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Connective tissue disease

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https://www.readbyqxmd.com/read/28435465/hypertension-cerebrovascular-impairment-and-cognitive-decline-in-aged-a%C3%AE-pp-ps1-mice
#1
Maximilian Wiesmann, Valerio Zerbi, Diane Jansen, Dieter Lütjohann, Andor Veltien, Arend Heerschap, Amanda J Kiliaan
Cardiovascular risk factors, especially hypertension, are also major risk factors for Alzheimer's disease (AD). To elucidate the underlying vascular origin of neurodegenerative processes in AD, we investigated the relation between systolic blood pressure (SBP) cerebral blood flow (CBF) and vasoreactivity with brain structure and function in a 16-18 months old double transgenic AβPPswe/PS1dE9 (AβPP/PS1) mouse model for AD. These aging AβPP/PS1 mice showed an increased SBP linked to a declined regional CBF...
2017: Theranostics
https://www.readbyqxmd.com/read/28433388/magnetic-resonance-and-diffusion-tensor-imaging-analyses-indicate-heterogeneous-strains-along-human-medial-gastrocnemius-fascicles-caused-by-submaximal-plantar-flexion-activity
#2
Agah Karakuzu, Uluç Pamuk, Cengizhan Ozturk, Burak Acar, Can A Yucesoy
Sarcomere length changes are central to force production and excursion of skeletal muscle. Previous modeling indicates non-uniformity of that if mechanical interaction of muscle with its surrounding muscular and connective tissues is taken into account. Hence, quantifying length changes along the fascicles of activated human muscle in vivo is crucial, but this is lacking due to technical complexities. Combining magnetic resonance imaging deformation analyses and diffusion tensor imaging tractography, the aim was to test the hypothesis that submaximal plantar flexion activity at 15% MVC causes heterogeneous length changes along the fascicles of human medial gastrocnemius (GM) muscle...
April 9, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28430289/evidence-from-spatial-pattern-analysis-for-the-anatomical-spread-of-%C3%AE-synuclein-pathology-in-parkinson-s-disease-dementia
#3
Richard A Armstrong
<i>The objective of this study was to determine whether there is evidence from quantitative morphometry and spatial pattern analysis to support the hypothesis of anatomical spread of -synuclein in Parkinson's disease dementia (PDD). Hence, clustering of -synuclein-immunoreactive Lewy bodies (LB), Lewy neurites (LN), and Lewy grains (LG) was studied in -synuclein-immunolabeled sections of cortical and limbic regions in 12 cases of PDD. The data suggested that: (1) LB, LN, and LG occurred in clusters which in 63% of regions were regularly distributed parallel to the tissue boundary, (2) in approximately 30% of cortical regions, the estimated cluster size of LB, LN, and LG was within the size range of cellular columns associated with the cortico-cortical pathways, (3) regularly distributed clusters were present in anatomically connected regions, and (4) the clustering pattern was similar to that of prion protein (PrPsc) deposits in Creutzfeldt-Jacob disease (CJD)...
2017: Folia Neuropathologica
https://www.readbyqxmd.com/read/28429161/on-the-in-vivo-function-of-the-mitral-heart-valve-leaflet-insights-into-tissue-interstitial-cell-biomechanical-coupling
#4
Chung-Hao Lee, Will Zhang, Kristen Feaver, Robert C Gorman, Joseph H Gorman, Michael S Sacks
There continues to be a critical need for developing data-informed computational modeling techniques that enable systematic evaluations of mitral valve (MV) function. This is important for a better understanding of MV organ-level biomechanical performance, in vivo functional tissue stresses, and the biosynthetic responses of MV interstitial cells (MVICs) in the normal, pathophysiological, and surgically repaired states. In the present study, we utilized extant ovine MV population-averaged 3D fiducial marker data to quantify the MV anterior leaflet (MVAL) deformations in various kinematic states...
April 20, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28428687/lysyl-oxidase-its-diversity-in-health-and-diseases
#5
REVIEW
Suchitra Kumari, Tarun Kumar Panda, Tapaswini Pradhan
The mechanical properties of extracellular matrix (ECM) and connective tissues is largely dependent on the collagen and elastin structure. Lysyl oxidase (LOX) plays a critical role in the formation and repair of the ECM by oxidizing lysine residues in elastin and collagen, thereby initiating the formation of covalent cross linkages which stabilize these fibrous proteins. Due to its multiple functions both extracellularly and intracellularly, lysyl oxidase is involved in several processes in the tumorigenic pathway, in many different cancer types and stages...
June 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28426484/connective-tissue-nevi-a-review-of-the-literature
#6
Harleen Arora, Leyre Falto-Aizpurua, Andrea Cortés-Fernandez, Sonal Choudhary, Paolo Romanelli
Connective tissue nevi (CTN) are hamartomas of the dermis, with the 3 main components being collagen, elastin, and proteoglycans. Each subtype can present as a solitary lesion or multiple lesions. They could present as part of systemic diseases or inherited disorders. This article provides a comprehensive literature review of the different types of CTN, their clinical presentations, associations, and treatment options. Treatment options for 56 lesions were reviewed. Fifty-two percent of lesions were present in males, and the age range at the time of presentation was wide (1...
May 2017: American Journal of Dermatopathology
https://www.readbyqxmd.com/read/28425619/analysis-of-mutations-in-the-sos-1-gene-in-two-polish-families-with-hereditary-gingival-fibromatosis
#7
Katarzyna Gawron, Grzegorz Bereta, Zuzanna Nowakowska, Katarzyna Łazarz-Bartyzel, Jan Potempa, Maria Chomyszyn-Gajewska, Renata Górska, Paweł Plakwicz
OBJECTIVES: To establish whether two families from Malopolska and Mazovia Provinces in Poland are affected by hereditary gingival fibromatosis type 1, caused by a single-cytosine insertion in exon 21 of the Son-of-Sevenless-1 gene. MATERIAL AND METHODS: Six subjects with hereditary gingival fibromatosis and five healthy subjects were enrolled in the study. Gingival biopsies were collected during gingivectomy or tooth extraction and used for histopathological evaluation...
April 20, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28425503/nerve-degeneration-and-regeneration-in-the-cephalopod-mollusc-octopus-vulgaris-the-case-of-the-pallial-nerve
#8
Pamela Imperadore, Sameer B Shah, Helen P Makarenkova, Graziano Fiorito
Regeneration is a process that restores structure and function of tissues damaged by injury or disease. In mammals complete regeneration is often unsuccessful, while most of the low phyla animals can re-grow many parts of their body after amputation. Cephalopod molluscs, and in particular Octopus vulgaris, are well known for their capacity to regenerate their arms and other body parts, including central and peripheral nervous system. To better understand the mechanism of recovery following nerve injury in this species we investigated the process of axon regrowth and nerve regeneration after complete transection of the Octopus pallial nerves...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28425346/ambrisentan-a-review-of-its-use-in-pulmonary-arterial-hypertension
#9
Belinda N Rivera-Lebron, Michael G Risbano
Pulmonary arterial hypertension (PAH) is a progressive disease defined by an elevation in pulmonary arterial pressure that can lead to right heart failure and death. Ambrisentan is a selective endothelin receptor antagonist approved for the treatment of idiopathic, heritable PAH and connective tissue disease-associated PAH. Ambrisentan has been shown to improve exercise capacity and hemodynamics with an acceptable side-effect profile. It has also proven to be safely used in combination with other PAH-specific medications, especially with phosphodiesterase-5 inhibitors...
April 1, 2017: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/28425227/primary-sj%C3%A3-gren-s-syndrome-in-patients-with-celiac-disease
#10
Funda Erbasan, Deniz Turgut Çoban, Uğur Karasu, Yeşim Çekin, Bayram Yeşil, Ayhan Hilmi Çekin, Dinç Süren, Mustafa Ender Terzioğlu
BACKGROUND/AIM: Many autoimmune diseases occur concomitantly with celiac disease (CD). We aimed to determine the frequency of Sjögren's syndrome (SS) in CD patients based on SS-specific serology verified by minor labial salivary biopsy. MATERIALS AND METHODS: Eight-two patients with CD were included in the study. After examination for objective evidence of sicca complex, all patients were tested for serological presence of rheumatoid factor (RF) and antinuclear antibodies (ANAs) and for ANA profile...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28424927/development-of-new-extra-glandular-manifestations-or-associated-auto-immune-diseases-after-establishing-the-diagnosis-of-primary-sj%C3%A3-gren-s-syndrome-a-long-term-study-of-the-antonius-nieuwegein-sj%C3%A3-gren-ans-cohort
#11
E J Ter Borg, J C Kelder
To investigate in a long-term study, the development of new extra-glandular manifestations (EGM) or associated auto-immune diseases (AID) from 1 year after establishing the diagnosis of primary Sjögren's syndrome (pSS). The primary goal was to examine the frequency and type of these manifestations and to find out which demographic, clinical and serological profile was most at risk. All outpatients diagnosed with primary Sjögren's syndrome were included in a retrospective study, with at least one check-up per year, from June 1991 until August 2015...
April 19, 2017: Rheumatology International
https://www.readbyqxmd.com/read/28424599/electrophysiological-sequelae-of-hemispherotomy-in-ipsilateral-human-cortex
#12
Ammar H Hawasli, Ravi Chacko, Nicholas P Szrama, David T Bundy, Mrinal Pahwa, Chester K Yarbrough, Brian J Dlouhy, David D Limbrick, Dennis L Barbour, Matthew D Smyth, Eric C Leuthardt
Objectives: Hemispheric disconnection has been used as a treatment of medically refractory epilepsy and evolved from anatomic hemispherectomy to functional hemispherectomies to hemispherotomies. The hemispherotomy procedure involves disconnection of an entire hemisphere with limited tissue resection and is reserved for medically-refractory epilepsy due to diffuse hemispheric disease. Although it is thought to be effective by preventing seizures from spreading to the contralateral hemisphere, the electrophysiological effects of a hemispherotomy on the ipsilateral hemisphere remain poorly defined...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28421658/transcriptional-signatures-of-connectomic-subregions-of-the-human-striatum
#13
Linden Parkes, Ben Fulcher, Murat Yücel, Alex Fornito
Functionally distinct regions of the brain are thought to possess a characteristic connectional fingerprint - a profile of incoming and outgoing connections that defines the function of that area. This observation has motivated efforts to subdivide brain areas using their connectivity patterns. However, it remains unclear whether these connectomically-defined subregions can be distinguished at the molecular level. Here, we combine high-resolution diffusion-weighted magnetic resonance imaging with transcriptomic data to show that connectomically-defined subregions of the striatum carry distinct transcriptional signatures...
April 19, 2017: Genes, Brain, and Behavior
https://www.readbyqxmd.com/read/28418945/tendonitis-and-tendon-rupture-after-treatment-with-rituximab-a-case-series
#14
Ali Alqahtani, Marwa Sabha, Thaer Abdelfattah, Khaled Srour, Turki Dhayihi, Bashar Kahaleh, Nezam Altorok
CLINICAL DATA: Rituximab is a mouse/human chimeric anti-CD20 IgG1 monoclonal antibody used to treat cancer and autoimmune conditions. Side effects of rituximab include fever, rash, cytopenia and hypotension, back pain, arthralgia, and myalgia. Here, we report on 3 patients who developed moderate to severe tendonitis after the second infusion of rituximab. THERAPEUTIC CHALLENGE: We report 3 patients who developed tendonitis after the second infusion of rituximab...
April 14, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28418430/wat-on-a-chip-a-physiologically-relevant-microfluidic-system-incorporating-white-adipose-tissue
#15
Peter Loskill, Thiagarajan Sezhian, Kevin M Tharp, Felipe T Lee-Montiel, Shaheen Jeeawoody, Willie Mae Reese, Peter-James H Zushin, Andreas Stahl, Kevin E Healy
Organ-on-a-chip systems possess a promising future as drug screening assays and as testbeds for disease modeling in the context of both single-organ systems and multi-organ-chips. Although it comprises approximately one fourth of the body weight of a healthy human, an organ frequently overlooked in this context is white adipose tissue (WAT). WAT-on-a-chip systems are required to create safety profiles of a large number of drugs due to their interactions with adipose tissue and other organs via paracrine signals, fatty acid release, and drug levels through sequestration...
April 18, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28416697/small-molecule-mediated-inhibition-of-myofibroblast-transdifferentiation-for-the-treatment-of-fibrosis
#16
Michael J Bollong, Baiyuan Yang, Naja Vergani, Brittney A Beyer, Emily N Chin, Claudio Zambaldo, Danling Wang, Arnab K Chatterjee, Luke L Lairson, Peter G Schultz
Fibrosis, a disease in which excessive amounts of connective tissue accumulate in response to physical damage and/or inflammatory insult, affects nearly every tissue in the body and can progress to a state of organ malfunction and death. A hallmark of fibrotic disease is the excessive accumulation of extracellular matrix-secreting activated myofibroblasts (MFBs) in place of functional parenchymal cells. As such, the identification of agents that selectively inhibit the transdifferentiation process leading to the formation of MFBs represents an attractive approach for the treatment of diverse fibrosis-related diseases...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28414186/a-review-on-neuroimaging-based-classification-studies-and-associated-feature-extraction-methods-for-alzheimer-s-disease-and-its-prodromal-stages
#17
REVIEW
Saima Rathore, Mohamad Habes, Muhammad Aksam Iftikhar, Amanda Shacklett, Christos Davatzikos
Neuroimaging has made it possible to measure pathological brain changes associated with Alzheimer's disease (AD) in vivo. Over the past decade, these measures have been increasingly integrated into imaging signatures of AD by means of classification frameworks, offering promising tools for individualized diagnosis and prognosis. We reviewed neuroimaging-based studies for AD classification and mild cognitive impairment, selected after online database searches in Google Scholar and PubMed (January, 1985 to June, 2016)...
April 13, 2017: NeuroImage
https://www.readbyqxmd.com/read/28413459/expression-levels-of-tgf-%C3%AE-1-and-ctgf-are-associated-with-the-severity-of-duchenne-muscular-dystrophy
#18
Yanmin Song, Shuai Yao, Yunhai Liu, Lili Long, Huan Yang, Qiuxiang Li, Jinghui Liang, Xinxin Li, Yuling Lu, Haoran Zhu, Ning Zhang
The present study aimed to analyze the association of transforming growth factor-β1 (TGF-β1) and connective tissue growth factor (CTGF) expression levels in skeletal muscle with the clinical manifestation of Duchenne muscular dystrophy (DMD). A total of 18 cases of DMD, which were confirmed by routine pathological diagnosis were recruited into the present study, along with 8 subjects who suffered from acute trauma but did not present any neuromuscular diseases and were enrolled as the healthy controls. Immunohistochemical staining was used to detect the expression levels of CTGF and TGF-β1 in muscle biopsy specimens...
April 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28412863/oxidized-lipoprotein-lipids-and-atherosclerosis
#19
Markku Ahotupa
Plasma lipoproteins contain variable amounts of lipid oxidation products (LOP), which are known to impair normal physiological functions and stimulate atherosclerotic processes. Recent evidence indicate that plasma lipoproteins are active carriers of LOP, LDL directing transport towards peripheral tissues, and HDL being active in the reverse transport. It has been proposed that the lipoprotein -specific transport of LOP could play a role in atherosclerosis -related effects of LDL and HDL. This article gives an overview of the present knowledge of lipoprotein LOP transport and its association with the risk of atherosclerosis and cardiovascular diseases (CVD)...
April 17, 2017: Free Radical Research
https://www.readbyqxmd.com/read/28412087/pregestational-type-2-diabetes-mellitus-induces-cardiac-hypertrophy-in-the-murine-embryo-through-cardiac-remodeling-and-fibrosis
#20
Xue Lin, Penghua Yang, E Albert Reece, Peixin Yang
BACKGROUND: Cardiac hypertrophy is highly prevalent in patients with type 2 diabetes mellitus (T2DM). Experimental evidence has implied that pregnant women with T2DM and their children are at an increased risk of cardiovascular diseases. Our previous mouse model study has revealed that maternal T2DM induces structural heart defects in their offspring. OBJECTIVE: The present study aims to determine whether maternal T2DM induces embryonic heart hypertrophy in a murine model of diabetic embryopathy...
April 12, 2017: American Journal of Obstetrics and Gynecology
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