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Lymph node transfer

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https://www.readbyqxmd.com/read/28444768/implantable-doppler-monitoring-of-buried-free-flaps-during-vascularized-lymph-node-transfer
#1
Chad M Teven, Adrian S H Ooi, Amir Inbal, David W Chang
BACKGROUND AND OBJECTIVES: Reliable flap monitoring is crucial to the success of free tissue transfer, including vascularized lymph node transfer (VLNT). However, no large-scale study has examined implantable Doppler monitoring in VLNT. We aimed to determine whether an implantable Doppler system can reliably monitor flap perfusion during VLNT and also to calculate the sensitivity and specificity of this system for detecting compromise in the monitored vessel. METHODS: An analysis of prospectively collected data of patients who underwent buried VLNT with implantable Doppler monitoring between 2014 and 2015 was performed...
April 25, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28438184/microbiota-activated-cd103-dcs-stemming-from-microbiota-adaptation-specifically-drive-%C3%AE-%C3%AE-t17-proliferation-and-activation
#2
Chris Fleming, Yihua Cai, Xuan Sun, Venkatakrishna R Jala, Feng Xue, Samantha Morrissey, Yu-Ling Wei, Yueh-Hsiu Chien, Huang-Ge Zhang, Bodduluri Haribabu, Jian Huang, Jun Yan
BACKGROUND: IL-17-producing γδT cells (γδT17) promote autoinflammatory diseases and cancers. Yet, γδT17 peripheral regulation has not been thoroughly explored especially in the context of microbiota-host interaction. The potent antigen-presenting CD103(+) dendritic cell (DC) is a key immune player in close contact with both γδT17 cells and microbiota. This study presents a novel cellular network among microbiota, CD103(+) DCs, and γδT17 cells. METHODS: Immunophenotyping of IL-17r(-/-) mice and IL-17r(-/-) IRF8(-/-) mice were performed by ex vivo immunostaining and flow cytometric analysis...
April 24, 2017: Microbiome
https://www.readbyqxmd.com/read/28437578/klrg1-impairs-treg-competitive-fitness-in-the-gut
#3
Holger Meinicke, Anna Bremser, Maria Brack, Klaudia Schrenk, Hanspeter Pircher, Ana Izcue
Immune homeostasis requires the tight, tissue-specific control of the different CD4(+) Foxp3(+) regulatory T cells (Treg) populations. The cadherin-binding inhibitory receptor KLRG1 is expressed by a subpopulation of Treg with GATA3(+) effector phenotype. Although such Treg are important for the immune balance, especially in the gut, the role of KLRG1 in Treg has not been assessed. Using KLRG1 KO mice, we found that KLRG1 deficiency does not affect Treg frequencies in spleen, mesenteric lymph nodes or intestine, or frequencies of GATA3(+) Treg in the gut...
April 24, 2017: Immunology
https://www.readbyqxmd.com/read/28437441/fluorescence-imaging-topography-scanning-system-for-intraoperative-multimodal-imaging
#4
Tri T Quang, Hye-Yeong Kim, Forrest Sheng Bao, Francis A Papay, W Barry Edwards, Yang Liu
Fluorescence imaging is a powerful technique with diverse applications in intraoperative settings. Visualization of three dimensional (3D) structures and depth assessment of lesions, however, are oftentimes limited in planar fluorescence imaging systems. In this study, a novel Fluorescence Imaging Topography Scanning (FITS) system has been developed, which offers color reflectance imaging, fluorescence imaging and surface topography scanning capabilities. The system is compact and portable, and thus suitable for deployment in the operating room without disturbing the surgical flow...
2017: PloS One
https://www.readbyqxmd.com/read/28418934/chromosome-analysis-in-a-case-of-a-plutonium-contaminated-wound
#5
E Janet Tawn, Gillian B Curwen, Anthony E Riddell, David C Lloyd, Elizabeth A Ainsbury
Chromosome analysis of peripheral blood lymphocytes was undertaken over a 10 year period following an intake of plutonium through a hand wound. Frequencies of cells with unstable complex aberrations remained high throughout this time, probably reflecting direct exposure of lymphocytes as they passed plutonium which had transferred to regional lymph nodes. Analysis at the final sampling time also revealed cells with stable aberrations at a much higher frequency relative to the number of unstable cells than expected from direct exposure, and is therefore most likely to be reflecting exposure to lymphocyte precursor cells from plutonium that has become deposited on bone surfaces...
April 18, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28406821/vascularized-lymph-node-transfer-to-the-profunda-artery-perforator-pedicle-a-reliable-proximal-recipient-vessel-option-in-the-medial-thigh
#6
Jonas A Nelson, Babak H Mehrara, Joseph H Dayan
No abstract text is available yet for this article.
April 6, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28396669/basophil-activation-dependent-autoantibody-and-interleukin-17-production-exacerbate-systemic-lupus-erythematosus
#7
Qingjun Pan, Li Gong, Haiyan Xiao, Yongmin Feng, Lu Li, Zhenzhen Deng, Ling Ye, Jian Zheng, Carol A Dickerson, Lin Ye, Ning An, Chen Yang, Hua-Feng Liu
OBJECTIVE: Autoantibody and inflammatory cytokines play crucial roles in the development of systemic lupus erythematosus (SLE); however, the regulation of their production warrants further investigation. This study aimed to investigate the role of basophil activation in the development of SLE based on studies in patients with SLE and spontaneous lupus-prone MRL-lpr/lpr mice. METHODS: The phenotypes of peripheral basophils and the production of autoantibody and interleukin (IL)-17 in patients with SLE were determined by flow cytometry and enzyme-linked immunosorbent assay, and also their correlations were investigated by statistical analysis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28384866/evaluation-of-cyclin-d1-expression-in-head-and-neck-squamous-cell-carcinoma
#8
Vishal Dhingra, Jyoti Verma, Vatsala Misra, Sapan Srivastav, Faheema Hasan
INTRODUCTION: Squamous Cell Carcinoma (SCC) is an aggressive epithelial malignancy of the upper aero digestive tract and comprises 90% of all Head and Neck Squamous Cell Carcinoma (HNSCC). It is the sixth leading cancer worldwide with approximately 600,000 cases reported annually. It is one of the most common cancers in India. Tumour Lymph Node and Metastases (TNM) staging has been the most useful indicator to predict prognosis in HNSCC but recently various biomolecular markers have potentially offered new methods for early diagnosis and treatment alternatives for HNSCC patients; one amongst them being cyclin D1...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28375749/immunization-with-recombinantly-expressed-lrp4-induces-experimental-autoimmune-myasthenia-gravis-in-c57bl-6-mice
#9
Canan Ulusoy, Filiz Çavuş, Vuslat Yılmaz, Erdem Tüzün
BACKGROUND: Myasthenia gravis (MG) is an autoimmune disease of the neuromuscular junction (NMJ), characterized with muscle weakness. While MG develops due to acetylcholine receptor (AChR) antibodies in most patients, antibodies to muscle-specific receptor tyrosine kinase (MuSK) or low-density lipoprotein receptor-related protein 4 (LRP4) may also be identified. Experimental autoimmune myasthenia gravis (EAMG) has been previously induced by both LRP4 immunization and passive transfer of LRP4 antibodies...
April 4, 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28366195/a-minimum-number-of-autoimmune-t-cells-to-induce-autoimmunity
#10
Angela J T Bosch, Beatrice Bolinger, Simone Keck, Ondrej Stepanek, Aleksandra J Ozga, Virginie Galati-Fournier, Jens V Stein, Ed Palmer
While autoimmune T cells are present in most individuals, only a minority of the population suffers from an autoimmune disease. To better appreciate the limits of T cell tolerance, we carried out experiments to determine how many autoimmune T cells are required to initiate an experimental autoimmune disease. Variable numbers of autoimmune OT-I T cells were transferred into RIP-OVA mice, which were injected with antigen-loaded DCs in a single footpad; this restricted T cell priming to a few OT-I T cells that are present in the draining popliteal lymph node...
March 12, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28363907/retinoic-acid-regulates-immune-responses-by-promoting-il-22-and-modulating-s100-proteins-in-viral-hepatitis
#11
Zuliang Jie, Yuejin Liang, Panpan Yi, Hui Tang, Lynn Soong, Yingzi Cong, Kangling Zhang, Jiaren Sun
Although large amounts of vitamin A and its metabolite all-trans retinoic acid (RA) are stored in the liver, how RA regulates liver immune responses during viral infection remains unclear. In this study, we demonstrated that IL-22, mainly produced by hepatic γδ T cells, attenuated liver injury in adenovirus-infected mice. RA can promote γδ T cells to produce mTORC1-dependent IL-22 in the liver, but inhibits IFN-γ and IL-17. RA also affected the aptitude of T cell responses by modulating dendritic cell (DC) migration and costimulatory molecule expression...
March 31, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28356527/chemokine-receptor-ccr7-restricts-fatal-west-nile-virus-encephalitis
#12
Susana V Bardina, Julia A Brown, Daniela Michlmayr, Kevin W Hoffman, Janet Sum, Alexander G Pletnev, Sergio A Lira, Jean K Lim
West Nile virus (WNV) is a mosquito-transmitted flavivirus that can cause debilitating encephalitis. To delineate the mechanisms behind this pathology, we studied Ccr7-deficient mice, which afforded us the capacity to study infection in mice with disrupted peripheral cellular trafficking events. The loss of Ccr7 resulted in an immediate pan-leukocytosis that remained elevated throughout the infection. This leukocytosis resulted in a significant enhancement of leukocyte accumulation within the CNS. Despite an excess of virus-specific T cells in the CNS, Ccr7-deficient mice had significantly higher CNS viral loads and mortality rates compared to wild-type animals...
March 29, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28350684/current-concepts-in-the-surgical-management-of-lymphedema
#13
Theodore A Kung, Manish C Champaneria, Jeffrey H Maki, Peter C Neligan
LEARNING OBJECTIVES: After studying this article, the participant should be able to: 1. Discuss the key points in diagnosing lymphedema. 2. Understand the imaging modalities that facilitate diagnosis and surgical planning. 3. Appreciate the indications for both physiologic and ablative procedures. 4. Recognize the potential role of lymphaticovenular anastomosis and vascularized lymph node transfer in the treatment of patients with lymphedema. SUMMARY: Lymphedema is an incurable disease caused by insufficient lymphatic drainage leading to abnormal accumulation of interstitial fluid within the soft tissues...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28349940/adventitial-lymphatic-capillary-expansion-impacts-on-plaque-t-cell-accumulation-in-atherosclerosis
#14
Timo Rademakers, Emiel P C van der Vorst, Isabelle T M N Daissormont, Jeroen J T Otten, Kosta Theodorou, Thomas L Theelen, Marion Gijbels, Andrey Anisimov, Harri Nurmi, Jan H N Lindeman, Andreas Schober, Sylvia Heeneman, Kari Alitalo, Erik A L Biessen
During plaque progression, inflammatory cells progressively accumulate in the adventitia, paralleled by an increased presence of leaky vasa vasorum. We here show that next to vasa vasorum, also the adventitial lymphatic capillary bed is expanding during plaque development in humans and mouse models of atherosclerosis. Furthermore, we investigated the role of lymphatics in atherosclerosis progression. Dissection of plaque draining lymph node and lymphatic vessel in atherosclerotic ApoE(-/-) mice aggravated plaque formation, which was accompanied by increased intimal and adventitial CD3(+) T cell numbers...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28348273/cutting-edge-loss-of-t-cell-riam-precludes-conjugate-formation-with-apc-and-prevents-immune-mediated-diabetes
#15
Frederic Lagarrigue, Frank B Gertler, Mark H Ginsberg, Joseph M Cantor
Rap1-interacting adaptor molecule (RIAM) is a Rap1 effector that mediates the recruitment of talin to integrins, thereby supporting their activation. In this study, we investigated the role of RIAM in an adoptive transfer model for type I diabetes and report that RIAM expression in T cells is necessary for diabetes development. Loss of RIAM did not prevent lymphocyte recruitment to draining lymph nodes 24 h after transfer, but it was required for Ag-driven proliferation and cytotoxic killing. RIAM is recruited to immune synapses along with talin and LFA-1, and loss of RIAM profoundly suppresses Ag-dependent conjugate formation in primary naive and effector T cells...
March 27, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28342908/intestinal-dendritic-cell-licensing-through-toll-like-receptor-4-is-required-for-oral-tolerance-in-patients-with-allergic-contact-dermatitis
#16
Feriel Hacini-Rachinel, Mercedes Gomez de Agüero, Reem Kanjarawi, Ludovic Moro-Sibilot, Jean-Benoit Le Luduec, Claire Macari, Gilles Boschetti, Emilie Bardel, Philippe Langella, Bertrand Dubois, Dominique Kaiserlian
BACKGROUND: Induction of oral tolerance to haptens is an efficient way to prevent allergic contact dermatitis (ACD) in mice. Toll-like receptor (TLR)-mediated sensing of the microbiota contributes to gut homeostasis, yet whether it contributes to induction of oral tolerance has not been documented. OBJECTIVE: We examined whether oral tolerance to the contact sensitizer 2,4-dinitro-fluorobenzene (DNFB) depends on microbiota/TLRs and evaluated the role of TLR4 on the tolerogenic function of intestinal dendritic cells (DCs)...
March 22, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28338166/-preoperative-assessment-value-of-spectral-ct-quantitative-parameters-in-lymph-node-metastasis-of-gastric-cancer
#17
Yaru Chai, Jianbo Gao, Jingjing Xing, Peijie Lyu, Pan Liang, Xiaohua Chen
OBJECTIVE: To investigate the preoperative assessment value of spectral CT quantitative parameters in lymph node metastasis of gastric cancer. METHODS: From December 2013 to June 2015, clinical and image data of 86 patients with gastric cancer confirmed by gastroscope pathology undergoing preoperative enhanced CT were prospectively collected. Enhanced CT included nonenhanced CT of conventional 120 kVp mode, arterial phase (AP) and venous phase (VP) with GSI mode on Discover GSI CT scanner...
March 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28334445/double-gastroepiploic-vascularized-lymph-node-tranfers-to-middle-and-distal-limb-for-the-treatment-of-lymphedema
#18
Pedro Ciudad, Oscar J Manrique, Shivprasad Date, Mouchammed Agko, John Jaime Perez Coca, Wei-Ling Chang, Federico Lo Torto, Fabio Nicoli, Michelle Maruccia, Javier López Mendoza, Hung-Chi Chen
BACKGROUND: Vascularized lymph node (VLN) transfer for lymphedema treatment has shown promising results. Optimal donor and recipient sites remain a matter of debate. We describe the technique and outcomes of a laparoscopically harvested extended gastroepiploic VLN flap with two levels of inset. PATIENTS AND METHODS: Between 2014 and 2015, four-patients with upper limb breast cancer-related lymphedema and three-patients with lower limb pelvic cancer-related lymphedema who underwent VLN transfers were included...
March 23, 2017: Microsurgery
https://www.readbyqxmd.com/read/28324908/-magnetic-sentinel-lymph-node-detection-in-prostate-cancer-after-intraprostatic-injection-of-superparamagnetic-iron-oxide-nanoparticles
#19
Alexander Winter, Svenja Engels, Tobias Kowald, Tina Susanne Paulo, Holger Gerullis, Ajay Chavan, Friedhelm Wawroschek
In prostate cancer, reliable information about the lymph node status is of great importance for accurate staging and the optimal planning of treatment. Despite recent advances in imaging, the histological detection of metastases, or pelvic lymphadenectomy (PLND), continues to be the most reliable method for lymph node staging in clinically localised prostate cancer, especially as this procedure enables the detection of small or micrometastases. Radioisotope-guided sentinel PLND (sPLND) demonstrates high sensitivity in the detection of lymph node metastases as well as low morbidity in prostate cancer because of the targeted removal of a relatively small number of lymph nodes...
March 21, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28317173/extracellular-matrix-in-the-cns-induced-by-neuropathogenic-viral-infection
#20
Rihito Watanabe, Masatoshi Kakizaki
During the early phase of infection with an extremely neurovirulent murine coronavirus, cl-2, the ER-TR7 antigen (ERag)-positive fibers (ERfibs) associated with laminin and collagen III show a rapid increase in expression levels in the meninges, followed by an appearance of the antigens in the ventricle and brain parenchyma. Then, cl-2 invades the ventricle and ventricular wall along the newly assembled ERfibs after infection, using them as a pathway from the meninges, the initial site of infection. In the lymph nodes and spleen, ERag is mainly produced by fibroblastic reticular cells (FRCs), which play a key role in nursing the ERfibs to form a fibroblastic reticular network (FRN)...
March 20, 2017: Neuropathology: Official Journal of the Japanese Society of Neuropathology
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