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https://www.readbyqxmd.com/read/28734262/mercury-risk-in-poultry-in-the-wanshan-mercury-mine-china
#1
Runsheng Yin, Wei Zhang, Guangyi Sun, Zhaohui Feng, James P Hurley, Liyuan Yang, Lihai Shang, Xinbin Feng
In this study, total mercury (THg) and methylmercury (MeHg) concentrations in muscles (leg and breast), organs (intestine, heart, stomach, liver) and blood were investigated for backyard chickens, ducks and geese of the Wanshan Mercury Mine, China. THg in poultry meat products range from 7.9 to 3917.1 ng/g, most of which exceeded the Chinese national standard limit for THg in meat (50 ng/g). Elevated MeHg concentrations (0.4-62.8 ng/g) were also observed in meat products, suggesting that poultry meat can be an important human MeHg exposure source...
July 19, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28734225/adverse-effects-of-methylmercury-mehg-on-life-parameters-antioxidant-systems-and-mapk-signaling-pathways-in-the-rotifer-brachionus-koreanus-and-the-copepod-paracyclopina-nana
#2
Young Hwan Lee, Duck-Hyun Kim, Hye-Min Kang, Minghua Wang, Chang-Bum Jeong, Jae-Seong Lee
To evaluate the adverse effects of MeHg on the rotifer Brachionus koreanus and the copepod Paracyclopina nana, we assessed the effects of MeHg toxicity on life parameters (e.g. growth retardation and fecundity), antioxidant systems, and mitogen-activated protein kinase (MAPK) signaling pathways at various concentrations (1ng/L, 10ng/L, 100ng/L, 500ng/L, and 1000ng/L). MeHg exposure resulted in the growth retardation with the increased ROS levels but decreased glutathione (GSH) levels in a dose-dependent manner in both B...
July 12, 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28730638/plasma-pharmacokinetics-of-quinocetone-in-ducks-after-oral-and-intravenous-administration
#3
M Qiu, Z Hao, R Zhang, L Cui, C Wang, S Qu, S Yuan, Y Bai
Quinocetone (QCT), an antimicrobial growth promoter, is widely used in food-producing animals. However, information about pharmacokinetics (PK) of QCT in ducks still remains unavailable up to now. In this study, QCT and its major metabolites (1-desoxyquinocetone, di-desoxyquinocetone and 3-methyl-quinoxaline-2-carboxylic) in ducks were studied using a simple and sensitive UHPLC-MS/MS assay. Twenty ducks were divided into two groups. (n = 10/group). One group received QCT by oral administration at dose of 40 mg/kg while another group received QCT intravenously at 10 mg/kg...
July 20, 2017: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28730521/complete-genomic-sequence-of-a-duck-enteritis-virus-attenuated-via-serial-passage-in-chick-embryos
#4
Chenghuai Yang, Bing Zhang, Junping Li, Xiaojie Huang, Dan Liu, Lidan Hou, Qihong Li, Huijiao Li
Here, we present the complete genomic sequence of an attenuated duck enteritis virus (DEV). The Chinese standard challenge strain of DEV (DEV CSC) was serially passaged 20 times in chick embryo fibroblasts and then 85 times in chick embryos. The virus was attenuated and was avirulent to 2-month-old ducks. The attenuated DEV genome is 162,131 base pairs (bp) in length and as long as the parental genomic sequence. There are only 22 nucleotide substitutions, resulting in single amino acid changes in open reading frames LORF5, LORF4, UL41, UL39, UL32, UL13, UL10, UL3, US3, US4 and US7...
July 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28728835/a-multiplex-pcr-for-detection-of-six-viruses-in-ducks
#5
Yongjuan Wang, Shanyuan Zhu, Weiming Hong, Anping Wang, Weiyong Zuo
In this study, six pairs of specific primers that can amplify DNA fragments of different sizes were designed and synthesized according to viral protein gene sequences published in GenBank. Then, a multiplex PCR method was established for rapid detection of duck hepatitis virus 1, duck plague virus, duck Tembusu virus, muscovy duck parvovirus, muscovy duck reovirus, and duck H9N2 avian influenza virus, and achieve simple and rapid detection of viral diseases in ducks. Single PCR was used to confirm primer specificity, and PCR conditions were optimized to construct a multiplex PCR system...
July 17, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28728543/integrative-analysis-of-the-pekin-duck-anas-anas-micrornaome-during-feather-follicle-development
#6
Xingyong Chen, Kai Ge, Min Wang, Cheng Zhang, Zhaoyu Geng
BACKGROUND: The quality and yield of duck feathers are very important economic traits that might be controlled by miRNA regulation. The aim of the present study was to investigate the mechanism underlying the crosstalk between individual miRNAs and the activity of signaling pathways that control the growth of duck feathers during different periods. We therefore conducted a comprehensive investigation using Solexa sequencing technology on the Pekin duck microRNAome over six stages of feather development at days 11, 15, and 20 of embryonic development (during the hatching period), and at 1 day and 4 and 10 weeks posthatch...
July 20, 2017: BMC Developmental Biology
https://www.readbyqxmd.com/read/28725377/environmental-variability-and-population-dynamics-do-european-and-north-american-ducks-play-by-the-same-rules
#7
Hannu Pöysä, Jukka Rintala, Douglas H Johnson, Jukka Kauppinen, Esa Lammi, Thomas D Nudds, Veli-Matti Väänänen
Density dependence, population regulation, and variability in population size are fundamental population processes, the manifestation and interrelationships of which are affected by environmental variability. However, there are surprisingly few empirical studies that distinguish the effect of environmental variability from the effects of population processes. We took advantage of a unique system, in which populations of the same duck species or close ecological counterparts live in highly variable (north American prairies) and in stable (north European lakes) environments, to distinguish the relative contributions of environmental variability (measured as between-year fluctuations in wetland numbers) and intraspecific interactions (density dependence) in driving population dynamics...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28723748/clinical-characteristics-and-mutation-spectrum-of-gla-in-korean-patients-with-fabry-disease-by-a-nationwide-survey-underdiagnosis-of-late-onset-phenotype
#8
Jin-Ho Choi, Beom Hee Lee, Sun Hee Heo, Gu-Hwan Kim, Yoo-Mi Kim, Dae-Seong Kim, Jung Min Ko, Young Bae Sohn, Yong Hee Hong, Dong-Hwan Lee, Hoon Kook, Han Hyuk Lim, Kyung Hee Kim, Woo-Shik Kim, Geu-Ru Hong, Su-Hyun Kim, Sang Hyun Park, Chan-Duck Kim, So Mi Kim, Jeong-Sook Seo, Han-Wook Yoo
Fabry disease is a rare X-linked lysosomal storage disorder caused by an α-galactosidase A deficiency. The progressive accumulation of globotriaosylceramide (GL-3) results in life-threatening complications, including renal, cardiac, and cerebrovascular diseases. This study investigated the phenotypic and molecular spectra of GLA mutations in Korean patients with Fabry disease using a nationwide survey.This study included 94 patients from 46 independent pedigrees: 38 adult males, 46 symptomatic females, and 10 pediatric males...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723741/characterization-of-small-%C3%A2-3%C3%A2-cm-hepatic-lesions-with-atypical-enhancement-feature-and-hypointensity-in-hepatobiliary-phase-of-gadoxetic-acid-enhanced-mri-in-cirrhosis-a-stard-compliant-article
#9
Seung Kak Shin, Yun Soo Kim, Seung Joon Choi, Young Sup Shim, Dong Hae Jung, Oh Sang Kwon, Duck Joo Choi, Ju Hyun Kim
It is difficult to characterize the nodular lesions in cirrhotic liver if typical enhancement pattern is not present on dynamic contrast-enhanced imagings. Although the signal intensity of the hepatobiliary phase in gadoxetic acid-enhanced magnetic resonance imaging (MRI) is helpful for characterization of the lesions, some dysplastic nodules may also exhibit low signal intensity in the hepatobiliary phase. We aimed to assess the usefulness of gadoxetic acid (Gd-EOB-DTPA)-enhanced MRI including diffusion-weighted imaging (DWI) for differentiation between atypical small hepatocellular carcinomas (HCCs) and dysplastic nodules showing low signal intensity (SI) in the hepatobiliary phase, and to evaluate the MRI findings in determining the histological grade of atypical HCCs in patients with cirrhosis...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28723734/transcanalicular-diode-laser-assisted-revision-surgery-for-failed-dacryocystorhinostomy-with-or-without-distal-or-common-canalicular-obstruction
#10
Je Moon Yoon, Seung Wan Nam, Kyung In Woo, Yoon-Duck Kim
PURPOSE: To report the outcomes of transcanalicular diode laser-assisted revision surgery for failed dacryocystorhinostomy with/without distal or common canalicular obstruction. METHODS: The medical records and recorded videos of consecutive transcanalicular diode laser-assisted revision surgeries performed for failed dacryocystorhinostomy between May 2011 and May 2015 were reviewed. Cases of unavailability of video and cases lost to follow up after surgery were excluded from the study...
July 18, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28717315/seroprevalence-of-antibodies-to-astrovirus-in-chickens-in-grenada-west-indies
#11
Ravindra Nath Sharma, Romane Dufayet, Thomas Maufras, Kathryn O' Connell, Keshaw Tiwari
AIM: Chicken astroviruses (CAstV) are known to cause mild gastroenteritis, growth depression, and even mortality in poultry, especially in chickens, turkeys, and ducks. To the best our knowledge, there is no published information on CAstV in Grenada. This study was conducted to determine the prevalence of astrovirus in chickens in Grenada. MATERIALS AND METHODS: Blood samples from 366 indigenous chickens and 92 commercial chicken layers were collected from all parishes of the island and tested for antibodies against CAstV using commercial enzyme-linked immunosorbent assay...
June 2017: Veterinary World
https://www.readbyqxmd.com/read/28715672/genomic-and-pathogenic-analysis-of-a-muscovy-duck-parvovirus-strain-causing-short-beak-and-dwarfism-syndrome-without-tongue-protrusion
#12
Qiuling Fu, Yu Huang, Chunhe Wan, Guanghua Fu, Baomin Qi, Longfei Cheng, Shaohua Shi, Hongmei Chen, Rongchang Liu, Zhenhai Chen
In 2008, clinical cases of short beak and dwarfism syndrome (SBDS) caused by Muscovy duck parvovirus (MDPV) infection were found in mule duck and Taiwan white duck farms in Fujian, China. A MDPV LH strain causing duck SBDS without tongue protrusion was isolated in this study. Phylogenetic analysis show that the MDPV LH strain was clustered together with other MDPV strains, but divergent from GPV isolates. Two major fragment deletions were found in the inverted terminal repeats (ITR) of MDPV LH similar to the ones in the ITR of MDPV GX5, YY and SAAS-SHNH strains...
July 12, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28715187/charge-density-wave-and-narrow-energy-gap-at-room-temperature-in-2d-pb3-xsb1-xs4te2-%C3%AE-with-square-te-sheets
#13
Haijie Chen, Christos D Malliakas, Awadhesh Narayan, Lei Fang, Duck Young Chung, Lucas K Wagner, Wai-Kwong Kwok, Mercouri G Kanatzidis
We report a new two-dimensional compound Pb3-xSb1+xS4Te2-δ has a charge density wave (CDW) at room temperature. The CDW is incommensurate with q-vector of 0.248(6)a* + 0.246(8)b* + 0.387(9)c* for x = 0.29(2) and δ = 0.37(3) due to positional and occupational long range ordering of Te atoms in the sheets. The modulated structure was refined from the single crystal X-ray diffraction data with a superspace group P-1(αβγ)0 using (3 + 1)-dimensional crystallography. The resistivity increases with decreasing temperature, suggesting semiconducting behavior...
July 17, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28709736/supplementation-of-tris-based-extender-with-plasma-egg-yolk-of-six-avian-species-and-camel-skim-milk-for-chilled-preservation-of-dromedary-camel-semen
#14
Farnaz Panahi, Amir Niasari-Naslaji, Fahimehsadat Seyedasgari, Tahereh Ararooti, Kamal Razavi, Ali Akbar Moosavi-Movaheddi
The present study was conducted to investigate a suitable source (Expt. 1) and concentration (Expt. 2) of plasma egg yolk (PEY) and concentration of camel skim milk (CSM; Expt. 3) to supplement tris based extender for chilled storage of dromedary camel semen. In Expt. 1, PEY (20%) of six avian species (domestic chicken, domestic duck, Japanese quail, partridge, pigeon and guinea fowl) was added to semen extender. In Expt. 2, different concentrations (0, 10, 20, 30 and 40%) of selected PEY from Expt.1 were added to semen extender...
June 23, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28709111/genome-wide-identification-of-52-cytochrome-p450-cyp-genes-in-the-copepod-tigriopus-japonicus-and-their-b-%C3%AE-p-induced-expression-patterns
#15
Jeonghoon Han, Duck-Hyun Kim, Hui-Su Kim, David R Nelson, Jae-Seong Lee
Cytochrome P450s (CYPs) are enzymes with a heme-binding domain that are found in all living organisms. CYP enzymes have important roles associated with detoxification of xenobiotics and endogenous compounds (e.g. steroids, fatty acids, and hormones). Although CYP enzymes have been reported in several invertebrates, including insects, little is known about copepod CYPs. Here, we identified the entire repertoire of CYP genes (n=52) from whole genome and transcriptome sequences of the benthic copepod Tigriopus japonicus, including a tandem duplication (CYP3026A3, CYP3026A4, CYP3026A5), and examined patterns of gene expression over various developmental stages and in response to benzo[α]pyrene (B[α]P) exposure...
July 6, 2017: Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics
https://www.readbyqxmd.com/read/28708585/the-neglected-avian-hepatotropic-virus-induces-acute-and-chronic-hepatitis-in-ducks-an-alternative-model-for-hepatology
#16
Xumin Ou, Sai Mao, Jingyu Cao, Yunchao Ma, Guangpeng Ma, Anchun Cheng, Mingshu Wang, Dekang Zhu, Shun Chen, Renyong Jia, Mafeng Liu, Kunfeng Sun, Qiao Yang, Ying Wu, Xiaoyue Chen
Duck Hepatitis A Virus (DHAV) belongs to the Avihepatovirus, which is also classified into Picornaviridae with Hepatovirus, Hepatitis A Virus (HAV). In humans, the pathogenesis of HAV is not well understood because of limited work with animal models. Here, we investigated the progress of duck viral hepatitis caused by DHAV and their potential for dissecting the pathogenesis of HAV. During the course of infection, the duck model had undergone hepatocellular lesions (vacuolation, acidophilic degeneration and steatosis), lymphocytes recruitment (neutrophil granulocytes, heterophilic granulocytes and T cells or plasm cells) and repair (activation of hepatic stellate cells, fibrosis and regeneration)...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28705661/canaliculorhinostomy-indications-and-surgical-results
#17
Jung Hye Lee, Stephanie Ming Young, Yoon-Duck Kim, Kyung In Woo, Jung-Hoon Yum
PURPOSE: To report the surgical results of canaliculorhinostomy for patients with distal canalicular obstruction and lacking a structurally functional lacrimal sac who would otherwise require a conjunctivodacryocystorhinostomy(CDCR) with Jones tube placement. DESIGN: Retrospective observational case series. METHODS: • Setting: Single tertiary institution. • Period: November 1994 to June 2011. • Patient Population: 16 patients with canalicular obstruction at or beyond 8 mm from the punctum, with an absent or unidentifiable lacrimal sac...
July 10, 2017: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/28702949/genetic-analysis-of-optic-nerve-head-coloboma-in-the-nova-scotia-duck-tolling-retriever-identifies-discordance-with-the-nhej1-intronic-deletion-collie-eye-anomaly-mutation
#18
Emily A Brown, Sara M Thomasy, Christopher J Murphy, Danika L Bannasch
Collie eye anomaly (CEA) encompasses a spectrum of different ophthalmic phenotypes from clinically inconsequential choroidal hypoplasia to blindness from coloboma of the optic nerve head (ONH). A previous study found a 7.8-kb deletion in intron 4 of the NHEJ1 gene to be associated with CEA. A genetic test based on this association is recommended for many breeds, including the Nova Scotia Duck Tolling Retriever (NSDTR). Collection of ONH coloboma-affected NSDTR showed lack of concordance of the NHEJ1 intronic deletion with ONH coloboma...
July 12, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28699726/in-vitro-digestibility-study-of-some-plant-protein-sources-as-aquafeed-for-carps-labeo-rohita-and-cyprinus-carpio-using-ph-stat-method
#19
Jai Gopal Sharma, Ashok Kumar, Deepak Saini, Nawang Lendup Targay, Bronson Kumar Khangembam, Rina Chakrabarti
Aquaculture, as a promising food industry, is expected to meet the demand for quality food from the increasing human population. As the diet is critical for feeding farm fish, such a faster growth in the industry is destined to create stress in the fishmeal market to supply diets to the tune. In this context, here, we studied the protein content of 20 plant ingredients, including aquatic weeds, cereals, pulses and oil-cakes using micro-Kjeldahl method and evaluated in vitro digestibility of these ingredients for rohu Labeo rohita and common carp Cyprinus carpio using pH-Stat method...
September 2016: Indian Journal of Experimental Biology
https://www.readbyqxmd.com/read/28692912/effects-of-molybdenum-and-cadmium-on-the-oxidative-damage-and-kidney-apoptosis-in-duck
#20
Lele Shi, Huabin Cao, Junrong Luo, Ping Liu, Tiancheng Wang, Guoliang Hu, Caiying Zhang
Molybdenum (Mo) is an essential element for human beings and animals; however, high dietary intake of Mo can lead to adverse reactions. Cadmium (Cd) is one of the major transitional metals which has toxic effects in animals. To investigate the co-induced toxic effects of Mo and Cd on oxidative damage and kidney apoptosis in duck, 120 ducks were randomly divided into control group and 5 treatment groups which were treated with a commercial diet containing different dosages of Mo and Cd. Kidney samples were collected on the 60th and 120th days to determine the mRNA expression levels of ceruloplasmin (CP), metallothionein (MT), Bak-1, and Caspase-3 by quantitative RT-PCR...
July 7, 2017: Ecotoxicology and Environmental Safety
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