasis
#14
William Henry Roldán, Guita Rubinsky Elefant, Antonio Walter Ferreira
Serodiagnosis of human toxocariasis is established by detecting serum anti-Toxocara IgG antibodies, but there is little knowledge regarding the reactivity of human IgM antibodies against the Toxocara antigens. In this study, we have evaluated the reactivity of IgM antibodies in sera from patients with toxocariasis, patients with other helminth infections, and healthy individuals, against Toxocara larval excretory-secretory (TES) antigens by enzyme-linked immunosorbent assay (ELISA) and western-blot (WB). Anti-Toxocara IgM were detected in 91...
May 25, 2017: Parasite Immunology
https://www.readbyqxmd.com/read/28542664/-vertical-transmission-of-chikungunya-virus-infection-case-report
#15
Sara E Cardona-Correa, Lina María Castaño-Jaramillo, Augusto Quevedo-Vélez
Chikungunya virus infection is a disease transmitted by vectors, in which vertical transmission was described in years 2005-2006. An infection rate up to 49% in neonates born from mothers with active viremia during labor has been observed. Perinatal infection could results in serious complications and potential cognitive impairment. OBJECTIVE: To describe a newborn with Chikungunya virus infection secundary to vertical transmission. Clínical case: A female newborn is analyzed. She presented with fever and exanthema during her first week of life, elevation of transaminases and thrombocytopenia...
April 2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28542611/no-molecular-or-serological-evidence-of-zikavirus-infection-among-healthy-blood-donors-living-in-or-travelling-to-regions-where-aedes-albopictus-circulates
#16
Wegene Borena, Tamara Hofer, Karin Stiasny, Stephan W Aberle, Manfred Gaber, Dorothee von Laer, Harald Schennach
BACKGROUND: Previous studies have shown that Zika virus can infect and be transmitted by A. albopictus. The World Health organization (WHO) has raised concerns of autochthonous transmission of the virus in regions where the vector is endemic. The aim of this pilot study was to assess the occurrence of Zika virus (ZIKV) in western Austria (Tyrol) especially after a history of travel to A. albopictus endemic regions. METHODS: The study participants were healthy blood donors at randomly selected donation sites in the west Austrian region Tyrol...
2017: PloS One
https://www.readbyqxmd.com/read/28540909/unusual-presentation-of-systemic-lupus-erythematosus
#17
E Mahesh, Parampalli Rakesh Madhyastha, Vijay Varma, K C Gurudev, M S Gireesh, Sujeeth Reddy Bande
Bullous systemic lupus erythematosus is a rare distinctive subepidermal blistering disorder that can occur in patients with systemic lupus erythematosus (SLE). It is histologically characterized by a neutrophil-predominant infiltrate in the subepidermal region with deposition of immunoglobulins (IgG, IgA, IgM), C3, and auto-antibodies against collagen VII. Herein, we report a case of a 13-year-old girl who presented with bullous SLE and Class III lupus nephritis, which is extremely rare at this age.
May 2017: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/28537654/effect-of-ecological-immune-enhanced-enteral-nutrition-on-patients-with-gastrointestinal-fistulas
#18
Q-H Wang
OBJECTIVE: The aim of this study was to determine the effects of early ecological immune-enhanced enteral nutrition on the nutritional status, immune function and intestinal mucosal barrier in patients with gastrointestinal fistulas. PATIENTS AND METHODS: 54 patients with gastrointestinal fistulas were randomized to either the ecological immune-enhanced enteral nutrition group (EIEN group, 28) or the parenteral nutrition group (PN group, 26). The changes in the immunity, nutrition index and intestinal mucosal barrier indexes before the ecological immune-enhanced enteral nutrition support and at 7 days and 14 days after the ecological immune-enhanced enteral nutrition support were determined...
May 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28536483/development-and-evaluation-of-an-immunochromatographic-assay-to-detect-serum-anti-leptospiral-lipopolysaccharide-igm-in-acute-leptospirosis
#19
Galayanee Doungchawee, Direk Sutdan, Kannika Niwatayakul, Tasanee Inwisai, Athisri Sitthipunya, Naphatsawan Boonsathorn, Titipatima Sakulterdkiat, Worachart Sirawaraporn, Visith Thongboonkerd
Leptospirosis is a common life-threatening disease worldwide. However, its diagnosis is frequently ineffective because the gold standard bacterial culture and microscopic agglutination test (MAT) are usually positive 1-2 weeks after the disease onset. We thus developed an immunochromatographic assay (LEPkit) to detect serum anti-leptospiral lipopolysaccharide (LPS) IgM for rapid diagnosis of acute leptospirosis. Using referenced sera of 77 leptospirosis and 91 non-leptospirosis cases, LEPkit yielded 97.4% sensitivity, 94...
May 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28536306/chronic-lymphocytic-leukemia-with-mutated-ighv4-34-receptors-shared-and-distinct-immunogenetic-features-and-clinical-outcomes
#20
Aliki Xochelli, Panagiotis Baliakas, Ioannis Kavakiotis, Andreas Agathangelidis, Lesley-Ann Sutton, Eva Minga, Stavroula Ntoufa, Eugen Tausch, Xiao-Jie Yan, Tait D Shanafelt, Karla Plevova, Myriam Boudjogra, Davide Rossi, Zadie Davis, Alba Navarro, Yorick Sandberg, Fie Juhl Vojdeman, Lydia Scarfò, Niki Stavroyianni, Andrey Sudarikov, Silvio Veronese, Tatiana Tzenou, Teodora Karan Djurasevic, Mark A Catherwood, Dirk Kienle, Maria Chatzouli, Monica Facco, Jasmin Bahlo, Christiane Pott, Lone Bredo Pedersen, Larry Mansouri, Karin E Smedby, Charles C Chu, Véronique Giudicelli, Marie-Paule Lefranc, Panagiotis Panagiotidis, Gunnar Juliusson, Achilles Anagnostopoulos, Ioannis Vlahavas, Darko Antic, Livio Trentin, Marco Montillo, Carsten U Niemann, Hartmut Dohner, Anton W Langerak, Sarka Pospisilova, Michael Hallek, Elias Campo, Nicholas- Chiorazzi, Nikos Maglaveras, David Oscier, Gianluca Gaidano, Diane F Jelinek, Stephan Stilgenbauer, Ioanna Chouvarda, Nikos Darzentas, Chrysoula Belessi, Frédéric Davi, Anastasia Hadzidimitriou, Richard Rosenquist, Paolo Ghia, Kostas Stamatopoulos
We sought to investigate if B cell receptor immunoglobulin (BcR IG) stereotypy is associated with particular clinicobiological features amongst chronic lymphocytic leukemia (CLL) patients expressing mutated BcR IG (M-CLL) encoded by the IGHV4-34 gene, and also ascertain whether these associations could refine prognostication.<br /> <p>Experimental Design: In a series of 19,907 CLL cases with available immunogenetic information, we identified 339 IGHV4-34 expressing cases assigned to one of the four largest stereotyped M-CLL subsets, namely subsets #4, #16, #29 and #201, and investigated in detail their clinicobiological characteristics and disease outcomes...
May 23, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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