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Immunosuppresion

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https://www.readbyqxmd.com/read/30072754/effect-of-imidacloprid-ingestion-on-immune-responses-to-porcine-reproductive-and-respiratory-syndrome-virus
#1
J Hernandez, A Volland, B J Leyshon, M Juda, J M Ridlon, R W Johnson, A J Steelman
Nicotine and acetylcholine cause immunosuppresion by signaling to the α7 nicotinic acetylcholine receptor (α7 nAChR) on immune cells. Neonicotinoids are nAChR agonists and widly used insecticides. We aimed to define the immunosuppressive potential of dietary exposure to the neonicotinoid imidacloprid (IMI) on the generation of innate and adaptive immune responses to porcine reproductive and respiratory syndrome virus (PRRSV). Piglets were randomized into groups based on diet and infection. Behavioral signs of illness were recorded...
August 2, 2018: Scientific Reports
https://www.readbyqxmd.com/read/30024415/facilitating-cells-role-in-inducing-transplantation-tolerance
#2
Anita Yogendra Chhabra, Suzanne T Ildstad
PURPOSE OF REVIEW: This review discusses the role and mechanisms by which facilitating cells promote stem cell engraftment and induce tolerance in HLA-disparate kidney transplant recipients. RECENT FINDING: Facilitating cells in both mice and human are heterogeneous, consisting of several subpopulations. They have been shown to enhance stem cell engraftment in allogeneic recipients. They also increase hematopoietic stem cells (HSC) clonogenicity, enhance migration and homing of stem cells via secretion of cytokines/chemokines/growth factors, prevent apoptosis of stem cells and induce regulatory cells...
July 17, 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29726735/therapeutic-strategies-for-pigmented-purpuric-dermatoses-a-systematic-literature-review
#3
Kerasia-Maria Plachouri, Vaia Florou, Sophia Georgiou
BACKGROUND: Pigmented purpuric dermatoses (PPDs) is a group of diseases with distinguishing clinical characteristics, characterized mainly by purpuric skin lesions. The course of PPDs is chronic and recurrences are common. Although PPDs are considered to be benign, the associated symptoms, such as pruritus, and their cosmetic effect can be extremely distressing to patients. So far no evidence-based treatment has been found to be drastically effective in a large scale of patients. MATERIALS AND METHODS: This paper is a systematic overview of all the reported successful treatments described in the literature...
May 18, 2018: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/29724319/-clinicopathological-features-and-treatment-of-renal-impair-in-primary-sj%C3%A3-gren-syndrome
#4
Jing Wang, Li Meng Chen
Primary Sjögren syndrome,characterized by autoimmune epithelitis,is a prevalent systemic autoimmune disease involving multiple organs,among which kidney is a major target organ.Tubulointerstitial lesion is the most frequent form,involving proximal tubule,distal tubule,or collecting duct.The disease has an occult onset and may progressively develop into renal function impairment and end-stage renal disease,which can be accompanied with low-molecular-weight proteinuria,renal tubule acidosis and electrolyte disturbance...
April 28, 2018: Zhongguo Yi Xue Ke Xue Yuan Xue Bao. Acta Academiae Medicinae Sinicae
https://www.readbyqxmd.com/read/29626527/in-vitro-photodynamic-inactivation-effects-of-benzylidene-cyclopentanone-photosensitizers-on-clinical-fluconazole-resistant-candida-albicans
#5
Shaona Zhou, Zhiyuan Sun, Zulin Ye, Ying Wang, Leili Wang, Limei Xing, Haixia Qiu, Naiyan Huang, Yanping Luo, Yuxia Zhao, Ying Gu
BACKGROUND: The incidence of Candida infections has increased for various reasons, including, the more frequent use of immunosuppresants or broad-spectrum antibiotics. Photodynamic inactivation (PDI) is a promising approach for treating localized Candida infections. METHODS: The PDI efficacies of three benzylidene cyclopentanone-based (BCB) photosensitizers (PSs: P1, P2 and Y1) against three fluconazole-resistant C. albicans (cal-1, cal-2, and cal-3) and one control C...
June 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29601561/-cardiac-sarcoidosis-diagnostics-treatment-and-follow-up
#6
REVIEW
Maria Dudziak, Hanna Jankowska, Karolina Dorniak
Sarcoidosis is a generalised granulomatous disorder of unknown aetiology. Cardiac involvement may affect conduction system, myocardium, valvular apparatus and pericardium. Clinical spectrum ranges from asymptomatic involvement to sudden cardiac death. Patients with biopsy-proven extracardiac sarcoidosis should be screened for cardiac involvement (standard ECG, 24-hour Holter ECG, echocardiography) and in case of any abnormalities found on these tests, more advanced diagnostic methods should be used. Steroid treatment is still the mainstay of therapy in cardiac sarcoidosis...
March 27, 2018: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29453958/age-dependent-effects-of-dimethyl-fumarate-on-cognitive-and-neuropathological-features-in-the-streptozotocin-induced-rat-model-of-alzheimer-s-disease
#7
Irena Majkutewicz, Ewelina Kurowska, Magdalena Podlacha, Dorota Myślińska, Beata Grembecka, Jan Ruciński, Karolina Pierzynowska, Danuta Wrona
We previously demonstrated that dimethyl fumarate (DMF), an anti-oxidative and immunosuppresive compound, prevents intracerebroventricular (ICV) streptozotocin-induced disruption of spatial memory and neurodegeneration in 4-month-old rats. The present study evaluated the influence of age on DMF's therapeutic effect. Aged rats (22-months-old, n = 40) were provided rodent chow containing DMF (0.4%) and given ICV injections of streptozotocin (STZ) or vehicle (Sham) on days 2 and 4. Spatial memory was evaluated using the Morris water maze (MWM) on days 14-21...
May 1, 2018: Brain Research
https://www.readbyqxmd.com/read/29405487/history-of-psychosis-and-mania-and-outcomes-after-kidney-transplantation-a-retrospective-study
#8
Miklos Z Molnar, James D Eason, Abduzhappar Gaipov, Manish Talwar, Praveen K Potukuchi, Kiran Joglekar, Adam Remport, Zoltan Mathe, Istvan Mucsi, Marta Novak, Kamyar Kalantar-Zadeh, Csaba P Kovesdy
History of psychosis or mania, if uncontrolled, both represent relative contraindications for kidney transplantation. We examined 3680 US veterans who underwent kidney transplantation. The diagnosis of history of psychosis/mania was based on a validated algorithm. Measured confounders were used to create a propensity score-matched cohort (n = 442). Associations between pretransplantation psychosis/mania and death with functioning graft, all-cause death, graft loss, and rejection were examined in survival models and logistic regression models...
May 2018: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29306022/t-regulatory-cells-mediate-immunosuppresion-by-adenosine-in-peripheral-blood-sentinel-lymph-node-and-tils-from-melanoma-patients
#9
P Di Gennaro, G Gerlini, R Caporale, S Sestini, P Brandani, C Urso, N Pimpinelli, L Borgognoni
T regulatory cells (Tregs), involved in tumour tolerance, can generate Adenosine by CD39/CD73 surface enzymes, which identify four Tregs subsets: CD39+ CD73- nTregs, CD39+ CD73+ iTregs, CD39- CD73+ oTregs and CD39- CD73- xTregs. In melanoma patients, increased Tregs levels are detected in peripheral blood (PB), sentinel lymph node (SLN) and tumour infiltrating lymphocytes (TILs), but Adenosine role was not investigated yet. We examined total Tregs and Adenosine subsets in PB, SLN and TILs from melanoma patients (n = 32) and PB from healthy donors (HD; n = 10) by flow cytometry...
March 28, 2018: Cancer Letters
https://www.readbyqxmd.com/read/29291200/human-herpesvirus-8-positive-iatrogenic-kaposi-s-sarcoma-in-the-setting-of-refractory-ulcerative-colitis
#10
Erica Duh, Sean Fine
Although Kaposi sarcoma (KS) has been more traditionally considered an AIDS-defining illness, it may also be seen in individuals on immunosuppresive therapy. We report a case of a patient who presented to the hospital in the setting of increasingly refractory ulcerative colitis. Computed tomography scan of the abdomen was consistent with sigmoid diverticulititis and blood cultures were positive for Klebsiella. After a course of antibiotics with resolution of infection, a colonoscopy was performed to evaluate his diverticulitis and incidentally revealed a new rectal tumor...
December 16, 2017: World Journal of Clinical Cases
https://www.readbyqxmd.com/read/29082050/a-case-of-rituximab-induced-necrotizing-fasciitis-and-a-review-of-the-literature
#11
Abdullateef Abdulkareem, Ryan S D'Souza, Oluwaseun Shogbesan, Anthony Donato
Necrotizing fasciitis is a fulminant soft tissue infection characterized by rapid progression and high mortality. Rituximab is a generally well-tolerated immunosuppresive medication used for B-cell malignancies and some rheumatological disorders. We report a case of a 69-year-old male with chronic lymphocytic leukemia who suffered necrotizing fasciitis of his left lower extremity secondary to Clostridium septicum 7 weeks after treatment with rituximab. Despite immediate intravenous antimicrobial therapy and emergent fasciotomy with extensive debridement, his hospital course was complicated by septic shock and he required an above-the-knee amputation...
2017: Case Reports in Hematology
https://www.readbyqxmd.com/read/28978142/glioblastoma-progression-is-assisted-by-induction-of-immunosuppressive-function-of-pericytes-through-interaction-with-tumor-cells
#12
Rut Valdor, David García-Bernal, Carlos Bueno, Mónica Ródenas, José M Moraleda, Fernando Macian, Salvador Martínez
The establishment of immune tolerance during Glioblastoma Multiforme (GBM) progression, is characterized by high levels expression of anti-inflammatory cytokines, which suppress the function of tumor assocciated myeloid cells, and the activation and expansion of tumor antigen specific T cells. However, the mechanisms underlying the failed anti-tumor immune response around the blood vessels during GBM, are poorly understood. The consequences of possible interactions between cancer cells and the perivascular compartment might affect the tumor growth...
September 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28948913/natural-mismatch-repair-mutations-mediate-phenotypic-diversity-and-drug-resistance-in-cryptococcus-deuterogattii
#13
R Blake Billmyre, Shelly Applen Clancey, Joseph Heitman
Pathogenic microbes confront an evolutionary conflict between the pressure to maintain genome stability and the need to adapt to mounting external stresses. Bacteria often respond with elevated mutation rates, but little evidence exists of stable eukaryotic hypermutators in nature. Whole genome resequencing of the human fungal pathogen Cryptococcus deuterogattii identified an outbreak lineage characterized by a nonsense mutation in the mismatch repair component MSH2. This defect results in a moderate mutation rate increase in typical genes, and a larger increase in genes containing homopolymer runs...
September 26, 2017: ELife
https://www.readbyqxmd.com/read/28786066/regulatory-t-cell-activity-in-immunosuppresive-mice-model-of-pseudomonas-aeruginosa-pneumonia
#14
Jun-Lu Li, Ting-Sang Chen, Cong-Cong Yuan, Guo-Qiang Zhao, Min Xu, Xiao-Yan Li, Jie Cao, Li-Hua Xing
Pseudomonas aeruginosa (PA) pneumonia is a refractory, even lethal complication in immunosuppressive individuals and immune disturbances may promote the pathological process. We aimed to investigate the regulatory T (Treg) cell activity in an immunosuppressive mice model of PA pneumonia by estimating levels of main transcription factor and the main effector of Treg cells, i.e., Forkhead box protein 3 (FOXP3) and interleukine-10 (IL-10). Seventy-two BALB/c mice were divided into four groups randomly: control (A), PA pneumonia (B), immunosuppression (C) and immunosuppression with PA pneumonia (D)...
August 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28710997/dynamics-of-torque-teno-virus-plasma-dnaemia-in-allogeneic-stem-cell-transplant-recipients
#15
Eliseo Albert, Carlos Solano, Tania Pascual, Ignacio Torres, Lisa Macera, Daniele Focosi, Fabrizio Maggi, Estela Giménez, Paula Amat, David Navarro
BACKGROUND: Torque Teno virus (TTV) plasma DNA load directly correlate with the level of immunosuppresion in different clinical settings. It is uncertain whether this may be the case in allogeneic hematopoietic stem cell transplant recipients (allo-HSCT). OBJECTIVES: We characterized the dynamics of TTV DNAemia in patients undergoing T-cell replete allo-SCT. STUDY DESIGN: Retrospective single-center observational study including 72 allo-HSCT patients...
September 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
https://www.readbyqxmd.com/read/28616380/rare-case-of-pulmonary-histoplasmosis-complicated-with-bronchocentric-granulomatosis-in-a-non-endemic-area
#16
Evanthia Botsa, Ioanna Thanou, Stamatina Kabanarou, Loukas Thanos
BACKGROUND: Pulmonary histoplasmosis is a fungal infection caused by histoplasma capsulatum, rarely diagnosed in non endemic areas and/or immunocompromised patients. Complication of pulmonary histoplasmosis with bronchocentric granulomatosis is extremely rare. CASE REPORT: A 48-year-old man with prolonged fever and nausea was admitted to our hospital. Clinical examination revealed pathological auscultatory sounds to the left lung. Computed tomography was performed and revealed a large solid mass of the left upper lobe, limited pleural and pericardial effusion and calcified lymphadenopathy of mediastinum...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28588752/inducible-protein-10-as-a-predictive-marker-of-antiviral-hepatitis-c-treatment-a-systematic-review
#17
REVIEW
Bastian Neesgaard, Morten Ruhwald, Nina Weis
AIM: To investigate interferon-γ-inducible protein-10's (IP-10) potential to anticipate rapid (RVR)- and sustained virological responses (SVR) to chronic hepatitis C (CHC) treatment. METHODS: We included case series examining RVR or SVR in relation to 24 or 48 wk treatment for CHC, in patients treatment free for at least six months, with genotype 1 or 4, and in relation to 24 wk treatment for genotype 2 and 3, with pegylated interferon in combination with ribavirin...
May 18, 2017: World Journal of Hepatology
https://www.readbyqxmd.com/read/28480396/immunosuppresive-effects-of-the-methanolic-extract-of-chrysophyllum-cainito-leaves-on-macrophage-functions
#18
Víctor Ermilo Arana-Argáez, Ivan Chan-Zapata, Jaqueline Canul-Canche, Karla Fernández-Martín, Zhelmy Martín-Quintal, Julio Cesar Torres-Romero, Tania Isolina Coral-Martínez, Julio Cesar Lara-Riegos, Mario Alberto Ramírez-Camacho
BACKGROUND: The aim of this work was to evaluate the immunomodulatory effect of the methanol extract (MeOH) from Chrysophyllum cainito leaves on the MΦs functions. MATERIAL AND METHODS: Peritoneal murine MΦs isolated from Balb/c mice were treated with the MeOH extract and stimulated with LPS. The effect on the phagocytosis was evaluated by flow cytometry assay. The nitric oxide (NO) and hydrogen peroxide (H2O2) production was measured by the Griess reagent and phenol red reaction, respectively...
2017: African Journal of Traditional, Complementary, and Alternative Medicines: AJTCAM
https://www.readbyqxmd.com/read/28384865/lactobacillus-coryniformis-causing-pulmonary-infection-in-a-patient-with-metastatic-small-cell-carcinoma-case-report-and-review-of-literature-on-lactobacillus-pleuro-pulmonary-infections
#19
REVIEW
Priya Datta, Varsha Gupta, Gursimran Kaur Mohi, Jagdish Chander, Ashok Kumar Janmeja
Lactobacilli are normal commensals of the gastrointestinal and female genital tract. Due to its low virulence these bacteria are known to cause opportunistic infections. They cause mostly bacteraemia with or without endocarditis and rarely cause pleuro-pulmonary infection. We report a case of Lactobacillus coryniformis pleuro-pulmonary infection and review 14 previously reported cases of lactobacilli causing pleuro-pulmonary infections. Our patient had small cell carcinoma with metastasis. All the 14 cases had pre-existing risk factors like immunosuppresion, cancer or chronic disease...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28132769/immunosuppression-in-sheep-induced-by-cyclophosphamide-bluetongue-virus-and-their-combination-effect-on-clinical-reaction-and-viremia
#20
Evangelia Chatzinasiou, Serafeim C Chaintoutis, Chrysostomos I Dovas, Maria Papanastassopoulou, Orestis Papadopoulos
The main purpose of this work was to establish an experimental model for immunosuppression in sheep, and evaluate its possible effects on bluetongue viremia. Animals were allocated in 4 groups: Cy (cyclophosphamide), BT (bluetongue), CyBT (combined Cy and BT) and Co (control), and underwent clinical evaluations, virological testing, peripheral blood immunophenotyping and determination of antiviral humoral immune responses. Intravenous administration of cyclophosphamide (37.5 mg/kg body weight) resulted in immunosuppresion induction, as significant drops were observed in blood leukocytes and lymphocyte subset counts (CD2(+), CD4(+), CD8(+), CD19(+)), lasting 3-10 days after its administration...
March 2017: Microbial Pathogenesis
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