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https://www.readbyqxmd.com/read/28222510/visuospatial-functioning-in-cerebral-amyloid-angiopathy-a-pilot-study
#1
Raffaella Valenti, Andreas Charidimou, Li Xiong, Gregoire Boulouis, Panagiotis Fotiadis, Alison Ayres, Grace Riley, Hugo J Kuijf, Yael D Reijmer, Leonardo Pantoni, M Edip Gurol, Sigurros Davidsdottir, Steven M Greenberg, Anand Viswanathan
Cerebral amyloid angiopathy (CAA) is a contributor to cognitive impairment in the elderly. We hypothesized that the posterior cortical predilection of CAA would cause visual-processing impairment. We systematically evaluated visuospatial abilities in 22 non-demented CAA patients. Neurocognitive evaluation demonstrated visuoperceptual impairment (23% on Benton Facial Recognition Test [BFRT] and 13.6% on Benton Judgment of Line Orientation Test [BJLO]). BFRT was inversely correlated with white matter hyperintensities volume and BJLO with parietal cerebral microbleeds...
February 7, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28197206/survival-after-abdominoperineal-and-sphincter-preserving-resection-in-nonmetastatic-rectal-cancer-a-population-based-time-trend-and-propensity-score-matched-seer-analysis
#2
Rene Warschkow, Sabrina M Ebinger, Walter Brunner, Bruno M Schmied, Lukas Marti
Background. Abdominoperineal resection (APR) has been associated with impaired survival in nonmetastatic rectal cancer patients. It is unclear whether this adverse outcome is due to the surgical procedure itself or is a consequence of tumor-related characteristics. Study Design. Patients were identified from the Surveillance, Epidemiology, and End Results database. The impact of APR compared to coloanal anastomosis (CAA) on survival was assessed by Cox regression and propensity-score matching. Results. In 36,488 patients with rectal cancer resection, the APR rate declined from 31...
2017: Gastroenterology Research and Practice
https://www.readbyqxmd.com/read/28185292/spontaneous-telangiectatic-osteosarcoma-in-a-rhesus-macaque-macaca-mulatta
#3
B Goldschmidt, Miz Calado, F C Resende, R M Caldas, L W Pinto, Caa Lopes, Fgo França, B S Meireles, I V Souza
Osteosarcoma (OS) is the most common type of bone cancer, especially in young. Telangiectatic osteosarcoma (TO) is a rare variant of OS, and hence, its occurrence, presentation, and prognosis are poorly understood. A 4-year-old female rhesus monkey presenting lameness and swelling was examined for a mass on the right humerus. Radiography revealed fracture and disorganized structure of bone tissue. Histopathological examination revealed malignant neoplasm composed of anaplastic osteoblasts, which invaded the bone marrow and surrounded blood-filled cysts in the epiphysis and diaphysis forming septa...
February 10, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28179050/cerebral-amyloid-angiopathy-in-stroke-medicine
#4
Frank Block, Manuel Dafotakis
BACKGROUND: Cerebral amyloid angiopathy (CAA) is a degenerative vasculopathy that is classically associated with lobar intracerebral or sulcal hemorrhage. Its prevalence is estimated at 30% in the seventh decade and 50% in the eighth and ninth decades. In this review, we summarize the risks linked to CAA with respect to the treatment and prevention of stroke. METHODS: This review is based on pertinent publications retrieved by a selective search employing the terms "amyloid cerebral angiopathy," "stroke," "intra - cerebral bleeding," and "acute stroke therapy...
January 20, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28178408/epidemiology-risk-factors-and-clinical-features-of-intracerebral-hemorrhage-an-update
#5
REVIEW
Sang Joon An, Tae Jung Kim, Byung-Woo Yoon
Intracerebral hemorrhage (ICH) is the second most common subtype of stroke and a critical disease usually leading to severe disability or death. ICH is more common in Asians, advanced age, male sex, and low- and middle-income countries. The case fatality rate of ICH is high (40% at 1 month and 54% at 1 year), and only 12% to 39% of survivors can achieve long-term functional independence. Risk factors of ICH are hypertension, current smoking, excessive alcohol consumption, hypocholesterolemia, and drugs. Old age, male sex, Asian ethnicity, chronic kidney disease, cerebral amyloid angiopathy (CAA), and cerebral microbleeds (CMBs) increase the risk of ICH...
January 2017: Journal of Stroke
https://www.readbyqxmd.com/read/28161204/chemical-alternatives-assessment-of-different-flame-retardants-a-case-study-including-multi-walled-carbon-nanotubes-as-synergist
#6
REVIEW
Karin Aschberger, Ivana Campia, Laia Quiros Pesudo, Anita Radovnikovic, Vittorio Reina
Flame retardants (FRs) are a diverse group of chemicals used as additives in a wide range of products to inhibit, suppress, or delay ignition and to prevent the spread of fire. Halogenated FRs (HFRs) are widely used because of their low impact on other material properties and the low loading levels necessary to meet the required flame retardancy. Health and environmental hazards associated with some halogenated FRs have driven research for identifying safer alternatives. A variety of halogen-free FRs are available on the market, including organic (phosphorus and nitrogen based chemicals) and inorganic (metals) materials...
February 1, 2017: Environment International
https://www.readbyqxmd.com/read/28157714/the-role-of-mir-24-as-a-race-related-genetic-factor-in-prostate-cancer
#7
Yutaka Hashimoto, Marisa Shiina, Taku Kato, Soichiro Yamamura, Yuichiro Tanaka, Shahana Majid, Sharanjot Saini, Varahram Shahryari, Priyanka Kulkarni, Pritha Desgupta, Yozo Mitsui, Mitsuho Sumida, Guoren Deng, Laura Tabatabai, Deepak Kumar, Rajvir Dahiya
The incidence of prostate cancer (PCa) among African-Americans (AfA) is significantly higher than Caucasian-Americans (CaA) but the genetic basis for this disparity is not known. To address this problem, we analyzed miRNA expression in AfA (n = 81) and CaA (n = 51) PCa patients. Here, we found that miR-24 is differentially expressed in AfA and CaA PCa patients and attempt to clarify its role in AfA patients. Also, the public sequencing data of the miR-24 promoter confirmed that it was highly methylated and down-regulated in PCa patients...
February 2, 2017: Oncotarget
https://www.readbyqxmd.com/read/28154972/convexity-subarachnoid-haemorrhage-has-a-high-risk-of-intracerebral-haemorrhage-in-suspected-cerebral-amyloid-angiopathy
#8
D Wilson, I C Hostettler, G Ambler, G Banerjee, H R Jäger, D J Werring
The risk of future symptomatic intracerebral haemorrhage (sICH) remains uncertain in patients with acute convexity subarachnoid haemorrhage (cSAH) associated with suspected cerebral amyloid angiopathy (CAA). We assessed the risk of future sICH in patients presenting to our comprehensive stroke service with acute non-traumatic cSAH due to suspected CAA, between 2011 and 2016. We conducted a systematic search and pooled analysis including our cohort and other published studies including similar cohorts. Our hospital cohort included 20 patients (mean age 69 years; 60% male); 12 (60%) had probable CAA, and 6 (30%) had possible CAA according to the modified Boston criteria; two did not meet CAA criteria because of age <55 years, but were judged likely to be due to CAA...
February 2, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28145796/identification-of-neurovascular-changes-associated-with-cerebral-amyloid-angiopathy-from-subject-specific-hemodynamic-response-functions
#9
Rebecca J Williams, Bradley G Goodyear, Stefano Peca, Cheryl R McCreary, Richard Frayne, Eric E Smith, G Bruce Pike
Cerebral amyloid angiopathy (CAA) is a small-vessel disease preferentially affecting posterior brain regions. Recent evidence has demonstrated the efficacy of functional MRI in detecting CAA-related neurovascular injury, however, it is unknown whether such perturbations are associated with changes in the hemodynamic response function (HRF). Here we estimated HRFs from two different brain regions from block design activation data, in light of recent findings demonstrating how block designs can accurately reflect HRF parameter estimates while maximizing signal detection...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28144881/association-of-caa-and-tatc-insertion-deletion-genetic-polymorphisms-in-rtn4-3-utr-with-hepatocellular-carcinoma-risk
#10
NaNa Wang, KeYu Chen, Jia Xu, Fang Yuan, HongYu Li, FengMei Deng, LuShun Zhang
Evidence from recent researchers suggested that RTN4 is a multifunctional gene, including tumor suppression, apoptosis, vascular remodeling, and inhibition of axonal regeneration. The CAA and TATC insertion/deletion polymorphisms (CAA/TATC polymorphisms) of RTN4 3″-untranslated regions (UTRs) have been linked to cervical squamous cell carcinoma (CSCC), uterine leiomyomas (UL) and non-small cell lung cancer (NSCLC). However, the association between these two polymorphisms sites with Hepatocellular Carcinoma (HCC) risk was not carry out before...
January 31, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28130469/small-vessel-disease-burden-in-cerebral-amyloid-angiopathy-without-symptomatic-hemorrhage
#11
Gregoire Boulouis, Andreas Charidimou, Michael J Jessel, Li Xiong, Duangnapa Roongpiboonsopit, Panagiotis Fotiadis, Marco Pasi, Alison Ayres, M Emily Merrill, Kristin M Schwab, Jonathan Rosand, M Edip Gurol, Steven M Greenberg, Anand Viswanathan
OBJECTIVE: Cerebral amyloid angiopathy (CAA) is a common age-related small vessel disease (SVD). Patients without intracerebral hemorrhage (ICH) typically present with transient focal neurologic episodes (TFNEs) or cognitive symptoms. We sought to determine if SVD lesion burden differed between patients with CAA first presenting with TFNEs vs cognitive symptoms. METHODS: A total of 647 patients presenting either to a stroke department (n = 205) or an outpatient memory clinic (n = 442) were screened for eligibility...
January 27, 2017: Neurology
https://www.readbyqxmd.com/read/28124041/an-insight-into-the-communication-between-%C3%AE-olefin-phenyl-olefin-mediated-acceptors-and-porphyrin-%C3%AF-system-a-way-to-establish-porphyrin-based-chemodosimeters-and-chemosensors
#12
Mandeep K Chahal, Muniappan Sankar, Ray J Butcher
The synthesis of three new classes of mixed β-pyrrole substituted tetraphenylporphyrins, MTPP(R), MTPP(Br)2(R) (where R = -CH[double bond, length as m-dash]C(CN)2, -CH[double bond, length as m-dash]C(CN)(COOC2H5), -CH[double bond, length as m-dash](CN)(COOH) and M = 2H, Ni(ii), Cu(ii)) and MTPP(NO2)(Ph-p-R')2 (R' = -CHO and -CH[double bond, length as m-dash]C(CN)2 and M = 2H, Ni(ii), Cu(ii)) have been reported. The crystal structures of CuTPP(Br)2-ECA (7a), NiTPP(NO2)(Ph-p-CHO)2 (9) and NiTPP(NO2)(Ph-p-CH[double bond, length as m-dash](CN)2)2 (10) are highly nonplanar among β-trisubstituted porphyrins reported to date as evidenced from the mean displacement of β-pyrrole carbon (ΔCβ) in the range ±(0...
January 26, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28123027/innate-immunity-stimulation-via-toll-like-receptor-9-ameliorates-vascular-amyloid-pathology-in-tg-swdi-mice-with-associated-cognitive-benefits
#13
Henrieta Scholtzova, Eileen Do, Shleshma Dhakal, Yanjie Sun, Shan Liu, Pankaj D Mehta, Thomas Wisniewski
: Alzheimer's disease (AD) is characterized by the presence of parenchymal amyloid-β (Aβ) plaques, cerebral amyloid angiopathy (CAA) and neurofibrillary tangles. Currently there are no effective treatments for AD. Immunotherapeutic approaches under development are hampered by complications related to ineffectual clearance of CAA. Genome-wide association studies have demonstrated the importance of microglia in AD pathogenesis. Microglia are the primary innate immune cells of the brain...
January 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28111219/antioxidative-and-anticancer-properties-of-licochalcone-a-from-licorice
#14
Xiangrong Chen, Zuojia Liu, Rizeng Meng, Ce Shi, Na Guo
ETHNOPHARMACOLOGICAL RELEVANCE: Licochalcone A (LCA) is a characteristic chalcone that is found in licorice, which is a traditional medicinal plant. In traditional medicine, LCA possesses many potential biological activities, including anti-parasitic, anti-inflammatory and antitumor activities. AIM OF THE STUDY: To determine the antioxidant activity of LCA and, on this basis, to investigate the role of its anticancer activity. MATERIALS AND METHODS: To validate the antioxidant activity of LCA, the proteins SOD, CAT and GPx1 were analyzed using western blotting and cellular antioxidant activity (CAA) assays...
January 19, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28098204/strain-specific-fibril-propagation-by-an-a%C3%AE-dodecamer
#15
Dexter N Dean, Pradipta K Das, Pratip Rana, Franklin Burg, Yona Levites, Sarah E Morgan, Preetam Ghosh, Vijayaraghavan Rangachari
Low molecular weight oligomers of amyloid-β (Aβ) have emerged as the primary toxic agents in the etiology of Alzheimer disease (AD). Polymorphism observed within the aggregation end products of fibrils are known to arise due to microstructural differences among the oligomers. Diversity in aggregate morphology correlates with the differences in AD, cementing the idea that conformational strains of oligomers could be significant in phenotypic outcomes. Therefore, it is imperative to determine the ability of strains to faithfully propagate their structure...
January 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28094944/solvent-directed-switch-of-a-left-handed-10-12-helix-into-a-right-handed-12-10-helix-in-mixed-%C3%AE-peptides
#16
Prashanth Thodupunuri, Sirisha Katukuri, Kallaganti V S Ramakrishna, Gangavaram V M Sharma, Ajit C Kunwar, Akella V S Sarma, Hans-Jörg Hofmann
Present study describes the synthesis and conformational analysis of β-peptides from C-linked carbo-β-amino acids [β-Caa(l)] with a d-lyxo furanoside side chain and β-hGly in 1:1 alternation. NMR and CD investigations on peptides with an (S)-β-Caa(l) monomer at the N-terminus revealed a right-handed 10/12-mixed helix. An unprecedented solvent-directed "switch" both in helical pattern and handedness was observed when the sequence begins with a β-hGly residue instead of a (S)-β-Caa(l) constituent. NMR studies on these peptides in chloroform indicated a left-handed 10/12-helix, while the CD spectrum in methanol inferred a right-handed secondary structure...
February 1, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28091730/actin-isoform-expression-patterns-in-adult-extracardiac-and-cardiac-rhabdomyomas-indicate-a-different-cell-of-origin
#17
Christina C Westhoff, Katharina Schoner, Sylvia Hartmann, Andreas M Sesterhenn, Roland Moll
Rhabdomyomas are rare striated muscle-type tumors arising in the heart or in soft tissues. Using a monoclonal antibody specific for the cardiac isoform of α-actin (α-cardiac actin, α-CAA), differential expression patterns in striated muscle tissues were reported previously. The purpose of the present study was to determine whether the α-actin isoform specificity is maintained in rhabdomyomas according to their origin, comparing extracardiac to cardiac rhabdomyomas. We immunohistochemically investigated adult extracardiac (pharyngeal) rhabdomyomas (n = 4) and cardiac rhabdomyomas (n = 7) employing isoform-specific monoclonal antibodies...
January 14, 2017: Virchows Archiv: An International Journal of Pathology
https://www.readbyqxmd.com/read/28090718/an-analysis-of-policies-for-cotrimoxazole-amoxicillin-and-azithromycin-use-in-namibia-s-public-sector-findings-and-therapeutic-implications
#18
Dan Kibuule, Mwangana Mubita, Ester Naikaku, Francis Kalemeera, Brian B Godman, Evans Sagwa
BACKGROUND: Despite Namibia's robust medicine use systems and policies, antibiotic use indicators remain suboptimal. Recent medicine use surveys rank cotrimoxazole, amoxicillin and azithromycin (CAA) among the most used medicines. However, there is rising resistance to CAA (55.9%-96.7%). Unfortunately, to date, there have been limited studies evaluating policies to improve antibiotic use in Namibia. AIM: To evaluate public sector pharmaceutical policies and guidelines influencing the therapeutic use of CAA antibiotics in Namibia...
January 16, 2017: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/28089561/characterizing-deep-white-matter-hyperintensities-in-patients-with-symptomatic-isolated-cortical-superficial-siderosis
#19
Dimitri Renard, Lavinia Tatu, Christophe Demattei, Christophe Hirtz, Sylvain Lehmann, Eric Thouvenot
BACKGROUND: In patient with cerebral amyloid angiopathy (CAA) presenting with lobar hemorrhage (LH), magnetic resonance imaging (MRI) white matter hyperintensities (WMH) tend to be predominant in posterior regions with the "multiple subcortical spots" WMH pattern as the most frequent topographical WMH pattern. Our aim was to analyze WMH severity and topographical distribution in patients with cortical superficial siderosis (CSS). METHODS: We retrospectively analyzed MRIs from consecutive symptomatic isolated (i...
January 12, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28087696/genetic-and-biochemical-characterization-of-a-gene-operon-for-trans-aconitic-acid-a-novel-nematicide-from-bacillus-thuringiensis
#20
Cuiying Du, Shiyun Cao, Xiangyu Shi, Xiangtao Nie, Jinshui Zheng, Yun Deng, Lifang Ruan, Donghai Peng, Ming Sun
Trans-aconitic acid (TAA) is an isomer of cis-aconitic acid (CAA), an intermediate of the tricarboxylic acid (TCA) cycle that is synthesized by aconitase. Although TAA production has been detected in bacteria and plants for many years and is known to be a potent inhibitor of aconitase, its biosynthetic origins and the physiological relevance of its activity have remained unclear. We have serendipitously uncovered key information relevant to both of these questions. Specifically, in a search for novel nematicidal factors from Bacillus thuringiensis, a significant nematode pathogen harboring many protein virulence factors, we discovered a high-yielding component that showed activity against the plant-parasitic nematode Meloidogyne incognita and surprisingly identified it as TAA...
January 13, 2017: Journal of Biological Chemistry
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