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https://www.readbyqxmd.com/read/28646647/successful-maintenance-of-key-physiological-parameters-in-preterm-lambs-treated-with-ex%C3%A2-vivo-uterine-environment-therapy-for-a-period-of-1-week
#1
Haruo Usuda, Shimpei Watanabe, Yuichiro Miura, Masatoshi Saito, Gabrielle C Musk, Judith Rittenschober-Böhm, Hideyuki Ikeda, Shinichi Sato, Takushi Hanita, Tadashi Matsuda, Alan H Jobe, John P Newnham, Sarah J Stock, Matthew W Kemp
BACKGROUND: Extremely preterm infants born at the border of viability (22-24 weeks' gestation) have high rates of death and lasting disability. Ex vivo uterine environment therapy is an experimental neonatal intensive care strategy that provides gas exchange using parallel membranous oxygenators connected to the umbilical vessels, sparing the extremely preterm cardiopulmonary system from ventilation-derived injury. OBJECTIVE: In this study, we aimed to refine our ex vivo uterine environment therapy platform to eliminate fetal infection and inflammation, while simultaneously extending the duration of hemodynamically stable ex vivo uterine environment therapy to 1 week...
June 20, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28646487/immunotoxic-effects-of-thymus-in-mice-following-exposure-to-nanoparticulate-tio2
#2
Fashui Hong, Yaoming Zhou, Yingjun Zhou, Ling Wang
Titanium dioxide nanoparticles (TiO2 NPs) have been extensively used in industry, medicine, and daily life, and have shown potential toxic effects for animals or humans. We noted that the effects of TiO2 NPs on the immune system and its mechanism of action in animals or humans have not been elucidated. Thus, mice were exposed to the TiO2 NPs (0, 1.25, 2.5, or 5 mg kg(-1) body weight) for 9 consecutive months. Exposure to TiO2 NPs was accumulated in the thymus, leading to a decrease in body weight and increases in the weight of the thymus or thymus indices...
June 24, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28646302/t-regulatory-cells-exhibit-a-biphasic-response-to-prolonged-endurance-exercise-in-humans
#3
Tom Clifford, Matthew J Wood, Philip Stocks, Glyn Howatson, Emma J Stevenson, Catharien M U Hilkens
PURPOSE: T-regulatory cells (Tregs) are a sub-population of lymphocytes that act to suppress aberrant immune responses. We investigated changes in the numbers of naïve and terminally differentiated Tregs in the peripheral blood to establish their role in the immuno-suppressive response to prolonged exercise. METHODS: Blood was drawn from seventeen experienced runners (age 40 ± 12 years; height 1.75 ± 0.08 m; mass 71.4 ± 10.8 kg) before, ~1 h after (POST-1h), and on the day following the marathon (POST-1d)...
June 23, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28642841/strain-and-dose-dependent-reduction-of-toxoplasma-gondii-burden-in-pigs-is-associated-with-interferon-gamma-production-by-cd8-lymphocytes-in-a-heterologous-challenge-model
#4
Malgorzata Jennes, Stéphane De Craeye, Bert Devriendt, Katelijne Dierick, Pierre Dorny, Eric Cox
Toxoplasma gondii is a worldwide prevalent parasite of humans and animals. The global infection burden exceeds yearly one million disability-adjusted life years (DALY's) in infected individuals. Therefore, effective preventive measures should be taken to decrease the risk of infection in humans. Although human toxoplasmosis is predominantly foodborne by ingestion of tissue cysts in meat from domestic animals such as pigs, the incidence risk is difficult to estimate due to the lack of screening of animals for infection and insights in location and persistence of the parasite in the tissues...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28641651/-effect-of-infusion-of-recipient-spleen-cells-at-different-time-after-murine-haploidentical-hematopoietic-stem-cell-transplantation-on-graft-versus-host-disease
#5
Jun-Hui Wang, Lei Deng, Lu Wang, Chen Liang, Yi Wang, Tie-Qiang Liu, Shan Huang, Ya-Jing Huang, Bo Cai, Zheng Dong, Hong-Li Zuo, Qi-Yun Sun, Jian-Hui Qiao, Chang-Lin Yu, Kai-Xun Hu, Hui-Sheng Ai, Mei Guo
OBJECTIVE: To explore the effect of infusing G-CSF mobilized recipient spleen cells at different time after haploidentical stem cell transplantation(HSCT) on graft-versus-host disease (GVHD) in mice and its possible mechanism. METHODS: Forty mice after HSCT were randomly divided into 4 groups (n=10): GVHD positive control group (control group), 1st d recipient cell infusion group after transplantation (+1 d group), 4th d recipient cell infusion group after transplantation(+4 d group), 7th d recipient cell infusion group after transplantation(+7 d group)...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28640942/polyfunctional-response-by-immtac-imcgp100-redirected-cd8-and-cd4-t-cells
#6
Caroline Boudousquie, Giovanna Bossi, Jacob M Hurst, Karolina A Rygiel, Bent K Jakobsen, Namir J Hassan
The success of immune system based cancer therapies depends on a broad immune response engaging a range of effector cells and mechanisms. Immune mobilising monoclonal TCRs against cancer (ImmTAC(™) molecules, fusion proteins consisting of a soluble, affinity enhanced TCR and an anti-CD3 scFv Ab) were previously shown to redirect CD8(+) and CD4(+) T cells against tumours. Here we present evidence that IMCgp100 (ImmTAC recognising a peptide derived from the melanoma-specific protein, gp100, presented by HLA-A*0201) efficiently redirects and activates effector and memory cells from both CD8(+) and CD4(+) repertoires...
June 22, 2017: Immunology
https://www.readbyqxmd.com/read/28639033/functional-restoration-of-cd56-bright-nk-cells-facilitates-immune-control-via-il-15-and-nkg2d-in-patients-under-antiviral-treatment-for-chronic-hepatitis-b
#7
Tao Chen, Lin Zhu, Aichao Shi, Lin Ding, Xiaoping Zhang, Zhenmin Tan, Wei Guo, Weiming Yan, Meifang Han, Jidong Jia, Xiaoping Luo, Detlef Schuppan, Qin Ning
BACKGROUND AND AIMS: Hepatitis B virus (HBV) is intrinsically immunogenic, with long-lasting immune control in many patients. However, the mechanisms and key cell types underlying effective immune control are incompletely understood. METHODS: We studied the restoration of natural killer (NK) cell numbers and function post antiviral treatment in 52 hepatitis B e antigen (HBeAg)-positive chronic hepatitis B (CHB) patients who received telbivudine (LdT) for 48 weeks...
June 20, 2017: Hepatology International
https://www.readbyqxmd.com/read/28638740/tumor-cells-pd-l1-expression-as-a-favorable-prognosis-factor-in-nasopharyngeal-carcinoma-patients-with-pre-existing-intratumor-infiltrating-lymphocytes
#8
Qian Zhu, Mu-Yan Cai, Chang-Long Chen, Hao Hu, Huan-Xin Lin, Min Li, De-Sheng Weng, Jing-Jing Zhao, Ling Guo, Jian-Chuan Xia
Programmed death ligand 1 (PD-L1) expression represents a mechanism of immune escape by inhibiting T cell immunity. This study systematically evaluated the expression of PD-L1, spatial distribution of CD3(+) immune cells and the relationship of both factors to survival in nasopharyngeal carcinoma (NPC) patients. A total of 209 NPC patients treated between 1991 and 2000 were included. Pairs of TMAs were immunohistochemically stained with PD-L1 and CD3. Survival analysis was evaluated according to PD-L1 status and the spatial distribution of CD3(+) immune cells in the primary lesion microenvironment...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28637803/protein-malnutrition-alters-tryptophan-and-angiotensin-converting-enzyme-2-homeostasis-and-adaptive-immune-responses-in-human-rotavirus-infected-gnotobiotic-pigs-transplanted-with-human-infant-fecal-microbiota
#9
David D Fischer, Sukumar Kandasamy, Francine C Paim, Stephanie N Langel, Moyasar A Alhamo, Lulu Shao, Juliet Chepngeno, Ayako Miyazaki, Huang-Chi Huang, Anand Kumar, Gireesh Rajashekara, Linda J Saif, Anastasia N Vlasova
Malnutrition leads to increased morbidity and is evident in almost half of all deaths in children under the age of five. Mortality due to rotavirus diarrhea is common in developing countries where malnutrition is prevalent; however, the relationship between malnutrition and rotavirus infection remains unclear. In this study, gnotobiotic pigs transplanted with the fecal microbiota of a healthy 2-month-old infant were fed protein-sufficient or -deficient diets with infected with virulent human rotavirus. After human rotavirus infection, protein deficient pigs had decreased human rotavirus antibody titers and total IgA concentrations, systemic T helper (CD3+CD4+) and cytotoxic T (CD3+CD8+) lymphocyte frequencies and serum tryptophan and angiotensin I converting enzyme 2...
June 21, 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28635405/effects-of-microwave-ablation-on-t-cell-subsets-and-cytokines-of-patients-with-hepatocellular-carcinoma
#10
Haiwen Zhang, Xiaowei Hou, Hongjian Cai, Xingjun Zhuang
OBJECTIVES: To investigate the effects of microwave ablation on T-lymphocyte subsets and cytokines in patients with hepatocellular carcinoma. MATERIAL AND METHODS: Peripheral blood was collected from 45 patients with hepatocellular carcinoma treated by microwave ablation before treatment, one week and one month after treatment. T cells (CD3+, CD4+ and CD8+ cells), CD4+ CD25+ Tregs, and CD16+ CD56+ NK cells were analyzed by flow cytometry. Levels of cytokines (IL-2, IFN-γ, TNF-α, IL-12, IL-4, IL-6, IL-8, and IL-10) were determined by a Luminex 200 analyzer...
February 20, 2017: Minimally Invasive Therapy & Allied Technologies: MITAT
https://www.readbyqxmd.com/read/28634161/oncolytic-adenovirus-expressing-bispecific-antibody-targets-t-cell-cytotoxicity-in-cancer-biopsies
#11
Joshua D Freedman, Joachim Hagel, Eleanor M Scott, Ioannis Psallidas, Avinash Gupta, Laura Spiers, Paul Miller, Nikolaos Kanellakis, Rebecca Ashfield, Kerry D Fisher, Margaret R Duffy, Leonard W Seymour
Oncolytic viruses exploit the cancer cell phenotype to complete their lytic life cycle, releasing progeny virus to infect nearby cells and repeat the process. We modified the oncolytic group B adenovirus EnAdenotucirev (EnAd) to express a bispecific single-chain antibody, secreted from infected tumour cells into the microenvironment. This bispecific T-cell engager (BiTE) binds to EpCAM on target cells and cross-links them to CD3 on T cells, leading to clustering and activation of both CD4 and CD8 T cells. BiTE transcription can be controlled by the virus major late promoter, limiting expression to cancer cells that are permissive for virus replication...
June 20, 2017: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/28634120/highly-reproducible-improved-label-free-quantitative-analysis-of-cellular-phosphoproteome-by-optimization-of-lc-ms-ms-gradient-and-analytical-column-construction
#12
Nagib Ahsan, Judson Belmont, Zhuo Chen, James G Clifton, Arthur R Salomon
Expanding the sequencing depth of the peptides with a statistically significant quantitative change derived from a biological stimulation is critical. Here we demonstrate that optimization of LC gradient and analytical column construction can reveal over 30,000 unique peptides and 23,000 phosphopeptides at high confidence. The quantitative reproducibility of different analytical workflows was evaluated by comparing the phosphoproteome of CD3/4 stimulated and unstimulated T-cells as a model system. A fritless, 50cm-long column packed with 1...
June 17, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28632999/long-noncoding-rna-lnc-sox5-modulates-crc-tumorigenesis-by-unbalancing-tumor-microenvironment
#13
Wu Kaiming, Zhenxian Zhao, Kuanzhi Liu, Jian Zhang, Guanghua Li, Liang Wang
Long non-coding RNAs (LncRNAs) have been recently regarded as systemic regulators in multiple biological processes including tumorigenesis. In this study, we observed the expression of lncRNA lnc-sox5 was significantly increased in colorectal cancer (CRC). Despite the CRC cell growth, cell cycle and cell apoptosis was not affected by lnc-sox5 knock-down, lnc-sox5 knock-down suppressed CRC cell migration and invasion. In addition, xenograft animal model suggested that lnc-sox5 knock-down significantly suppressed the CRC tumorigenesis...
June 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28632936/peritumoral-cuffing-by-t-cell-tumor-infiltrating-lymphocytes-distinguishes-hpv-related-oropharyngeal-squamous-cell-carcinoma-from-oral-cavity-squamous-cell-carcinoma
#14
Kate Poropatich, David Hernandez, Joel Fontanarosa, Koshonna Brown, Gayle Woloschak, Ajit Paintal, Kirtee Raparia, Sandeep Samant
BACKGROUND: It is unclear why human papillomavirus (HPV)-related head and neck squamous cell carcinoma (HNSCC) has improved clinical behavior compared to HPV-negative HNSCC. We sought to better characterize the immune microenvironment of tongue cancers by examining the CD3 and CD8 TIL pattern in HPV-positive and -negative tumors. METHODS: Histologic sections from 40 oral tongue and oropharyngeal cases were analyzed (n= 21 HPV DNA-positive, n= 19 HPV DNA-negative)...
June 20, 2017: Journal of Oral Pathology & Medicine
https://www.readbyqxmd.com/read/28631654/composite-lymphoma-with-coexistence-of-diffuse-large-b-cell-lymphoma-and-anaplastic-large-cell-lymphoma-diagnostic-pitfalls
#15
Meyyappa Devan Rajagopal, Rakhee Kar, Debdatta Basu, Sunu Lazar Cyriac
Composite lymphoma is a rare tumor composed of two or more distinct lymphomas in the same topographic site or tissue. Several combinations of B-cell non-Hodgkin lymphoma (NHL), T-cell NHL, and Hodgkin lymphoma can occur with different prognoses and treatments. The coexistence of a B-cell NHL and a T-cell NHL is unusual. The exact etiology of composite lymphoma is unknown; however, few mechanisms have been proposed to explain its pathogenesis. The chemotherapeutic protocols are heterogeneous but are essentially targeted against the high-grade component...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631651/follicular-variant-of-peripheral-t-cell-lymphoma
#16
Archana Lakshmanan, S Annapurneswari, Sheila Nair
Globally, peripheral T-cell lymphomas (PTCLs) constitute about 12% of all non-Hodgkin lymphomas, of which the unspecified category is the most common subtype (30%). Mostly, the unspecified category shows a diffuse pattern of involvement in the lymph nodes. However, rarely, they may show a follicular/nodular pattern mimicking a follicular lymphoma. We report a case of a follicular variant of PTCL, not otherwise specified. This case displayed a striking nodular/follicular pattern with an admixture of small (centrocyte-like) and large (centroblast-like) cells, thus mimicking a follicular lymphoma...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28631630/diagnostic-value-of-immunohistochemistry-staining-of-bcl-2-cd34-cd20-and-cd3-for-distinction-between-discoid-lupus-erythematosus-and-lichen-planus-in-the-skin
#17
Mazaher Ramezani, Bita-Sadat Hashemi, Sedigheh Khazaei, Mansour Rezaei, Ali Ebrahimi, Masoud Sadeghi
BACKGROUND: Cluster of differentiation (CD) markers is a classification system for monoclonal antibodies against cell surface molecules on leukocytes and antigens from other cells. AIMS: The aim of this study is to evaluate immunohistochemical markers in patients with discoid lupus erythematosus (DLE) and lichen planus (LP) and correlation of these markers in two groups and with the normal group in the West of Iran. SETTINGS AND DESIGN: Analytical cross-sectional study...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28630386/low-17%C3%AE-estradiol-levels-are-better-inducers-of-regulatory-conditioned-t-cells-in-vitro
#18
Ramina Fatemi, Ebrahim Mirzadegan, Zohreh Vahedian, Amir Hassan Zarnani, Mahmood Jeddi-Tehrani, Farah Idali
BACKGROUND: 17β-estradiol (E2) has been known to modulate immune response. Recent studies indicate that E2 at pregnancy level plays a role in regulating T cell response. OBJECTIVE: To investigate the optimum dose of E2 (from 10-9 to 10-7 M) in mediating the generation of regulatory T cells (Tregs), using naive human CD4+ T cells from healthy women. METHODS: Naive peripheral T cells were purified and conditioned with soluble anti-CD28 in anti-CD3-coated plates in the presence or absence of E2...
June 2017: Iranian Journal of Immunology: IJI
https://www.readbyqxmd.com/read/28629732/impact-of-granulocyte-contamination-on-pbmc-integrity-of-shipped-blood-samples-implications-for-multi-center-studies-monitoring-regulatory-t-cells
#19
Charuta Agashe, David Chiang, Alexander Grishin, Madhan Masilamani, Stacie M Jones, Robert A Wood, Scott H Sicherer, A Wesley Burks, Donald Y M Leung, Peter Dawson, Hugh A Sampson, M Cecilia Berin
In centralized immune monitoring for a multi-center allergen immunotherapy trial, we observed frequent loss of CD4(+) T cell integrity following staining of cultured PBMCs with our regulatory T cell flow cytometry panel. Samples were marked by a loss of total cellular events, altered scatter properties, and reduced CD3(+)CD4(+) events. This occurred only in samples that were stained with Foxp3 and were therefore treated with Foxp3 fixation-permeabilization buffer. We identified granulocyte contamination in samples associated with a loss of integrity, and went on to test the impact of granulocyte depletion on day-old blood samples...
June 16, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28628777/effects-of-adipose-stem-cell-sheets-on-colon-anastomotic-leakage-in-an-experimental-model-proof-of-principle
#20
Panithi Sukho, Geesien S A Boersema, Abigael Cohen, Nicole Kops, Johan F Lange, Jolle Kirpensteijn, Jan Willem Hesselink, Yvonne M Bastiaansen-Jenniskens, Femke Verseijden
The most dreaded complication of colorectal surgery is anastomotic leakage. Adipose tissue-derived stem cell sheets (ASC sheets) prepared from temperature-responsive culture surfaces can be easily transplanted onto tissues. These sheets are proposed to improve cell transplant efficiency and enhance wound healing. The aim of this study was to investigate whether application of ASC sheets could prevent leakage of sutured colorectal anastomoses. Insufficient suturing of colorectal anastomoses was performed in Wistar rats to create a colorectal anastomotic leakage model...
June 9, 2017: Biomaterials
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