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https://www.readbyqxmd.com/read/29040510/genomic-fragmentation-and-extrachromosomal-telomeric-repeats-impact-assessment-of-telomere-length-in-human-spermatozoa-quantitative-experiments-and-systematic-review
#1
P Kurjanowicz, S Moskovtsev, C Librach
STUDY QUESTION: Can differences in DNA isolation alter assessment of sperm telomere length (spTL) and do they account for conflicting results in the literature on spTL and male fertility? SUMMARY ANSWER: DNA isolation methods preferentially include or exclude short, extrachromosomal (EC) telomere-specific sequences that alter spTL measurements, and are responsible for a proportion of the disparity observed between investigations. WHAT IS KNOWN ALREADY: The relationship between spTL and male fertility has become an active area of research...
September 29, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29036901/importance-of-leadership-style-towards-quality-of-care-measures-in-healthcare-settings-a-systematic-review
#2
REVIEW
Danae F Sfantou, Aggelos Laliotis, Athina E Patelarou, Dimitra Sifaki-Pistolla, Michail Matalliotakis, Evridiki Patelarou
Effective leadership of healthcare professionals is critical for strengthening quality and integration of care. This study aimed to assess whether there exist an association between different leadership styles and healthcare quality measures. The search was performed in the Medline (National Library of Medicine, PubMed interface) and EMBASE databases for the time period 2004-2015. The research question that guided this review was posed as: "Is there any relationship between leadership style in healthcare settings and quality of care?" Eighteen articles were found relevant to our research question...
October 14, 2017: Healthcare (Basel, Switzerland)
https://www.readbyqxmd.com/read/29035744/a-systematic-review-of-instrumental-variable-analyses-using-geographic-region-as-an-instrument
#3
Emily A Vertosick, Melissa Assel, Andrew J Vickers
BACKGROUND: Instrumental variables analysis is a methodology to mitigate the effects of measured and unmeasured confounding in observational studies of treatment effects. Geographic area is increasingly used as an instrument. METHODS: We conducted a literature review to determine the properties of geographic area in studies of cancer treatments. We identified cancer studies performed in the United States which incorporated instrumental variable analysis with area-wide treatment rate within a geographic region as the instrument...
October 13, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/29035404/-biological-significance-of-chromium-iii-for-the-human-organism
#4
REVIEW
Anna Piotrowska, Wanda Pilch, Łukasz Tota, Gabriel Nowak
Currently, chromium is probably the most controversial transition metal. In recent publications it is clearly stated that it is not an essential micronutrient and should be considered to have a pharmacological effect. Conflicting scientific reports along with a huge amount of dietary supplements, as well as dietary and sports nutrients available on the market have prompted the authors to investigate the available information on the range of possible application, efficacy and safety of products containing salts or chelates of chromium III...
October 12, 2017: Medycyna Pracy
https://www.readbyqxmd.com/read/29035308/gut-microbiota-and-nonalcoholic-fatty-liver-disease-insights-on-mechanisms-and-therapy
#5
REVIEW
Junli Ma, Qihang Zhou, Houkai Li
The gut microbiota plays critical roles in development of obese-related metabolic diseases such as nonalcoholic fatty liver disease (NAFLD), type 2 diabetes(T2D), and insulin resistance(IR), highlighting the potential of gut microbiota-targeted therapies in these diseases. There are various ways that gut microbiota can be manipulated, including through use of probiotics, prebiotics, synbiotics, antibiotics, and some active components from herbal medicines. In this review, we review the main roles of gut microbiota in mediating the development of NAFLD, and the advances in gut microbiota-targeted therapies for NAFLD in both the experimental and clinical studies, as well as the conclusions on the prospect of gut microbiota-targeted therapies in the future...
October 16, 2017: Nutrients
https://www.readbyqxmd.com/read/29034472/protective-effects-of-curcumin-against-aflatoxicosis-a-comprehensive-review
#6
REVIEW
Mohammad Mohajeri, Behzad Behnam, Arrigo F G Cicero, Amirhossein Sahebkar
Aflatoxicosis is a deleterious medical condition that results from aflatoxins (AFs) or ochratoxins (OTs). Contamination with these toxins exerts detrimental effects on the liver, kidneys, reproductive organs, and also on immunological and cardiovascular systems. Aflatoxicosis is closely associated with overproduction of reactive oxygen species (ROS) as key contributors to oxidative and nitrosative stress responses, and subsequent damages to lipids, proteins, RNA, and DNA. The main target organ for AF toxicity is the liver, where DNA adducts, degranulation of endoplasmic reticulum, increased hepatic lipid peroxide, GSH depletion, mitochondrial dysfunction, and reduction of enzymatic and non-enzymatic antioxidants are manifestations of aflatoxicosis...
October 16, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29032761/investigation-on-the-effects-of-antimicrobial-imidazo-2-1-b-thiazole-derivatives-on-the-genitourinary-microflora
#7
Rita Morigi, Beatrice Vitali, Cecilia Prata, Rogers A A Palomino, Alessandra Graziadio, Alessandra Locatelli, Mirella Rambaldi, Alberto Leoni
BACKGROUND: Fused five-membered heterocyclic rings containing bridgehead nitrogen atom are particularly versatile in the field of medicinal chemistry because of their different biological activities. Among them, the imidazo[2,1-b]thiazole is an attractive fused heterocyclic core that has been extensively studied. OBJECTIVE: The aim of the current study was to study the therapeutic applications of imidazo[2,1-b]thiazole derivatives as antimicrobial agents for the treatment of genitourinary infections...
October 10, 2017: Medicinal Chemistry
https://www.readbyqxmd.com/read/29032331/unraveling-the-mechanistic-effects-of-electric-field-stimulation-towards-directing-stem-cell-fate-and-function-a-tissue-engineering-perspective
#8
REVIEW
Greeshma Thrivikraman, Sunil Kumar Boda, Bikramjit Basu
Electric field (EF) stimulation can play a vital role in eliciting appropriate stem cell response. Such an approach is recently being established to guide stem cell differentiation through osteogenesis/neurogenesis/cardiomyogenesis. Despite significant recent efforts, the biophysical mechanisms by which stem cells sense, interpret and transform electrical cues into biochemical and biological signals still remain unclear. The present review critically analyses the variety of EF stimulation approaches that can be employed to evoke appropriate stem cell response and also makes an attempt to summarize the underlying concepts of this notion, placing special emphasis on stem cell based tissue engineering and regenerative medicine...
October 3, 2017: Biomaterials
https://www.readbyqxmd.com/read/29031777/new-applications-of-crispr-cas9-system-on-mutant-dna-detection
#9
Chenqiang Jia, Cong Huai, Jiaqi Ding, Lingna Hu, Bo Su, Hongyan Chen, Daru Lu
The detection of mutant DNA is critical for precision medicine, but low-frequency DNA mutation is very hard to be determined. CRISPR/Cas9 is a robust tool for in vivo gene editing, and shows the potential for precise in vitro DNA cleavage. Here we developed a DNA mutation detection system based on CRISPR/Cas9 that can detect gene mutation efficiently even in a low-frequency condition. The system of CRISPR/Cas9 cleavage in vitro showed a high accuracy similar to traditional T7 endonuclease I (T7E1) assay in estimating mutant DNA proportion in the condition of normal frequency...
October 11, 2017: Gene
https://www.readbyqxmd.com/read/29031495/evidence-of-mechanism-in-the-evaluation-of-streptomycin-and-thalidomide
#10
Donald Gillies
This paper considers what evidence is needed to establish the effectiveness and safety of a drug therapy. The claim that A cures D is a particular case of a causal claim in medicine. So the paper begins with a general analysis of the evidence for causal claims in medicine. Such evidence is divided into two types: statistical evidence and evidence of mechanism. These are further divided into observational and interventional, producing a 2x2 classification. It is shown that historically there have different assessments of the importance of these different types of evidence...
October 11, 2017: Studies in History and Philosophy of Biological and Biomedical Sciences
https://www.readbyqxmd.com/read/29031132/effectiveness-of-policy-changes-to-reduce-harm-from-unrecorded-alcohol-in-russia-between-2005-and-now
#11
Maria Neufeld, Jürgen Rehm
BACKGROUND: Consumption of unrecorded alcohol (alcohol that is not taxed and reflected in official statistics, but consumed as a beverage) has been identified as one of the main contributors to alcohol-attributable premature mortality in Russia. The problem was highlighted by a recent a mass poisoning with surrogate alcohol occurred in the Siberian city of Irkutsk. METHODS: Based on key publications and legislative documents, a narrative review was undertaken about alcohol-related harm reduction policies in Russia for the period between 2005 and 2017, as well as the impact of these policies on the recorded and unrecorded alcohol consumption and alcohol market...
October 11, 2017: International Journal on Drug Policy
https://www.readbyqxmd.com/read/29031018/strategies-to-define-performance-specifications-in-laboratory-medicine-3-years-on-from-the-milan-strategic-conference
#12
Mauro Panteghini, Ferruccio Ceriotti, Graham Jones, Wytze Oosterhuis, Mario Plebani, Sverre Sandberg
Measurements in clinical laboratories produce results needed in the diagnosis and monitoring of patients. These results are always characterized by some uncertainty. What quality is needed and what measurement errors can be tolerated without jeopardizing patient safety should therefore be defined and specified for each analyte having clinical use. When these specifications are defined, the total examination process will be "fit for purpose" and the laboratory professionals should then set up rules to control the measuring systems to ensure they perform within specifications...
October 14, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29030249/sex-as-a-biological-variable-drug-use-and-abuse
#13
Anthony L Riley, Briana J Hempel, Matthew M Clasen
The study of sex as a biological variable is a necessary emphasis across a wide array of endpoints, including basic neuroscience, medicine, mental health, physiology and behavior. The present review summarizes work from clinical and preclinical populations on sex differences in drug use and abuse, ranging from initiation to escalation/dysregulation and from drug cessation/abstinence to relapse. These differences are analyzed in the context of the addiction cycle conceptualization of Koob and his colleagues and address patterns of drug use (binge/intoxication), motivation underlying its use (withdrawal/negative affect) and likelihood and causes of craving and relapse of drug taking (anticipation/preoccupation)...
October 10, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/29030043/quality-of-anthelminthic-medicines-available-in-jimma-ethiopia
#14
Sileshi Belew, Sultan Suleman, Evelien Wynendaele, Matthias D'Hondt, Anne Kosgei, Luc Duchateau, Bart De Spiegeleer
Soil-transmitted helminthiasis and schistosomiasis are major public health problems in Ethiopia. Mass deworming of at-risk population using a single dose administration of 400mg albendazole (ABZ) or 500mg mebendazole (MBZ) for treatment of common intestinal worms and 40mg of praziquantel (PZQ) per kg body weight for treatment of schistosomiasis is one of the strategies recommended by World Health Organization (WHO) in order to control the morbidity of soil-transmitted helminthiasis and schistosomiasis. Since storage condition, climate, way of transportation and distribution route could all affect the quality of medicines, regular assessment by surveys is very critical to ensure the therapeutic outcome, to minimize risk of toxicity to the patient and resistance of parasites...
October 13, 2017: Acta Tropica
https://www.readbyqxmd.com/read/29029586/use-and-misuse-of-opioids-in-chronic-pain
#15
Nora Volkow, Helene Benveniste, A Thomas McLellan
The prescribing of opioid analgesics for pain management-particularly for management of chronic noncancer pain (CNCP)-has increased more than fourfold in the United States since the mid-1990s. Yet there is mounting evidence that opioids have only limited effectiveness in the management of CNCP, and the increased availability of prescribed opioids has contributed to upsurges in opioid-related addiction cases and overdose deaths. These concerns have led to critical revisiting and modification of prior pain management practices (e...
October 13, 2017: Annual Review of Medicine
https://www.readbyqxmd.com/read/29029541/cancer-and-the-kidney-dangereoux-liasons-or-price-paid-for-the-progress-in-medicine
#16
REVIEW
Jolanta Małyszko, Leszek Kozlowski, Klaudia Kozłowska, Maciej Małyszko, Jacek Małyszko
A long time ago, the links between renal disease and malignancy were observed, however, quite recently, their importance was recognized and 'new' subspecialty in nephrology, namely 'onconephrology' was established. In the XXI century, patients with malignancy make up the most growing number of the subjects seen for nephrology consult and/or critical care nephrology services. A plethora of renal problems may be found in patients with malignancy. They may influence not only their short-term outcomes but also the adequate therapy of the underlying oncological problem...
September 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/29028071/how-to-isolate-a-ready-to-use-adipose-derived-stem-cells-pellet-for-clinical-application
#17
E Raposio, N Bertozzi
Adipose-derived stem cells (ASCs) are multipotent mesenchymal stem cells (MSCs) that show definitive stem cell characteristics such as plastic adherence in culture, ability to maintain multipotency upon in vitro expansion, and self-renewal capacity. ASCs are particularly promising for use in regenerative medicine because they can be harvested easily from adipose tissue by standard liposuction, with minimal donor site morbidity. Since ASCs do not necessitate ex vivo expansion to obtain clinically significant cell numbers, it is critical to identify a standardized method that maximizes the number of ASCs collected...
September 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29027419/-optimization-of-lime-milk-precipitation-process-of-lonicera-japonica-aqueous-extract-based-on-quality-by-design-concept
#18
Jin-Jing Shen, Xing-Chu Gong, Jian-Yang Pan, Hai-Bin Qu
Design space approach was applied in this study to optimize the lime milk precipitation process of Lonicera Japonica (Jinyinhua) aqueous extract. The evaluation indices for this process were total organic acid purity and amounts of 6 organic acids obtained from per unit mass of medicinal materials. Four critical process parameters (CPPs) including drop speed of lime milk, pH value after adding lime milk, settling time and settling temperature were identified by using the weighted standardized partial regression coefficient method...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29027412/-research-advances-in-secondary-development-of-chinese-patent-medicines-based-on-quality-by-design-concept
#19
Xing-Chu Gong, Teng Chen, Hai-Bin Qu
Quality by design (QbD) concept is an advanced pharmaceutical quality control concept. The application of QbD concept in the research and development of pharmaceutical processes of traditional Chinese medicines (TCM) mainly contains five parts, including the definition of critical processes and their evaluation criteria, the determination of critical process parameters and critical material attributes, the establishment of quantitative models, the development of design space, as well as the application and continuous improvement of control strategy...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29026940/advanced-bioanalytics-for-precision-medicine
#20
Aldo Roda, Elisa Michelini, Cristiana Caliceti, Massimo Guardigli, Mara Mirasoli, Patrizia Simoni
Precision medicine is a new paradigm that combines diagnostic, imaging, and analytical tools to produce accurate diagnoses and therapeutic interventions tailored to the individual patient. This approach stands in contrast to the traditional "one size fits all" concept, according to which researchers develop disease treatments and preventions for an "average" patient without considering individual differences. The "one size fits all" concept has led to many ineffective or inappropriate treatments, especially for pathologies such as Alzheimer's disease and cancer...
October 12, 2017: Analytical and Bioanalytical Chemistry
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