Person: Maranillo Alcaide, Eva
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First Name
Eva
Last Name
Maranillo Alcaide
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Medicina
Department
Anatomía y Embriología
Area
Anatomía y Embriología Humana
Identifiers
16 results
Search Results
Now showing 1 - 10 of 16
Item Patterns of the circumflex femoral arteries revisited(Clinical Anatomy, 2006) Vázquez Osorio, María Teresa; Murillo González, Jorge Alfonso; Maranillo Alcaide, Eva; Parkin, Ian; Sañudo Tejero, José RamónKnowledge of variations of the circumflex femoral arteries is important when undertaking clinical procedures within the femoral region and in hip joint replacement. Since the 19th century, many different patterns have been proposed to classify their origins. This work studied a statistically reliable sample, the lower limbs of 221 embalmed human cadavers (equal right–left and approximately equal sex distributions), and reviewed the previous literature to propose a unified and simple classification that will be useful to clinicians. Statistical comparisons were made using the chi(2) test. The medial and lateral circumflex femoral arteries have been classified into three different patterns based on the levels of their origin. Distribution related to sex and side was also studied. Pattern I: Both arteries arose from the deep femoral artery (346 cases, 78.8%). This pattern was more frequent in females, P = 0.01. There was no significant difference between sides. Type Ia, medial circumflex femoral artery origin was proximal to the lateral circumflex femoral artery origin (53.2%); Type Ib, lateral circumflex femoral artery origin was proximal to medial circumflex femoral artery origin (23.4%); Type Ic, both arteries arose from a common trunk (23.4%). Pattern II: One of the arteries arose from the femoral artery and the other from the deep femoral artery (90 cases, 20.5%). Type IIa, the medial circumflex femoral artery arose from the femoral artery (77.8%) and Type IIb, the lateral circumflex femoral artery arose from the femoral artery (22.2%). There were no significant differences between sexes or sides. Pattern III: Both arteries arose from the femoral artery (2 cases, 0.5%). In every disposition there was a significantly higher prevalence of unilateral rather than bilateral occurrence. In one dissection the medial circumflex femoral artery was absent. Awareness of these variations could avoid unexpected injuries.Item The human Laryngeal Innervation. Revisited-The Role pf the Neural Connections(The Anatomical Record, 2018) Martín Oviedo, Carlos; Maranillo Alcaide, Eva; Sañudo Tejero, José Ramón; Pérez Lloret, Pilar; Verdu Navarro, Enrique; Martinez Guirado, Tomas; Alvarez Montero, Oscar; Gomez Martin-Zarco, Jose Manuel; Vazquez Osorio, TeresaIn spite that vascular inconvenients or immunological rejections have been solved in relation with larynx transplant, a successful functional reinnervation has not been achieved. Some studies have suggested that laryngeal nerve connection may contain motor fibers, which could explain unexpected evoked responses in electromyographic studies or the different positions adopted of the vocal folds after similar nerve lesions. Ten patients with unexpected evoked responses after laryngeal nerve stimulation were selected. All the patients underwent a total laryngectomy due to oncological causes. In every case, laryngeal nerve connections were observed. All of them were morphologic and histologic processed for choline-acetyltransferase immunohistochemistry. The presence of motor axons in the nerve connections has been demonstrated, which would explain that the motor innervation to the laryngeal muscles could be dual through these variable connections. This also would justify the difficulty of carrying out laryngeal nerve reinnervation procedures.Item Microdissection of the Human Renal Nervous System. Implications for Performing Renal Denervation Procedures(Hypertension, 2020) García Touchard, Arturo; Maranillo Alcaide, Eva; Mompeo, Blanca; Sañudo Tejero, José RamónDespite the use of renal denervation to treat hypertension, the anatomy of the renal nervous system remains poorly understood. We performed a detailed quantitative analysis of the human renal nervous system anatomy with the goal of optimizing renal denervation procedural safety and efficacy. Sixty kidneys from 30 human cadavers were systematically microdissected to quantify anatomic variations in renal nerve patterns. Contrary to current clinical perception, not all renal innervation followed the main renal artery. A significant portion of the renal nerves (late arriving nerves) frequently reached the kidney (73% of the right kidney and 53% of the left kidney) bypassing the main renal artery. The ratio of the main renal artery length/aorta-renal hilar distance proved to be a useful variable to identify the presence/absence of these late arriving nerves (odds ratio, 0.001 (95% CI, 0.00002–0.0692; P: 0.001) with a cutoff of 0.75 (sensitivity: 0.68, specificity: 0.83, area under ROC curve at threshold: 0.76). When present, polar arteries were also highly associated with the presence of late arriving nerve. Finally, the perivascular space around the proximal main renal artery was frequently occupied by fused ganglia from the solar plexus (right kidney: 53%, left kidney: 83%) and/or by the lumbar sympathetic chain (right kidney: 63%, left kidney: 60%). Both carried innervation to the kidneys but importantly also to other abdominal and pelvic organs, which can be accidentally denervated if the proximal renal artery is targeted for ablation. These novel anatomic insights may help guide future procedural treatment recommendations to increase the likelihood of safely reaching and destroying targeted nerves during renal denervation procedures.Item Connections between postparotid terminal branches of the facial nerve: An immunohistochemistry study(Clinical Anatomy, 2022) Martínez Pascual, Paula; Pérez Lloret, Pilar; Maranillo Alcaide, Eva; Sanz García, Carlos; Simón de Blas, Clara; Sañudo Tejero, José Ramón; Konschake, Marko; Porzionato, Andrea; De Caro, Raffaele; Macchi, VeronicaIt has been assumed that connections between the postparotid terminal branches of the facial nerve are purely motor. However, the nature of their fibers remains unexplored. The aim of this study is to determine whether these connections comprise motor fibers exclusively. In total 17 connections between terminal facial nerve branches were obtained from 13 different facial nerves. Choline acetyltransferase antibody (ChAT) was used to stain the fibers in the connections and determine whether or not all of them were motor. All connections contained ChAT positive and negative fibers. The average number of fibers overall was 287 (84–587) and the average proportion of positive fibers was 63% (37.7%–91.5%). In 29% of the nerves, >75% of the fibers were ChAT+ (strongly positive); in 52.94%, 50%–75% were ChAT+ (intermediately positive); and in 17.65%, <50% were ChAT+ (weakly positive). Fibers traveling inside the postparotid terminal cranial nerve VII branch connections are not exclusively motor.Item Fat: Quality, or Quantity? What Matters Most for the Progression of Metabolic Associated Fatty Liver Disease (MAFLD)(Biomedicines, 2021) Estévez-Vázquez, Olga; Benedé-Ubieto, Raquel; Guo, Feifei; Gómez-Santos, Beatriz; Aspichueta, Patricia; Reissing, Johanna; Bruns, Tony; Sanz-García, Carlos; Sydor, Svenja; Bechmann, Lars P; Maranillo Alcaide, Eva; Sañudo Tejero, José Ramón; Vázquez Osorio, María Teresa; Lamas-Paz, Arantza; Morán, Laura; Mazariegos, Marina S; Ciudin, Andreea; Pericàs, Juan M.; Peligros, María Isabel; Vaquero, Javier; Martínez-Naves, Eduardo; Liedtke, Christian; Regueiro González-Barros, José Ramón; Trautwein, Christian; Bañares Cañizares, Rafael; Cubero Palero, Francisco Javier; Nevzorova, Yulia A.Objectives: Lately, many countries have restricted or even banned transfat, and palm oil has become a preferred replacement for food manufacturers. Whether palm oil is potentially an unhealthy food mainly due to its high content of saturated Palmitic Acid (PA) is a matter of debate. The aim of this study was to test whether qualitative aspects of diet such as levels of PA and the fat source are risk factors for Metabolic Syndrome (MS) and Metabolic Associated Fatty Liver Disease (MAFLD). Methods: C57BL/6 male mice were fed for 14 weeks with three types of Western diet (WD): 1. LP-WD—low concentration of PA (main fat source—corn and soybean oils); 2. HP-WD—high concentration of PA (main fat source—palm oil); 3. HP-Trans-WD—high concentration of PA (mainly transfat). Results: All types of WD caused weight gain, adipocyte enlargement, hepatomegaly, lipid metabolism alterations, and steatohepatitis. Feeding with HP diets led to more prominent obesity, hypercholesterolemia, stronger hepatic injury, and fibrosis. Only the feeding with HP-Trans-WD resulted in glucose intolerance and elevation of serum transaminases. Brief withdrawal of WDs reversed MS and signs of MAFLD. However, mild hepatic inflammation was still detectable in HP groups. Conclusions: HP and HP-Trans-WD play a crucial role in the genesis of MS and MAFLD.Item The bronchial segmentation and its anatomical variations. A clinical-anatomic and bronchoscopy study(Annals of Anatomy, 2021) Martín Ruiz, Silvia; Gutiérrez Collar, Christian; Forcén Vicente De Vera, Elena; Bernabé Barrios, María José; Simón de Blas, Clara; Konschake, Marko; Sañudo Tejero, José Ramón; Maranillo Alcaide, EvaThe development in interventional respiratory medicine entails the need of bronchial anatomical knowledge, whose variations assume their greatest importance nowadays. The aim of this study was to describe the frequency of these variations and to analyze the bronchial lengths, barely registered before in literature. This observational descriptive study (from June 2018 until April 2019) was conducted in a sample of 17 pairs of lungs, which were dissected and measured at the Cadaver Donation Centre (Universidad Complutense, Madrid), and a second sample of 50 bronchoscopies, performed at the San Carlos Clinic Hospital, which were analyzed during the procedure. Our results show that there are no significant differences in the incidence of variations by sex in any of both samples, and neither in the average length of any bronchus by sex nor lobar pattern. Left main bronchus presents the longest length and left upper lobe bronchus the shortest. The highest percentage of variations is contained in the right lower lobe (25.4%), and the most frequent variation in the subsuperior bronchus (B*) (19.4%). The middle lobe and the left lower lobe present the lowest percentage of variations (11.9%). Only 37.3% of the pairs of lungs/patients did not have any anatomical variation in the general sample. Despite of the small size of the sample, results show a high percentage of variations and a minority of completely normal pairs of lungs, which invites us to reflect about the probable high prevalence of variations in the general population. Further studies with greater samples are needed to confirm our hypothesis.Item Atheromatosis of the brain-supplying arteries: Circle of Willis, basilar, vertebral and their branches(Annals of Anatomy, 2022) Llopis, Guillermo; Quinones, Sara; Konschake, Marko; Simon De Blas, Clara; Hernández, Lorenzo Mauricio; Abramovic, A; Viñuela Prieto, José Manuel; Sañudo Tejero, José Ramón; Tubbs, Richard Shane; Maranillo Alcaide, EvaPurpose: Atherosclerotic plaques in the brain-supplying arteries are slowly-developing alterations of vascular structures that can lead to neurological impairment due to stenosis and insufficient oxygenation of eloquent brain areas. The aim of this study is to provide detailed demographic information related to the incidence of atherosclerotic plaques in the cerebral arteries. Material and methods: Forty-eight circles of Willis (21 men, 21 women, mean age: 70.26, six samples unknown) were macroscopically analyzed for length, diameter, and presence of atherosclerotic plaques. Statistical analysis was used to identify potential differences in the locations and frequencies of atherosclerotic plaques in relation to age and sex. Results: The study sample revealed 261 atherosclerotic plaques. The key findings were significant correlations between plaque development and age and between plaque location and age; however, there was no significant sex difference. Conclusion: The upper and lower branches of the middle cerebral artery (MCA) were novel locations predisposing to plaque development. A cut-off value at 60 years revealed a significant difference in plaque development and distribution. There were no significant sex differences in the occurrence of atherosclerotic plaques.- Project number: 353
Item Elaboración de un sistema de evaluación continua y simultánea para todos los subgrupos prácticos de anatomía, mediante la aplicación Kahoot(2022) Maranillo Alcaide, Eva; Aragonés Maza, Paloma; Quiñones Garrido, Sara; Rodríguez Vázquez, José Francisco; Sañudo Tejero, José Ramón; Valderrama Canales, Francisco; Vázquez Osorio, Teresa; Viejo Tirado, FermínElaboramos una de serie de cuestionarios y retos sobre casos clínicos, imágenes radiológicas, técnicas de disección, relaciones anatómicas, etc. a través de la aplicación Kahoot, que nos han permitido evaluar a todos los alumnos de forma rápida, continua, simultánea y equitativa en cada una de las actividades que se desarrollan durante las prácticas de anatomía humana. A su vez, nos ha permitido controlar la asistencia, en cada una de las actividades, de forma rápida y veraz y detectar aquellos puntos de las prácticas que resultan más dificiles para nuestros alumnos. - Project number: 132
Item Elaboración de un manual de casos clínicos de anatomía radiológica aplicada de la extremidad inferior(2023) Aragonés Maza, Paloma; Maranillo Alcaide, Eva; Quiñones Garrido, Sara; Rodríguez Vázquez, José Francisco; Sañudo Tejero, José Ramón; Valderrama Canales, Francisco José; Vázquez Osorio, María Teresa; Viejo Tirado, Fermín Item The morphogenesis of the renal plexus: renal artery and sympathetic fibers(Clinical Anatomy, 2018) Mompeó, Blanca; Maranillo Alcaide, Eva; García Touchard, Arturo; Sañudo Tejero, José RamónTo examine the origin and development of the renal plexus and its relationship to the renal vessels in embryos and early human fetuses. Serial sections of 34 human embryos (stages 16 to 23 of Carnegie, 4 or 5–8 weeks) and 38 fetuses (9–19 weeks) were analyzed. Throughout the embryonic period, the kidney was not innervated by the renal plexus. Those nerves appeared at the beginning of the early fetal period (9 weeks) as branches given off by the immature autonomic abdominal plexus. The renal nerves started to approach to the kidney during the early fetal period at 9–10 weeks of development. They were distributed in close proximity to the renal arteries and their branches. They were observed first with the settlement of the renal veins. The renal artery is present as a branch of the abdominal aorta at stage 19 (between 6 and 7 weeks) prior to development of the renal plexus. The renal veins were not present during the embryonic period but appeared at the start of the fetal period, along with the renal nerves that emerged from segmented sympathetic para-aortic bodies (SPBs). In conclusion, the renal plexus starts to form during the early fetal period, which coincides with the establishment of the definitive renal veins, 2 weeks after the definitive renal arteries are identified. The disposition of the renal vessels and renal nerves in adults could be explained by the disposition and progress of the structures during prenatal development