Cranial anatomy of the "round-headed" Amphisbaenian Zygaspis quadrifrons (Squamata, Amphisbaenia) based on high-resolution x-ray computed tomography
Anat Rec (Hoboken). 2023 Oct 17. doi: 10.1002/ar.25304. Online ahead of print.ABSTRACTAmphisbaenians are a poorly understood clade of fossorial lizards. Because of their derived anatomy and relative scarcity, the systematics of the clade and its placement within squamates has long been controversial. Traditional approaches grouped species into four assemblages according to burrowing behavior and cranial morphology, resulting in the recognition of "shovel-headed," "round-headed," "keel-headed," and "spade-headed" morphotypes. Recent phylogenetic analyses do not support the monophyly of the taxa that share those morphotypes....
Source: Anatomical Record - October 18, 2023 Category: Anatomy Authors: Christopher J Bell Cristhian Cadena Antonio Meza Lauren Rudie Patrick J Lewis Source Type: research
Variation in the cranial osteology of the amphisbaenian genus Zygaspis based on high-resolution x-ray computed tomography
In this study, we used high-resolution x-ray computed tomography to compare the skulls of 15 specimens from seven of the eight species in the amphisbaenian genus Zygaspis (Zygaspis dolichomenta, Zygaspis ferox, Zygaspis quadrifrons, Zygaspis kafuensis, Zygaspis nigra, Zygaspis vandami, and Zygaspis violacea). Both interspecific and intraspecific variation, including asymmetry, is observed among the cranial bones of the specimens. There are unique morphological features on some cranial bones, including the premaxilla and ectopterygoid of Z. quadrifrons, the pterygoid and vomer of Z. kafuensis, and the extracolumella of Z. n...
Source: Anatomical Record - October 18, 2023 Category: Anatomy Authors: Antonio Meza Christopher J Bell Juan D Daza Monte L Thies Patrick J Lewis Source Type: research
Cranial anatomy of the "round-headed" Amphisbaenian Zygaspis quadrifrons (Squamata, Amphisbaenia) based on high-resolution x-ray computed tomography
Anat Rec (Hoboken). 2023 Oct 17. doi: 10.1002/ar.25304. Online ahead of print.ABSTRACTAmphisbaenians are a poorly understood clade of fossorial lizards. Because of their derived anatomy and relative scarcity, the systematics of the clade and its placement within squamates has long been controversial. Traditional approaches grouped species into four assemblages according to burrowing behavior and cranial morphology, resulting in the recognition of "shovel-headed," "round-headed," "keel-headed," and "spade-headed" morphotypes. Recent phylogenetic analyses do not support the monophyly of the taxa that share those morphotypes....
Source: Anatomical Record - October 18, 2023 Category: Anatomy Authors: Christopher J Bell Cristhian Cadena Antonio Meza Lauren Rudie Patrick J Lewis Source Type: research
Variation in the cranial osteology of the amphisbaenian genus Zygaspis based on high-resolution x-ray computed tomography
In this study, we used high-resolution x-ray computed tomography to compare the skulls of 15 specimens from seven of the eight species in the amphisbaenian genus Zygaspis (Zygaspis dolichomenta, Zygaspis ferox, Zygaspis quadrifrons, Zygaspis kafuensis, Zygaspis nigra, Zygaspis vandami, and Zygaspis violacea). Both interspecific and intraspecific variation, including asymmetry, is observed among the cranial bones of the specimens. There are unique morphological features on some cranial bones, including the premaxilla and ectopterygoid of Z. quadrifrons, the pterygoid and vomer of Z. kafuensis, and the extracolumella of Z. n...
Source: Anatomical Record - October 18, 2023 Category: Anatomy Authors: Antonio Meza Christopher J Bell Juan D Daza Monte L Thies Patrick J Lewis Source Type: research
The osteology of the Late Triassic reptile Scleromochlus taylori from μCT data
Anat Rec (Hoboken). 2023 Oct 16. doi: 10.1002/ar.25335. Online ahead of print.ABSTRACTScleromochlus taylori is one of the most enigmatic members of the herpetofauna from the Lossiemouth Sandstone Formation (Upper Triassic) of Elgin (Moray, Scotland). For many years it was thought to be closely related to pterosaurs and dinosaurs, but the anatomy of this animal is difficult to interpret because of the notoriously poor preservation of the six available specimens, which comprise void space in the sandstone after the bones were destroyed by diagenesis. Historically, these fossils have been studied using physical molds, which p...
Source: Anatomical Record - October 17, 2023 Category: Anatomy Authors: Davide Foffa Sterling J Nesbitt Richard J Butler Stephen L Brusatte Stig Walsh Nicholas C Fraser Paul M Barrett Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Histological and immunohistochemical studies of the fungiform and the circumvallate papillae through the life stages from 6- to 72-week-old Sprague-Dawley male rats
Anat Rec (Hoboken). 2023 Oct 11. doi: 10.1002/ar.25338. Online ahead of print.ABSTRACTTaste sensitivity decreases with age. Therefore, we investigated the histological and immunohistochemical changes in the receptive fields circumvallate papilla (CvP) and fungiform papilla (FfP) to explore the mechanism underlying age-related changes in taste sensitivity in 6- to 72-week-old rats. We analyzed papilla size, the thickness of the keratin layer of the papilla and stratified squamous epithelium, taste bud size, the keratin layer around the taste pores in the CvP and FfP, and the number and distribution of taste buds in the CvP ...
Source: Anatomical Record - October 11, 2023 Category: Anatomy Authors: Fatma M Abdel-Maksoud Chizuko Inui-Yamamoto Akiyo Kawano Shiho Honma Naoya Saeki Makoto Abe Moe Kuraki Shinsuke Ohba Satoshi Wakisaka Source Type: research
Soybean polyenylphosphatidylcholine (PPC) is beneficial in liver and extrahepatic tissue injury: An update in experimental research
This article updates PPC's beneficial effects on various forms of liver cell injury and other tissues in experimental research. PPC downregulates hepatocyte CYP2E1 expression and associated hepatotoxicity, as well as attenuates oxidative stress, apoptosis, lipoprotein oxidation and steatosis in alcoholic and nonalcoholic liver injury. PPC inhibits pro-inflammatory cytokine production, while stimulating anti-inflammatory cytokine secretion in ethanol or lipopolysaccharide-stimulated Kupffer cells/macrophages. It promotes M2-type macrophage polarization and metabolic reprogramming of glucose and lipid metabolism. PPC mitigat...
Source: Anatomical Record - October 10, 2023 Category: Anatomy Authors: Ki M Mak Aditya C Shekhar Source Type: research
Braincase and neuroanatomy of the lagerpetid Dromomeron gregorii (Archosauria, Pterosauromorpha) with comments on the early evolution of the braincase and associated soft tissues in Avemetatarsalia
Anat Rec (Hoboken). 2023 Oct 4. doi: 10.1002/ar.25334. Online ahead of print.ABSTRACTThe anatomy of the braincase and associated soft tissues of the lagerpetid Dromomeron gregorii (Archosauria: Avemetatarsalia) from the Late Triassic of the United States is here described. This corresponds to the first detailed description of cranial materials of Lagerpetidae, an enigmatic group of Late Triassic (c. 236-200 Million years ago) animals that are the closest known relatives of pterosaurs, the flying reptiles. The braincase of D. gregorii is characterized by the presence of an anteriorly elongated laterosphenoid and a postparie...
Source: Anatomical Record - October 5, 2023 Category: Anatomy Authors: Mario Bronzati Max C Langer Mart ín D Ezcurra Michelle R Stocker Sterling J Nesbitt Source Type: research
Main morphological characteristics and sexual dimorphism of hominin adult femora from the Sima de los Huesos Middle Pleistocene site (Sierra de Atapuerca, Spain)
In this study, we compiled previously published basic anatomical and biometric characteristics of SH adult femora, emphasizing the most relevant features compared to other recent and fossil hominins. The SH femora exhibited a primitive morphological pattern common to all non-Homo sapiens femora, as well as most of the Neandertal traits. Therefore, the complete Upper Pleistocene Neandertal pattern was well-established in Middle Pleistocene ancestors long before the proper Neandertals appeared. Additionally, we highlight that the SH and Neandertal femora share some morphological traits and proportions with modern humans that...
Source: Anatomical Record - October 5, 2023 Category: Anatomy Authors: Jos é-Miguel Carretero Laura Rodr íguez Rebeca Garc ía-González Juan-Luis Arsuaga Source Type: research
Braincase and neuroanatomy of the lagerpetid Dromomeron gregorii (Archosauria, Pterosauromorpha) with comments on the early evolution of the braincase and associated soft tissues in Avemetatarsalia
Anat Rec (Hoboken). 2023 Oct 4. doi: 10.1002/ar.25334. Online ahead of print.ABSTRACTThe anatomy of the braincase and associated soft tissues of the lagerpetid Dromomeron gregorii (Archosauria: Avemetatarsalia) from the Late Triassic of the United States is here described. This corresponds to the first detailed description of cranial materials of Lagerpetidae, an enigmatic group of Late Triassic (c. 236-200 Million years ago) animals that are the closest known relatives of pterosaurs, the flying reptiles. The braincase of D. gregorii is characterized by the presence of an anteriorly elongated laterosphenoid and a postparie...
Source: Anatomical Record - October 5, 2023 Category: Anatomy Authors: Mario Bronzati Max C Langer Mart ín D Ezcurra Michelle R Stocker Sterling J Nesbitt Source Type: research
