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https://www.readbyqxmd.com/read/29932111/protective-effect-of-octylmethoxycinnamate-against-uv-induced-photoaging-in-hairless-mouse-via-the-regulation-of-matrix-metalloproteinases
#1
So Young Kim, Santosh Lamichhane, Jung-Hun Ju, Jaesuk Yun
Ultraviolet (UV) irradiation damages skin and produces symptoms of photoaging, such as thickening, rough texture, wrinkles, and pigmentation. However, the cellular and molecular mechanisms underlying photoaging induced by chronic UV irradiation are not yet fully understood. Matrix metalloproteinases (MMPs) have been reported to be involved in the response to UV irradiation. In this study, we examined the effects of the sunscreen agent Octylmethoxycinnamate (OMC) on photoaging of the skin induced by chronic UV exposure in hairless albino Crl:SKH1- Hrhr (SKH-1) mice...
June 22, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29931193/protecting-only-white-children-the-impact-of-child-restraint-legislation-in-brazil
#2
José Ignacio Nazif-Muñoz, Arijit Nandi, Mónica Ruiz-Casares
Background: In 2010, Brazil introduced child restraint legislation (CRL). We assessed the effectiveness of CRL in reducing child (aged 0-8 years) injuries and fatalities by race. We performed an evaluation study with an interrupted time-series design. Methods: We measured the effect of CRL on two outcomes-number of child deaths and number of child injured in traffic collisions per child population, stratified by race, from 2008 to 2014. We controlled for time, unemployment rate and oil consumption (barrels/day in thousands)...
June 20, 2018: Journal of Public Health
https://www.readbyqxmd.com/read/29929056/n-acetyl-cysteine-inhibits-lipopolysaccharide-mediated-induction-of-interleukin-6-synthesis-in-mc3t3-e1-cells-through-the-nf-kb-signaling-pathway
#3
Ling Guo, Hui Zhang, Wangyang Li, Danting Zhan, Min Wang
BACKGROUND: Interleukin-6 (IL-6) is a potent stimulator of osteoclastic activity. Lipopolysaccharide (LPS) has been shown to regulate the expression of potent inflammatory factors, including TNF-α and IL-6. Currently, effective therapeutic treatments for bacteria-caused bone destruction are limited. N-acetyl cysteine (NAC) is an antioxidant small molecule that possibly modulates osteoblastic differentiation. However, whether NAC can affect the LPS-mediated reduction of IL-6 synthesis in MC3T3-E1 cells is still unknown...
June 6, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29925439/effects-of-polyunsaturated-fatty-acids-supplementation-on-reproductive-parameters-associated-with-the-performance-of-suckled-beef-cows
#4
P L P Fontes, D D Henry, F M Ciriaco, N Oosthuizen, R F Cooke, V R G Mercadante, N DiLorenzo, G C Lamb
To evaluate the effects of a polyunsaturated fatty acids (PUFA) supplement on reproductive parameters of suckled beef cows, two experiments were conducted. In Experiment (Exp.) 1, 60 primiparous cows were randomly assigned to one of two treatments: CTRL - 1.36 kg/day of corn gluten feed (CGF) and MEGR - 1.36 kg/day of CGF and 0.23 kg/day of calcium salts of soybean oil. Supplementation occurred from 30 days before fixed-time artificial insemination (TAI) until 7 days post-TAI. The expression of interferon-stimulated genes (ISG) was measured on days 18 and 21...
June 21, 2018: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29920360/sub-chronic-toxicity-of-gyejibokryeong-hwan-in-sprague-dawley-rats
#5
Seong Eun Jin, Chang-Seob Seo, Mee-Young Lee, Hyeun-Kyoo Shin, Mi-Jin Yang, Hyekyung Ha
ETHNOPHARMACOLOGICAL RELEVANCE: Traditional herbal formula Gyejibokryeong-hwan (GJBRH; Guizhifuling-wan, Keishibukuryo-gan) consisting five medicinal herbs has been used to treat uterine disorders, gynecological diseases and blood stasis syndrome in Asia. AIM OF THE STUDY: We evaluated the safety of GJBRH in Crl:CD Sprague-Dawley (SD) rats over a period of 13 weeks. MATERIALS AND METHODS: To confirm the stability of the components of GJBRH, we analyzed the component contents in GJBRH at different storage periods, using high-performance liquid chromatography...
June 16, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29910671/inhibition-of-crl-nedd8-pathway-as-a-new-approach-to-enhance-atra-induced-differentiation-of-acute-promyelocytic-leukemia-cells
#6
Shuyuan Liu, Jinhua Wan, Yunyuan Kong, Yonglu Zhang, Lagen Wan, Zhanglin Zhang
The cullin-RING ligase (CRL)-NEDD8 pathway maintains essential cellular processes, including cell cycle progression, apoptosis, autophagy, DNA repair, antigen processing and signal transduction. Growing evidence demonstrates that the alteration of the CRL-NEDD8 pathway in some cancers constitutes an attractive target for therapeutic intervention, but the roles of CRL-NEDD8 pathway in acute promyelocytic leukemia (APL) is still unclear. In the present study, we found that ATRA could decrease the expression of NEDD8-activating enzyme E1 (NAE1) and inhibit the neddylation of cullin1 and cullin3 in the APL cell line NB4...
2018: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/29909289/nedd8-its-role-in-the-regulation-of-cullin-ring-ligases
#7
REVIEW
Claus Schwechheimer
The ubiquitin-related protein NEDD8 is conjugated and deconjugated to and from proteins in processes related to ubiquitin conjugation and deconjugation. Neddylation is a well-studied posttranslational modification of Cullin-RING E3 ligases (CRLs). Biochemical and structural studies aiming at understanding the role of NEDD8 in CRL function have now resulted in a convincing model of how neddylation and deneddylation antagonistically regulate CRL stability, conformation, activity as well as degradation substrate receptor exchange...
June 14, 2018: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29904102/targeting-prpk-and-topk-for-skin-cancer-prevention-and-therapy
#8
Eunmiri Roh, Mee-Hyun Lee, Tatyana A Zykova, Feng Zhu, Janos Nadas, Hong-Gyum Kim, Ki Beom Bae, Yan Li, Yong Yeon Cho, Clara Curiel-Lewandrowski, Janine Einspahr, Sally E Dickinson, Ann M Bode, Zigang Dong
Solar ultraviolet (sUV) irradiation is a major environmental carcinogen that can cause inflammation and skin cancer. The costs and morbidity associated with skin cancer are increasing, and therefore identifying molecules that can help prevent skin carcinogenesis is important. In this study, we identified the p53-related protein kinase (PRPK) as a novel oncogenic protein that is phosphorylated by the T-LAK cell-originated protein kinase (TOPK). Knockdown of TOPK inhibited PRPK phosphorylation and conferred resistance to solar-simulated light (SSL)-induced skin carcinogenesis in mouse models...
June 14, 2018: Oncogene
https://www.readbyqxmd.com/read/29893403/prenatal-histomorphological-development-of-the-rumen-in-dama-dama
#9
Eloy Redondo, Ángela García, Cristina Ortega, Fernando J Peña, A Javier Masot
This work studies the morphological changes taking place in the Dama dama rumen during prenatal development using histomorphometrics, surface micro-structure and immunohistochemistry analysis as well as carrying out a comparative analysis of this species with other wild (red deer) and domestic-type ruminants. A total of 25 fallow deer embryos and fetuses were used, from the first stage of prenatal life until birth. The appearance of the rumen from the primitive gastric tube was observed at 51 days of prenatal life (CRL 3 cm, 21% gestation)...
June 12, 2018: Histology and Histopathology
https://www.readbyqxmd.com/read/29892794/characterization-and-comparative-expression-analysis-of-cul1-genes-in-rice
#10
Sang-Hoon Kim, Og-Geum Woo, Hyunsoo Jang, Jae-Hoon Lee
Cullin-RING E3 ubiquitin ligase (CRL) complex is known as the largest family of E3 ligases. The most widely characterized CRL, SCF complex (CRL1), utilizes CUL1 as a scaffold protein to assemble the complex components. To better understand CRL1-mediated cellular processes in rice, three CUL1 genes (OsCUL1s) were isolated in Oryza sativa. Although all OsCUL1 proteins exhibited high levels of amino acid similarities with each other, OsCUL1-3 had a somewhat distinct structure from OsCUL1-1 and OsCUL1-2. Basal expression levels of OsCUL1-3 were much lower than those of OsCUL1-1 and OsCUL1-2 in all selected samples, showing that OsCUL1-1 and OsCUL1-2 play predominant roles relative to OsCUL1-3 in rice...
March 2018: Genes & Genomics
https://www.readbyqxmd.com/read/29890653/application-of-ti6al7nb-alloy-for-the-manufacture-of-biomechanical-functional-structures-bfs-for-custom-made-bone-implants
#11
Patrycja Szymczyk, Grzegorz Ziółkowski, Adam Junka, Edward Chlebus
Unlike conventional manufacturing techniques, additive manufacturing (AM) can form objects of complex shape and geometry in an almost unrestricted manner. AM’s advantages include higher control of local process parameters and a possibility to use two or more various materials during manufacture. In this work, we applied one of AM technologies, selective laser melting, using Ti6Al7Nb alloy to produce biomedical functional structures (BFS) in the form of bone implants. Five types of BFS structures (A1, A2, A3, B, C) were manufactured for the research...
June 8, 2018: Materials
https://www.readbyqxmd.com/read/29873762/the-ubiquitin-proteasome-system-as-a-regulator-of-plant-immunity
#12
Eleanor H G Adams, Steven H Spoel
The ubiquitin-proteasome system (UPS) has been shown to play vital roles in diverse plant developmental and stress responses. The UPS post-translationally modifies cellular proteins with the small molecule ubiquitin, resulting in their regulated degradation by the proteasome. Of particular importance is the role of the UPS in regulating hormone-responsive gene expression profiles, including those triggered by the immune hormone salicylic acid (SA). SA utilises components of the UPS pathway to reprogram the transcriptome for establishment of local and systemic immunity...
June 5, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29870989/reference-ranges-for-transvaginal-examined-fossa-posterior-structures-in-fetuses-from-45-to-84-mm-crown-rump-length
#13
Reinhard Altmann, Christian Specht, Iris Scharnreitner, Caroline Schertler, Richard Mayer, Wolfgang Arzt, Matthias Scheier
OBJECTIVE: The study aimed to describe reference values for structures of the posterior fossa in fetuses with a crown-rump length (CRL) between 45 and 84 mm. MATERIALS AND METHODS: This was a prospective, cross-sectional study including 216 normal appearing fetuses. In transvaginal acquired 3-dimensional volume blocks, the longest diameter of the vermis (VE), posterior membranous area (PMA), medulla-oblongata-pons angle (MOPA), diameters of the medulla oblongata (MO) and pons (PO), and the area of Blake's pouch (BP) were measured...
June 5, 2018: Gynecologic and Obstetric Investigation
https://www.readbyqxmd.com/read/29868454/carcinogenic-activity-of-pentabrominated-diphenyl-ether-mixture-de-71-in-rats-and-mice
#14
J K Dunnick, A R Pandiri, B A Merrick, G E Kissling, H Cunny, E Mutlu, S Waidyanatha, R Sills, H L Hong, T V Ton, T Maynor, L Recio, S L Phillips, M J Devito, A Brix
Pentabrominated diphenyl ether (PBDE) flame retardants have been phased out in Europe and in the United States, but these lipid soluble chemicals persist in the environment and are found human and animal tissues. PBDEs have limited genotoxic activity. However, in a 2-year cancer study of a PBDE mixture (DE-71) (0, 3, 15, or 50 mg/kg (rats); 0, 3, 30, or 100 mg/kg (mice)) there were treatment-related liver tumors in male and female Wistar Han rats [Crl:WI(Han) after in utero/postnatal/adult exposure, and in male and female B6C3F1 mice, after adult exposure...
2018: Toxicology Reports
https://www.readbyqxmd.com/read/29864428/intradermal-delivery-of-a-near-infrared-photosensitiser-using-dissolving-microneedle-arrays
#15
Iman M N Hamdan, Ismaiel A Tekko, Kyle B Matchett, Luis G Arnaut, Claudia S Silva, Helen O McCarthy, Ryan F Donnelly
Nodular basal cell carcinoma is a deep skin lesion and one of the most common cancers. Conventional photodynamic therapy (PDT) is limited to treatment of superficial skin lesions. The parenteral administration of near infrared (NIR) preformed photosensitisers suffers from poor selectivity and may result in prolonged skin photosensitivity. Microneedles (MN) can provide localised drug delivery to skin lesions. Intradermal delivery of the preformed NIR photosensitiser; 5,10,15,20-tetrakis(2,6-difluoro-3-N-methylsulfamoylphenyl bacteriochlorin (Redaporfin™™) using dissolving MN was successful in vitro and in vivo...
June 1, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29862461/modulatory-effect-of-the-intracellular-content-of-lactobacillus-casei-crl-431-against-the-aflatoxin-b-1-induced-oxidative-stress-in-rats
#16
J E Aguilar-Toalá, H Astiazarán-García, M C Estrada-Montoya, H S Garcia, B Vallejo-Cordoba, A F González-Córdova, A Hernández-Mendoza
It has been recognized that lactic acid bacteria exhibit antioxidant properties, which have been mainly endorsed to the intact viable bacteria. However, recent studies have shown that intracellular content (IC) may also be good sources of antioxidative metabolites, which may potentially contribute to oxidative homeostasis in vivo. Hence, the modulatory effect of the intracellular content of Lactobacillus casei CRL 431 (IC431) on aflatoxin B1 (AFB1 )-induced oxidative stress in rats was evaluated on the basis of its influence on hepatic lipid peroxidation (LPO), antioxidant status-antioxidant capacity (TAC), catalase (CAT), and glutathione peroxidase (GPx) activities; and on the oxidative stress index (OSi)...
June 3, 2018: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29848489/characterisation-of-cellular-effects-of-burkholderia-pseudomallei-cycle-inhibiting-factor-cif
#17
Mei Ying Ng, Yunn-Hwen Gan, Thilo Hagen
Cycle inhibiting factors (Cifs) are type III secretion system effectors produced by some Gram-negative pathogenic bacteria including Burkholderia pseudomallei Through their deamidase activity, Cifs inhibit the activity of Cullin RING E3 ubiquitin ligases (CRL). CRL inhibition induces the accumulation of cell cycle inhibitors p21 and p27, thereby leading to host cell cycle arrest. However, whether Cif exerts additional effects on host cells that are important in bacterial pathogenesis is currently poorly understood...
May 30, 2018: Biology Open
https://www.readbyqxmd.com/read/29803439/increasing-the-folate-content-of-tuber-based-foods-using-potentially-probiotic-lactic-acid-bacteria
#18
A L Mosso, M E Jimenez, G Vignolo, J G LeBlanc, N C Samman
It is known that certain lactic acid bacterial (LAB) strains can produce folates, a B-group vitamin that cannot be synthesized by humans and must be exogenously obtained. The aim of this study was to select folate-producing LAB and evaluate their probiotic characteristics in order to obtain a tuber-based food with elevated folate content. Several LAB strains were isolated from a traditional Andean fermented potato product tocosh and cultured in folate-free culture medium. Five folate-producing strains (29-138 ng/mL) were selected to ferment three Andean tubers (potato S...
July 2018: Food Research International
https://www.readbyqxmd.com/read/29803428/simultaneous-concentration-and-separation-of-target-compounds-from-multicomponent-mixtures-by-closed-loop-recycling-countercurrent-chromatography
#19
Artak Kostanyan, Maria Martynova, Andrey Erastov, Vera Belova
Closed-loop recycling countercurrent chromatography (CLR CCC) with multiple sample injection has been shown to provide simultaneous concentration and separation of target compounds from multicomponent mixtures. Previous analysis of CLR CCC with multiple sample injections has been limited to the ideal recycling model, which neglects the effects caused by the pump and connecting lines. In this study, an analysis of the process is carried out based on the non-ideal recycling model: recycling chromatograms at two points of the closed-loop - the inlet of the column (A) and the outlet of the column (B) - are considered...
May 23, 2018: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29799469/novel-safranin-tinted-candida-rugosa-lipase-nanoconjugates-reagent-for-visualizing-latent-fingerprints-on-stainless-steel-knives-immersed-in-a-natural-outdoor-pond
#20
Aida Rasyidah Azman, Naji Arafat Mahat, Roswanira Abdul Wahab, Fazira Ilyana Abdul Razak, Hafezul Helmi Hamzah
Waterways are popular locations for the disposition of criminal evidence because the recovery of latent fingerprints from such evidence is difficult. Currently, small particle reagent is a method often used to visualize latent fingerprints containing carcinogenic and hazardous compounds. This study proposes an eco-friendly, safranin-tinted Candida rugosa lipase (triacylglycerol ester hydrolysis EC 3.1.1.3) with functionalized carbon nanotubes (CRL-MWCNTS/GA/SAF) as an alternative reagent to the small particle reagent...
May 25, 2018: International Journal of Molecular Sciences
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