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https://www.readbyqxmd.com/read/29332796/direct-olive-oil-analysis-by-mass-spectrometry-a-comparison-of-different-ambient-ionization-methods
#1
Felipe J Lara-Ortega, Miriam Beneito-Cambra, José Robles-Molina, Juan F García-Reyes, Bienvenida Gilbert-López, Antonio Molina-Díaz
Analytical methods based on ambient ionization mass spectrometry (AIMS) combine the classic outstanding performance of mass spectrometry in terms of sensitivity and selectivity along with convenient features related to the lack of sample workup required. In this work, the performance of different mass spectrometry-based methods has been assessed for the direct analyses of virgin olive oil for quality purposes. Two sets of experiments have been setup: (1) direct analysis of untreated olive oil using AIMS methods such as Low-Temperature Plasma Mass Spectrometry (LTP-MS) or paper spray mass spectrometry (PS-MS); or alternatively (2) the use of atmospheric pressure ionization (API) mass spectrometry by direct infusion of a diluted sample through either atmospheric pressure chemical ionization (APCI) or electrospray (ESI) ionization sources...
April 1, 2018: Talanta
https://www.readbyqxmd.com/read/29331038/modeling-strategic-sperm-allocation-tailoring-the-predictions-to-the-species
#2
Biz R Turnell, Kerry L Shaw, H Kern Reeve
Two major challenges exist when empirically testing the predictions of sperm allocation theory. First, the study species must adhere to the assumptions of the model being tested. Unfortunately, the common assumption of sperm allocation models that females mate a maximum of once or twice does not hold for many, if not most, multiply and sequentially mating animals. Second, a model's parameters, which dictate its predictions, must be measured in the study species. Common examples of such parameters, female mating frequency and sperm precedence patterns, are unknown for many species used in empirical tests...
January 13, 2018: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/29325151/the-making-of-virgin-fruit-the-molecular-and-genetic-basis-of-parthenocarpy
#3
Dirk Joldersma, Zhongchi Liu
Fruit set-the commitment of an angiosperm plant to develop fruit-is a key developmental process that normally occurs following successful fertilization. Parthenocarpy arises when fruit automatically develop in the absence of fertilization. This review uses parthenocarpic fruit development as a focal device through which to recapitulate and understand the molecular effectors that mediate and regulate fruit set. The review demonstrates that studies of parthenocarpy are providing vital insight into plant development, signaling and, potentially, high-value agricultural products...
January 10, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29322214/protective-role-of-nrf2-against-mechanical-stretch-induced-apoptosis-in-mouse-fibroblasts-a-potential-therapeutic-target-of-mechanical-trauma-induced-stress-urinary-incontinence
#4
Qiannan Li, Bingshu Li, Cheng Liu, Linlin Wang, Jianming Tang, Li Hong
INTRODUCTION AND HYPOTHESIS: We investigated the protective effect and underlying molecular mechanism of nuclear factor-E2-related factor 2 (Nrf2) against mechanical-stretch-induced apoptosis in mouse fibroblasts. METHODS: Normal cells, Nrf2 silencing cells, and Nrf2 overexpressing cells were respectively divided into two groups-nonintervention and cyclic mechanical strain (CMS)-subjected to CMS of 5333 μ (1.0 Hz for 4 h), six groups in total (control, CMS, shNfe212, shNfe212 + CMS, LV-shNfe212, and LV-shNfe212 + CMS)...
January 10, 2018: International Urogynecology Journal
https://www.readbyqxmd.com/read/29321876/effects-of-social-information-on-life-history-and-mating-tactics-of-males-in-the-orb-web-spider-argiope-bruennichi
#5
Anna-Lena Cory, Jutta M Schneider
Informed mating decisions are often based on social cues providing information about prospective mating opportunities. Social information early in life can trigger developmental modifications and influence later mating decisions. A high adaptive value of such adjustments is particularly obvious in systems where potential mating rates are extremely limited and have to be carried out in a short time window. Males of the sexually cannibalistic spider Argiope bruennichi can achieve maximally two copulations which they can use for one (monogyny) or two females (bigyny)...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29321175/upregulation-of-gh-but-not-igf1-in-the-hippocampus-of-the-lactating-dam-after-kainic-acid-injury
#6
Elvira C Arellanes-Licea, Jose Avila-Mendoza, Elizabeth C Ramirez-Martinez, Eugenia Ramos, Nancy Uribe-Gonzalez, Carlos Aramburo, Teresa Morales, Maricela Luna
Lactation embodies a natural model of morphological, neurochemical, and functional brain plasticity. In this reproductive stage, the hippocampus of the female is less sensitive to excitotoxins in contrast to nulliparity. Growth hormone (GH) and insulin-like growth factor 1 (IGF1) are known to be neuroprotective in several experimental models of brain lesion. Here, activation of the GH-IGF1 pituitary-brain axis following kainic acid (7.5 mg/kg ip KA) lesion was studied in lactating and nulliparous rats. Serum concentrations of GH and IGF1 were uncoupled in lactation...
January 10, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29316532/developing-new-adsorptive-membrane-by-modification-of-support-layer-with-iron-oxide-microspheres-for-arsenic-removal
#7
Xuan Zhang, Xiaofeng Fang, Jiansheng Li, Shunlong Pan, Xiuyun Sun, Jinyou Shen, Weiqing Han, Lianjun Wang, Shuaifei Zhao
Arsenic-contaminated water has significant adverse impacts on human health and ecosystems. We developed a new adsorptive membrane by modifying the porous support layer of a phase inversion formed membrane for arsenic removal. Iron oxide (Fe3O4) microspheres were immobilized in the support layer of the membrane by reverse filtration, followed by dopamine polymerization. The prepared adsorptive membrane was compared with a virgin membrane without Fe3O4 microspheres and a Fe3O4 blended membrane in terms of membrane structures and separation performance...
January 3, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29304744/a-randomised-controlled-intervention-study-investigating-the-efficacy-of-carotenoid-rich-fruits-and-vegetables-and-extra-virgin-olive-oil-on-attenuating-sarcopenic-symptomology-in-overweight-and-obese-older-adults-during-energy-intake-restriction-protocol-paper
#8
Anthony Villani, Hattie Wright, Gary Slater, Jonathan Buckley
BACKGROUND: Weight loss interventions have not been advocated for overweight/obese older adults due to potential loss of skeletal muscle and strength impacting on physical function with potential loss of independence. Carotenoids and polyphenols are inversely associated with sarcopenic symptomology. This paper reports the protocol of a study evaluating the efficacy of a high-protein, energy restricted diet rich in carotenoids and polyphenols on body composition, muscle strength, physical performance and quality of life in overweight and obese older adults...
January 5, 2018: BMC Geriatrics
https://www.readbyqxmd.com/read/29298888/rapid-cloning-of-novel-rhesus-adenoviral-vaccine-vectors
#9
Peter Abbink, Marinela Kirilova, Michael Boyd, Noe Mercado, Zhenfeng Li, Ramya Nityanandam, Ovini Nanayakkara, Rebecca Peterson, Rafael A Larocca, Malika Aid, Lawrence Tartaglia, Tinaye Mutetwa, Eryn Blass, David Jetton, Lori F Maxfield, Erica N Borducchi, Alexander Badamchi-Zadeh, Scott Handley, Guoyan Zhao, Herbert W Virgin, Menzo J Havenga, Dan H Barouch
Human and chimpanzee adenovirus vectors are being developed to circumvent pre-existing antibodies against common adenovirus vectors such as Ad5. However, baseline immunity to these vectors still exists in human populations. Traditional cloning of new adenovirus vaccine vectors is a long and cumbersome process that takes two months or more and that requires rare unique restriction enzyme sites. Here we describe a novel, restriction enzyme-independent method for rapid cloning of new adenovirus vaccine vectors that reduces the total cloning procedure to 1 week...
January 3, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29296049/hysterectomy-and-ovarian-cystectomy-using-natural-orifice-transluminal-endoscopic-surgery-an-initial-experience-at-tzu-chi-general-hospital
#10
Dah-Ching Ding, Tang-Yuan Chu, Mun-Kun Hong
Objectives: The objective of this study is to report our initial experience with patients undergoing transvaginal natural orifice transluminal endoscopic surgery (NOTES). Materials and Methods: From September 2016 to December 2016, patients who were not virgins and did not have pelvic inflammation or obliteration of the cul-de-sac who underwent NOTES hysterectomy or ovarian cystectomy (OC) were included in the study. Results: Transvaginal NOTES was performed smoothly in six patients, two patients (mean age 35 years, mean body mass index [BMI] 25) received an OC and four patients (mean age 49 years, mean BMI 27) underwent a hysterectomy...
October 2017: Ci Ji Yi Xue za Zhi, Tzu-chi Medical Journal
https://www.readbyqxmd.com/read/29295516/impact-of-consuming-extra-virgin-olive-oil-or-nuts-within-a-mediterranean-diet-on-dna-methylation-in-peripheral-white-blood-cells-within-the-predimed-navarra-randomized-controlled-trial-a-role-for-dietary-lipids
#11
Ana Arpón, Fermín I Milagro, Cristina Razquin, Dolores Corella, Ramón Estruch, Montserrat Fitó, Amelia Marti, Miguel A Martínez-González, Emilio Ros, Jordi Salas-Salvadó, José-Ignacio Riezu-Boj, J Alfredo Martínez
DNA methylation could be reversible and mouldable by environmental factors, such as dietary exposures. The objective was to analyse whether an intervention with two Mediterranean diets, one rich in extra-virgin olive oil (MedDiet + EVOO) and the other one in nuts (MedDiet + nuts), was influencing the methylation status of peripheral white blood cells (PWBCs) genes. A subset of 36 representative individuals were selected within the PREvención con DIeta MEDiterránea (PREDIMED-Navarra) trial, with three intervention groups in high cardiovascular risk volunteers: MedDiet + EVOO, MedDiet + nuts, and a low-fat control group...
December 23, 2017: Nutrients
https://www.readbyqxmd.com/read/29291078/the-timing-of-female-genital-mutilation-and-the-role-of-contralateral-palpal-insertions-in-the-spider-cyclosa-argenteoalba
#12
Kensuke Nakata
Some male spiders exhibit female genital mutilation behaviour (FGM) by removing the female genital appendage (scape) to control the mating frequency of females. Female spiders have two, i.e. right and left, genital openings connected with separate spermathecae into which males transfer sperm successively using one pedipalp (secondary genitalia) at a time. Thus, males must complete at least two palpal insertions to fill both spermathecae, before FGM. The present study examined whether (i) scape removal is only associated with the second palpal insertion (one-action hypothesis) or (ii) two contralateral palpal insertions facilitate FGM, with each insertion cutting the basal part of the scape halfway (two-actions hypothesis)...
November 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29290188/the-potential-therapeutic-role-of-peroxisome-proliferatoractivated-receptors-agonist-in-preeclamptic-pregnant-rats
#13
Hayam Ibrahim Gad Allam, Abeer AbdulMoati Al Masri
OBJECTIVE: To investigate the role of peroxisome proliferator-activated receptor (PPAR)-γ agonist on renal functions and blood levels of vasoregulatory peptides by administering rosiglitazone-a PPAR-γ agonist- to nitric oxide (NO) synthase lacking pregnant rats as a creature model of preeclampsia. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Medical College at King Khaled University Hospital, Riyadh, Saudi Arabia, from July 2016 to May 2017...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29287788/timeless2-plays-an-important-role-in-reproduction-and-circadian-rhythms-in-the-cricket-gryllus-bimaculatus
#14
Motoki Nose, Atsushi Tokuoka, Tetsuya Bando, Kenji Tomioka
The timeless2 (tim2) gene is an insect orthologue of the mammalian clock gene Timeless (mTim). Although its functional role has been extensively studied in mammals, little is known regarding its role in insects. In the present study, we obtained tim2 cDNA (Gb'tim2) from the cricket Gryllus bimaculatus and characterized its functional role in embryonic development, egg production, and circadian rhythms. Gb'tim2 gave rise to a 1432 amino acid protein, and showed approximately 65% homology to that of Drosophila melanogaster...
December 26, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/29287327/study-of-the-combined-effects-of-ripeness-and-production-area-on-bosana-oil-s-quality
#15
Lucia Morrone, Luisa Neri, Claudio Cantini, Barbara Alfei, Annalisa Rotondi
The effects of olive ripeness, areas of production and their interaction on the chemical and sensory characteristics of cv. Bosana oil were assessed. The study was carried out in three areas of the Sassari province, Sardinia (Italy), at three stages of maturation. The results indicated the independence of the two factors: ripeness influenced saturated fatty acids, pigment content and deacetoxy oleuropein aglycone (DAOA) content and didn't affect the sensory characteristics, while production area influenced unsaturated fatty acids, content of vanillic acid and some sensory characters...
April 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29283995/protection-by-extra-virgin-olive-oil-against-oxidative-stress-in-vitro-and-in-vivo-chemical-and-biological-studies-on-the-health-benefits-due-to-a-major-component-of-the-mediterranean-diet
#16
Miriam Rossi, Francesco Caruso, Lorraine Kwok, Grace Lee, Alessio Caruso, Fabio Gionfra, Elena Candelotti, Stuart L Belli, Nora Molasky, Kathleen M Raley-Susman, Stefano Leone, Tomáš Filipský, Daniela Tofani, Jens Pedersen, Sandra Incerpi
We report the results of in vivo studies in Caenorhabditis elegans nematodes in which addition of extra virgin olive oil (EVOO) to their diet significantly increased their life span with respect to the control group. Furthermore, when nematodes were exposed to the pesticide paraquat, they started to die after two days, but after the addition of EVOO to their diet, both survival percentage and lifespans of paraquat-exposed nematodes increased. Since paraquat is associated with superoxide radical production, a test for scavenging this radical was performed using cyclovoltammetry and the EVOO efficiently scavenged the superoxide...
2017: PloS One
https://www.readbyqxmd.com/read/29282125/food-restriction-during-pregnancy-and-female-offspring-fertility-adverse-effects-of-reprogrammed-reproductive-lifespan
#17
Abdel Halim Harrath, Abdulkarem Alrezaki, Lamjed Mansour, Saleh H Alwasel, Stefano Palomba
BACKGROUND: Food restriction during pregnancy can influence the health of the offspring during the adulthood. The aim of the present study was to examine the effect of maternal food restriction (MFR) on the reproductive performance in female rat offspring from the first (FR1) and second (FR2) generations. METHODS: Adult virgin Wistar female rats were given free access to tap water and were fed ad libitum on standard rodent chow, were mated with virgin adult males, and then were randomly divided into two groups: controls (that was fed ad libitum ) and food-restricted group (FR, that was given only 50% of ad libitum food throughout gestation)...
December 28, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/29279744/postoperative-spinal-epidural-hematoma-the-danger-caused-by-the-misuse-of-thrombin-containing-local-hemostatics
#18
Dong Ki Ahn, Won Shik Shin, Go We Kim, Ki Hyuk Koo
Study Design: Retrospective case-control study. Purpose: To examine the hypothesis that the misuse of thrombin-containing local hemostatics (TCLH) increases the risk of postoperative spinal epidural hematoma (POSEH). Overview of Literature: Many studies have focused on hypocoagulability as a risk factor for POSEH. However, there are no prior reports on the increased risk of POSEH in hypercoagulable states. Methods: Posterior instrumented lumbar spine surgery cases over 2 consecutive years were divided into two groups: a study group (98 patients in whom TCLH was used) and a control group (176 patients in whom TCLH was not used)...
December 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/29279006/between-living-well-and-dying-well-existential-ambivalence-and-keeping-promises-alive
#19
Devin Flaherty
I explore the complexities of moral experience during the phase of life after a terminal diagnosis by examining the experiences of one woman living as a hospice patient in St. Croix, U.S. Virgin Islands. Introducing the notion of "existential ambivalence," I show that this can be a period of deep uncertainty, in which what matters to individuals can shift and fluctuate through time, not necessarily lining up with collective ideals of "the good death." I focus on a promise this woman made that continued to pull her toward a version of living well while she was also pulled toward dying...
December 26, 2017: Death Studies
https://www.readbyqxmd.com/read/29277918/extra-virgin-olive-oil-aroma-release-after-interaction-with-human-saliva-from-individuals-with-different-body-mass-index
#20
Alessandro Genovese, Tiziana Rispoli, Raffaele Sacchi
BACKGROUND: The interindividual variability, observed in saliva characteristics, raises the question of its relationship with variability in fat sensory perception, particularly in aroma compounds. In this study, in order to measure the aroma release from different individuals, eleven key aroma compounds of extra virgin olive oil (EVOO) were monitored and quantified in dynamic headspace after an in-vitro interaction between EVOO and human saliva. Therefore, sixty individuals among normal weight (NW), overweight (OW), and obese (O) were studied...
December 25, 2017: Journal of the Science of Food and Agriculture
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