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Pierre Billon; Jian Li; Jean-Philippe Lambert; Yizhang Chen; Véronique Tremblay; Joseph S. Brunzelle; Anne-Claude Gingras; Alain Verreault; Tomohiko Sugiyama; Jean-Francois Couture; Jacques Côté
DNA; DNA damage; DNA replication; acetylation; cohesion; crystal structure; genome; homologous recombination; lysine; mutation; post-translational modification; proliferating cell nuclear antigen; protein subunits
Abstract:
... During DNA replication, proliferating cell nuclear antigen (PCNA) adopts a ring-shaped structure to promote processive DNA synthesis, acting as a sliding clamp for polymerases. Known posttranslational modifications function at the outer surface of the PCNA ring to favor DNA damage bypass. Here, we demonstrate that acetylation of lysine residues at the inner surface of PCNA is induced by DNA lesion ...
... CASE HISTORY: A herd of Holstein, Jersey, or Holstein-Jersey cross lactating cattle of mixed ages presented with a sudden drop in milk yield in 94/678 cows on 3 October 2014 (Day 0). The herd was located in Gretna in the Derwent Valley (Tasmania, Australia) and had been grazing dryland pasture. CLINICAL FINDINGS: On Day 0 the cows variably showed recumbency, peracute photosensitisation, inflamed c ...
Yahaira J. Tamayo‐Ordóñez; Benjamin A. Ayil‐Gutiérrez; Felipe L. Sánchez‐Teyer; Erika A. De la Cruz‐Arguijo; Francisco A. Tamayo‐Ordóñez; Atl Victor Córdova‐Quiroz; Maria C. Tamayo‐Ordóñez
... Biofuels have been shown to be a promising and highly attractive alternative for minimizing the use of fossil fuels, and microalgae have positioned themselves as potential candidates for production of lipids and other substances of commercial interest. We briefly review recent advances made in microalgae culture conditions and genetic manipulation for improving lipid yields for biofuel production ...
... Biofuel from fatty acids with chain lengths of 8–15 (C8–C15) have properties similar to those of conventional diesel and jet fuels, thus, can save time and reduce costs for the refurbishment of engines and maintenance of oiling facilities. Most oil‐producing algae yield C16–C18 fatty acids; however, the manipulation of algae using genetic engineering is a promising approach to obtain C8–C15 fatty ...
Francisco Navarro; Eduardo Forján; María Vázquez; Alberto Toimil; Zaida Montero; María del C. Ruiz‐Domínguez; Inés Garbayo; Miguel Á. Castaño; Carlos Vílchez; José M. Vega
... Extremophilic microalgae are unexplored as a source of pharmaceuticals despite the fact that its biomass can be produced at large scale with low risk of contamination. A significant amount of antimicrobial activity was produced by extracts obtained from the eukaryotic acidophilic microalgae Coccomyxa onubensis in non‐polar solvents, such as hexane, diethyl ether, and chloroform or in weakly polar ...
... Antroquinonol (ANQ) is a ubiquinone derivative from the unique mushroom Antrodia camphorata, which exhibits broad-spectrum bioactivities. The effects of ANQ on cancer stem cell-like properties in colon cancer, however, remain unclear. In this study, we found that ANQ inhibited growth of colon cancer cells. The 50% growth inhibitions (GI₅₀) of ANQ on HCT15 and LoVo were 34.8 ± 0.07 and 17.9 ± 0.07 ...
... Transabdominal ultrasonography has been shown to be a useful and reliable method for assessing fetal well-being in horses and cattle. To test the applicability of fetal aortic diameter measurement in cattle, 44 late-term pregnant cows and heifers were examined 21 to 0 days prior to calving. Mean fetal aortic diameter was 2.07 ± 0.14 cm and mean fetal heart rate (FHR) was 109 ± 17 bpm. Three dead c ...
... Arginine methylation is a common post-translational modification functioning as an epigenetic regulator of transcription and playing key roles in pre-mRNA splicing, DNA damage signaling, mRNA translation, cell signaling, and cell fate decision. Recently, a wealth of studies using transgenic mouse models and selective PRMT inhibitors helped define physiological roles for protein arginine methyltran ...
... The potential use of allelopathic and signaling compounds as environmentally friendly agrochemicals is a subject of increasing interest, but the fate of these compounds once they reach the soil environment is poorly understood. This work studied how the sorption, persistence, and leaching of the two enantiomers of the phytohormone abscisic acid (ABA) in agricultural soil was affected by the amendm ...
... Bacteriophages are an attractive alternative to faecal indicator bacteria (FIB), particularly as surrogates of enteric virus fate and transport, due to their closer morphological and biological properties. Based on a review of published data, we summarize densities of coliphages (F+ and somatic), Bacteroides spp. and enterococci bacteriophages (phages) in individual human waste, raw wastewater, am ...
... Antroquinonol (AQ) and 4-acetylantroquinonol B (4-AAQB), isolated from the mycelium of Antrodia cinnamomea, have a similar chemical backbone to coenzyme Q (CoQ). Based on the postulation that biosynthesis of both AQ and 4-AAQB in A. cinnamomea starts from the polyketide pathway, we cultivated this fungus in a culture medium containing [U-¹³C]oleic acid, and then we analyzed the crude extracts of t ...
... Blueberry anthocyanin-enriched extracts (BAE) at three doses (0.5, 1.0, and 2.0 g/kg) were administered by oral gavage to rats exposed to 10 mg/kg fine particulate matter (PM₂.₅) three times a week. A positive control group was exposed to PM₂.₅ without BAE treatment. We analyzed heart rate (HR), electrocardiogram (ECG), and histopathology, and biomarkers of cardiovascular system injuries, systemic ...
... Assessing habitat naturalness belongs to the most current issues in conservation biology. It has been recognized that plants are able to indicate the naturalness of their habitat. Thus, species may be given relative naturalness indicator values (i.e. scores on an ordinal scale), reflecting their different tolerances against habitat degradation. In the present study, our first goal was to test whet ...
Porcine reproductive and respiratory syndrome virus; antibodies; gel electrophoresis; genes; mice; nucleic acids; nucleocapsid; open reading frames; proteins; swine
Abstract:
... A short alternative open reading frame named ORF7a has recently been discovered within the nucleocapsid gene of the porcine reproductive and respiratory syndrome virus (PRRSV) genome. Proteins (7ap) translated from the ORF7a of two divergent strains — a type I and a type II — are able to completely reduce the motility of nucleic acids at relatively high molar charge ratios in gel retardation assay ...
... A giant ragweed population with putative resistance to cloransulam was identified in a long-term corn—soybean rotation located in southern Wisconsin. The population represented the first potential instance of giant ragweed resistance to acetolactate synthase (ALS) inhibitors in the state. Seeds were collected from several plants and pooled for subsequent experiments. Whole-plant dose—response expe ...
... Application of the sensomics concept elucidated the key odorants of heat-processed licorice (Succus Liquiritiae). Forty-nine aroma-active compounds with flavor dilution (FD) factors between 16 and 2048 were detected; 47 thereof were identified, 23 for the first time in heated licorice. 4-Hydroxy-2,5-dimethylfuran-3(2H)-one revealed the highest FD factor of 2048, followed by 3-hydroxy-4,5-dimethylf ...
... The aroma profile of Chinese roasted sesame-like flavor type liquor was investigated by means of headspace solid phase microextraction–aroma extract dilution analysis (HS-SPME-AEDA). Sixty-three odor-active regions were detected by HS-SPME-AEDA with flavor dilution (FD) factors >5, and 58 of these were further identified. Among them, ethyl hexanoate, 2-furfurylthiol, dimethyl trisulfide, 3-methylb ...
DNA damage; bioavailability; cell viability; chemoprevention; colon; colorectal neoplasms; dietary fiber; digestion; flavorings; inhibitory concentration 50; intestinal microorganisms; phenolic acids; polyphenols; pomace; red wines; seeds; short chain fatty acids; small intestine
Abstract:
... This study evaluates the antiproliferative and antigenotoxic actions of powdered red wine pomace seasonings (Sk-S, seedless; W–S, whole; Sd-S, seeds). In vitro gastrointestinal digested and colonic fermented fractions of the seasonings were used as cell treatments. Phenolic acids from Sk-S showed the highest bioaccessibility in the small intestine, whereas polyphenols contained in Sd-S might be th ...
Picea abies; air temperature; carbon dioxide; climatic factors; earlywood; growing season; latewood; trees
Abstract:
... This investigation examined the effects of two different carbon dioxide concentrations ([CO₂]): Ambient (A, 385 μmol (CO₂) mol⁻¹) and elevated (E, A+385 μmol (CO₂) mol⁻¹)) on the tree-ring width and early to latewood proportion in Norway spruce for seven years (2006-2012). Further, to improve our understanding of the influence of climatic variables, we assessed the effects of precipitation and tem ...
... There is a lack of data on comparative anatomy of the assimilatory organs of the enigmatic carnivorous Nepenthes species; the linkages between their leaf tissue anatomy and physico-chemical properties are also rarely considered. We examined the anatomy of the leaf (lamina) and its conjoint pitcher in five Nepenthes species (Nepenthes ampullaria, N. bicalcarata, N. gracilis, N. hemsleyana and N. ra ...