Morphologie最新文献

Analysis of dental anatomy knowledge among dental students: A preliminary study.

Morphologie Pub Date : 2024-12-20 DOI: 10.1016/j.morpho.2024.100945

M A A de Paiva, M A Benjamim, J H S Souza, D O Souza, M G B Trócoli, Á E F Alves, A F B De Oliveira

{"title":"Analysis of dental anatomy knowledge among dental students: A preliminary study.","authors":"M A A de Paiva, M A Benjamim, J H S Souza, D O Souza, M G B Trócoli, Á E F Alves, A F B De Oliveira","doi":"10.1016/j.morpho.2024.100945","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100945","url":null,"abstract":"Objective: This study aimed to compare the level of dental anatomy knowledge and visual acuity of dental students throughout their undergraduate course.Materials and methods: This descriptive, observational, and cross-sectional study with a quantitative approach was conducted over one year. Thirty-seven students, divided into three groups based on the time spent studying dental anatomy and carving, had their theoretical knowledge and visual acuity assessed using two questionnaires. The former was organized into two groups of questions: (1) related to the anatomy of anterior teeth, and (2) the anatomy of posterior teeth. Data were analyzed using the Kruskal-Wallis test, Wilcoxon test, and Spearman correlation (α=0.05).Results: No statistically significant difference was observed between sexes in the comparison of theoretical knowledge and photograph evaluation. Overall, participants performed similarly on both parts of the questionnaire about theoretical knowledge (anterior teeth group: 5.6±1.94; posterior teeth group: 5.7±2.32) with no statistical difference. There was no significant difference in the theoretical questionnaire results (P=0.615) or in the photograph evaluation (P=0.187) among the periods. In the intra-group comparison, P10 students scored higher in the photograph evaluation than in the theoretical questionnaire, showing a significant difference (P=0.027). No significant correlation was found between theoretical knowledge and sculpture evaluation (r=0.177; P=0.256).Conclusions: Within the limits of this study, it was concluded that students had similar performance in theoretical knowledge of anterior and posterior teeth. However, P10 students performed better in photograph evaluation than in the theoretical questionnaire, suggesting an improvement in practical skills throughout the course.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 365","pages":"100945"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the ventricular morphology of the heart of Brycon amazonicus (Agassiz, 1829) (Teleostei, Characiformes).

Morphologie Pub Date : 2024-12-20 DOI: 10.1016/j.morpho.2024.100944

Diego D Dos Santos, Mario V B Gardinal, Thalles F R Ruiz, Rinaldo Florêncio-Silva, Mateus R Vidal, Luiz R Falleiros-Júnior, Sebartião R Taboga, Irene B Franceschini-Vicentini, Carlos A Vicentini

{"title":"Exploring the ventricular morphology of the heart of Brycon amazonicus (Agassiz, 1829) (Teleostei, Characiformes).","authors":"Diego D Dos Santos, Mario V B Gardinal, Thalles F R Ruiz, Rinaldo Florêncio-Silva, Mateus R Vidal, Luiz R Falleiros-Júnior, Sebartião R Taboga, Irene B Franceschini-Vicentini, Carlos A Vicentini","doi":"10.1016/j.morpho.2024.100944","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100944","url":null,"abstract":"Brycon amazonicus, a fish species widely distributed along freshwater rivers in Latin America, is important in maintaining ecological balance. Although some morphological/physiological aspects of B. amazonicus have been reported, the cardiac histomorphology of this species remains poorly understood. Therefore, this study aimed to describe the heart, emphasizing coronary distribution and ventricular myoarchitecture, correlating its structure with its functional activity. Ten adult specimens were anesthetized and perfused with Trident® ink to highlight the coronary branching. Subsequently, the animals were euthanized to collect the hearts, which were collected and processed for histological and histochemical techniques and scanning electron microscopy. We observed that the heart of B. amazonicus has a pyramidal ventricle, mixed myocardium, and coronary vessels restricted to the compact layer, according to classifications in the literature. The compact layer comprises two types of muscle bundles, arranged in longitudinal and circular orientations. The coronary circulation, which originates in the lateral cephalic region, starts from the heart and extends to the ventricular myocardium. Therefore, B. amazonicus has a cardiac morphology similar to that of other teleost species already described in the literature, expanding information on the Characiformes group. The description obtained of the heart of this species may contribute to further studies that seek a better understanding of the ecophysiology and evolution of teleost fish in the freshwaters of the Neotropical region.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 365","pages":"100944"},"PeriodicalIF":0.0,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142873042","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Alpinia officinarum Rhizome extract on experimentally induced lung fibrosis: The pertinent role of Sirt1 and Nrf2 antioxidant pathways.

Morphologie Pub Date : 2024-12-17 DOI: 10.1016/j.morpho.2024.100940

Marwa A S Al-Gholam, Huda I Abd-Elhafiz, Sara G Tayel

{"title":"Effect of Alpinia officinarum Rhizome extract on experimentally induced lung fibrosis: The pertinent role of Sirt1 and Nrf2 antioxidant pathways.","authors":"Marwa A S Al-Gholam, Huda I Abd-Elhafiz, Sara G Tayel","doi":"10.1016/j.morpho.2024.100940","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100940","url":null,"abstract":"Background: Pulmonary fibrosis (PF) is a frequently reported COVID-19 sequela. It is a progressive disorder characterized by respiratory failure and death. The properties of Alpinia officinarum Rhizomes (AO) make it a highly potent antioxidant, anti-inflammatory, and antifibrotic agent. This study has evaluated AO's protective effects on bleomycin-induced PF in rats and investigated the underlying mechanisms.Material and methods: Bleomycin (5mg/kg, intratracheally) was used to induce PF in albino rats, and then, AO extract (200mg/kg/daily, orally) was administrated for 28days post-bleomycin-instillation. After euthanizing the rats, the biochemical, quantitative real-time polymerase chain reaction (qPCR) and histopathological examination of lung tissue were determined.Results: Findings have revealed that bleomycin significantly increased the tissue level of malondialdehyde, tumor necrosis factor-alpha, and interleukin-6, Silent information regulator 1 (Sirt1), and nuclear factor erythroid 2-related factor 2 (Nrf2) mRNA levels. Furthermore, the total antioxidant capacity level decreased in the lungs of bleomycin-instilled rats. However, AO extract significantly decreased histopathological injuries in hematoxylin & eosin, Masson's trichrome-stained sections, inducible nitric oxide synthase and α-smooth muscle actin, transforming growth factor beta 1 immunoexpression.Conclusion: Alpinia officinarum Rhizomes extract appears to protect against bleomycin-induced PF, possibly due to its antioxidant, anti-inflammatory, and antifibrotic properties.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 364","pages":"100940"},"PeriodicalIF":0.0,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142855981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bloom's taxonomy as a tool for educational objectives applied to human anatomy. 布卢姆分类法作为教育目标的工具应用于人体解剖学。

Morphologie Pub Date : 2024-12-13 DOI: 10.1016/j.morpho.2024.100943

M B Montello, S A Bezerra de Moura, B J Abreu

{"title":"Bloom's taxonomy as a tool for educational objectives applied to human anatomy.","authors":"M B Montello, S A Bezerra de Moura, B J Abreu","doi":"10.1016/j.morpho.2024.100943","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100943","url":null,"abstract":"Background: Human anatomy has long been a foundational aspect of medical education. To innovate and refine educational methodologies, it is necessary to employ tools that streamline the organization of classroom objectives. One such tool is Bloom's taxonomy (BT), a two-dimensional framework that guides the selection of verbs in defining educational objectives for curriculum components and lesson plans.Objectives: Develop Bloom's taxonomy verbs by creating a reference table for educators of human anatomy.Methods: A two-dimensional BT's table was constructed, allocating verbs applicable to the context of human anatomy and potential classroom application scenarios with descriptions of usage examples.Results and discussion: Twenty-four verbs were assigned with proper allocation in the two-dimensional table, along with the description of the expected objective corresponding to each verb, including examples of how it would be used within an educational context in the discipline of human anatomy. The need to develop proposals that incorporate descriptions of BT verbs in healthcare settings has been identified, particularly focusing on metacognitive aspects and the development of lesson plans with objectives based on BT.Conclusion: This resource can be used by educators to consult when initiating the development of objectives to be achieved in a class, curriculum component, or educational activity.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 364","pages":"100943"},"PeriodicalIF":0.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142824626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the genetics, mechanisms, and therapeutic innovations in non-syndromic tooth agenesis.

Morphologie Pub Date : 2024-12-09 DOI: 10.1016/j.morpho.2024.100941

Guilherme Henrique Borges, Caio Luiz Lins-Candeiro, Isabela Vinhal Henriques, Rui Barbosa de Brito Junior, Matheus Melo Pithon, Luiz Renato Paranhos

{"title":"Exploring the genetics, mechanisms, and therapeutic innovations in non-syndromic tooth agenesis.","authors":"Guilherme Henrique Borges, Caio Luiz Lins-Candeiro, Isabela Vinhal Henriques, Rui Barbosa de Brito Junior, Matheus Melo Pithon, Luiz Renato Paranhos","doi":"10.1016/j.morpho.2024.100941","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100941","url":null,"abstract":"Tooth agenesis is the congenital absence of one or more teeth in the normal series due to failures during dental development in the odontogenesis process. Although tooth development mechanisms are more precise in the literature, the etiology of non-syndromic tooth agenesis remains partially unknown. Mutations in genes that regulate the transcription factors involved in tooth development are associated with this condition. Despite advances in genetic research, questions remain about whose understanding might enable more precise and customized treatments. This study aimed to explain the molecular mechanisms associated with non-syndromic tooth agenesis and treatment progression regarding the condition in genetics. The search was non-systematic and performed in MedLine (via PubMed). The inclusion criteria were observational and experimental studies published in English, Portuguese, and Spanish, with open access and without time restrictions. The data analysis was narrative/descriptive. Fifty-three articles were selected. The primary genes associated with non-syndromic tooth agenesis identified in the study include PAX9 and MSX1 - essential for molar and premolar formation; WNT10A and WNT10B - involved in cell signaling during odontogenesis; AXIN2 - related to the regulation of cell control and colorectal cancer risk; EDA and EDAR - crucial for ectodermal structures; and BMP4 - regulates cell differentiation and morphogenesis. These lesions directly affect tooth formation and quantity. Understanding these genetic foundations and the molecular mechanisms of tooth agenesis is essential to improve diagnosis, develop customized therapies, and enhance patients' quality of life. Continuous research is critical to establish genetic-based therapeutic innovations.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 364","pages":"100941"},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142808181","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Population comparison of facial soft tissue thickness.

Morphologie Pub Date : 2024-12-06 DOI: 10.1016/j.morpho.2024.100939

S Kalafutová, M Chmelík, J Gaľová, E Petrejčíková

引用次数: 0

During the breeding season, lymphocytes assemble into ellipse-shaped clusters in the uropygial gland of the jungle crow Corvus macrorhynchos.

Morphologie Pub Date : 2024-12-06 DOI: 10.1016/j.morpho.2024.100924

A J Hirao, M Aoyama, S Sugita

{"title":"During the breeding season, lymphocytes assemble into ellipse-shaped clusters in the uropygial gland of the jungle crow Corvus macrorhynchos.","authors":"A J Hirao, M Aoyama, S Sugita","doi":"10.1016/j.morpho.2024.100924","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100924","url":null,"abstract":"Background: Recent studies indicate that the uropygial gland produces intraspecific chemosensory cues. The jungle crow Corvus macrorhynchos, which is a type of passerine, exhibits extreme morphological variation in the gonadal gland during the breeding season. Because the uropygial gland of the jungle crow sometimes exhibits morphological changes during the breeding season, we attempted to clarify the morphological changes in the uropygial gland of the jungle crow according to development and season.Methods: Captured birds were divided into three age groups according to the color of their upper palate: <1 year, 1-2 years, and >2 years old. Paraffin sections of the uropygial gland were stained with hematoxylin and eosin, Elastica van Gieson, Giemsa, and a proliferating cell nuclear antigen antibody.Results: Sexual dimorphism was not seen in the morphology of the uropygial gland in the jungle crow. However, changes due to growth and season were identified. During the breeding season in birds>2 years old, lymphocytes formed ellipse-shaped clusters around the glandular cavity. These clusters were invaded by collagen fibers from spherical cells.Conclusions: Collagen fibers, which develop from spherical cells, seem to be related to lymphoid cluster migration. Ellipse-shaped lymphoid clusters may play a crucial role in reproductive behavior during the breeding season.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 364","pages":"100924"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142792556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Expression of β-catenin and MSX1 proteins during parrot pseudoteeth and goose denticulations and giant filiform papillae's early development.

Morphologie Pub Date : 2024-12-04 DOI: 10.1016/j.morpho.2024.100938

S Louryan, M Duterre, N Vanmuylder

{"title":"Expression of β-catenin and MSX1 proteins during parrot pseudoteeth and goose denticulations and giant filiform papillae's early development.","authors":"S Louryan, M Duterre, N Vanmuylder","doi":"10.1016/j.morpho.2024.100938","DOIUrl":"https://doi.org/10.1016/j.morpho.2024.100938","url":null,"abstract":"Objective: To use immunohistochemistry to analyse the expression of MSX1 and β-catenin proteins during parrot pseudoteeth development and goose denticulations and giant filiform papillae ontogeny.Material and methods: Eggs were purchased from stockbreeders. Embryos from selected stages were removed and sliced. Immunohistochemistry using anti-MSX1 and anti-β-catenin antibodies was performed and the results were compared with each other.Results: For each protein, the staining predominated in the epithelial layer, with sparser labelling in the subjacent mesenchyme. Despite the unequal chronology of every appendage, the labelling became maximal around stage 40.Discussion and conclusion: Although the overall pattern of labelling was similar in the three appendages, several differences were observed. These structures can be considered as homologous but not strictly similar. They are odontode derivatives, with different growing mechanisms. MSX1is considered as characteristic of progress zones and areas of epithelial-mesenchymal interactions (as β-catenin) and is closely associated with β-catenin in several models. Our observations were consistent with these features, and pseudoteeth and denticulations were found to differ from true teeth in their mechanism of development: evagination vs invagination. In true tooth germs, MSX1 express mainly in the mesenchyme. In conclusion, our findings do reinforce the homologies between all these appendages but also reveal a key difference between the development of tooth germs, pseudoteeth and denticulations. Our findings also suggest that tongue papillae differ from pseudoteeth appendages in several growing mechanisms despite the similarities found between the two.","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"109 364","pages":"100938"},"PeriodicalIF":0.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142787370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sommaire

Morphologie Pub Date : 2024-12-01 DOI: 10.1016/S1286-0115(24)00180-2

引用次数: 0

Morphologie Pub Date : 2024-11-30 DOI: 10.1016/j.morpho.2024.100920

S. Louryan

引用次数: 0