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https://www.readbyqxmd.com/read/28432337/agarose-spot-as-a-comparative-method-for-in-situ-analysis-of-simultaneous-chemotactic-responses-to-multiple-chemokines
#1
Mohaned Ahmed, Haneen A Basheer, Jose M Ayuso, Djevdet Ahmet, Marco Mazzini, Roshan Patel, Steven D Shnyder, Victoria Vinader, Kamyar Afarinkia
We describe a novel protocol to quantitatively and simultaneously compare the chemotactic responses of cells towards different chemokines. In this protocol, droplets of agarose gel containing different chemokines are applied onto the surface of a Petri dish, and then immersed under culture medium in which cells are suspended. As chemokine molecules diffuse away from the spot, a transient chemoattractant gradient is established across the spots. Cells expressing the corresponding cognate chemokine receptors migrate against this gradient by crawling under the agarose spots towards their centre...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428942/follicular-fluid-cerebellin-and-betatrophin-regulate-the-metabolic-functions-of-growing-follicles-in-polycystic-ovary-syndrome
#2
Aynur Adeviye Ersahin, Mustafa Acet, Suat Suphan Ersahin, Tuba Acet, Meltem Yardim, Omer Kenanoglu, Suleyman Aydin
OBJECTIVE: The aim of this study was to assess the changes of follicular fluid (FF) and serum levels of cerebellin precursor protein 1 (cbln1) and betatrophin in patients with polycystic ovary syndrome (PCOS) undergoing in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) with a gonadotropin-releasing hormone (GnRH) antagonist protocol. METHODS: Twenty infertile women with PCOS and 20 control women diagnosed as poor responders undergoing ovarian stimulation with a GnRH antagonist were included...
March 2017: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28425233/comparison-of-the-standard-gnrh-antagonist-protocol-and-the-luteal-phase-estradiol-gnrh-antagonist-priming-protocol-in-poor-ovarian-responders
#3
Mehmet Fırat Mutlu, İlknur Mutlu, Mehmet Erdem, İsmail Güler, Ahmet Erdem
BACKGROUND/AIM: The aim of the study was to compare the luteal estradiol patch/GnRH antagonists priming protocol (LPP) with the standard GnRH antagonist protocol in poor ovarian responders (PORs) in terms of the outcomes of in vitro fertilization (IVF) treatment. MATERIALS AND METHODS: IVF outcomes of 265 cycles in 265 patients (106 in the LPP group, 159 in the standard GnRH antagonist group) were evaluated retrospectively. RESULTS: Mean length of stimulation (11...
April 18, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28420826/efficacy-and-safety-of-an-orally-administered-selective-prostacyclin-receptor-agonist-selexipag-in-japanese-patients-with-pulmonary-arterial-hypertension
#4
Nobuhiro Tanabe, Satoshi Ikeda, Nobuhiro Tahara, Keiichi Fukuda, Masaru Hatano, Hiroshi Ito, Tomotaka Nakayama, Toshihisa Anzai, Akiyoshi Hashimoto, Teruo Inoue, Kouji Kajinami, Yasuki Kihara, Hideyuki Kinoshita, Koichiro Kuwahara, Toyoaki Murohara, Osamu Okazaki, Satoshi Sakai, Toru Satoh, Yutaka Takeda, Yasuchika Takeishi, Mitsugu Taniguchi, Hiroshi Watanabe, Takeshi Yamamoto, Keiko Yamauchi-Takihara, Koichiro Yoshioka, Shigetake Sasayama
BACKGROUND: Selexipag is an orally available prostacyclin receptor (IP receptor) agonist with a non-prostanoid structure. In this open-label Phase II trial, the efficacy and safety of selexipag in Japanese patients with pulmonary arterial hypertension (PAH) is examined.Methods and Results:Selexipag was administered at 200 μg twice daily and titrated up to 1,600 μg by increments of 200 μg in 37 subjects to reach the individual maximum tolerated dose. At 16 weeks, in 33 patients comprising the per-protocol set, the pulmonary vascular resistance (PVR; primary endpoint) decreased from 683...
April 18, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28420172/subtype-diagnosis-of-primary-aldosteronism-is-adrenal-vein-sampling-always-necessary
#5
REVIEW
Fabrizio Buffolo, Silvia Monticone, Tracy A Williams, Denis Rossato, Jacopo Burrello, Martina Tetti, Franco Veglio, Paolo Mulatero
Aldosterone producing adenoma and bilateral adrenal hyperplasia are the two most common subtypes of primary aldosteronism (PA) that require targeted and distinct therapeutic approaches: unilateral adrenalectomy or lifelong medical therapy with mineralocorticoid receptor antagonists. According to the 2016 Endocrine Society Guideline, adrenal venous sampling (AVS) is the gold standard test to distinguish between unilateral and bilateral aldosterone overproduction and therefore, to safely refer patients with PA to surgery...
April 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28416291/cumulative-live-birth-rate-after-gnrh-agonist-trigger-and-elective-cryopreservation-of-all-embryos-in-high-responders
#6
Veljko Vlaisavljević, Borut Kovačič, Jure Knez
Elective embryo cryopreservation after using gonadotrophin-releasing hormone (GnRH) antagonist protocols and GnRH agonist triggering is becoming an increasingly important part of medically assisted reproduction. We designed a single-centre retrospective study to assess the cumulative probability of achieving a live birth through consecutive transfers of vitrified-warmed blastocysts after elective embryo cryopreservation in high-responding patients. Hence, 123 women identified to be at high risk for developing ovarian hyperstimulation syndrome were included...
April 7, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28403961/vascular-endothelial-growth-factor-antagonist-reduces-the-early-onset-and-the-severity-of-ovarian-hyperstimulation-syndrome
#7
S Jellad, A Haj Hassine, M Basly, A Mrabet, M Chibani, R Rachdi
BACKGROUND: Ovarian hyperstimulation syndrome (OHSS) is the most serious complication of controlled ovarian stimulation (COH) during assisted reproductive technology (ART) protocols. This syndrome is a result of ovarian expression of vascular endothelial growth factor (VEGF), which increases vascular permeability. OBJECTIVES: To evaluate the efficiency of prophylactic and therapeutic use of cabergoline in women with higher risk of developing OHSS. MATERIALS AND METHODS: In this prospective randomized study, 146 women undergoing in vitro fertilization (IVF) cycles with GnRH agonist protocols with a higher risk of OHSS diagnosed during the HCG day administration (more than 18 follicles observed larger than 12mm in diameter during COH and/or estradiol levels of 3000-3500pg/ml, previous episodes of OHSS)...
January 2017: J Gynecol Obstet Hum Reprod
https://www.readbyqxmd.com/read/28398368/-the-apulia-hf-multicenter-study-efficacy-of-a-management-protocol-shared-between-hospital-and-territorial-health-services-for-acute-decompensated-heart-failure-patients
#8
Massimo Iacoviello, Sergio Pede, Nadia Aspromonte, Francesca Bux, Mariligia Panunzio, Vittorio Donadeo, Alessandra De Castro, Ettore Antoncecchi, Nicola D'Amato, Elisabetta Squiccimarro, Bartolomeo Silvestri, Lucia Malerba, Luisa De Gennaro, Giuseppe Modugno, Elena Serafini, Biagio Curci, Dario Grande, Furio Colivicchi, Giovanni De Luca, Gianfranco Ignone, Carlo D'Agostino, Pasquale Caldarola
BACKGROUND: The aim of this study was to demonstrate the efficacy of a management model to reduce hospitalizations in patients recently admitted for acute decompensated heart failure. METHODS: The management model was based on a close integration between hospital and territory health services. Clinical evaluation, ECG, echocardiographic findings, total body bioimpedance and brain natriuretic peptide serum levels were used to assess clinical stability of patients at discharge and during follow-up...
February 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/28385352/neurokinin-3-receptor-antagonism-as-a-novel-treatment-for-menopausal-hot-flushes-a-phase-2-randomised-double-blind-placebo-controlled-trial
#9
Julia K Prague, Rachel E Roberts, Alexander N Comninos, Sophie Clarke, Channa N Jayasena, Zachary Nash, Chedie Doyle, Deborah A Papadopoulou, Stephen R Bloom, Pharis Mohideen, Nicholas Panay, Myra S Hunter, Johannes D Veldhuis, Lorraine C Webber, Les Huson, Waljit S Dhillo
BACKGROUND: Hot flushes affect 70% of menopausal women and often severely impact physical, psychosocial, sexual, and overall wellbeing. Hormone replacement therapy is effective but is not without risk. Neurokinin B signalling is increased in menopausal women, and has been implicated as an important mediator of hot flushes. METHODS: This phase 2, randomised, double-blind, placebo-controlled, single-centre, crossover trial assessed the effectiveness of an oral neurokinin 3 receptor antagonist (MLE4901) on menopausal hot flushes...
April 3, 2017: Lancet
https://www.readbyqxmd.com/read/28377212/differentiating-true-androgen-receptor-inhibition-from-cytotoxicity-mediated-reduction-of-reporter-gene-transactivation-in-vitro
#10
Maricel Marin-Kuan, Karma C Fussell, Nicolas Riederer, Helia Latado, Patrick Serrant, Julie Mollergues, Myriam Coulet, Benoit Schilter
In vitro effect-based reporter assays are applied as biodetection tools designed to address nuclear receptor mediated-modulation. While such assays detect receptor modulating potential, cell viability needs to be addressed, preferably in the same well. Some assays circumvent this by co-transfecting a second constitutively-expressed marker gene or by multiplexing a cytotoxicity assay. Some assays, such as the CALUX®, lack this feature. The cytotoxic effects of unknown substances can confound in vitro assays, making the interpretation of results difficult and uncertain, particularly when assessing antagonistic activity...
April 1, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28375549/homology-based-modeling-of-rhodopsin-like-family-members-in-the-inactive-state-structural-analysis-and-deduction-of-tips-for-modeling-and-optimization
#11
Matteo Pappalardo, Mahmoud Rayan, Saleh Abu-Lafi, Martha E Leonardi, Danilo Milardi, Salvatore Guccione, Anwar Rayan
Modeling G-Protein Coupled Receptors (GPCRs) is an emergent field of research, since utility of high-quality models in receptor structure-based strategies might facilitate the discovery of interesting drug candidates. The findings from a quantitative analysis of eighteen resolved structures of rhodopsin family "A" receptors crystallized with antagonists and 153 pairs of structures are described. A strategy termed endeca-amino acids fragmentation was used to analyze the structures models aiming to detect the relationship between sequence identity and Root Mean Square Deviation (RMSD) at each trans-membrane-domain...
April 4, 2017: Molecular Informatics
https://www.readbyqxmd.com/read/28374539/comparative-assessment-of-the-thermal-tolerance-of-spotted-stemborer-chilo-partellus-lepidoptera-crambidae-and-its-larval-parasitoid-cotesia-sesamiae-hymenoptera-braconidae
#12
Reyard Mutamiswa, Frank Chidawanyika, Casper Nyamukondiwa
Under stressful thermal environments, insects adjust their behaviour and physiology to maintain key life-history activities and improve survival. For interacting species, mutual or antagonistic, thermal stress may affect the partcipants in differing ways, which may then affect the outcome of the ecological relationship. In agroecosystems, this may be the fate of relationships between insect pests and their antagonistic parasitoids under acute and chronic thermal variability. Against this background, we investigated the thermal tolerance of different developmental stages of Chilo partellus Swinhoe (Lepidoptera: Crambidae) and its larval parasitoid, Cotesia sesamiae Cameron (Hymenoptera: Braconidae) using both dynamic and static protocols...
April 4, 2017: Insect Science
https://www.readbyqxmd.com/read/28368802/-poor-responders-how-could-we-improve-our-results
#13
M Duport Percier, T Anahory, N Ranisavljevic, S Bringer-Deutsch
OBJECTIVES: Finding an efficient treatment for poor responders still poses a tremendous challenge for assisted reproductive technology. In 2011, an international consensus has been reached in Bologna on how to standardize the definition of poor ovarian response (POR) in a simple and reproducible manner. This article provides an objective assessment of the different treatment options currently available. METHODS: A search of the database PUBMED was carried out for studies published in English between October 2000 and April 2016...
February 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28367298/the-effect-of-coasting-on-intracytoplasmic-sperm-injection-outcome-in-antagonist-and-agonist-cycle
#14
Z Candan İltemir Duvan, Müberra Namlı Kalem, Yuksel Onaran, Esra Aktepe Keskin, Aylin Ayrım, Aslıhan Pekel, Hasan Kafalı, Nilgün Turhan
BACKGROUND: Coasting can reduce the ovarian hyperstimulation syndrome (OHSS) risk in ovulation induction cycles before intracytoplasmic sperm injection (ICSI). This study aimed to investigate the effect of gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist protocols to controlled ovarian hyperstimulation (COH) cycles with coasting on the parameters of ICSI cycles and the outcome. MATERIALS AND METHODS: In a retrospective cohort study, 117 ICSI cycles were per- formed and coasting was applied due to hyperresponse, between 2006 and 2011...
April 2017: International Journal of Fertility & Sterility
https://www.readbyqxmd.com/read/28364693/the-%C3%AF-1-receptor-agonist-pentazocine-increases-store-operated-ca-2-entry-in-mcf7%C3%AF-1-and-sk-n-sh-cell-lines
#15
Giuseppe Gasparre, Carmen Abate, Roberto Carlucci, Francesco Berardi, Giuseppe Cassano
BACKGROUND: The intracellular [Ca(2+)] is modulated by σ receptors. An important component of the cellular machinery governing the intracellular [Ca(2+)] is Store-Operated Calcium Entry (SOCE). Here we want to investigate whether ligands of σ receptors affect SOCE. METHODS: The intracellular [Ca(2+)] was monitored, with the fluorescent Ca(2+)-sensitive probe Fura-2, in four cell lines with a different expression of σ receptors, namely MCF7 (expressing σ1 receptors with a low density and overexpressing σ2 receptors), MCF7σ1 (overexpressing σ1 receptors), SK-N-SH, and HT-29...
January 28, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28364596/cardioprotective-effects-of-calcitonin-gene-related-peptide-in-isolated-rat-heart-and-in-h9c2-cells-via-redox-signaling
#16
Francesca Tullio, Claudia Penna, Karine Cabiale, Saveria Femminò, Marco Galloni, Pasquale Pagliaro
The calcitonin-gene-related-peptide (CGRP) release is coupled to the signaling of Angeli's salt in determining vasodilator effects. However, it is unknown whether CGRP is involved in Angeli's salt cardioprotective effects and which are the mechanisms of protection. We aimed to determine whether CGRP is involved in myocardial protection induced by Angeli's salt. We also analyzed the intracellular signaling pathway activated by CGRP. Isolated rat hearts were pre-treated with Angeli's salt or Angeli's salt plus CGRP8-37, a specific CGRP-receptor antagonist, and subjected to ischemia (30-min) and reperfusion (120-min)...
March 29, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28362681/dual-ovarian-stimulation-and-random-start-in-assisted-reproductive-technologies-from-ovarian-biology-to-clinical-application
#17
Alberto Vaiarelli, Roberta Venturella, Damiano Vizziello, Francesco Bulletti, Filippo M Ubaldi
PURPOSE OF REVIEW: The opportunity to use gonadotropins to stimulate the growth of antral follicles coming from different follicular waves available in different moment of the menstrual cycle allowed the implementation of innovative protocols in assisted reproductive technologies. The purpose of this review is to explore the possible advantages related to these new controlled ovarian stimulation (COS) strategies. RECENT FINDINGS: Women exhibit major and minor wave patterns of ovarian follicular development during the menstrual cycle, as it is in animal species...
March 30, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28358705/mild-versus-conventional-ovarian-stimulation-for-poor-responders-undergoing-ivf-icsi
#18
Charalampos Siristatidis, George Salamalekis, Konstantinos Dafopoulos, George Basios, Paraskevi Vogiatzi, Nikolaos Papantoniou
BACKGROUND/AIM: Mild stimulation protocols have been implemented to be offered to subfertile patients who respond poorly to ovarian stimulation. We aimed to compare the efficacy of mild versus conventional gonadotropin-releasing hormone (GnRH)-agonist and antagonist protocols in poor responders undergoing in vitro fertilization/intra-cytoplasmic sperm injection (IVF/ICSI) cycles. PATIENTS AND METHODS: A total of 58 poorly-responding patients were divided into two groups: mild group (n=33), receiving clomiphene citrate 100 mg and 0...
March 2017: In Vivo
https://www.readbyqxmd.com/read/28353246/mk-801-treated-oligodendrocytes-as-a-cellular-model-to-study-schizophrenia
#19
Caroline Brandão-Teles, Daniel Martins-de-Souza, Paul C Guest, Juliana S Cassoli
Glutamate is the most important excitatory neurotransmitter in the brain. The N-methyl-D-aspartate (NMDA) subtype of glutamate receptor is found both in neurons and glial cells such as oligodendrocytes, which have been shown to be dysfunctional in schizophrenia. For this reasons, the oligodendrocyte MO3.13 cell line has been used to study glutamatergic dysfunction as a model of schizophrenia using the NMDA receptor antagonists such as MK-801 to block receptor function. Here, we describe a comprehensive protocol for culturing and carrying out proteomic analyses of MK-801-treated MO3...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28353244/generation-of-the-acute-phencyclidine-rat-model-for-proteomic-studies-of-schizophrenia
#20
Dan Ma, Paul C Guest
Administration of the non-competitive N-methyl-D-aspartate (NMDA) receptor antagonist phencyclidine (PCP) to rodents has been used as the gold standard preclinical model for schizophrenia. PCP treatment induces hyperlocomotion and stereotypic behaviour, which resemble the positive symptoms of schizophrenia. In addition, proteomic studies have identified changes in proteins associated with energy metabolism and neurotransmission which are typical hallmarks of the disease. This chapter presents a protocol for the generation of this model, behavioural assessment and preparation of key bio-samples to provide the raw materials for proteomic analyses...
2017: Advances in Experimental Medicine and Biology
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