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https://www.readbyqxmd.com/read/28741297/maldi-ft-icr-ms-for-archaeological-lipid-residue-analysis
#1
Ester Oras, Signe Vahur, Sven Isaksson, Ivari Kaljurand, Ivo Leito
Soft-ionization methods are currently at the forefront of developing novel methods for analysing degraded archaeological organic residues. Here we present little-used soft ionisation method of matrix assisted laser desorption/ionization - Fourier transform - ion cyclotron resonance - mass spectrometry (MALDI-FT-ICR-MS) for the identification of archaeological lipid residues. It is a high-resolution and sensitive method with low limits of detection capable of identifying lipid compounds in small concentrations, thus providing a highly potential new technique for the analysis of degraded lipid components...
July 24, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28737707/an-appropriate-modulation-of-lymphoproliferative-response-and-cytokine-release-as-possible-contributors-to-longevity
#2
Irene Martínez de Toda, Carmen Vida, Mónica De la Fuente
The decrease in the proliferative response of lymphocytes is one of the most evident among the age-related changes of the immune system. This has been linked to a higher risk of mortality in both humans and experimental animals. However, long-lived individuals, in spite of optimally maintaining most of the functions of the immune system, also seem to show an impaired proliferative response. Thus, it was hypothesized that these individuals may have distinct evolution times in this proliferation and a different modulatory capacity through their cytokine release profiles...
July 24, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28735674/effect-of-mouse-strain-on-equine-herpesvirus-9-infection
#3
E El-Nahass, N El-Habashi, Kh M El-Dakhly, Y Tsuchiya, T Yanai
The infectivity of equine herpesvirus (EHV)-9 has been studied in different animal models including immunocompromised animals. The current study focused on the infectivity of EHV-9 in different mouse strains (C3H, C57BL, DBA, BALB/c-nu/nu, BALB/c and ICR) by intranasal inoculation of 2 × 10(6) plaque forming units (PFU). Various organs, including head and lungs, were collected 7 days post infection (dpi) to investigate microscopical lesions and the distribution of EHV-9 antigen. Immunopositivity of tissue sections was scored using ImageJ software...
July 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28735033/nf-%C3%AE%C2%BAb-vimentin-is-involved-in-steroidogenesis-stimulated-by-mono-butyl-phthalate-in-primary-cultured-ovarian-granulosa-cells
#4
Chang Zhang, Pan Gong, Yan Ye, Lulu Zhang, Minjian Chen, Yanhui Hu, Aihua Gu, Shanshan Chen, Yubang Wang
Di-n-butyl phthalate (DBP) and its active metabolite, monobutyl phthalate (MBP) are the most common endocrine disrupting chemicals. Many studies indicated the effects of MBP on male steroidogenesis, however, little attention have been paid on the effects of low levels of MBP on female steroidogenesis. This study was aimed to assess steroidogenesis stimulated by low-dose MBP on primary cultured ovarian granulosa cells (mGCs). Ovarian granulosa cells were isolated from ICR female mice. Hormone levels in medium were detected by ELISA, mRNA and protein expressions of vimentin, NF-κB p65 and phosphorylation of NF-κB p65 (p-p65) were assayed by qRT-PCR, western blot and immunohistochemistry, respectively...
July 19, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28734648/minimally-invasive-treatment-of-class-4-invasive-cervical-resorption-with-internal-approach-a%C3%A2-case-series
#5
Avi Shemesh, Joe Ben Itzhak, Michael Solomonov
Invasive cervical resorption (ICR) is a type of external resorption that can involve the coronal, middle, and apical parts of the root in its advanced stages. The diagnosis and treatment of ICR depend on the extent of the resorption into the dentin. The treatment of advanced ICR is challenging, and these teeth have poor prognoses. This article describes 4 cases of class 4 ICR diagnosed by using cone-beam computed tomography and treated with a minimally invasive internal approach with sodium hypochlorite irrigation and calcium hydroxide dressing...
July 19, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28733903/the-effect-of-aspartate-supplementation-on-the-microbial-composition-and-innate-immunity-on-mice
#6
Peng Bin, Shaojuan Liu, Shuai Chen, Zhaoying Zeng, Ruilin Huang, Yulong Yin, Gang Liu
The study was conducted to investigate the changes of intestinal microbiota composition and innate immunity with different dietary dosages of aspartate (Asp) supplementation. Thirty-six female ICR mice were divided randomly to four groups and thereafter fed the basal diets (controls) or those supplemented with additional 0.5, 1.0 and 2.0% aspartate. After 2 week feeding, microbial composition in ileum and feces, gene expression of pro-inflammatory cytokine, and innate immune factors in ileum were determined...
July 21, 2017: Amino Acids
https://www.readbyqxmd.com/read/28730733/the-potential-impact-of-radix-paeoniae-alba-in-embryonic-development-of-mice
#7
Wei Xu, Ling Xu, Bin Deng, Jing Leng, Nong Tang, Li Chun Zhao, Hong Hai Zhou, Zhong Zhen Zhao, Zhi Jun Yang, Ting Ting Xiao, Xiao Ying Tian, Alan H M Ho, Nickie W K Chan, Yeuk Lung Chow, Chi Yi Chow, Min Xu
Although Radix Paeoniae Alba (RPA) has been ranked as one of the top 6 herbs used frequently to prevent and treat miscarriages clinically, there is no clear evidence regarding its safety in embryonic development. This study aims to evaluate the potential impacts of RPA on embryonic stem cells (ESCs) and pregnant mice. Cytotoxicity assays of the extract were performed in ESCs and 3T3 cells. Pregnant ICR mice were orally treated with RPA extracts at dosages of 0 (G1 group as negative controls), 2, 8 and 32 g/kg/day (G2, G3 and G4 groups) respectively from the gestation day (Gd) 6-15...
July 21, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28728656/the-prognostic-effects-of-coronary-disease-severity-and-completeness-of-revascularization-on-mortality-in-patients-undergoing-transcatheter-aortic-valve-replacement
#8
Guy Witberg, Ehud Regev, Shmuel Chen, Abbid Assali, Israel M Barbash, David Planer, Hana Vaknin-Assa, Victor Guetta, Vojislav Vukasinovic, Katia Orvin, Haim D Danenberg, Amit Segev, Ran Kornowski
OBJECTIVES: The study sought to examine the effect of coronary artery disease (CAD) on mortality in patients undergoing transcatheter aortic valve replacement (TAVR). BACKGROUND: CAD is common in the TAVR population. However, there are conflicting data on the prognostic significance of CAD and its treatment in this population. METHODS: The authors analyzed 1,270 consecutive patients with severe aortic stenosis (AS) undergoing TAVR at 3 Israeli centers...
July 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28728562/low-oxygen-tension-increases-mitochondrial-membrane-potential-and-enhances-expression-of-antioxidant-genes-and-implantation-protein-of-mouse-blastocyst-cultured-in-vitro
#9
Yun-Yi Ma, Huei-Wen Chen, Chii-Ruey Tzeng
BACKGROUND: In human IVF, embryos cultured with a lower O2 tension (5%) can give rise to higher success rates when compared with normoxic conditions (20%). However, the mechanisms behind the beneficial effects of reduced oxygen tension in embryogenesis remain unclear. The aim of this study was to evaluate the expression of oxygen related and antioxidant genes and mitochondrial function in mouse embryo cultured under hypoxic and normoxic conditions, to investigate the beneficial effect of low oxygen tension in preimplantation embryogenesis...
July 20, 2017: Journal of Ovarian Research
https://www.readbyqxmd.com/read/28726567/possible-mechanisms-involved-in-the-anti-nociceptive-effects-of-hydro-ethanolic-leaf-extract-of-ziziphus-abyssinica
#10
Eric Boakye-Gyasi, Isaac Tabiri Henneh, Wonder Kofi Mensah Abotsi, Elvis Ofori Ameyaw, Eric Woode
CONTEXT: Various parts of Ziziphus abyssinica Hochst ex. A. Rich (Rhamnaceae) have been used in Ghanaian and African traditional medicine as an analgesic. However, there are little scientific data to support the anti-nociceptive effects of the hydro-ethanolic leaf extract of Ziziphus abyssinica (EthE) as well as the possible mechanisms involved in its anti-nociceptive effects. PURPOSE: To predict possible nociceptive pathways involved in the anti-nociceptive effects of EthE...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28722812/chemical-profile-of-pineapple-cv-vit%C3%A3-ria-in-different-maturation-stages-using-electrospray-ionization-mass-spectrometry
#11
Elizângela M Ogawa, Helber B Costa, José A Ventura, Luiz C S Caetano, Fernanda E Pinto, Bruno G Oliveira, Maria Eduarda S Barroso, Rodrigo Scherer, Denise C Endringer, Wanderson Romão
BACKGROUND: Pineapple is the fruit of Ananas comosus var. comosus plant, being cultivated in tropical areas and has high energy content and nutritional value. Herein, 30 samples of pineapple cv. Vitória were analyzed as a function of the maturation stage (0-5) and their physicochemical parameters monitored. Besides, negative-ion mode electrospray ionization mass spectrometry (ESI(-)FT-ICR MS) was used to identify and semi-quantify primary and secondary metabolites present in the crude and phenolic extracts of pineapple, respectively...
July 19, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28721671/front-end-electron-transfer-dissociation-coupled-to-a-21-tesla-ft-icr-mass-spectrometer-for-intact-protein-sequence-analysis
#12
Chad R Weisbrod, Nathan K Kaiser, John E P Syka, Lee Early, Christopher Mullen, Jean-Jacques Dunyach, A Michelle English, Lissa C Anderson, Greg T Blakney, Jeffrey Shabanowitz, Christopher L Hendrickson, Alan G Marshall, Donald F Hunt
High resolution mass spectrometry is a key technology for in-depth protein characterization. High-field Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) enables high-level interrogation of intact proteins in the most detail to date. However, an appropriate complement of fragmentation technologies must be paired with FTMS to provide comprehensive sequence coverage, as well as characterization of sequence variants, and post-translational modifications. Here we describe the integration of front-end electron transfer dissociation (FETD) with a custom-built 21 tesla FT-ICR mass spectrometer, which yields unprecedented sequence coverage for proteins ranging from 2...
July 18, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28719950/isolation-and-characterization-of-vaccine-candidate-genes-including-csp-and-msp1-in-plasmodium-yoelii
#13
Seon-Hee Kim, Young-An Bae, Ju-Young Seoh, Hyun-Jong Yang
Malaria is an infectious disease affecting humans, which is transmitted by the bite of Anopheles mosquitoes harboring sporozoites of parasitic protozoans belonging to the genus Plasmodium. Despite past achievements to control the protozoan disease, malaria still remains a significant health threat up to now. In this study, we cloned and characterized the full-unit Plasmodium yoelii genes encoding merozoite surface protein 1 (MSP1), circumsporozoite protein (CSP), and Duffy-binding protein (DBP), each of which can be applied for investigations to obtain potent protective vaccines in the rodent malaria model, due to their specific expression patterns during the parasite life cycle...
June 2017: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28719641/inversion-of-the-imprinting-control-region-of-the-peg3-domain
#14
Joomyeong Kim, Hongzhi He, Hana Kim
The imprinting of the mouse Peg3 domain is controlled through a 4-kb genomic region encompassing the bidirectional promoter and 1st exons of Peg3 and Usp29. In the current study, this ICR was inverted to test its orientation dependency for the transcriptional and imprinting control of the Peg3 domain. The inversion resulted in the exchange of promoters and 1st exons between Peg3 and Usp29. Paternal transmission of this inversion caused 10-fold down-regulation of Peg3 and 2-fold up-regulation of Usp29 in neonatal heads, consistent with its original promoter strength in each direction...
2017: PloS One
https://www.readbyqxmd.com/read/28719245/production-of-a-mouse-monoclonal-antibody-against-mortalin-by-whole-cell-immunization
#15
Marzieh Rezaei, Abbas Ghaderi
Pancreatic carcinoma is the fourth leading cause of cancer death and is characterized by early invasion and metastasis. Advances in molecular biology directed new strategies in targeted therapy using monoclonal antibodies. To identify new biomarkers, we generated a panel of monoclonal antibodies against the newly established cell line, Faraz-ICR, from a patient with acinar cell carcinoma. After immunization of BALB/c female mice with Faraz-ICR cell line and fusion of splenocytes with SP2/0 myeloma cell line, high reactive hybridoma producing antibodies to Faraz-ICR were detected using enzyme-linked immunosorbent assay, immunofluorescence staining and flow cytometry...
July 18, 2017: Monoclonal Antibodies in Immunodiagnosis and Immunotherapy
https://www.readbyqxmd.com/read/28719191/relationships-between-dissolved-organic-matter-composition-and-photochemistry-in-lakes-of-diverse-trophic-status
#16
Andrew Chapin Maizel, Jing Li, Christina K Remucal
The North Temperate Lakes-Long Term Ecological Research site includes seven lakes in northern Wisconsin that vary in hydrology, trophic status, and landscape position. We examine the molecular composition of dissolved organic matter (DOM) within these lakes using Fourier transform-ion cyclotron resonance mass spectrometry (FT-ICR MS) and quantify DOM photochemical activity using probe compounds. Correlations between the relative intensity of individual molecular formulas and reactive species production demonstrate the influence of DOM composition on photochemistry...
July 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28715885/the-effects-of-exercise-and-cold-exposure-on-mitochondrial-biogenesis-in-skeletal-muscle-and-white-adipose-tissue
#17
Nana Chung, Jonghoon Park, Kiwon Lim
PURPOSE: The purpose of this study was to determine whether exercise or/and cold exposure regulate mitochondria biogenesis-related gene expression in soleus and inguinal adipose tissue of mice. METHODS: Forty ICR 5-week old male mice were divided into four groups: thermoneutrality-untrained (23 ± 1 °C in room temperature, n=10), cold-water immersion (24 ± 1 °C, n=10), exercise in neutral temperature (34 ± 1 °C, n=10), and exercise in cold temperature (24 ± 1 °C, n=10)...
June 30, 2017: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/28713897/expression-of-irak%C3%A2-3-is-associated-with-colitis%C3%A2-associated-tumorigenesis-in-mice
#18
Dingting Xu, Hanyun Zhang, Xiaoying Wang, Yan Chen
Interleukin‑1 receptor‑associated kinase‑3 (IRAK‑3) is a negative regulator in Toll‑like receptor (TLR) pathways. The present study investigated the importance of IRAK‑3 in a mouse model of chemically‑induced colitis‑associated tumorigenesis. The colitis‑associated tumorigenesis was induced in ICR mice by the administration of 1,2‑dimethyl hydrazine (DMH) and dextran sodium sulfate (DSS), termed the DMH + DSS group. In the DSS group, mice were administered with DSS; in the DMH group, mice were injected with DMH; in the control group, mice were injected with physiological saline...
September 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28711654/involvement-of-endoplasmic-reticulum-stress-and-neurite-outgrowth-in-the-model-mice-of-autism-spectrum-disorder
#19
Koichi Kawada, Seisuke Mimori, Yasunobu Okuma, Yasuyuki Nomura
Neurodevelopmental disorders are congenital impairments, impeding the growth and development of the central nervous system. These disorders include autism spectrum disorder (ASD) and attention-deficit/hyperactivity disorder in Diagnostic and Statistical Manual of Mental Disorders-5. ASD is caused by a gene defect and chromosomal duplication. Despite numerous reports on ASD, the pathogenic mechanisms are not clear. The optimal methods to prevent ASD and to treat it are also not clear. Other studies have reported that endoplasmic reticulum (ER) stress contributes to the pathogenesis of neurodegenerative diseases...
July 12, 2017: Neurochemistry International
https://www.readbyqxmd.com/read/28708587/sodium-fluoride-induces-renal-inflammatory-responses-by-activating-nf-%C3%AE%C2%BAb-signaling-pathway-and-reducing-anti-inflammatory-cytokine-expression-in-mice
#20
Qin Luo, Hengmin Cui, Huidan Deng, Ping Kuang, Huan Liu, Yujiao Lu, Jing Fang, Zhicai Zuo, Junliang Deng, Yinglun Li, Xun Wang, Ling Zhao
Fluoride is widely distributed in the environment and often results in adverse health effects on animals and human beings. It has been proved that fluoride can induce inflammatory responses in vitro. However, very limited reports are focused on fluoride-induced inflammatory responses in vivo. In this study, mice were used to investigate sodium fluoride (NaF) induced renal inflammatory responses and the potential mechanism by using the methods of pathology, biochemistry, enzyme-linked immunosorbent assay (ELISA), quantitative real-time polymerase chain reaction (qRT-PCR) and western blot...
July 5, 2017: Oncotarget
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