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https://www.readbyqxmd.com/read/28919898/chitosan-increases-tomato-root-colonization-by-pochonia-chlamydosporia-and-their-combination-reduces-root-knot-nematode-damage
#1
Nuria Escudero, Federico Lopez-Moya, Zahra Ghahremani, Ernesto A Zavala-Gonzalez, Aurora Alaguero-Cordovilla, Caridad Ros-Ibañez, Alfredo Lacasa, Francisco J Sorribas, Luis V Lopez-Llorca
The use of biological control agents could be a non-chemical alternative for management of Meloidogyne spp. [root-knot nematodes (RKN)], the most damaging plant-parasitic nematodes for horticultural crops worldwide. Pochonia chlamydosporia is a fungal parasite of RKN eggs that can colonize endophytically roots of several cultivated plant species, but in field applications the fungus shows a low persistence and efficiency in RKN management. The combined use of P. chlamydosporia with an enhancer could help its ability to develop in soil and colonize roots, thereby increasing its efficiency against nematodes...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28852982/toxicological-effects-of-chemical-constituents-from-piper-against-the-environmental-burden-aedes-aegypti-liston-and-their-impact-on-non-target-toxicity-evaluation-against-biomonitoring-aquatic-insects
#2
Prabhakaran Vasantha-Srinivasan, Annamalai Thanigaivel, Edward-Sam Edwin, Athirstam Ponsankar, Sengottayan Senthil-Nathan, Selvaraj Selin-Rani, Kandaswamy Kalaivani, Wayne B Hunter, Veeramuthu Duraipandiyan, Naif Abdullah Al-Dhabi
Dengue is the most rapidly spreading mosquito-borne viral disease in the world. The mosquito, Aedes aegypti, also spreads Yellow fever, Chikungunya, and Zika virus. As the primary vector for dengue, Ae. aegypti now occurs in over 20 countries and is a serious concern with reports of increasing insecticide resistance. Developing new treatments to manage mosquitoes are needed. Formulation of crude volatile oil from Piper betle leaves (Pb-CVO) was evaluated as a potential treatment which showed larvicidal, ovipositional, and repellency effects...
August 29, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28841382/maternal-polycyclic-aromatic-hydrocarbon-pah-transfer-and-effects-on-offspring-of-copepods-exposed-to-dispersed-oil-with-and-without-oil-droplets
#3
Bjørn Henrik Hansen, Ann M Tarrant, Iurgi Salaberria, Dag Altin, Trond Nordtug, Ida Beathe Øverjordet
Copepods of the genus Calanus have the potential for accumulating lipophilic oil components due to their high lipid content and found to filter and ingest oil droplets during exposure. As female copepods produce eggs at the expense of lipid storage, there is a concern for transfer of lipophilic contaminants to offspring. To assess the potential for maternal transfer of oil components, ovigerous female copepods (Calanus finmarchicus) were exposed to filtered and unfiltered oil dispersions for 4 days, collected and eggs maintained in clean seawater and hatching and gene expression examined in hatched nauplii...
August 25, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28817948/effects-of-dietary-supplementation-of-resveratrol-on-performance-egg-quality-yolk-cholesterol-and-antioxidant-enzyme-activity-of-laying-hens
#4
Z H Feng, J G Gong, G X Zhao, X Lin, Y C Liu, K W Ma
1. This experiment was conducted to evaluate the effects of dietary supplementation of resveratrol on laying performance, egg quality, egg yolk cholesterol and antioxidant enzyme activities of laying hens. 2. A total of 360 Beijing PINK-1 laying hens (60 weeks old) were randomly distributed among five dietary treatments, each of which included 6 replicates of 12 hens. Dietary treatments were basal diet supplemented with 0 (control), 0.5, 1.0, 2.0 and 4.0 g/kg diet resveratrol. The study lasted for 9 weeks including 1 week of adaptation and 8 weeks of the main experimental period...
September 4, 2017: British Poultry Science
https://www.readbyqxmd.com/read/28755633/embryotoxic-effects-of-dissolved-okadaic-acid-on-the-development-of-longfin-yellowtail-seriola-rivoliana
#5
J Le Du, D Tovar-Ramírez, E J Núñez-Vázquez
In the context of global climate change where harmful algal blooms (HABs) might become more frequent and more severe, several studies have been conducted on the perturbation of embryonic development of marine animals by microalgal toxins. Okadaic acid (OA) and analogs (DSP toxins) produced by dinoflagellates of the genera Dynophysis and Prorocentrum are known to disturb embryogenesis. This study investigated the impact of dissolved DSP toxin (OA and Dinophysistoxin 1, DTX-1) exposure on embryo development of Longfin yellowtail Seriola rivoliana...
September 2017: Aquatic Toxicology
https://www.readbyqxmd.com/read/28740143/downregulation-of-alas1-by-nicarbazin-treatment-underlies-the-reduced-synthesis-of-protoporphyrin-ix-in-shell-gland-of-laying-hens
#6
Sami Samiullah, Juliet Roberts, Shu-Biao Wu
Shell colour is an important trait for eggs and an understanding of pigment deposition will assist potential management of egg shell colour loss. We demonstrated that nicarbazin feeding down-regulated ALAS1 and reduced protoporphyrin IX (PP IX) in both shell gland and eggshell, indicating the role of nicarbazin in inhibiting the synthesis of PP IX. Additionally, the expression levels of the genes did not show sequential upregulation in the same order of diurnal time-points (TP) during egg formation. The gene SLC25A38, responsible for transporting glycine from cytoplasm to mitochondria, and the gene ALAS1, encoding rate-limiting enzyme (delta-aminolevulinic acid synthase 1), had higher expression at 15 hr, as compared with 2, 5 and 23...
July 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28735972/pyrimidine-metabolism-in-schistosomes-a-comparison-with-other-parasites-and-the-search-for-potential-chemotherapeutic-targets
#7
REVIEW
Mahmoud H El Kouni
Schistosomes are responsible for the parasitic disease schistosomiasis, an acute and chronic parasitic ailment that affects >240 million people in 70 countries worldwide. It is the second most devastating parasitic disease after malaria. At least 200,000 deaths per year are associated with the disease. In the absence of the availability of vaccines, chemotherapy is the main stay for combating schistosomiasis. The antischistosomal arsenal is currently limited to a single drug, Praziquantel, which is quite effective with a single-day treatment and virtually no host-toxicity...
November 2017: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
https://www.readbyqxmd.com/read/28727112/effect-of-in-ovo-feeding-of-l-arginine-on-the-hatchability-growth-performance-gastrointestinal-hormones-and-jejunal-digestive-and-absorptive-capacity-of-posthatch-broilers
#8
T Gao, M Zhao, L Zhang, J Li, L Yu, P Lv, F Gao, G Zhou
This study was conducted to investigate the effects of in ovo feeding (IOF) of Arg solution on the hatchability, growth performance, gastrointestinal hormones, serum AA, activities of digestive enzymes, and mRNA expressions of sensing receptors and nutrient transporters in the jejunum of posthatch broilers. One thousand two hundred embryonated eggs with similar weight were randomly allocated to 5 groups consisting of 8 replicates of 40 eggs each. The 5 treatments were arranged as a noninjected control, a diluent-injected (0...
July 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28697990/avian-antibodies-igy-against-trypanosoma-cruzi-purification-and-characterization-studies
#9
Thirssa H Grando, Matheus D Baldissera, Mariângela F de Sá, Guilherme M do Carmo, Bianca Carolina Z Porto, Gisele S V Aguirre, Maria Isabel Azevedo, Francielli P K de Jesus, Janio M Santurio, Michele R Sagrillo, Lenita Moura Stefani, Silvia Gonzalez Monteiro
Trypanosoma cruzi is a flagellated protozoan belonging to the Trypanosomatidae family, the etiologic agent of Chagas disease. Currently, there is neither a licensed vaccine nor effective treatment, characterizing an unmet clinical need. The IgY refers to the egg yolk immunoglobulin (Y=yolk) and its production and use are subjects of many studies due to the diversity of its diagnostic and therapeutic applications. Several researchers have shown that the use of specific IgY may prevent and/or control infectious and parasitic diseases...
July 8, 2017: Journal of Immunological Methods
https://www.readbyqxmd.com/read/28666863/evaluating-the-molecular-physiological-and-behavioral-impacts-of-co2-narcosis-in-bumble-bees-bombus-impatiens
#10
Etya Amsalem, Christina M Grozinger
Exposure to carbon dioxide (CO2) has pleiotropic effects in many insect species, ranging from eliciting rapid behavioral responses such as attraction, to dramatic physiological changes, including ovary activation. In bumble bees, CO2 narcosis causes queens to bypass diapause and initiate egg laying, but its mode of action is not well-understood. Here, we evaluated the effects of CO2 narcosis on the behavior, physiology and immune function of virgin bumble bee queens (Bombus impatiens). We tested the hypothesis that CO2 induces these changes by stimulating oxidative stress response pathways...
August 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28597141/apparent-metabolizable-energy-value-of-whole-date-palm-phoenix-dactylifera-l-and-its-possible-use-as-a-feedstuff-for-aged-laying-hens
#11
Mohamad Hamed Salajegheh, Mostafa Yousef Elahi, Mohamad Salarmoini, Akbar Yaghobfar
This study was conducted to evaluate the feeding value of whole date palm (WDP) with and without enzyme supplementation on aged laying hen's performance. Apparent metabolizable energy value of WDP was determined by the total collection method using ten adult leghorn cockerels. WDP was substituted with a corn-soybean meal basal diet at 40% level, and then the metabolizable energy of this experimental diet and basal diet was determined. After that, a total number of 256 Bovanz 95-week-old hens were randomly allocated into eight groups consisting of four replicates of eight birds each, based on a 4 × 2 factorial arrangement of the treatments...
August 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28552793/artichoke-leaf-extract-protects-liver-of-schistosoma-mansoni-infected-mice-through-modulation-of-hepatic-stellate-cells-recruitment
#12
Shaimaa Ahmed Sharaf El-Deen, Reham Mustafa Brakat, Asmaa Shams El Dein Mohamed
Schistosomiasis is the second most common human parasitic disease worldwide. It is responsible for 300000 deaths per year. Liver fibrosis is the main pathology of schistosomiasis and its complications are the major cause of death in infected cases. Unfortunately, the therapeutic dose of praziquantel (PZQ) - the main drug treatment - doesn't markedly affect fibrosis. In the present study, antiparasitic and hepatoprotective properties of artichoke leaf extract (ALE) were tested on mice experimentally infected with Schistosoma mansoni (S...
July 2017: Experimental Parasitology
https://www.readbyqxmd.com/read/28505481/altered-development-oxidative-stress-and-dna-damage-in-leptodactylus-chaquensis-anura-leptodactylidae-larvae-exposed-to-poultry-litter
#13
L M Curi, P M Peltzer, C Martinuzzi, M A Attademo, S Seib, M F Simoniello, R C Lajmanovich
Poultry litter (PL), which is usually used as organic fertilizer, is a source of nutrients, metals, veterinary pharmaceuticals and bacterial pathogens, which, through runoff, may end up in the nearest aquatic ecosystems. In this study, Leptodactylus chaquensis at different development stages (eggs, larval stages 28 and 31 here referred to as stages I, II and III respectively) were exposed to PL test sediments as follows: 6.25% (T1), 12.5% (T2); 25% (T3); 50% (T4); 75% (T5); 100% PL (T6) and to dechlorinated water as control...
May 11, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28503900/effects-of-in-ovo-feeding-of-l-arginine-on-the-development-of-digestive-organs-intestinal-function-and-post-hatch-performance-of-broiler-embryos-and-hatchlings
#14
T Gao, M M Zhao, Y J Li, L Zhang, J L Li, L L Yu, F Gao, G H Zhou
This study was to investigate the effects of in ovo feeding (IOF) L-arginine (Arg) solution on the development of digestive organs, the duodenal mucosa of broiler embryos and hatchlings, and the growth performance of chicks during the first week post-hatch. A total of 720 fertilized eggs with similar weight were randomly allocated to three groups, consisting of eight replicates of 30 eggs each. Three treatments were arranged as non-injected control, diluent-injected (0.75% NaCl solution) group and Arg solution-injected group containing 1% Arg, dissolved in diluent...
May 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28488006/ingestion-of-a-single-2-3%C3%A2-mm-lead-pellet-by-laying-roller-pigeon-hens-reduces-egg-size-and-adversely-affects-f1-generation-hatchlings
#15
Robert J Williams, Lawrence V Tannenbaum, Susan M Williams, Steven D Holladay, Richard C Tuckfield, Ajay Sharma, Danny Joe Humphrey, Robert M Gogal
Many aquatic and terrestrial avian species inadvertently ingest lead (Pb) in the form of spent or fragmented ammunition, mistaking it for food or grit. Previous studies in our laboratory have shown that ingestion of even a single 45-mg pellet can significantly increase blood-Pb levels and significantly inhibit the enzyme delta aminolevulinic-acid dehydratase (δ-ALAD) for a period of greater than 4 weeks. In the current study, proven breeder pairs of domestic Roller pigeons were housed in individual cages...
May 9, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28485264/effects-of-nwt-03-an-egg-protein-hydrolysate-on-blood-pressure-in-normotensive-high-normotensive-and-mild-hypertensive-men-and-women-a-dose-finding-study
#16
RANDOMIZED CONTROLLED TRIAL
Jogchum Plat, Nadine Severins, Steve Morrison, Ronald P Mensink
Angiotensin-converting enzyme (ACE) inhibitors are important agents in blood pressure (BP) management. It was recently shown that the egg-protein hydrolysate NWT-03 inhibited ACE in Zucker diabetic fatty rats. We therefore designed a dose-finding study to assess the effects of 1, 2 and 5 g NWT-03 on daytime, 36-h, and night-time systolic and diastolic BP (SBP and DBP) in ninety-two generally healthy subjects with normal BP (n 29), high-normal BP (n 34) or mild hypertension (n 29). The study had a cross-over design with six treatment arms (1 g NWT-03 or placebo in period 1 and placebo or 1 g NWT-03 in period 2, 2 g NTW-03 or placebo in period 1 and placebo or 2 g NWT-03 in period 2, or 5 g NTW-03 or placebo in period 1 and placebo or 5 g NTW-03 in period 2)...
April 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28443982/enzyme-linked-immunosorbent-assay-for-diagnosis-of-amphimerus-spp-liver-fluke-infection-in-humans
#17
William Cevallos, Manuel Calvopiña, Victoria Nipáz, Belén Vicente-Santiago, Julio López-Albán, Pedro Fernández-Soto, Ángel Guevara, Antonio Muro
BACKGROUND: Amphimerus spp. is a liver fluke that infects humans and domestic animals. It is highly prevalent in some Ecuadorian communities. Currently, diagnosis is based on the microscopic observation of eggs in faeces, but this has variable sensitivity. More sensitive methods are needed for diagnostic testing. OBJECTIVE: The main objective of this work was to develop an enzyme-linked immunosorbent assay (ELISA) using crude antigens from Amphimerus spp. adult worms to detect anti-Amphimerus IgG in human sera...
May 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28431176/effect-of-melatonin-on-renewal-of-chicken-small-intestinal-mucosa
#18
J Li, R X Li, G Liu, C F Lv, Y L Mi, C Q Zhang
A higher concentration of melatonin (MEL) in the intestine - even more than that in the plasma and pineal gland - implies its putative important role in the gastrointestinal structural or functional regulation. However, little evidence has shown that MEL can regulate the physiological functions of the intestinal mucosa. In this study, fertilized chicken eggs were treated with MEL (0.1 to 10 μg/d) from embryonic d 12 (E12) to post-hatching d 6 (D6), and the small intestine samples were collected at D6 to determine the changes in mucosal construction and function...
April 20, 2017: Poultry Science
https://www.readbyqxmd.com/read/28428873/a-maize-landrace-that-emits-defense-volatiles-in-response-to%C3%A2-herbivore-eggs-possesses-a-strongly-inducible-terpene-synthase-gene
#19
Amanuel Tamiru, Toby J A Bruce, Annett Richter, Christine M Woodcock, Charles A O Midega, Jörg Degenhardt, Segenet Kelemu, John A Pickett, Zeyaur R Khan
Maize (Zea mays) emits volatile terpenes in response to insect feeding and egg deposition to defend itself against harmful pests. However, maize cultivars differ strongly in their ability to produce the defense signal. To further understand the agroecological role and underlying genetic mechanisms for variation in terpene emission among maize cultivars, we studied the production of an important signaling component (E)-caryophyllene in a South American maize landrace Braz1006 possessing stemborer Chilo partellus egg inducible defense trait, in comparison with the European maize line Delprim and North American inbred line B73...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28410665/impact-of-dietary-precursor-ala-versus-preformed-dha-on-fatty-acid-profiles-of-eggs-liver-and-adipose-tissue-and-expression-of-genes-associated-with-hepatic-lipid-metabolism-in-laying-hens
#20
M Neijat, P Eck, J D House
Dietary omega-3 polyunsaturated fatty acids (n-3 PUFA), including alpha-linolenic acid (ALA) and preformed longer chain PUFA (LCPUFA, particularly docosahexaenoic acid, DHA) differ in their egg LCPUFA enrichment efficiency. However, mechanisms leading to these differences are unclear. To this end, omega-3 PUFA contents in different lipid classes, including triacylglycerol (TAG) and total phospholipid (PL) in yolk, liver and adipose, as well as the expression of key hepatic enzymes in lipid metabolism were evaluated in laying hens in response to changes in dietary supply...
April 2017: Prostaglandins, Leukotrienes, and Essential Fatty Acids
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