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https://www.readbyqxmd.com/read/29154863/development-of-a-selective-hplc-dad-elsd-method-for-the-qualitative-and-quantitative-assessment-of-commercially-available-eurycoma-longifolia-products-and-plant-extracts
#1
Benjamin Mutschlechner, Stefan Schwaiger, Van Anh Thi Tran, Hermann Stuppner
Aqueous extracts of the roots of Eurycoma longifolia are traditionally used to improve sexual performance, to treat infertility and other sexual dysfunctions but also to increase muscle strength. Nowadays, many different products are commercially available which are promoted as E. longifolia extracts and claim to possess beneficial aphrodisiac effects. Since such herbal aphrodisiac preparations have been recently the target of fraudulent product counterfeiting and because eurycomanone, one of the main quassinoids of E...
November 14, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29154751/the-etiology-of-spontaneous-intracerebralhemorrhage-insights-from-a-neuropathological-series
#2
Luis Ruano, Mariana Branco, Raquel Samões, Ricardo Taipa, Manuel Melo Pires
The etiology of intracerebral hemorrhage (ICH) is frequently undetermined. We aimed to assess the impact of the neuropathological study on the etiologic diagnosis of ICH. Patients with ICH admitted to a tertiary hospital in the last 14 years were identified, and histological samples of surgically-drained ICH were retrieved. Blinded from neuropathological results, a clinical etiology was hypothesized. Pathological samples were reviewed, and immunohistochemistry study for β-amyloid was performed in all the cases where structural abnormalities were not identified...
November 20, 2017: Clinical Neuropathology
https://www.readbyqxmd.com/read/29154196/analysis-of-potential-genotoxic-impurities-in-rabeprazole-active-pharmaceutical-ingredient-via-liquid-chromatography-tandem-mass-spectrometry-following-quality-by-design-principles-for-method-development
#3
Katerina Iliou, Anđelija Malenović, Yannis L Loukas, Yannis Dotsikas
A novel Liquid Chromatography-tandem mass spectrometry (LC-MS/MS) method is presented for the quantitative determination of two potential genotoxic impurities (PGIs) in rabeprazole active pharmaceutical ingredient (API). In order to overcome the analytical challenges in the trace analysis of PGIs, a development procedure supported by Quality-by-Design (QbD) principles was evaluated. The efficient separation between rabeprazole and the two PGIs in the shortest analysis time was set as the defined analytical target profile (ATP) and to this purpose utilization of a switching valve allowed the flow to be sent to waste when rabeprazole was eluted...
November 12, 2017: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/29153608/cofilin-signaling-in-hemin-induced-microglial-activation-and-inflammation
#4
Muhammad Shahdaat Bin Sayeed, Qasim Alhadidi, Zahoor A Shah
Intracerebral hemorrhage (ICH) is the most severe form of stroke and is further exacerbated by the secondary injury involving inflammatory response due to the activation of microglia. This secondary injury is partly due to the toxic effects of hemin, an endogenous breakdown product of hemoglobin. Cofilin, an actin depolymerizing factor, controls actin dynamics and has been previously shown to be involved in mediating neuronal cell death in ischemic conditions and during bacterial lipopolysaccharide induced microglial activation...
December 15, 2017: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29153510/resumption-of-antiplatelet-therapy-in-patients-with-primary-intracranial-hemorrhage-benefits-and-risks-a-meta-analysis-of-cohort-studies
#5
REVIEW
Xueying Ding, Xi Liu, Changhong Tan, Maojia Yin, Teng Wang, Ying Liu, Lijuan Mo, Xin Wei, Xinjie Tan, Fen Deng, Lifen Chen
BACKGROUND: Clinical disagreement over antiplatelet (AP) resumption in patients with primary intracranial hemorrhage (ICH) has long existed. This meta-analysis aimed to evaluate the benefits of AP resumption on preventing ischemic or thromboembolic events against its risks of promoting ICH recurrence or hematoma expansion. METHODS: All relevant articles published in Pubmed, EMBASE, the Cochrane Library, and Science Direct from January 1950 to March 2017 were sourced, and the combined relative risk (RR) was calculated...
November 10, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/29152469/eyebrow-incision-for-surgical-evacuation-of-a-lobar-intracerebral-hematoma-with-a-novel-endoport-system
#6
Dale Ding, Colin J Przybylowski, Robert M Starke, R Webster Crowley, Kenneth C Liu
Large lobar intracerebral hemorrhages (ICHs) can cause rapid neurological deterioration, and affected patients have low rates of survival and functional independence. Currently, the role of surgical intervention in the management patients with lobar ICHs is controversial. Minimally invasive technologies have been developed which may potentially decrease the operative morbidity of ICH surgery. The aim of this case report is to describe the technical aspects of the use of a novel minimally invasive endoport system, the BrainPath (NICO, Indianapolis, IN, USA), through an eyebrow incision for evacuation of a large lobar hematoma...
June 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/29151416/-short-term-deep-sedation-strategy-in-patients-with-spontaneous-intracerebral-hemorrhage-a-randomized-controlled-trial
#7
Zhuheng Wang, Chunzhi Shi, Liping Sun, Qinghua Guo, Wei Qiao, Guanhua Zhou
OBJECTIVE: To evaluate the efficacy and safety of short-term deep sedation strategy in patients with spontaneous intracerebral hemorrhage (ICH) after surgery. METHODS: A perspective, randomized, parallel-group study was conducted. Adult patients with spontaneous ICH and undergoing craniotomy admitted to Daxing Teaching Hospital of Capital Medical University from December 2015 to November 2016 were enrolled. The patients who received surgery were randomly divided into a short-term deep sedation and a slight and middle sedation group...
November 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29146975/disturbance-in-plasma-metabolic-profile-in-different-types-of-human-cytomegalovirus-induced-liver-injury-in-infants
#8
Wei-Wei Li, Jin-Jun Shan, Li-Li Lin, Tong Xie, Li-Li He, Yan Yang, Shou-Chuan Wang
Human cytomegalovirus (HCMV) infection in infants is a global problem and the liver is a target organ of HCMV invasion. However, the mechanism by which HCMV causes different types of liver injury is unclear, and there are many difficulties in the differential diagnosis of HCMV infantile cholestatic hepatopathy (ICH) and extrahepatic biliary atresia (EHBA). We established a non-targeted gas chromatography-mass spectrometry metabolomics method in conjunction with orthogonal partial least squares-discriminate analysis based on 127 plasma samples from healthy controls, and patients with HCMV infantile hepatitis, HCMV ICH, and HCMV EHBA to explore the metabolite profile of different types of HCMV-induced liver injury...
November 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146829/is-bridging-therapy-still-required-in-stroke-due-to-carotid-artery-terminus-occlusions
#9
Romain Bourcier, Pierre-Louis Alexandre, François Eugène, Béatrice Delasalle-Guyomarch, Benoit Guillon, Basile Kerleroux, Suzana Saleme, Gaultier Marnat, Samy Boucebci, Mahmood Mirza, Jean-Christophe Ferré, Chrysanthi Papagiannaki, Hubert Desal
INTRODUCTION: Studies comparing endovascular stroke treatment using mechanical thrombectomy (MT) with or without prior IV tissue plasminogen activator (tPa) have included only 30% of internal carotid artery terminus occlusions (ICA-O), a known predictor of recanalization failure with IV tPa. OBJECTIVE: To carry out a retrospective multicenter analysis of prospectively collected data of consecutive patients to investigate the impact of intravenous thrombolysis on ICA-O by comparing patients treated with MT alone or bridging therapy (BT)...
November 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29145946/predicting-subclinical-atherosclerosis-in-low-risk%C3%A2-individuals-ideal-cardiovascular-health-score-and-fuster-bewat-score
#10
Juan Miguel Fernández-Alvira, Valentín Fuster, Stuart Pocock, Javier Sanz, Leticia Fernández-Friera, Martín Laclaustra, Rodrigo Fernández-Jiménez, José Mendiguren, Antonio Fernández-Ortiz, Borja Ibáñez, Héctor Bueno
BACKGROUND: The ideal cardiovascular health score (ICHS) is recommended for use in primary prevention. Simpler tools not requiring laboratory tests, such as the Fuster-BEWAT (blood pressure [B], exercise [E], weight [W], alimentation [A], and tobacco [T]) score (FBS), are also available. OBJECTIVES: The purpose of this study was to compare the effectiveness of ICHS and FBS in predicting the presence and extent of subclinical atherosclerosis. METHODS: A total of 3,983 participants 40 to 54 years of age were enrolled in the PESA (Progression of Early Subclinical Atherosclerosis) cohort...
November 14, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29145482/combination-of-ultrasound-and-rtpa-enhances-fibrinolysis-in-an-in-vitro-clot-system
#11
Julia Masomi-Bornwasser, Philipp Winter, Hendrik Müller-Werkmeister, Susanne Strand, Jochem König, Oliver Kempski, Florian Ringel, Sven R Kantelhardt, Naureen Keric
BACKGROUND: Catheter-based lysis with recombinant tissue plasminogen activator (rtPA) is a well-established therapy for spontaneous intracerebral hemorrhage (ICH). The effectiveness of this therapy can be increased with ultrasound, but the optimal conditions are not yet clearly established. Using a novel in vitro system of blood clots previously developed by our group, we investigated various parameters of intralesional sonothrombolysis using an endosonography catheter in combination with rtPA...
2017: PloS One
https://www.readbyqxmd.com/read/29142436/high-performance-thin-layer-chromatographic-densitometric-quantification-and-recovery-of-bioactive-compounds-for-identification-of-elite-chemotypes-of-gloriosa-superba-l-collected-from-sikkim-himalayas-india
#12
Ankita Misra, Pushpendra Kumar Shukla, Bhanu Kumar, Jai Chand, Poonam Kushwaha, Md Khalid, Ajay Kumar Singh Rawat, Sharad Srivastava
Background: Gloriosa superba L. (Colchicaceae) is used as adjuvant therapy in gout for its potential antimitotic activity due to high colchicine(s) alkaloids. Objective: This study aimed to develop an easy, cheap, precise, and accurate high-performance thin-layer chromatographic (HPTLC) validated method for simultaneous quantification of bioactive alkaloids (colchicine and gloriosine) in G. superba L. and to identify its elite chemotype(s) from Sikkim Himalayas (India)...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142420/exploring-the-cytotoxic-potential-of-triterpenoids-enriched-fraction-of-bacopa-monnieri-by-implementing-in-vitro-in-vivo-and-in-silico-approaches
#13
Md Nasar Mallick, Washim Khan, Rabea Parveen, Sayeed Ahmad, Sadaf, Mohammad Zeeshan Najm, Istaq Ahmad, Syed Akhtar Husain
Background: Bacopa monnieri (BM) is a herbaceous plant traditionally used from time immemorial in Ayurvedic and folklore medicines. We hypothesized that the extract of the whole plant might contain numerous molecules with having antitumor activities that could be very effective in killing of human cancer cells. Objectives: This work investigated anticancer activity of bioactive fraction of BM. Materials and Methods: The hydroalcoholic extract of BM was fractionated with different solvent, namely, hexane, dichloromethane (DCM), acetone, methanol, and water...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29142392/quantitative-analysis-of-benzyl-isothiocyanate-in-salvadora-persica-extract-and-dental-care-herbal-formulations-using-reversed-phase-c18-high-performance-liquid-chromatography-method
#14
Maged Saad Abdel-Kader, Y T Kamal, Prawez Alam, Mohammed Hamed Alqarni, Ahmed Ibrahim Foudah
Context: Benzyl isothiocyanate is the active antimicrobial agent in Salvadora persica (siwak) widely used in Islamic countries for oral hygiene. Aims: Quantification of benzyl isothiocyanate in the ethanol extract of S. persica and some dental care herbal formulations labeled to contain siwak. Settings and Design: Simple and sensitive high-performance liquid chromatography method was designed. Subjects and Methods: Separation was achieved on reverse phase C18 (250 mm × 4...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29139015/defining-the-optimal-midline-shift-threshold-to-predict-poor-outcome-in-patients-with-supratentorial-spontaneous-intracerebral-hemorrhage
#15
Wen-Song Yang, Qi Li, Rui Li, Qing-Jun Liu, Xing-Chen Wang, Li-Bo Zhao, Peng Xie
BACKGROUND: Midline shift (MLS) has been associated with unfavorable outcome in patients with intracerebral hemorrhage (ICH). However, the optimal criteria to define the MLS measurements that indicate future outcome in ICH patients are absent, and the quantitative threshold of MLS that differentiates favorable and poor clinical outcome should be further explored. METHODS: We enrolled patients with ICH who underwent admission computed tomography (CT) within 6 h after onset of symptoms...
November 14, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/29138419/ivig-activates-fc%C3%AE-riib-ship1-pip3-pathway-to-stabilize-mast-cells-and-suppress-inflammation-after-ich-in-mice
#16
Gokce Yilmaz Akyol, Anatol Manaenko, Onat Akyol, Ihsan Solaroglu, Wing Mann Ho, Yan Ding, Jerry Flores, John H Zhang, Jiping Tang
Following intracerebral hemorrhage (ICH), the activation of mast cell contributes to brain inflammation and brain injury. The mast cell activation is negatively regulated by an inhibitory IgG-receptor. It's signals are mediated by SHIP (Src homology 2-containing inositol 5' phosphatase), in particular SHIP1, which activation leads to hydrolyzation of PIP3 (Phosphatidylinositol (3,4,5)-trisphosphate (PtdIns(3,4,5)P3, leading to the inhibition of calcium mobilization and to the attenuation of mast cell activation...
November 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29136562/warfarin-resumption-following-anticoagulant-associated-intracranial-hemorrhage-a-systematic-review-and-meta-analysis
#17
Chatree Chai-Adisaksopha, Alfonso Iorio, Christopher Hillis, Deborah Siegal, Daniel M Witt, Sam Schulman, Mark Crowther
BACKGROUND: This study aims to assess the effect of warfarin resumption in patients who experienced warfarin-associated intracranial hemorrhage (ICH). METHODS: We conducted a systematic review and meta-analysis of studies evaluating the outcomes of adult patients who survived warfarin-associated ICH. We included studies that compared patients who resumed warfarin versus those who did not. RESULTS: Of 3145 studies screened, ten observational studies were included in the final analysis...
November 11, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/29136204/thrombolysis-is-an-independent-risk-factor-for-poor-outcome-after-carotid-revascularization
#18
Ananth K Vellimana, Chad W Washington, Chester K Yarbrough, Thomas K Pilgram, Brian L Hoh, Colin P Derdeyn, Gregory J Zipfel
BACKGROUND: Thrombolysis is the standard of care for acute ischemic stroke patients presenting in the appropriate time window. Studies suggest that the risk of recurrent ischemia is lower if carotid revascularization is performed early after the index event. The safety of early carotid revascularization in this patient population is unclear. OBJECTIVE: To evaluate the safety of carotid revascularization in patients who received thrombolysis for acute ischemic stroke...
November 10, 2017: Neurosurgery
https://www.readbyqxmd.com/read/29134712/characterization-of-forced-degradation-products-of-canagliflozine-by-lc-qtof-ms-ms-and-in-silico-toxicity-predictions
#19
Shandilya Mahamuni Baira, Pradipbhai D Kalariya, Rakesh Nimbalkar, Prabha Garg, R Srinivas, M V N Kumar Talluri
RATIONALE: Forced degradation studies are useful for better understanding of the stability of active pharmaceutical ingredients and drugs and to generate information about drug degradation pathways and formation of degradation products (DPs). Identification of DPs plays a vital role in establishing the safety and therapeutic benefit of the drug. METHODS: Canagliflozin (CAN) was subjected to different stress conditions as per ICH guidelines (Q1A R2). All the DPs and the drug were well separated on Aquity CSH C18 (100 × 2...
November 14, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/29131506/development-of-a-capillary-electrophoresis-method-for-the-determination-of-the-chiral-purity-of-dextromethorphan-by-a-dual-selector-system-using-quality-by-design-methodology
#20
Sulaiman Krait, Matthias Heuermann, Gerhard K E Scriba
Dextromethorphan is a centrally acting antitussive drug, while its enantiomer levomethorphan is an illicit drug with opioid analgesic effects. As capillary electrophoresis has been proven as an ideal technique for enantiomer analysis, the present study was conducted in order to develop a capillary-electrophoresis-based limit test for levomethorphan. The analytical target profile was defined that the method should be able to determine levomethorphan with acceptable precision and accuracy at the 0.1 % level. From initial scouting experiments, a dual selector system consisting of sulfated β-cyclodextrin and methyl-α-cyclodextrin was identified...
November 13, 2017: Journal of Separation Science
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