The role of autophagy in the midgut epithelium of Eubranchipus grubii (Crustacea, Branchiopoda, Anostraca)

Rost‐Roszkowska, Magdalena; Vilímová, Jitka; Sosinka, A.; Skudlik, J.; Franzetti, Eleonora

doi:10.1016/j.asd.2012.01.001

Cited by 34 publications

(34 citation statements)

References 48 publications

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“…The digestive cells of the intestine in N . heteropoda have an ultrastructure that is characteristic of invertebrate cells that take part in the synthesis and secretion of enzymes, and that have a well-developed endoplasmic reticulum [ 4 , 35 – 37 ]. Additionally, two types of secretions occur in the digestive cells—apocrine and microapocrine.…”

Section: Discussionmentioning

confidence: 99%

“…However, the fibrillar cells in the hepatopancreatic tubules have numerous cisterns of the endoplasmic reticulum, which gives them a fibrillar appearance, which was not observed in digestive cells of the species examined. However, the data connected with the ultrastructure of the digestive cells of the intestine in crustaceans are rather general [ 3 , 4 ], while this paper describes their precise ultrastructure. In conclusion, the digestive cells described in N .…”

Section: Discussionmentioning

confidence: 99%

“…While the fore- and hindgut are lined with the cuticle, the midgut is devoid of any sheets on its surface or may be covered with the peritrophic membrane [ 1 ]. The midgut (the endodermal region of the digestive system) in Crustacea may be a long tube that is devoid of any diverticles and caeca [ 2 – 4 ] or it may have anterior caeca [ 5 ]. It can be differentiated into the midgut (intestine) and a large lobular gland called the hepatopancreas [ 6 – 8 ] or the midgut may be replaced by a large hepatopancreas [ 6 – 8 ].…”

Section: Introductionmentioning

confidence: 99%

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Structure and Ultrastructure of the Endodermal Region of the Alimentary Tract in the Freshwater Shrimp Neocaridina heteropoda (Crustacea, Malacostraca)

et al. 2015

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The freshwater shrimp Neocaridina heteropoda (Crustacea, Malacostraca, Decapoda) originates from Asia and is one of the species that is widely available all over the world because it is the most popular shrimp that is bred in aquaria. The structure and the ultrastructure of the midgut have been described using X-ray microtomography, transmission electron microscopy, light and fluorescence microscopes. The endodermal region of the alimentary system in N. heteropoda consists of an intestine and a hepatopancreas. No differences were observed in the structure and ultrastructure of males and females of the shrimp that were examined. The intestine is a tube-shaped organ and the hepatopancreas is composed of two large diverticles that are divided into the blind-end tubules. Hepatopancreatic tubules have three distinct zones – proximal, medial and distal. Among the epithelial cells of the intestine, two types of cells were distinguished – D and E-cells, while three types of cells were observed in the epithelium of the hepatopancreas – F, B and E-cells. Our studies showed that the regionalization in the activity of cells occurs along the length of the hepatopancreatic tubules. The role and ultrastructure of all types of epithelial cells are discussed, with the special emphasis on the function of the E-cells, which are the midgut regenerative cells. Additionally, we present the first report on the existence of an intercellular junction that is connected with the E-cells of Crustacea.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Structure and Ultrastructure of the Endodermal Region of the Alimentary Tract in the Freshwater Shrimp Neocaridina heteropoda (Crustacea, Malacostraca)

et al. 2015

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“…Imbalanced intestinal microbiota are associated with defects in autophagy and excessive activation of immune responses (Yang et al, ). In arthropods and tardigrades, autophagy of microbes commonly occurs in midgut cells as a measure to ensure survival of host cells (Rost‐Roszkowska, Vilimova, et al, ; Rost‐Roszkowska, Poprawa, & Kaczmarek, ).…”

Section: Discussionmentioning

confidence: 99%

Interfaces between microbes and membranes of host epithelial cells in hemipteran midguts

Nardi

Miller

Bee

2019

Journal of Morphology

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Certain families of plant‐feeding insects in the order Hemiptera (infraorder Pentatomomorpha) have established symbiotic relationships with microbes that inhabit specific pouches (caeca) of their midgut epithelium. The placement of these caeca in a well‐delineated region at the most posterior end of the midgut bordering the hindgut is conserved in these families; in situ the convoluted midgut is predictably folded so that this caecal region lies adjacent to the anterior‐most region of the midgut. Depending on the hemipteran family, caeca vary in their number and configuration at a given anterior–posterior location. At the host‐microbe interface, epithelial plasma membranes of midgut epithelial cells interact with nonself antigens of microbial surfaces. In the different hemipteran species examined, a continuum of interactions is observed between microbes and host membranes. Bacteria can exist as free living cells within the midgut lumen without contacting host membranes while other host cells physically interact extensively with microbial surfaces by extending numerous processes that interdigitate with microbes; and, in many instances, processes completely envelope the microbes. The host cells can embrace the foreign microbes, completely enveloping each with a single host membrane or sometimes enveloping each with the two additional host membranes of a phagosome.

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“…Numerous ultrastructural alterations of mitochondria have been described as being caused by starvation [20,21] or even as being induced by other stressors [22–25]. During their degeneration, mitochondria might be swollen or contracted, their cristae may shorten and eventually disappear.…”

Section: Introductionmentioning

confidence: 99%

The effect of starvation and re-feeding on mitochondrial potential in the midgut of Neocaridina davidi (Crustacea, Malacostraca)

Włodarczyk¹,

Sonakowska²,

Kamińska³

et al. 2017

PLoS ONE

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The midgut in the freshwater shrimp Neocaridina davidi (previously named N. heteropoda) (Crustacea, Malacostraca) is composed of a tube-shaped intestine and a large hepatopancreas that is formed by numerous blind-ended tubules. The precise structure and ultrastructure of these regions were presented in our previous papers, while here we focused on the ultrastructural changes that occurred in the midgut epithelial cells (D-cells in the intestine, B- and F- cells in the hepatopancreas) after long-term starvation and re-feeding. We used transmission electron microscopy, light and confocal microscopes and flow cytometry to describe all of the changes that occurred due to the stressor with special emphasis on mitochondrial alterations. A quantitative assessment of cells with depolarized mitochondria helped us to establish whether there is a relationship between starvation, re-feeding and the inactivation/activation of mitochondria. The results of our studies showed that in the freshwater shrimp N. davidi that were analyzed, long-term starvation activates the degeneration of epithelial cells at the ultrastructural level and causes an increase of cells with depolarized (non-active) mitochondria. The process of re-feeding leads to the gradual regeneration of the cytoplasm of the midgut epithelial cells; however, these changes were observed at the ultrastructural level. Additionally, re-feeding causes the regeneration of mitochondrial ultrastructure. Therefore, we can state that the increase in the number of cells with polarized mitochondria occurs slowly and does not depend on ultrastructural alterations.

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The role of autophagy in the midgut epithelium of Eubranchipus grubii (Crustacea, Branchiopoda, Anostraca)

Cited by 34 publications

References 48 publications

Structure and Ultrastructure of the Endodermal Region of the Alimentary Tract in the Freshwater Shrimp Neocaridina heteropoda (Crustacea, Malacostraca)

Structure and Ultrastructure of the Endodermal Region of the Alimentary Tract in the Freshwater Shrimp Neocaridina heteropoda (Crustacea, Malacostraca)

Interfaces between microbes and membranes of host epithelial cells in hemipteran midguts

The effect of starvation and re-feeding on mitochondrial potential in the midgut of Neocaridina davidi (Crustacea, Malacostraca)

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