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https://www.readbyqxmd.com/read/28397358/depletion-resistant-cd4-t-cells-enhance-thymopoiesis-during-lymphopenia
#1
Katayoun Ayasoufi, Ran Fan, Anna 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 to 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)...
April 11, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28389590/cutting-edge-increased-autoimmunity-risk-in-glycogen-storage-disease-type-1b-is-associated-with-a-reduced-engagement-of-glycolysis-in-t-cells-and-an-impaired-regulatory-t-cell-function
#2
Daniela Melis, Fortunata Carbone, Giorgia Minopoli, Claudia La Rocca, Francesco Perna, Veronica De Rosa, Mario Galgani, Generoso Andria, Giancarlo Parenti, Giuseppe Matarese
Glycogen storage disease type 1b (GSD-1b) is an autosomal-recessive disease caused by mutation of glucose-6-phosphate transporter and characterized by altered glycogen/glucose homeostasis. A higher frequency of autoimmune diseases has been observed in GSD-1b patients, but the molecular determinants leading to this phenomenon remain unknown. To address this question, we investigated the effect of glucose-6-phosphate transporter mutation on immune cell homeostasis and CD4(+) T cell functions. In GSD-1b subjects, we found lymphopenia and a reduced capacity of T cells to engage glycolysis upon TCR stimulation...
April 7, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28376626/waldmann-s-disease-a-rare-cause-of-protein-losing-enteropathy-in-an-adult-patient
#3
Cláudio Rodrigues Martins, Alice Gagnaire, Florian Rostain, Come Lepage
Primary intestinal lymphangiectasia or Waldmann's disease is an uncommon cause of protein losing enteropathy with an unknown etiology and is usually diagnosed during childhood. It is characterized by dilation and leakage of intestinal lymph vessels leading to hypoalbuminemia, hypogammaglobulinemia and lymphopenia. Differential diagnosis should include erosive and non-erosive gastrointestinal disorders, conditions involving mesenteric lymphatic obstruction and cardiovascular disorders that increase central venous pressure...
April 5, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28356208/paraclinical-findings-in-iranian-veterans-exposed-to-sulfur-mustard-gas-a-literature-review
#4
Seyed Mansour Razavi, Masoud Saghafinia, Payman Salamati
OBJECTIVE: Sulfur mustard (SM) causes various systemic disturbances in human beings. This study aimed to assess paraclinical changes caused by exposure to SM gas in Iranian veterans during the war between Iraq and Iran. METHODS: A literature review was carried out in international and national medical databases including ISI, Medline, Scopus, Iranmedex and Irandoc. Both Farsi and English literature were searched. RESULTS: Search of the literature yielded 422 medical articles related to SM poisoning...
April 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28348775/progressive-multifocal-leukoencephalopathy-and-black-fungus-in-a-patient-with-rheumatoid-arthritis-without-severe-lymphocytopenia
#5
Marieke J A de Regt, Jean-Luc Murk, Tilman Schneider-Hohendorf, Mike P Wattjes, Andy I M Hoepelman, Joop E Arends
INTRODUCTION: Progressive multifocal leukoencephalopathy (PML) is a rare demyelinating brain infection caused by JC polyomavirus (JCV), primarily seen in patients with severely compromised cellular immunity. Clinical presentation varies depending on the affected white matter. PML prognosis is variable and effective treatments are lacking. CASE PRESENTATION: A 75-year-old Chinese woman with type 2 diabetes mellitus, chronic kidney disease and rheumatoid arthritis, treated with low-dose methotrexate and prednisolone for 2...
August 2016: JMM Case Reports
https://www.readbyqxmd.com/read/28347748/local-and-hematological-alterations-induced-by-philodryas-olfersii-snake-venom-in-mice
#6
Juliana S Oliveira, Luciana B Sant'Anna, Manoel C Oliveira Junior, Pamella R M Souza, Adilson S Andrade Souza, Wellington Ribeiro, Rodolfo P Vieira, Stephen Hyslop, José C Cogo
Envenomation by the South American opisthoglyphous snake Philodryas olfersii causes local pain, edema, erythema and ecchymosis; systemic envenomation is rare. In this work, we examined the inflammatory activity of P. olfersii venom (10, 30 and 60 μg) in mouse gastrocnemius muscle 6 h after venom injection. Intramuscular injection of venom did not affect hematological parameters such as red cell count, hemoglobin, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin and mean corpuscular hemoglobin concentration...
March 24, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28344412/clinical-and-hematobiochemical-response-in-canine-monocytic-ehrlichiosis-seropositive-dogs-of-punjab
#7
Manasa R Kottadamane, Pritpal Singh Dhaliwal, Lachhman Das Singla, Baljinder Kumar Bansal, Sanjeev Kumar Uppal
AIM: As in India especially, the Punjab state sero-prevalence and distribution of ehrlichiosis in relation to clinico-hematobiochemical response remains largely unexplored. Thus, this study was designed to determine the prevalence of vector (tick)-borne tropical canine pancytopenia caused by Ehrlichia canis through enzyme labeled ImmunoComb(®) (IC) assay in dogs from in and around Ludhiana, Punjab. Correlation of prevalence was made with various clinico-hematobiochemical parameters. MATERIALS AND METHODS: Seroprevalence study was carried out using IC(®) test kit (Biogal, Galed Labs)...
February 2017: Veterinary World
https://www.readbyqxmd.com/read/28321815/immune-therapy-for-sarcomas
#8
Peter M Anderson
Absolute lymphocyte count (ALC) recovery rapidly occurring at 14 days after start of chemotherapy for osteosarcoma and Ewing sarcoma is a good prognostic factor. Conversely, lymphopenia is associated with significantly decreased sarcoma survival. Clearly, the immune system can contribute towards better survival from sarcoma. This chapter will describe treatment and host factors that influence immune function and how effective local control and systemic interventions of sarcoma therapy can cause inflammation and/or immune suppression but are currently the standard of care...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28291723/cardiac-surgery-in-systemic-lupus-erythematosus-patients-clinical-characteristics-and-outcomes
#9
Javier Tejeda-Maldonado, Lauro Quintanilla-González, Jaime Galindo-Uribe, Andrea Hinojosa-Azaola
OBJECTIVES: To study the clinical characteristics and outcomes in systemic lupus erythematosus (SLE) patients who underwent cardiac surgery. METHODS: Retrospective analysis of 30 SLE patients who underwent cardiac surgery at a single center. Demographics, comorbidities, clinical and serologic characteristics, cardiovascular risk scores and treatment were recorded. Type of surgery, postoperative complications, mortality and histology were analyzed. RESULTS: Disease duration at surgery was 2 years...
March 11, 2017: Reumatología Clinica
https://www.readbyqxmd.com/read/28287491/natural-killer-cell-assessment-in-peripheral-circulation-and-bronchoalveolar-lavage-fluid-of-patients-with-severe-sepsis-a-case-control-study
#10
Paulo Souza-Fonseca-Guimaraes, Fernando Guimaraes, Caroline Natânia De Souza-Araujo, Lidiane Maria Boldrini Leite, Alexandra Cristina Senegaglia, Anita Nishiyama, Fernando Souza-Fonseca-Guimaraes
Sepsis is a complex systemic inflammatory syndrome, the most common cause of which is attributed to systemic underlying bacterial infection. The complete mechanisms of the dynamic pro- and anti-inflammatory processes underlying the pathophysiology of sepsis remain poorly understood. Natural killer (NK) cells play a crucial role in the pathophysiology of sepsis, leading to exaggerated inflammation due their rapid response and production of pro-inflammatory cytokines such as interferon gamma (IFN-γ). Several studies have already shown that NK cells undergo lymphopenia in the peripheral blood of patients with sepsis...
March 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28279837/relevance-of-diagnostic-investigations-in-patients-with-uveitis-retrospective-cohort-study-on-300-patients
#11
REVIEW
Jérôme Hadjadj, Agnès Dechartres, Thibaut Chapron, Manal Assala, Sawsen Salah, Bertrand Dunogué, Lucile Musset, Bruno Baudin, Matthieu Groh, Philippe Blanche, Luc Mouthon, Dominique Monnet, Claire Le Jeunne, Antoine Brézin, Benjamin Terrier
OBJECTIVE: The diagnostic workup of uveitis is a challenge due to the wide range of diagnoses and the lack of a well-codified diagnostic procedure. We aimed to evaluate the relevance of diagnostic investigations for the etiological diagnosis of uveitis. METHODS: Retrospective cohort study of patients referred for etiological diagnosis of uveitis. Uveitis related to ophthalmological diseases or occurring during the course of previously diagnosed diseases were not included...
March 7, 2017: Autoimmunity Reviews
https://www.readbyqxmd.com/read/28216187/recombinant-proteins-of-zaire-ebolavirus-induce-potent-humoral-and-cellular-immune-responses-and-protect-against-live-virus-infection-in-mice
#12
Axel T Lehrer, Teri-Ann S Wong, Michael M Lieberman, Tom Humphreys, David E Clements, Russell R Bakken, Mary Kate Hart, William D Pratt, John M Dye
Infections with filoviruses in humans are highly virulent, causing hemorrhagic fevers which result in up to 90% mortality. In addition to natural infections, the ability to use these viruses as bioterrorist weapons is of significant concern. Currently, there are no licensed vaccines or therapeutics available to combat these infections. The pathogenesis of disease involves the dysregulation of the host's immune system, which results in impairment of the innate and adaptive immune responses, with subsequent development of lymphopenia, thrombocytopenia, hemorrhage, and death...
February 16, 2017: Vaccine
https://www.readbyqxmd.com/read/28178716/invasive-haemophilus-influenzae-infection-in-patients-with-cancer
#13
Vivek Singh, Sowmya Nanjappa, Smitha Pabbathi, John N Greene
A major cause of morbidity and mortality in patients with cancer is infection. Since the introduction of the Haemophilus influenzae type b (Hib) vaccine in the United States in the 1990s, invasive H influenzae infection has become less common. We report on 5 patients with cancer and invasive H influenzae infection. A literature review was also performed of the dominant Haemophilus subtype and the clinical features associated with the infection and concomitant cancer. Of the 17 cases found in the literature, had hematological malignancies and 1 case each had thymoma, schwannoma, teratoma, and pancreatic, Merkel cell, pharyngeal, laryngeal, and rectal carcinomas...
January 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28159165/viral-pneumonia-in-patients-with-hematologic-malignancy-or-hematopoietic-stem-cell-transplantation
#14
REVIEW
Erik Vakil, Scott E Evans
Viral pneumonias in patients with hematologic malignancies and recipients of hematopoietic stem cell transplantation cause significant morbidity and mortality. Advances in diagnostic techniques have enabled rapid identification of respiratory viral pathogens from upper and lower respiratory tract samples. Lymphopenia, myeloablative and T-cell depleting chemotherapy, graft-versus-host disease, and other factors increase the risk of developing life-threatening viral pneumonia. Chest imaging is often nonspecific but may aid in diagnoses...
March 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/28128086/vesicular-contact-reaction-may-progress-into-erythema-multiforme
#15
Magdalena Czarnecka-Operacz, Dorota Jenerowicz, Joanna Szulczyńska-Gabor, Ewa Teresiak-Mikołajczak, Joanna Szyfter-Harris, Monika Bowszyc-Dmochowska
Dear Editor, Erythema multiforme is considered an acute skin condition, characterized by a self-limiting and sometimes recurrent course. It is regarded as a type IV hypersensitivity reaction associated with certain infections, medications, and other various triggers. Allergic contact dermatitis is in turn a delayed type of induced allergy as a result of cutaneous contact with a specific allergen to which the patient develops specific sensitivity. This type of cutaneous reaction is associated with inflammation manifesting with erythema, edema, and vesicles...
December 2016: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/28120567/lower-respiratory-tract-diseases-caused-by-common-respiratory-viruses-among-stem-cell-transplantation-recipients-a-single-center-experience-in-korea
#16
Kyung Wook Hong, Su Mi Choi, Dong Gun Lee, Sung Yeon Cho, Hyo Jin Lee, Jae Ki Choi, Si Hyun Kim, Sun Hee Park, Jung Hyun Choi, Jin Hong Yoo, Jong Wook Lee
PURPOSE: To describe the incidence, clinical courses, and risk factors for mortality of lower respiratory tract diseases (LRDs) caused by common respiratory viruses (CRVs) in stem cell transplantation (SCT) recipients. MATERIALS AND METHODS: We retrospectively reviewed the medical records of 1038 patients who received SCT between January 2007 and August 2011 at a single center in Korea. RESULTS: Seventy-one CRV-LRDs were identified in 67 (6...
March 2017: Yonsei Medical Journal
https://www.readbyqxmd.com/read/28109013/investigation-of-genetic-defects-in-severe-combined-immunodeficiency-patients-from-turkey-by-targeted-sequencing
#17
B Erman, I Bilic, T Hirschmugl, E Salzer, H Boztug, Ö Sanal, D Çağdaş Ayvaz, I Tezcan, K Boztug
Primary immunodeficiencies (PIDs) represent a large group of disorders with an increased susceptibility to infections. Severe combined immunodeficiency (SCID) is the most severe form of primary immunodeficiencies (PIDs) with marked T-cell lymphopenia. Investigation of the genetic aetiology using classical Sanger sequencing is associated with considerable diagnostic delay. We here established a custom-designed, next-generation sequencing (NGS)-based panel to efficiently identify disease-causing genetic defects in PID patients and applied this method in SCID patients of Turkish origin with previously undefined genetic aetiology...
March 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28095350/progressive-multifocal-leukoencephalopathy-in-a-patient-with-systemic-mastocytosis-treated-with-cladribine
#18
Karl B Alstadhaug, Randi Fykse Halstensen, Francis Odeh
BACKGROUND: Progressive multifocal leukoencephalopathy (PML) is a rare opportunistic brain infection caused by the human polyomavirus JC (JCPyV). A particular problem with the drug cladribine seems to be prolonged suppression of the CD4+ T-cells, a well-known risk factor for PML. CASE DESCRIPTION: A 67-year-old male presented with a 3-weeks history of unsteady gait, dysarthria and a dysfunctional right arm. Seven years earlier, he had been diagnosed with urticaria pigmentosa, and 2 years later aggressive systemic mastocytosis...
March 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28093780/subacute-demyelinating-polyradiculoneuropathy-complicating-epstein-barr-virus-infection-in-gata2-haploinsufficiency
#19
Mohamed Kazamel, Christopher J Klein, Eduardo E Benarroch, Mrinal M Patnaik, Jennifer A Tracy
INTRODUCTION: Autosomal dominant haploinsufficiency of GATA2 causes monocytopenia and natural killer cell lymphopenia, resulting in predisposition to mycobacterial, fungal, and viral infections. METHODS: Herein we report on the clinical, serologic, electrophysiologic, and pathologic evaluations of a 29-year-old woman with GATA2 haploinsufficiency and active Epstein-Barr virus (EBV) infection complicated by subacute painful neuropathy. RESULTS: Nerve conduction and electromyography studies showed predominantly demyelinating sensorimotor polyradiculoneuropathy...
January 17, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28072859/increased-pd-1-expression-and-altered-t-cell-repertoire-diversity-predict-mortality-in-patients-with-septic-shock-a-preliminary-study
#20
Atsutoshi Tomino, Masanobu Tsuda, Ruri Aoki, Yuka Kajita, Masamitsu Hashiba, Tsuguaki Terajima, Hideki Kano, Naoshi Takeyama
Sepsis causes impairment of innate and adaptive immunity by multiple mechanisms, including depletion of immune effector cells and T cell exhaustion. Although lymphocyte dysfunction is associated with increased mortality and potential reactivation of latent viral infection in patients with septic shock, the relation between viral reactivation and lymphocyte dysfunction is obscure. The objectives of this study were 1) to determine the relation of lymphocyte dysfunction to viral reactivation and mortality, and 2) to evaluate recovery of lymphocyte function during septic shock, including T cell receptor (TCR) diversity and the expression of programmed death 1 (PD-1)...
2017: PloS One
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