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https://www.readbyqxmd.com/read/28212347/molecularly-imprinted-sol-gel-based-qcm-sensor-arrays-for-the-detection-and-recognition-of-volatile-aldehydes
#1
Chuanjun Liu, Bartosz Wyszynski, Rui Yatabe, Kenshi Hayashi, Kiyoshi Toko
The detection and recognition of metabolically derived aldehydes, which have been identified as important products of oxidative stress and biomarkers of cancers; are considered as an effective approach for early cancer detection as well as health status monitoring. Quartz crystal microbalance (QCM) sensor arrays based on molecularly imprinted sol-gel (MISG) materials were developed in this work for highly sensitive detection and highly selective recognition of typical aldehyde vapors including hexanal (HAL); nonanal (NAL) and bezaldehyde (BAL)...
February 16, 2017: Sensors
https://www.readbyqxmd.com/read/28211304/granisetron-and-carvedilol-can-protect-experimental-rats-againstadjuvant-induced-arthritis
#2
Yasmin Moustafa Ahmed, Basim Anwar Shehata Messiha, Ali Ahmed Abo-Saif
CONTEXT: Rheumatoid arthritis (RA), a disabling autoimmune disorder of the joints as well as other organs, affects about 1% of population. Unfortunately, all current treatments of RA cause severe gastrointestinal, renal and other complications. OBJECTIVE: We aimed to evaluate the possible antiarthritic effects of a serotonin 5-HT3 receptor blocker, granisetron, and a nonselective adrenergic receptor blocker, carvedilol, on complete Freund's adjuvant-induced RA in adult female albino rats...
April 2017: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/28210739/retinal-oxidative-stress-at-the-onset-of-diabetes-determined-by-synchrotron-ftir-widefield-imaging-towards-diabetes-pathogenesis
#3
Ebrahim Aboualizadeh, Mahsa Ranji, Christine M Sorenson, Reyhaneh Sepehr, Nader Sheibani, Carol J Hirschmugl
Diabetic retinopathy is a microvascular complication of diabetes that can lead to blindness. In the present study, we aimed to determine the nature of diabetes-induced, highly localized biochemical changes in the neuroretina at the onset of diabetes. High-resolution synchrotron Fourier transform infrared (s-FTIR) wide field microscopy coupled with multivariate analysis (PCA-LDA) was employed to identify biomarkers of diabetic retinopathy with spatial resolution at the cellular level. We compared the retinal tissue prepared from 6-week-old Ins2(Akita/+) heterozygous (Akita/+, N = 6; a model of diabetes) male mice with the wild-type (control, N = 6) mice...
February 17, 2017: Analyst
https://www.readbyqxmd.com/read/28210241/outer-membrane-proteins-form-specific-patterns-in-antibiotic-resistant-edwardsiella-tarda
#4
Bo Peng, Chao Wang, Hui Li, Yu-Bin Su, Jin-Zhou Ye, Man-Jun Yang, Ming Jiang, Xuan-Xian Peng
Outer membrane proteins of Gram-negative bacteria play key roles in antibiotic resistance. However, it is unknown whether outer membrane proteins that respond to antibiotics behave in a specific manner. The present study specifically investigated the differentially expressed outer membrane proteins of an antibiotic-resistant bacterium, Edwardsiella tarda, a Gram-negative pathogen that can lead to unnecessary mass medication of antimicrobials and consequently resistance development in aquaculture and a spectrum of intestinal and extraintestinal diseases in humans...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28209006/a-comparative-evaluation-of-serum-magnesium-in-diabetes-mellitus-type-2-patients-with-and-without-periodontitis-a-clinico-biochemical-study
#5
Akshatha Shetty, Rahul Bhandary, Biju Thomas, Amitha Ramesh
INTRODUCTION: Magnesium is an essential cation playing a crucial role in many physiological functions and its imbalance is associated with greater number of pathological situations. Oxidative stress is usually increased due to decreased essential nutrients. Hence, any imbalance of essential nutrients like serum magnesium can significantly play a role in the pathobiology of periodontitis in the presence of diabetes, as diabetes and chronic periodontitis are two chronic diseases that have been biologically linked...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28208242/chemiluminescence-of-lucigenin-allantoin-and-its-application-for-the-detection-of-allantoin
#6
Muhammad Saqib, Baohua Lou, Mohamed Ibrahim Halawa, Shimeles Addisu Kitte, Zhongyuan Liu, Guobao Xu
Allantoin has been reported as a promising biomarker for monitoring of oxidative stress in humans and widely utilized in a variety of topical pharmaceuticals and cosmetics. Currently, the detection of allantoin is achieved by using chromatographic coupled techniques, which needs sample pre-extraction, derivatization, complex matrixes, and expensive instrumentation. Herein we report both the intense chemiluminescence of allantoin with lucigenin and the chemiluminescent detection of allantoin for the first time...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28207331/a-systematic-review-of-cardiovascular-disease-in-sexual-minorities
#7
Billy A Caceres, Abraham Brody, Rachel E Luscombe, Jillian E Primiano, Peter Marusca, Edward M Sitts, Deborah Chyun
BACKGROUND: Mental health and HIV disparities are well documented among sexual minorities, but there is a dearth of research on other chronic conditions. Cardiovascular disease remains the leading cause of death worldwide. Although sexual minorities have high rates of several modifiable risk factors for cardiovascular disease (including stress, tobacco use, and alcohol consumption), there is a paucity of research in this area. OBJECTIVES: In this systematic review, we synthesized and critiqued the existing evidence on cardiovascular disease among sexual minority adults...
February 16, 2017: American Journal of Public Health
https://www.readbyqxmd.com/read/28207162/plasma-oxidative-stress-and-inflammatory-biomarkers-are-associated-with-the-sizes-of-the-left-atrium-and-pulmonary-vein-in-atrial-fibrillation-patients
#8
Jin-Yi Li, Yan He, Hong-Hong Ke, Yu Jin, Zhi-Yuan Jiang, Guo-Qiang Zhong
BACKGROUND: Oxidative stress and inflammatory processes are responsible for the pathogenesis of AF, but their relationship with the sizes of the LA and PVs in AF patients remains unclear. HYPOTHESIS: Oxidative stress and inflammatory processes are associated with the sizes of the LA and PVs in AF patients. METHODS: 82 AF patients were compared to 30 control patients by using a case-control study design. Oxidative stress, inflammatory biomarkers and the sizes of the LA and PVs were detected...
February 16, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28203476/development-of-a-novel-sensitive-selective-and-fast-methodology-to-determine-malondialdehyde-in-leaves-of-melon-plants-by-ultra-high-performance-liquid-chromatography-tandem-mass-spectrometry
#9
Melisa E Yonny, Ariel Rodríguez Torressi, Mónica A Nazareno, Soledad Cerutti
Early production of melon plant (Cucumis melo) is carried out using tunnels structures, where extreme temperatures lead to high reactive oxygen species production and, hence, oxidative stress. Malondialdehyde (MDA) is a recognized biomarker of the advanced oxidative status in a biological system. Thus a reliable, sensitive, simple, selective, and rapid separative strategy based on ultra-high-performance liquid chromatography coupled to positive electrospray-tandem mass spectrometry (UPLC-(+)ESI-MS/MS) was developed for the first time to measure MDA, without derivatization, in leaves of melon plants exposed to stress conditions...
2017: Journal of Analytical Methods in Chemistry
https://www.readbyqxmd.com/read/28202277/sub-lethal-effects-of-a-glyphosate-based-commercial-formulation-and-adjuvants-on-juvenile-oysters-crassostrea-gigas-exposed-for-35days
#10
Alexis Séguin, Antoine Mottier, Carole Perron, Jean Marc Lebel, Antoine Serpentini, Katherine Costil
Glyphosate-based herbicides include active matter and adjuvants (e.g. polyethoxylated tallow amines, POEAs). In addition to a previous investigation on the effect of glyphosate on oysters, the aim of the present study was to investigate the effects of sub-chronic exposures (35days) to three concentrations (0.1, 1 and 100μgL(-1)) of Roundup Express® (REX) and POEAs on oysters belonging to the same age group. Low mortality rates were calculated, and only few significant differences (i.e. shell length) between exposure conditions were observed at a given date...
February 12, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28202252/what-worries-parents-of-a-child-with-autism-evidence-from-a-biomarker-for-chronic-stress
#11
Vicki Bitsika, Christopher F Sharpley, Nicholas M Andronicos, Linda L Agnew
BACKGROUND: Previous studies have reported correlations between various aspects of the behaviour and symptomatology of children with Autism Spectrum Disorder (ASD) and their parents' self-reports of stress via standardised scales. AIMS: To extend that literature, a physiological index of parental chronic stress was used instead of their self-reports-dysregulation of the Diurnal Rhythm (DR) of the Hypothalamic-Pituitary-Adrenal (HPA) axis. METHODS: A sample of 149 parents of a child with ASD provided salivary cortisol at the predicted time of daily maximum cortisol concentration and at a time of daily lower concentration...
February 12, 2017: Research in Developmental Disabilities
https://www.readbyqxmd.com/read/28202240/fatty-acid-profile-of-the-sea-snail-gibbula-umbilicalis-as-a-biomarker-for-coastal-metal-pollution
#12
Carla O Silva, Tiago Simões, Sara C Novais, Inês Pimparel, Luana Granada, Amadeu M V M Soares, Carlos Barata, Marco F L Lemos
Metals are among the most common environmental pollutants with natural or anthropogenic origin that can be easily transferred through the food chain. Marine gastropods are known to accumulate high concentrations of these metals in their tissues. Gibbula umbilicalis ecological importance and abundant soft tissues, which enables extent biochemical assessments, makes this particular organism a potentially suitable species for marine ecotoxicological studies. Fatty acids are carbon-rich compounds that are ubiquitous in all organisms and easy to metabolize...
February 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28202054/increase-of-urinary-malondialdehyde-level-by-bisphenol-a-exposure-a-longitudinal-panel-study
#13
Jin Hee Kim, Yun-Chul Hong
BACKGROUND: To verify oxidative stress as a possible mechanism that establishes a relationship between exposure to bisphenol A (BPA) and adverse health outcomes in the elderly Korean population, we evaluated the relation between visit-to-visit variations in urinary BPA and oxidative stress biomarker. METHODS: To assess the relation between BPA and urinary malondialdehyde (MDA) as an oxidative stress biomarker, we used a mixed effect model after controlling for age, sex, BMI, drinking status, exercise, urinary cotinine level, PM10 on lag day 2, and mean temperature and dew point on the day...
February 15, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28199984/autocrine-and-paracrine-stip1-signaling-promote-osteolytic-bone-metastasis-in-renal-cell-carcinoma
#14
Jiang Wang, Hongbo You, Jun Qi, Caihong Yang, Ye Ren, Hao Cheng
Bone metastases are responsible for some of the most devastating complications of renal cell carcinoma (RCC). However, pro-metastatic factors leading to the highly osteolytic characteristics of RCC bone metastasis have barely been explored. We previously developed novel bone-seeking RCC cell lines by the in vivo selection strategy and performed a comparative proteome analysis on their total cell lysate. Here, we focused on STIP1 (stress-induced phosphoprotein 1), the high up-regulated protein in the bone-seeking cells, and explored its clinical relevance and functions in RCC bone metastasis...
February 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28199857/socioeconomic-status-hair-cortisol-and-internalizing-symptoms-in-parents-and-children
#15
Alexandra Ursache, Emily C Merz, Samantha Melvin, Jerrold Meyer, Kimberly G Noble
Socioeconomic disadvantage is consistently linked with higher risk for internalizing problems, and stress is likely one important mechanism explaining this increased risk. Few studies have examined socioeconomic differences in hair cortisol, a novel biomarker of long-term adrenocortical activity and chronic stress. Moreover, no studies have examined whether differences in hair cortisol might explain socioeconomic disparities in internalizing problems. To address these gaps, we first examined relations of socioeconomic status (SES; family income and parental education) to variation in both parents' and children's hair cortisol concentrations (HCC) and then tested whether HCC and perceptions of stress mediated relations of SES to parents' and children's internalizing symptoms...
January 28, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28198625/curcumin-attenuates-n-nitrosodiethylamine-induced-liver-injury-in-mice-by-utilizing-the-method-of-metabonomics
#16
Peiyu Qiu, Jiachen Sun, Shuli Man, He Yang, Long Ma, Peng Yu, Wenyuan Gao
N-Nitrosodiethylamine (DEN) as one of food additives existed in cheddar cheese, processed meats, beer, water and so forth. It possessed a potent hepatocarcinogen in animals and humans. Curcumin as a natural dietary compound decreased DEN-induced hepatocarcinogenesis in this research. According to the histopathological examination macroof liver tissues, and biomarker detection in serum and livers, it demonstrated that curcumin attenuated DEN-induced hepatocarcinogenesis through parts of regulating the oxidant stress enzymes (T-SOD and CAT), liver function (ALT and AST) and LDHA, AFP level and COX-2/PGE2 pathway...
February 15, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28198206/nitraria-retusa-fruit-prevents-penconazole-induced-kidney-injury-in-adult-rats-through-modulation-of-oxidative-stress-and-histopathological-changes
#17
Mariem Chaâbane, Mohamed Koubaa, Nejla Soudani, Awatef Elwej, Malek Grati, Kamel Jamoussi, Tahia Boudawara, Semia Ellouze Chaabouni, Najiba Zeghal
CONTEXT: Nitraria retusa (Forssk.) Asch. (Nitrariaceae) is a medicinal plant which produces edible fruits whose antioxidant activity has been demonstrated. OBJECTIVE: The current study elucidates the potential protective effect of N. retusa fruit aqueous extract against nephrotoxicity induced by penconazole, a triazole fungicide, in the kidney of adult rats. MATERIALS AND METHODS: Adult Wistar rats were exposed either to penconazole (67 mg/kg body weight), or to N...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28198198/comparative-evaluation-of-pain-stress-neuropeptide-y-acth-and-cortisol-levels-between-a-conventional-postoperative-care-protocol-and-a-fast-track-recovery-program-in-patients-undergoing-major-abdominal-surgery
#18
Maria Kapritsou, Elizabeth D Papathanassoglou, Evangelos Bozas, Dimitrios P Korkolis, Evangelos A Konstantinou, Ioannis Kaklamanos, Margarita Giannakopoulou
BACKGROUND: Fast-track (FT) postoperative protocol in oncological patients after major abdominal surgery reduces complications and length of postoperative stay compared to the conventional (CON) protocol. However, stress and pain responses have not been compared between the two protocols. OBJECTIVES: To compare stress, pain, and related neuropeptidic responses (adrenocorticotropic hormone [ACTH], cortisol, and neuropeptide Y [NPY]) between FT and CON protocols. METHOD: A clinical trial with repeated measurements was conducted (May 2012 to May 2014) with a sample of 63 hepatectomized or pancreatectomized patients randomized into two groups: FT ( n = 29) or CON ( n = 34)...
March 2017: Biological Research for Nursing
https://www.readbyqxmd.com/read/28196874/prospective-evaluation-of-sunitinib-induced-cardiotoxicity-in-patients-with-metastatic-renal-cell-carcinoma
#19
Vivek Narayan, Stephen M Keefe, Naomi Haas, Le Wang, Igor Puzanov, Mary E Putt, Anna Catino, James Fang, Neeraj Agarwal, David Hyman, Amanda M Smith, Brian S Finkelman, Hari K Narayan, Steven Ewer, Chantal ElAmm, Daniel J Lenihan, Bonnie Ky
PURPOSE: To prospectively evaluate cardiotoxicity risk with sunitinib in metastatic renal cell carcinoma (mRCC) routine clinical practice using comprehensive echocardiography and biomarker phenotyping. PATIENTS AND METHODS: In a multi-center prospective study of 90 mRCC patients, echocardiography and biomarkers of cardiovascular injury and stress were quantified at baseline, 3.5, 15, and 33 weeks following sunitinib initiation. These "on-drug" visits corresponded to cycles 1, 3, and 6, respectively...
February 14, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/28196358/wellens-syndrome-a-bad-omen
#20
Madalena Coutinho Cruz, Isabel Luiz, Lurdes Ferreira, Rui Cruz Ferreira
Wellens' syndrome is characterized by an electrocardiographic pattern of T-wave changes associated with a critical stenosis of the left anterior descending artery (LAD), which progresses to an extensive anterior myocardial infarction in the majority of cases. For this reason, its recognition and early treatment are extremely important. We report 2 cases of Wellens' syndrome: an 83-year-old male presenting with ill-characterized chest pain, biphasic T waves in V1-V3 during an asymptomatic period, negative cardiac biomarkers, and a 64% stenosis in LAD with a fractional flow reserve of 0...
February 15, 2017: Cardiology
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