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Exploration de la microcirculation cutanée du lambeau perforant PAP : étude anatomoradiologique PAP穿孔片皮肤微循环探查:解剖放射学研究
Q3 Medicine Pub Date : 2025-11-26 DOI: 10.1016/j.morpho.2025.101036
Martin Lhuaire , Aïna Venkatasamy , Geoffroy Noel , Severine Carrion , Bénédicte Saboret , Vincent Hunsinger , Ignacio Garrido , Mohamed Derder , Mikael Hivelin , Peter Abrahams , Vincent Delmas , Christian Fontaine , Bertrand Tavitian , Laurent Lantieri , Olivier Clement

Objectif

Le lambeau perforant issu de l’artère profonde de la cuisse (PAP) est une technique fréquemment utilisée en chirurgie reconstructrice. La microcirculation cutanée, élément clé pour la viabilité du lambeau, reste insuffisamment étudiée et mal documentée [1], [2], [3]. L’objectif de cette étude était de cartographier la microcirculation cutanée (artériosome et veinosome) du lambeau PAP en utilisant des techniques d’imagerie radiologique avancées, afin de mieux comprendre sa vascularisation et d’améliorer la planification chirurgicale.

Matériels et méthodes

Cette étude radioanatomique a été réalisée sur 18 sujets anatomiques, soit 36 lambeaux à l’état frais. Chaque lambeau a été injecté avec un mélange de latex coloré et de baryte pour opacifier les structures vasculaires. Les prélèvements ont ensuite été imagés par mammographie Selenia (Hologic, Inc. Marlborough, MA, États-UNis) pour l’analyse bidimentionnelle et par scanner à comptage photonique Naeotom Alpha (Siemens Healthineers, Erlangen, Allemagne) pour les reconstructions tridimentionnelles de la microcirculation.

Résultats

L’analyse a permis d’identifier toutes les perforantes principales par lambeau. La mammographie a permis de montrer la densité vasculaire artérielle et veineuses ainsi que la richesse des anastomoses entres les perforantes adjacentes, démontrant la suppléance des unes par rapport aux autres. Le scanner à comptage photonique a permis grâce aux reconstructions 3D d’objectiver les ramifications vasculaires artérielles au travers du tissus sous-cutané jusqu’au plexus sous-dermique. Il a également permis d’objectiver un réseau d’anastomoses entre le réseau veineux superficiel et les perforantes veineuses par des veines communicantes de gros calibre.

Conclusion

Cette étude cadavérique a démontré que la microcirculation cutanée du lambeau PAP peut être cartographiée avec précision grâce à l’injection de latex et de baryte associée à l’imagerie par mammographie et scanner à comptage photonique. Les données obtenues offrent des informations fondamentales sur la vascularisation de ce lambeau, pouvant améliorer la planification chirurgicale dans l’objectif de réduire les complications.
目的:大腿深动脉穿孔片(DAP)是一种常用于重建手术的技术。皮肤微循环是细胞膜生存的关键因素,目前还没有得到充分的研究和记录[1]、[2]、[3]。本研究的目的是使用先进的放射成像技术绘制PAP lamba的皮肤微循环(动脉体和静脉体),以便更好地了解其血管化和改进手术计划。本研究对18个解剖对象(36片新鲜切片)进行了放射解剖学研究。每个薄片都注射了彩色乳胶和重晶石的混合物,以使血管结构不透明。这些样本随后由Selenia (Hologic, Inc.)乳房x线照相术成像。Marlborough, MA, US)用于二维分析和Naeotom Alpha光子计数扫描仪(Siemens Healthineers, Erlangen, Germany)用于微循环的三维重建。结果:通过分析,可以确定每条板材的所有主要穿孔。乳房x光检查显示了动脉和静脉的血管密度,以及相邻穿孔之间的解剖结构的丰富性,显示了相对于其他穿孔的补充性。通过3D重建,光子计数扫描仪可以客观地观察从皮下组织到皮下丛的动脉血管分支。他还通过大口径的连接静脉,在浅静脉网络和穿静脉之间建立了一个解剖网。结论:这项尸体研究表明,通过注射乳胶和重晶石,结合乳房x线照相术和光子计数扫描,可以精确地绘制PAP膜的皮肤微循环。获得的数据提供了关于血管化的基本信息,可以改进手术计划,以减少并发症。
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引用次数: 0
A systematic review and surgical anatomy of the greater omentum 大网膜的系统回顾和外科解剖。
Q3 Medicine Pub Date : 2025-11-24 DOI: 10.1016/j.morpho.2025.101072
T.S. Joseph , E. Hogan , A. Cesmebasi , M. Carrasco , C. Ang , N. Davis , M. Montalbano , M. Loukas
The greater omentum, a peritoneal fold derived from the dorsal mesentery, is critical in immune surveillance, inflammation regulation, and tissue repair. Its extensive vascular and lymphatic networks and immune-rich milky spots contribute to pathogen clearance, wound healing, and metabolic regulation. Despite its well-documented physiological roles, a comprehensive evaluation of its vascular and lymphatic architecture, embryological development, and clinical applications remains necessary to refine its use in pathology and surgical interventions. This review analyzes the greater omentum's structural organization, developmental origins, pathological involvement, and evolving role in surgical and therapeutic applications. A systematic review followed PRISMA guidelines, analyzing 69 studies from an initial pool of 2526 records. The review discusses the omentum's roles in immune defense and its involvement in pathological conditions such as torsion, cysts, and neoplasms. Its surgical applications, including omental transposition, anastomotic reinforcement, oncologic resections, and abdominal wall reconstruction, are explored in detail. Furthermore, the review examines its angiogenic and immunomodulatory properties, highlighting their contributions to reparative functions and potential clinical applications. The omentum's role in disease progression, particularly in malignancies, is also evaluated, emphasizing its dual function as both a protective barrier and a site for metastatic spread. By integrating anatomical insights with clinical relevance, this review strengthens the understanding of the omentum's diverse contributions to abdominal health and disease. Findings highlight its practical significance in surgical innovation and therapeutic interventions, offering new perspectives for future research into its regenerative potential, oncologic implications, and broader medical applications.
大网膜是源自肠系膜背侧的腹膜褶,在免疫监视、炎症调节和组织修复中起关键作用。其广泛的血管和淋巴网络和免疫丰富的乳白色斑点有助于病原体清除,伤口愈合和代谢调节。尽管其生理作用已被充分证明,但对其血管和淋巴结构、胚胎发育和临床应用的全面评估仍有必要完善其在病理和外科干预中的应用。这篇综述分析了大网膜的结构组织、发育起源、病理参与以及在外科和治疗应用中的演变作用。系统回顾遵循PRISMA的指导方针,分析了2526条记录的初始池中的69项研究。这篇综述讨论了网膜在免疫防御中的作用及其在诸如扭转、囊肿和肿瘤等病理状况中的作用。它的外科应用,包括大网膜转位,吻合口加固,肿瘤切除,腹壁重建,详细探讨。此外,综述了其血管生成和免疫调节特性,强调了它们在修复功能和潜在临床应用方面的贡献。网膜在疾病进展中的作用,特别是在恶性肿瘤中,也进行了评估,强调其作为保护屏障和转移扩散部位的双重功能。通过将解剖学见解与临床相关性相结合,本综述加强了对网膜对腹部健康和疾病的多种贡献的理解。研究结果强调了其在外科创新和治疗干预方面的实际意义,为未来研究其再生潜力、肿瘤学意义和更广泛的医学应用提供了新的视角。
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引用次数: 0
Selection of human embryo for IVF treatment using ensemble machine learning technique 使用集成机器学习技术选择体外受精治疗的人类胚胎。
Q3 Medicine Pub Date : 2025-11-19 DOI: 10.1016/j.morpho.2025.101082
A. Chaudhari , A. Mahajan , S. Nainan , D. Shah , C. Noronha
The success of in vitro fertilization (IVF) treatment for infertility majorly depends upon the selection of a healthy embryo by the embryologist which is highly subjective and depends on the expertise of the embryologist. This work introduces a comprehensive framework starting with the collection and pre- processing of the day 3 embryo and blastocyst images. It is followed by extraction of multifaceted information that includes color, edge, and other relevant features using local Descriptor, capturing the complex details necessary for precise embryo evaluation. Feature selection is done using the Extra Trees classifier and is followed by a one-dimensional Convolutional Neural Network (1D-CNN) for deeper feature extraction. The interpretability and predictive power of the extracted features is enhanced by 1D-CNN. Using a novel approach, the last layer of the 1D-CNN is replaced with an ensemble of classifiers to determine the quality of embryos. This ensemble technique leverages the unique strengths of each classifier used, providing a robust and comprehensive decision framework. The proposed method significantly outperforms existing approaches with an accuracy of 93% and 98% with blastocyst and day 3 embryo dataset, respectively. The research is undertaken in collaboration with Gynaecworld, the Center for Women's Health & Fertility, Mumbai.
体外受精(IVF)治疗不孕症的成功主要取决于胚胎学家对健康胚胎的选择,这是高度主观的,取决于胚胎学家的专业知识。这项工作介绍了一个全面的框架,从收集和预处理第3天胚胎和囊胚图像开始。然后,使用局部描述符提取多方面信息,包括颜色、边缘和其他相关特征,捕获精确胚胎评估所需的复杂细节。特征选择是使用Extra Trees分类器完成的,然后是一维卷积神经网络(1D-CNN)进行更深入的特征提取。1D-CNN增强了提取特征的可解释性和预测能力。使用一种新颖的方法,将1D-CNN的最后一层替换为分类器集合,以确定胚胎的质量。这种集成技术利用了所使用的每个分类器的独特优势,提供了一个健壮而全面的决策框架。该方法在囊胚和第3天胚胎数据集上的准确率分别为93%和98%,显著优于现有方法。这项研究是与孟买妇女健康与生育中心妇科世界合作进行的。
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引用次数: 0
Radiographic dental age estimation of Brazilian children and adolescents using a national reference sample 使用国家参考样本的巴西儿童和青少年的放射学牙齿年龄估计。
Q3 Medicine Pub Date : 2025-11-11 DOI: 10.1016/j.morpho.2025.101081
E. Rodrigues , D. Moreira , R. Silva , A. Franco
Several radiographic methods have been proposed for dental age estimation, among which the Willems model and its Brazilian adaptation by Franco et al. (2024) have shown promising results. However, the Brazilian model has not yet been tested in Northeastern populations. This study aimed to validate Franco's model in a sample of children and adolescents from Alagoas, Northeastern Brazil. A retrospective, cross-sectional study was performed on 500 panoramic radiographs (250 males, 250 females) aged 6–15.99 years, distributed evenly across one-year intervals. Chronological age was calculated from documentary records and compared with dental age estimated using Demirjian's staging system and Franco's Brazilian model. Mean error (ME), mean absolute error (MAE), and root mean squared error (RMSE) were calculated and complemented by Bland – Altman analysis. The mean chronological age was 11.0 ± 2.9 years, while the mean estimated age was 10.8 ± 2.5 years. The overall ME was 0.18 years (0.06 males, 0.29 females). The MAE was 0.70 years (0.67 males, 0.73 females), with the best performance between 7 and 10.99 years (< 0.5 years). RMSE values increased in older groups, reaching > 1.0 year after age 13.99. Bland–Altman plots showed a transition from overestimation in younger ages to underestimation in older ages, earlier in females. The Brazilian model was adequate for the studied population, particularly for individuals aged 7–10.99 years, with overall differences below one year.
已经提出了几种用于牙齿年龄估计的放射学方法,其中Willems模型和Franco等人(2024)对其进行的巴西调整显示出有希望的结果。然而,巴西的模式还没有在东北部的人群中进行测试。这项研究的目的是在巴西东北部阿拉戈斯的儿童和青少年样本中验证佛朗哥的模型。对500张年龄6-15.99岁的全景x线片(男性250张,女性250张)进行回顾性横断面研究,平均间隔1年。从文献记录中计算出实足年龄,并将使用Demirjian的分期系统和Franco的巴西模型估计的牙齿年龄进行比较。计算平均误差(ME)、平均绝对误差(MAE)和均方根误差(RMSE),并辅以Bland - Altman分析。平均实足年龄11.0±2.9岁,平均预估年龄10.8±2.5岁。总ME为0.18年(男性0.06,女性0.29)。MAE为0.70岁(男性0.67岁,女性0.73岁),7 ~ 10.99岁表现最佳(13.99岁后1.0岁)。Bland-Altman图显示了从年轻人的高估到老年人的低估的转变,在女性中更早。巴西模型适用于研究人群,特别是7-10.99岁的个体,总体差异小于1岁。
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引用次数: 0
Estimation of stature from hand length and hand breadth in undergraduate medical students: An anthropometric study 用手长和手宽估算医科本科生的身高:一项人体测量学研究
Q3 Medicine Pub Date : 2025-11-07 DOI: 10.1016/j.morpho.2025.101080
Niraj Pandey , Navindra Phuyal , Anusuya Shrestha , Anup Pandeya , Ananda Kumar Mishra , Kumar Bhushal

Background

Stature, a determinant that aids in personal identification, can be estimated using measurements of various body parts. Forensic scientists often find dismembered body parts in trenches, rubbish and elsewhere that are brought for examination, leading to challenges in identification. This study measured the length and breadth of both right and left hands and the stature of the participants, aiming to develop more accurate linear regression equations for stature estimation. Regression equations may be affected by differences in measurements of right and left sides and study done in Nepalese population previously, lack to address this issue.

Methods

This is a cross-sectional descriptive study in which 195 medical students aged 18 to 24 were enrolled, and measurement of stature was done by stadiometer and hand length and breadth by vernier calliper, after an informed written consent was obtained.

Results

Mean stature was higher in males (170.2 ± 5.8 cm) as compared to females (159 ± 7.2 cm). Mean length and breadth of both right and left hands were also found to be higher in males when compared with females. The model summary of the multiple linear regression analysis deduced that R is 0.805, which indicates that there is a strong positive correlation between stature and hand dimensions with a Standard Error of Estimates of 5.083 cm. Hand length and hand breadth together, may be powerful predictor of stature, as indicated by the greater R value and higher explained variance.

Conclusions

Estimation of stature can be done using regression equation derived from hand length and hand breadth. Stature is a changing entity and is influenced by genetics and nutritional status. Future studies can be done taking these factors into consideration and also including a larger population size.
身高是一个有助于个人识别的决定因素,可以通过测量身体的各个部位来估计。法医科学家经常在战壕、垃圾和其他地方发现被肢解的身体部位,这些部位被带去检查,这给身份鉴定带来了挑战。本研究测量了被试的左手和右手的长度和宽度以及身高,旨在建立更准确的身高估计线性回归方程。回归方程可能受到左右两侧测量差异的影响,并且以前在尼泊尔人口中进行的研究缺乏解决这一问题。方法采用横断面描述性研究方法,选取195名年龄在18 ~ 24岁的医学生,经知情书面同意,采用体尺测量身高,游标卡尺测量手长、手宽。结果男性平均身高(170.2±5.8 cm)高于女性(159±7.2 cm)。男性右手和左手的平均长度和宽度也比女性高。多元线性回归分析的模型总结得出R为0.805,表明身高与手的尺寸存在较强的正相关关系,估计的标准误差为5.083 cm。手长和手宽一起,可能是身高的有力预测因子,正如更大的R值和更高的解释方差所表明的那样。结论用手长、手宽的回归方程可以估算身高。身材是一个不断变化的实体,受遗传和营养状况的影响。未来的研究可以考虑到这些因素,也包括更大的人口规模。
{"title":"Estimation of stature from hand length and hand breadth in undergraduate medical students: An anthropometric study","authors":"Niraj Pandey ,&nbsp;Navindra Phuyal ,&nbsp;Anusuya Shrestha ,&nbsp;Anup Pandeya ,&nbsp;Ananda Kumar Mishra ,&nbsp;Kumar Bhushal","doi":"10.1016/j.morpho.2025.101080","DOIUrl":"10.1016/j.morpho.2025.101080","url":null,"abstract":"<div><h3>Background</h3><div>Stature, a determinant that aids in personal identification, can be estimated using measurements of various body parts. Forensic scientists often find dismembered body parts in trenches, rubbish and elsewhere that are brought for examination, leading to challenges in identification. This study measured the length and breadth of both right and left hands and the stature of the participants, aiming to develop more accurate linear regression equations for stature estimation. Regression equations may be affected by differences in measurements of right and left sides and study done in Nepalese population previously, lack to address this issue.</div></div><div><h3>Methods</h3><div>This is a cross-sectional descriptive study in which 195 medical students aged 18 to 24 were enrolled, and measurement of stature was done by stadiometer and hand length and breadth by vernier calliper, after an informed written consent was obtained.</div></div><div><h3>Results</h3><div>Mean stature was higher in males (170.2<!--> <!-->±<!--> <!-->5.8<!--> <!-->cm) as compared to females (159<!--> <!-->±<!--> <!-->7.2<!--> <!-->cm). Mean length and breadth of both right and left hands were also found to be higher in males when compared with females. The model summary of the multiple linear regression analysis deduced that R is 0.805, which indicates that there is a strong positive correlation between stature and hand dimensions with a Standard Error of Estimates of 5.083<!--> <!-->cm. Hand length and hand breadth together, may be powerful predictor of stature, as indicated by the greater R value and higher explained variance.</div></div><div><h3>Conclusions</h3><div>Estimation of stature can be done using regression equation derived from hand length and hand breadth. Stature is a changing entity and is influenced by genetics and nutritional status. Future studies can be done taking these factors into consideration and also including a larger population size.</div></div>","PeriodicalId":39316,"journal":{"name":"Morphologie","volume":"110 368","pages":"Article 101080"},"PeriodicalIF":0.0,"publicationDate":"2025-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145467910","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
CT-based morphological and morphometric assessment of the mandibular incisive canal and genial tubercles for sexual dimorphism 基于ct的下颌切管和和性结节两性异形的形态学和形态计量学评价
Q3 Medicine Pub Date : 2025-10-24 DOI: 10.1016/j.morpho.2025.101077
Alessandra Fragoso Vieira de Alencar , Daniel Almeida Ferreira Barbosa , Lúcio Mitsuo Kurita , Filipe Nobre Chaves , Frederico Sampaio Neves , Fabrício Mesquita Tuji , Esther Carneiro Ribeiro , André Ferreira Leite , Paulo Goberlânio de Barros Silva , Fábio Wildson Gurgel Costa
This study aimed to perform a morphological and morphometric assessment of the mandibular incisive canal (MIC) and genial tubercles (GT) using computed tomography, in order to develop sex estimation formulas based on linear measurements in a Brazilian adult sample. An observational study was carried out using 300 cone-beam computed tomography (CBCT) scans from a pre-existing image database, comprising individuals aged between 21 and 50 years, equally distributed between the sexes. The formulas for sex estimation presented, respectively, sensitivity and specificity of up to 71.3% and 80% % for MIC, and 67.3% and 72% for GT. The MIC presented a formula for estimating sex with a higher area under the ROC curve (AUC) (0.829 ± 0.024) than the GT (0.760 ± 0.027). Discriminant analysis was statistically significant (P < 0.001) and found a higher canonical correlation value for MIC (0.638) compared to GT (0.580). The developed formulas for estimating sex based on linear tomographic measurements of anterior mandible landmarks (MIC and GT) show reasonable sensitivity and specificity. The MIC formula demonstrated higher sensitivity, specificity, and overall performance compared to the GT formula.
本研究旨在使用计算机断层扫描对下颌切管(MIC)和下颌结节(GT)进行形态学和形态计量学评估,以便根据巴西成人样本的线性测量开发性别估计公式。一项观察性研究使用300个锥形束计算机断层扫描(CBCT)从一个预先存在的图像数据库中进行扫描,包括年龄在21至50岁之间的个体,在性别之间均匀分布。MIC的敏感性和特异性分别为71.3%和80%,GT的敏感性和特异性分别为67.3%和72%。MIC的ROC曲线下面积(AUC)(0.829±0.024)高于GT(0.760±0.027)。判别分析具有统计学意义(P < 0.001), MIC的典型相关值(0.638)高于GT的典型相关值(0.580)。开发的公式估计性别基于线性断层扫描测量的前颌骨标志(MIC和GT)显示合理的敏感性和特异性。与GT配方相比,MIC配方具有更高的灵敏度、特异性和整体性能。
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引用次数: 0
Origin of the human-specific flexor Carpi Radialis Brevis muscle: A rare embryological case study 人类特有的桡侧腕屈肌的起源:一个罕见的胚胎学案例研究。
Q3 Medicine Pub Date : 2025-10-22 DOI: 10.1016/j.morpho.2025.101079
S. Durand
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引用次数: 0
Tridimensional analysis of the normal upper airways in non-dentofacial deformity patients 非牙面畸形患者正常上气道的三维分析
Q3 Medicine Pub Date : 2025-10-21 DOI: 10.1016/j.morpho.2025.101078
S.M. Costa, B.C. Ribeiro, P.F. Bertelli Trivellato, C.E. Sverzut, A.E. Trivellato

Objectives

To establish normative three-dimensional airway measurements in patients without dentofacial deformities (DDFs) or obstructive sleep apnea (OSA), and to identify anatomical and epidemiological factors associated with airway volume.

Methods

This retrospective cross-sectional study analyzed 200 CT scans from patients aged 18–80 years, with no diagnosis of DDF, OSA, or craniofacial syndromes. Scans were processed using artificial intelligence software (NEMOFAB) for automatic segmentation and volumetric analysis. Variables assessed included age, sex, neck circumference, and craniofacial linear distances (Menton–Hyoid, Menton–3rd Vertebrae, PNS–Hyoid, Soft Palate–Hyoid). Airway volume and Minimum Axial Area (MAA) were measured and compared using ANOVA.

Results

The mean airway volume was 24,724.8 mm3. Younger individuals exhibited greater airway volumes, especially among males. Patients with a neck circumference < 40 cm had a 28.04% reduction in airway volume. Longer PNS–Hyoid, SPH, and M3 V distances were positively associated with increased airway volume, while Menton–Hyoid showed minimal impact. A low MAA (< 110 mm2) correlated with a significant volume decrease. Key predictors identified were age, neck circumference, PNS–Hyoid, SPH, and M3 V distances.

Conclusions

In patients without DDF or OSA, airway volume is significantly influenced by demographic and anatomical variables. These normative data provide a baseline for comparison in orthognathic surgical planning and respiratory risk assessment.

Clinical Relevance

Understanding normal airway morphology and its anatomical determinants enhances screening for patients at risk of airway compromise and may guide individualized treatment strategies in oral and maxillofacial surgery.
目的建立无牙面畸形(ddf)或阻塞性睡眠呼吸暂停(OSA)患者气道三维测量标准,并探讨与气道容积相关的解剖学和流行病学因素。方法本回顾性横断面研究分析了200例18-80岁患者的CT扫描,未诊断为DDF、OSA或颅面综合征。扫描使用人工智能软件(NEMOFAB)进行自动分割和体积分析。评估的变量包括年龄、性别、颈围和颅面直线距离(门通舌骨、门通第三椎骨、pns -舌骨、软腭舌骨)。测量气道容积和最小轴向面积(MAA),并用方差分析进行比较。结果平均气道容积为24724.8 mm3。年轻个体表现出更大的气道容积,尤其是在男性中。颈围为40 cm的患者气道体积减少28.04%。较长的pns -舌骨、SPH和M3 - V距离与气道容积增加呈正相关,而门通-舌骨的影响最小。低MAA (< 110 mm2)与体积显著减小相关。确定的关键预测因素是年龄、颈围、pns -舌骨、SPH和M3 - V距离。结论在无DDF或OSA的患者中,气道容积受人口统计学和解剖学变量的显著影响。这些规范性数据为正颌手术计划和呼吸风险评估的比较提供了基线。了解正常气道形态及其解剖学决定因素可提高对气道受损风险患者的筛查,并可指导口腔颌面外科个体化治疗策略。
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引用次数: 0
CT evaluation of the internal acoustic canal and safe drilling triangle morphometry in relation to temporal pneumatization and age for gender determination and hearing preservation in surgery 内声道和安全钻孔三角形形态测量术在手术中与颞部气化和年龄的关系的CT评价,用于性别确定和听力保护。
Q3 Medicine Pub Date : 2025-10-14 DOI: 10.1016/j.morpho.2025.101076
H. Admış , G. Açar , A. Emine Çiçekcibaşı , D. Aydoğdu

Background

We evaluated internal acoustic canal (IAC) and safe drilling triangle (SDT) morphometry to ascertain sexual dimorphism of the petrous portion (PP), using discriminant function analysis (DFA). We also aimed to elucidate the influence of temporal pneumatization (TP), biological sex, age, and laterality on these parameters.

Methods

We measured the dimensions of the IAC, the vertical (IAOvd) and horizontal (IAOhd) diameters of the internal acoustic opening (IAO), lateral angle (LA), medial bending angle (MBA), IAC angle, dimensions and volume of the SDT, and SD angle in 208 CT images. TP was classified into 3 types: conchal, middle, and full. Laterality, sex, and age group differences were determined using paired and independent t tests, and one-way Anova test, respectively.

Results

All linear parameters were higher on left side, while angular parameters except IAC angle were larger on right side. Right IAOvd and LA also achieved the highest overall accuracy rates of 72.1%–69.7% in univariate DFA. Right IAOvd and LA also had the highest AUC (0.765 and 0.764). In multivariate DFA, the combination of IAOvd, LA, and MBA enables sex estimation with an accuracy of 75%. As the PP became more pneumatized, all parameters increased significantly, while they declined with advancing age.

Conclusion

The IAOvd, LA, and MBA can be applied in practice when alternative dimorphic indicators are unavailable for biological sex estimation in a contemporary Turkish population. The fact of verifying TP, sex, and age differences in SDT dimensions indicates the need for greater attention to preoperative CT assessment during surgical procedures.
背景:我们使用判别函数分析(DFA)评估了内声管(IAC)和安全钻孔三角形(SDT)形态测定法,以确定岩石部分(PP)的性别二态性。我们还旨在阐明颞部气化(TP)、生理性别、年龄和侧侧性对这些参数的影响。方法:在208张CT图像中测量IAC的尺寸、内声道开口(IAO)的垂直(IAOvd)和水平(IAOhd)直径、侧角(LA)、内侧弯曲角(MBA)、IAC角、SDT的尺寸和体积、SD角。TP分为三种类型:鼻甲型、中等型和完全型。横向性、性别和年龄组差异分别采用配对和独立t检验和单因素方差分析来确定。结果:左侧各线性参数均较高,右侧除IAC角外各角度参数均较高。右IAOvd和LA在单变量DFA中也达到了最高的总体准确率,为72.1% ~ 69.7%。右IAOvd和LA的AUC也最高,分别为0.765和0.764。在多元DFA中,IAOvd、LA和MBA的组合使性别估计的准确率达到75%。随着PP充气程度的增加,各参数均显著增加,但随年龄的增长而下降。结论:IAOvd, LA和MBA可以应用于实践中,当替代二态指标不可用于当代土耳其人群的生物性别估计。验证TP、性别和年龄在SDT维度上的差异表明,在手术过程中需要更加重视术前CT评估。
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引用次数: 0
Comparative neuroprotective efficacy of N-acetylcysteine and naringin in lead-induced neurotoxicity: Restoration of BDNF, neurotransmitters, and cognitive function n -乙酰半胱氨酸和柚皮苷在铅诱导的神经毒性中的神经保护作用比较:BDNF、神经递质和认知功能的恢复
Q3 Medicine Pub Date : 2025-10-03 DOI: 10.1016/j.morpho.2025.101075
Havila Hasini Sreevaram , Animireddy Kishore , Senthilkumar Sivanesan , Madhupriya Prabhakaran , Balaji Karunakaran , Sankaran Ponnusamy Kasirajan , Ashok Kumar Jyothi , Yuvaraj Maria Francis

Background

Exposure to lead acetate is reported to induce neurotoxicity associated with cognitive dysfunction, neurotransmitter dysfunction, oxidative stress, neuroinflammation, and neuronal damage in the hippocampus. Flavonoids and other natural compounds possessing antioxidant and neuroprotective properties can be of therapeutic interest. In the current study, naringin's protective property as a flavonoid was compared with that of N-acetylcysteine (NAC) against lead-induced neurotoxicity in rats.

Methods

Adult rats were randomly distributed into control, lead acetate-treated, lead + NAC-treated, lead + low-dose naringin, and lead + high-dose naringin groups, each group containing 6 animals. The Novel Object Recognition (NOR) test was used for the evaluation of cognitive function. Biochemical analysis of hippocampal glutamate, acetylcholine, Brain-Derived Neurotrophic Factor (BDNF), Nuclear factor erythroid 2-related factor 2 (Nrf2), pro-inflammatory markers (IL-6, GFAP), and serum lead levels was done. Histopathological analysis of hippocampal sections by crystal violet staining was done.

Results

Exposure to lead acetate-induced severe neurotoxicity in the guise of compromised recognition memory, reduced glutamate and acetylcholine content, reduced BDNF and Nrf2 expression, increased IL-6 and GFAP content, and severe hippocampal neuronal damage. NAC treatment effectively reversed cognitive function, neurotransmitter content, neurotrophic factors, and diminished neuroinflammation. Dose-dependent neuroprotection was afforded by naringin, where the high-dose group had better recovery in all the parameters than the low-dose group. Interestingly, high-dose naringin was similar to or even larger than that of NAC's neuroprotection, normalization of hippocampal histoarchitecture, enhancement of antioxidant defense, and decrease in pro-inflammatory markers and serum lead levels.

Conclusion

Lead acetate causes profound neurotoxicity on cognition, neurotransmission, oxidative stress, and inflammation. Naringin, especially at high doses, exhibits highly potent neuroprotective effects, such as NAC, preventing lead-induced cognitive dysfunction and hippocampal pathology by displaying antioxidant, anti-inflammatory, and neurotrophic effects. The results propose naringin as a potential natural drug candidate for preventing and/or treating lead-induced neurotoxicity.
据报道,暴露于醋酸铅可诱导与认知功能障碍、神经递质功能障碍、氧化应激、神经炎症和海马神经元损伤相关的神经毒性。类黄酮和其他具有抗氧化和神经保护特性的天然化合物可用于治疗。本研究比较了柚皮苷作为类黄酮与n -乙酰半胱氨酸(NAC)对铅致大鼠神经毒性的保护作用。方法将成年大鼠随机分为对照组、醋酸铅处理组、铅+ nac处理组、铅+低剂量柚皮苷组和铅+高剂量柚皮苷组,每组6只。新目标识别(NOR)测试用于评估认知功能。生化分析海马谷氨酸、乙酰胆碱、脑源性神经营养因子(BDNF)、核因子-红细胞2相关因子2 (Nrf2)、促炎标志物(IL-6、GFAP)和血清铅水平。结晶紫染色对海马切片进行组织病理学分析。结果暴露于醋酸铅诱导了严重的神经毒性,表现为识别记忆受损,谷氨酸和乙酰胆碱含量降低,BDNF和Nrf2表达降低,IL-6和GFAP含量升高,海马神经元严重损伤。NAC治疗有效地逆转了认知功能、神经递质含量、神经营养因子,并减轻了神经炎症。柚皮苷具有剂量依赖性的神经保护作用,高剂量组在各项指标上的恢复优于低剂量组。有趣的是,高剂量柚皮苷的神经保护作用与NAC相似,甚至大于NAC对海马组织结构的正常化,抗氧化防御的增强,促炎标志物和血清铅水平的降低。结论醋酸铅对认知、神经传递、氧化应激和炎症具有较强的神经毒性。柚皮苷,特别是在高剂量时,表现出高度有效的神经保护作用,如NAC,通过显示抗氧化、抗炎和神经营养作用,预防铅诱导的认知功能障碍和海马病理。结果表明柚皮苷是预防和/或治疗铅致神经毒性的潜在天然候选药物。
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Morphologie
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