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lymphopenia causes

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https://www.readbyqxmd.com/read/28767614/primary-intestinal-lymphangiectasia-in-an-elderly-female-patient-a-case-report-on-a-rare-cause-of-secondary-immunodeficiency
#1
Xaver Huber, Lukas Degen, Simone Muenst, Marten Trendelenburg
Protein loss via the gut can be caused by a number of gastrointestinal disorders, among which intestinal lymphangiectasia has been described to not only lead to a loss of proteins but also to a loss of lymphocytes, resembling secondary immunodeficiency. We are reporting on a 75-year-old female patient who came to our hospital because of a minor stroke. She had no history of serious infections. During the diagnostic work-up, we detected an apparent immunodeficiency syndrome associated with primary intestinal lymphangiectasia...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28743717/analysis-of-the-recovery-of-cd247-expression-in-a-pid-patient-insights-into-the-spontaneous-repair-of-defective-genes
#2
Alfonso Blázquez-Moreno, Adriana Pérez-Portilla, Miriam Agúndez-Llaca, Daniela Dukovska, Mar Valés-Gómez, Cigdem Aydogmus, Aydan Ikinciogullari, José R Regueiro, Hugh T Reyburn
Mutations in T-cell antigen receptor (TCR) subunits genes cause rare immunodeficiency diseases characterized by impaired expression of the TCR at the cell surface and selective T lymphopenia. Here detailed analyses of spontaneously arising somatic mutations that recover CD247, and so TCR expression, in a newly identified CD247 deficient patient are described. The recovery of CD247 expression in some patient T cells was associated with both reversion of the inactivating mutation and a variant with a compensating mutation that could reconstitute TCR expression, but not as efficiently as wild-type CD247...
July 25, 2017: Blood
https://www.readbyqxmd.com/read/28695300/new-fty720-docetaxel-nanoparticle-therapy-overcomes-fty720-induced-lymphopenia-and-inhibits-metastatic-breast-tumour-growth
#3
Heba Alshaker, Qi Wang, Shyam Srivats, Yimin Chao, Colin Cooper, Dmitri Pchejetski
PURPOSE: Combining molecular therapies with chemotherapy may offer an improved clinical outcome for chemoresistant tumours. Sphingosine-1-phosphate (S1P) receptor antagonist and sphingosine kinase 1 (SK1) inhibitor FTY720 (FTY) has promising anticancer properties, however, it causes systemic lymphopenia which impairs its use in cancer patients. In this study, we developed a nanoparticle (NP) combining docetaxel (DTX) and FTY for enhanced anticancer effect, targeted tumour delivery and reduced systemic toxicity...
July 10, 2017: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/28694137/idiopathic-t-cell-lymphopenia-identified-in-new-york-state-newborn-screening
#4
Stephanie Albin-Leeds, Juliana Ochoa, Harshna Mehta, Beth H Vogel, Michele Caggana, Vincent Bonagura, Heather Lehman, Mark Ballow, Arye Rubinstein, Subhadra Siegel, Leonard Weiner, Geoffrey A Weinberg, Charlotte Cunningham-Rundles
Quantification of T-cell receptor excision circles (TRECs) for newborn screening for SCID has advanced the diagnosis of severe combined immune deficiency (SCID). However, it has led to the identification of infants with T cell lymphopenia without known cause. The clinical characteristics, appropriate laboratory monitoring, and outcomes of patients remain unclear. We performed a retrospective review of clinical and laboratory studies for 26 infants collected from 7 New York State referral centers from 2010 to 2016 with low TRECs (mean, 70copies/μl) and subnormal CD3 counts (mean, 1150/cubicmm)...
July 8, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28666250/the-novel-sphingosine-1-phosphate-receptors-antagonist-ad2900-affects-lymphocyte-activation-and-inhibits-t-cell-entry-into-the-lymph-nodes
#5
Jing Song, Arie Dagan, Zhanna Yakhtin, Shimon Gatt, Sean Riley, Hugh Rosen, Reuven Or, Osnat Almogi-Hazan
Sphingolipid derivatives play key roles in immune cell migration and function. Synthetic sphingolipid analogues are used as therapeutics to intervene various inflammatory and malignant conditions. We hypothesize that different analogs have different effects on immune cells and therefore can be used as treatment for specific diseases. This study examines the properties of the novel synthetic sphingolipid analog, AD2900, and its effects on immune cell activation and lymphocyte localization in homeostasis. AD2900 is an antagonist for all sphingosine-1-phosphate (S1P) receptors...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28633762/usefulness-of-mean-platelet-volume-to-lymphocyte-ratio-for-predicting-angiographic-no-reflow-and-short-term-prognosis-after-primary-percutaneous-coronary-intervention-in-patients-with-st-segment-elevation-myocardial-infarction
#6
Alparslan Kurtul, Sadik Kadri Acikgoz
Primary percutaneous coronary intervention (pPCI) is associated with improved prognosis in patients with ST-segment elevation myocardial infarction (STEMI). However, no-reflow phenomenon limits the benefit of revascularization and predicts adverse outcomes. The specific mechanism for its occurrence is still not entirely clear, and it is believed at present that platelet activation and inflammation play a pivotal role in developing no-reflow. Both increased mean platelet volume (MPV), which is a platelet activation marker, and lymphopenia, which is an inflammation marker, have been linked to adverse events and poor prognosis after STEMI...
August 15, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28603521/novel-combined-immune-deficiency-and-radiation-sensitivity-blended-phenotype-in-an-adult-with-biallelic-variations-in-zap70-and-rnf168
#7
Ivan K Chinn, Robert P Sanders, Asbjørg Stray-Pedersen, Zeynep H Coban-Akdemir, Vy Hong-Diep Kim, Harjit Dadi, Chaim M Roifman, Troy Quigg, James R Lupski, Jordan S Orange, I Celine Hanson
With the advent of high-throughput genomic sequencing techniques, novel genetic etiologies are being uncovered for previously unexplained Mendelian phenotypes, and the underlying genetic architecture of disease is being unraveled. Although most of these "mendelizing" disease traits represent phenotypes caused by single-gene defects, a percentage of patients have blended phenotypes caused by pathogenic variants in multiple genes. We describe an adult patient with susceptibility to bacterial, herpesviral, and fungal infections...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28571224/waldmann-s-disease-primary-intestinal-lymphangiectasia-with-atrial-septal-defect
#8
Shrikiran Aroor, Suneel Mundkur, Shravan Kanaparthi, Sandeep Kumar
Waldmann's disease or Primary Intestinal Lymphangiectasia (PIL) is a rare disorder of gastrointestinal tract characterized by dilated lymphatics and widened villi causing leakage of lymph into intestinal lumen. Loss of lymph leads to hypoalbuminemia, hyogammaglobulinemia and lymphopenia. Secondary lymphangiectasia occurs secondary to an elevated lymphatic pressure as in lymphoma, systemic lupus erythematosus, constrictive pericarditis, cardiac surgeries (Fontan's procedure), inflammatory bowel disease and malignancies...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28558844/radiation-related-lymphopenia-is-associated-with-spleen-irradiation-dose-during-radiotherapy-in-patients-with-hepatocellular-carcinoma
#9
Jing Liu, Qianqian Zhao, Weiye Deng, Jie Lu, Xiaoqing Xu, Renben Wang, Xia Li, Jinbo Yue
BACKGROUND: The decrease in peripheral blood lymphocytes induced by radiation lessens the antitumour effect of the immune response, which might cause immunosuppression. We aimed to investigate the correlation between the decrease in peripheral blood lymphocytes during radiotherapy (RT) and the spleen irradiation dose in patients with hepatocellular carcinoma (HCC). METHODS: The subjects were 59 patients with HCC who had received RT from 2005 to 2014. The Min ALC (minimum value of absolute counts for peripheral blood lymphocytes) was collected from the routine workup for each patient prior to RT and weekly during RT...
May 30, 2017: Radiation Oncology
https://www.readbyqxmd.com/read/28540525/identification-of-22q11-2-deletion-syndrome-via-newborn-screening-for-severe-combined-immunodeficiency
#10
Jessica C Barry, Terrence Blaine Crowley, Soma Jyonouchi, Jennifer Heimall, Elaine H Zackai, Kathleen E Sullivan, Donna M McDonald-McGinn
PURPOSE: Chromosome 22q11.2 deletion syndrome (22q11.2DS), the most common cause of DiGeorge syndrome, is quite variable. Neonatal diagnosis traditionally relies on recognition of classic features and cytogenetic testing, but many patients come to attention only following identification of later onset conditions, such as hypernasal speech due to palatal insufficiency and developmental and behavioral differences including speech delay, autism, and learning disabilities that would benefit from early interventions...
July 2017: Journal of Clinical Immunology
https://www.readbyqxmd.com/read/28527887/mst1-deficiency-promotes-b-cell-responses-by-cd4-t-cell-derived-il-4-resulting-in-hypergammaglobulinemia
#11
Eunchong Park, Myun Soo Kim, Ju Han Song, Kyung-Hye Roh, Rana Lee, Tae Sung Kim
MST1 deficiency causes T and B cell lymphopenia, resulting in combined immunodeficiency. However, MST1-deficient patients also exhibit autoimmune-like symptoms such as hypergammaglobulinemia and autoantibody production. Recent studies have shown that the autoimmune responses observed in MST1-deficient patients were most likely attributable to defective regulatory T (Treg) cells instead of intrinsic signals in MST1-lacking B cells. Nevertheless, it is not determined how MST1 deficiency in T cells breaks B cell tolerance and causes systemic autoimmune-like phenotypes...
July 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28512628/dysplasia-of-granulocytes-in-a-patient-with-hpv-disease-recurrent-infections-and-b-lymphopenia-a-novel-variant-of-whim-syndrome
#12
Giusella M F Moscato, Erica Giacobbi, Lucia Anemona, Silvia Di Cesare, Gigliola Di Matteo, Massimo Andreoni, Alessandro Mauriello, Viviana Moschese
WHIM syndrome is a condition in which affected persons have chronic peripheral neutropenia, lymphopenia, abnormal susceptibility to human papilloma virus infection, and myelokathexis. Myelokathexis refers to the retention of mature neutrophils in the bone marrow (BM), which accounts for degenerative changes and hypersegmentation. Most patients present heterozygous autosomal dominant mutations of the gene encoding CXCR4. Consequently, aberrant CXCL12/CXCR4 signaling impairs the receptor downregulation causing hyperactivation (gain-of-function) that affects BM homing for myelopoiesis and lymphopoiesis and the release of neutrophils in the bloodstream...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28497777/phase-i-ii-clinical-trial-to-assess-safety-and-efficacy-of-intratumoral-and-subcutaneous-injection-of-hvj-e-in-castration-resistant-prostate-cancer-patients
#13
K Fujita, Y Nakai, A Kawashima, T Ujike, A Nagahara, T Nakajima, T Inoue, C M Lee, M Uemura, Y Miyagawa, Y Kaneda, N Nonomura
Inactivated Sendai virus particles (hemagglutinating virus of Japan envelope (HVJ-E)) have a novel antitumor effect: HVJ-E fused to prostate cancer cells via cell surface receptor causes apoptosis of prostate cancer cells in vitro and in vivo. HVJ-E also induces antitumor immunity by activating natural killer (NK) cells and cytotoxic T cells and suppressing regulatory T cells in vivo. We conducted an open-label, single-arm, phase I/II clinical trial in patients with castration-resistant prostate cancer (CRPC) to determine the safety and efficacy of intratumoral and subcutaneous injection of HVJ-E...
May 12, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28495639/safety-and-tolerability-of-the-first-in-class-agent-cpi-613-in-combination-with-modified-folfirinox-in-patients-with-metastatic-pancreatic-cancer-a-single-centre-open-label-dose-escalation-phase-1-trial
#14
Angela Alistar, Bonny B Morris, Rodwige Desnoyer, Heidi D Klepin, Keyanoosh Hosseinzadeh, Clancy Clark, Amy Cameron, John Leyendecker, Ralph D'Agostino, Umit Topaloglu, Lakmal W Boteju, Asela R Boteju, Rob Shorr, Zuzana Zachar, Paul M Bingham, Tamjeed Ahmed, Sandrine Crane, Riddhishkumar Shah, John J Migliano, Timothy S Pardee, Lance Miller, Gregory Hawkins, Guangxu Jin, Wei Zhang, Boris Pasche
BACKGROUND: Pancreatic cancer statistics are dismal, with a 5-year survival of less than 10%, and more than 50% of patients presenting with metastatic disease. Metabolic reprogramming is an emerging hallmark of pancreatic adenocarcinoma. CPI-613 is a novel anticancer agent that selectively targets the altered form of mitochondrial energy metabolism in tumour cells, causing changes in mitochondrial enzyme activities and redox status that lead to apoptosis, necrosis, and autophagy of tumour cells...
June 2017: Lancet Oncology
https://www.readbyqxmd.com/read/28480794/dimethyl-fumarate-induces-changes-in-b-and-t-lymphocyte-function-independent-of-the-effects-on-absolute-lymphocyte-count
#15
Erin E Longbrake, Claudia Cantoni, Salim Chahin, Francesca Cignarella, Anne H Cross, Laura Piccio
BACKGROUND: Dimethyl fumarate (DMF) is used to treat relapsing multiple sclerosis and causes lymphopenia in a subpopulation of treated individuals. Much remains to be learned about how the drug affects B- and T-lymphocytes. OBJECTIVES: To characterize changes in B- and T-cell phenotype and function induced by DMF and to investigate whether low absolute lymphocyte count (ALC) is associated with unique functional changes. METHODS: Peripheral blood mononuclear cells (PBMCs) were collected from DMF-treated patients, untreated patients, and healthy controls...
May 1, 2017: Multiple Sclerosis: Clinical and Laboratory Research
https://www.readbyqxmd.com/read/28459367/glioblastoma-synthesized-g-csf-and-gm-csf-contribute-to-growth-and-immunosuppression-potential-therapeutic-benefit-from-dapsone-fenofibrate-and-ribavirin
#16
REVIEW
Richard E Kast, Quentin A Hill, Didier Wion, Håkan Mellstedt, Daniele Focosi, Georg Karpel-Massler, Tim Heiland, Marc-Eric Halatsch
Increased ratio of circulating neutrophils to lymphocytes is a common finding in glioblastoma and other cancers. Data reviewed establish that any damage to brain tissue tends to cause an increase in G-CSF and/or GM-CSF (G(M)-CSF) synthesized by the brain. Glioblastoma cells themselves also synthesize G(M)-CSF. G(M)-CSF synthesized by brain due to damage by a growing tumor and by the tumor itself stimulates bone marrow to shift hematopoiesis toward granulocytic lineages away from lymphocytic lineages. This shift is immunosuppressive and generates the relative lymphopenia characteristic of glioblastoma...
May 2017: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/28442605/the-toll-like-receptor-4-antagonist-eritoran-protects-mice-from-lethal-filovirus-challenge
#17
Patrick Younan, Palaniappan Ramanathan, Jessica Graber, Fabian Gusovsky, Alexander Bukreyev
The 2013-2016 outbreak of Ebola virus (EBOV) in West Africa, which has seen intermittent reemergence since it was officially declared over in February of 2016, has demonstrated the need for the rapid development of therapeutic intervention strategies. Indirect evidence has suggested that the EBOV infection shares several commonalities associated with the onset of bacterial sepsis, including the development of a "cytokine storm." Eritoran, a Toll-like receptor 4 (TLR4) antagonist, was previously shown to result in protection of mice against lethal influenza virus infection...
April 25, 2017: MBio
https://www.readbyqxmd.com/read/28438219/adverse-drug-reactions-and-kinetics-of-cisplatin-excretion-in-urine-of-patients-undergoing-cisplatin-chemotherapy-and-radiotherapy-for-head-and-neck-cancer-a-prospective-study
#18
Marília Berlofa Visacri, Eder de Carvalho Pincinato, Graziele Baldan Ferrari, Júlia Coelho França Quintanilha, Priscila Gava Mazzola, Carmen Silvia Passos Lima, Patricia Moriel
BACKGROUND: Cisplatin is a high-potency anticancer agent; however, it causes significant adverse drug reactions (ADRs). Potential pharmacokinetic markers must be studied to predict or prevent cisplatin-induced ADRs and achieve better prognosis. This study was designed to investigate the relationship between ADRs and kinetics of cisplatin excretion in the urine of patients undergoing high-dose cisplatin chemotherapy and radiotherapy for head and neck cancer. METHODS: Outpatients with head and neck cancer received a first cycle of high-dose cisplatin chemotherapy (80-100 mg/m(2)) concurrent to radiotherapy...
April 24, 2017: Daru: Journal of Faculty of Pharmacy, Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28438110/temporal-progression-of-lesions-in-guinea-pigs-infected-with-lassa-virus
#19
T M Bell, C I Shaia, J J Bearss, M E Mattix, K A Koistinen, S P Honnold, X Zeng, C D Blancett, G C Donnelly, J D Shamblin, E R Wilkinson, K A Cashman
Lassa virus (LASV) infection causes an acute, multisystemic viral hemorrhagic fever that annually infects an estimated 100 000 to 300 000 persons in West Africa. This pathogenesis study evaluated the temporal progression of disease in guinea pigs following aerosol and subcutaneous inoculation of the Josiah strain of LASV as well as the usefulness of Strain 13 guinea pigs as an animal model for Lassa fever. After experimental infection, guinea pigs ( Cavia porcellus; n = 67) were serially sampled to evaluate the temporal progression of infection, gross and histologic lesions, and serum chemistry and hematologic changes...
May 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28397358/depletion-resistant-cd4-t-cells-enhance-thymopoiesis-during-lymphopenia
#20
K Ayasoufi, R Fan, A Valujskikh
Lymphoablation is routinely used in transplantation, and its success is defined by the balance of pathogenic versus protective T cells within reconstituted repertoire. While homeostatic proliferation and thymopoiesis may both cause T cell recovery during lymphopenia, the relative contributions of these mechanisms remain unclear. The goal of this study was to investigate the role of the thymus during T cell reconstitution in adult allograft recipients subjected to lymphoablative induction therapy. Compared with euthymic mice, thymectomized heart allograft recipients demonstrated severely impaired CD4 and CD8 T cell recovery and prolonged heart allograft survival after lymphoablation with murine anti-thymocyte globulin (mATG)...
August 2017: American Journal of Transplantation
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