keyword
MENU ▼
Read by QxMD icon Read
search

Hawthorn effect

keyword
https://www.readbyqxmd.com/read/29326192/evidence-for-sample-selection-effect-and-hawthorne-effect-in-behavioural-hiv-prevention-trial-among-young-women-in-a-rural-south-african-community
#1
Molly Rosenberg, Audrey Pettifor, Rhian Twine, James P Hughes, F Xavier Gomez-Olive, Ryan G Wagner, Afolabi Sulaimon, Stephen Tollman, Amanda Selin, Catherine MacPhail, Kathleen Kahn
OBJECTIVES: We examined the potential influence of both sample selection effects and Hawthorne effects in the behavioural HIV Prevention Trial Network 068 study, designed to examine whether cash transfers conditional on school attendance reduce HIV acquisition in young South African women. We explored whether school enrolment among study participants differed from the underlying population, and whether differences existed at baseline (sample selection effect) or arose during study participation (Hawthorne effect)...
January 10, 2018: BMJ Open
https://www.readbyqxmd.com/read/29288081/effect-of-poly-ethylene-glycol-on-insulin-stability-and-cutaneous-cell-proliferation-in-vitro-following-cytoplasmic-delivery-of-insulin-loaded-nanoparticulate-carriers-a-potential-topical-wound-management-approach
#2
Dalia H Abdelkader, Mohamed A Osman, Sanaa A El-Gizawy, Suzan J Hawthorne, Ahmed M Faheem, Paul A McCarron
We describe the development of a nanoparticulate system, with variation of poly(ethylene glycol) (PEG) content, capable of releasing therapeutic levels of bioactive insulin for extended periods of time. Recombinant human insulin was encapsulated in poly(d,l-lactide-co-glycolide) nanoparticles, manufactured with variation in poly(ethylene glycol) content, and shown to be stable for 6days using SDS-PAGE, western blot and MALDI MS. To determine if insulin released from this sustained release matrix could stimulate migration of cell types normally active in dermal repair, a model wound was simulated by scratching confluent cultures of human keratinocytes (HaCaT) and fibroblasts (Hs27)...
December 26, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29277104/the-importance-of-the-hawthorne-effect-on-psychological-outcomes-unveiled-in-a-randomized-controlled-trial-of-diabetes-technology
#3
Mary B Abraham, Jennifer A Nicholas, Michael Crone, Trang T Ly, Elizabeth A Davis, Timothy W Jones
No abstract text is available yet for this article.
December 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/29244241/vitamin-d-and-gestational-diabetes-mellitus-a-systematic-review-based-on-data-free-of-hawthorne-effect
#4
Yanbo Zhang, Yunhui Gong, Hongmei Xue, Jingyuan Xiong, Guo Cheng
BACKGROUND: Gestational diabetes mellitus (GDM) is an increasingly prevalent disorder, associated with low blood vitamin D (VD) level. OBJECTIVES: To evaluate the relationship between VD and GDM. SEARCH STRATEGY: EMBASE, MEDLINE, Cochrane library and China Biology Medicine disc were searched till May 2017. The references of previous studies were screened. SELECTION CRITERIA: Observational studies on the relationship between VD and GDM free from Hawthorne effect and randomized controlled trials of VD supplementation during pregnancy for preventing or treating GDM were included...
December 15, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29239959/bias-in-before-after-studies-narrative-overview-for-anesthesiologists
#5
Anthony M H Ho, Rachel Phelan, Glenio B Mizubuti, John A C Murdoch, Sarah Wickett, Adrienne K Ho, Vidur Shyam, Ian Gilron
Before-after study designs are effective research tools and in some cases, have changed practice. These designs, however, are inherently susceptible to bias (ie, systematic errors) that are sometimes subtle but can invalidate their conclusions. This overview provides examples of before-after studies relevant to anesthesiologists to illustrate potential sources of bias, including selection/assignment, history, regression to the mean, test-retest, maturation, observer, retrospective, Hawthorne, instrumentation, attrition, and reporting/publication bias...
December 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29234372/hawthorn-leaf-flavonoids-protect-against-diabetes-induced-cardiomyopathy-in-rats-via-pkc-%C3%AE-signaling-pathway
#6
Qing Min, Yuting Bai, Yuchen Zhang, Wei Yu, Minli Zhang, Dongyang Liu, Tingting Diao, Wei Lv
Objectives: DCM has become one of the main reasons of death in diabetic patients. In this study, we aimed to explore the hawthorn leaf flavonoids (HLF) protective effect against diabetes-induced cardiac injury and the underlying mechanisms in experimental rats. Methods: Experimental diabetic model was induced by intraperitoneal injection of streptozotocin (STZ, 40 mg/kg) in rats after feeding with high-fat diet for 8 weeks. The diabetic rats received a 16-week treatment of different doses of HLF (50, 100, and 200)...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/29219914/the-hawthorne-effect-revisited
#7
Donald E Fry
No abstract text is available yet for this article.
January 2018: Diseases of the Colon and Rectum
https://www.readbyqxmd.com/read/29200740/evaluation-of-hypolipidemic-and-antioxidant-effects-in-phenolrich-fraction-of-crataegus-pinnatifida-fruit-in-hyperlipidemia-rats-and-identification-of-chemical-composition-by-ultra-performance-liquid-chromatography-coupled-with-quadropole-time-of-flight-mass
#8
Feng Shao, Lifei Gu, Huijuan Chen, Ronghua Liu, Huilian Huang, Lanying Chen, Ming Yang
Background: Hawthorn (Crataegus pinnatifida) fruit has enjoyed a great popularity as a pleasant-tasting food associated with hypolipidemic and antioxidant effects. Objective: Our aim was to screen the effective fraction of hawthorn fruit in the treatment of hyperlipidemia rats. Materials and Methods: In this study, ethanol extract of hawthorn fruit (Fr.1) and four fractionated extracts (Fr.2, Fr.3, Fr.4, and Fr.5) were compared to total phenol content evaluated using Folin-Ciocalteu method, and hypolipidemic and antioxidant effects were assessed in hyperlipidemic rats...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29186392/hawthorne-effect-reporting-in-orthodontic-randomized-controlled-trials-truth-or-myth-blessing-or-curse
#9
Salem Abdulraheem, Lars Bondemark
Objective: To investigate in 10 orthodontic journals how many randomized controlled trials (RCTs) considered the Hawthorne effect, and if considered, to determine whether it was related to the patients or the therapists involved in the trial and, finally, to discuss the Hawthorne effect in an educational way. Materials and methods: A search was performed on the Medline database, via PubMed, for publication type 'randomized controlled trial' published for each journal between 1 August 2007 and 31 July 2017...
November 28, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/29151068/crataegus-special-extract-ws-1442-up-to-date-review-of-experimental-and-clinical-experiences
#10
M Zorniak, B Szydlo, T F Krzeminski
Extracts and tinctures made from Crataegus spp. (Hawthorn) have been used as cardioprotective remedies since ancient times. WS 1442 special extract, manufactured by Dr. W. Schwabe Pharmaceuticals©, made from Crataegus spp. Leaves and flowers is one of the most studied and popular of preparations received from Hawthorn. It is integral, and most important active component of such herbal drugs as Crataegutt® novo 450, and CardioMax®. This standardized extract contains 18.75% oligomeric procyanidins (OPC), which have beneficial cardioprotective values and play a role as free-radicals scavengers, that protect the ischemic heart tissue from neutrophile elastase action successions...
August 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/29149790/impressions-of-using-the-cohen-mansfield-agitation-inventory-as-an-outcome-measure-lessons-learnt-for-future-clinical-researchers-innovative-practice
#11
Lindsey Brett, Victoria Traynor, Shahla Meedya, Paul Stapley
The Cohen-Mansfield Agitation Inventory was a tool originally developed for use in research to measure agitation and subsequently used in clinical settings. It was the primary outcome measure for a randomised controlled trial which evaluated the effects and feasibility of a physiotherapist-led physical exercise intervention on agitation and physical performance of individuals living with dementia in nursing homes. The study produced weak results in regards to the Cohen-Mansfield Agitation Inventory due to small sample size and perceived issues with the use of the Cohen-Mansfield Agitation Inventory...
January 1, 2017: Dementia
https://www.readbyqxmd.com/read/29145321/acupuncture-and-constraint-induced-movement-therapy-for-a-patient-with-chronic-stroke-one-year-follow-up-case-report
#12
Yuanyuan Jin, Xiaoqing Jin, Yidan Chen, Jianfang Zhu
RATIONALE: Spasticity is a widespread problem in chronic stroke. To date, no study has reported the long-term (up to 1 year) outcomes of acupuncture in combination with constraint-induced movement therapy in patients with chronic stroke. This report describes the successful addition of acupuncture on spasticity and arm function in a patient with chronic stroke and arm paresis. PATIENT CONCERNS: At screening, the patient was unable to voluntarily extend her interphalangeal or metacarpophalangeal joints beyond the 10 degrees required for constraint-induced movement therapy...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29133340/effects-of-hawthorn-crataegus-pentagyna-leaf-extract-on-electrophysiologic-properties-of-cardiomyocytes-derived-from-human-cardiac-arrhythmia-specific-induced-pluripotent-stem-cells
#13
Sara Pahlavan, Marziyeh Shalchi Tousi, Mahdi Ayyari, Abolfazl Alirezalu, Hassan Ansari, Tomo Saric, Hossein Baharvand
Cardiac arrhythmias are major life-threatening conditions. The landmark discovery of induced pluripotent stem cells has provided a promising in vitro system for modeling hereditary cardiac arrhythmias as well as drug development and toxicity testing. Nowadays, nutraceuticals are frequently used as supplements for cardiovascular therapy. Here we studied the cardiac effects of hawthorn (Crataegus pentagyna) leaf extract using cardiomyocytes (CMs) differentiated from healthy human embryonic stem cells, long QT syndrome type 2 (LQTS2), and catecholaminergic polymorphic ventricular tachycardia type 1 (CPVT1) patient-specific induced pluripotent stem cells...
November 13, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29129385/effect-directed-fingerprints-of-77-botanical-extracts-via-a-generic-high-performance-thin-layer-chromatography-method-combined-with-assays-and-mass-spectrometry
#14
S Krüger, L Hüsken, R Fornasari, I Scainelli, G E Morlock
Quantitative effect-directed profiles of 77 industrially and freshly extracted botanicals like herbs, spices, vegetables and fruits, widely used as food ingredients, dietary supplements or traditional medicine, gave relevant information on their quality. It allows the assessment of food, dietary supplements and phytomedicines with regard to potential health-promoting activities. In contrary to sum parameter assays and targeted analysis, chromatography combined with effect-directed analysis allows fast assignment of single active compounds and evaluation of their contribution to the overall activity, originating from a food or botanical sample...
October 29, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29091901/resistance-training-and-hawthorn-extract-ameliorate-cognitive-deficits-in-streptozotocin-induced-diabetic-rats
#15
Ebrahim Zarrinkalam, Kamal Ranjbar, Iraj Salehi, Nejat Kheiripour, Alireza Komaki
It has been shown that diabetic rats display cognitive impairment. The aim of this study was to investigate the effects of resistance training and natural antioxidants on learning and memory in type 1 diabetic rats. For this purpose, fifty male Wistar rats were randomly divided into five groups: (i) Control (Con, n=10), (ii) Diabetic (D, n=10), (iii) Diabetic+Resistance training (DRT, n=10), (iv) Diabetic+natural antioxidants (DHE, n=10), and (v) Diabetic+Resistance training+ natural antioxidants (DRH, n=10)...
October 28, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29090548/-key-physical-parameters-of-hawthorn-leaf-granules-by-stepwise-regression-analysis-method
#16
Qie-Ying Jiang, Rong-Gui Zeng, Zhe Li, Juan Luo, Guo-Wei Zhao, Dan Lv, Zheng-Gen Liao
The purpose of this study was to investigate the effect of key physical properties of hawthorn leaf granule on its dissolution behavior. Hawthorn leaves extract was utilized as a model drug. The extract was mixed with microcrystalline cellulose or starch with the same ratio by using different methods. Appropriate amount of lubricant and disintegrating agent was added into part of the mixed powder, and then the granules were prepared by using extrusion granulation and high shear granulation. The granules dissolution behavior was evaluated by using equilibrium dissolution quantity and dissolution rate constant of the hypericin as the indicators...
May 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29080984/benefit-risk-assessment-of-crataegus-extract-ws%C3%A2-1442-an-evidence-based-review
#17
REVIEW
Christian J F Holubarsch, Wilson S Colucci, Jaan Eha
Preparations from Crataegus (hawthorn) have a long history in the treatment of heart failure. WS 1442 is a dry extract from hawthorn leaves with flowers (4-6.6:1), extraction solvent of ethanol 45% (w/w), adjusted to 17.3-20.1% of oligomeric procyanidins. Nonclinical studies show that WS 1442 has positive inotropic and antiarrhythmic properties and protects the myocardium from ischemic damage, reperfusion injury, and hypertension-related hypertrophy, improves endothelial functions such as NO synthesis, and delays endothelial senescence...
October 28, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/29028975/comparative-responses-of-rhagoletis-zephyria-and-rhagoletis-pomonella-diptera-tephritidae-to-commercial-and-experimental-sticky-traps-and-odors-in-washington-state
#18
Wee L Yee, Robert B Goughnour, Jeffrey L Feder, Charles E Linn, Dong H Cha
Rhagoletis zephyria Snow and Rhagoletis pomonella (Walsh) (Diptera: Tephritidae) are morphologically similar flies that attack white-colored snowberry fruit (Symphoricarpos spp.) and yellow/red or dark-colored apple/hawthorn fruit (Malus/Crataegus spp.), respectively. The two flies are caught together on traps in R. pomonella surveys in the western United States, increasing labor needed to process catches. Comparing responses of the two species with different traps could help identify best practices for reducing R...
September 23, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28927688/effects-of-dietary-hawthorn-extract-on-growth-performance-immune-responses-growth-and-immune-related-genes-expression-of-juvenile-golden-pompano-trachinotus-ovatus-and-its-susceptibility-to-vibrio-harveyi-infection
#19
Xiaohong Tan, Zhenzhu Sun, Zhong Huang, Chuanpeng Zhou, Heizhao Lin, Lianjie Tan, Pengwei Xun, Qian Huang
The present study was conducted to investigate the effects of dietary hawthorn extract (HTE) supplementation on growth performance, immune responses, hepatic antioxidant abilities, growth- and immune-related and heat shock protein genes expression and resistance to the pathogen Vibrio harveyi in Trachinotus ovatus. A basal diet supplemented with HTE at 0 (Diet 1), 0.50 (Diet 2), 1.00 (Diet 3), 2.00 (Diet 4), 4.00 (Diet 5) and 10.00 (Diet 6) g kg(-1) were fed to golden pompano for 8 weeks. The highest final body weight, weight gain rate, specific growth rate, feed efficiency ratio and protein efficiency rate were observed in fish fed Diet 2 (P < 0...
September 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28854648/development-of-a-low-cost-and-effective-trapping-device-for-apple-maggot-fly-diptera-tephritidae-monitoring-and-control-in-mexican-commercial-hawthorn-groves
#20
E Tadeo, E Muñiz, J Rull, W L Yee, M Aluja, R Lasa
Few efforts have been made in Mexico to monitor Rhagoletis pomonella (Walsh) (Diptera: Tephritidae) in commercial hawthorn (Crataegus spp.) crops. Therefore, the main objectives of this study were to evaluate infestation levels of R. pomonella in feral and commercial Mexican hawthorn and to assess the efficacy of different trap-lure combinations to monitor the pest. Wild hawthorn was more infested than commercially grown hawthorn at the sample site. No differences among four commercial baits (Biolure, ammonium carbonate, CeraTrap, and Captor + borax) were detected when used in combination with a yellow sticky gel (SG) adherent trap under field conditions...
August 1, 2017: Journal of Economic Entomology
keyword
keyword
63053
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"