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https://www.readbyqxmd.com/read/29227209/simultaneous-determination-of-organochlorine-and-pyrethriod-pesticide-residues-in-the-chinese-patent-medicines-by-gas-chromatography-tandem-mass-spectrometry
#1
Xue J Mao, Yao Zhong, Ai P Yan, Bin Wang, Yuan X Wang, Yi Q Wan
A simple, sensitive, reliable method was developed for the simultaneous determination of organochlorine and pyrethriod pesticide residues in Chinese patent medicines Six ingredient rehmannia pills and Xiaoyao pills. These pesticides were extracted by ethyl acetate. The extraction time and volume of ethyl acetate were optimized. Cleanup of extracts was performed with dispersive-solid phase extraction using graphitized carbon black as the sorbent. The determination of pesticides in the final extracts was carried out by gas chromatography-tandem mass spectrometry in multiple reaction monitoring mode (GC-MS/MS, MRM)...
December 11, 2017: Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
https://www.readbyqxmd.com/read/29224267/-clinical-outcomes-of-cervical-disc-herniation-treated-by-posterior-percutaneous-endoscopic-cervical-discectomy
#2
B L Chen, Y J Li, Y P Lin, Y X Du, S Zhao, G Y Su
Objective: To evaluate the clinical outcomes of posterior percutaneous endoscopic cervical discectomy (PPECD) for cervical disc herniation. Methods: A total of 23 patients who underwent PPECD for cervical disc herniation at Department of Spine Surgery, Guangdong Provincial Hospital of Chinese Medicine from August 2014 to April 2016 were reviewed. The mean age of the 17 males and 6 females was 49.5 years (range from 31 to 61 years). All patients had unilateral upper limb radiating symptoms, 13 patients with right upper limb radiating pain and 10 patients with left upper limb radiation pain, 17 patients with neck pain symptoms...
December 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29223704/decellularized-heart-ecm-hydrogel-using-supercritical-carbon-dioxide-for-improved-angiogenesis
#3
Yoojin Seo, Youngmee Jung, Soo Hyun Kim
Initial angiogenesis within the first 3 days is critical for healing ischemic diseases such as myocardial infarction. Recently, decellularized extracellular matrix (dECM) has been reported to provide tissue-derived ECM components and can be used as a scaffold for cell delivery for angiogenesis in tissue engineering. Decellularization by various detergents such as sodium dodecyl sulfate (SDS) and triton X-100 can remove the cell nuclei in tissue organs. However, this leads to ECM structure denaturation, decreased presence of various ECM proteins and cytokines, and loss of mechanical properties...
December 6, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29219272/-application-of-ima-and-h-fabp-in-forensic-diagnosis-of-sudden-cardiac-death
#4
REVIEW
Z L Zhu, P Wang, J B You, Q Yue, P F Wang, X L Wang, C N Zhang, G H Zhang
Acute myocardial ischemia is the most common cause of sudden cardiac death. The diagnosis of early myocardial ischemia is a hot point in forensic medicine, which is also an early and important part for a prevention against myocardial infarction. This paper conducts a comprehensive discussion of the structure, function, clinical value and forensic medicine application prospect of ischemia modified albumin (IMA) and heart-type fatty acid binding protein (H-FABP), aiming to determine whether the two proteins can be used as biochemical detection indicators of early myocardial ischemia for the diagnosis of sudden cardiac death in forensic medicine...
August 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29219263/-comparison-of-measurement-methods-of-exophthalmos-and-its-forensic-significance
#5
S L Tan, J M Chen, X Y Yu, M W Wang, P P Zhuo, S Zhou, W T Xia
OBJECTIVES: To compare the differences between Hertel exophthalmometry and CT on exophthalmos measurement, and explore its practical application value in forensic medicine. METHODS: Fifty-six normal individuals without eye injuries or diseases were selected as the control group. The absolute values of exophthalmos were measured in the standardized CT image workstation. The difference of binocular exophthalmos was compared in normal group. Forty-seven cases with unilateral orbital fracture were divided into injured eye group and normal eye group according to the presence of binocular orbital fractures...
August 2017: Fa Yi Xue za Zhi
https://www.readbyqxmd.com/read/29215199/neurotrophically-induced-mesenchymal-progenitor-cells-derived-from-induced-pluripotent-stem-cells-enhance-neuritogenesis-via-neurotrophin-and-cytokine-production
#6
Rachel M Brick, Aaron X Sun, Rocky S Tuan
Adult tissue-derived mesenchymal stem cells (MSCs) are known to produce a number of bioactive factors, including neurotrophic growth factors, capable of supporting and improving nerve regeneration. However, with a finite culture expansion capacity, MSCs are inherently limited in their lifespan and use. We examined here the potential utility of an alternative, mesenchymal-like cell source, derived from induced pluripotent stem cells, termed induced mesenchymal progenitor cells (MiMPCs). We found that several genes were upregulated and proteins were produced in MiMPCs that matched those previously reported for MSCs...
December 7, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/29214247/isomeric-control-of-the-mechanical-properties-of-supramolecular-filament-hydrogels
#7
Yi-An Lin, Myungshim Kang, Wei-Chiang Chen, Yu-Chuan Ou, Andrew G Cheetham, Pei-Hsun Wu, Denis Wirtz, Sharon M Loverde, Honggang Cui
Supramolecular filament hydrogels are an emerging class of biomaterials that hold great promise for regenerative medicine, tissue engineering, and drug delivery. However, fine-tuning of their bulk mechanical properties at the molecular level without altering their network structures remains a significant challenge. Here we report an isomeric strategy to construct amphiphilic peptides through the conjugation of isomeric hydrocarbons to influence the local viscoelastic properties of their resulting supramolecular hydrogels...
December 7, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/29209068/-carboranyl-cysteine-synthesis-structure-and-self-assembly-behavior-of-a-novel-%C3%AE-amino-acid
#8
Tianyu He, Jennifer C Misuraca, Rabi A Musah
Substitution of the thiol proton in cysteine with m-carborane furnished 2-amino-3-(1,7-dicarba-closo-dodecacarboranyl-1-thio)propanoic acid (3), a boron cluster amino acid that exhibits self-assembly to form micron-sized constructs. Field emission scanning electron microscopy revealed that ethanol solutions of 3 form floret-shaped constructs, while fibrillar architectures are formed in water. Furthermore, slow evaporation of methanol solutions of 3 produced crystals whose structure was revealed by X-ray crystallography...
December 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29208614/association-between-hospitalisation-for-ambulatory-care-sensitive-conditions-and-primary-health-care-physician-specialisation-a-cross-sectional-ecological-study-in-curitiba-brazil
#9
Marcelo P D Afonso, Helena E Shimizu, Edgar Merchan-Hamann, Walter M Ramalho, Tarcisio Afonso
INTRODUCTION: Hospitalisation for ambulatory care-sensitive conditions (HACSCs) is frequently used as an indicator of the quality and effectiveness of primary healthcare (PHC) services around the world. The aim of the present study was to evaluate whether the PHC model (family health strategy (FHS) x conventional) and the availability of specialised PHC physicians is associated or not with total hospitalisation or HACSCs in the National Health System (SUS) of the municipality of Curitiba, Paraná state (PR), Brazil...
December 4, 2017: BMJ Open
https://www.readbyqxmd.com/read/29208030/experimental-therapeutic-assays-of-tephrosia-vogelii-against-leishmania-major-infection-in-murine-model-in-vitro-and-in-vivo
#10
Sylvia Naliaka Marango, Christopher Khayeka-Wandabwa, Judith Alice Makwali, Bernard Ngoitsi Jumba, Joseph K Choge, Eric Onyango Adino, Christopher O Anjili
BACKGROUND: Conventional targeted leishmanicidal chemotherapy has persistently remained prohibitive for most economically deprived communities due to costs, associated time to accessing health services and duration for successful treatment programme. Alternatives are bound to be incorporated in rational management of leishmaniasis by choice or default due to accessibility and cultural beliefs. Therefore, there is need to rigorously investigate and appraise the activity of medicinal compounds that may have anti-leishmanicidal activity especially in the context of products that are already being utilized by the populations for other ailments but have limited information on their therapeutic value and possible cytoxicity...
December 6, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/29206288/absorbed-dose-kernel-and-self-shielding-calculations-for-a-novel-radiopaque-glass-microsphere-for-transarterial-radioembolization
#11
Cody Church, George Mawko, John Paul Archambault, Robert Lewandowski, David Liu, Sharon Kehoe, Daniel Boyd, Robert Abraham, Alasdair Syme
PURPOSE: Radiopaque microspheres may provide intraprocedural and postprocedural feedback during transarterial radioembolization (TARE). Furthermore, the potential to use higher-resolution x-ray imaging techniques as opposed to nuclear medicine imaging suggests that significant improvements in the accuracy and precision of radiation dosimetry calculations could be realized for this type of therapy. This study investigates the absorbed dose kernel for novel radiopaque microspheres including contributions of both short and long-lived contaminant radionuclides while concurrently quantifying the self-shielding of the glass network...
December 5, 2017: Medical Physics
https://www.readbyqxmd.com/read/29202543/-experts-consensus-on-the-management-of-the-right-heart-function-in-critically-ill-patients
#12
X T Wang, D W Liu, H M Zhang, Y Long, X D Guan, H B Qiu, K J Yu, J Yan, H Zhao, Y Q Tang, X Ding, X C Ma, W Du, Y Kang, B Tang, Y H Ai, H W He, D C Chen, H Chen, W Z Chai, X Zhou, N Cui, H Wang, X Rui, Z J Hu, J G Li, Y Xu, Y Yang, B Ouyan, H Y Lin, Y M Li, X Y Wan, R L Yang, Y Z Qin, Y G Chao, Z Y Xie, R H Sun, Z Y He, D F Wang, Q Q Huang, D P Jiang, X Y Cao, R G Yu, X Wang, X K Chen, J F Wu, L N Zhang, M G Yin, L X Liu, S W Li, Z J Chen, Z Luo
To establish the experts consensus on the right heart function management in critically ill patients. The panel of consensus was composed of 30 experts in critical care medicine who are all members of Critical Hemodynamic Therapy Collaboration Group (CHTC Group). Each statement was assessed based on the GRADE (Grading of Recommendations Assessment, Development, and Evaluation) principle. Then the Delphi method was adopted by 52 experts to reassess all the statements. (1) Right heart function is prone to be affected in critically illness, which will result in a auto-exaggerated vicious cycle...
December 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/29201633/a-peculiar-case-of-asymptomatic-spontaneous-pneumomediastinum
#13
Trent Irwin, Mohit Rishi, Bishwas Upadhyay
Objective: To present a case of asymptomatic spontaneous pneumomediastinum and review available evidence-based workup and management. Case presentation: A young Caucasian adult male with a history of inhalational drug use was admitted to the internal medicine service for evaluation of dehydration and mild rhabdomyolysis. Patient had been on the run from the police and had spent the last days prior to presentation without food, water, or shelter. On admission, patient had no complaints, except for thirst...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29201232/renoprotective-effects-of-emodin-against-diabetic-nephropathy-in-rat-models-are-mediated-via-pi3k-akt-gsk-3%C3%AE-and-bax-caspase-3-signaling-pathways
#14
Danqing Jing, Hua Bai, Shinan Yin
Emodin is the main active component of the Chinese medicine rhubarb, which has a variety of pharmacological effects and a high clinical value. Its anti-inflammatory and antitumor effects have been widely studied. The aim of the present study was to determine whether emodin has renoprotective effects, and to identify the potential underlying mechanisms in a rat model of diabetic nephropathy (DN). The changes in mean blood glucose levels, normalized kidney weight, urinary albumin excretion, serum creatinine levels and tubulointerstitial injury index (TII) scores of the rats with DN were significantly attenuated by emodin...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29201099/synthesis-and-biological-evaluation-of-thiosemicarbazide-derivatives-endowed-with-high-activity-toward-mycobacterium-bovis
#15
Soroush Sardari, Samaneh Feizi, Ali Hossein Rezayan, Parisa Azerang, Seyyed Mohammad Shahcheragh, Ghazaleh Ghavami, Azizollah Habibi
Thiosemicarbazides are potent intermediates for the synthesis of pharmaceutical and bioactive materials and thus, they are used extensively in the field of medicinal chemistry. The imine bond (-N=CH-) in this compounds are useful in organic synthesis, in particular for the preparation of heterocycles and non-natural β-aminoacids. In this paper the synthesis of some new thiosemicarbazide derivatives by condensation reaction of various aldehydes or ketones with 4-phenylthiosemicarbazide or thiosemicarbazide is reported...
2017: Iranian Journal of Pharmaceutical Research: IJPR
https://www.readbyqxmd.com/read/29198447/fabrication-and-evaluation-of-magnetic-phosphodiesterase-5-linked-nanoparticles-as-adsorbent-for-magnetic-dispersive-solid-phase-extraction-of-inhibitors-from-chinese-herbal-medicine-prior-to-ultra-high-performance-liquid-chromatography-quadrupole-time-of-flight
#16
Yi Tao, Xianghui Gu, Weidong Li, Baochang Cai
In the present study, the preparation of the magnetic phosphodiesterase-5 linked Fe3O4@ SiO2 nanoparticles was successfully achieved by amide reaction and the magnetic phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were evaluated as a new adsorbent for magnetic dispersive solid-phase extraction of ligands from medicinal plant samples before the analysis by UHPLC-Q-TOF/MS. The prepared phosphodiesterase-5 linked Fe3O4@SiO2 nanoparticles were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, vibration sample magnetometer and potential laser particle size analyzer...
November 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29191266/assessment-of-uv-spectrophotometry-for-determination-of-plasmid-dna-concentration-in-vector-preparations-for-human-gene-therapy-products
#17
X Chenivesse, B Anliker, A Daas, S Ferro, R Meier, M Renner, A Costanzo
The European Pharmacopoeia (Ph. Eur.) general chapter 5.14. Gene transfer medicinal products for human use suggests the use of absorbance measurements at 260 nm to determine the DNA concentration of plasmid vectors used for the preparation of gene therapy products for human use. An international collaborative study was organised by the European Directorate for the Quality of Medicines & HealthCare (EDQM) to confirm the suitability of UV spectrophotometry for the quantification of plasmid vectors used in gene therapy (GT)...
2017: Pharmeuropa Bio & Scientific Notes
https://www.readbyqxmd.com/read/29190998/radiological-and-nuclear-medicine-imaging-of-sarcoidosis
#18
Anna R Larici, Andor W Glaudemans, Annemilia Del Ciello, Riemer H Slart, Lucio Calandriello, Olivier Gheysens
Sarcoidosis is a multisystem chronic inflammatory disease of unknown etiology characterized by widespread growth of non-caseating granulomas. The diagnosis of sarcoidosis is based on clinical and imaging presentation, histologic confirmation and the absence of alternative diseases. Radiology and Nuclear Medicine play an essential role in the diagnostic work-up of patients with sarcoidosis to assess disease extent and activity. In addition, imaging modalities have shown their potential in managing these patients in terms of treatment response and prognostic assessment...
November 30, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29189528/incidence-and-diagnostic-evaluation-of-postoperative-fever-in-pediatric-patients-with-neuromuscular-disorders
#19
Mohamed A A Yousef, Darius Dranginis, Scott Rosenfeld
BACKGROUND: Children with neuromuscular disorders have a significant chance of developing scoliosis and/or hip dislocation during childhood and adolescence and often undergo surgical reconstruction. Because of their high rate of medical comorbidities, these patients are at higher risk of postoperative complications and are therefore often comanaged, along with orthopaedics, by pediatric medicine and critical care teams. Fever during the postoperative stay is a frequent occurrence and often prompts extensive diagnostic workup which increases the cost and burden on the health system but have unclear effects on the care of the patient...
November 16, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29188558/breakthrough-in-gpcr-crystallography-and-its-impact-on-computer-aided-drug-design
#20
Antonella Ciancetta, Kenneth A Jacobson
Recent crystallographic structures of G protein-coupled receptors (GPCRs) have greatly advanced our understanding of the recognition of their diverse agonist and antagonist ligands. We illustrate here how this applies to A2A adenosine receptors (ARs) and to P2Y1 and P2Y12 receptors (P2YRs) for ADP. These X-ray structures have impacted the medicinal chemistry aimed at discovering new ligands for these two receptor families, including receptors that have not yet been crystallized but are closely related to the known structures...
2018: Methods in Molecular Biology
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