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1. Microevolution or wide tolerance? Level of stress proteins in the beet armyworm Spodoptera eqigua hübner (Lepidoptera: Noctuidae) exposed to cadmium for over 150 generations

Author:
Tarnawska, Monika; Kafel, Alina; Augustyniak, Maria; Rost-Roszkowska, Magdalena; Babczyńska, Agnieszka
Source:
Ecotoxicology and environmental safety 2019 v.178 pp. 1-8
ISSN:
0147-6513
Subject:
midgut,   etc   ; Spodoptera exigua; cadmium; heat shock proteins; insects; larvae; protective effect; protein content; pupae; rearing;     Show all 10 Subjects
Abstract:
... The aim of this study was to investigate whether the cadmium tolerance developed in the beet armyworm Spodoptera exigua selected for over 150 generations may be related to synthesis of the stress proteins metallothioneins (Mts) and 70 kDa heat shock proteins (HSP70). To achieve this, six S. exigua strains (control, k), 150-generation Cd exposure strain (cd), and four 18-generation Cd exposure stra ...
DOI:
10.1016/j.ecoenv.2019.04.017

2. Borrelia burgdorferi chemotaxis toward tick protein Salp12 contributes to acquisition

Author:
Murfin, Kristen E.; Kleinbard, Ruby; Aydin, Merve; Salazar, Samuel A.; Fikrig, Erol
Source:
Ticks and tick-borne diseases 2019 v.10 no.5 pp. 1124-1134
ISSN:
1877-959X
Subject:
midgut,   etc   ; Borrelia burgdorferi; Ixodes scapularis; Lyme disease; chemoattractants; chemotaxis; immunization; salivary glands; ticks;     Show all 9 Subjects
Abstract:
... Lyme disease is a common tick-borne infection caused by the spirochete Borrelia burgdorferi sensu stricto (s.s.). B. burgdorferi s.s. may utilize chemotaxis, the directional migration towards or away from a chemical stimulus, for transmission, acquisition, and infection. However, the specific signals recognized by the spirochete for these events have not been defined. In this study, we identify an ...
DOI:
10.1016/j.ttbdis.2019.06.002

3. Key factors determining variations in RNA interference efficacy mediated by different double‐stranded RNA lengths in Tribolium castaneum

Author:
Wang, K.; Peng, Y.; Fu, W.; Shen, Z.; Han, Z.
Source:
Insect molecular biology 2019 v.28 no.2 pp. 235-245
ISSN:
0962-1075
Subject:
midgut,   etc   ; RNA interference; Tribolium castaneum; bioactive properties; double-stranded RNA; genes; hemolymph; in vitro studies; nucleases;     Show all 9 Subjects
Abstract:
... Double‐stranded RNA (dsRNA) length may affect RNA interference (RNAi) efficacy. Herein, variation in RNAi efficacy associated with dsRNA molecular length was confirmed via comparison of knockdown results following dsRNA injection into Tribolium castaneum. Through in vitro experiments with T. castaneum midgut, dsRNA accumulation in the midgut, degradation by midgut homogenates and persistence in ha ...
DOI:
10.1111/imb.12546

4. Luminal membranes in the midgut of the lace bug Corythucha ciliata

Author:
Nardi, James B.; Miller, Lou Ann; Bee, Charles Mark
Source:
Cell and tissue research 2019 v.375 no.3 pp. 685-696
ISSN:
0302-766X
Subject:
midgut,   etc   ; Corythucha ciliata; digestive enzymes; epithelial cells; epithelium; foregut; hindgut; imagos; insects; microvilli; plasma membrane; secretion;     Show all 12 Subjects
Abstract:
... The inordinately long midgut of hemipterans is devoid of peritrophic membranes described for many other insects. These membranes separate apical microvilli of midgut cells from contents of the lumen. In hemipterans, by contrast, contents of the lumen are separated from apical surfaces of midgut epithelia by secretion of additional plasma membranes (perimicrovillar membranes) containing digestive e ...
DOI:
10.1007/s00441-018-2943-6

5. Fine scale differences within the vagal neural crest for enteric nervous system formation

Author:
Simkin, Johanna E.; Zhang, Dongcheng; Stamp, Lincon A.; Newgreen, Donald F.
Source:
Developmental biology 2019 v.446 no.1 pp. 22-33
ISSN:
0012-1606
Subject:
midgut,   etc   ; cell movement; chicks; dyes; electroporation; fluorescence; foregut; hindgut; neural crest; neurons; plasmids; quails; tissues;     Show all 13 Subjects
Abstract:
... The enteric nervous system is mostly derived from vagal neural crest (NC) cells adjacent to somites (s)1–7. We used in ovo focal fluorescent vital dyes and focal electroporation of fluorophore-encoding plasmids in quail embryos to investigate NC cell migration to the foregut initially and later throughout the entire gut. NC cells of different somite-level origins were largely separate until reachi ...
DOI:
10.1016/j.ydbio.2018.11.007

6. Differential response to Cadmium exposure by expression of a two and a three-domain metallothionein isoform in the land winkle Pomatias elegans: Valuating the marine heritage of a land snail

Author:
Schmielau, Lara; Dvorak, Martin; Niederwanger, Michael; Dobieszewski, Nicole; Pedrini-Martha, Veronika; Ladurner, Peter; Pedregal, Jaime Rodríguez-Guerra; Maréchal, Jean-Didier; Dallinger, Reinhard
Source:
The Science of the total environment 2019 v.648 pp. 561-571
ISSN:
0048-9697
Subject:
midgut,   etc   ; Littorina littorea; ancestry; cadmium; evolution; habitats; littoral zone; metallothionein; resistance mechanisms; snails; stress tolerance;     Show all 11 Subjects
Abstract:
... Through evolution, marine snails have adapted several times independently to terrestrial life. A prime example for such transitions is the adaptation to terrestrial conditions in members of the gastropod clade of Littorinoidea (Caenogastropoda). Some species of this lineage like the periwinkle (Littorina littorea), live in intertidal habitats, where they are intermittently exposed to semi-terrestr ...
DOI:
10.1016/j.scitotenv.2018.07.426

7. Infection dynamics of Nosema ceranae in honey bee midgut and host cell apoptosis

Author:
Kurze, Christoph; Le Conte, Yves; Kryger, Per; Lewkowski, Oleg; Müller, Thomas; Moritz, Robin F.A.
Source:
Journal of invertebrate pathology 2018 v.154 pp. 1-4
ISSN:
0022-2011
Subject:
midgut,   etc   ; Apis mellifera; Nosema ceranae; apoptosis; epithelial cells; honey bees;     Show all 6 Subjects
Abstract:
... Nosema ceranae is an intracellular microsporidian parasite that infects epithelial cells of the honey bee (Apis mellifera) midgut. Previous studies have shown that Nosema may alter cell renewal and apoptosis in honey bees. We found that the amount of apoptotic cells progressively declines from the anterior towards posterior regions of the midgut in Nosema-infected sensitive bees. There was no such ...
DOI:
10.1016/j.jip.2018.03.008

8. Effects of antibiotics on biological activity of Cry1Ac in Bt-susceptible and Bt-resistant Helicoverpa armigera strains

Author:
Myint Khaing, Myint; Yang, Xianming; Zhao, Man; Zhang, Wanna; Wang, Bingjie; Wei, Jizhen; Liang, Gemei
Source:
Journal of invertebrate pathology 2018 v.151 pp. 197-200
ISSN:
0022-2011
Subject:
midgut,   etc   ; Helicoverpa armigera; antibiotics; bacteria; intestinal microorganisms; larvae; mortality; toxicity;     Show all 8 Subjects
Abstract:
... In this study, the results showed that the population of midgut bacteria and larval mortality due to Cry1Ac are significantly reduced in antibiotic-treated larvae from Bt-susceptible, -resistant and field-collected strains (96S, BtR, FS respectively) of Helicoverpa armigera. The percentage reduction of larval mortality with increasing concentrations of antibiotics was significantly different among ...
DOI:
10.1016/j.jip.2017.10.007

9. Chlorantraniliprole degenerates microvilli goblet cells of the Anticarsia gemmatalis (Lepidoptera: Noctuidae) midgut

Author:
Castro, Bárbara Monteiro de Castro e; Martínez, Luis Carlos; Plata-Rueda, Angelica; Soares, Marcus Alvarenga; Tavares, Wagner de Souza; Serrão, José Eduardo; Zanuncio, José Cola
Source:
Chemosphere 2019 v.229 pp. 525-528
ISSN:
0045-6535
Subject:
midgut,   etc   ; Anticarsia gemmatalis; goblet cells; homeostasis; insect larvae; insecticides; insects; lethal dose 50; metabolism; microvilli; nutrient uptake; transmission electron microscopy;     Show all 12 Subjects
Abstract:
... Anticarsia gemmatalis Hübner (Lepidoptera: Noctuidae) is mainly controlled with synthetic insecticides such as chlorantraniliprole. However, these compounds may affect non-target organs of insect metabolism. The objective of this study was to evaluate the toxic effect in the midgut goblet cells of A. gemmatalis caterpillars exposed to chlorantraniliprole. The midgut of these caterpillars, which in ...
DOI:
10.1016/j.chemosphere.2019.05.041

10. Identification and expression analysis of the Spodoptera exigua neuropeptidome under different physiological conditions

Author:
Llopis‐Giménez, A.; Han, Y.; Kim, Y.; Ros, V. I. D.; Herrero, S.
Source:
Insect molecular biology 2019 v.28 no.2 pp. 161-175
ISSN:
0962-1075
Subject:
midgut,   etc   ; Spodoptera exigua; adults; chemical communication; communications technology; insect pests; larvae; locomotion; neurohormones; neuropeptides; neurotransmitters; reproduction; starvation; tissues; transcriptomics;     Show all 15 Subjects
Abstract:
... Neuropeptides are small signalling molecules acting as neurohormones, neurotransmitters and neuromodulators. Being part of the chemical communication system between cells within an organism, they are involved in the regulation of different aspects of animal physiology and behaviour such as feeding, reproduction, development and locomotion. Transcriptomic data from larval and adult tissues have bee ...
DOI:
10.1111/imb.12535

11. Biological effects of gold nanoclusters are evaluated by using silkworm as a model animal

Author:
Ma, Lin; Andoh, Vivian; Liu, Haiyan; Song, Jiangchao; Wu, Guohua; Li, Long
Source:
Journal of materials science 2019 v.54 no.6 pp. 4997-5007
ISSN:
0022-2461
Subject:
midgut,   etc   ; Bombyx mori; bioactive properties; fat body; fibroins; gold; mechanical properties; nanogold; silk; silk glands; silkworms; thermal stability; thermogravimetry;     Show all 13 Subjects
Abstract:
... In this paper, Bombyx mori silkworm was used as a model animal to evaluate the biological effects of BSA-stabilized gold nanoclusters (BSA-Au NCs) via characterizing the growth status and silk properties of silkworms; the uptake of BSA-Au NCs by silkworms was realized by intravascular injection (the most dose of Au is 9.38 μg/silkworm). The results show that BSA-Au NCs have no obvious negative eff ...
DOI:
10.1007/s10853-018-03213-w

12. Establishment of a new microsporidian genus and species, Pseudoberwaldia daphniae (Microsporidia, Opisthosporidia), a common parasite of the Daphnia longispina complex in Europe

Author:
Vávra, Jiří; Fiala, Ivan; Krylová, Pavla; Petrusek, Adam; Hyliš, Miroslav
Source:
Journal of invertebrate pathology 2019 v.162 pp. 43-54
ISSN:
0022-2011
Subject:
midgut,   etc   ; Daphnia longispina; Microsporidia; Trichoptera; insects; intermediate hosts; new species; parasites; pathogens; phylogeny; plankton; ponds; spores; Europe;     Show all 14 Subjects
Abstract:
... Microsporidia are among the most common microparasites of cladocerans and have potentially significant impact on host populations. However, many of these pathogens are known only from molecular-based studies. We provide ultrastructural data supported by molecular phylogeny for a common microsporidium infecting the Daphnia longispina complex, important planktonic filter-feeders in reservoirs and po ...
DOI:
10.1016/j.jip.2019.02.004

13. Wolbachia Population in Vectors and Non-vectors: A Sustainable Approach Towards Dengue Control

Author:
Mohanty, Ipsita; Rath, Animesha; Swain, Swayam Prava; Pradhan, Nitika; Hazra, Rupenangshu Kumar
Source:
Current microbiology 2019 v.76 no.2 pp. 133-143
ISSN:
0343-8651
Subject:
midgut,   etc   ; Culicidae; Wolbachia; biological control agents; dengue; endosymbionts; females; males; phylogeny; salivary glands; superinfection; vector-borne diseases; viruses;     Show all 13 Subjects
Abstract:
... Wolbachia is gram negative obligate endosymbiont known for reproductive manipulation in the host. It is important to study the presence of natural Wolbachia in mosquitoes which can later help in understanding the effect of transfected strain on indigenous strain. With this view, the present study is undertaken to focus on the prevalence, diversity, infection frequencies, phylogeny and density of i ...
DOI:
10.1007/s00284-018-1596-8

14. Activity of the prophenoloxidase system and survival of triatomines infected with different Trypanosoma cruzi strains under different temperatures: understanding Chagas disease in the face of climate change

Author:
González-Rete, Berenice; Salazar-Schettino, Paz María; Bucio-Torres, Martha I.; Córdoba-Aguilar, Alex; Cabrera-Bravo, Margarita
Source:
Parasites & vectors 2019 v.12 no.1 pp. 219
ISSN:
1756-3305
Subject:
midgut,   etc   ; Chagas disease; Triatominae; Trypanosoma cruzi; climate change; disease vectors; enzyme activity; human diseases; insects; life history; monophenol monooxygenase; parasites; prophenoloxidase; rectum; survival rate; temperature; vectorial capacity;     Show all 17 Subjects
Abstract:
... BACKGROUND: Little is known about how human disease vectors will modify their life history patterns and survival capacity as a result of climate change. One case is that of Chagas disease, which has triatomine bugs and Trypanosoma cruzi as vectors and parasite, respectively. This work aimed to determine: (i) the activity of the prophenoloxidase system (prophenoloxidase and phenoloxidase activity, ...
DOI:
10.1186/s13071-019-3477-9

15. Generational conservation of composition and diversity of field-acquired midgut microbiota in Anopheles gambiae (sensu lato) during colonization in the laboratory

Author:
Akorli, Jewelna; Namaali, Philomena Asor; Ametsi, Godwin Williams; Egyirifa, Richardson Kwesi; Pels, Nana Adjoa Praba
Source:
Parasites & vectors 2019 v.12 no.1 pp. 27
ISSN:
1756-3305
Subject:
midgut,   etc   ; Anopheles gambiae; DNA; adults; bacterial communities; breeding sites; eggs; females; insect vectors; instars; intestinal microorganisms; laboratory experimentation; laboratory rearing; larvae; life history; metagenomics; pupae; tap water;     Show all 18 Subjects
Abstract:
... BACKGROUND: The gut microbiota is known to play a role in a mosquito vector’s life history, a subject of increasing research. Laboratory experiments are essential for such studies and require laboratory colonies. In this study, the conservation of field-obtained midgut microbiota was evaluated in laboratory-reared Anopheles gambiae (s.l.) mosquitoes continuously hatched in water from field breedin ...
DOI:
10.1186/s13071-019-3287-0

16. Screening for differentially expressed miRNAs in Aedes albopictus (Diptera: Culicidae) exposed to DENV-2 and their effect on replication of DENV-2 in C6/36 cells

Author:
Su, Jianxin; Wang, Gang; Li, Chunxiao; Xing, Dan; Yan, Ting; Zhu, Xiaojuan; Liu, Qinmei; Wu, Qun; Guo, Xiaoxia; Zhao, Tongyan
Source:
Parasites & vectors 2019 v.12 no.1 pp. 44
ISSN:
1756-3305
Subject:
midgut,   etc   ; Aedes albopictus; Dengue virus; blood; blood meal; gene expression regulation; microRNA; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; screening; transfection; vector competence; virus replication; viruses;     Show all 14 Subjects
Abstract:
... BACKGROUND: The mosquito Aedes albopictus is an important vector for dengue virus (DENV) transmission. The midgut is the first barrier to mosquito infection by DENV, and this barrier is a critical factor affecting the vector competence of the mosquito. However, the molecular mechanism of the interaction between midgut and virus is unknown. RESULTS: Six small libraries of Ae. albopictus midgut RNAs ...
DOI:
10.1186/s13071-018-3261-2

17. The effect of silencing immunity related genes on longevity in a naturally occurring Anopheles arabiensis mosquito population from southwest Ethiopia

Author:
Debalke, Serkadis; Habtewold, Tibebu; Duchateau, Luc; Christophides, George K.
Source:
Parasites & vectors 2019 v.12 no.1 pp. 174
ISSN:
1756-3305
Subject:
midgut,   etc   ; Anopheles arabiensis; antibiotics; blood; double-stranded RNA; genes; genetic engineering; homeostasis; hosts; immunity; immunization; insecticide resistance; intestinal microorganisms; longevity; malaria; mortality; probability; proteins; vaccines; vector control; Ethiopia;     Show all 21 Subjects
Abstract:
... BACKGROUND: Vector control remains the most important tool to prevent malaria transmission. However, it is now severely constrained by the appearance of physiological and behavioral insecticide resistance. Therefore, the development of new vector control tools is warranted. Such tools could include immunization of blood hosts of vector mosquitoes with mosquito proteins involved in midgut homeostas ...
DOI:
10.1186/s13071-019-3414-y

18. Characterization of scallop midgut gland certified reference material for quantification of diarrhetic shellfish toxins

Author:
Yarita, Takashi; Inagaki, Shinsuke; Miyamoto, Ayano; Yamazaki, Taichi; Kawaguchi, Migaku; Uchida, Hajime; Takatsu, Akiko; Suzuki, Toshiyuki
Source:
Food chemistry 2019 v.298 pp. 125011
ISSN:
0308-8146
Subject:
midgut,   etc   ; alkaline hydrolysis; confidence interval; liquid chromatography; okadaic acid; quality control; reference standards; scallops; shellfish; shellfish toxins; tandem mass spectrometry; uncertainty;     Show all 12 Subjects
Abstract:
... A scallop midgut gland certified reference material, NMIJ CRM 7520-a, was developed for validation and quality assurance during the inspection of shellfish for diarrhetic shellfish toxins. The candidate material was prepared by using naturally-toxic and nontoxic boiled midgut glands spiked with okadaic acid (OA). The homogeneity and stability of the material were found to be appropriate. For the c ...
DOI:
10.1016/j.foodchem.2019.125011

19. Effects of starvation and stocking density on the physiology of the male of the southern king crab Lithodes santolla

Author:
Sacristán, Hernán Javier; Di Salvatore, Pablo; Fernández-Gimenez, Analía Verónica; Lovrich, Gustavo Alejandro
Source:
Fisheries research 2019 v.218 pp. 83-93
ISSN:
0165-7836
Subject:
midgut,   etc   ; Lithodes santolla; carboxylic ester hydrolases; crabs; enzyme activity; food deprivation; glycogen; lipid peroxidation; lipids; males; marketing; mortality; muscles; oxidation; physiological state; starvation; stocking rate; summer; South America;     Show all 19 Subjects
Abstract:
... The southern king crab (SKC) Lithodes santolla is an important commercial species in southern South America. There is a greater need for availability of fresh and live crabs during the season of highest demand in summer (mainly December and January). Thus, this study aimed to determine the effects of starvation and stocking densities on the physiological status of male SKC to know whether SKC can ...
DOI:
10.1016/j.fishres.2019.05.006

20. Blood anticlotting activity of a Rhipicephalus microplus cathepsin L-like enzyme

Author:
Xavier, Marina Amaral; Tirloni, Lucas; Torquato, Ricardo; Tanaka, Aparecida; Pinto, Antônio F.M.; Diedrich, Jolene K.; Yates, John R.; da Silva Vaz, Itabajara; Seixas, Adriana; Termignoni, Carlos
Source:
Biochimie 2019 v.163 pp. 12-20
ISSN:
0300-9084
Subject:
midgut,   etc   ; Rhipicephalus microplus; blood; blood meal; cathepsin L; chromatography; digestion; dissociation; electrostatic interactions; fibrinogen; hemoglobin; hydrolysis; monitoring; pH; platelet aggregation; proteolysis; thrombin; ticks;     Show all 18 Subjects
Abstract:
... In parasites, cathepsins are implicated in mechanisms related to organism surveillance and host evasion. Some parasite cathepsins have fibrinogenolytic and fibrinolytic activity, suggesting that they may contribute to maintain blood meal fluidity for extended feeding periods. Here, it is shown that BmGTI (Rhipicephalus [Boophilus] microplus Gut Thrombin Inhibitor), a protein previously described a ...
DOI:
10.1016/j.biochi.2019.04.025