Comparative Histological Study of Teleost Livers in Relation to Phylogeny

Akiyoshi, Hideo; Inoue, Asuka

doi:10.2108/zsj.21.841

Cited by 71 publications

(69 citation statements)

References 30 publications

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“…Previous studies reported that the HSS of some lower vertebrates had a similar structure to those of normal humans, while others were modified in a more primitive form [5,6,21]. In mammals and higher vertebrates, hepatocytes are in close contact with sinusoidal capillaries that form a dense network, and hepatic plates line simple-layered hepatocytes, the so-called one-cell-thick plate's type [7].…”

Section: Hss (Hepatocyte Sinusoidal Structure)mentioning

confidence: 99%

“…In amphibians, HSS have been classified into three different types: (I) the several-cell-thick plate type, (II) two-cell-thick plate type, and (III) one-cell-thick plate type, with the traditional form being the combined two-and one-cell-thick plate type [6]. In contrast, teleost livers have an undeveloped network [5,7,22]. Akiyoshi and Inoue classified HSS into three different types: (I) the cord-like form, (II) tubular form, and (III) solid form in teleost livers.…”

Section: Hss (Hepatocyte Sinusoidal Structure)mentioning

confidence: 99%

“…Parenchymal arrangements are directed from the afferent (portal vein) of the lobule to its efferent (central vein) along the lengths of the hepatic plates, and Rappaport divided them into three arbitrary zones (zones 1, 2, and 3) [3]. Parenchymal arrangements form associations that are structurally similar in all parts of the vertebrate liver; however, a number of livers show structural and functional heterogeneities in adults with even phylum [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Amphibians have either the combined two-and one-cell-thick plate type or one-cell-thick plate type [6]. In fishes, hepatic plates line multilayered hepatocytes, the so-called solid or tubular types [4,5]. Akiyoshi and Inoue classified the structures of parenchymal arrangements into three different types in teleost livers: (I) the cord-like form, (II) tubular form, and (III) solid form [5].…”

Section: Introductionmentioning

confidence: 99%

“…In fishes, hepatic plates line multilayered hepatocytes, the so-called solid or tubular types [4,5]. Akiyoshi and Inoue classified the structures of parenchymal arrangements into three different types in teleost livers: (I) the cord-like form, (II) tubular form, and (III) solid form [5]. In several vertebrates, a relationship has been identified between HSS and phylogeny; however, this has not yet been examined in any order in reptilians.…”

Section: Introductionmentioning

confidence: 99%

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Comparative Histological Study of Parenchymal Arrangements in Three Orders of Reptilian Livers

Akiyoshi¹,

Inoue-Matsuo²,

Onodera³

2016

J Phylogen Evolution Biol

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This study presented detailed descriptions of parenchymal arrangements in the livers of 23 reptilian species using light microscopy, and extensively discussed this from a phylogenetic viewpoint. Hepatocyte sinusoidal structures (HSS) were classified into three different types: (I) the several-cell-thick plate type, (II) two-cell-thick plate type, and (III) one-cell-thick plate type. Parenchymal arrangements showed either the combined two-and one-cell-thick plate type or one-cell-thick plate type, whereas the sea snake in the sub-order Serpentes showed the several-cell-thick plate type. In the order Testudines, peripheral sinusoids near terminal portal veins were tortuous, becoming straighter toward terminal central veins. Melanomacrophages (MMs) were observed in sinusoidal capillaries in the order Testudinata, Crocodilia, and Squamata, but not in the sub-order Serpentes (except for the sea snake). This study showed that the architecture of the parenchymal arrangement was related to the phylogenetic relationship, whereas the distribution of MMs may not be. The MMs systems of turtles, alligators, and sea snakes, whose place of main habitation is underwater, may have adapted according to ecological and behavioral patterns. Based on the hepatic architecture of parenchymal arrangements and the distribution of MMs, it was suggested that reptilian livers acquired the division of three zones in the acinus.

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Section: Hss (Hepatocyte Sinusoidal Structure)mentioning

confidence: 99%

Section: Hss (Hepatocyte Sinusoidal Structure)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Comparative Histological Study of Parenchymal Arrangements in Three Orders of Reptilian Livers

Akiyoshi¹,

Inoue-Matsuo²,

Onodera³

2016

J Phylogen Evolution Biol

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An in vivo Look at Vertebrate Liver Architecture: Three‐Dimensional Reconstructions from Medaka (Oryzias latipes)

Hardman

Volz

Kullman

et al. 2007

The Anatomical Record

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Understanding three-dimensional (3D) hepatobiliary architecture is fundamental to elucidating structure/function relationships relevant to hepatobiliary metabolism, transport, and toxicity. To date, factual information on vertebrate liver architecture in 3 dimensions has remained limited. Applying noninvasive in vivo imaging to a living small fish animal model we elucidated, and present here, the 3D architecture of this lower vertebrate liver. Our investigations show that hepatobiliary architecture in medaka is based on a polyhedral (hexagonal) structural motif, that the intrahepatic biliary system is an interconnected network of canaliculi and bile-preductules, and that parenchymal architecture in this lower vertebrate is more related to that of the mammalian liver than previously believed. The in vivo findings presented advance our comparative 3D understanding of vertebrate liver structure/function, help clarify previous discrepancies among vertebrate liver conceptual models, and pose interesting questions regarding the ''functional unit'' of the vertebrate liver. Anat Rec, 290:770-782, 2007. 2007 Wiley-Liss, Inc.

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Light and Scanning Electron Microscope Examination of the Digestive Tract in Peppered Moray Eel, Gymnothorax pictus (Elopomorpha)

Takiue

Akiyoshi

2013

The Anatomical Record

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The morphology of the digestive tract of the peppered moray eel, Gymnothorax pictus (G. pictus) (Elopomorpha: Anguilliformes) was examined using both light and scanning electron microscopy. The digestive tract is composed of the esophagus, the stomach, and the intestines; pyloric caeca were absent. The stomach was divided into a cardiac region that was continuous with the esophagus, a body which terminated in a long blind sac, and a pyloric region that was continuous with the intestine. The short intestine possessed several partitions that were created by the mucosal folds within the posterior region. The terminal region of the stomach was characterized by the thick longitudinal muscularis and subserosa, and the gastric glands and microvilli were absent. Ciliary tufts of ciliated cells were observed on the surface of the partition-like mucosal folds within the intestinal wall. Acidic mucus was secreted throughout the digestive tract. It was suggested that the terminal region of the stomach is specialized for storage of large food items. In addition, it is possible that the partition-like mucosal folds within the intestine perform a function similar to that of the spiral valve and, and along with ciliated cells, facilitated digestion and absorption. The acidic mucus likely maintained surface epithelium pH and protease activity. Within a phylogenetic context, the absence of a pyloric caeca in G. pictus while possessing an intestine implies that this species is affiliated to groups that had branched off earlier than basal teleosts. Anat Rec, 296:443-451, 2013. V C 2013 Wiley Periodicals, Inc.

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Comparative Histological Study of Teleost Livers in Relation to Phylogeny

Cited by 71 publications

References 30 publications

Comparative Histological Study of Parenchymal Arrangements in Three Orders of Reptilian Livers

Comparative Histological Study of Parenchymal Arrangements in Three Orders of Reptilian Livers

An in vivo Look at Vertebrate Liver Architecture: Three‐Dimensional Reconstructions from Medaka (Oryzias latipes)

Light and Scanning Electron Microscope Examination of the Digestive Tract in Peppered Moray Eel, Gymnothorax pictus (Elopomorpha)

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