Temporal fenestration in a Procolophon trigoniceps specimen (Procolophonoidea) from the Lower Triassic of Brazil
In this study, we describe new cranial material of P. trigoniceps from the Sanga do Cabral Formation of Brazil that clearly displays temporal fenestration. Aside from the fenestra, the specimen closely resembles more complete Brazilian P. trigoniceps skulls. The recurrent presence of the feature and the varying morphologies exhibited by the temporal fenestrae of P. trigoniceps may substantiate its characterization as an anomalous trait within the species. Furthermore, the occurrence of temporal fenestration in P. trigoniceps specimens from both South America and South Africa underscores parallels between these two Early Tr...
Source: Anatomical Record - November 20, 2023 Category: Anatomy Authors: Karine Pohlmann Juan C Cisneros Átila A S Da-Rosa Felipe L Pinheiro Source Type: research
Temporal fenestration in a Procolophon trigoniceps specimen (Procolophonoidea) from the Lower Triassic of Brazil
In this study, we describe new cranial material of P. trigoniceps from the Sanga do Cabral Formation of Brazil that clearly displays temporal fenestration. Aside from the fenestra, the specimen closely resembles more complete Brazilian P. trigoniceps skulls. The recurrent presence of the feature and the varying morphologies exhibited by the temporal fenestrae of P. trigoniceps may substantiate its characterization as an anomalous trait within the species. Furthermore, the occurrence of temporal fenestration in P. trigoniceps specimens from both South America and South Africa underscores parallels between these two Early Tr...
Source: Anatomical Record - November 20, 2023 Category: Anatomy Authors: Karine Pohlmann Juan C Cisneros Átila A S Da-Rosa Felipe L Pinheiro Source Type: research
Immunolocalization of the mechanogated ion channels PIEZO1 and PIEZO2 in human and mouse dental pulp and periodontal ligament
Anat Rec (Hoboken). 2023 Nov 17. doi: 10.1002/ar.25351. Online ahead of print.ABSTRACTPIEZO1 and PIEZO2 are essential components of mechanogated ion channels, which are required for mechanotransduction and biological processes associated with mechanical stimuli. There is evidence for the presence of PIEZO1 and PIEZO2 in teeth and periodontal ligaments, especially in cell lines and mice, but human studies are almost nonexistent. Decalcified permanent human teeth and mouse molars were processed for immunohistochemical detection of PIEZO1 and PIEZO2. Confocal laser microscopy was used to examine the co-localization of PIEZO 1...
Source: Anatomical Record - November 17, 2023 Category: Anatomy Authors: Juan J Gaite Antonio Sol é-Magdalena Yolanda Garc ía-Mesa Patricia Cuendias Jos é Martin-Cruces Olivia Garc ía-Suárez Teresa Cobo Jos é A Vega Benjam ín Martín-Biedma Source Type: research
Immunolocalization of the mechanogated ion channels PIEZO1 and PIEZO2 in human and mouse dental pulp and periodontal ligament
Anat Rec (Hoboken). 2023 Nov 17. doi: 10.1002/ar.25351. Online ahead of print.ABSTRACTPIEZO1 and PIEZO2 are essential components of mechanogated ion channels, which are required for mechanotransduction and biological processes associated with mechanical stimuli. There is evidence for the presence of PIEZO1 and PIEZO2 in teeth and periodontal ligaments, especially in cell lines and mice, but human studies are almost nonexistent. Decalcified permanent human teeth and mouse molars were processed for immunohistochemical detection of PIEZO1 and PIEZO2. Confocal laser microscopy was used to examine the co-localization of PIEZO 1...
Source: Anatomical Record - November 17, 2023 Category: Anatomy Authors: Juan J Gaite Antonio Sol é-Magdalena Yolanda Garc ía-Mesa Patricia Cuendias Jos é Martin-Cruces Olivia Garc ía-Suárez Teresa Cobo Jos é A Vega Benjam ín Martín-Biedma Source Type: research
Immunolocalization of the mechanogated ion channels PIEZO1 and PIEZO2 in human and mouse dental pulp and periodontal ligament
Anat Rec (Hoboken). 2023 Nov 17. doi: 10.1002/ar.25351. Online ahead of print.ABSTRACTPIEZO1 and PIEZO2 are essential components of mechanogated ion channels, which are required for mechanotransduction and biological processes associated with mechanical stimuli. There is evidence for the presence of PIEZO1 and PIEZO2 in teeth and periodontal ligaments, especially in cell lines and mice, but human studies are almost nonexistent. Decalcified permanent human teeth and mouse molars were processed for immunohistochemical detection of PIEZO1 and PIEZO2. Confocal laser microscopy was used to examine the co-localization of PIEZO 1...
Source: Anatomical Record - November 17, 2023 Category: Anatomy Authors: Juan J Gaite Antonio Sol é-Magdalena Yolanda Garc ía-Mesa Patricia Cuendias Jos é Martin-Cruces Olivia Garc ía-Suárez Teresa Cobo Jos é A Vega Benjam ín Martín-Biedma Source Type: research
A saurischian (Archosauria, Dinosauria) ilium from the Upper Triassic of southern Brazil and the rise of Herrerasauria
Anat Rec (Hoboken). 2023 Nov 16. doi: 10.1002/ar.25342. Online ahead of print.ABSTRACTThe Carnian (Upper Triassic) rocks of the Candelária Sequence present a rich record of dinosaurs, including some of the oldest known dinosaurs worldwide. In this contribution we describe the first unequivocal dinosaur from the Pivetta site, located in the Restinga Sêca municipality, Southern Brazil. The specimen CAPPA/UFSM 0373 is an isolated but well-preserved left ilium. A thorough examination of the specimen's anatomy and a phylogenetic analysis provides evidence that CAPPA/UFSM 0373 belongs to the Herrerasauria. We were able to iden...
Source: Anatomical Record - November 16, 2023 Category: Anatomy Authors: Mauricio Silva Garcia S érgio Furtado Cabreira L úcio Roberto da Silva Fl ávio Augusto Pretto Rodrigo Temp M üller Source Type: research
MT1-MMP and TIMP-2 are first expressed in the colon glands after a single dose of azoxymethane (AOM)
Anat Rec (Hoboken). 2023 Nov 15. doi: 10.1002/ar.25348. Online ahead of print.ABSTRACTTissue inhibitor of metalloproteinase-2 (TIMP-2) and membrane-type 1-matrix metalloproteinase (MT1-MMP) are always expressed during the cancer process. The aim was to identify which regions of the colon mucosa MT1-MMP and TIMP-2 begin to express themselves, as well as to establish their expression in relation to cell proliferation and mucin production. After intraperitoneal injection of 15 mg/kg of azoxymethane (AOM) at 4, 12, and 20 weeks, histological sections of the middle segment of the rat colon mucosa were evaluated by immunohistoch...
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: J éssica da Silva Jaime Ribeiro Freitas Eliakin Roberto do Carmo Jose Rosa Gomes Source Type: research
Looking back over the shoulder: New insights on the unique scapular anatomy of the tapir (Perissodactyla: Tapiridae)
This study represents a firm reminder for anatomists, veterinarians, and paleontologists to (where possible) look beyond veterinary model systems when inferring musculoskeletal form or function in non-model organisms.PMID:37966173 | DOI:10.1002/ar.25352 (Source: Anatomical Record)
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: Jamie A MacLaren Source Type: research
MT1-MMP and TIMP-2 are first expressed in the colon glands after a single dose of azoxymethane (AOM)
Anat Rec (Hoboken). 2023 Nov 15. doi: 10.1002/ar.25348. Online ahead of print.ABSTRACTTissue inhibitor of metalloproteinase-2 (TIMP-2) and membrane-type 1-matrix metalloproteinase (MT1-MMP) are always expressed during the cancer process. The aim was to identify which regions of the colon mucosa MT1-MMP and TIMP-2 begin to express themselves, as well as to establish their expression in relation to cell proliferation and mucin production. After intraperitoneal injection of 15 mg/kg of azoxymethane (AOM) at 4, 12, and 20 weeks, histological sections of the middle segment of the rat colon mucosa were evaluated by immunohistoch...
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: J éssica da Silva Jaime Ribeiro Freitas Eliakin Roberto do Carmo Jose Rosa Gomes Source Type: research
Looking back over the shoulder: New insights on the unique scapular anatomy of the tapir (Perissodactyla: Tapiridae)
This study represents a firm reminder for anatomists, veterinarians, and paleontologists to (where possible) look beyond veterinary model systems when inferring musculoskeletal form or function in non-model organisms.PMID:37966173 | DOI:10.1002/ar.25352 (Source: Anatomical Record)
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: Jamie A MacLaren Source Type: research
MT1-MMP and TIMP-2 are first expressed in the colon glands after a single dose of azoxymethane (AOM)
Anat Rec (Hoboken). 2023 Nov 15. doi: 10.1002/ar.25348. Online ahead of print.ABSTRACTTissue inhibitor of metalloproteinase-2 (TIMP-2) and membrane-type 1-matrix metalloproteinase (MT1-MMP) are always expressed during the cancer process. The aim was to identify which regions of the colon mucosa MT1-MMP and TIMP-2 begin to express themselves, as well as to establish their expression in relation to cell proliferation and mucin production. After intraperitoneal injection of 15 mg/kg of azoxymethane (AOM) at 4, 12, and 20 weeks, histological sections of the middle segment of the rat colon mucosa were evaluated by immunohistoch...
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: J éssica da Silva Jaime Ribeiro Freitas Eliakin Roberto do Carmo Jose Rosa Gomes Source Type: research
Looking back over the shoulder: New insights on the unique scapular anatomy of the tapir (Perissodactyla: Tapiridae)
This study represents a firm reminder for anatomists, veterinarians, and paleontologists to (where possible) look beyond veterinary model systems when inferring musculoskeletal form or function in non-model organisms.PMID:37966173 | DOI:10.1002/ar.25352 (Source: Anatomical Record)
Source: Anatomical Record - November 15, 2023 Category: Anatomy Authors: Jamie A MacLaren Source Type: research
Metopism in adult South Africans and its relationship to frontal sinus size
This study documents the incidences of complete and partial metopism and their possible relationship to frontal sinus volume (FSV) in a sample of modern adult black South Africans with a view to evaluating the hypothesis that metopism affects frontal sinus hypoplasia. FSV was measured from CT scans and the incidence of metopism was recorded from direct observations of dried cadaveric crania. The sex of each individual was known. Four linear cranial dimensions were used to compute a geometric mean by which to scale FSV. The incidence of partial metopism (38%) is comparable to that reported for other population samples, alth...
Source: Anatomical Record - November 13, 2023 Category: Anatomy Authors: Frederick E Grine Victoria A Greening Emily Hernandez Brendon K Billings Victor Mngomezulu Carrie S Mongle Source Type: research
Metopism in adult South Africans and its relationship to frontal sinus size
This study documents the incidences of complete and partial metopism and their possible relationship to frontal sinus volume (FSV) in a sample of modern adult black South Africans with a view to evaluating the hypothesis that metopism affects frontal sinus hypoplasia. FSV was measured from CT scans and the incidence of metopism was recorded from direct observations of dried cadaveric crania. The sex of each individual was known. Four linear cranial dimensions were used to compute a geometric mean by which to scale FSV. The incidence of partial metopism (38%) is comparable to that reported for other population samples, alth...
Source: Anatomical Record - November 13, 2023 Category: Anatomy Authors: Frederick E Grine Victoria A Greening Emily Hernandez Brendon K Billings Victor Mngomezulu Carrie S Mongle Source Type: research
On the dentition, tooth replacement, and taxonomic status of Charruodon tetracuspidatus Abdala & amp; Ribeiro, 2000: A bizarre cynodont from the middle upper Triassic of southern Brazil
Anat Rec (Hoboken). 2023 Nov 11. doi: 10.1002/ar.25349. Online ahead of print.ABSTRACTAmong the living tetrapods, mammals present a unique tooth replacement pattern, diphyodonty. Therefore, studying the dentition of mammalian ancestors is relevant to a better understanding of how this remarkable feature evolved. However, little is known about the postcanine tooth replacement pattern among Triassic cynodonts. Here, we applied the nondestructive method of microcomputed tomography (microCT) to analyze the dentition of the enigmatic Upper Triassic sectorial-toothed cynodont Charruodon tetracuspidatus (MCP 3934 PV, holotype) fr...
Source: Anatomical Record - November 11, 2023 Category: Anatomy Authors: Carolina Abreu Hoffmann Ana Maria Ribeiro Marco Brandalise de Andrade Source Type: research
