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Kaboudi N, Asl SG, Nourani N, Shayanfar A. Solubilization of drugs using beta-cyclodextrin: Experimental data and modeling. Ann Pharm Fr 2024:S0003-4509(24)00008-7. [PMID: 38340807 DOI: 10.1016/j.pharma.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/30/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Many drug candidates fail to complete the entire drug development process because of poor physicochemical properties. Solubility is an important physicochemical property which plays a vital role in various stages of drug discovery and development. Several methods have been proposed to enhance the solubility of drugs, and complex formation with cyclodextrins is among them. Beta-cyclodextrin (βCD) is a common excipient for solubilization of drugs. The aim of this study is to develop the mechanistic QSPR models to predict the solubility enhancement of a drug in the presence of βCD. In this study, the solubility enhancement of some drugs in the presence of 10mM βCD at 25°C was experimentally determined or collected from the literature. Two different models to predict the solubilization by βCD were developed by binary logistic regression using structural properties of drugs with more than 80% accuracy. Polar surface area and excess molar refraction are the main parameters for estimating solubilization by βCD. Moreover, other descriptors related to hydrophobicity and the capability of hydrogen bonding formation of molecules could improve the accuracy of the established models.
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Affiliation(s)
- Navid Kaboudi
- Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Saba Ghasemi Asl
- Student Research Committee, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Nasim Nourani
- Biotechnology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Shayanfar
- Pharmaceutical Analysis Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran.
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Delom F, Le Morvan V, Robert J, Fessart D. [Normal organoids and their applications in cancer research]. Bull Cancer 2021; 109:58-64. [PMID: 34903368 DOI: 10.1016/j.bulcan.2021.11.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Revised: 11/04/2021] [Accepted: 11/12/2021] [Indexed: 11/18/2022]
Abstract
Three-dimensional (3D) culture of organoids from primary cells (wild type) or tumoroids from tumor cells, is used to study the physiological mechanisms in vivo, in order to model normal or tumor tissues more accurately than conventional two-dimensional (2D) culture. The features of this 3D culture, such as the three-dimensional structure, the self-renewal capacity and differentiation are preserved and appropriate to cancer study since their cellular characteristics are very similar to in vivo models. Here, we summarize the recent advances in the rapidly evolving field of organoids and their applications to cancer biology, clinical research and personalized medicine.
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Affiliation(s)
- Frederic Delom
- ARTiSt group, Univ Bordeaux, Inserm, Institut Bergonié, ACTION, U1218, 33000 Bordeaux, France
| | - Valérie Le Morvan
- ARTiSt group, Univ Bordeaux, Inserm, Institut Bergonié, ACTION, U1218, 33000 Bordeaux, France
| | - Jacques Robert
- ARTiSt group, Univ Bordeaux, Inserm, Institut Bergonié, ACTION, U1218, 33000 Bordeaux, France
| | - Delphine Fessart
- ARTiSt group, Univ Bordeaux, Inserm, Institut Bergonié, ACTION, U1218, 33000 Bordeaux, France; Inserm U1242, "chemistry, oncogenesis stress signaling", université Rennes 1, 35000 Rennes, France; Centre de lutte contre le cancer Eugène Marquis, 35000 Rennes, France.
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Sadou Yayé H, Caudron E, Sermet-Gaudelus I, Nicolis I, Prognon P, Pradeau D. Towards harmonization of solutions used for cystic fibrosis diagnosis by nasal potential difference measurements: A formulation approach with CHESS® software. Ann Pharm Fr 2021; 80:26-34. [PMID: 33992643 DOI: 10.1016/j.pharma.2021.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Revised: 05/04/2021] [Accepted: 05/06/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND One diagnosis of cystic fibrosis involves measuring the nasal transepithelial potential difference (NPD) as a complementary technique in the forms of the disease, where the sweat test is non-discriminating. The NPD is measured using solutions with and without chlorides, containing a variety of substances whose activities on nasal mucus membranes are studied or assessed. Among the solutions described in the literature and used in specialized centers, none seems to be best adapted for industrial production for reasons of stability (formulas of the international consensus of Rowe et al. and formulas of Knowles et al.) and/or potential toxicity (formulas of Middleton et al.). OBJECTIVE(S) Defining new formulas, according to those of the international consensus, with greater physicochemical and microbiological stability. METHODS The reformulation tests were conducted on the formulas of Rowe et al., using CHESS® (CHemical Equilibrium of Species and Surfaces) software for modeling aqueous systems that substantially reduced the number of experiments. CHESS® software was first validated using models of ideal and non-ideal solutions. Thereafter, experimentation was carried out for the sake of comparison with theoretical data. RESULTS CHESS® software using models of ideal and non-ideal solutions were validated. The experimentation confirmed the theoretical data, and new formulas were assessed based on their physicochemical (pH, content, Osmolality) and microbiological stability. CONCLUSION The new formulas defined here guarantee excellent physicochemical and microbiological stability of diagnostic solutions, indispensable criteria for harmonizing and comparing results from different specialized centers using NPD measurements. These new formulas apply to the harmonization approach of techniques for measuring the nasal transepithelial potential difference.
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Affiliation(s)
- H Sadou Yayé
- Sorbonne Université, AP-HP, Hôpital Pitié Salpêtrière, Service de Pharmacie, 47-83, boulevard de l'Hôpital, 75013 Paris, France; Université Paris-Saclay, UFR de Pharmacie, Laboratoire Matériaux et Santé, EA 401, 92296, Châtenay-Malabry, France.
| | - E Caudron
- Université Paris-Saclay, Lipides, Systèmes Analytiques et Biologiques, 92296, Châtenay-Malabry, France; Service de Pharmacie, Hôpital Européen Georges Pompidou, APHP, Centre Université-Paris, 20, rue Leblanc, 75015, Paris, France
| | | | - I Nicolis
- UR 7537 BioSTM, Université de Paris, UFR de Pharmacie, 4 avenue de l'Observatoire, Paris, France.
| | - P Prognon
- Université Paris-Saclay, Lipides, Systèmes Analytiques et Biologiques, 92296, Châtenay-Malabry, France; Service de Pharmacie, Hôpital Européen Georges Pompidou, APHP, Centre Université-Paris, 20, rue Leblanc, 75015, Paris, France
| | - D Pradeau
- Agence Générale des Équipements et Produits de Santé, Département de Contrôle Qualité et Développement Analytique, AP-HP, Paris, France
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Caso H, Vigouroux L, Valerio T, Goislard de Monsabert B, Jaloux C, Legré R. Unusual rupture of the middle finger flexor digitorum superficialis tendon in a climber: Biomechanical analysis. Hand Surg Rehabil 2021; 40:643-649. [PMID: 33905942 DOI: 10.1016/j.hansur.2021.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 04/09/2021] [Accepted: 04/14/2021] [Indexed: 11/30/2022]
Abstract
Sport climbing is increasingly popular and consultations by climbers in hand surgery departments are on the increase. The pathologies related to this sport concern essentially the pulley system, tendons being rarely affected. We report the case of a male climber who presented an atypical rupture of the flexor superficialis tendon in his left middle finger sustained when using an atypical climbing grip technique: the "hook grip". This consists in extension of the metacarpophalangeal joints and maximal flexion of the proximal interphalangeal joints with force exerted only on middle phalanx of the middle finger. A biomechanical analysis using finger musculoskeletal modeling was performed to compare the hook grip to other grips, and the patient's recovery performance was assessed. Adapted functional treatment with physiotherapy seems to have been a good option for the treatment of this atypical lesion since the patient recovered normal use of his finger in daily life. He recovered maximal force in climbing holds. The biomechanical analysis confirmed that the atypical "hook grip" was likely at the origin of the rupture, since flexor digitorum superficialis tendon force for this grip is greater than in other climbing grip techniques. The "hook grip" seems to be dangerous and should be used cautiously by climbers to prevent similar pathology. Additionally, the patient should henceforth be careful when climbing, since the biomechanical model showed that the remaining flexor digitorum profundus tendon was overused.
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Affiliation(s)
- H Caso
- Department of Hand and Reconstructive Surgery, La Timone Hospital, Assistance Publique des Hôpitaux de Marseille, 264 Rue Saint Pierre, 13005 Marseille, France.
| | - L Vigouroux
- Aix-Marseille University, CNRS, ISM, 163 Avenue de Luminy, CP 910, 13288 Marseille Cedex 09, France
| | - T Valerio
- Aix-Marseille University, CNRS, ISM, 163 Avenue de Luminy, CP 910, 13288 Marseille Cedex 09, France
| | - B Goislard de Monsabert
- Aix-Marseille University, CNRS, ISM, 163 Avenue de Luminy, CP 910, 13288 Marseille Cedex 09, France
| | - C Jaloux
- Department of Hand and Reconstructive Surgery, La Timone Hospital, Assistance Publique des Hôpitaux de Marseille, 264 Rue Saint Pierre, 13005 Marseille, France
| | - R Legré
- Department of Hand and Reconstructive Surgery, La Timone Hospital, Assistance Publique des Hôpitaux de Marseille, 264 Rue Saint Pierre, 13005 Marseille, France
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Bibault JE, Xing L, Giraud P, El Ayachy R, Giraud N, Decazes P, Burgun A, Giraud P. Radiomics: A primer for the radiation oncologist. Cancer Radiother 2020; 24:403-410. [PMID: 32265157 DOI: 10.1016/j.canrad.2020.01.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE Radiomics are a set of methods used to leverage medical imaging and extract quantitative features that can characterize a patient's phenotype. All modalities can be used with several different software packages. Specific informatics methods can then be used to create meaningful predictive models. In this review, we will explain the major steps of a radiomics analysis pipeline and then present the studies published in the context of radiation therapy. METHODS A literature review was performed on Medline using the search engine PubMed. The search strategy included the search terms "radiotherapy", "radiation oncology" and "radiomics". The search was conducted in July 2019 and reference lists of selected articles were hand searched for relevance to this review. RESULTS A typical radiomics workflow always includes five steps: imaging and segmenting, data curation and preparation, feature extraction, exploration and selection and finally modeling. In radiation oncology, radiomics studies have been published to explore different clinical outcome in lung (n=5), head and neck (n=5), esophageal (n=3), rectal (n=3), pancreatic (n=2) cancer and brain metastases (n=2). The quality of these retrospective studies is heterogeneous and their results have not been translated to the clinic. CONCLUSION Radiomics has a great potential to predict clinical outcome and better personalize treatment. But the field is still young and constantly evolving. Improvement in bias reduction techniques and multicenter studies will hopefully allow more robust and generalizable models.
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Affiliation(s)
- J-E Bibault
- Radiation Oncology Department, hôpital européen Georges-Pompidou, Assistance publique-Hôpitaux de Paris, 20, rue Leblanc, 75015 Paris, France; Université de Paris, 85, boulevard Saint-Germain, 75006 Paris, France; Inserm, UMR 1138, Team 22: Information Sciences to support Personalized Medicine, 15, rue de l'École-de-Médecine, 75006 Paris, France.
| | - L Xing
- Laboratory of Artificial Intelligence in Medicine and Biomedical Physics, Stanford University School of Medicine, 875 Blake Wilbur Drive, 94305-5847 Stanford, CA, USA
| | - P Giraud
- Inserm, UMR 1138, Team 22: Information Sciences to support Personalized Medicine, 15, rue de l'École-de-Médecine, 75006 Paris, France
| | - R El Ayachy
- Inserm, UMR 1138, Team 22: Information Sciences to support Personalized Medicine, 15, rue de l'École-de-Médecine, 75006 Paris, France
| | - N Giraud
- Radiation Oncology Department, CHU de Bordeaux, hôpital Haut-Lévêque, avenue Magellan, 33600 Pessac, France
| | - P Decazes
- Nuclear Medicine Department, centre Henri-Becquerel, 1, rue d'Amiens, 76038 Rouen, France; Quantif, EA 4108, université de Rouen, avenue de l'Université, 76801 Saint-Étienne-du-Rouvray, France
| | - A Burgun
- Université de Paris, 85, boulevard Saint-Germain, 75006 Paris, France; Inserm, UMR 1138, Team 22: Information Sciences to support Personalized Medicine, 15, rue de l'École-de-Médecine, 75006 Paris, France; Biomedical Informatics and Public Health Department, hôpital européen Georges-Pompidou, Assistance publique-hôpitaux de Paris, 20, rue Leblanc, 75015 Paris, France
| | - P Giraud
- Radiation Oncology Department, hôpital européen Georges-Pompidou, Assistance publique-Hôpitaux de Paris, 20, rue Leblanc, 75015 Paris, France; Université de Paris, 85, boulevard Saint-Germain, 75006 Paris, France
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Abstract
Chronic kidney disease causes hyperphosphatemia, which is associated with increased cardiovascular risk and mortality. In patients with end-stage renal disease, haemodialysis allows the control of hyperphosphatemia. During a 4-h haemodialysis session, between 600 and 700mg of phosphate are extracted from the plasma, whereas the latter contains only 90mg of inorganic phosphate. The precise origin of phosphates remains unknown. The modelling of phosphorus transfers allows to predict the outcome after changes in dialysis prescription (duration, frequency) with simple two-compartment models and to describe the transfers between the different body compartments with more complex models. Work using 31P nuclear magnetic resonance spectroscopy performed in animals showed an increase in intracellular phosphate concentration and a decrease in intracellular ATP during a haemodialysis session suggesting an intracellular origin of phosphates.
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Affiliation(s)
- Guillaume Chazot
- Service de néphrologie et exploration fonctionnelle rénale, hôpital Édouard-Herriot, hospices civils de Lyon, 5, place d'Arsonval, 69437 Lyon, France; Université Lyon 1, 43, boulevard du 11-Novembre-1918, 69100 Villeurbanne, France
| | - Sandrine Lemoine
- Service de néphrologie et exploration fonctionnelle rénale, hôpital Édouard-Herriot, hospices civils de Lyon, 5, place d'Arsonval, 69437 Lyon, France; Université Lyon 1, 43, boulevard du 11-Novembre-1918, 69100 Villeurbanne, France; Inserm U1060 OPeRa, Carmen, 59, boulevard Pinel, 69500 Bron, France
| | - Laurent Juillard
- Service de néphrologie et exploration fonctionnelle rénale, hôpital Édouard-Herriot, hospices civils de Lyon, 5, place d'Arsonval, 69437 Lyon, France; Université Lyon 1, 43, boulevard du 11-Novembre-1918, 69100 Villeurbanne, France; Inserm U1060 OPeRa, Carmen, 59, boulevard Pinel, 69500 Bron, France.
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Simon N, Azorin JM, Belzeaux R, Adida M, Kaladjian A. [Modeling for clinical trial in psychiatry: rationale, benefits and limitations]. Encephale 2016; 42:S7-S11. [PMID: 28236996 DOI: 10.1016/S0013-7006(17)30047-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Drug development of new compounds implies to define the dosage as well as the conditions of their use (indication, treatment duration, drug interactions, warnings …). This information requires the identification of the time course response. The decisions made during the clinical phases are now based on mathematical models. These models are continuously described and improved during all phases of the drug development using data collected in healthy volunteers and patients. Their objectives are to describe the most precisely, the link between the compound characteristics (pharmacology), the patient demographics and the effects. Further, the natural history of the disease, the placebo effect and the probability of dropping out will be integrated into the model to optimize the evaluation of the compound. These technical improvements are not only statistical, in the sense that they allow a better understanding of the advantages and pitfalls of the new drug. This article presents these methods used in psychiatry and which will become the new standard of drug evaluation.
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Caruba T, Chevreul K, Zarca K, Cadier B, Juillière Y, Dubourg O, Sabatier B, Danchin N. Annual cost of stable coronary artery disease in France: A modeling study. Arch Cardiovasc Dis 2015; 108:576-88. [PMID: 26433733 DOI: 10.1016/j.acvd.2015.06.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/13/2015] [Accepted: 06/04/2015] [Indexed: 11/30/2022]
Abstract
BACKGROUND Few studies have analyzed the cost of treatment of chronic angina pectoris, especially in European countries. AIM To determine, using a modeling approach, the cost of care in 2012 for 1year of treatment of patients with stable angina, according to four therapeutic options: optimal medical therapy (OMT); percutaneous coronary intervention with bare-metal stent (PCI-BMS); PCI with drug-eluting stent (PCI-DES); and coronary artery bypass graft (CABG). METHODS Six different clinical scenarios that could occur over 1year were defined: clinical success; recurrence of symptoms without hospitalization; myocardial infarction (MI); subsequent revascularization; death from non-cardiac cause; and cardiac death. The probability of a patient being in one of the six clinical scenarios, according to the therapeutic options used, was determined from a literature search. A direct medical cost for each of the therapeutic options was calculated from the perspective of French statutory health insurance. RESULTS The annual costs per patient for each strategy, according to their efficacy results, were, in our models, €1567 with OMT, €5908 with PCI-BMS, €6623 with PCI-DES and €16,612 with CABG. These costs were significantly different (P<0.05). A part of these costs was related to management of complications (recurrence of symptoms, MI and death) during the year (between 3% and 38% depending on the therapeutic options studied); this part of the expenditure was lowest with the CABG therapeutic option. CONCLUSION OMT appears to be the least costly option, and, if reasonable from a clinical point of view, might achieve appreciable savings in health expenditure.
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Affiliation(s)
- Thibaut Caruba
- AP-HP, hôpital européen Georges-Pompidou, Pharmacie, 20, rue Leblanc, 75015 Paris, France.
| | - Karine Chevreul
- AP-HP, Hôtel-Dieu, URC Eco, 1, place du parvis Notre-Dame, 75004 Paris, France; Inserm, ECEVE, U1123, Paris, France
| | - Kevin Zarca
- AP-HP, Hôtel-Dieu, URC Eco, 1, place du parvis Notre-Dame, 75004 Paris, France
| | - Benjamin Cadier
- AP-HP, Hôtel-Dieu, URC Eco, 1, place du parvis Notre-Dame, 75004 Paris, France
| | - Yves Juillière
- CHU Nancy-Brabois, Institut Lorrain du cœur et des vaisseaux, cardiologie, 54500 Vandœuvre-lès-Nancy, France
| | - Olivier Dubourg
- AP-HP, hôpital Ambroise-Paré, cardiologie, 9, avenue Charles-de-Gaulle, 92100 Boulogne-Billancourt, France
| | - Brigitte Sabatier
- AP-HP, hôpital européen Georges-Pompidou, Pharmacie, 20, rue Leblanc, 75015 Paris, France; Inserm, centre de recherche des cordeliers, UMR 1138, équipe 22, 75006 Paris, France
| | - Nicolas Danchin
- AP-HP, hôpital européen Georges-Pompidou, cardiologie, 20, rue Leblanc, 75015 Paris, France; Université René-Descartes, faculté de médecine, 15, rue de l'École-de-médecine, 75006 Paris, France
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Abstract
The aim of this work, undertaken in the framework of QWeCI (Quantifying Weather and Climate Impacts on health in the developing countries) project, is to study how climate variability could influence malaria seasonal incidence. It will also assess the evolution of vector-borne diseases such as malaria by simulation analysis of climate models according to various climate scenarios for the next years. Climate variability seems to be determinant for the risk of malaria development (Freeman and Bradley, 1996 [1], Lindsay and Birley, 1996 [2], Kuhn et al., 2005 [3]). Climate can impact on the epidemiology of malaria by several mechanisms, directly, via the development rates and survival of both pathogens and vectors, and indirectly, through changes in vegetation and land surface characteristics such as the variability of breeding sites like ponds.
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Affiliation(s)
- Ibrahima Diouf
- Laboratoire de physique de l'atmosphère et de l'océan Siméon-Fongang, École supérieure polytechnique de l'université Cheikh-Anta-Diop (UCAD), Dakar-Fann, Dakar, Senegal.
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Captier G, Boë LJ, Badin P, Guihard-Costa AM, Canovas F, Larroche JC. [Geometrical growth models of the fetal forebrain, cerebellum, brainstem and change of the cranial base angles during fetal period]. Morphologie 2013; 97:38-47. [PMID: 23796699 DOI: 10.1016/j.morpho.2012.12.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2012] [Revised: 11/26/2012] [Accepted: 12/20/2012] [Indexed: 06/02/2023]
Abstract
INTRODUCTION Brain growth plays likely an important role for the skull growth. In the fetus, there exists an heterochrony for the growth of supratentorial (forebrain) and infratentorial regions (brainstem and cerebellum). The aim of the study was thus to model geometrically the growth of these two regions and to compare it with the inflection of the base of skull. MATERIAL AND METHODS Brain growth measurements were performed from midsagittal photographs of fetal brains obtained from an Anatomical Atlas over a period from 10 to 40 amenorrhea weeks (AW). After countouring and pointing anatomical and geometrical landmarks, we have developed a linear growth model based on principal component analysis (PCA). Besides, the variation of the sphenoidal and clivo-foraminal angles was studied from anatomical midsagittal slices of fetal heads sampled over a period from 16 to 39 AW. RESULTS The PCA model brings to light the radial expansion of the forebrain growth (first component) associated with an inferior and posterior rotation of the occipital lobe. The growth of the infratentoriel region presents an inferior and posterior expansion associated with a second component corresponding to inferior and anterior expansions. From the 17 AW, appears an heterochrony between the supra- and infratentorial growths and an inversion of the ratio between the infra- and supratentorial dimensions after 30 AW. The sphenoidal and clivo-foraminal angles decrease slightly until 25 AW, and then increase quickly until the 39 AW. CONCLUSIONS The growth of brain is accompanied by morphological change between the compartments supra- and infratentoriel but also on the level of the base of skull. The possible interactions will be discussed.
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Affiliation(s)
- G Captier
- Laboratoire d'anatomie, université de Montpellier-1, 2, rue de l'École-de-Médecine, 34000 Montpellier, France.
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