Marco Antonio De Angelis

Hospital Santa Marcelina

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Ricardo Luiz Smith

Universidade Federal de São Paulo

Sérgio Ricardo Marques

Universidade Federal de São Paulo

Laís Vieira Bonaldi

Universidade Federal de São Paulo

Sadao Isotani

Universidade de São Paulo

Jarmo Körkkö

Oulu University Hospital

Michael J. McKenna

GlaxoSmithKline (United States)

Fathi Abdel-Baki

Alexandria University

C. Schmitz-Salue

Children's Medical Research Institute

A Tucker

Délégation Paris 6

Ossama Sobhy

Alexandria University

Cooperative Institutions

Universidade Federal de São Paulo

Universidade de São Paulo

Universitäts-HNO-Klinik Heidelberg

Hospital Santa Marcelina

Faculdade Santa Marcelina

Medical University of Vienna

Alexandria University

Fukushima Medical University

Medical University of Graz

University of Padua

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Formaçöes venosas da fossa cubital da criança

Pediatr. mod (1988)

Mariano Del Sol Calderón Marco Antonio De Angelis Paulo Domingos André Bolini

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Developmental Study of the Round Window Region

Cells Tissues Organs (1997)

Laís Vieira Bonaldi Marco Antonio De Angelis Ricardo Luiz Smith

A silicone impression method to study the anatomy of the round window region was used in 102 temporal bones belonging to individuals aged from 4 months of fetal life to 3-year-old children as well as adults. A total of 2,142 measurements of the round window, oval window and round window fossula was made in the molds. The data demonstrate that the round window shows a diameter from 1.21 mm (average for the short axis) to 1.74 mm (average for the long axis) and the circular shape was present in 55% of the adult temporal bones and in 18.18% of the fetal and infantile ones. The adult dimensions of the measured structures are reached during fetal development.

Round window

10.1159/000147961

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Citations (17)

Errata

Oto-Rhino-Laryngologia Nova (2001)

Roberto Stramare Stefano Puggina Filippo Marino H. de Maddalena Michael J. McKenna

10.1159/000069402

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Citations (1)

Acute effects of mechanical ventilation with hyperoxia on the morphometry of the rat

Célia Regina Lopes André L. M. Sales Manuel De João Simões Marco Antonio De Angelis

Background: Prolonged mechanical ventilatory support (MVS) combined with high oxygen concentrations has a negative impact on diaphragm function. However, the acute effects of MVS with hyperoxia have not been elucidated. Objective: To analyze the acute effects of mechanical ventilation with hyperoxia on the morphometry of the rat diaphragm. Methods: An experimental, prospective study was conducted with Wistar rats (weight: 400±20 g), which were randomly allocated to two groups. The control group (n=4) was anesthetized, tracheostomized and kept spontaneously breathing room air for 90 minutes. The experimental group (n=5) was also anesthetized, curarized, tracheostomized and kept in controlled mechanical ventilation for the same amount of time. Both groups were submitted to median thoracotomy for sample collection of costal fibers from the diaphragm muscle, which were sectioned every 5 µm and stained with hematoxylin and eosin for the morphometric study. Independent Student's t tests were employed to investigate differences between groups, with a significance level of p<0.05. Results: There were no signs of acute muscle lesions, however the blood capillaries became dilated in the experimental group. The mean morphometric data related to the maximum cross-sectional diameter of the diaphragm costal fibers were 61.78 ±17.79 µm and 70.75±9.93 µm (p=0.045) for the control and experimental groups, respectively. Conclusions: Short-term mechanical ventilation with hyperoxia led to significant microvascular and muscle changes, which may reflect the onset of an inflammatory process.

Hyperoxia

Diaphragm (acoustics)

Diaphragm muscle

Thoracotomy

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Morfologia do corpo ciliar de Gallus domesticus submetidos a iluminacao continua

Marco Antonio De Angelis

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Multiple variation of right renal and gonadal vascularization: report of two cases

Jornal Vascular Brasileiro (2024)

Marcelo Calil Burihan Silvio Antônio Garbelotti Paulo Laino Cândido Rodrigo Barbosa de Souza Osvaldo Pelozo

Abstract We present two cases of multiple anatomical variations of the renal and gonadal vessels. The first case presented duplication of the renal vein and the presence of an accessory renal artery. However, the most interesting fact, in this case, was that the right gonadal vein emptied into the inferior right renal vein instead of ending in the inferior vena cava as would typically be the case. In the second case, we also found an accessory renal artery and the right gonadal vein emptied at the exact junction between the right renal vein and the inferior vena cava. Clinicians and surgeons should be familiar with anatomical variations to provide an accurate diagnosis during preoperative studies and to avoid surprises in abdominal surgical procedures.

Renal vein

10.1590/1677-5449.202300442

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Citations (1)

Orbital asymmetry in development: an anatomical study

Orbit (2009)

Fernando Seiji Rafael Saviolo Moreira Marco Antonio De Angelis Ricardo Luiz Smith Chairman

The aim of this study was to analyze the human orbital asymmetry during development. One hundred twenty-seven identified human dry skulls, with sex, age, date and cause of death record, in good preservation state, were used. Bones that had evidence of trauma, malformations or other pathology were excluded. The sample was divided into 4 age groups: I – intra-uterine life (n=20), II – newborn up to 2 years old (n=43), III – three up to 20 years old (n=27) and IV – 21 up to 76 years old (n=37). The skulls were photographed in norma frontalis and images were analyzed with the software AutoCAD® 2002 in real scale. The obtained measurements were: greater horizontal diameter (HD), greater vertical diameter (VD), orbital perimeter and orbital base area. All skulls showed asymmetry in all measures, except 4 of them that showed symmetry in VD and perimeter. The asymmetry occurred in all ages, being calculated as a percent rate for VD – 2.73%, HD – 4.48%, area – 4.77% and perimeter – 2.47%. There was predominance in asymmetric rate in female skulls and only in the group II the difference between gender was statistically significant (p<0.05). The right orbit presented larger measures. The asymmetric rate was assumed as the normal anatomic pattern.

Perimeter

Orbit (dynamics)

Age groups

10.3109/01676830903162841

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Citations (19)

ANATOMICAL VARIATIONS OF THE OCCIPITAL ARTERY: RELATE OF TWO CASES

Revista chilena de anatomía (2002)

Sérgio Ricardo Marques Ana María Itezerote Romina Moreira Marco Antonio De Angelis José Carlos Prates

RESUMEN: Debido a la importancia que tienen las variaciones musculares para cirujanos, como tambien para los profesionales del area de las imagenes, describimos dos variaciones de origen de la arteria occipital. Disecamos la region del cuello en 110 cadaveres de individuos, adultos, brasileros de ambos sexos, determinandose el origen, trayecto y diametro de la arteria occipital. La arteria occipital que se origina generalmente de la pared posterior de la arteria carotida externa, a nivel de la arteria facial, fue encontrada en dos casos, originandose muy proxima a la terminacion de la arteria carotida comun, asemejandose mucho a una trifurcacion carotidea. Este modo de origen de la arteria occipital, proximo a la bifurcacion carotidea constituye una variacion anatomica muy rara, como tambien lo demuestra la literatura existente

Occipital artery

10.4067/s0716-98682002000200013

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The External Opening of the Cochlear Aqueduct in Infants and Adults

Oto-Rhino-Laryngologia Nova (2001)

Sérgio Ricardo Marques Laís Vieira Bonaldi Marco Antonio De Angelis Sadao Isotani Ricardo Luiz Smith

Objective: The purpose of the present study is the description of the shape and area of the cochlear aqueduct (CA) opening by means of molds obtained from infant and adult temporal bones. Material and Methods: Through molding techniques the evaluation was performed in 118 temporal bones of infants (5–60 months) and of adults (19–89 years), dimensions and shapes being evaluated through computerized image processing. Results and Conclusions: The data shows that the area of the opening is significantly smaller in children than in adults (7.32 ± 3.32 versus 18.48 ± 6.42 mm2). In infants, in 56% the shape of the opening was triangular; in adults triangularity was 100%. The variability in the shape and size of the CA opening in infants suggests adaptations of the CA opening during cranial growth.

10.1159/000068295

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Citations (2)

Biometric Study of the Optic Canal during Cranial Development

Orbit (2007)

Patricia Almeida Prado Eduardo Cotecchia Ribeiro Marco Antonio De Angelis Ricardo Luiz Smith

To study optic canal dimensions and symmetry during cranial development, 146 silicon rubber left- and right-side models of the optic canal were cast from 51 dry skulls and 22 individual bones. The sample was divided in three age groups: fetuses (including newborns), children and adults with ages ranging from seven months of fetal life to 68-year-old. A digital caliper was used to measure the optic canal orbital and cranial diameters as well as model length. Results for the right and the left sides were, respectively, in millimeters: a) Maximum diameter of the orbital opening: fetuses, 4.68/4.47—children, 5.51/5.41—adults, 5.43/5.34; b) Minimum diameter of the orbital opening: fetuses, 2.89/2.84—children, 3.54/3.61—adults, 3.78/3.73; c) Diameter of the cranial opening: fetuses, 3.79/3.76—children, 4.67/4.72—adults, 5.24/5.43; d) Length of the optic canal: fetuses, 3.27/3.05—children, 3.93/3.71—adults 4.94/5.21. The diameter of the cranial opening of the optic canal increases significantly (p < 0.001) during the fetal period and throughout child and adulthood. The greater and smaller orbital apertures increase during the fetal period and during childhood, keeping the same size in adulthood. Optic canal length increases at some point between childhood and adulthood. Concerning symmetry, the only significant difference found was greater right than left optic canal diameter on the orbital side.

Optic canal

Silicon rubber

Calipers

Orbit (dynamics)

10.1080/01676830600987540

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Citations (10)