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https://www.readbyqxmd.com/read/28736671/noninvasive-in-vivo-monitoring-of-collagenase-induced-intracerebral-hemorrhage-by-photoacoustic-tomography
#1
Dan Wu, Jinge Yang, Guang Zhang, Huabei Jiang
Photoacoustic tomography (PAT) is an emerging noninvasive biomedical imaging modality that can be used for visualizing the structure and function of brain in high resolution. Here we report an application of PAT to imaging intracerebral hemorrhage (ICH) in a mouse model. In vivo photoacoustic images were obtained in mice with right basal ganglia hemorrhage induced by microinjection of collagenase. With multi-spectral light excitation, cortical vascular network was clearly revealed at 532 nm, and ICH associated hematoma lesions and perihemmatoma regions were accurately mapped over time at 750 nm and 875 nm, respectively...
April 1, 2017: Biomedical Optics Express
https://www.readbyqxmd.com/read/28733122/the-effect-of-eosinopenia-on-mortality-in-patients-with-intracerebral-hemorrhage
#2
Asli Bolayir, Burhanettin Cigdem, Seyda Figul Gokce, Hasan Ata Bolayir, Ozlem Kayim Yildiz, Ertugrul Bolayir, Suat Ahmet Topaktas
INTRODUCTION: Inflammation may determine the prognosis of intracerebral hemorrhage (ICH), which has high mortality and morbidity rates. Recent studies have increasingly demonstrated eosinopenia as a prognostic factor, particularly in bacteremia, chronic obstructive pulmonary disease, and myocardial and cerebral infarction. Nonetheless, its significance regarding the determination of prognosis in patients with ICH has not yet been clarified. MATERIALS AND METHODS: Our study included 296 patients who presented to our clinic within 24 hours of the onset of symptoms and who were diagnosed with ICH between January 2008 and June 2016, along with 180 age- and sex-matched controls...
July 19, 2017: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/28732306/photostability-testing-using-online-reactor-hplc-hyphenation-and-mass-spectrometric-compound-identification-illustrated-by-ketoprofen-as-model-compound
#3
Jaber Assaf, Diego Zulkiewicz Gomes, Bernhard Wuest, Maria Kristina Parr
Investigations on the photochemical stability of pharmaceutical substances are mandatory in drug development and licensing as photo-induced degradation of an active pharmaceutical ingredient (API) may not only lead to decreased API concentrations but also to toxic or reactive products. Thus, the US Food and Drug Administration (FDA) and the International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) issued Guidance for Industry Q1B "Photostability Testing of New Drug Substances and Products" for testing of pure but also packed drugs...
July 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28731834/the-essential-oil-of-hyptis-mutabilis-in-ichthyophthirius-multifiliis-infection-and-its-effect-on-hematological-biochemical-and-immunological-parameters-in-silver-catfish-rhamdia-quelen
#4
Jessyka Arruda da Cunha, Fernando Jonas Sutili, Anita Motta Oliveira, Leticia Gressler, Cecilia de Ávila Scheeren, Lenise Lima Silva, Rodrigo Vaucher, Bernardo Baldisserotto, Berta Heinzmann
This study evaluated the activity of leaf essential oil (EO) from Hyptis mutabilis as well as its major constituent, (-)-globulol, in infections by the parasite Ichthyophthirius multifiliis (ich). Effects on hematological, biochemical and immunological parameters of silver catfish, Rhamdia quelen, exposed to same samples also were evaluated. In the first experiment, naturally infected fish were treated with EO (0, 10 and 20 mgL-1) and ethanol, using several methods of exposure. Fish mortality and the number of trophonts per fish were assessed after 48 and 96 hr...
July 21, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28730561/men-experience-higher-risk-of-pneumonia-and-death-after-intracerebral-hemorrhage
#5
Sandro Marini, Andrea Morotti, Umme K Lena, Joshua N Goldstein, Steven M Greenberg, Jonathan Rosand, Christopher D Anderson
BACKGROUND: Infectious complications worsen outcome after intracerebral hemorrhage (ICH). We investigated the impact of sex on post-ICH infections and mortality. METHODS: Consecutive ICH patients (admitted to a single hospital between 1994 and 2015) were retrospectively assessed via chart review to ascertain the following in-hospital infections: urinary tract infection (UTI), pneumonia, and sepsis. Adjusted logistic regression was performed to identify associations between sex, infection, and mortality at 90 days...
July 20, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28730267/phantom-based-standardization-of-ct-angiography-images-for-spot-sign-detection
#6
Andrea Morotti, Javier M Romero, Michael J Jessel, Andrew M Hernandez, Anastasia Vashkevich, Kristin Schwab, Joseph D Burns, Qaisar A Shah, Thomas A Bergman, M Fareed K Suri, Mustapha Ezzeddine, Jawad F Kirmani, Sachin Agarwal, Angela Hays Shapshak, Steven R Messe, Chitra Venkatasubramanian, Katherine Palmieri, Christopher Lewandowski, Tiffany R Chang, Ira Chang, David Z Rose, Wade Smith, Chung Y Hsu, Chun-Lin Liu, Li-Ming Lien, Chen-Yu Hsiao, Toru Iwama, Mohammad Rauf Afzal, Christy Cassarly, Steven M Greenberg, Renee' Hebert Martin, Adnan I Qureshi, Jonathan Rosand, John M Boone, Joshua N Goldstein
PURPOSE: The CT angiography (CTA) spot sign is a strong predictor of hematoma expansion in intracerebral hemorrhage (ICH). However, CTA parameters vary widely across centers and may negatively impact spot sign accuracy in predicting ICH expansion. We developed a CT iodine calibration phantom that was scanned at different institutions in a large multicenter ICH clinical trial to determine the effect of image standardization on spot sign detection and performance. METHODS: A custom phantom containing known concentrations of iodine was designed and scanned using the stroke CT protocol at each institution...
July 20, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28729917/autophagy-endoplasmic-reticulum-stress-and-the-unfolded-protein-response-in-intracerebral-hemorrhage
#7
Mingming Niu, Xiaohong Dai, Wei Zou, Xueping Yu, Wei Teng, Qiuxin Chen, Xiaowei Sun, Weiwei Yu, Huihui Ma, Peng Liu
Intracerebral hemorrhage (ICH) is a subtype of stroke that is followed by primary and secondary brain injury. As a result of the injury, cell metabolism is disrupted and a series of stress responses are activated, such as endoplasmic reticulum (ER) stress and the unfolded protein response (UPR), leading to the re-establishment of cell homeostasis or cell death. As an important mechanism of cell homeostasis, autophagy has been widely studied, and the associations between autophagy, ER stress, and the UPR have also been demonstrated...
2017: Translational Neuroscience
https://www.readbyqxmd.com/read/28729134/macrophage-migration-inhibitory-factor-levels-in-serum-from-patients-with-acute-intracerebral-hemorrhage-potential-contribution-to-prognosis
#8
Qun Lin, Jian-Yong Cai, Chuan Lu, Jun Sun, Hua-Jun Ba, Mao-Hua Chen, Xian-Dong Chen, Jun-Xia Dai, Jian-Hu Lin
BACKGROUND: Intracerebral hemorrhage (ICH) pathophysiology involves inflammation. Macrophage migration inhibition factor (MIF), a pro-inflammatory cytokine, is related to prognosis of ischemic stroke. The aim of this study was to investigate whether serum MIF levels are associated with severity and outcomes in patients with acute ICH. METHODS: We enrolled a total of 120 consecutive ICH patients and 120 healthy controls and sampled blood on admission and at study entry respectively...
July 17, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28725968/microglial-mediated-pdgf-cc-activation-increases-cerebrovascular-permeability-during-ischemic-stroke
#9
Enming Joseph Su, Chunzhang Cao, Linda Fredriksson, Ingrid Nilsson, Christina Stefanitsch, Tamara K Stevenson, Juanjuan Zhao, Margret Ragsdale, Yu-Yo Sun, Manuel Yepes, Chia-Yi Kuan, Ulf Eriksson, Dudley K Strickland, Daniel A Lawrence, Li Zhang
Treatment of acute ischemic stroke with the thrombolytic tissue plasminogen activator (tPA) can significantly improve neurological outcomes; however, thrombolytic therapy is associated with an increased risk of intra-cerebral hemorrhage (ICH). Previously, we demonstrated that during stroke tPA acting on the parenchymal side of the neurovascular unit (NVU) can increase blood-brain barrier (BBB) permeability and ICH through activation of latent platelet-derived growth factor-CC (PDGF-CC) and signaling by the PDGF receptor-α (PDGFRα)...
July 19, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28725144/comparative-study-of-antioxidant-activity-and-validated-rp-hptlc-analysis-of-rutin-in-the-leaves-of-different-acacia-species-grown-in-saudi-arabia
#10
Perwez Alam, Mohamed F Alajmi, Ahmed H Arbab, Mohammad K Parvez, Nasir A Siddiqui, Saleh I Alqasoumi, Adnan J Al-Rehaily, Mohammed S Al-Dosari, Omer A Basudan
The present study assessed the comparative antioxidant potential of the ethanol extract (EE) of leaves of four Acacia species (Acacia salicina, AS; Acacia laeta, AL; Acacia hamulosa AH; and Acacia tortilis, AT) grown in Saudi Arabia, including RP-HPTLC quantification of antioxidant biomarker rutin. In vitro DPPH radical scavenging and β-carotene-linoleic acid bleaching assays showed the promising antioxidant activities of Acacia extracts: ASEE (IC50: 60.39 and 324.65 μg/ml) >ALEE (IC50: 217.06 and 423...
July 2017: Saudi Pharmaceutical Journal: SPJ: the Official Publication of the Saudi Pharmaceutical Society
https://www.readbyqxmd.com/read/28724836/prothrombin-complex-concentrate-for-vitamin-k-antagonist-associated-intracranial-hemorrhage%C3%A3-global-evidence-and-the-japanese-perspective
#11
Masahiro Yasaka, Andres Brainsky, Kazunori Toyoda
Patients receiving vitamin K antagonists (VKAs) are at increased risk of bleeding. Intracranial hemorrhage (ICH) is a major cause of morbidity and mortality in this population, and is a particular concern among Japanese clinicians, given reports of an elevated risk of this bleeding type in patients of Asian ethnicity. Patients with VKA-associated ICH require rapid international normalized ratio (INR) reversal, and treatment guidelines suggest the use of prothrombin complex concentrates (PCCs) or plasma for this purpose...
July 19, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28724654/mfsd2a-major-facilitator-superfamily-domain-containing-2a-attenuates-intracerebral-hemorrhage-induced-blood-brain-barrier-disruption-by-inhibiting-vesicular-transcytosis
#12
Yuan-Rui Yang, Xiao-Yi Xiong, Juan Liu, Li-Rong Wu, Qi Zhong, Kai Zhou, Zhao-You Meng, Liang Liu, Fa-Xiang Wang, Qiu-Wen Gong, Mao-Fan Liao, Chun-Mei Duan, Jie Li, Mei-Hua Yang, Qin Zhang, Chang-Xiong Gong, Qing-Wu Yang
BACKGROUND: Blood-brain barrier (BBB) disruption aggravates brain injury induced by intracerebral hemorrhage (ICH); however, the mechanisms of BBB damage caused by ICH remain elusive. Mfsd2a (major facilitator superfamily domain containing 2a) has been known to play an essential role in BBB formation and function. In this study, we investigated the role and underlying mechanisms of Mfsd2a in BBB permeability regulation after ICH. METHODS AND RESULTS: Using ICH models, we found that Mfsd2a protein expression in perihematomal brain tissues was significantly decreased after ICH...
July 19, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28724590/long-term-antithrombotic-treatment-in-intracranial-hemorrhage-survivors-with-atrial-fibrillation
#13
Eleni Korompoki, Filippos T Filippidis, Peter B Nielsen, Angela Del Giudice, Gregory Y H Lip, Joji B Kuramatsu, Hagen B Huttner, Jiming Fang, Sam Schulman, Joan Martí-Fàbregas, Celine S Gathier, Anand Viswanathan, Alessandro Biffi, Daniela Poli, Christian Weimar, Uwe Malzahn, Peter Heuschmann, Roland Veltkamp
OBJECTIVE: To perform a systematic review and meta-analysis of studies reporting recurrent intracranial hemorrhage (ICH) and ischemic stroke (IS) in ICH survivors with atrial fibrillation (AF) during long-term follow-up. METHODS: A comprehensive literature search including MEDLINE, EMBASE, Cochrane library, clinical trials registry was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement. We considered studies capturing outcome events (ICH recurrence and IS) for ≥3 months and treatment exposure to vitamin K antagonists (VKAs), antiplatelet agents (APAs), or no antithrombotic medication (no-ATM)...
July 19, 2017: Neurology
https://www.readbyqxmd.com/read/28724587/florbetapir-imaging-in-cerebral-amyloid-angiopathy-related-hemorrhages
#14
Nicolas Raposo, Mélanie Planton, Patrice Péran, Pierre Payoux, Fabrice Bonneville, Aicha Lyoubi, Jean François Albucher, Blandine Acket, Anne Sophie Salabert, Jean Marc Olivot, Anne Hitzel, François Chollet, Jérémie Pariente
OBJECTIVE: To assess whether (18)F-florbetapir, a PET amyloid tracer, could bind vascular amyloid in cerebral amyloid angiopathy (CAA) by comparing cortical florbetapir retention during the acute phase between patients with CAA-related lobar intracerebral hemorrhage (ICH) and patients with hypertension-related deep ICH. METHODS: Patients with acute CAA-related lobar ICH were prospectively enrolled and compared with patients with deep ICH. (18)F-florbetapir PET, brain MRI, and APOE genotype were obtained for all participants...
July 19, 2017: Neurology
https://www.readbyqxmd.com/read/28720659/microbleeds-cerebral-hemorrhage-and-functional-outcome-after-stroke-thrombolysis-individual-patient-data-meta-analysis
#15
Andreas Charidimou, Guillaume Turc, Catherine Oppenheim, Shenqiang Yan, Jan F Scheitz, Hebun Erdur, Pascal P Klinger-Gratz, Marwan El-Koussy, Wakoh Takahashi, Yusuke Moriya, Duncan Wilson, Chelsea S Kidwell, Jeffrey L Saver, Asma Sallem, Solene Moulin, Myriam Edjlali-Goujon, Vincent Thijs, Zoe Fox, Ashkan Shoamanesh, Gregory W Albers, Heinrich P Mattle, Oscar R Benavente, H Rolf Jäger, Gareth Ambler, Junya Aoki, Jean-Claude Baron, Kazumi Kimura, Wataru Kakuda, Shunya Takizawa, Simon Jung, Christian H Nolte, Min Lou, Charlotte Cordonnier, David J Werring
BACKGROUND AND PURPOSE: We assessed whether the presence, number, and distribution of cerebral microbleeds (CMBs) on pre-intravenous thrombolysis MRI scans of acute ischemic stroke patients are associated with an increased risk of intracerebral hemorrhage (ICH) or poor functional outcome. METHODS: We performed an individual patient data meta-analysis, including prospective and retrospective studies of acute ischemic stroke treated with intravenous tissue-type plasminogen activator...
July 18, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28719814/enantiomeric-separation-of-seven-%C3%AE-agonists-by-nace-study-of-chiral-selectivity-with-diacetone-d-mannitol-boric-acid-complex
#16
Lili Lv, Lijuan Wang, Jun Li, Yajun Jiao, Shengnan Gao, Jiachang Wang, Hongyuan Yan
A rapid and effective nonaqueous capillary electrophoresis (NACE)-ultraviolet (UV) method was developed for the enantiomeric separation of seven β-agonists. Diacetone-d-mannitol-boric acid complex was used as a new chiral selector. It was in situ synthesized by the reaction of diacetone-d-mannitol and boric acid in methanol medium containing triethylamine. The effects of diacetone-d-mannitol, boric acid, and triethylamine concentrations on the enantioseparation were carefully investigated. Under the optimized conditions, baseline enantioseparation could be obtained for six of the tested β-agonists within 12min...
July 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28719813/comparative-stability-indicating-chromatographic-methods-for-determination-of-4-hexylresorcinol-in-pharmaceutical-formulation-and-shrimps
#17
Rafeek F Shokry, Lories I Bebawy, Mohamed R Elghobashy, Samah S Abbas
Three chromatographic stability-indicating methods were developed for determination of 4-hexylresorcinol in pure form and in a pharmaceutical formulation. Method A was based on a gradient elution liquid chromatographic HPLC determination of 4-hexylresorcinol, its related impurities and in presence of its degradation products. UPLC-MS/MS (Method B) was described for determination of the cited drug in presence of its degradation products. Method C was a thin- layer chromatography (TLC)-densitometry method for the separation and determination of the active ingredient, one of its related impurities and in presence of its degradation products...
July 8, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28718048/joint-effects-of-gwas-snps-in-coagulation-system-confer-risk-to-hypertensive-intracerebral-hemorrhage
#18
Yanyan Cao, Min Tian, Qin Fang, Zheng Wen, Wei Wang, Hu Ding, Dao Wen Wang
Recent genome-wide association studies (GWAS) have identified numerous single nucleotide polymorphisms (SNPs) associated with coagulation system, including hemostatic factors and hematological phenotypes. However, few articles described the relationships between these SNPs and the risk of hemorrhagic stroke. The aim of our study was to evaluate the roles of these SNPs as risk factors and survival predictors for hemorrhagic stroke. Thirteen SNPs from GWAS in coagulation system were genotyped in a Chinese Han population including 1000 patients with hemorrhagic stroke (intracerebral hemorrhage, ICH = 743; subarachnoid hemorrhage, SAH = 257) and 1044 population-based controls...
July 17, 2017: Neuromolecular Medicine
https://www.readbyqxmd.com/read/28717091/thrombolysis-related-multiple-lobar-hemorrhaging-in-cerebral-amyloid-angiopathy-with-extensive-strictly-lobar-cerebral-microbleeding
#19
Makoto Eriguchi, Yusuke Yakushiji, Jun Tanaka, Masashi Nishihara, Hideo Hara
A hemi-paralyzed 86-year-old man was diagnosed with ischemic stroke and underwent thrombolysis. Pre-thrombolysis brain magnetic resonance imaging revealed extensive strictly lobar cerebral microbleeding (CMB). Post-thrombolytic computed tomography revealed asymptomatic multiple intracerebral hemorrhaging (ICH). His age, CMB topography, and decreased cerebral spinal fluid amyloid-β 40 and 42 levels were compatible with a diagnosis of cerebral amyloid angiopathy (CAA). There is no consensus on the safety of thrombolysis for acute stroke patients with CAA...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28716276/adult-posthaemorrhagic-hydrocephalus-animal-models
#20
REVIEW
Cong Hua, Gang Zhao
Posthaemorrhagic hydrocephalus (PHH) is often associated with high morbidity and mortality and serves as an important clinical predictor of poor outcomes after intracranial haemorrhage (ICH). We are lack of effective medical intervention methods to improve functional outcomes in patients with PHH because little is still known about the mechanisms of PHH pathogenesis. Animal models play a key role in the study of PHH. Developed a suitable animal model that will help us to be better to find preventative strategies and improve the prognosis of patients with PHH...
August 15, 2017: Journal of the Neurological Sciences
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