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https://www.readbyqxmd.com/read/28213320/comparative-analysis-of-mosquito-diptera-culicidae-aedes-aegypti-liston-responses-to-the-insecticide-temephos-and-plant-derived-essential-oil-derived-from-piper-betle-l
#1
Prabhakaran Vasantha-Srinivasan, Sengottayan Senthil-Nathan, Athirstam Ponsankar, Annamalai Thanigaivel, Edward-Sam Edwin, Selvaraj Selin-Rani, Muthiah Chellappandian, Venkatraman Pradeepa, Jalasteen Lija-Escaline, Kandaswamy Kalaivani, Wayne B Hunter, Veeramuthu Duraipandiyan, Naif Abdullah Al-Dhabi
Resistance to treatments with Temephos or plant derived oil, Pb-CVO, between a field collected Wild Strain (WS) and a susceptible Laboratory Strain (LS) of Ae. aegypti were measured. The Temephos (0.1mg/L) showed the greatest percentage of mosquito mortality compared to Pb-CVO (1.5mg/L) in LS Ae. aegypti. However, WS Ae. aegypti was not significantly affected by Temephos (0.1mg/L) treatment compare to the Pb-CVO (1.5mg/L). However, both strains (LS and WS) when treated with Pb-CVO (1.5mg/L) displayed steady larval mortality rate across all instars...
February 14, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28210795/observational-comparisons-of-intestinal-microbiota-characterizations-immune-enzyme-activities-and-muscle-amino-acid-compositions-of-loach-in-paddy-fields-and-ponds-in-sichuan-province
#2
Song Yang, Yuanliang Duan, Jie Zhang, Jian Zhou, Ya Liu, Jun Du, Liulan Zhao, Zongjun Du, Shuaishuai Han
A balanced intestinal microbial ecosystem is crucial for the growth and health of animals because it can influence the digestion and absorption of nutrients in the intestine. Different culture conditions may change the ecology of microbial in intestine and thus affect the overall growth performance of an animal. In this study, we compared intestinal morphologies, microbiota characterizations, immune enzyme activities, and muscle amino acid compositions of loach cultured in paddy fields and ponds. The fish were fed with the same diets from May 5 to November 5 (2015) in three paddy or ponds...
February 16, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28209211/comparative-expression-profile-of-micrornas-in-anopheles-anthropophagus-midgut-after-blood-feeding-and-plasmodium-infection
#3
Wenquan Liu, Zhenhua Hao, Liyang Huang, Lingzi Chen, Qimei Wei, Liya Cai, Shaohui Liang
BACKGROUND: Anopheles anthropophagus is one of the major vectors of malaria in Asia. MicroRNAs (miRNAs) play important roles in cell development and differentiation as well as in the cellular response to stress and infection. In a former study, we have investigated the global miRNA profiles in relation to sex in An. anthropophagus. However, the miRNAs contributing to the blood-feeding and infection with Plasmodium are still unknown. METHODS: High-throughput sequencing was performed to identify miRNA profiles of An...
February 16, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28203088/peptide-receptor-radionuclide-therapy-in-the-management-of-gastrointestinal-neuroendocrine-tumors-efficacy-profile-safety-and-quality-of-life
#4
REVIEW
Stefano Severi, Ilaria Grassi, Silvia Nicolini, Maddalena Sansovini, Alberto Bongiovanni, Giovanni Paganelli
Peptide receptor radionuclide therapy (PRRT), developed over the last two decades, is carried out using radiopharmaceuticals such as 90Y-DOTA-Tyr3-octreotide and 177Lu-DOTA-Tyr3-octreotate (177Lu-Dotatate). These radiocompounds are obtained by labeling a synthetic somatostatin analog with a β-emitting radioisotope. The compounds differ from each other in terms of their energetic features (due to the radionuclide) and peptide receptor affinity (due to the analog) but share the common characteristic of binding specific membrane somatostatin receptors that are (generally) overexpressed in neuroendocrine neoplasms (NENs) and their metastases...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28193870/disruption-of-quercetin-metabolism-by-fungicide-affects-energy-production-in-honey-bees-apis-mellifera
#5
Wenfu Mao, Mary A Schuler, May R Berenbaum
Cytochrome P450 monooxygenases (P450) in the honey bee, Apis mellifera, detoxify phytochemicals in honey and pollen. The flavonol quercetin is found ubiquitously and abundantly in pollen and frequently at lower concentrations in honey. Worker jelly consumed during the first 3 d of larval development typically contains flavonols at very low levels, however. RNA-Seq analysis of gene expression in neonates reared for three days on diets with and without quercetin revealed that, in addition to up-regulating multiple detoxifying P450 genes, quercetin is a negative transcriptional regulator of mitochondrion-related nuclear genes and genes encoding subunits of complexes I, III, IV, and V in the oxidative phosphorylation pathway...
February 13, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28188867/bombyx-mori-serpin6-regulates-prophenoloxidase-activity-and-the-expression-of-antimicrobial-proteins
#6
Bing Li, Hai-Zhong Yu, Chong-Jun Ye, Yan Ma, Xing Li, Tao Fan, Fu-Sheng Chen, Jia-Ping Xu
Serpins are a family of serine protease inhibitors that are found widely in insects. They play an important role in insect physiological responses, such as innate immunity and development. In this study, we obtained the Bombyx mori serpin6 (BmSerpin6) sequence from National Center for Biotechnology Information (NCBI) and the silkworm genome database (SilkDB). Reverse transcription PCR (RT-PCR) results showed that BmSerpin6 was expressed highly in hemocytes, the midgut, and the fat body. After challenging with Micrococcus luteus (Mi) and Serratia marcescens (Sm), the BmSerpin6 expression level was induced significantly...
February 8, 2017: Gene
https://www.readbyqxmd.com/read/28188726/the-roles-of-v-type-h-atpase-and-na-k-atpase-in-energizing-k-and-h-transport-in-larval-drosophila-gut-epithelia
#7
Natalie M D'Silva, Andrew Donini, Michael J O'Donnell
We analyzed V- type H(+)-ATPase (VA) and Na(+)/K(+)-ATPase (NKA) along the caeca and midgut of third instar Drosophila larvae using immunohistochemistry and ATPase activity assays. Corresponding H(+) and K(+) fluxes were characterized using the Scanning Ion-Selective Electrode Technique (SIET), and the roles of transport ATPases in energizing ion transport across the larval gut were investigated by basal application of bafilomycin, a VA inhibitor, and ouabain, a NKA inhibitor. Addition of bafilomycin led to a decrease in H(+) absorption along the caeca and midgut except at the copper cells and large flat cell zone of the middle midgut...
February 7, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28187878/embryonic-origin-of-primary-colon-cancer-predicts-survival-in-patients-undergoing-ablation-for-colorectal-liver-metastases
#8
S Yamashita, B C Odisio, S Y Huang, S E Kopetz, K Ahrar, Y S Chun, C Conrad, T A Aloia, S Gupta, S Harmoush, M E Hicks, J-N Vauthey
BACKGROUND: In patients with primary colorectal cancer (CRC) or unresectable metastatic CRC, midgut embryonic origin is associated with worse prognosis. The impact of embryonic origin on survival after ablation of colorectal liver metastases (CLM) is unclear. METHODS: We identified 74 patients with CLM who underwent percutaneous ablation during 2004-2015. Survival and recurrence after ablation of CLM from midgut origin (n = 18) and hindgut origin (n = 56) were analyzed...
January 29, 2017: European Journal of Surgical Oncology
https://www.readbyqxmd.com/read/28187831/functional-analysis-of-five-trypsin-like-protease-genes-in-the-oriental-fruit-fly-bactrocera-dorsalis-diptera-tephritidae
#9
Ya-Li Li, Ming-Zhe Hou, Guang-Mao Shen, Xue-Ping Lu, Zhe Wang, Fu-Xian Jia, Jin-Jun Wang, Wei Dou
Insect midgut proteases catalyze the release of free amino acids from dietary proteins and are essential for insect normal development. To date, digestive proteases as potential candidates have made great progress in pest control. To clarify the function of trypsin-like protease genes in the digestive system of Bactrocera dorsalis, a serious pest of a wide range of tropical and subtropical fruit and vegetable crops, five trypsin genes (BdTry1, BdTry2, BdTry3, BdTry4 and BdTry5) were identified from transcriptome dataset, and the effects of feeding condition on their expression levels were examined subsequently...
March 2017: Pesticide Biochemistry and Physiology
https://www.readbyqxmd.com/read/28185632/risk-factors-and-outcomes-of-tapering-surgery-for-small-intestinal-dilatation-in-pediatric-short-bowel-syndrome
#10
Maria Hukkinen, Reetta Kivisaari, Antti Koivusalo, Mikko P Pakarinen
BACKGROUND: In remains unclear why in some short bowel syndrome (SBS) patients, the remaining small bowel (SB) dilates excessively leading to requirement of tapering surgery. METHODS: Among SBS children, we retrospectively analyzed risk factors for tapering surgery with logistic regression and compared the outcome of operated patients (n=16) to those managed conservatively (n=44) with Cox proportional hazards regression. RESULTS: SBS was caused by necrotizing enterocolitis (NEC) (n=31), SB atresia (SBA) (n=13), midgut volvulus (n=12), or gastroschisis (n=4)...
January 31, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28182298/looking-into-the-puparium-micro-ct-visualization-of-the-internal-morphological-changes-during-metamorphosis-of-the-blow-fly-calliphora-vicina-with-the-first-quantitative-analysis-of-organ-development-in-cyclorrhaphous-dipterans
#11
Daniel Martín-Vega, Thomas J Simonsen, Martin J R Hall
Metamorphosis of cyclorrhaphous flies takes place inside a barrel-like puparium, formed by the shrinking, hardening and darkening of the third-instar larval cuticle. The opacity of this structure hampers the visualization of the morphological changes occurring inside and therefore a full understanding of the metamorphosis process. Here, we use micro-computed tomography (micro-CT) to describe the internal morphological changes that occur during metamorphosis of the blow fly, Calliphora vicina Robineau-Desvoidy 1830 (Diptera: Calliphoridae) at a greater temporal resolution than anything hitherto published...
February 9, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28182093/utility-of-the-ct-scan-in-diagnosing-midgut-volvulus-in-patients-with-chronic-abdominal-pain
#12
Ehsan Shahverdi, Mehdi Morshedi, Maryam Allahverdi Khani, Mohammad Baradaran Jamili, Fatemeh Shafizadeh Barmi
Symptomatic intestinal malrotation first presenting in the adults is rare. Midgut volvulus is the most common complication of malrotation in the adults. Because of more differential diagnosis, Computed Tomography (CT) scan can play an important role in the evaluation of patients with this abnormality. The whirl pattern around the superior mesenteric artery found on CT scan in patients with midgut volvulus is pathognomonic and diagnostic. We describe a case of intestinal malrotation complicated by midgut volvulus in an adult patient...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28179423/xanthine-dehydrogenase-1-silencing-in-aedes-aegypti-mosquitoes-promotes-a-blood-feeding-induced-adulticidal-activity
#13
Jun Isoe, Natthida Petchampai, Yurika E Isoe, Katrina Co, Stacy Mazzalupo, Patricia Y Scaraffia
Aedesaegypti has 2 genes encoding xanthine dehydrogenase (XDH). We analyzed XDH1 and XDH2 gene expression by real-time quantitative PCR in tissues from sugar- and blood-fed females. Differential XDH1 and XDH2 gene expression was observed in tissues dissected throughout a time course. We next exposed females to blood meals supplemented with allopurinol, a well-characterized XDH inhibitor. We also tested the effects of injecting double-stranded RNA (dsRNA) against XDH1, XDH2, or both. Disruption of XDH by allopurinol or XDH1 by RNA interference significantly affected mosquito survival, causing a disruption in blood digestion, excretion, oviposition, and reproduction...
February 8, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28178568/midgut-derived-activin-regulates-glucagon-like-action-in-the-fat-body-and-glycemic-control
#14
Wei Song, Daojun Cheng, Shangyu Hong, Benoit Sappe, Yanhui Hu, Neil Wei, Changqi Zhu, Michael B O'Connor, Pavlos Pissios, Norbert Perrimon
While high-caloric diet impairs insulin response to cause hyperglycemia, whether and how counter-regulatory hormones are modulated by high-caloric diet is largely unknown. We find that enhanced response of Drosophila adipokinetic hormone (AKH, the glucagon homolog) in the fat body is essential for hyperglycemia associated with a chronic high-sugar diet. We show that the activin type I receptor Baboon (Babo) autonomously increases AKH signaling without affecting insulin signaling in the fat body via, at least, increase of Akh receptor (AkhR) expression...
February 7, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28177775/cellular-stress-associated-with-plasmodium-berghei-ookinete-differentiation
#15
Josefina Duran-Bedolla, Juan Tellez-Sosa, Humberto Valdovinos-Torres, Natalia Pavon, Mabel Buelna-Chontal, Angel Tello-Lopez, Rocio Argotte-Ramos, Mario Henry Rodriguez, Maria Carmen Rodriguez
For malaria transmission, Plasmodium parasites must develop in the mosquito vector. Oxidative stress in the insect midgut, triggered by environmental changes (e.g., pH and temperature), influences the cellular signaling of parasites involved in differentiation from gametocytes to mobil ookinetes. It activates the homeostatic response to stress characterized by the phosphorylation eIF2, the attenuation of protein synthesis and the transcription of genes participating in the unfolded protein response and antioxidant processes, forming a part of an integrated stress response (ISR)...
August 12, 2016: Biochemistry and Cell Biology, Biochimie et Biologie Cellulaire
https://www.readbyqxmd.com/read/28175946/integrin-beta-and-receptor-for-activated-protein-kinase-c-are-involved-in-the-cell-entry-of-bombyx-mori-cypovirus
#16
Yiling Zhang, Guangli Cao, Liyuan Zhu, Fei Chen, Mian Sahib Zar, Simei Wang, Xiaolong Hu, Yuhong Wei, Renyu Xue, Chengliang Gong
Receptor-mediated endocytosis using a β1 integrin-dependent internalization was considered as the primary mechanism for the initiation of mammalian reovirus infection. Bombyx mori cypovirus (BmCPV) is a member of Reoviridae family which mainly infects the midgut epithelium of silkworm; the cell entry of BmCPV is poorly explored. In this study, co-immunoprecipitation (Co-IP), virus overlay protein binding assay (VOPBA), and BmCPV-protein interaction on the polyvinylidene difluoride membrane (BmCPV-PI-PVDF) methods were employed to screen the interacting proteins of BmCPV, and several proteins including integrin beta and receptor for activated protein kinase C (RACK1) were identified as the candidate interacting proteins for establishing the infection of BmCPV...
February 7, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28159012/identification-of-micrornas-expressed-in-the-midgut-of-aedes-albopictus-during-dengue-infection
#17
Jianxin Su, Chunxiao Li, Yingmei Zhang, Ting Yan, Xiaojuan Zhu, Minghui Zhao, Dan Xing, Yande Dong, Xiaoxia Guo, Tongyan Zhao
BACKGROUND: The midgut is the first barrier to dengue virus (DENV) infections of mosquitoes and therefore is a major bottleneck for the subsequent development of vector competence. However, the molecular mechanisms responsible for this barrier are unknown. RESULTS: We constructed three small RNA libraries from the midguts of adult Aedes albopictus females that had been fed on either sugar solution, an uninfected blood meal, or a blood meal infected with DENV-2, and112 conserved microRNAs represented by 173 miRNA sequences were identified, with 34 novel microRNAs predicted by Mireap, RNAfold and Sfold software...
February 3, 2017: Parasites & Vectors
https://www.readbyqxmd.com/read/28153644/cathepsin-l-participates-in-the-remodeling-of-the-midgut-through-dissociation-of-midgut-cells-and-activation-of-apoptosis-via-caspase-1
#18
Cui Yang, Xian-Wu Lin, Wei-Hua Xu
The larval midgut in holometabolous insects must undergo a remodeling process during metamorphosis to form the pupal-adult midgut. However, the molecular mechanism of larval midgut cell dissociation remains unknown. Here, we show that the expression and activity of Helicoverpa armigera cathepsin L (Har-CatL) are high in the midgut at the mid-late stage of the 6th-instar larvae and are responsive to the upstream hormone ecdysone. Immunocytochemistry shows that signals for Har-CatL-like are localized in midgut cells, and an inhibitor experiment demonstrates that Har-CatL functions in the dissociation of midgut epithelial cells...
January 31, 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28152405/evaluation-of-larvicidal-activity-and-ecotoxicity-of-linalool-methyl-cinnamate-and-methyl-cinnamate-linalool-in-combination-against-aedes-aegypti
#19
Gislene M Fujiwara, Vinícius Annies, Camila F de Oliveira, Ricardo A Lara, Maria M Gabriel, Fernando C M Betim, Jéssica M Nadal, Paulo V Farago, Josiane F G Dias, Obdulio G Miguel, Marilis D Miguel, Francisco A Marques, Sandra M W Zanin
The frequent use of synthetic pesticides to control Aedes aegypti population can lead to environmental and/or human contamination and the emergence of resistant insects. Linalool and methyl cinnamate are presented as an alternative to the synthetic pesticides, since they can exhibit larvicidal, repellent and/or insecticidal activity and are considered safe for use. The aim of this study was to evaluate the larvicidal activity of methyl cinnamate, linalool and methyl cinnamate/linalool in combination (MC-L) (1:4 ratio, respectively) against Aedes aegypti...
January 30, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28152011/dengue-virus-serotype-2-infection-alters-midgut-and-carcass-gene-expression-in-the-asian-tiger-mosquito-aedes-albopictus
#20
Hitoshi Tsujimoto, Kathryn A Hanley, Anitha Sundararajan, Nicholas P Devitt, Faye D Schilkey, Immo A Hansen
BACKGROUND: The Asian tiger mosquito, Aedes albopictus is currently an important vector for dengue, chikungunya and Zika virus, and its role in transmission of arthropod-borne viruses (arboviruses) may increase in the future due to its ability to colonize temperate regions. In contrast to Aedes aegypti, the dominant vector of dengue, chikungunya and Zika virus, genetic responses of Ae. albopictus upon infection with an arbovirus are not well characterized. Here we present a study of the changes in transcript expression in Ae...
2017: PloS One
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