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Medical Science Monitor Basic Research

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https://www.readbyqxmd.com/read/28223681/effect-of-smoking-on-cognitive-functioning-in-young-saudi-adults
#1
Shahid Bashir, Faisal Alghamd, Ahmed Alhussien, Meshal Alohali, Abdullah Alatawi, Tariq Almusned, Syed Shahid Habib
BACKGROUND Smoking is the predominant form of tobacco consumption and is growing worldwide, particularly in the younger generation in the Middle-East. We aimed to determine the effects of tobacco smoking on cognitive functions among young Saudi adults. MATERIAL AND METHODS We recruited a group of cigarette smokers (N=22) and a group of controls (non-smokers) (N=30) from apparently healthy male volunteers aged 18-29 years. Cognitive function was assessed by using the Cambridge Neuropsychological Automated Battery (CANTAB)...
February 22, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28179618/increased-cortisol-and-cortisone-levels-in-overweight-children
#2
Lanling Chu, Kangwei Shen, Ping Liu, Kan Ye, Yu Wang, Chen Li, Xuejun Kang, Yuan Song
BACKGROUND It has been unclear whether relatively high cortisol and cortisone levels are related to overweight in childhood, parental body mass index (BMI), and family dietary habits. The aim of this study was to compare cortisol and cortisone levels in urine and saliva from overweight and normal children, as well as correlations between children's BMI, parental BMI and family dietary behavior questionnaire score (QS). MATERIAL AND METHODS We analyzed the data from 52 overweight children and 53 age- and sex-matched normal-weight children aged 4-5 years...
February 9, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28138124/comparative-analysis-of-renin-angiotensin-system-ras-related-gene-expression-between-hypertensive-and-normotensive-rats
#3
Chad R Williamson, Sandhya Khurana, Phong Nguyen, Collin J Byrne, T C Tai
BACKGROUND The renal renin-angiotensin system (RAS) is physiologically important for blood pressure regulation. Altered regulation of RAS-related genes has been observed in an animal model of hypertension (spontaneously hypertensive rats - SHRs). The current understanding of certain RAS-related gene expression differences between Wistar-Kyoto rats (WKYs) and SHRs is either limited or has not been compared. The purpose of this study was to compare the regulation of key RAS-related genes in the kidneys of adult WKYs and SHRs...
January 31, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28123171/m3-macrophages-stop-division-of-tumor-cells-in-vitro-and-extend-survival-of-mice-with-ehrlich-ascites-carcinoma
#4
Sergey Kalish, Svetlana Lyamina, Eugenia Manukhina, Yuri Malyshev, Anastasiya Raetskaya, Igor Malyshev
BACKGROUND M1 macrophages target tumor cells. However, many tumors produce anti-inflammatory cytokines, which reprogram the anti-tumor M1 macrophages into the pro-tumor M2 macrophages. We have hypothesized that the problem of pro-tumor macrophage reprogramming could be solved by using a special M3 switch phenotype. The M3 macrophages, in contrast to the M1 macrophages, should respond to anti-inflammatory cytokines by increasing production of pro-inflammatory cytokines to retain its anti-tumor properties. Objectives of the study were to form an M3 switch phenotype in vitro and to evaluate the effect of M3 macrophages on growth of Ehrlich ascites carcinoma (EAC) in vitro and in vivo...
January 26, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28077838/low-grade-metabolically-induced-inflammation-mediators-interleukin-6-adiponectin-and-tnf-%C3%AE-serum-levels-in-obese-pregnant-patients-in-the-perinatal-period
#5
Malgorzata Zembala-Szczerba, Andrzej Jaworowski, Hubert Huras, Dorota Babczyk, Robert Jach
BACKGROUND Obesity is a major clinical problem. The number of obese pregnant women is rising rapidly. The consequences of obesity are significant and affect every aspect of perinatal care for both the mother and the developing fetus. Adipose tissue may be responsible for chronic subclinical inflammation in obesity, being a source of inflammatory mediators. The study was designed to evaluate the analysis of the serum concentration of inflammatory mediators, including interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and adiponectin, in obese pregnant women at full-term pregnancies...
January 12, 2017: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/28033308/effects-of-polysaccharide-of-gastrodia-elata-blume-and-electro-acupuncture-on-expressions-of-brain-derived-neurotrophic-factor-and-stem-cell-factor-protein-in-caudate-putamen-of-focal-cerebral-ischemia-rats
#6
Huai-Bin Li, Feng Wu, Hua-Chun Miao, Ke-Ren Xiong
BACKGROUND The aim of this study was to explore the neural protective effect of polysaccharide of Gastrodia elata Blume (PGB) and electro-acupuncture (EA) on focal cerebral ischemia rats. MATERIAL AND METHODS A total of 40 Sprague-Dawley rats were randomly divided into 5 groups (normal group, model group, PGB group, EA group and PGB+EA group). The model was prepared by middle cerebral artery occlusion (MCAO). Two week after modeling, rats were given PGB, EA, or a combination of the 2 in continuous treatment for 2 successive weeks...
December 23, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27980322/sirtuin1-sirt1-regulates-tumor-necrosis-factor-alpha-tnf-%C3%AE-induced-aquaporin-2-aqp2-expression-in-renal-medullary-collecting-duct-cells-through-inhibiting-the-nf-%C3%AE%C2%BAb-pathway
#7
Qinqin Lin, Yuanwen Geng, Shuaishuai Lin, Zhenjun Tian
BACKGROUND Aquaporin-2 (AQP2) plays a major role in water reabsorption in the renal collecting duct, and is involved in a variety of renal disease. Recent studies have indicate that sirtuin1 (SIRT1) exerts renoprotective properties against kidney diseases. This study aimed to determine the potential role of SIRT1 in AQP2 expression induced by tumor necrosis factor-alpha (TNF-α) and to disclose the underlying mechanism in renal inner medullary collecting duct (IMCD) cells. MATERIAL AND METHODS Quantitative real-time PCR and Western blotting were respectively identified mRNA and protein expression...
December 16, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27932777/phototoxicity-of-liposomal-zn-and-al-phthalocyanine-against-cervical-and-oral-squamous-cell-carcinoma-cells-in-vitro
#8
Jason Young, Michael Yee, Hayoung Kim, Jennifer Cheung, Takahiro Chino, Nejat Düzgüneş, Krystyna Konopka
Background Material and Methods Results Conclusions.
December 9, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27899789/body-mass-index-can-increase-the-risk-of-gallbladder-cancer-a-meta-analysis-of-14-cohort-studies
#9
Hao Liu, Yong Zhang, Min Ai, Jun Wang, Bo Jin, Zhaowei Teng, Yansheng Wang, Li Li
BACKGROUND This study sought to appraise the association between raised body mass index (BMI) and the risk of gallbladder cancer (GBC) by performing a meta-analysis of 14 cohort studies. MATERIAL AND METHODS Eligible cohort studies were selected by searching PubMed and EMBASE from their inception to May 26, 2016, and the reference lists of retrieved articles were also consulted. The information was screened by two authors separately. We used a fixed-effects model to calculate the overall pooled risk estimates...
November 30, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27847384/parathyroid-hormone-induced-bone-marrow-mesenchymal-stem-cell-chondrogenic-differentiation-and-its-repair-of-articular-cartilage-injury-in-rabbits
#10
Yushu Chen, Yi Chen, Shujiang Zhang, Xiufan Du, Bo Bai
BACKGROUND We explored the effect of parathyroid hormone (PTH)-induced bone marrow stem cells (BMSCs) complexed with fibrin glue (FG) in the repair of articular cartilage injury in rabbits. MATERIAL AND METHODS Forty-eight rabbits randomized into four groups were subjected to articular surgery (cartilage loss). The PTH and non-PTH intervention groups included transplantation with PTH/BMSC/FG xenogeneic and BMSC/FG xenogeneic complexes, respectively, into the injured area. The injured group contained no transplant while the control group comprised rabbits without any articular injury...
November 16, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27803495/total-artificial-heart-implantation-after-undifferentiated-high-grade-sarcoma-excision
#11
Jamila Kremer, Mina Farag, Rawa Arif, Andreas Brcic, Anton Sabashnikov, Bastian Schmack, Aron-Frederik Popov, Matthias Karck, Pascal M Dohmen, Arjang Ruhparwar, Alexander Weymann
BACKGROUND Total artificial heart (TAH) implantation in patients with aggressive tumor infiltration of the heart can be challenging. CASE REPORT We report on a patient with a rare primary undifferentiated high-grade spindle cell sarcoma of the mitral valve and in the left atrium, first diagnosed in 2014. The referring center did a first resection in 2014. In the course of 17 months, computer tomography (CT) scan again showed massive invasion of the mitral valve and left atrium. Partial resection and mitral valve replacement was not an option...
November 2, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27777397/evaluation-of-the-maintained-effect-of-3-hypertonic-saline-solution-in-an-animal-model-of-intracranial-hypertension
#12
Leonardo M Sousa, Almir F de Andrade, Alessandro R Belon, Matheus S Soares, Robson Luis Amorim, Jose Pinhata Otochi, Manoel J Teixeira, Wellingson S Paiva
BACKGROUND Current clinical treatment methods for refractory intracranial hypertension include elevation of the decubitus, ventilation adjustment, and use of hypertonic solutions such as hypertonic saline and mannitol solutions. Previous studies have shown that hypertonic solutions are particularly effective. Although several concentrations of saline solution have been proposed, a 3% solution is the most widely used. The aim of this study was to evaluate the maintained efficacy of a 3% hypertonic saline solution in an experimental model of intracranial hypertension...
October 25, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27739419/effects-of-multidirectional-vibrations-delivered-in-a-horizontal-position-andullation%C3%A2-on-blood-microcirculation-in-laboratory-animals-a-preliminary-study
#13
Frederic Pastouret, Lucia Cardozo, Jan Lamote, Ronald Buyl, Pierre Lievens
BACKGROUND A whole-body vibration technique delivered in a horizontal position through a massage mattress was introduced in 2007. The present study analyzed the effects of different exposure periods to these vibrations on microcirculation of mice. MATERIAL AND METHODS Different periods of vibrations (30Hz) were locally delivered in a horizontal position on the external abdominal skin in 3 randomized groups of mice (N=42). The 3 groups receiving vibrations were compared to an untreated control group (N=14). The 3 experimental groups received 3, 6, and 10 min of vibrations...
October 14, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27698339/total-arterial-revascularization-bypassing-antiquated-notions-to-better-alternatives-for-coronary-artery-disease
#14
Mostafa Samak, Javid Fatullayev, Anton Sabashnikov, Mohamed Zeriouh, Bastian Schmack, Arjang Ruhparwar, Matthias Karck, Aron-Frederik Popov, Pascal M Dohmen, Alexander Weymann
Total arterial revascularization is the leading trend in coronary artery bypass grafting (CABG) for the treatment of coronary artery disease (CAD). Adding to its superiority to vein conduits, arteries allow for a high degree of versatility and long-term patency, while minimizing the need for reintervention. This is especially important for patients with multi-vessel coronary artery disease, as well as young patients. However, arterial revascularization has come a long way before being widely appreciated, with some yet unresolved debates, and advances that never cease to impress...
October 4, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27667570/osteoblast-differentiation-at-a-glance
#15
Arkady Rutkovskiy, Kåre-Olav Stensløkken, Ingvar Jarle Vaage
Ossification is a tightly regulated process, performed by specialized cells called osteoblasts. Dysregulation of this process may cause inadequate or excessive mineralization of bones or ectopic calcification, all of which have grave consequences for human health. Understanding osteoblast biology may help to treat diseases such as osteogenesis imperfecta, calcific heart valve disease, osteoporosis, and many others. Osteoblasts are bone-building cells of mesenchymal origin; they differentiate from mesenchymal progenitors, either directly or via an osteochondroprogenitor...
September 26, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27616137/a-versatile-method-for-immunofluorescent-staining-of-cells-cultured-on-permeable-membrane-inserts
#16
Jenni L Gillespie, Anwuli Anyah, John M Taylor, Jerry W Marlin, Tracey A H Taylor
BACKGROUND Obtaining high-quality images of cellular structures via immunofluorescence staining is critical for cellular localization studies. Often, these studies cannot be performed in parallel with certain oncology, virology, pharmacokinetic, and drug absorption studies due to model system technicalities requiring the cells to be cultured on porous membranes rather than glass or plastic. MATERIAL AND METHODS Here, we report a method of immunofluorescent staining of cells cultured on permeable membranes. RESULTS As proof of principle, HeLa cells grown on Transwell® membrane supports were stained with fluorescently labeled antibodies using this modified immunofluorescence staining method and visualized by fluorescent microscopy...
September 12, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27554918/membrane-glycolipids-content-variety-in-gastrointestinal-tumors-and-transplantable-hepatomas-in-mice
#17
Jun Lv, Can Qun Lv, Bo-Liang Wang, Ping Mei, Lei Xu
BACKGROUND The aim of this study was to investigate the variety of plasma contents of membrane glycolipids in 65 gastrointestinal tumors and 31 transplant hepatomas in mice. MATERIAL AND METHODS The experimental model was a transplantable murine hepatoma. Experimental mice were divided into 3 groups. RESULTS The LSA and TSA content in the 2 groups were significantly difference (p<0.01), and were significantly lower in the therapeutic group than in the control group (p<0.01). CONCLUSIONS These results indicate that membrane glycolipids index LSA and TSA are sensitive markers in gastrointestinal tumors...
August 24, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27503745/association-of-hla-drb1-gene-polymorphism-with-risk-of-asthma-a-meta-analysis
#18
Yingshui Yao, Lijun Zhu, Jie Li, Yuelong Jin, Lianping He
BACKGROUND The relationship between HLA-DRB1 alleles and asthma is controversial. The purpose of this study was to evaluate the relationship between HLA-DRB1 alleles and risk of asthma. MATERIAL AND METHODS We searched PubMed, Chinese National Knowledge Infrastructure (CNKI), Wan Fang (Chinese) database, and Chinese Biomedical Medical databases (CBM) to find studies on the relationship between HLA-DRB1 alleles and risk of asthma. We calculated the pooled odds ratio (OR) and 95% confidence interval (CI) using STATA 12...
August 9, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27450399/cardiac-hypertrophy-an-introduction-to-molecular-and-cellular-basis
#19
REVIEW
Mostafa Samak, Javid Fatullayev, Anton Sabashnikov, Mohamed Zeriouh, Bastian Schmack, Mina Farag, Aron-Frederik Popov, Pascal M Dohmen, Yeong-Hoon Choi, Thorsten Wahlers, Alexander Weymann
Ventricular hypertrophy is an ominous escalation of hemodynamically stressful conditions such as hypertension and valve disease. The pathophysiology of hypertrophy is complex and multifactorial, as it touches on several cellular and molecular systems. Understanding the molecular background of cardiac hypertrophy is essential in order to protect the myocardium from pathological remodeling, or slow down the destined progression to heart failure and cardiomyopathy. In this review we highlight the most important molecular aspects of cardiac hypertrophic growth in light of the currently available published research data...
July 23, 2016: Medical Science Monitor Basic Research
https://www.readbyqxmd.com/read/27425199/moving-back-to-the-future-use-of-organ-care-system-lung-for-lobectomy-before-lobar-lung-transplantation
#20
Anton Sabashnikov, Mohamed Zeriouh, Prashant N Mohite, Nikhil P Patil, Diana García-Sáez, Bastian Schmack, Simona Soresi, Pascal M Dohmen, Aron-Frederik Popov, Alexander Weymann, André R Simon, Fabio De Robertis
BACKGROUND Lung transplantation remains the gold standard treatment for patients with end-stage lung disease. Lobar lung transplantation allows for transplantation of size-mismatch donor lungs in small recipients; however, donor lung volume reduction represents a challenging surgical technique. In this paper we present our initial experience with bilateral lobectomy in donor lungs before lobar lung transplantation using normothermic perfusion on the Organ Care System (OCS) Lung. MATERIAL AND METHODS Specifics of the surgical technique for donor lung instrumentation on the OCS, lobar dissection on the OCS, and right and left donor lobectomies are presented in detail...
July 13, 2016: Medical Science Monitor Basic Research
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