Fine structure of the rectum in cockroaches (Dictyoptera): General organization and intercellular junctions

Noirot, Ch.; Noirot-Timothée, C.

doi:10.1016/0040-8166(76)90057-4

Cited by 70 publications

(18 citation statements)

References 31 publications

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“…Mitochondria are usually positioned next to the basolateral plasma membrane of these columnar cells, forming an association termed the plasmalemma-mitochondria1 complex (416) or the mitochondrial-scalariform junction (404,405). There are no basal plasma membrane infoldings in the cockroach Periplaneta sp., but they have consistently been observed in the anterior hindgut of other insects (24,26,28,262,403).…”

Section: Metazoansmentioning

confidence: 99%

Functional Morphology of the Large Intestine

Lacy

1991

Comprehensive Physiology

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Section: Metazoansmentioning

confidence: 99%

Functional Morphology of the Large Intestine

Lacy

1991

Comprehensive Physiology

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“…There is an extensive literature on this topic and on the mechanism through which water reabsorption is realized (Frenzel, 1882;Wigglesmorth, 1932;Baccetti, 1962;Gupta & Berridge, 1966a;Berridge & Gupta, 1967;Hopkins, 1967;Oschman & Wall, 1969;Phillips, 1970;Ramsay, 1971;Wall, 1977;Noirot & Noirot-Timothge, 1960, 1971, 1976, 1977.…”

Section: Introductionmentioning

confidence: 99%

Membrane specializations in the rectal papillae ofCeratitis capitata(Diptera)

Dallai

Salvatici

Fanciulli

et al. 1985

Bolletino di zoologia

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The fine structure of the rectal ampulla of Cerarilis capitala has been studied with SEM, TEhl and freeze-fracture techniques. The rectal papilla organization is that already seen in other advanced Diptera and comprises a cell cortical layer and a medullary cell complex. The former is lined by a thin cuticle showing small cavities which probably represent preferential sites for water uptake. The cytoplasm of the cortical cells is filled with stacks of infolded plasma membrane associated with mitochondria. At the level of these complex structures, scalariform and reticular septate junctions have been observed. Both these junctions seem to be implicated in the integrity of the intercellular space and of the stacked regions, thus facilitating the ion pumping through the stacks.The study also confirms the presence of a series of intercellular compartments (lateral dilatations; the sinus and the basal infundibulum) through which the water uptake is realized. ACKNOWLEDGEMENTS

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“…The high concentration of ions there produces an osmotic inflow of water, which then makes its way to the hemolymph via the intercellular spaces around the tracheae, ion reabsorption occurring en route (8,9). The exit route via the sinuses around the tracheae may be somewhat modified by the possible presence of basal cells (10), but this does not affect the model system as described or the interpretation of our results. This report describes new observations made after freeze-fracturing the rectum of Pernplaneta americana and incubating it, before fixation, in physiological saline containing the exogenous tracer lanthanum.…”

mentioning

confidence: 81%

“…204 are found] as well as in insect testis (15) where a blood-germ cell barrier occurs. Other investigators who have not found insect tight junctions, possibly because they are difficult to detect by virtue of their relative simplicity, have suggested that septate junctions are the basis of all occluding phenomena in invertebrates (10,16). However, I have found that tracers are able to move completely through septate junctions, and comparable events also occur in such insect tissues as Malpighian tubules, where inulin (molecular weight, 5200) readily traverses the septate junctions between adjacent cells (17).…”

mentioning

confidence: 99%

Tight Junctions in a Fluid-Transporting Epithelium of an Insect

Lane

1979

Science

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Occluding junctions have been found between the lateral cell borders at the base of the rectum of Periplaneta americana. They appear as punctate membrane appositions in thin sections, and after incubation in physiological solutions containing lanthanum before fixation the inward penetration of tracer is impeded in this same basal area. Moreover, freeze-fracture studies of this region reveal simple linear ridges on fracture face P and grooves on fracture face E, which are similar to the less complex vertebrate tight junctions. The luminal clefts, which permit free inward diffusion of tracers, present no tight junctions, but do have septate junctions. These results support the contention that, contrary to earlier speculation, arthropods do possess tight junctions; these, rather than septate junctions, appear to form the morphological basis of at least some of the permeability barriers observed in invertebrates.

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Fine structure of the rectum in cockroaches (Dictyoptera): General organization and intercellular junctions

Cited by 70 publications

References 31 publications

Functional Morphology of the Large Intestine

Functional Morphology of the Large Intestine

Membrane specializations in the rectal papillae ofCeratitis capitata(Diptera)

Tight Junctions in a Fluid-Transporting Epithelium of an Insect

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