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https://www.readbyqxmd.com/read/28822874/spray-drying-ternary-amorphous-solid-dispersions-of-ibuprofen-an-investigation-into-critical-formulation-and-processing-parameters
#1
Ahmad Ziaee, Ahmad B Albadarin, Luis Padrela, Alexandra Faucher, Emmet O'Reilly, Gavin Walker
A design of experiment (DoE) approach was used to investigate the critical formulation and processing parameters in spray drying ternary amorphous solid dispersions (ASDs) of ibuprofen. A range of 16 formulations of ibuprofen, HPMCP-HP55 and Kollidon VA 64 were spray dried. Statistical analysis revealed the interrelation of various spray drying process conditions and formulation factors, namely solution feed rate, inlet temperature, Active Pharmaceutical Ingredient (API)/excipients ratio and dichloromethane (DCM) /methanol (MeOH) ratio...
August 16, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/28822653/titin-truncating-variants-increase-the-risk-of-cardiovascular-death-in-patients-with-hypertrophic-cardiomyopathy
#2
Ce Zhang, Hongju Zhang, Guixin Wu, Xiaoliang Luo, Channa Zhang, Yubao Zou, Hu Wang, Rutai Hui, Jizheng Wang, Lei Song
BACKGROUND: Titin-truncating variants (TTNtv) have been detected in a variety of cardiomyopathies and represent the most common cause of dilated cardiomyopathy. However, their significance in hypertrophic cardiomyopathy (HCM) is still unclear. METHODS: The titin gene (TTN) was sequenced for truncating variants in a cohort of 529 Chinese patients with HCM and 307 healthy controls. Baseline and follow-up clinical data (for 4.7 ± 3.2 years) from these patients were obtained...
June 8, 2017: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28822573/linear-solvation-energy-relationships-in-normal-phase-chromatography-based-on-gradient-separations
#3
Di Wu, Charles A Lucy
Coupling the modified Soczewiñski model and one gradient run, a gradient method was developed to build a linear solvation energy relationship (LSER) for normal phase chromatography. The gradient method was tested on dinitroanilinopropyl (DNAP) and silica columns with hexane/dichloromethane (DCM) mobile phases. LSER models built based on the gradient separation agree with those derived from a series of isocratic separations. Both models have similar LSER coefficients and comparable goodness of fit, but the LSER model based on gradient separation required fewer trial and error experiments...
August 1, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28821963/myocardial-regenerative-therapy-using-a-scaffold-free-skeletal-muscle-derived-cell-sheet-in-patients-with-dilated-cardiomyopathy-even-under-a-left-ventricular-assist-device-a-safety-and-feasibility-study
#4
Yasushi Yoshikawa, Shigeru Miyagawa, Koichi Toda, Atsuhiro Saito, Yasushi Sakata, Yoshiki Sawa
BACKGROUND AND PURPOSE: Despite promising experimental results, clinically, intramyocardial myoblast injection failed to reverse remodeling and it induced arrhythmogenicity. In contrast, scaffold-free skeletal muscle-derived cell (SC) sheets attenuated cardiac dysfunction and arrhythmogenicity via paracrine effects. We report the first clinical trial of SC sheet implantation (SCSI) conducted in four patients with dilated cardiomyopathy (DCM) supported by a left ventricular assist device (LVAD)...
August 18, 2017: Surgery Today
https://www.readbyqxmd.com/read/28820584/conjugated-backbone-effect-of-organic-small-molecules-for-n-type-thermoelectric-materials-with-zt-over-0-2
#5
Dazhen Huang, Huiying Yao, Yutao Cui, Ye Zou, Fengjiao Zhang, Chao Wang, Hongguang Shen, Wenlong Jin, Jia Zhu, Ying Diao, Wei Xu, Chong-An Di, Daoben Zhu
Conjugated backbones play a fundamental role in determining the electronic properties of organic semiconductors. Based on two solution-processable dropyrrolo[3,4-c]pyrrole-1,4-diylidene)bis(thieno[3,2-b]thiophene derivatives with aromatic and quinoid structures, we have carried out a systematic study of the relationship between the conjugated-backbone structure and the thermoelectric properties. In particular, a combination of UV-vis-NIR spectra, photoemission spectroscopy and doping optimization are utilized to probe the interplay between energy levels, chemical doping, and thermoelectric performance...
August 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28819918/network-analysis-of-se-and-zn-related-proteins-in-the-serum-proteomics-expression-profile-of-the-endemic-dilated-cardiomyopathy-keshan-disease
#6
Sen Wang, Yanyan Lv, Yingting Wang, Peiru Du, Wuhong Tan, Mikko J Lammi, Xiong Guo
Keshan disease (KD) is an endemic cardiomyopathy with high mortality. Selenium (Se) and zinc (Zn) deficiencies are closely related to KD. The molecular mechanism of KD pathogenesis is still unclear. There are only few studies on the interaction of trace elements and proteins associated with the pathogenesis of KD. In this study, isobaric tags for relative and absolute quantitation (iTRAQ)-coupled two-dimensional liquid chromatography tandem mass spectrometry (2DLC-MS/MS) technique analysis was used to analyze the differential expression of proteins from serum samples...
August 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28819571/incidental-finding-of-an-undiagnosed-coarctation-of-the-aorta-causing-dilated-cardiomyopathy-in-an-adult
#7
Abdalla Ibrahim, Zahir Satti, Ronan Curtin
31-year-old male with no past medical history apart from high blood pressure noted by GP one week prior to admission presented with a three-week history of a flu-like illness and symptoms of heart failure with severe global left ventricular dilation and dysfunction on Transthoracic Echocardiography (TTE). Two weeks following admission he complained of left arm pain and CT upper limb confirmed embolic occlusion of the left brachial artery and incidental severe coarctation of the proximal descending aorta after the origin of the left subclavian artery...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28816949/whole-exome-sequencing-identifies-a-kcnj12-mutation-as-a-cause-of-familial-dilated-cardiomyopathy
#8
Hai-Xin Yuan, Kai Yan, Dong-Yan Hou, Zhi-Yong Zhang, Hua Wang, Xin Wang, Juan Zhang, Xiao-Rong Xu, Yan-Hong Liang, Wen-Shu Zhao, Lin Xu, Lin Zhang
Dilated cardiomyopathy (DCM) is characterized by left ventricular dilation, and is associated with systolic dysfunction and increased action potential duration. Approximately 50% of DCM cases are caused by inherited gene mutations with genetic and phenotypic heterogeneity. Next generation sequencing may be useful in screening unknown mutations in such cases.A family was identified with DCM, in which the affected family members developed heart failure, arrhythmia, and sudden death. Probands and 4 affected family members underwent whole exome sequencing (WES), bioinformatics methods, and gene annotation to identify potentially causative variants...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28816580/cardioprotective-effects-of-a-phlorotannin-extract-against-doxorubicin-induced-cardiotoxicity-in-a-rat-model
#9
Hyo-Suk Ahn, Dong-Hyeon Lee, Tae-Jung Kim, Hyeon-Cheol Shin, Hui-Kyung Jeon
Long-term therapy with doxorubicin (DOX) is associated with high incidence of cumulative and irreversible dilated cardiomyopathy. The goal of this study was to evaluate the cardioprotective effects and safety of a phlorotannin extract from a brown algae Ecklonia cava (Seapolynol™, SPN) against DOX-induced cardiotoxicity in a rat model. A total of 42 rats were divided into six groups: control, low-dose SPN (LDS), high-dose SPN (HDS), DOX, DOX with low-dose SPN (DOX+LDS), and DOX with high-dose SPN (DOX+HDS)...
August 17, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28816422/dolichol-kinase-deficiency-dolk-cdg-two-new-cases-and-expansion-of-phenotype
#10
Eric T Rush, Craig V Baker, William B Rizzo
Congenital disorders of glycosylation (CDGs) are a group of genetic diseases caused by mutations in genes that are necessary for the addition of oligosaccharides to acceptor proteins or lipids. An early step in this process requires dolichol kinase (DK) to catalyze the formation of dolichyl phosphate, which acts as a membrane anchor for initial attachment of sugar residues that are subsequently built up to oligosaccharides and transferred to acceptor proteins and lipids for further processing. Biallelic mutations in DOLK, the gene for DK, result in human in a CDG with variable symptoms, ranging from nonsyndromic dilated cardiomypopathy to severe multiorgan involvement...
September 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28815202/genetic-mutations-and-multifactorial-inheritance-dilated-cardiomyopathy
#11
Eric S Suarez, Barbara E C Knollmann-Ritschel
The following fictional case is intended as a learning tool within the Pathology Competencies for Medical Education (PCME), a set of national standards for teaching pathology. These are divided into three basic competencies: Disease Mechanisms and Processes, Organ System Pathology, and Diagnostic Medicine and Therapeutic Pathology. For additional information, and a full list of learning objectives for all three competencies, see http://journals.sagepub.com/doi/10.1177/2374289517715040.
January 2017: Acad Pathol
https://www.readbyqxmd.com/read/28808788/shocks-after-implantable-cardioverter-defibrillator-implantation-in-idiopathic-cardiomyopathy-patients-a-myocardial-biopsy-study
#12
Erdal Safak, Giuseppe D Ancona, Heinz-Peter Schultheiss, Uwe Kühl, Stephan Kische, Hilmi Kaplan, Hüseyin Ince, Jasmin Ortak
Prediction of follow-up shock is crucial to stratify patients with dilated cardiomyopathy (DCM) requiring implantable cardioverter defibrillator (ICD). The objective of the article is to assess the predictive value of endo-myocardial biopsy (EMB) towards ICD shock and follow-up mortality. A series of patients with DCM scheduled for ICD implantation underwent EMB to further determine the genesis of DCM. Presence of fibrosis and inflammation was documented and related to outcomes. A total of 240 patients were referred for ICD as primary (56%) and secondary (44%) prophylaxis...
August 14, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28808385/anti-inflammatory-effect-of-etlingera-pavieana-pierre-ex-gagnep-r-m-sm-rhizomal-extract-and-its-phenolic-compounds-in-lipopolysaccharide-stimulated-macrophages
#13
Ekaruth Srisook, Mullika Palachot, Sakulrat Mankhong, Klaokwan Srisook
BACKGROUND: In our continuing search for anti-inflammatory agents from Thai herbs, Etlingera pavieana (Pierre ex Gagnep.) R.M.Sm. showed potent inhibition on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced macrophages. However, the mechanism behind its inhibitory effect has not been yet explored, and little is known regarding its bioactive compounds responsible for the anti-inflammatory effect. OBJECTIVE: In the present study, anti-inflammatory effect of hexane, ethyl acetate, and water fractions of rhizomal ethanol extracts of E...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28805231/the-histone-methyltransferase-mixed-lineage-leukemia-mll-3-may-play-a-potential-role-on-clinical-dilated-cardiomyopathy
#14
Ding-Sheng Jiang, Xin Yi, Rui Li, Yun-Shu Su, Jing Wang, Min-Lai Chen, Li-Gang Liu, Min Hu, Cai Cheng, Ping Zheng, Xue-Hai Zhu, Xiang Wei
Histone modifications play a critical role in the pathological processes of dilated cardiomyopathy (DCM). While the role and expression pattern of histone methyltransferases (HMTs), especially mixed lineage leukemia (MLL) families on DCM are unclear. To this end, twelve normal and fifteen DCM heart samples were included in the present study. A murine cardiac remodelling model was induced by transverse aortic constriction (TAC). Real-time PCR was performed to detect the expression levels of MLL families in the mouse and human left ventricles...
August 9, 2017: Molecular Medicine
https://www.readbyqxmd.com/read/28805198/severe-reversible-hypocalcemic-cardiomyopathy-diagnosed-36-years-after-subtotal-thyroidectomy-a-case-report
#15
Waldemar Elikowski, Małgorzata Małek-Elikowska, Patrycja Lachowska-Kotowska
Chronic hypocalcemia, irrespectively of its etiology, can lead to severe impairment of the left ventricular (LV) contractility manifesting as dilated cardiomyopathy, usually defined as hypocalcemic cardiomyopathy (hypocaCM). This rarely diagnosed type of heart failure (HF), can be completely reversible, when treated properly with calcium and vitamin D supplementation or, in some subjects, with human recombinant parathormone. A CASE REPORT: The authors present a case of a 60-year-old male admitted with advanced pulmonary congestion, recurrent pulmonary edema and pleural effusion...
July 21, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28805056/polymer-dehalogenation-enabled-fast-fabrication-of-n-s-codoped-carbon-materials-for-superior-supercapacitor-and-deionization-applications
#16
Yingna Chang, Guoxin Zhang, Biao Han, Haoyuan Li, Cejun Hu, Yingchun Pang, Zheng Chang, Xiaoming Sun
Doped carbon materials (DCM) with multiple heteroatoms hold broad interests in electrochemical catalysis and energy storage but require several steps to fabricate, which greatly hinder their practical applications. In this study, a facile strategy is developed to enable the fast fabrication of multiply doped carbon materials via room-temperature dehalogenation of polyvinyl dichloride (PVDC) promoted by KOH with the presence of different organic dopants. A N, S-codoped carbon material (NS-DCM) is demonstratively synthesized using two dopants (dimethylformamide for N doping and dimethylsulfoxide for S doping)...
August 14, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28803350/comparison-of-mitral-competence-after-mitral-repair-with-papillary-muscle-approximation-versus-papillary-muscle-relocation-for-functional-mitral-regurgitation
#17
Koji Furukawa, Mitsuhiro Yano, Eisaku Nakamura, Masakazu Matsuyama, Masanori Nishimura, Katsuya Kawagoe, Kunihide Nakamura
The purpose of this study was to evaluate the surgical results of papillary muscle approximation (PMA) and papillary muscle relocation (PMR) for functional mitral regurgitation (FMR) and to compare the effects of both procedures on the change in mitral regurgitation (MR) and echocardiogram parameters associated with tethering. Eighteen patients with moderate-to-severe FMR (MR grade ≥2) who underwent PMA or PMR were retrospectively analyzed. Underlying diseases were ischemic cardiomyopathy, idiopathic dilated cardiomyopathy, and aortic valve disease for seven, six, and five patients, respectively...
August 12, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28802483/left-ventricular-systolic-myocardial-deformation-a%C3%A2-comparison-of-two-and-three-dimensional-echocardiography-in-children
#18
Sowmya Balasubramanian, Rajesh Punn, Shea N Smith, Helene Houle, Theresa A Tacy
BACKGROUND: The clinical applicability and reliability of three-dimensional (3D) speckle-tracking echocardiography has not been well studied in pediatric patients. The aim of this study was to compare two-dimensional (2D) echocardiography and 3DE real-time full-volume-derived strain and rotation indices in healthy children and patients with dilated cardiomyopathy (DCM). METHODS: Children with either normal function or DCM were prospectively recruited in an outpatient setting, and deformation indices, including circumferential, radial, and longitudinal strain and torsion, were measured by 2D and 3D echocardiography...
August 9, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28801204/improved-post-processing-strategy-for-molli-based-tissue-characterization-allows-application-in-patients-with-dyspnoe-and-impaired-left-ventricular-function
#19
Thomas Kampf, Wolfgang Rudolf Bauer, Theresa Reiter
Contrast and non-contrast MRI based characterization of myocardium by T1-mapping will be of paramount importance to obtain biomarkers, e.g. fibrosis, which determines the risk of heart failure patients. T1-mapping by the standard post-processing of the modified look-locker inversion recovery (MOLLI) lacks of accuracy when trying to reduce its duration, which on the other hand, is highly desirable in patients with heart failure. The recently suggested inversion group fitting (IGF) technique, which considers more parameters for fitting, has a superior accuracy for long T1 times despite a shorter duration...
August 8, 2017: Zeitschrift Für Medizinische Physik
https://www.readbyqxmd.com/read/28800845/assessment-of-stability-of-cd34-cell-products-enriched-by-immunoselection-from-peripheral-blood-mononuclear-cells-during-refrigerated-storage
#20
Metka Krasna, Elvira Malicev, Jasmina Ziva Rozman, Bojan Vrtovec
Durable engraftment of transplanted CD34+ cells largely depends on the quality of the cell product. Limited data are currently available about extended storage of immunoselected CD34+ cells. The aim of our study was to assess the stability of CD34+ cell product with the cells stored in high concentration (80×10(6) in 6mL) in small bags intended for cell implantation. Cell products were prepared by leukapheresis and immunoselection (Clinimacs(plus) procedure) from 13 patients with chronic dilated cardiomyopathy...
July 22, 2017: Transfusion and Apheresis Science
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