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Follicle T cell

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https://www.readbyqxmd.com/read/27920778/the-dynamics-of-t-and-b-cells-in-lymph-node-during-chronic-hiv-infection-tfh-and-hiv-unhappy-dance-partners
#1
REVIEW
Jung Joo Hong, Kyu-Tae Chang, Francois Villinger
Although the dynamics of germinal center (GC) formation, follicular helper T (TFH) cell recruitment to B cell follicles within lymphoid organs, and changes of lymphoid tissue architecture in HIV/SIV infection have been documented, the underlying immunopathology remains unclear. Here, we summarize what is known regarding the kinetics of TFH cells and GC B cells during the course of infection as well as the potential immunopathological features associated with structural changes in the lymphoid compartment. This review also explores the implications of cell dynamics in the formation and maintenance of viral reservoirs in hyperplastic follicles of secondary lymphoid organs before and after viral suppressive antiretroviral therapy...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27904857/t-cadherin-expression-in-the-epidermis-and-adnexal-structures-of-normal-skin
#2
Stanislaw Buechner, Paul Erne, Therese J Resink
BACKGROUND: T-cadherin is an atypical glycosylphosphatidylinositol-anchored member of the cadherin superfamily of adhesion molecules. The role of T-cadherin in biology of the skin is poorly understood. Expression of T-cadherin in basal keratinocytes and dermal blood vessels of the healthy epidermis has been demonstrated, but studies on expression in skin appendages are rare. METHODS: We conducted an immunohistochemical analysis of T-cadherin expression in the epidermis and adnexal structures of normal skin...
September 2016: Dermatopathology (Basel, Switzerland)
https://www.readbyqxmd.com/read/27903524/graft-versus-host-disease-targets-ovary-and-causes-female-infertility-in-mice
#3
Sonoko Shimoji, Daigo Hashimoto, Hidetsugu Tsujigiwa, Kohta Miyawaki, Koji Kato, Shuichiro Takahashi, Reiki Ogasawara, Takashi Jiromaru, Hiromi Iwasaki, Toshihiro Miyamoto, Koichi Akashi, Takanori Teshima
Infertility associated with ovarian failure is a serious late complication for female survivors of allogeneic hematopoietic stem cell transplantation (SCT). While the role of pretransplant conditioning regimen has been well appreciated, increasing application of reduced-intensity conditioning facilitated us to revisit the other factors possibly affecting ovarian function after allogeneic SCT. We have addressed whether donor T-cell mediated graft-versus-host disease (GVHD) could be causally related to female infertility in mice...
November 30, 2016: Blood
https://www.readbyqxmd.com/read/27892498/sensitization-with-vaccinia-virus-encoding-h5n1-hemagglutinin-restores-immune-potential-against-h5n1-influenza-virus
#4
Fumihiko Yasui, Yasushi Itoh, Ai Ikejiri, Masahiro Kitabatake, Nobuo Sakaguchi, Keisuke Munekata, Shintaro Shichinohe, Yukiko Hayashi, Hirohito Ishigaki, Misako Nakayama, Yoshihiro Sakoda, Hiroshi Kida, Kazumasa Ogasawara, Michinori Kohara
H5N1 highly pathogenic avian influenza (H5N1 HPAI) virus causes elevated mortality compared with seasonal influenza viruses like H1N1 pandemic influenza (H1N1 pdm) virus. We identified a mechanism associated with the severe symptoms seen with H5N1 HPAI virus infection. H5N1 HPAI virus infection induced a decrease of dendritic cell number in the splenic extrafollicular T-cell zone and impaired formation of the outer layers of B-cell follicles, resulting in insufficient levels of antibody production after infection...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27877076/cardiomyogenic-differentiation-of-human-dental-follicle-derived-stem-cells-by-suberoylanilide-hydroxamic-acid-and-their-in-vivo-homing-property
#5
Iel-Yong Sung, Han-Na Son, Imran Ullah, Dinesh Bharti, Ju-Mi Park, Yeong-Cheol Cho, June-Ho Byun, Young-Hoon Kang, Su-Jin Sung, Jong-Woo Kim, Gyu-Jin Rho, Bong-Wook Park
The purpose of the present study was to investigate the in vitro cardiomyogenic differentiation potential of human dental follicle-derived stem cells (DFCs) under the influence of suberoylanilide hydroxamic acid (SAHA), a member of the histone deacetylase inhibitor family, and analyze the in vivo homing capacity of induced cardiomyocytes (iCMs) when transplanted systemically. DFCs from extracted wisdom teeth showed mesenchymal stem cell (MSC) characteristics such as plate adherent growing, expression of MSC markers (CD44, CD90, and CD105), and mesenchymal lineage-specific differentiation potential...
2016: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/27876080/effect-of-testosterone-on-the-connexin37-of-sexual-mature-mouse-cumulus-oocyte-complex
#6
Yangyang Zhang, Yang Xu, Yanrong Kuai, Sheng Wang, Qing Xue, Jing Shang
BACKGROUND: Recent researches demonstrate that pre-treatment with androgen could increase retrieved oocytes number and clinical pregnancy rate in poor ovarian response (POR) patients. In view of gap junction intercellular communication (GJIC) is important for follicular growth, and androgen plays an important role in improving prognosis of POR patients, we speculate that androgen can increase the expression of connexin in follicle cells, and improve ovarian microenvironment, thus can promote ovarian response...
November 23, 2016: Journal of Ovarian Research
https://www.readbyqxmd.com/read/27852854/a-novel-rabies-vaccine-expressing-cxcl13-enhances-humoral-immunity-by-recruiting-both-t-follicular-helper-and-germinal-center-b-cells
#7
Zhao Wang, Mingming Li, Ming Zhou, Yajing Zhang, Jie Yang, Yandi Cao, Kunlun Wang, Min Cui, Huanchun Chen, Zhen F Fu, Ling Zhao
: Rabies still remains a public health threat in most parts of the world, and approximately 99% of the cases are transmitted by dogs. There is an urgent need to develop an efficacious and affordable vaccine to control canine-transmitted rabies in developing countries. Our previous studies demonstrate that overexpression of chemokines/cytokines such as CCL-3 (MIP-1α) and GM-CSF can enhance the immunogenicity of rabies vaccines. In the present study, the chemokine CXCL13 was inserted into the genome of the recombinant rabies virus (rRABV) strain LBNSE, and the effect of the chemokine CXCL13 on the immunogenicity of the RABV was investigated...
November 16, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27807889/viability-and-growth-of-feline-preantral-follicles-in-vitro-cultured-with-insulin-growth-factor-and-epidermal-growth-factor-supplemented-medium
#8
A E Alves, L C Padilha-Nakaghi, E A Pires-Butler, M Apparicio, Nam Silva, T F Motheo, Wrr Vicente, G C Luvoni
In vitro culture of ovarian preantral follicles has emerged as a reproductive technology aimed at obtaining large amount of oocytes for in vitro embryo production. The addition of growth factors (GF) in the in vitro culture of preantral follicles of different species has provided superior results of follicular development, antrum formation and proliferation of granulosa cells. However, there are only few reports regarding the use of these factors on feline preantral follicle in vitro culture. Thus, the aim of this study was to investigate the effect of a combination of IGF-1 and EGF on in vitro viability and growth of preantral follicles and enclosed oocytes collected from domestic cats...
November 3, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27802065/a-review-on-laser-and-light-based-therapies-for-alopecia-areata
#9
Stephanie Mlacker, Adam Souhail Aldahan, Brian James Simmons, Vidhi Shah, Colin Andrew McNamara, Sahal Samarkandy, Keyvan Nouri
Alopecia areata is a form of non-scarring alopecia that results from a hyperactive immune response of T cells against hair follicles. Many patients with visible hair loss experience psychological and emotional distress, as a result of their cosmetic disfigurement, and frequently seek treatment. However, existing treatment methods, such as corticosteroids, topical irritants, sensitizing agents, immunosuppressants, and psoralen plus ultraviolet light A may result in various adverse effects and often lack efficacy...
November 1, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27799872/potential-of-cells-and-cytokines-chemokines-to-regulate-tertiary-lymphoid-structures-in-human-diseases
#10
REVIEW
Feifeng Jing, Eun Young Choi
Tertiary lymphoid structures (TLS) are ectopic lymphoid tissues involved in chronic inflammation, autoimmune diseases, transplant rejection and cancer. They exhibit almost all the characteristics of secondary lymphoid organs (SLO), which are associated with adaptive immune responses; as such, they contain organized B-cell follicles with germinal centers, distinct areas containing T cells and dendritic cells, high endothelial venules, and lymphatics. In this review, we briefly describe the formation of SLO, and describe the cellular subsets and molecular cues involved in the formation and maintenance of TLS...
October 2016: Immune Network
https://www.readbyqxmd.com/read/27795451/3-deoxysappanchalcone-promotes-proliferation-of-human-hair-follicle-dermal-papilla-cells-and-hair-growth-in-c57bl-6-mice-by-modulating-wnt-%C3%AE-catenin-and-stat-signaling
#11
Young Eun Kim, Hyung Chul Choi, In-Chul Lee, Dong Yeon Yuk, Hyosung Lee, Bu Young Choi
3-Deoxysappanchalcone (3-DSC) has been reported to possess anti-allergic, antiviral, anti-inflammatory and antioxidant activities. In the present study, we investigated the effects of 3-DSC on the proliferation of human hair follicle dermal papilla cells (HDPCs) and mouse hair growth in vivo. A real-time cell analyzer system, luciferase assay, Western blot and real-time polymerase chain reaction (PCR) were employed to measure the biochemical changes occurring in HDPCs in response to 3-DSC treatment. The effect of 3-DSC on hair growth in C57BL/6 mice was also examined...
November 1, 2016: Biomolecules & Therapeutics
https://www.readbyqxmd.com/read/27781275/follicle-cell-processes-a-shark-thing
#12
M Dunbar, C Onuora, S Morgan, F E Stone, T M Huckaba, I R Davenport
Follicle cell processes (FCP) are identified in two species of carcharhinid shark (Selachii) but are absent in the little skate Leucoraja erinacea (Batoidea). This suggests that FCPs are either a unique structure that evolved in selachians or were lost by the batoids after their divergence, some 280 mya. The presence of FCPs in the selachians would be consistent with the evolution of large oocytes in this group of animals.
October 25, 2016: Journal of Fish Biology
https://www.readbyqxmd.com/read/27777573/artery-tertiary-lymphoid-organs-powerhouses-of-atherosclerosis-immunity
#13
Changjun Yin, Sarajo Kumar Mohanta, Prasad Srikakulapu, Christian Weber, Andreas J R Habenicht
Artery tertiary lymphoid organs (ATLOs) are atherosclerosis-associated lymphoid aggregates with varying degrees of complexity ranging from small T/B-cell clusters to well-structured lymph node-like though unencapsulated lymphoid tissues. ATLOs arise in the connective tissue that surrounds diseased arteries, i.e., the adventitia. ATLOs have been identified in aged atherosclerosis-prone hyperlipidemic apolipoprotein E-deficient (ApoE(-/-)) mice: they are organized into distinct immune cell compartments, including separate T-cell areas, activated B-cell follicles, and plasma cell niches...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27774658/the-localization-of-kisspeptin-and-kisspeptin-receptor-in-the-canine-ovary-during-different-stages-of-the-reproductive-cycle
#14
M E Cielesh, B M McGrath, C J Scott, S T Norman, C P Stephen
Kisspeptin is a neuropeptide involved in the hypothalamic regulation of reproduction in many species. Recent studies have revealed kisspeptin within the ovaries of rats, Siberian hamsters and humans, indicating a local role in reproduction. However, the role of kisspeptin in the ovary is poorly understood in the bitch. This study investigated the presence and location of kisspeptin protein (KISS1) and kisspeptin receptors (KISS1R) in the canine ovary during different stages of the reproductive cycle (pre-pubertal, anoestrus and cycling) by means of immunohistochemical staining...
October 23, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27767327/lung-dendritic-cells-shaping-immune-responses-throughout-copd-progression
#15
Christine M Freeman, Jeffrey L Curtis
Hallmarks of chronic obstructive pulmonary disease (COPD) include innate inflammation and remodeling of small airways that begin in early disease and the development of lung lymphoid follicles (LLF), indicative of adaptive immunity, in more spirometrically-severe stages. Common to these processes in all stages is orchestration by dendritic cells (DC). Recently improved understanding of the analogous lung DC subsets in humans and mice has allowed for better integration and interpretation of the experimental and clinical pathological literature...
October 21, 2016: American Journal of Respiratory Cell and Molecular Biology
https://www.readbyqxmd.com/read/27752256/understanding-immune-cells-in-tertiary-lymphoid-organ-development-it-is-all-starting-to-come-together
#16
Gareth W Jones, David G Hill, Simon A Jones
Tertiary lymphoid organs (TLOs) are frequently observed in tissues affected by non-resolving inflammation as a result of infection, autoimmunity, cancer, and allograft rejection. These highly ordered structures resemble the cellular composition of lymphoid follicles typically associated with the spleen and lymph node compartments. Although TLOs within tissues show varying degrees of organization, they frequently display evidence of segregated T and B cell zones, follicular dendritic cell networks, a supporting stromal reticulum, and high endothelial venules...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27746005/dietary-supplementation-of-yucca-yucca-schidigera-affects-ovine-ovarian-functions
#17
Radoslava Vlčková, Drahomíra Sopková, Zuzana Andrejčáková, Igor Valocký, Attila Kádasi, Abdel Halim Harrath, Vladimír Petrilla, Alexander V Sirotkin
Yucca (Yucca schidigera) is a popular medicinal plant due to its many positive effects on animal and human physiology, including their reproductive systems. To examine the effect of supplemental yucca feeding on sheep reproduction, including ovarian functions and their hormonal regulators, ewes were fed (or not fed, control) yucca powder (1.5 g/head/day, 30 days). Macromorphometric indexes of the oviduct, ovary, and ovarian folliculogenesis were measured. Reproductive hormone levels in the blood were measured using a radioimmunoassay...
January 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/27716848/follicular-regulatory-cd8-t-cells-impair-the-germinal-center-response-in-siv-and-ex-vivo-hiv-infection
#18
Brodie Miles, Shannon M Miller, Joy M Folkvord, David N Levy, Eva G Rakasz, Pamela J Skinner, Elizabeth Connick
During chronic HIV infection, viral replication is concentrated in secondary lymphoid follicles. Cytotoxic CD8 T cells control HIV replication in extrafollicular regions, but not in the follicle. Here, we show CXCR5hiCD44hiCD8 T cells are a regulatory subset differing from conventional CD8 T cells, and constitute the majority of CD8 T cells in the follicle. This subset, CD8 follicular regulatory T cells (CD8 TFR), expand in chronic SIV infection, exhibit enhanced expression of Tim-3 and IL-10, and express less perforin compared to conventional CD8 T cells...
October 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27714862/t-cell-induced-self-mhc-class-i-peptide-complexes-may-enable-de-novo-tolerance-induction-to-neo-antigens-occurring-outside-of-the-thymus
#19
Thilo Oelert, Amos Gilhar, Ralf Paus
The hair follicle (HF) epithelium can present self-antigens to cognate CD8+ T cells. These cells express periodically during the hair cycle arising or age-related immunogenic proteins including HF-specific neo-antigens. We propose, that IFN-gamma derived from the respective antigen-specific T cells spotting the particular self-peptides may thereby significantly induce and alter self-antigen presentation ("induced-self"). This induction, at first, may silence T cells, including neo-epitope-specific T cells. As the thymus cannot significantly recapitulate neo-epitopes evolving in the periphery, we propose that peripheral tissue-specific induction of MHC molecules presenting exactly these neo-epitopes by self- MHC/peptide-reactive CD8+ T cells is a key element of self-tolerance...
October 7, 2016: Experimental Dermatology
https://www.readbyqxmd.com/read/27707919/simian-immunodeficiency-virus-producing-cells-in-follicles-are-partially-suppressed-by-cd8-cells-in-vivo
#20
Shengbin Li, Joy M Folkvord, Eva G Rakasz, Hadia M Abdelaal, Reece K Wagstaff, Katalin J Kovacs, Hyeon O Kim, Ryoko Sawahata, Samantha MaWhinney, David Masopust, Elizabeth Connick, Pamela J Skinner
: Human immunodeficiency virus (HIV)- and simian immunodeficiency virus (SIV)-specific CD8(+) T cells are typically largely excluded from lymphoid B cell follicles, where HIV- and SIV-producing cells are most highly concentrated, indicating that B cell follicles are somewhat of an immunoprivileged site. To gain insights into virus-specific follicular CD8(+) T cells, we determined the location and phenotype of follicular SIV-specific CD8(+) T cells in situ, the local relationship of these cells to Foxp3(+) cells, and the effects of CD8 depletion on levels of follicular SIV-producing cells in chronically SIV-infected rhesus macaques...
December 15, 2016: Journal of Virology
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