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https://www.readbyqxmd.com/read/28727932/laboratory-studies-of-methane-and-its-relationship-to-prebiotic-chemistry
#1
Kensei Kobayashi, Wolf D Geppert, Nathalie Carrasco, Nils G Holm, Olivier Mousis, Maria Elisabetta Palumbo, J Hunter Waite, Naoki Watanabe, Lucy M Ziurys
To examine how prebiotic chemical evolution took place on Earth prior to the emergence of life, laboratory experiments have been conducted since the 1950s. Methane has been one of the key molecules in these investigations. In earlier studies, strongly reducing gas mixtures containing methane and ammonia were used to simulate possible reactions in the primitive atmosphere of Earth, producing amino acids and other organic compounds. Since Earth's early atmosphere is now considered to be less reducing, the contribution of extraterrestrial organics to chemical evolution has taken on an important role...
July 20, 2017: Astrobiology
https://www.readbyqxmd.com/read/28727135/the-role-of-metalloproteinases-in-endometrial-remodelling-during-menstrual-cycle
#2
Barbara Grzechocińska, Filip Dąbrowski, Anna Cyganek, Grzegorz Panek, Mirosław Wielgoś
Endometrium is the only tissue in the human body subject to cyclic transformations under the influence of ovarian steroid hormones. As estradiol and progesterone balance throughout the physiological menstrual cycle changes, so does the expression of metalloproteinases (MMPs). These endopeptides are responsible for keeping the balance between the process of synthesis and degradation of extracellular matrix proteins. Thus, MMP's take part in sustaining physiological stability of the endometrium. A number of MMPs found in the endometrial tissue and their activity is related to menstrual cycle phase...
2017: Ginekologia Polska
https://www.readbyqxmd.com/read/28726436/is-it-intestinal-tuberculosis-again-case-report
#3
Kristián Brat, Zdeněk Merta, Ivan Čundrle
This case report focuses on an immigrant admitted to the Department of Respiratory Diseases, University Hospital Brno due to suspicion of relapsing intestinal tuberculosis. The patient presented with fever, night sweat, weight loss, diarrhea, and a history of several tuberculosis attacks in the last few years. None of the examinations confirmed the presence of active tuberculosis but raised suspicion of hematological malignancy. Pancytopenia was present in the peripheral blood. However, bone marrow examination and flowcytometry excluded the presence of a hematological malignancy...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726435/-acute-lymphoblastic-leukemia-of-adults-a-case-of-prolonged-hip-pain-diagnostics-with-a-surprising-conclusion-case-report
#4
Štěpán Hrabovský, František Folber, Barbora Jurová, Zdeněk Řehák, Michael Doubek
Though acute lymphoblastic leukemia (ALL) is the most common malignancy of childhood age, it is a rare diagnosis in adults. This disease often manifests with common and nonspecific symptoms, so it can easily escape an early diagnostics without a proper blood count examination. We present a case of an adult ALL patient suffering only from severe hips and thighs pain, without any significant blood count abnormities leading to the diagnostics. In the second part of the article, we summarize current highlights regarding this disease...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726434/-salvation-of-the-diabetic-foot-through-a-comprehensive-individualized-treatment-of-the-patient-with-type-2-diabetes-case-study
#5
Ivana Flanderová
This is a case of men with type 2 diabetes mellitus and diabetic foot. The patient was in danger of limb amputation. After improvement of diabetes, hypertension and dyslipidemia therapies a comprehensive treatment of diabetic foot including angioplasty, antibiotics and local maggot therapy was used for diabetic foot management. Therapy result was very satisfying for the patient. Despite of amputation of the 2nd digit due to advanced gangrene, the whole foot function was saved.Key words: diabetes foot - maggot therapies - type 2 diabetes mellitus...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726433/gastric-antral-vascular-ectasia-and-solitary-rectal-ulcer-syndrome-two-rare-diagnoses-as-the-cause-of-anemia-in-a%C3%A2-single-patient-case-report
#6
Lumír Kunovský, Milan Dastych, Radek Kroupa, Beata Hemmelova, Katarina Muckova, Miroslava Chovancova, Lenka Kucerova, Jiri Dolina
Gastric antral vascular ectasia (GAVE) and solitary rectal ulcer syndrome (SRUS) are both mentioned in the literature as rare causes of iron deficiency anemia and gastrointestinal (GI) bleeding. GAVE accounts for up to 4 % of upper non-variceal GI bleeding; SRUS is a rare benign disorder that presents with rectal bleeding. We present the case of a 75-year-old patient who was admitted to our facility with anemia. In the same patient, we encountered chronic bleeding from GAVE and SRUS. Both diagnoses were treated endoscopically: GAVE by argon plasma coagulation and a subsequent treatment with proton pump inhibitors and SRUS by adrenaline injection and clipping, consecutively treated with mesalazine enemas...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726432/-news-in-the-treatment-of-hypertension-and-dyslipidemia
#7
Jan Václavík
These review article presents the results of major recent studies in cardiovascular prevention. HOPE-3 study showed that people with medium cardiovascular risk who have not experienced a cardiovascular event, and have normal blood pressure, benefit from deploying a statin, and in the presence of hypertension benefit from deploying a combination of a statin and antihypertensive drugs. Studies evaluating genetic predisposition brought new evidence that both LDL cholesterol and systolic blood pressure are independent and multiplicative causal risk factors for cardiovascular events...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726431/-what-has-the-glagov-clinical-study-shown
#8
Ján Murín
If we want to favorably influence the cardiovascular atherosclerotic disease, it is necessary to significantly lower LDL-C blood levels. PCSK9 inhibitors can significantly reduce LDL-cholesterol levels, being administered together with statins. However we focus on establishing whether this plays a role in influencing coronary atherosclerosis. The GLAGOV study is a multicentric, double-blinded and placebo-controlled study which during a 76-week period followed an impact of the treatment with evolocumab (PCSK9i) together with statin on the status of coronary atherosclerosis in patients with ischemic heart disease, and in comparison with the statin treatment...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726430/-thoughts-about-valvular-abnormalities-yesterday-and-today
#9
Pavel Gregor, Hana Línková
The article deals with the problems of acquired valvular disorders. It mainly focuses on the new findings regarding ethiopathogenesis, diagnostics, evaluation and treatment, especially catheterization. In advanced countries, post-rheumatic abnormalities have almost disappeared, their current etiology has substantially changed (mitral stenosis). The earlier relatively rare degenerative changes now predominate, mainly affecting older patients (aortic stenosis). Also the treatment methods for acquired abnormalities have substantially changed - currently catheterization approaches are used more frequently in their correction...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726429/-osteoprotective-therapy-with-bisphosphonates-or-denosumab-in-patients-with-multiple-myeloma-benefit-and-risks
#10
Zdeněk Adam, Jan Straub, Marta Krejčí, Luděk Pour, Dagmar Brančíková, Lenka Ostřížková, Viera Sandecká, Martin Štork
Bisphosphonates have been used during the complete treatment of multiple myeloma for more than twenty years. They slow osteolysis and thereby contribute to the improvement of quality of life. Their long-term use, however, is related to 2 serious, usually later appearing complications: osteonecrosis of the jaw, occurring in 6-9 % of patients, and rarer atypical bone fractures. Both these complications are very difficult to heal, and all the more emphasis is therefore laid on prevention. This first of all includes discussion about the risk with the patient, followed by a dental checkup before the commencement of therapy and then repeated during its course, as well as reduced use of these drugs for a necessary period of time...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28726428/-a-present-view-on-ivabradine-in-the-therapy-of-cardiovascular-diseases
#11
Jiří Slíva
Cardiovascular illnesses belong to diseases with the highest prevalence. They are also the most predominant reason of death in the vast majority of European countries. Hence, the offer of effective treatment of these dis-eases is absolutely crucial. This text focuses on the current therapeutical use of ivabradine in its approved indications - chronic stable angina pectoris and chronic heart failure - in the context of so far published relevant clinical trials.Key words: angina pectoris - bradines - heart failure - If current - ischemic heart disease - ivabradine...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28724811/quantitative-physiological-measurements-to-evaluate-the-response-of-antivascular-endothelial-growth-factor-treatment-in-patients-with-neovascular-diseases
#12
REVIEW
In Hwan Hong, Sung Pyo Park
Antivascular endothelial growth factor (VEGF) treatment is still used intravitreally worldwide for various neovascular diseases, despite other available, approved treatments. We performed a systematic search of the literature focused on visual physiology studies. We used the online biomedical search engine PubMed and searched key words including "M-chart," "Preferential Hyperacuity Perimetry," "microperimetry," (MP) "electroretinography," and "contrast sensitivity" to estimate treatment efficacy of anti-VEGF treatments in a quantitative manner...
July 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28723252/across-the-continuum-how-inpatient-palliative-care-consultations-are-reported-in-hospital-discharge-summaries
#13
Nikki Miller, John Shuler, Deon Hayley, Jianghua He, Karin Porter-Williamson, Jessica Kalender-Rich
BACKGROUND: Inpatient Palliative Care (PC) consultations help develop a patient-centered and quality-of-life-focused plan of care for patients with serious illness. Discharge summaries (DSs) are an essential tool to maintain continuity of these care plans across multiple locations and providers. METHODS: We conducted a retrospective chart review of selected DSs of patients who received inpatient PC consultations at the University of Kansas Hospital from July 2011 to May 2015...
July 19, 2017: Journal of Palliative Medicine
https://www.readbyqxmd.com/read/28723229/the-formation-of-nucleobases-from-the-ultraviolet-photoirradiation-of-purine-in-simple-astrophysical-ice-analogues
#14
Christopher K Materese, Michel Nuevo, Scott A Sandford
Nucleobases are the informational subunits of RNA and DNA and are essential to all known forms of life. The nucleobases can be divided into two groups of molecules: the pyrimidine-based compounds that include uracil, cytosine, and thymine, and the purine-based compounds that include adenine and guanine. Previous work in our laboratory has demonstrated that uracil, cytosine, thymine, and other nonbiological, less common nucleobases can form abiotically from the UV photoirradiation of pyrimidine in simple astrophysical ice analogues containing combinations of H2O, NH3, and CH4...
July 19, 2017: Astrobiology
https://www.readbyqxmd.com/read/28723157/role-of-graphene-in-reducing-fatigue-damage-in-cu-gr-nanolayered-composite
#15
Byungil Hwang, Wonsik Kim, Jaemin Kim, Subin Lee, Seoyoen Lim, Sangmin Kim, Sang Ho Oh, Seunghwa Ryu, Seung Min Jane Han
Nanoscale metal/graphene nanolayered composite is known to have ultra-high strength as the graphene effectively blocks dislocations from penetrating through the metal/graphene interface. The same graphene interface, which has a strong sp2 bonding, can simultaneously serve as an effective interface for deflecting the fatigue cracks that are generated under cyclic bending cycles. In this study, Cu/Gr composite with repeat layer spacing of 100 nm was tested for bending fatigue at 1.6% and 3.1% strain up to 1,000,000 cycles that showed for the first time a 5-6 times enhancement in fatigue resistance compared to the conventional Cu thin film...
July 19, 2017: Nano Letters
https://www.readbyqxmd.com/read/28718087/speaking-two-languages-in-america-a-semantic-space-analysis-of-how-presidential-candidates-and-their-supporters-represent-abstract-political-concepts-differently
#16
Ping Li, Benjamin Schloss, D Jake Follmer
In this article we report a computational semantic analysis of the presidential candidates' speeches in the two major political parties in the USA. In Study One, we modeled the political semantic spaces as a function of party, candidate, and time of election, and findings revealed patterns of differences in the semantic representation of key political concepts and the changing landscapes in which the presidential candidates align or misalign with their parties in terms of the representation and organization of politically central concepts...
July 17, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28713485/micrornas-and-autophagy-fine-players-in-the-control-of-chondrocyte-homeostatic-activities-in-osteoarthritis
#17
REVIEW
Stefania D'Adamo, Silvia Cetrullo, Manuela Minguzzi, Ylenia Silvestri, Rosa Maria Borzì, Flavio Flamigni
Osteoarthritis (OA) is a debilitating degenerative disease of the articular cartilage with a multifactorial etiology. Aging, the main risk factor for OA development, is associated with a systemic oxidative and inflammatory phenotype. Autophagy is a central housekeeping system that plays an antiaging role by supporting the clearance of senescence-associated alterations of macromolecules and organelles. Autophagy deficiency has been related to OA pathogenesis because of the accumulation of cellular defects in chondrocytes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28711591/touching-the-void-first-and-third-person-perspectives-in-two-cases-of-autobiographical-amnesia-linked-to-temporal-lobe-epilepsy
#18
Adam Zeman, Marcus Byruck, Peter Tallis, Keith Vossel, Daniel Tranel
Temporal lobe epilepsy (TLE) can be associated with a marked impairment of autobiographical memory. This is occasionally its presenting feature. We describe two individuals with severe epilepsy-associated autobiographical memory loss. Both MB and PT were reassured initially that their memory was intact on the basis of standard neuropsychological tests. Both have written detailed accounts of their symptoms. The key neuropsychological features of their cases are the relative normality of performance on standard memory tests, with preservation of semantic memory for impersonal information, in contrast to a profound amnesia for salient autobiographical episodes and an impoverishment of imaginative scene construction...
July 12, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/28711310/acquired-heterotopic-ossification-of-the-temporomandibular-joint
#19
REVIEW
L G Mercuri, B M Saltzman
Although the risk factors and diagnosis of heterotopic ossification (HO) are discussed in the orthopedics literature, the etiology of HO, as well as its prevention and management, remain theoretical. Furthermore, there is a lack of information in the literature regarding HO in temporomandibular joint replacement (TMJR). This article provides a qualitative review of information relative to the etiology, diagnosis, and management of HO to inform and encourage further investigation in TMJR. The orthopedic HO literature considered for this qualitative review was drawn from a comprehensive examination of the subject published previously by one of the authors...
July 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28709384/beyond-words-using-qualitative-video-methods-for-researching-occupation-with-young-children
#20
Helen Lynch, Mandy Stanley
Researching with children is fundamental for furthering our understanding of children's occupational worlds. Furthermore, researching occupation from a transactional perspective is important for gaining a deeper understanding. However historically, most approaches to researching with children do not capture the transactional nature of occupation. The use of video methods in qualitative research is proposed as a potential solution. This article illustrates how videography can be used as an effective, inclusive qualitative research method, and uses a study of infant play occupation to illuminate video techniques...
July 1, 2017: OTJR: Occupation, Participation and Health
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