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https://www.readbyqxmd.com/read/28646200/mesenchymal-stem-cells-secretome-induced-axonal-outgrowth-is-mediated-by-bdnf
#1
Luís F Martins, Rui O Costa, Joana R Pedro, Paulo Aguiar, Sofia C Serra, Fabio G Teixeira, Nuno Sousa, António J Salgado, Ramiro D Almeida
Mesenchymal stem cells (MSCs) have been used for cell-based therapies in regenerative medicine, with increasing importance in central and peripheral nervous system repair. However, MSCs grafting present disadvantages, such as, a high number of cells required for transplantation and low survival rate when transplanted into the central nervous system (CNS). In line with this, MSCs secretome which present on its composition a wide range of molecules (neurotrophins, cytokines) and microvesicles, can be a solution to surpass these problems...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28643872/circulating-microrna-as-candidates-for-early-embryonic-viability-in-cattle
#2
K G Pohler, J A Green, L A Moley, S Gunewardena, W T Hung, R R Payton, X Hong, L K Christenson, T W Geary, M F Smith
Blood-borne extracellular vesicles (i.e. exosomes and microvesicles) carrying microRNAs (miRNAs) could make excellent biomarkers of disease and different physiologic states, including pregnancy status. We tested the hypothesis that circulating extracellular vesicle-derived miRNAs might differentiate the pregnancy status of cows that had maintained pregnancy to Day 30 from non-pregnant cows or from those that exhibited embryonic mortality between Days 17-30 of gestation. Cows were randomly assigned for artificial insemination with fertile semen (n= 36) or dead semen (n = 8; control group) on Day 0 (day of estrus)...
June 23, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/28642812/the-antioxidant-machinery-of-young-and-senescent-human-umbilical-vein-endothelial-cells-and-their-microvesicles
#3
Guillermo Bodega, Matilde Alique, Lourdes Bohórquez, Sergio Ciordia, María C Mena, Manuel R Ramírez
We examine the antioxidant role of young and senescent human umbilical vein endothelial cells (HUVECs) and their microvesicles (MVs). Proteomic and Western blot studies have shown young HUVECs to have a complete and well-developed antioxidant system. Their MVs also contain antioxidant molecules, though of a smaller and more specific range, specialized in the degradation of hydrogen peroxide and the superoxide anion via the thioredoxin-peroxiredoxin system. Senescence was shown to be associated with a large increase in the size of the antioxidant machinery in both HUVECs and their MVs...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28641610/-biological-characteristics-of-microvesicles-secreted-by-human-peripheral-blood-hematopoietic-stem-cells
#4
Chen Liang, Jun-Hui Wang, Lei Deng, Lu Wang, Yi Wang, Ya-Jing Huang, Tie-Qiang Liu, Bo Cai, Hong-Li Zuo, Qi-Yun Sun, Jian-Hui Qiao, Chang-Lin Yu, Kai-Xun Hu, Hui-Sheng Ai, Mei Guo
OBJECTIVE: To investigate the effects of microvesicles(MV) isolated from human peripheral blood hematopoietic stem cells(PB-HSC) on immune regulation and hematopoiesis. METHODS: PB-HSCs were separated by density-gradient centrifugation and cultrued. The supernatants of PB-HSC at 48 h were harvested for isolation and purification of MV by using ultracentrifugation. The electron microscopy was used to observe the morphology of MV. The protein level in MV was quantified through bicinchoninic acid(BCA) protein assay...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28640782/perioperative-venous-thromboembolism-a-review
#5
Ronald J Gordon, Frederick W Lombard
Venous thromboembolism (VTE) is a significant problem in the perioperative period, increasing patient morbidity, mortality, and health care costs. It is also considered the most preventable of the major postoperative complications. Despite widespread adoption of prophylaxis guidelines, it appears that morbidity from the disease has not substantially changed within the past 2 decades. It is becoming clear that current prophylaxis efforts are not sufficient. Using more potent anticoagulants may decrease the incidence of VTE, but increase the risk for bleeding and infection...
June 20, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28639626/circulating-mirnas-as-biomarkers-of-kidney-disease
#6
EDITORIAL
Alexander Hüttenhofer, Gert Mayer
Interest in microRNAs (miRNAs) has dramatically increased in recent years not only because they regulate mRNA expression, and thus many physiological or pathophysiological processes, but also because they could serve as biomarkers. Next to analysis of tissue miRNA expression, measurement in body fluids such as blood or urine is attractive because miRNA in microvesicles or bound to protein is very stable. Currently it is unclear whether these circulating miRNAs are tissue and disease specific or represent more general pathologies like inflammation...
February 2017: Clinical Kidney Journal
https://www.readbyqxmd.com/read/28639207/the-cell-biology-of-the-thyroid-disrupting-mechanism-of-dichlorodiphenyltrichloroethane-ddt
#7
REVIEW
M Rossi, A R Taddei, I Fasciani, R Maggio, F Giorgi
OBJECTIVE: Dichlorodiphenyltrichloroethane (DDT) is an organochlorine known for its pesticide properties and for its negative effects on human health. It was banned in most countries for its toxicity to the endocrine system, but due to its persistence at clinically relevant concentrations in both soil and animal tissues, DDT is still linked to several health and social problems. METHODS: We have previously shown that DDT exposure is causally related to the extracellular release of vesicular organelles such as microvesicles and/or exosomes by using immunocytochemistry with gold-tagged antibodies and various fluorescent membrane markers...
June 21, 2017: Journal of Endocrinological Investigation
https://www.readbyqxmd.com/read/28638822/extracellular-vesicles-in-renal-pathophysiology
#8
REVIEW
Margherita A C Pomatto, Chiara Gai, Benedetta Bussolati, Giovanni Camussi
Extracellular vesicles are a heterogeneous population of microparticles released by virtually all living cells which have been recently widely investigated in different biological fields. They are typically composed of two primary types (exosomes and microvesicles) and are recently commanding increasing attention as mediators of cellular signaling. Indeed, these vesicles can affect recipient cells by carrying and delivering complex cargos of biomolecules (including proteins, lipids and nucleic acids), protected from enzymatic degradation in the environment...
2017: Frontiers in Molecular Biosciences
https://www.readbyqxmd.com/read/28633020/apoptosis-and-compensatory-proliferation-signaling-are-coupled-by-crki-containing-microvesicles
#9
Kajal H Gupta, Josef W Goldufsky, Stephen J Wood, Nicholas J Tardi, Gayathri S Moorthy, Douglas Z Gilbert, Janet P Zayas, Eunsil Hahm, Mehmet M Altintas, Jochen Reiser, Sasha H Shafikhani
Apoptosis has been implicated in compensatory proliferation signaling (CPS), whereby dying cells induce proliferation in neighboring cells as a means to restore homeostasis. The nature of signaling between apoptotic cells and their neighboring cells remains largely unknown. Here we show that a fraction of apoptotic cells produce and release CrkI-containing microvesicles (distinct from exosomes and apoptotic bodies), which induce proliferation in neighboring cells upon contact. We provide visual evidence of CPS by videomicroscopy...
June 19, 2017: Developmental Cell
https://www.readbyqxmd.com/read/28630101/oviduct-extracellular-vesicles-protein-content-and-their-role-during-oviduct-embryo-cross-talk
#10
Carmen Alminana, Emilie Corbin, Guillaume Tsikis, Agostinho S Alcantara-Neto, Valérie Labas, Karine Reynaud, Laurent Galio, Rustem Uzbekov, Anastasiia S Garanina, Xavier Druart, Pascal Mermillod
Successful pregnancy requires an appropriate communication between the mother and the embryo. Recently, exosomes and microvesicles, both membrane-bound extracellular vesicles (EVs) present in the oviduct fluid have been proposed as key modulators of this unique cross-talk. However, little is known about their content and their role during oviduct-embryo dialogue. Given the known differences in secretions by in vivo and in vitro oviduct epithelial cells (OEC), we aimed at deciphering the oviduct EVs protein content from both sources...
June 19, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28627682/microvesicles-released-from-human-embryonic-stem-cell-derived-mesenchymal-stem-cells-inhibit-proliferation-of-leukemia-cells
#11
Yuan Ji, Yongbin Ma, Xiang Chen, Xianyan Ji, Jianyi Gao, Lei Zhang, Kai Ye, Fuhao Qiao, Yao Dai, Hui Wang, Xiangmei Wen, Jiang Lin, Jiabo Hu
Human embryonic stem cell derived-mesenchymal stem cells (hESC‑MSCs) are able to inhibit proliferation of leukemia cells. Microvesicles released from human embryonic stem cell derived-mesenchymal stem cells (hESC‑MSC‑MVs) might play an important part in antitumor activity. Microvesicles were isolated by ultracentrifugation and identified under a scanning electron microscopy and transmission electron microscope separately. After 48-h cocultured with hESC‑MSCs and hESC‑MSC‑MVs, the number of K562 and HL60 was counted and tumor cell viability was measured by CCK8 assay...
June 16, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28623979/placental-glucose-transporter-glut-1-is-down-regulated-in-preeclampsia
#12
Benjamin P Lüscher, Camilla Marini, Marianne S Joerger-Messerli, Xiao Huang, Matthias A Hediger, Christiane Albrecht, Marc U Baumann, Daniel V Surbek
INTRODUCTION: Transplacental fetal glucose supply is predominantly regulated by glucose transporter-1 (GLUT1). Altered expression and/or function of GLUT1 may affect the intrauterine environment, which could compromise fetal development and may contribute to fetal programming. To date it is unknown whether placental GLUT1 is affected by preeclampsia, which is often associated with intrauterine growth restriction (IUGR). We addressed the hypothesis that preeclampsia leads to decreased expression and function of placental GLUT1...
July 2017: Placenta
https://www.readbyqxmd.com/read/28623398/endothelial-vascular-markers-in-coronary-surgery
#13
Diana M Valencia-Nuñez, Willy Kreutler, Javier Moya-Gonzalez, Pedro Alados-Arboledas, Ignacio Muñoz-Carvajal, Andrés Carmona, Rafael Ramirez-Chamond, Julia Carracedo-Añon
Coronary heart disease is associated with high morbidity and mortality. Endothelial dysfunction in affected patients is linked to long-term atherosclerotic disease progression and cardiovascular event rates. The present paper reports on changes in the levels of endothelial progenitor cells (VEGFR2/CD133/CD34), essential for endothelial repair, and of endothelial microvesicles (CD31/annexin V) as indicators of endothelial lesion, in patients undergoing coronary bypass surgery with respect both to baseline levels and to counts in healthy subjects...
June 16, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28607124/placental-vesicles-carry-active-endothelial-nitric-oxide-synthase-and-their-activity-is-reduced-in-preeclampsia
#14
Carolina Motta-Mejia, Neva Kandzija, Wei Zhang, Vuyane Mhlomi, Ana Sofia Cerdeira, Alexandra Burdujan, Dionne Tannetta, Rebecca Dragovic, Ian L Sargent, Christopher W Redman, Uday Kishore, Manu Vatish
Preeclampsia, a multisystem hypertensive disorder of pregnancy, is associated with increased systemic vascular resistance. Placentae from patients with preeclampsia have reduced levels of endothelial nitric oxide synthase (eNOS) and, thus, less nitric oxide (NO). Syncytiotrophoblast extracellular vesicles (STBEV), comprising microvesicles (STBMV) and exosomes, carry signals from the syncytiotrophoblast to the mother. We hypothesized that STBEV-bound eNOS (STBEV-eNOS), capable of producing NO, are released into the maternal circulation...
June 12, 2017: Hypertension
https://www.readbyqxmd.com/read/28606448/platelet-transfusion-in-thrombocytopenic-cancer-patients-sometimes-justified-but-likely-insidious
#15
REVIEW
Thierry Burnouf, Mohamed Elemary, Julia Radosevic, Jerard Seghatchian, Hadi Goubran
The transfusion of platelet concentrates prepared from allogeneic single or pooled donations is a standard procedure in transfusion medicine to stop or prevent bleeding in cancer patients with thrombocytopenia undergoing surgery, chemotherapy and/or radiotherapy. While platelet transfusion may appear reasonable in many instances, greater scientific and medical attention should however be given to the possibly insidious impact of transfused platelets on the outcome of cancers. Indeed platelets and the microvesicles they release possess all the biological ingredients capable of supporting tumor growth, protecting circulating tumor cells, and to contributing to metastatic invasion...
May 26, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28604841/evaluation-of-potential-changes-in-liver-and-lung-tissue-of-rats-in-an-ischemia-reperfusion-injury-model-modified-pringle-maneuver
#16
Silvio Henrique Freitas, Renata G S Dória, Rachel S Bueno, William B Rocha, Jair R E Filho, Julieta R E Moraes, Atanásio Serafin Vidane, Carlos E Ambrósio
In surgical procedures involving the liver, such as transplantation, resection, and trauma, a temporary occlusion of hepatic vessels may be required. This study was designed to analyze the lesions promoted by ischemia and reperfusion injury of the hepatic pedicle, in the liver and lung, using histopathological and immunohistochemical techniques. In total, 39 Wistar rats were divided into four groups: control group (C n = 3) and ischemia groups subjected to 10, 20, and 30 minutes of hepatic pedicle clamping (I10, n = 12; I20, n = 12; I30, n = 12)...
2017: PloS One
https://www.readbyqxmd.com/read/28601907/high-glucose-increases-the-formation-and-pro-oxidative-activity-of-endothelial-microparticles
#17
Dylan Burger, Maddison Turner, Fengxia Xiao, Mercedes N Munkonda, Shareef Akbari, Kevin D Burns
AIMS/HYPOTHESIS: Individuals with diabetes exhibit increases in circulating endothelial microparticles (eMPs, also referred to as endothelial microvesicles), which are associated with endothelial dysfunction and a heightened risk of cardiovascular complications. We have shown that eMPs are markers and mediators of vascular injury although their role in diabetes is unclear. We hypothesised that the composition and biological activity of eMPs are altered in response to high glucose exposure...
June 10, 2017: Diabetologia
https://www.readbyqxmd.com/read/28600979/circulating-microvesicle-number-function-and-small-rna-content-vary-with-age-gender-smoking-status-lipid-and-hormone-profiles
#18
Anoop K Enjeti, Anita Ariyarajah, Angel D'Crus, Michael Seldon, Lisa F Lincz
BACKGROUND: Characterization of circulating microvesicles (MV) in healthy subjects in relation to various biological factors is not well studied. OBJECTIVES: We evaluated the influence of age, gender, smoking status, lipid and hormone profiles on circulating MV in healthy subjects. METHODS: Platelet free plasma from 143 volunteer blood donors (males=80, females=63) was evaluated by standardized flow cytometry for MV expressing CD41 (platelet-derived), CD105 (endothelial-derived), CD235 (red cell-derived), TF (tissue factor) and phosphatidylserine (PS) MV...
April 20, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28600520/reg3%C3%AE-modifies-cell-tumor-function-by-impairing-extracellular-vesicle-uptake
#19
Laia Bonjoch, Meritxell Gironella, Juan Lucio Iovanna, Daniel Closa
Extracellular vesicles (EVs), including exosomes and microvesicles, are nano-sized membrane vesicles containing proteins and nucleic acids, which act as intercellular messengers. They play an important role in a variety of physiological processes, as well as in pathological situations such as inflammation or cancer. Here, we show that in the case of pancreatic ductal adenocarcinoma (PDAC), the healthy pancreatic tissue surrounding the tumor releases REG3β, a lectin that binds to the glycoproteins present in the surface of EVs, thus interfering with their uptake and internalization by target cells...
June 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28592554/urinary-glycated-uromodulin-in-diabetic-kidney-disease
#20
Chia-Chu Chang, Chen-Yu Chen, Ching-Hui Huang, Chia-Lin Wu, Hung-Ming Wu, Ping-Fang Chiu, Chew-Teng Kor, Ting-Huan Chen, Geen-Dong Chang, Cheng-Chin Kuo, Hui-Chin Wen, Chih-Yang Huang, Chung-Ho Chang
Advanced glycation end products (AGEs) form during oxidative stress, which is increased in diabetes mellitus (DM). Uromodulin is a protein with a renal protective effect, and may be subject to glycation. The implications of uromodulin glycation and AGEs in the urine are not understood. Here, immunoprecipitation and liquid chromatography-mass spectrometry identified glycated uromodulin (glcUMOD) in the urine of 62.5% of patients with diabetic kidney disease (DKD), 20.0% of patients with non-diabetic chronic kidney disease (CKD) but non-DM, and no DM patients with normal renal function or healthy control participants; a finding replicated in a larger cohort of 84 patients with CKD in a case-control study (35 with DM, 49 without)...
June 7, 2017: Clinical Science (1979-)
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