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https://www.readbyqxmd.com/read/28928923/adult-neck-hemangiolymphangioma-a-case-and-review-of-its-etiology-diagnosis-and-management
#1
Tyler Murphy, Daryl Ramai, Jonathan Lai, Kiyoe Sullivan, Cecil Grimes
Vascular anomalies constitute some of the most difficult diagnostic and therapeutic enigmas in the practice of medicine, ranging from an asymptomatic birthmark to life-threatening congestive heart failure. Hemangiolymphangiomas (HLA) are extremely rare vascular malformations of both lymphatic and blood vessels in which 80-90% are diagnosed during the first 2 years of life. Though rare, these vascular malformations have promising clinical outcomes. We report a case of a 28-year-old male who presented with a neck mass of unknown etiology...
August 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28923419/tumor-associated-macrophages-are-strongly-related-to-vascular-invasion-non-luminal-subtypes-and-interval-breast-cancer
#2
Tor A Klingen, Ying Chen, Hans Aas, Elisabeth Wik, Lars A Akslen
Tumor associated macrophages (TAM) resemble M2 macrophages, promote tumor invasion and show strong expression of CD163 in breast cancer. We here investigated the association between CD163 positive macrophages and vascular invasion, molecular subgroups, mode of detection, and patient outcome. We performed a population-based, retrospective study of invasive breast cancer from the Norwegian Breast Cancer Screening Programme in Vestfold County (2004-2009), including 200 screen-detected and 82 interval cancers. Immunohistochemically CD163 positive macrophages were counted in the most active areas (hot-spots) and dichotomized as high (upper quartile) and low counts...
September 15, 2017: Human Pathology
https://www.readbyqxmd.com/read/28913385/closed-internal-degloving-of-the-flank
#3
Lindsay F Remy, Jacob Azurdia, Ashraf Fansa, Nabil A Ebraheim
Originally described in 1853 by Dr. Morel-Lavellee, closed internal degloving injuries represent an important, although uncommon, source of morbidity in trauma patients. These injuries are typically the result of a shearing or crushing force that traumatically separates the skin and subcutaneous tissue from the underlying fat. This results in disruption of perforating blood vessels and lymphatics, leading to hematoma/seroma formation. We describe two cases in which industrial crush injuries resulted in lumbar transverse process fracture...
July 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/28911825/paving-the-rho-in-cancer-metastasis-rho-gtpases-and-beyond
#4
REVIEW
Sepp Jansen, Reinoud Gosens, Thomas Wieland, Martina Schmidt
Malignant carcinomas are often characterized by metastasis, the movement of carcinoma cells from a primary site to colonize distant organs. For metastasis to occur, carcinoma cells first must adopt a pro-migratory phenotype and move through the surrounding stroma towards a blood or lymphatic vessel. Currently, there are very limited possibilities to target these processes therapeutically. The family of Rho GTPases is an ubiquitously expressed division of GTP-binding proteins involved in the regulation of cytoskeletal dynamics and intracellular signaling...
September 11, 2017: Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28910489/nucleoside-nucleotide-reverse-transcriptase-inhibitors-attenuate-angiogenesis-and-lymphangiogenesis-by-impairing-receptor-tyrosine-kinases-signalling-in-endothelial-cells
#5
Lin Song, Sha Ding, Zhen Ge, Xiaolong Zhu, Cong Qiu, Yuewen Wang, Enyin Lai, Weijun Yang, Yi Sun, Samson A Chow, Luyang Yu
BACKGROUND AND PURPOSE: Cardiovascular disease associated with antiretroviral therapy (ART) has become a major clinical challenge for HIV-positive patients. However, the role of ART in blood vessel growth is largely unknown. Here, we examined an integral component of ART, nucleoside/nucleotide reverse transcriptase inhibitors (NRTIs), and investigated their effects on key microvascular functions, including angiogenesis and lymphangiogenesis. EXPERIMENTAL APPROACH: The angiogenesis/lymphangiogenesis capability of endothelial cells (ECs) was evaluated using migration, proliferation and tube formation assays in vitro, and mouse ear and Matrigel plug assays in vivo...
September 14, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28899738/angiomyomatous-hamartoma-of-lymph-nodes-revisited-clinico-pathologic-study-of-21-cases-emphasizing-its-distinction-from-lymphangioleiomyomatosis-of-lymph-nodes
#6
Michelle Moh, Ankur Sangoi, Joseph T Rabban
Angiomyomatous hamartoma of lymph nodes (AMH-LN) is an uncommon benign proliferation of smooth muscle, blood vessels, collagenous stroma and adipocytes, most commonly affecting inguinal LN. A similar constellation of cell types constitutes various members of the perivascular epithelioid cell tumor (PEComa) family, including lymphangioleiomyomatosis (LAM) which can involve LN in women. Because some LN-LAM patients have tuberous sclerosis complex (TSC) and/or other PEComa family lesions, it is clinically relevant to distinguish LN-LAM from AMH-LN...
September 9, 2017: Human Pathology
https://www.readbyqxmd.com/read/28888665/fish-scale-derived-collagen-patch-promotes-growth-of-blood-and-lymphatic-vessels-in-vivo
#7
Jun Kit Wang, Kim Pin Yeo, Yong Yao Chun, Timothy Thatt Yang Tan, Nguan Soon Tan, Véronique Angeli, Cleo Choong
In this study, Type I collagen was extracted from fish scales as a potential alternative source of collagen for tissue engineering applications. Since unmodified collagen typically has poor mechanical and degradation stability both in vitro and in vivo, additional methylation modification and 1,4-butanediol diglycidyl ether (BDE) crosslinking steps were used to improve the physicochemical properties of fish scale-derived collagen. Subsequently, in vivo studies using a murine model demonstrated the biocompatibility of the different fish scale-derived collagen patches...
September 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28883015/mouse-models-of-metastasis-progress-and-prospects
#8
REVIEW
Laura Gómez-Cuadrado, Natasha Tracey, Ruoyu Ma, Binzhi Qian, Valerie G Brunton
Metastasis is the spread of cancer cells from a primary tumor to distant sites within the body to establish secondary tumors. Although this is an inefficient process, the consequences are devastating as metastatic disease accounts for >90% of cancer-related deaths. The formation of metastases is the result of a series of events that allow cancer cells to escape from the primary site, survive in the lymphatic system or blood vessels, extravasate and grow at distant sites. The metastatic capacity of a tumor is determined by genetic and epigenetic changes within the cancer cells as well as contributions from cells in the tumor microenvironment...
September 1, 2017: Disease Models & Mechanisms
https://www.readbyqxmd.com/read/28880889/loss-of-kaiso-expression-in-breast-cancer-cells-prevents-intra-vascular-invasion-in-the-lung-and-secondary-metastasis
#9
Jacek M Kwiecien, Blessing I Bassey-Archibong, Wojciech Dabrowski, Lyndsay G Rayner, Alexandra R Lucas, Juliet M Daniel
The metastatic activity of breast carcinomas results from complex genetic changes in epithelial tumor cells and accounts for 90% of deaths in affected patients. Although the invasion of the local lymphatic vessels and veins by malignant breast tumor cells and their subsequent metastasis to the lung, has been recognized, the mechanisms behind the metastatic activity of breast tumor cells to other distal organs and the pathogenesis of metastatic cancer are not well understood. In this study, we utilized derivatives of the well-established and highly metastatic triple negative breast cancer (TNBC) cell line MDA-MB-231 (MDA-231) to study breast tumor metastasis in a mouse model...
2017: PloS One
https://www.readbyqxmd.com/read/28878876/an-unusual-case-of-disappearing-bone-disease-in-the-mandible-and-literature-review
#10
Ambareen A Naqvi, Sandeep S Joshi, Edmund Bailey
Disappearing bone disease is a rare disorder that causes spontaneous and progressive osteolysis and proliferation of lymphatic tissue and blood vessels. It is debilitating and there is evidence of mortality in reported cases including those affecting mandible. A 38-year-old man was diagnosed with disappearing bone disease of the mandible in 2013. This had progressed from being in the right ramus only, and now extends to the lower right first molar and affects the left coronoid process and ramus. Mandibular involvement has shown to be high-risk...
February 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28875528/transplantation-of-artificial-human-lymphatic-vascular-tissues-fabricated-using-a-cell-accumulation-technique-and-their-engraftment-in-mouse-tissue-with-vascular-remodeling
#11
Yoshiya Asano, Hiroshi Shimoda, Michiya Matsusaki, Mitsuru Akashi
Transplantation of engineered tissues with microvascular structure is advancing towards therapeutic application to improve the flow of blood and/or lymphatic fluids. In lymphatic disorders, transplantation of tissue-engineered lymphatic grafts can be an ideal treatment for draining excessive lymphatic fluid. In this study, we examined the transplantation of three-dimensional artificial human lymphatic network tissue (AHLT) fabricated by the cell accumulation technique into the subcutaneous tissue and fascia of mice...
September 6, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28869350/utilising-lymphatic-cell-markers-to-visualise-human-lymphatic-abnormalities
#12
REVIEW
Zerina Lokmic
The in vivo visualisation of the human lymphatic system is limited by the mode of delivery of tracing agents, depth of field and size of the area examined, and specificity of the cell markers used to distinguish lymphatic endothelium from the blood vessels and the surrounding tissues. These limitations are particularly problematic when imaging human lymphatic abnormalities. Firstly, limited understanding of the lymphatic disease aetiology exists with respect to genetic causes and phenotypic presentations. Secondly, the ability of a tracer to reach the entire lymphatic network within the diseased tissue is suboptimal...
September 4, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28858432/imaging-lymphatics-in-human-normal-and-lymphedema-limbs-usefulness-of-various-modalities-for-evaluation-of-lymph-and-edema-fluid-flow-pathways-and-dynamics
#13
Marzanna T Zaleska, Waldemar L Olszewski
The human lymphatic system morphology and function still remain largely unknown to clinicians and biologists. How does the lymphatic vascular system look like in comparison to the blood transport system, how does lymph flow, where does capillary filtrate accumulate in cases with lymphatic obstruction caused by inflammation, trauma and cancer therapy, remain as basic questions. Visualization of the lymphatic pathways and dynamics of lymph flow, and in cases of obstruction, the localization of the capillary filtrate/edema fluid accumulation becomes indispensable...
August 31, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28855644/collagen-complexity-spatially-defines-microregions-of-total-tissue-pressure-in-pancreatic-cancer
#14
Michael D Nieskoski, Kayla Marra, Jason R Gunn, P Jack Hoopes, Marvin M Doyley, Tayyaba Hasan, B Stuart Trembly, Brian W Pogue
The poor efficacy of systemic cancer therapeutics in pancreatic ductal adenocarcinoma (PDAC) is partly attributed to deposition of collagen and hyaluronan, leading to interstitial hypertension collapsing blood and lymphatic vessels, limiting drug delivery. The intrinsic micro-regional interactions between hyaluronic acid (HA), collagen and the spatial origins of mechanical stresses that close off blood vessels was investigated here. Multiple localized pressure measurements were analyzed with spatially-matched histochemical images of HA, collagen and vessel perfusion...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28855497/a-49-year-old-man-with-subacute-respiratory-failure-and-interstitial-lung-opacities
#15
Anastasiia A Rudkovskaia, Ying-Chun Lo, Virginia Brady, Jose Costa, Wassim H Fares
BACKGROUND Pulmonary arterial hypertension (PAH) results from proliferative vasculopathy involving all layers of the blood vessel. Similar findings may be present in pulmonary hypertension (PH) associated with microscopic tumor embolism, which are thought to be related to the phenomenon of pulmonary tumor thrombotic microangiopathy (PTTM). PTTM is associated with the activation of the coagulation system at the surface of the tumor emboli, resulting in stenosis or occlusion of the vessel. CASE REPORT A 49-year-old man with stage IV gastro-esophageal junction adenocarcinoma presented with complaints of cough and shortness of breath...
August 31, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28846834/microanatomical-profiles-on-the-lymphatic-system-in-the-human-ampulla-of-vater-immunohistochemistry-and-scanning-electron-microscopy
#16
Takuji Kagiya, Hiroshi Shimoda, Hirokazu Narita, Tadashi Odagiri, Seiji Watanabe, Keinosuke Ishido, Daisuke Kudo, Norihisa Kimura, Taiichi Wakiya, Kenichi Hakamada
BACKGROUND: Little information has been available regarding microanatomy of lymphatic system in the ampulla of Vater, though it is of critical importance for an understanding of tumor progression via the lymphatics and determination of surgical strategy. The present study, therefore, aimed to demonstrate the distribution and microanatomical profiles on the lymphatic system in the ampulla. METHODS: The fine distribution and structure of the lymphatic vessels were investigated in the ampulla and the stomach by immunohistochemistry for lymphatic- (D2-40) and blood vascular- (CD31) specific markers and scanning electron microscopy...
August 28, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28846685/myeloid-wnt-ligands-are-required-for-normal-development-of-dermal-lymphatic-vasculature
#17
Ajit Muley, Yoshi Odaka, Ian P Lewkowich, Shruti Vemaraju, Terry P Yamaguchi, Carrie Shawber, Belinda H Dickie, Richard A Lang
Resident tissue myeloid cells play a role in many aspects of physiology including development of the vascular systems. In the blood vasculature, myeloid cells use VEGFC to promote angiogenesis and can use Wnt ligands to control vascular branching and to promote vascular regression. Here we show that myeloid cells also regulate development of the dermal lymphatic vasculature using Wnt ligands. Using myeloid-specific deletion of the WNT transporter Wntless we show that myeloid Wnt ligands are active at two distinct stages of development of the dermal lymphatics...
2017: PloS One
https://www.readbyqxmd.com/read/28844882/the-lymphatic-vasculature-its-role-in-adipose-metabolism-and-obesity
#18
REVIEW
Noelia Escobedo, Guillermo Oliver
Obesity is a key risk factor for metabolic and cardiovascular diseases, and although we understand the mechanisms regulating weight and energy balance, the causes of some forms of obesity remain enigmatic. Despite the well-established connections between lymphatics and lipids, and the fact that intestinal lacteals play key roles in dietary fat absorption, the function of the lymphatic vasculature in adipose metabolism has only recently been recognized. It is well established that angiogenesis is tightly associated with the outgrowth of adipose tissue, as expanding adipose tissue requires increased nutrient supply from blood vessels...
August 22, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28819859/utilizing-matrigel-transwell-invasion-assay-to-detect-and-enumerate-circulating-tumor-cells
#19
Xingtong Liu, Xiangwei Wu
Metastasis is the cause of 90% of human cancer deaths. Circulating tumor cells (CTCs) in the peripheral blood and/or lymphatic vessels are cells shed from primary tumors and considered to be precursors of metastasis. Study of CTCs allows the serial monitoring of tumor progression and may provide predictive and prognostic biomarkers in clinic. Current CTC isolation and detection technologies encounter several challenges, including: heterogeneity of CTCs, low cell viability and/or high rate of contamination post-isolation, and the inability to distinguish viable/invasive from nonviable/nonfunctional CTCs, all of which can limit in vitro and in vivo characterization of CTCs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28814672/vipar-a-quantitative-approach-to-3d-histopathology-applied-to-lymphatic-malformations
#20
René Hägerling, Dominik Drees, Aaron Scherzinger, Cathrin Dierkes, Silvia Martin-Almedina, Stefan Butz, Kristiana Gordon, Michael Schäfers, Klaus Hinrichs, Pia Ostergaard, Dietmar Vestweber, Tobias Goerge, Sahar Mansour, Xiaoyi Jiang, Peter S Mortimer, Friedemann Kiefer
BACKGROUND: Lack of investigatory and diagnostic tools has been a major contributing factor to the failure to mechanistically understand lymphedema and other lymphatic disorders in order to develop effective drug and surgical therapies. One difficulty has been understanding the true changes in lymph vessel pathology from standard 2D tissue sections. METHODS: VIPAR (volume information-based histopathological analysis by 3D reconstruction and data extraction), a light-sheet microscopy-based approach for the analysis of tissue biopsies, is based on digital reconstruction and visualization of microscopic image stacks...
August 17, 2017: JCI Insight
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