Qi R

References (8)

Title : JH degradation pathway participates in hormonal regulation of larval development of Bombyx mori following lambda-cyhalothrin exposure - Su_2023_Chemosphere_349_140871
Author(s) : Su Y , Wang W , Dai Y , Qi R , Gu H , Guo X , Liu X , Ren Y , Li F , Li B , Sun H
Ref : Chemosphere , 349 :140871 , 2023
Abstract : lambda-Cyhalothrin (lambda-cyh), a widely utilized pyrethroid insecticide, poses serious threats to non-target organisms due to its persistence nature in the environment. Exposure to low concentrations of lambda-cyh has been observed to result in prolonged larval development in Bombyx mori, leading to substantial financial losses in sericulture. The present study was undertaken to elucidate the underlying mechanisms for prolonged development caused by lambda-cyh (LC(10)) exposure. The results showed that the JH titer was significantly increased at 24 h of lambda-cyh exposure, and the JH interacting genes Methoprene-tolerant 2, Steroid Receptor Co-activator, Krppel-homolog 1, and JH binding proteins were also up-regulated. Although the target of rapamycin (Tor) genes were induced by lambda-cyh, the biosynthesis of JH in the corpora allata was not promoted. Notably, 13 JH degradation genes were found to be significantly down-regulated in the midgut of B. mori. The mRNA levels and enzyme activity assays indicated that lambda-cyh had inhibitory effects on JH esterase, JH epoxide hydrolase, and JH diol kinase (JHDK). Furthermore, the suppression of JHDK (KWMTBOMO01580) was further confirmed by both western blot and immunohistochemistry. This study has offered a comprehensive perspective on the mechanisms underlying the prolonged development caused by insecticides, and our results also hold significant implications for the safe production of sericulture.
ESTHER : Su_2023_Chemosphere_349_140871
PubMedSearch : Su_2023_Chemosphere_349_140871
PubMedID: 38056714

Title : Low concentration of indoxacarb interferes with the growth and development of silkworm by damaging the structure of midgut cells - Wang_2023_Pestic.Biochem.Physiol_195_105567
Author(s) : Wang W , Su Y , Liu X , Qi R , Li F , Li B , Sun H
Ref : Pestic Biochem Physiol , 195 :105567 , 2023
Abstract : As an important economic insect, Bombyx mori plays an essential role in the development of the agricultural economy. Indoxacarb, a novel sodium channel blocker insecticide, has been widely used for the control of various pests in agriculture and forestry, and its environmental pollution caused by flight control operations has seriously affected the safe production of sericulture in recent years. However, the lethal toxicity and adverse effects of indoxacarb on silkworm remain largely unknown. In this study, the toxicity of indoxacarb on the 5th instar larvae of silkworm was determined, with an LC(50) (72 h) of 2.07 mg/L. Short-term exposure (24 h) to a low concentration of indoxacarb (1/2 LC(50)) showed significantly reduced body weight and survival rate of silkworm larvae. In addition, indoxacarb also led to decreased cocoon weight and cocoon shell weight, but had no significant effects on pupation, adult eclosion, and oviposition. Histopathological and ultrastructural analysis indicated that indoxacarb could severely damage the structure of the midgut epithelial cells, and lead to physiological impairment of the midgut. A total of 3883 differentially expressed genes (DEGs) were identified by midgut transcriptome sequencing and functionally annotated using GO and KEGG. Furthermore, the transcription level and enzyme activity of the detoxification related genes were determined, and our results suggested that esterases (ESTs) might play a major role in metabolism of indoxacarb in the midgut of B. mori. Future studies to examine the detoxification or biotransformation function of candidate genes will greatly enhance our understanding of indoxacarb metabolism in B. mori. The results of this study provide a theoretical basis for elucidating the mechanism of toxic effects of indoxacarb on silkworm by interfering with the normal physiological functions of the midgut.
ESTHER : Wang_2023_Pestic.Biochem.Physiol_195_105567
PubMedSearch : Wang_2023_Pestic.Biochem.Physiol_195_105567
PubMedID: 37666598

Title : The Synergistic Effects of Heat Shock Protein 70 and Ginsenoside Rg1 against Tert-Butyl Hydroperoxide Damage Model In Vitro - Lu_2015_Oxid.Med.Cell.Longev_2015_437127
Author(s) : Lu D , Xu A , Mai H , Zhao J , Zhang C , Qi R , Wang H , Zhu L
Ref : Oxid Med Cell Longev , 2015 :437127 , 2015
Abstract : Neural stem cells (NSCs) transplanted is one of the hottest research to treat Alzheimer's disease (AD), but cholinergic neurons from stem cells were also susceptible to cell death which Heat shock protein 70 (HSP70) was affirmed to reverse. Related to cognitive impairment, cholinergic nervous cells should be investigated and ginsenoside Rg1 (G-Rg1) was considered to increase them. We chose tert-butyl hydroperoxide (t-BHP) damage model to study in vitro. Functional properties of our recombination plasmid pEGFP-C2-HSP70 were affirmed by SH-SY5Y cells. To opposite the transitory appearance of HSP70, NSCs used as the vectors of HSP70 gene overexpressed HSP70 for at least 7 days in vitro. After transfection for 3 days, G-Rg1 pretreatment for 4 hours, and coculture for 3 days, the expression of acetylcholinesterase (ChAT), synaptophysin, and the ratio of NeuN and GFAP were assessed by western blot; Morphological properties were detected by 3D reconstruction and immunofluorescence. ChAT was markedly improved in the groups contained G-Rg1. In coculture system, the ratio of neurons/astrocytes and the filaments of neurons were increased; apoptosis cells were decreased, compared to monotherapy (P < 0.05). In conclusion, we demonstrated that, as a safe cotreatment affirmed in vitro, overexpression of HSP70 in NSCs plus G-Rg1 promoted nervous cells regeneration from chronic oxidative damage.
ESTHER : Lu_2015_Oxid.Med.Cell.Longev_2015_437127
PubMedSearch : Lu_2015_Oxid.Med.Cell.Longev_2015_437127
PubMedID: 25685255

Title : Prenatal and early life arsenic exposure induced oxidative damage and altered activities and mRNA expressions of neurotransmitter metabolic enzymes in offspring rat brain - Xi_2010_J.Biochem.Mol.Toxicol_24_368
Author(s) : Xi S , Guo L , Qi R , Sun W , Jin Y , Sun G
Ref : J Biochem Mol Toxicol , 24 :368 , 2010
Abstract : To better understand the effect of arsenic on central nervous system by prenatal and early life exposure, the oxidative stress and neurotransmitter metabolic enzymes were determined in offspring rats' brain cortex and hippocampus. Forty-eight pregnant rats were randomly divided into four groups, each group was given free access to drinking water that contained 0, 10, 50, and 100 mg/L NaAsO(2) from gestation day 6 (GD 6) until postnatal day 42 (PND 42). Once pups were weaned, they started to drink the same arsenic (As)-containing water as the dams. The level of malondialdehyde in 100 mg/L As-exposed pup's brain on PND 0 and cortex on PND 28 and 42 were significantly higher than in the control group (p < 0.05). Reduced glutathione (GSH) levels showed a clear decreasing trend in pup's cortex and hippocampus on PND 42. Activity of acetylcholinesterase was significantly higher in 100 mg/L As-exposed pup's hippocampus than in control group on PND 28 and 42. mRNA expression of glutamate decarboxylase (GAD(65) and GAD(67)) in 100 mg/L As-exposed pup's cortex or hippocampus on PND 28 and 42 were significantly higher than in control (p < 0.05). These alterations in the neurotransmitters and reduced antioxidant defence may lead to neurobehavioral and learning and memory changes in offspring rats.
ESTHER : Xi_2010_J.Biochem.Mol.Toxicol_24_368
PubMedSearch : Xi_2010_J.Biochem.Mol.Toxicol_24_368
PubMedID: 20376865

Title : Spontaneous atherosclerosis in aged lipoprotein lipase-deficient mice with severe hypertriglyceridemia on a normal chow diet - Zhang_2008_Circ.Res_102_250
Author(s) : Zhang X , Qi R , Xian X , Yang F , Blackstein M , Deng X , Fan J , Ross C , Karasinska J , Hayden MR , Liu G
Ref : Circulation Research , 102 :250 , 2008
Abstract : Large-scale epidemiological studies have revealed a strong association between hypertriglyceridemia and coronary arteriosclerotic disease. However, there are conflicting reports whether the severe hypertriglyceridemia caused by lipoprotein lipase (LPL) deficiency is pro- or antiatherogenic. To determine the effect of LPL deficiency on atherosclerosis, we pursued long-term observation of the development of atherosclerotic lesions in an LPL gene deficient mouse model. At 4 months of age, homozygous LPL-deficient mice exhibited severe hypertriglyceridemia but no signs of aortic atherosclerotic lesions. At >15 months of age, these mice developed foam cell-rich atherosclerotic lesions at the aortic root, whereas wild-type and heterozygous mice were lesion-free at the same age. Further investigation revealed that plasma malondialdehyde levels in >15-month-old LPL-deficient mice were significantly higher than those of heterozygous and wild-type mice. Electron spin resonance analysis showed a marked increase in oxidative susceptibility of chylomicrons from the aged LPL-deficient mice. Incubation of chylomicrons from >15-month-old LPL-deficient mice with cultured human umbilical vein endothelial cells showed significantly increased upregulation of vascular cell adhesion molecule-1 and monocyte chemoattractant protein-1, markers of enhanced endothelial activation, and enhanced adherence of human THP-1 mononuclear cells. These results clearly demonstrate the occurrence of spontaneous atherosclerosis in aged LPL-deficient mice mediated by the oxidation of chylomicrons and the activation of vascular endothelial cells.
ESTHER : Zhang_2008_Circ.Res_102_250
PubMedSearch : Zhang_2008_Circ.Res_102_250
PubMedID: 18032735

Title : Crystallization and diffraction data of 1H-3-hydroxy-4-oxoquinoline 2,4-dioxygenase: a cofactor-free oxygenase of the alpha\/beta-hydrolase family - Qi_2007_Acta.Crystallogr.Sect.F.Struct.Biol.Cryst.Commun_63_378
Author(s) : Qi R , Fetzner S , Oakley AJ
Ref : Acta Crystallographica Sect F Struct Biol Cryst Commun , 63 :378 , 2007
Abstract : 1H-3-Hydroxy-4-oxoquinoline 2,4-dioxygenase (QDO) from Pseudomonas putida 33/1 catalyses the oxygenolysis of 1H-3-hydroxy-4-oxoquinoline to form N-formylanthranilic acid and carbon monoxide without the aid of cofactors. Both N-terminally His6-tagged and native QDO were overexpressed in Escherichia coli and purified by conventional chromatographic procedures. Untagged QDO, but not His6-tagged QDO, was crystallized by the vapour-diffusion method, giving hexagonal bipyramid crystals belonging to space group P6(1)22. Selenomethionine-containing native QDO was prepared and crystallized under identical conditions. The unit-cell parameters were a = b = 90.1, c = 168.6 A, alpha = beta = 90, gamma = 120 degrees. Using synchrotron radiation, these crystals diffract to 2.5 A. The expression, purification and crystallization of QDO are reported here.
ESTHER : Qi_2007_Acta.Crystallogr.Sect.F.Struct.Biol.Cryst.Commun_63_378
PubMedSearch : Qi_2007_Acta.Crystallogr.Sect.F.Struct.Biol.Cryst.Commun_63_378
PubMedID: 17565175

Title : The genome sequence of the malaria mosquito Anopheles gambiae - Holt_2002_Science_298_129
Author(s) : Holt RA , Subramanian GM , Halpern A , Sutton GG , Charlab R , Nusskern DR , Wincker P , Clark AG , Ribeiro JM , Wides R , Salzberg SL , Loftus B , Yandell M , Majoros WH , Rusch DB , Lai Z , Kraft CL , Abril JF , Anthouard V , Arensburger P , Atkinson PW , Baden H , de Berardinis V , Baldwin D , Benes V , Biedler J , Blass C , Bolanos R , Boscus D , Barnstead M , Cai S , Center A , Chaturverdi K , Christophides GK , Chrystal MA , Clamp M , Cravchik A , Curwen V , Dana A , Delcher A , Dew I , Evans CA , Flanigan M , Grundschober-Freimoser A , Friedli L , Gu Z , Guan P , Guigo R , Hillenmeyer ME , Hladun SL , Hogan JR , Hong YS , Hoover J , Jaillon O , Ke Z , Kodira C , Kokoza E , Koutsos A , Letunic I , Levitsky A , Liang Y , Lin JJ , Lobo NF , Lopez JR , Malek JA , McIntosh TC , Meister S , Miller J , Mobarry C , Mongin E , Murphy SD , O'Brochta DA , Pfannkoch C , Qi R , Regier MA , Remington K , Shao H , Sharakhova MV , Sitter CD , Shetty J , Smith TJ , Strong R , Sun J , Thomasova D , Ton LQ , Topalis P , Tu Z , Unger MF , Walenz B , Wang A , Wang J , Wang M , Wang X , Woodford KJ , Wortman JR , Wu M , Yao A , Zdobnov EM , Zhang H , Zhao Q , Zhao S , Zhu SC , Zhimulev I , Coluzzi M , della Torre A , Roth CW , Louis C , Kalush F , Mural RJ , Myers EW , Adams MD , Smith HO , Broder S , Gardner MJ , Fraser CM , Birney E , Bork P , Brey PT , Venter JC , Weissenbach J , Kafatos FC , Collins FH , Hoffman SL
Ref : Science , 298 :129 , 2002
Abstract : Anopheles gambiae is the principal vector of malaria, a disease that afflicts more than 500 million people and causes more than 1 million deaths each year. Tenfold shotgun sequence coverage was obtained from the PEST strain of A. gambiae and assembled into scaffolds that span 278 million base pairs. A total of 91% of the genome was organized in 303 scaffolds; the largest scaffold was 23.1 million base pairs. There was substantial genetic variation within this strain, and the apparent existence of two haplotypes of approximately equal frequency ("dual haplotypes") in a substantial fraction of the genome likely reflects the outbred nature of the PEST strain. The sequence produced a conservative inference of more than 400,000 single-nucleotide polymorphisms that showed a markedly bimodal density distribution. Analysis of the genome sequence revealed strong evidence for about 14,000 protein-encoding transcripts. Prominent expansions in specific families of proteins likely involved in cell adhesion and immunity were noted. An expressed sequence tag analysis of genes regulated by blood feeding provided insights into the physiological adaptations of a hematophagous insect.
ESTHER : Holt_2002_Science_298_129
PubMedSearch : Holt_2002_Science_298_129
PubMedID: 12364791
Gene_locus related to this paper: anoga-a0nb77 , anoga-a0nbp6 , anoga-a0neb7 , anoga-a0nei9 , anoga-a0nej0 , anoga-a0ngj1 , anoga-a7ut12 , anoga-a7uuz9 , anoga-ACHE1 , anoga-ACHE2 , anoga-agCG44620 , anoga-agCG44666 , anoga-agCG45273 , anoga-agCG45279 , anoga-agCG45511 , anoga-agCG46741 , anoga-agCG47651 , anoga-agCG47655 , anoga-agCG47661 , anoga-agCG47690 , anoga-agCG48797 , anoga-AGCG49362 , anoga-agCG49462 , anoga-agCG49870 , anoga-agCG49872 , anoga-agCG49876 , anoga-agCG50851 , anoga-agCG51879 , anoga-agCG52383 , anoga-agCG54954 , anoga-AGCG55021 , anoga-agCG55401 , anoga-agCG55408 , anoga-agCG56978 , anoga-ebiG239 , anoga-ebiG2660 , anoga-ebiG5718 , anoga-ebiG5974 , anoga-ebiG8504 , anoga-ebiG8742 , anoga-glita , anoga-nrtac , anoga-q5tpv0 , anoga-Q5TVS6 , anoga-q7pm39 , anoga-q7ppw9 , anoga-q7pq17 , anoga-Q7PQT0 , anoga-q7q8m4 , anoga-q7q626 , anoga-q7qa14 , anoga-q7qa52 , anoga-q7qal7 , anoga-q7qbj0 , anoga-f5hl20 , anoga-q7qkh2 , anoga-a0a1s4h1y7 , anoga-q7q887

Title : A comparison of whole-genome shotgun-derived mouse chromosome 16 and the human genome - Mural_2002_Science_296_1661
Author(s) : Mural RJ , Adams MD , Myers EW , Smith HO , Miklos GL , Wides R , Halpern A , Li PW , Sutton GG , Nadeau J , Salzberg SL , Holt RA , Kodira CD , Lu F , Chen L , Deng Z , Evangelista CC , Gan W , Heiman TJ , Li J , Li Z , Merkulov GV , Milshina NV , Naik AK , Qi R , Shue BC , Wang A , Wang J , Wang X , Yan X , Ye J , Yooseph S , Zhao Q , Zheng L , Zhu SC , Biddick K , Bolanos R , Delcher AL , Dew IM , Fasulo D , Flanigan MJ , Huson DH , Kravitz SA , Miller JR , Mobarry CM , Reinert K , Remington KA , Zhang Q , Zheng XH , Nusskern DR , Lai Z , Lei Y , Zhong W , Yao A , Guan P , Ji RR , Gu Z , Wang ZY , Zhong F , Xiao C , Chiang CC , Yandell M , Wortman JR , Amanatides PG , Hladun SL , Pratts EC , Johnson JE , Dodson KL , Woodford KJ , Evans CA , Gropman B , Rusch DB , Venter E , Wang M , Smith TJ , Houck JT , Tompkins DE , Haynes C , Jacob D , Chin SH , Allen DR , Dahlke CE , Sanders R , Li K , Liu X , Levitsky AA , Majoros WH , Chen Q , Xia AC , Lopez JR , Donnelly MT , Newman MH , Glodek A , Kraft CL , Nodell M , Ali F , An HJ , Baldwin-Pitts D , Beeson KY , Cai S , Carnes M , Carver A , Caulk PM , Center A , Chen YH , Cheng ML , Coyne MD , Crowder M , Danaher S , Davenport LB , Desilets R , Dietz SM , Doup L , Dullaghan P , Ferriera S , Fosler CR , Gire HC , Gluecksmann A , Gocayne JD , Gray J , Hart B , Haynes J , Hoover J , Howland T , Ibegwam C , Jalali M , Johns D , Kline L , Ma DS , MacCawley S , Magoon A , Mann F , May D , McIntosh TC , Mehta S , Moy L , Moy MC , Murphy BJ , Murphy SD , Nelson KA , Nuri Z , Parker KA , Prudhomme AC , Puri VN , Qureshi H , Raley JC , Reardon MS , Regier MA , Rogers YH , Romblad DL , Schutz J , Scott JL , Scott R , Sitter CD , Smallwood M , Sprague AC , Stewart E , Strong RV , Suh E , Sylvester K , Thomas R , Tint NN , Tsonis C , Wang G , Williams MS , Williams SM , Windsor SM , Wolfe K , Wu MM , Zaveri J , Chaturvedi K , Gabrielian AE , Ke Z , Sun J , Subramanian G , Venter JC , Pfannkoch CM , Barnstead M , Stephenson LD
Ref : Science , 296 :1661 , 2002
Abstract : The high degree of similarity between the mouse and human genomes is demonstrated through analysis of the sequence of mouse chromosome 16 (Mmu 16), which was obtained as part of a whole-genome shotgun assembly of the mouse genome. The mouse genome is about 10% smaller than the human genome, owing to a lower repetitive DNA content. Comparison of the structure and protein-coding potential of Mmu 16 with that of the homologous segments of the human genome identifies regions of conserved synteny with human chromosomes (Hsa) 3, 8, 12, 16, 21, and 22. Gene content and order are highly conserved between Mmu 16 and the syntenic blocks of the human genome. Of the 731 predicted genes on Mmu 16, 509 align with orthologs on the corresponding portions of the human genome, 44 are likely paralogous to these genes, and 164 genes have homologs elsewhere in the human genome; there are 14 genes for which we could find no human counterpart.
ESTHER : Mural_2002_Science_296_1661
PubMedSearch : Mural_2002_Science_296_1661
PubMedID: 12040188
Gene_locus related to this paper: mouse-ABH15 , mouse-Ces3b , mouse-Ces4a , mouse-dpp4 , mouse-FAP , mouse-Lipg , mouse-Q8C1A9 , mouse-rbbp9 , mouse-SERHL , mouse-SPG21 , mouse-w4vsp6