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Archives of Medical Science: AMS

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https://www.readbyqxmd.com/read/29765460/the-role-of-intestinal-microbiota-in-the-pathogenesis-of-nafld-starting-points-for-intervention
#1
Umberto Vespasiani-Gentilucci, Paolo Gallo, Antonio Picardi
In recent years, close links between intestinal microbiota and host metabolism have been recognized. Intestinal bacteria can participate in the extraction of calories from food, and circulation of bacterial products, in particular lipopolysaccharides (LPS), is responsible for the "metabolic endotoxemia", which contributes to insulin resistance and its complications, such as non-alcoholic fatty liver disease (NAFLD). Indeed, qualitative and quantitative intestinal dysbiotic changes have been clearly documented in NAFLD patients, and several mechanisms by which the intestinal microbiota can directly promote liver fat deposition, inflammation and fibrosis have also been described...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765459/the-number-of-strata-in-propensity-score-stratification-for-a-binary-outcome
#2
Markus Neuhäuser, Matthias Thielmann, Graeme D Ruxton
Introduction: Non-interventional and other observational studies have become important in medical research. In such observational, non-randomized studies, groups usually differ in some baseline covariates. Propensity scores are increasingly being used in the statistical analysis of these studies. Stratification, also called subclassification, based on propensity scores is one of the possible methods. There is the quasi-standard of using five strata. In this paper we focus on a binary outcome and evaluate the above-mentioned standard of using five strata...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765458/analysis-of-web-based-learning-methods-in-emergency-medicine-randomized-controlled-trial
#3
Piotr Leszczyński, Joanna Gotlib, Zbigniew Kopański, Arkadiusz Wejnarski, Stanisław Świeżewski, Robert Gałązkowski
Introduction: In medical education, Web-based learning is increasingly used as a complement to practical classes. The objective of the study was to perform a comparative analysis of three different forms of e-learning course on emergency medicine in terms of an indicator of knowledge growth and students' satisfaction. Material and methods: For the purpose of the study, we developed and implemented a tool in the form of an online course: A - non-animated presentation, B - video, C - interactive video...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765457/high-lncrna-hulc-expression-is-associated-with-poor-prognosis-and-promotes-tumor-progression-by-regulating-epithelial-mesenchymal-transition-in-prostate-cancer
#4
Pengyi Zheng, Huibing Li, Po Xu, Xiaohui Wang, Zhenguo Shi, Qingjiang Han, Zhijun Li
Introduction: Recently, increasing evidence has shown that long non-coding RNAs (lncRNAs) play critical roles in tumor progression and development. However, the expression pattern and biological function of lncRNA HULC (highly upregulated in liver cancer) in prostate cancer (PCa) remain largely unclear. Material and methods: The expression of lncRNA HULC in 53 paired PCa tissues and cell lines was detected by quantitative real-time polymerase chain reaction (qRT-PCR)...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765456/indomethacin-induced-gastric-damage-in-rats-and-the-protective-effect-of-donkey-milk
#5
Ebru Tastekin, Suleyman Ayvaz, Ufuk Usta, Nurettin Aydogdu, Ekrem Cancilar, Fulya Oz Puyan
Introduction: Indomethacin is an anti-inflammatory drug with clearly known side effects on gastric mucosa. New treatment and side effect prevention methods are being studied. Donkey milk, as a nutritional support, has recently come into the spotlight with its anti-oxidant features, high antibody content and low allergenic properties. In this study, we investigated donkey milk's possible protective effect against acute gastric mucosal damage by indomethacin. Material and methods: Four groups, each composed of 8 rats, were created...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765455/ringer-s-lactate-solution-enhances-the-inflammatory-response-during-fluid-resuscitation-of-experimentally-induced-haemorrhagic-shock-in-rats
#6
Krzysztof Kusza, Mariusz Mielniczuk, Lukasz Krokowicz, Jacek B Cywiński, Maria Siemionow
Introduction: Hemorrhagic shock leads to systemic oxygen deficit (hypoxaemia) that results in systemic inflammatory response syndrome (SIRS), a recognised cause of late mortality in this case. The aim of this study was to analyse the impact of fluid resuscitation, using two Ringer solutions, on the microcirculation changes that take place during experimentally induced haemorrhagic shock. Material and methods: A model of the rat cremaster muscle was used to assess microcirculation in vivo ...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765454/the-effects-of-ketamine-and-thiopental-used-alone-or-in-combination-on-the-brain-heart-and-bronchial-tissues-of-rats
#7
Elif Oral Ahiskalioglu, Pelin Aydin, Ali Ahiskalioglu, Bahadir Suleyman, Ufuk Kuyrukluyildiz, Nezahat Kurt, Durdu Altuner, Resit Coskun, Halis Suleyman
Introduction: We compared the side effects of ketamine and thiopental used alone and of a ketamine/thiopental combination dose on the brain,heart, and bronchial tissues of rats. Material and methods: Three groups received intraperitoneal injections of 30 mg/kg ketamine (K-30); 15 mg/kg thiopental (T-15); or of both in combination (KTSA). These doses were doubled in another set of study groups (K-60, T-30, and KTA groups, respectively). Optimal anesthesia duration was examined in all groups...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765453/therapeutic-inhibition-of-cxc-chemokine-receptor-2-by-sb225002-attenuates-lps-induced-acute-lung-injury-in-mice
#8
Qing Cao, Biru Li, Xike Wang, Kun Sun, Ying Guo
Introduction: Sustained neutrophilic infiltration is known to contribute to organ damage, such as acute lung injury (ALI). CXC chemokine receptor 2 (CXCR2) is the major receptor regulating inflammatory neutrophil recruitment in acute and chronic inflamed tissues. The purpose of this study was to investigate the functional relevance of the CXCR2 inhibitor SB225002 in LPS-induced acute lung injury. Material and methods: Male C57BL/6 mice were randomly divided into the following four experimental groups ( n = 10 per group): untreated group (control group, Ctr); LPS-treated ALI group (LPS group, LPS); LPS + PBS-treated group (LPS + PBS); and SB225002-treated ALI group (LPS + SB225002)...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765452/effects-and-potential-mechanism-of-atorvastatin-treatment-on-lp-pla2-in-rats-with-dyslipidemia
#9
Dongdan Zheng, Anping Cai, Rulin Xu, Zhuocheng Mai, Yingling Zhou, Fanfang Zeng, Liwen Li, Weiyi Mai
Introduction: The effects of statins on lipoprotein-associated phospholipase A2 (Lp-PLA2) are controversial, and the present study aimed to investigate whether atorvastatin could reduce Lp-PLA2 in rats with dyslipidemia. Material and methods: A high-fat and high-cholesterol diet was prescribed to produce a dyslipidemia model. Thereafter, low-dose atorvastatin (5 mg/kg/day), high-dose atorvastatin (20 mg/kg/day) or saline (without-treatment group) was prescribed for 14 days...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765451/sequencing-of-exons-4-5-12-of-coch-gene-in-patients-with-postlingual-sensorineural-hearing-loss-accompanied-by-vestibular-lesion
#10
Marzena Mielczarek, Jurek Olszewski, Piotr Pietkiewicz
Introduction: Mutations at the DFNA9 locus on chromosome 14q12 are the third most common form of DFNA hearing loss, which is clinically characterized by late onset (in adulthood) progressive sensorineural hearing loss accompanied by vestibular dysfunction. The aim of the study was to search for COCH gene mutations (P51S, V66G, G87W, G88E, V104del, I109N, W117R, A119T, M512T, C542Y) in patients with severe or profound sensorineural hearing loss accompanied by a vestibular lesion. Material and methods: The study was based on a group of 30 patients...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765450/lutein-prevents-osteoarthritis-through-nrf2-activation-and-downregulation-of-inflammation
#11
Yan-Qin Qiao, Pan-Feng Jiang, Yan-Zheng Gao
Introduction: Osteoarthritis is an inflammatory disorder associated with oxidative stress and apoptosis leading to cartilage destruction and impairment of cartilage formation. In the present study, we studied the protective effect of lutein against monosodium iodoacetate (MIA)-induced osteoarthritis in primary chondrocyte cells. Material and methods: Oxidative stress was determined through testing antioxidant status, reactive oxygen species levels and lipid peroxide content...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765449/effects-of-single-and-combined-low-frequency-electromagnetic-fields-and-simulated-microgravity-on-gene-expression-of-human-mesenchymal-stem-cells-during-chondrogenesis
#12
Susanne Mayer-Wagner, Florian Hammerschmid, Helmut Blum, Stefan Krebs, Julia I Redeker, Boris M Holzapfel, Volkmar Jansson, Peter E Müller
Introduction: Low frequency electromagnetic fields (LF-EMF) and simulated microgravity (SMG) have been observed to affect chondrogenesis. A controlled bioreactor system was developed to apply LF-EMF and SMG singly or combined during chondrogenic differentiation of human mesenchymal stem cells (hMSCs) in 3D culture. Material and methods: An external motor gear SMG bioreactor was combined with magnetic Helmholtz coils for EMF (5 mT; 15 Hz). Pellets of hMSCs (±TGF-β3) were cultured (P5) under SMG, LF-EMF, LF-EMF/SMG and control (1 g) conditions for 3 weeks...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765448/overexpressed-ho-1-is-associated-with-reduced-stat3-activation-in-preeclampsia-placenta-and-inhibits-stat3-phosphorylation-in-placental-jeg-3-cells-under-hypoxia
#13
Hong-Mei Qu, Li-Ping Qu, Xiao-Yan Li, Xian-Zhen Pan
Introduction: Inadequate trophoblast invasion and placentation are widely believed to contribute to preeclampsia, and multiple lines of evidence indicate the involvement of hypoxia in preeclampsia. However, the molecular mechanisms underlying the association of placental hypoxia with preeclampsia are not clear. Material and methods: The present study focused on the role in preeclampsia of heme oxygenase 1 (HO-1), which is an inducible isoform of HO in response to hypoxia, via examining the expression of HO-1 and the expression and phosphorylation (Tyr705) of Signal transducer and activator of transcription (STAT) 3 in preeclamptic placentas via the immunohistochemical method, western blotting assay and RT-qPCR method...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765447/microrna-141-inhibits-proliferation-of-gastric-cardia-adenocarcinoma-by-targeting-macc1
#14
Shubin Li, Jixian Zhu, Junjie Li, Shubo Li, Bin Li
Introduction: Abnormal expression of microRNAs (miRNAs) contributes to cancer development through regulating proliferation, apoptosis and drug resistance in cancer cells. The present study was designed to explore the effect and mechanism of miR-141 on gastric cardia adenocarcinoma (GCA). Material and methods: Forty-one paired GCA tissues and adjacent normal tissues were obtained from GCA patients never treated by chemotherapy or radiotherapy. QRT-PCR was used to detect the expression level of miR-141 in GCA...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765446/inhibitory-effect-of-pdgf-bb-and-serum-stimulated-responses-in-vascular-smooth-muscle-cell-proliferation-by-hinokitiol-via-up-regulation-of-p21-and-p53
#15
Jiun-Yi Li, Chun-Ping Liu, Wei-Cheng Shiao, Thanasekaran Jayakumar, Yi-Shin Li, Nen-Chung Chang, Shih-Yi Huang, Cheng-Ying Hsieh
Introduction: Vascular smooth muscle cell (VSMC) proliferation plays a major role in the progression of vascular diseases. In the present study, we established the efficacy and the mechanisms of action of hinokitiol, a tropolone derivative found in Chamaecyparis taiwanensis , Cupressaceae, in relation to platelet-derived growth factor-BB (PDGF-BB) and serum-dependent VSMC proliferation. Material and methods: Primary cultured rat VSMCs were pre-treated with hinokitiol and then stimulated by PDGF-BB (10 ng/ml) or serum (10% fetal bovine serum)...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765445/augmented-reality-in-neurosurgery
#16
Raniel Tagaytayan, Arpad Kelemen, Cecilia Sik-Lanyi
Neurosurgery is a medical specialty that relies heavily on imaging. The use of computed tomography and magnetic resonance images during preoperative planning and intraoperative surgical navigation is vital to the success of the surgery and positive patient outcome. Augmented reality application in neurosurgery has the potential to revolutionize and change the way neurosurgeons plan and perform surgical procedures in the future. Augmented reality technology is currently commercially available for neurosurgery for simulation and training...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765444/sequentiality-of-treatment-in-the-rheumatoid-arthritis-drug-programme-in-the-years-2009-2014
#17
Małgorzata Tłustochowicz, Andrzej M Śliwczyński, Melania Brzozowska, Zbigniew Teter, Michał Marczak
Approximately 1% of the population suffers from rheumatoid arthritis (RA) worldwide (0.45% in Poland). The therapy consists of the use of disease-modifying antirheumatic drugs (DMARDs). Biologics are used in the form of the drug programme. Analysis of the NHF database demonstrated the sequence of conversion between drugs and time spent in a single treatment. In 2009, the patients would start the following treatments: adalimumab 5.8%; etanercept 14.4%; infliximab 23.1%; leflunomide 53.6%; rituximab 3%. After the first year 16% of patients changed therapy or abstained, and in the second year this situation affected 65% of patients...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765443/management-of-cardiac-hemochromatosis
#18
Wilbert S Aronow
Iron-overload syndromes may be hereditary or acquired. Patients may be asymptomatic early in the disease. Once heart failure develops, there is rapid deterioration. Cardiac hemochromatosis is characterized by a dilated cardiomyopathy with dilated ventricles, reduced ejection fraction, and reduced fractional shortening. Deposition of iron may occur in the entire cardiac conduction system, especially the atrioventricular node. Cardiac hemochromatosis should be considered in any patient with unexplained heart failure...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765442/hepatitis-c-coinfection-adversely-affects-the-life-expectancy-of-people-living-with-hiv-in-northwestern-poland
#19
Magdalena Leszczyszyn-Pynka, Piotr Ciejak, Katarzyna Maciejewska, Magdalena Witak-Jędra, Malwina Karasińska-Cieślak, Ewa Karpińska, Marta Wawrzynowicz-Syczewska, Miłosz Parczewski
Introduction: Hepatitis C (HCV) infection adversely affects survival among people living with HIV, increasing mortality risk due to liver-related causes. In Poland HCV is found among ~30% of HIV infected individuals, with only a small percentage successfully treated for this coinfection. This study aimed to analyze the HCV-associated influence on the life expectancy among HIV/HCV coinfected patients from northwestern Poland. Material and methods: Longitudinal data of 701 (368 HIV monoinfected and 368 HIV/HCV coinfected) patients were investigated to assess the life expectancy and survival after HIV diagnosis...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29765441/suspected-unexpected-and-other-adverse-reactions-to-antiretroviral-drugs-used-as-post-exposure-prophylaxis-of-hiv-infection-five-year-experience-from-clinical-practice
#20
Justyna D Kowalska, Ewa Pietraszkiewicz, Ewa Firląg-Burkacka, Andrzej Horban
Introduction: With increased use of antiretroviral drugs (ARVs) in HIV uninfected persons, proper reporting on suspected unexpected serious adverse reactions (SUSARs) and continued insight into adverse drug reactions (ADRs) are needed for adequate information on safety of ARVs in such populations. Material and methods: Medical documentation of persons receiving ARVs after non-occupational HIV exposure (non-occupational post-exposure prophylaxis - nPEP) during 5 successive years (2009-2013) was evaluated by two HIV physicians...
April 2018: Archives of Medical Science: AMS
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