Journal of Anatomy最新文献

筛选
英文 中文
Venous vascularization of the forehead and clinical implications-A comprehensive review. 前额静脉血管形成及其临床意义综述。
IF 1.9 3区 医学
Journal of Anatomy Pub Date : 2025-07-30 DOI: 10.1111/joa.70022
Michał Tulski, Aleksandra Kita, Natalia Bernacka, Marcin Banasiuk, Albert Synal, Milena Michalak, Dominika Bauer, Krzysztof Wolak, Victoria Tarkowski, Paweł Surowiak, Zygmunt Domagała
{"title":"Venous vascularization of the forehead and clinical implications-A comprehensive review.","authors":"Michał Tulski, Aleksandra Kita, Natalia Bernacka, Marcin Banasiuk, Albert Synal, Milena Michalak, Dominika Bauer, Krzysztof Wolak, Victoria Tarkowski, Paweł Surowiak, Zygmunt Domagała","doi":"10.1111/joa.70022","DOIUrl":"https://doi.org/10.1111/joa.70022","url":null,"abstract":"<p><p>Some aesthetic medicine procedures, such as hyaluronic acid injections and thread implantations, are performed in the forehead area. Therefore, knowledge of the anatomy of this region is essential to ensure that medical procedures are carried out safely. A cross-sectional analysis of the available literature aims to organize and expand knowledge among specialists. Databases, such as Scopus, Embase, Web of Science, and PubMed were used to conduct a literature review, resulting in 1007 publications. After applying exclusion and inclusion criteria, results from 11 articles were extracted. The supratrochlear vein originates at the medial corner of the eye, where it joins the supraorbital vein to form the angular vein. The supraorbital vein, together with the angular vein, drains into the superior ophthalmic vein, converging at the medial edge of the supraorbital margin. Its main trunk connects medially with the supratrochlear veins and laterally with the superficial temporal veins, forming the transverse supraorbital vein. The superficial temporal veins are located on the temporal fascia and may appear as a single main branch or with three terminal branches, according to different reports. The vascularization of the forehead exhibits significant anatomical variability. Therefore, specialists performing medical procedures in this region should be prepared for diverse anatomy to ensure the safe administration of treatments in the forehead area. It is particularly crucial to recognize that pulmonary embolism may be the most serious venous complication following hyaluronic acid-based procedures, underscoring the need for precise anatomical knowledge and procedural caution.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144753382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Medial gastrocnemius and semitendinosus muscle growth in typically developing children: Longitudinal reference growth trajectories. 典型发育儿童内侧腓肠肌和半腱肌的生长:纵向参考生长轨迹。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-25 DOI: 10.1111/joa.70018
Ineke Verreydt, Ines Vandekerckhove, Geert Molenberghs, Tijl Dewit, Nathalie De Beukelaer, Britta Hanssen, Daisy Rymen, Els Ortibus, Anja Van Campenhout, Kaat Desloovere
{"title":"Medial gastrocnemius and semitendinosus muscle growth in typically developing children: Longitudinal reference growth trajectories.","authors":"Ineke Verreydt, Ines Vandekerckhove, Geert Molenberghs, Tijl Dewit, Nathalie De Beukelaer, Britta Hanssen, Daisy Rymen, Els Ortibus, Anja Van Campenhout, Kaat Desloovere","doi":"10.1111/joa.70018","DOIUrl":"https://doi.org/10.1111/joa.70018","url":null,"abstract":"&lt;p&gt;&lt;p&gt;Skeletal muscle is a plastic tissue that undergoes structural changes during childhood. Previous studies assumed a simple linear muscle growth function with respect to age, but longitudinal data are needed to check this assumption, and to develop both parameter- and muscle-specific growth trajectories. Both muscle quantity and quality are related to muscle function, indicating the importance of normal muscle development to participate in daily life activities. In children with altered muscle growth, such as those with neurological or neuromuscular disorders, norm-reference data are crucial to improve understanding of abnormal muscle development in relation to age and to optimize age-specific therapeutic interventions. The overall aim of the current prospective study was to create an extensive longitudinal normative database on muscle morphology and composition of the medial gastrocnemius and semitendinosus muscle in typically developing (TD) children, aged 4 months to 12 years old, hereby developing muscle- and parameter-specific norm-reference trajectories. Muscle morphology, that is, muscle belly length (ML), tendon length (TL), muscle-tendon unit length (MTUL), muscle volume (MV) and cross-sectional area (CSA), and muscle composition, that is, echo-intensity (EI), were assessed using three-dimensional freehand ultrasound. Muscle morphology was also normalized to body height, body weight or the product of body height and weight. It was hypothesized that absolute morphological parameters increase gradually with increasing age, following a simple straight linear growth pattern, while normalized morphological parameters were expected to remain stable over time. Mixed-effect models were fitted to estimate muscle- and parameter-specific trajectories with respect to age. Linear mixed-effect models (LMM) and non-linear mixed-effect models (non-LMM) were compared using the Akaike information criterion, with a lower value indicating a better model fit. Data were collected from 59 TD children (median age [interquartile range]: 5.92 [1.33-8.97] years; boys/girls: 29/30; 3-8 repeated measurements) for the medial gastrocnemius, totaling 230 measurements, and from 55 TD children (median age [interquartile range]: 5.95 [1.57-8.63] years; boys/girls: 26/29; 3-7 repeated measurements) for the semitendinosus, totaling 207 measurements. The current results revealed that for the absolute morphological parameters of the medial gastrocnemius, the longitudinal trajectory of MTUL showed a piecewise trajectory with a significant breakpoint (p &lt; 0.0001) at the age of 2.16 years influenced by ML growth, and another at the age of 6.91 years influenced by TL growth. CSA and MV showed comparable trajectories, with trajectory changes around ages 2 and 10 years. For the semitendinosus, TL and CSA increased linearly with age, whereas ML was best fitted by an LMM with a quadratic function, with an inflection point around the age of 7 years. MV displayed a piecewise trajec","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144707561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Anatomy of a bioengineered human pigmented skin equivalent to provide fundamental insights into skin tone melanin dynamics. 解剖生物工程人类色素皮肤等效物,为肤色黑色素动力学提供基本见解。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-23 DOI: 10.1111/joa.70026
Paola De Los Santos Gomez, Ranjit Rai, Pamela Ritchie, Lucy Smith, Amy Simpson, Kirsty Goncalves, Stefan Przyborski
{"title":"Anatomy of a bioengineered human pigmented skin equivalent to provide fundamental insights into skin tone melanin dynamics.","authors":"Paola De Los Santos Gomez, Ranjit Rai, Pamela Ritchie, Lucy Smith, Amy Simpson, Kirsty Goncalves, Stefan Przyborski","doi":"10.1111/joa.70026","DOIUrl":"https://doi.org/10.1111/joa.70026","url":null,"abstract":"<p><p>Full-thickness skin equivalents provide a platform for preclinical screening, streamlining the clinical trial process and reducing the need for animal testing while also providing a tool capable of fundamental insights into skin biology. Understanding the specific role of melanin dynamics across various skin tones is essential not only to better understand its function in photoprotection but is also better representative of a diverse population. Although pigmented skin equivalents (PSEs) have been reported in the literature, they rarely recapitulate the structural location of melanin within native keratinocytes, which is pivotal to its photoprotective role. This is due in part to the reliance of existing technologies on exogenous or animal-derived extracellular matrix (ECM) constituents or the complete lack of a dermal compartment. In this study, we describe the development of novel PSEs representative of skin pigmentation phenotypes in vitro, which comprise fibroblast-secreted endogenous ECM and a differentiated, well-organised epidermis that resembles diverse skin tones. We demonstrate that these skin tones display morphological differences at a gross, histological and ultrastructural level. We then utilised the system to provide fundamental insights into the processes of melanogenesis, melanin transfer from melanocytes to keratinocytes, supranuclear cap formation and melanosome organisation within the epidermis. Quantification of melanosome dynamics allowed for comparison to native tissue and among skin tones, providing a detailed comparison among experimental conditions. This innovative technology enables a wide range of applications, such as studying pigmentation mechanisms in skin responses to external stimuli, disease modelling and drug testing involving the interactions between the epidermis and dermis.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144698606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution. 在这一演化过程中,方取向与联合反作用力经历了相关演化。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-22 DOI: 10.1111/joa.70020
Kaleb C Sellers, Alec T Wilken, Corrine R Cranor, Kevin M Middleton, Casey M Holliday
{"title":"Quadrate orientation and joint reaction force underwent correlated evolution during suchian evolution.","authors":"Kaleb C Sellers, Alec T Wilken, Corrine R Cranor, Kevin M Middleton, Casey M Holliday","doi":"10.1111/joa.70020","DOIUrl":"https://doi.org/10.1111/joa.70020","url":null,"abstract":"<p><p>As part of the jaw joint, the quadrate is a key skeletal element of the feeding system in nonmammalian vertebrates, which plays a critical role in resisting joint reaction forces (JRF). Some authors have suggested that the quadrate orientation reflects overall muscle anatomy and, by implication, JRF. Here, we quantitatively test the longstanding hypothesis that quadrate orientation is correlated with JRF orientation using the suchian lineage leading to extant crocodylia. The evolution of the characteristic crocodylian skull is a major transformation in vertebrate evolution in which the quadrate played a crucial role. We use detailed, three-dimensional biomechanical modeling to estimate JRF in a sample of eleven fossil and extant suchians and compare these to the orientation of quadrates. We use the cross-product of orientation vectors to quantify similarity in orientation and show that the angle of the quadrate in the sagittal plane is tightly coupled with JRF in the same. These results demonstrate a coordinated evolution between JRF and quadrate anatomy during suchian evolution and provide a framework with which to analyze evolutionary changes in joint anatomy and biomechanics.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144682580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Surface morphology and distribution of oropharyngeal taste papillae in sharks and rays (Elasmobranchii, Chondrichthyes): Implications for gustatory sensitivity 鲨鱼和鳐鱼口咽味觉乳头的表面形态和分布:对味觉敏感性的影响。
IF 1.9 3区 医学
Journal of Anatomy Pub Date : 2025-07-18 DOI: 10.1111/joa.14278
Carla J. L. Atkinson, Shaun P. Collin
{"title":"Surface morphology and distribution of oropharyngeal taste papillae in sharks and rays (Elasmobranchii, Chondrichthyes): Implications for gustatory sensitivity","authors":"Carla J. L. Atkinson,&nbsp;Shaun P. Collin","doi":"10.1111/joa.14278","DOIUrl":"10.1111/joa.14278","url":null,"abstract":"<p>Gustation or taste in elasmobranch fishes (sharks, skates, and rays) is an important sensory modality that dictates the palatability and ultimately the final decision regarding the ingestion of food. However, the surface morphology, size, abundance, and distribution of taste papillae in this group of apex predators has received little attention. This comparative study uses scanning electron microscopy, histology, and quantitative topographic analyses to assess the surface ultrastructure and density of taste papillae within the oropharyngeal cavity of six batoid species from three families and five selachian species from three families, all from a range of habitats and with a variety of diets. Within the batoids, mean taste papilla diameter ranges from 56 to 220 μm (with 0.7–1.6% of the papilla surface covered with sensory microvilli), while papilla diameter ranges from 152 to 360 μm in selachians (with 0.4–1.0% of the papilla surface covered with sensory microvilli). Both batoids and selachians possess two distinct size classes of papillae within the oropharyngeal cavity, where up to five small papillae (56–62 μm in diameter) often surround a large papilla (159–192 μm in diameter). There are significant differences in the total number of taste papillae within the oropharyngeal cavity in both superorders of elasmobranchs with a range of 2,119–20,317 in batoids (papillae occupying up to 3.1% of the oropharyngeal cavity with 0.05% of the cavity occupied by sensory microvilli) and a range of 1,354–11,890 in selachians (papillae occupying up to 1.7% of the oropharyngeal cavity with 0.02% of the cavity occupied by sensory microvilli) with taste papillae generally concentrated in areas used for food mastication. In batoids, papillae concentrate on ridges within the oropharyngeal cavities and in some species also on the oral valves (47–175 cm<sup>−1</sup> in the dorsal cavity, 33–160 cm<sup>−1</sup> in the ventral cavity). In selachians, the highest concentrations of taste papillae are on the oral valves and anterior regions of the oral cavity (4–215 cm<sup>−1</sup> in the dorsal cavity; 5–159 cm<sup>−1</sup> in the ventral cavity), which permits taste assessment during biting and manipulation of potential food items. This study is the first to investigate the abundance and distribution of taste papillae in the oropharyngeal cavity of a range of species of elasmobranchs, thereby improving our understanding of the importance of gustation, implications for oral food manipulation, and interpretations of both gustatory resolution and sensitivity.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":"247 5","pages":"924-952"},"PeriodicalIF":1.9,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/joa.14278","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Morphological differences in myofibre size and shape: A comparative study of the soleus, gastrocnemius, triceps brachii and vastus lateralis in humans and mice. 肌纤维大小和形状的形态学差异:人类和小鼠比目鱼肌、腓肠肌、肱三头肌和股外侧肌的比较研究。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-17 DOI: 10.1111/joa.70025
Casper Soendenbroe, Rene B Svensson, Bettina Mittendorfer, S Peter Magnusson, Abigail L Mackey, Jesper L Andersen
{"title":"Morphological differences in myofibre size and shape: A comparative study of the soleus, gastrocnemius, triceps brachii and vastus lateralis in humans and mice.","authors":"Casper Soendenbroe, Rene B Svensson, Bettina Mittendorfer, S Peter Magnusson, Abigail L Mackey, Jesper L Andersen","doi":"10.1111/joa.70025","DOIUrl":"https://doi.org/10.1111/joa.70025","url":null,"abstract":"<p><p>Certain skeletal muscles are specialized for their functional roles, yet direct comparisons of cellular morphology of distinct muscles beyond fibre type distribution are limited. This study investigated myofibre morphology in predominantly slow, fast and mixed fibre muscles in humans and mice, with the aim of establishing reference values for muscle-specific myofibre size and shape. Nine healthy young men (Age: 26 ± 1 years, BMI: 23 ± 1 kg/m<sup>2</sup>) had muscle biopsies taken from soleus, triceps brachii and vastus lateralis muscles. Additionally, the soleus and gastrocnemius muscles were harvested from 7 male C57BL/6 mice. Muscle samples were analysed by ATPase (human) or immunofluorescence (mouse) stainings of fibre type specific cross-sectional area, perimeter and Shape Factor Index (SFI; fibre perimeter<sup>2</sup>/4 × π × fibre cross-sectional area). In humans, type I fibres had 30%-40% larger CSA and 4%-7% higher SFI in soleus (1.54 ± 0.06) compared to triceps brachii (1.47 ± 0.05) and vastus lateralis (1.43 ± 0.04). Type IIa fibres SFI were 10%-11% higher in soleus (1.61 ± 0.08) compared to triceps brachii (1.45 ± 0.04) and vastus lateralis (1.45 ± 0.08). Soleus type I fibres were more heterogeneous in terms of size and shape compared to other muscles. Analyses of mouse muscle showed a similar pattern, in that CSA and SFI were higher in type I and IIa fibres of the soleus compared to the gastrocnemius. These findings suggest a consistent morphological characteristic of soleus fibres across species, with potentially important implications for future biomedical research.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144659243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Issue Cover (August 2025) 发行封面(2025年8月)
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-16 DOI: 10.1111/joa.70021
{"title":"Issue Cover (August 2025)","authors":"","doi":"10.1111/joa.70021","DOIUrl":"https://doi.org/10.1111/joa.70021","url":null,"abstract":"<p>Cover image: see I. Cerda et al., ‘Dental plate histology of †<i>Ischyodus dolloi</i> (Chondrichthyes, Holocephali), from Antarctica’, this issue.\u0000</p><p>\u0000 \u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure>\u0000 </p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":"247 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/joa.70021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Collagen organisation in the fibrous joint capsules in the digits of the human hand. 人类手指纤维关节囊中的胶原蛋白组织。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-16 DOI: 10.1111/joa.70023
Fiona R Saunders, Ronald G Coutts, Richard M Aspden, Flora Gröning
{"title":"Collagen organisation in the fibrous joint capsules in the digits of the human hand.","authors":"Fiona R Saunders, Ronald G Coutts, Richard M Aspden, Flora Gröning","doi":"10.1111/joa.70023","DOIUrl":"https://doi.org/10.1111/joa.70023","url":null,"abstract":"<p><p>Normal function of the hand and, in particular, the finger joints is fundamental to the activities of daily life. Deterioration of hand and finger function can be detrimental and lead to poor quality of life. There are multiple causes of hand and finger dysfunction that can lead to pain and disability. In this review, we will consider the role of collagen and its organization within the finger joint capsules and adjacent entheses, particularly in the proximal interphalangeal joints, and aim to address three questions: (1) What are the main collagen orientations in the interphalangeal joint capsules of the human hand? (2) Is there a relationship between collagen orientation and joint function? (3) How could altering the orientation of collagen fibers affect the functional performance of the joint following injury or surgical intervention? To answer these questions, we will consider the evidence for the main collagen orientations in the finger joint capsules and entheses and investigate the relationships between structure and function. We will then consider how collagen organization is disrupted following injury and what may be potential modulators. This will provide a better understanding of how common surgical interventions affect collagen orientation in the joint capsules and highlight some implications for post-surgical outcomes.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144642627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Palaeohistology and life history of the early Palaeocene taeniodont Conoryctes comma (Mammalia: Eutheria) 古新世早期带齿兽的古组织学和生活史(哺乳纲:真齿兽目)。
IF 1.9 3区 医学
Journal of Anatomy Pub Date : 2025-07-14 DOI: 10.1111/joa.70010
Gregory F. Funston, Zoi Kynigopoulou, Thomas E. Williamson, Stephen L. Brusatte
{"title":"Palaeohistology and life history of the early Palaeocene taeniodont Conoryctes comma (Mammalia: Eutheria)","authors":"Gregory F. Funston,&nbsp;Zoi Kynigopoulou,&nbsp;Thomas E. Williamson,&nbsp;Stephen L. Brusatte","doi":"10.1111/joa.70010","DOIUrl":"10.1111/joa.70010","url":null,"abstract":"<p>The life histories of Palaeocene mammals are poorly known, but may have been central to their success in diversifying across terrestrial ecosystems after the end-Cretaceous extinction. Among these mammalian groups, the eutherian Taeniodonta are particularly enigmatic, with few modern analogues and no living descendants, despite being one of the only lineages to apparently traverse the Cretaceous-Palaeogene (K-Pg) boundary. Here, we investigate the life history of an early Palaeocene taeniodont, <i>Conoryctes comma</i>, based on a multi-individual, multi-element sample. Nearly all elements sampled exhibit similar osteohistological architecture, with a small internal zone of compacted coarse cancellous bone surrounded by an internal cortex of periosteally derived fibrolamellar bone of variable thickness, and an outer cortex of lamellar bone. The well-vascularized fibrolamellar complex in the limb bones, lacking cyclical growth marks, is indicative of overall rapid growth to near adult body size. Cyclical growth marks are present in the outer cortex after the transition to slow-growing lamellar bone, but not in the inner cortex, suggesting sexual maturity was reached in 1 year. In some elements, an internal non-cyclical growth mark shares histological similarities with weaning marks in living mammals and other contemporary Palaeocene mammals, and occurred at the body size predicted for this transition in therian mammals. The unusual presence of compacted coarse cancellous bone near the midshafts of multiple limb bones may be related to cortical thickening, and is similar to the arrangement described in some fossorial mammals, supporting previous assertions of this lifestyle in <i>Conoryctes</i>. Altogether, these palaeohistological signals suggest a life history in <i>C. comma</i> similar to living eutherians, despite uncertainty about whether it is within crown Placentalia or a close outgroup. Thus, our data are consistent with an early origin of placental-like reproductive strategies in their eutherian ancestors, although this attribute was likely shared more broadly among Mesozoic mammal lineages prior to the end-Cretaceous extinction.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":"247 3-4","pages":"819-841"},"PeriodicalIF":1.9,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/joa.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144626390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The influence of closed sutures on cranial morphology in Apert and Crouzon syndromes: A quantitative analysis. 闭合术对Apert和Crouzon综合征颅骨形态学影响的定量分析。
IF 1.8 3区 医学
Journal of Anatomy Pub Date : 2025-07-07 DOI: 10.1111/joa.70013
Ombline Delassus, Lyza Ben Bouazza, Adèle Rohée Traoré, Mathieu Uguen, Nathalie Boddaert, David Germanaud, Jean-François Mangin, Giovanna Paternoster, Maxime Taverne, Roman Hossein Khonsari
{"title":"The influence of closed sutures on cranial morphology in Apert and Crouzon syndromes: A quantitative analysis.","authors":"Ombline Delassus, Lyza Ben Bouazza, Adèle Rohée Traoré, Mathieu Uguen, Nathalie Boddaert, David Germanaud, Jean-François Mangin, Giovanna Paternoster, Maxime Taverne, Roman Hossein Khonsari","doi":"10.1111/joa.70013","DOIUrl":"https://doi.org/10.1111/joa.70013","url":null,"abstract":"<p><p>Craniosynostoses are congenital conditions characterized by premature suture fusions, altering skull growth and potentially impairing neurological function. Apert and Crouzon syndromes, both linked to FGFR2 mutations, share features but differ in their patterns of suture fusion and cranial deformation. This study quantitatively analyzes, with a high-resolution 3D morphometric analysis, global cranial morphology in syndromic craniosynostoses, comparing Crouzon and Apert syndromes to controls using standard medical CT scans; 72 unoperated patients with syndromic craniosynostoses (51 with Crouzon syndrome, 21 with Apert syndrome) and 289 controls were analyzed. Cranial vault segmentation was performed, and surfaces were rigidly aligned. Non-rigid registration enabled standardized mesh generation, with semi-landmarks extracted for shape analysis. Age-related shape variation was mitigated before analysis identified key morphological variation axes. Statistical comparisons revealed significant shape differences. Apert patients displayed a distinct turricephalic vault morphology with increased cranial height and reduced width, whereas Crouzon patients were more variable, with a moderate brachycephalic shape in bicoronal fusion and reduced vault distortion in pansynostosis. Unsupervised clustering showed clear morphometric separation of Apert patients, while Crouzon patients exhibited greater heterogeneity. Subgroups within Crouzon syndrome revealed specific deformation patterns associated with suture closure configurations. These findings refine our understanding of cranial shape variations in syndromic craniosynostoses and emphasize the need for integrating advanced morphometric analyses into clinical assessments. The distinct morphological signatures identified in Apert syndrome and Crouzon syndrome subgroups could inform personalized surgical planning and enhance phenotypic-genotypic correlations.</p>","PeriodicalId":14971,"journal":{"name":"Journal of Anatomy","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144583962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信