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https://www.readbyqxmd.com/read/28344207/dipeptidyl-peptidase-iv-inhibition-for-the-treatment-of-cardiovascular-disease%C3%A3-recent-insights-focusing-on-angiogenesis-and-neovascularization
#1
Yanna Lei, Lina Hu, Guang Yang, Limei Piao, Minggen Jin, Xianwu Cheng
Dipeptidyl peptidase IV (DPP-IV) is a complex enzyme that acts as a membrane-anchored cell surface exopeptidase and transmits intracellular signals through a small intracellular tail. DPP-IV exists in human blood in a soluble form, and truncates a large number of peptide hormones, chemokines, cytokines, and growth factors in vitro and in vivo. DPP-IV has gained considerable interest as a therapeutic target, and a variety of DPP-IV inhibitors that prolong the insulinotropic effects of glucagon-like peptide-1 (GLP-1) are widely used in clinical settings as antidiabetic drugs...
March 25, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28343901/gper-blockers-as-nox-downregulators-a-new-drug-class-to-target-chronic-non-communicable-diseases
#2
Matthias R Meyer, Matthias Barton
Oxidative stress is a hallmark of chronic non-communicable diseases such as arterial hypertension, diabetes, coronary artery disease, and stroke. Cardiovascular diseases are characterized by increased production of reactive oxygen species (ROS) by NAPDH oxidase 1 (Nox1) and additional Nox isoforms among other sources. Activation of the G protein-coupled estrogen receptor (GPER) can mediate multiple salutary effects on the cardiovascular system. However, GPER also has constitutive activity, e.g. in the absence of specific agonists, that was recently shown to promote hypertension and aging-induced tissue damage by enabling Nox1-derived production of ROS...
March 23, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28343225/clinical-trial-of-vadadustat-in-patients-with-anemia-secondary-to-stage-3-or-4-chronic-kidney-disease
#3
Edouard R Martin, Mark T Smith, Bradley J Maroni, Qing C Zuraw, Emil M deGoma
BACKGROUND: Therapeutic options for the treatment of anemia secondary to chronic kidney disease (CKD) remain limited. Vadadustat (AKB-6548) is an oral hypoxia-inducible factor prolyl-hydroxylase domain (HIF-PHD) inhibitor that is being investigated for the treatment of anemia secondary to CKD. METHODS: A phase 2a, multicenter, randomized, double-blind, placebo-controlled, dose-ranging trial (NCT01381094) was undertaken in adults with anemia secondary to CKD stage 3 or 4...
March 25, 2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28335021/mri-visible-perivascular-space-location-is-associated-with-alzheimer-s-disease-independently-of-amyloid-burden
#4
Gargi Banerjee, Hee Jin Kim, Zoe Fox, H Rolf Jäger, Duncan Wilson, Andreas Charidimou, Han Kyu Na, Duk L Na, Sang Won Seo, David J Werring
Perivascular spaces that are visible on magnetic resonance imaging (MRI) are a neuroimaging marker of cerebral small vessel disease. Their location may relate to the type of underlying small vessel pathology: those in the white matter centrum semi-ovale have been associated with cerebral amyloid angiopathy, while those in the basal ganglia have been associated with deep perforating artery arteriolosclerosis. As cerebral amyloid angiopathy is an almost invariable pathological finding in Alzheimer's disease, we hypothesized that MRI-visible perivascular spaces in the centrum semi-ovale would be associated with a clinical diagnosis of Alzheimer's disease, whereas those in the basal ganglia would be associated with subcortical vascular cognitive impairment...
February 17, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334869/emerging-concepts-in-sporadic-cerebral-amyloid-angiopathy
#5
Andreas Charidimou, Gregoire Boulouis, M Edip Gurol, Cenk Ayata, Brian J Bacskai, Matthew P Frosch, Anand Viswanathan, Steven M Greenberg
Sporadic cerebral amyloid angiopathy is a common, well-defined small vessel disease and a largely untreatable cause of intracerebral haemorrhage and contributor to age-related cognitive decline. The term 'cerebral amyloid angiopathy' now encompasses not only a specific cerebrovascular pathological finding, but also different clinical syndromes (both acute and progressive), brain parenchymal lesions seen on neuroimaging and a set of diagnostic criteria-the Boston criteria, which have resulted in increasingly detected disease during life...
March 13, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28333647/automatic-choroidal-layer-segmentation-using-markov-random-field-and-level-set-method
#6
Chuang Wang, Yongmin Li, Ya Xing Wang
The choroid is an important vascular layer that supplies oxygen and nourishment to the retina. The changes in thickness of the choroid have been hypothesised to relate to a number of retinal diseases in the pathophysiology. In this work, an automatic method is proposed for segmenting the choroidal layer from macular images by using the level set framework. The 3D nonlinear anisotropic diffusion filter is used to remove all the OCT imaging artifacts including the speckle noise and to enhance the contrast. The distance regularisation and edge constraint terms are embedded into the level set method to avoid the irregular and small regions and keep information about the boundary between the choroid and sclera...
March 20, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28333356/the-safety-and-efficacy-of-controlled-ovarian-hyperstimulation-for-fertility-preservation-in-women-with-early-breast-cancer-a-systematic-review
#7
Rachael J Rodgers, Geoffrey D Reid, Juliette Koch, Rebecca Deans, William L Ledger, Michael Friedlander, Robert B Gilchrist, Kirsty A Walters, Jason A Abbott
STUDY QUESTION: Can controlled ovarian hyperstimulation (COH) for fertility preservation be effectively conducted in women with breast cancer without worsening their prognosis? SUMMARY ANSWER: COH with co-administration of letrozole suppresses oestradiol levels without significantly impacting oocyte yield or decreasing disease-free survival rates. WHAT IS KNOWN ALREADY: Oestradiol has the capacity to stimulate the proliferation of breast cancer cells...
February 27, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28333208/soluble-vcam-1-soluble-icam-1-ratio-is-a-promising-biomarker-for-diagnosing-endometriosis
#8
L Kuessel, R Wenzl, K Proestling, S Balendran, P Pateisky, Yotova, G Yerlikaya, B Streubel, H Husslein
STUDY QUESTION: Do cell adhesion molecules play a role in endometriosis, and can they be used as a biomarker for diagnosing endometriosis? SUMMARY ANSWER: Altered expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular adhesion molecule-1 (ICAM-1) in the endometrium and peritoneum may play a key role in endometriosis and the soluble VCAM-1/soluble ICAM-1 ratio is a promising biomarker. WHAT IS KNOWN ALREADY: Cell adhesion molecules are cell surface proteins that mediate cellular adherence, inflammatory and immune responses, and cancer-related biological processes...
February 23, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28330942/primary-angiitis-of-the-central-nervous-system-magnetic-resonance-imaging-spectrum-of-parenchymal-meningeal-and-vascular-lesions-at-baseline
#9
Grégoire Boulouis, Hubert de Boysson, Mathieu Zuber, Loïc Guillevin, Eric Meary, Vincent Costalat, Christian Pagnoux, Olivier Naggara
BACKGROUND AND PURPOSE: Primary angiitis of the central nervous system remains challenging. To report an overview and pictorial review of brain magnetic resonance imaging findings in adult primary angiitis of the central nervous system and to determine the distribution of parenchymal, meningeal, and vascular lesions in a large multicentric cohort. METHODS: Adult patients from the French COVAC cohort (Cohort of Patients With Primary Vasculitis of the Central Nervous System), with biopsy or angiographically proven primary angiitis of the central nervous system and brain magnetic resonance imaging available at the time of diagnosis were included...
March 22, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28329380/subclinical-thyroid-dysfunction-and-cardiovascular-diseases-2016-update
#10
Carmen Floriani, Baris Gencer, Tinh-Hai Collet, Nicolas Rodondi
Subclinical thyroid dysfunction comprises subclinical hypothyroidism (SHypo), defined as elevated thyroid-stimulating hormone (TSH) by normal free thyroxine (FT4), and subclinical hyperthyroidism (SHyper) with decreased or undetectable TSH and normal FT4. Up to 10% of the elderly have SHypo, which is usually asymptomatic. Individual participant data (IPD) analyses of prospective cohort studies from the international Thyroid Studies Collaboration show that SHypo is associated with increased coronary heart disease (CHD) mortality [hazard ratio (HR) 1,58 for TSH ≥ 10 mIU/L, 95% CI 1...
February 27, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28329254/periodic-limb-movements-and-white-matter-hyperintensities-in-first-ever-minor-stroke-or-high-risk-tia
#11
Mark I Boulos, Brian J Murray, Ryan T Muir, Fuqiang Gao, Gregory M Szilagyi, Menal Huroy, Alexander Kiss, Arthur S Walters, Sandra E Black, Andrew S Lim, Richard H Swartz
Study Objectives: Emerging evidence suggests that periodic limb movements (PLMs) may contribute to the development of cerebrovascular disease. White matter hyperintensities (WMHs), a widely accepted biomarker for cerebral small vessel disease, are associated with incident stroke and death. We evaluated the association between increased PLM indices and WMH burden in patients presenting with stroke or transient ischemic attack (TIA), while controlling for vascular risk factors and stroke severity...
December 29, 2016: Sleep
https://www.readbyqxmd.com/read/28323826/apoe-related-risk-of-mild-cognitive-impairment-and-dementia-for-prevention-trials-an-analysis-of-four-cohorts
#12
Jing Qian, Frank J Wolters, Alexa Beiser, Mary Haan, M Arfan Ikram, Jason Karlawish, Jessica B Langbaum, John M Neuhaus, Eric M Reiman, J Scott Roberts, Sudha Seshadri, Pierre N Tariot, Beth McCarty Woods, Rebecca A Betensky, Deborah Blacker
BACKGROUND: With the onset of prevention trials for individuals at high risk for Alzheimer disease, there is increasing need for accurate risk prediction to inform study design and enrollment, but available risk estimates are limited. We developed risk estimates for the incidence of mild cognitive impairment (MCI) or dementia among cognitively unimpaired individuals by APOE-e4 dose for the genetic disclosure process of the Alzheimer's Prevention Initiative Generation Study, a prevention trial in cognitively unimpaired APOE-e4/e4 homozygote individuals...
March 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28323163/cerebrospinal-and-interstitial-fluid-transport-via-the-glymphatic-pathway-modeled-by-optimal-mass-transport
#13
Vadim Ratner, Yi Gao, Hedok Lee, Rena Elkin, Maiken Nedergaard, Helene Benveniste, Allen Tannenbaum
The glymphatic pathway is a system which facilitates continuous cerebrospinal fluid (CSF) and interstitial fluid (ISF) exchange and plays a key role in removing waste products from the rodent brain. Dysfunction of the glymphatic pathway may be implicated in the pathophysiology of Alzheimer's disease. Intriguingly, the glymphatic system is most active during deep wave sleep general anesthesia. By using paramagnetic tracers administered into CSF of rodents, we previously showed the utility of MRI in characterizing a macroscopic whole brain view of glymphatic transport but we have yet to define and visualize the specific flow patterns...
March 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28320141/functional-magnetic-resonance-imaging-responses-in-cadasil
#14
Ikreet Cheema, Aaron R Switzer, Cheryl R McCreary, Michael D Hill, Richard Frayne, Bradley G Goodyear, Eric E Smith
OBJECTIVES: The magnitude of the blood oxygen dependent level (BOLD) functional MRI (fMRI) response to visual stimulation is reduced in the small vessel disease cerebral amyloid angiopathy (CAA), reflecting impaired vascular reactivity. We determined whether BOLD responses were reduced in another small vessel disease, cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). METHODS: BOLD fMRI data were collected using a visual stimulus (contrast-reversing checkerboard) and motor task (finger-tapping)...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28318556/natural-killer-cells-in-placentation-and-cancer-implications-for-hypertension-during-pregnancy
#15
Heather Yvonne Small, Denise C Cornelius, Tomasz J Guzik, Christian Delles
Hypertension during pregnancy is the most common medical condition encountered during gestation. Despite this, knowledge of the mechanisms that underlie the disease and the development of new therapies are limited. Hypertension during pregnancy and some forms of cancer confer an increased risk to the development of cardiovascular disease later in life; one mechanism which may link these conditions is the involvement of natural killer (NK) cells. Whilst immunology and immunotherapy are well-developed areas in oncology; the complex mechanisms of the immune system in health and disease at the maternal-fetal interface are less well-defined...
March 7, 2017: Placenta
https://www.readbyqxmd.com/read/28302914/new-insights-into-mechanisms-of-small-vessel-disease-stroke-from-genetics
#16
REVIEW
Rhea Tan, Matthew Traylor, Loes Rutten-Jacobs, Hugh Markus
Cerebral small vessel disease (SVD) is a common cause of lacunar strokes, vascular cognitive impairment (VCI) and vascular dementia. SVD is thought to result in reduced cerebral blood flow, impaired cerebral autoregulation and increased blood-brain barrier (BBB) permeability. However, the molecular mechanisms underlying SVD are incompletely understood. Recent studies in monogenic forms of SVD, such as cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL), and 'sporadic' SVD have shed light on possible disease mechanisms in SVD...
April 1, 2017: Clinical Science (1979-)
https://www.readbyqxmd.com/read/28297758/-role-of-master-transcriptional-factor-prox-1-in-lymphatic-endothelial-differentiation-of-kaposiform-hemangioendothelioma
#17
Z Y Ke, S J Yang
Objective: To analyze the clinical and pathological features of Kaposiform hemangioendothelioma (KHE), and to investigate the role of master transcriptional factor Prox-1 in the regulation of lymphatic differentiation. Methods: Nine cases of KHE (during the period from October 2009 to June 2016) were collected with clinical and pathological data. H&E stained section review and immunohistochemietry using the Dako EnVision method were performed. Results: There were 6 female and 3 male patients with age ranging from 2 months to 8 years (median 3 years and 4 months)...
March 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28297582/human-stem-cell-derived-endothelial-hepatic-platform-for-efficacy-testing-of-vascular-protective-metabolites-from-nutraceuticals
#18
Balakrishnan Chakrapani Narmada, Yeek Teck Goh, Huan Li, Sanjay Sinha, Hanry Yu, Christine Cheung
Atherosclerosis underlies many cardiovascular and cerebrovascular diseases. Nutraceuticals are emerging as a therapeutic moiety for restoring vascular health. Unlike small-molecule drugs, the complexity of ingredients in nutraceuticals often confounds evaluation of their efficacy in preclinical evaluation. It is recognized that the liver is a vital organ in processing complex compounds into bioactive metabolites. In this work, we developed a coculture system of human pluripotent stem cell-derived endothelial cells (hPSC-ECs) and human pluripotent stem cell-derived hepatocytes (hPSC-HEPs) for predicting vascular-protective effects of nutraceuticals...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28296736/dermoscopic-features-of-livedoid-vasculopathy
#19
Stephen Chu-Sung Hu, Gwo-Shing Chen, Chi-Ling Lin, Yang-Chun Cheng, Yung-Song Lin
Livedoid vasculopathy (atrophie blanche) is a form of thrombotic vasculopathy. It is characterized by small ulcers that become crusted, and heal after several months to produce white atrophic scars. The most commonly affected sites are the lower legs, in particular the dorsum of the feet and ankles. To date, the dermoscopic features of livedoid vasculopathy have not been clearly described in the literature. In this observational study, we sought to evaluate the dermoscopic patterns of livedoid vasculopathy and determine whether the dermoscopic features are associated with certain histopathological characteristics...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28295949/portosystemic-shunt-as-a-bridge-to-liver-transplantation-in-infants-a-comparison-of-two-techniques
#20
Dor Yoeli, N Thao N Galván, Daniel J Ashton, Kayla R Kumm, Michael L Kueht, Ellen D Witte, Tamir A Miloh, Ronald T Cotton, Abbas Rana, Christine A O'Mahony, John A Goss
Portosystemic shunts can serve as a bridge to liver transplantation in patients with end-stage liver disease by providing portal decompression to treat life-threatening variceal bleeding and prevent recurrent episodes until an organ becomes available. The conventional TIPS procedure, however, is technically challenging to perform in infants due to the small size of their intrahepatic vasculature. We report two cases of emergent creation of portosystemic shunts as a bridge to liver transplantation in infants with life-threatening variceal bleeding using a conventional TIPS technique in the first case and a percutaneous DIPS technique in the other...
March 13, 2017: Pediatric Transplantation
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