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Morphologie: Bulletin de L'Association des Anatomistes

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https://www.readbyqxmd.com/read/28595833/a-history-of-calcium-orthophosphates-capo4-and-their-biomedical-applications
#1
REVIEW
S V Dorozhkin
The historical development of a scientific knowledge on calcium orthophosphates (CaPO4) from 1770-s till 1950 is described. Many forgotten and poorly known historical facts and approaches have been extracted from old publications and then they have been analyzed, systematized and reconsidered from the modern point of view. The chosen time scale starts with the earliest available studies of 1770-s (to the best of my findings, CaPO4 had been unknown before), passes through the entire 19th century and finishes in 1950, because since then the amount of publications on CaPO4 rapidly increases and the subject becomes too broad...
June 5, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28571762/filling-bone-defects-with-%C3%AE-tcp-in-maxillofacial-surgery-a-review
#2
REVIEW
B Guillaume
Reconstruction of bone defects prior to implant placement now involves synthetic substitutes such as β-TCP because of its ability to promote bone remodeling. Its capacity to be progressively substituted by the patient's bone allows to regenerate a dense bone volume. In addition, its availability in large quantities, avoiding the morbidity observed with harvesting autogenous bone, widens the operative indications. In this paper, the main indications of β-TCP in maxillofacial surgery (dentistry, parodontology and dental implant surgery) are reviewed...
May 29, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28528795/-original-three-dimensional-reconstruction-of-a-case-of-metopism-associated-with-a-unilateral-complete-absence-of-the-left-frontal-sinus-clinical-interest-and-review-of-the-literature
#3
M Eliezer, F Crampon, J Adnot, F Duparc, O Trost
Metopism (complete persistence of the metopic suture in adults) is a rare but not exceptional variation of the calvaria. Hypoplasia or aplasia of the frontal sinus may be associated without evident correlation. Nevertheless, a misdiagnosis of these variations may have clinical consequences, especially in a traumatic context. The aim of this paper was to report a case of metopism associated with a unilateral aplasia of the left frontal sinus, originally illustrated with 3D image fusion volume rendering reconstructions...
May 18, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28528186/the-pouch-of-the-douglas-s-pouch
#4
I Sall, E Diémé, M Diallo, E Bénadji, M Diouf, B Ndiaye, O Fall, A Sow, I C Diakhaté, M Ogougbémy
Hernia is described as the protrusion of an organ into the wall of its normal containing cavity. Internal hernia (IH) involves protrusion of viscera through: a peritoneal or mesentery defect, a normal or abnormal compartment of the peritoneal cavity. Hernias occurring in the pelvis cavity are usually classified according to the fascial margins breached and include sciatic, obturator and those through the rectouterin pouch: elytrocele and enterocele. Those hernias are defined by the protrusion of a viscus through the wall of the pelvis due to weakness of the pelvic fascia and/or muscles...
May 17, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28522228/accessory-subscapularis-muscle%C3%A2-%C3%A2-a-forgotten-variation
#5
L A S Pires, C F C Souza, A R Teixeira, T F O Leite, M A Babinski, C A A Chagas
The quadrangular space is a space in the axilla bounded by the inferior margin of the teres minor muscle, the superior margin of the teres major muscle, the lateral margin of the long head of the triceps brachii muscle and the surgical neck of the humerus, medially. The axillary nerve (C5-C6) and the posterior circumflex humeral artery and veins pass through this space in order to supply their territories. The subscapularis muscle is situated into the scapular fossa and inserts itself into the lesser tubercle of the humerus, thus helping stabilize the shoulder joint...
May 15, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28506709/behavior-of-macrophage-and-osteoblast-cell-lines-in-contact-with-the-%C3%AE-tcp-biomaterial-beta-tricalcium-phosphate
#6
B Arbez, H Libouban
Beta-tricalcium phosphate (β-TCP) is a synthetic ceramic used for filling bone defects. It is a good alternative to autologous grafts since it is biocompatible, resorbable and osteoconductive. Previous in vivo studies have shown that macrophages are one of the first cells coming in contact with the biomaterial followed by osteoclasts and osteoblasts that will elaborate new bone packets. Studies have focused on osteoclast morphology and very few of them have investigated the role of macrophages. The aims of this study were to characterize (i) the biomaterial surface; (ii) the in vitro behavior of macrophages (J774...
May 12, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28506708/electron-microscopy-approach-for-the-visualization-of-the-epithelial-and-endothelial-glycocalyx
#7
L Chevalier, J Selim, D Genty, J M Baste, N Piton, I Boukhalfa, M Hamzaoui, P Pareige, V Richard
This study presents a methodological approach for the visualization of the glycocalyx by electron microscopy. The glycocalyx is a three dimensional network mainly composed of glycolipids, glycoproteins and proteoglycans associated with the plasma membrane. Since less than a decade, the epithelial and endothelial glycocalyx proved to play an important role in physiology and pathology, increasing its research interest especially in vascular functions. Therefore, visualization of the glycocalyx requires reliable techniques and its preservation remains challenging due to its fragile and dynamic organization, which is highly sensitive to the different process steps for electron microscopy sampling...
May 12, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28501354/calcium-orthophosphates-capo4-occurrence-and-properties
#8
REVIEW
S V Dorozhkin
The present overview is intended to point the readers' attention to the important subject of calcium orthophosphates (CaPO4). This type of materials is of the special significance for the human beings because they represent the inorganic part of major normal (bones, teeth and antlers) and pathological (those appearing due to various diseases) calcified tissues of mammals. For example, atherosclerosis results in blood vessel blockage caused by a solid composite of cholesterol with CaPO4, while dental caries (tooth decay) and osteoporosis (a low bone mass with microarchitectural changes) mean a partial decalcification of teeth and bones, respectively, that results in replacement of a less soluble and harder biological apatite by more soluble and softer calcium hydrogenorthophosphates...
May 10, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28501353/beta-tricalcium-phosphate-for-orthopedic-reconstructions-as-an-alternative-to-autogenous-bone-graft
#9
P Hernigou, A Dubory, J Pariat, D Potage, F Roubineau, S Jammal, C H Flouzat Lachaniette
Autogenous bone graft (autograft) remains the gold standard in the treatment of many orthopedic problems. However, graft harvest can lead to perioperative morbidity and increased cost. We tested the hypothesis that an osteoconductive matrix, beta-tricalcium phosphate (β-TCP), would be a safe and effective alternative to autograft alone. Beta-tricalcium phosphate (β-TCP) is considered as one of the most promising biomaterials for bone reconstruction. This study analyzes the outcomes of patients who received β-TCP as bone substitutes in orthopedic surgery...
May 10, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28495330/relationships-between-age-and-microarchitectural-descriptors-of-iliac-trabecular-bone-determined-by-microct
#10
C Deguette, A Ramond-Roquin, C Rougé-Maillart
AIM: Estimation of age at death is a major issue in anthropology. The main anthropological histological methods propose studying the architecture of cortical bone. In bone histomorphometry, researches on metabolic bone diseases have provided normative tables for trabecular bone volume (BV/TV) according to age and gender of individuals on trans-iliac bone biopsies. We have used microCT, a non-destructive tool for measuring bone volume and trabecular descriptors to compare the French tables to a series of forensic anthropological population and if the two iliac bones could be used interchangeably...
May 8, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28457585/-the-parapharyngeal-adipose-corpus-surgical-anatomy-and-imaging
#11
V Colin, M Gavid, A Timochenko, J M Prades
The aim of this study is to define the parapharyngeal adiposis corpus (PAC) and its anatomical relationships originally described by P. Sebileau in 1892 to assess the potential clinical implications. MATERIALS AND METHODS: Seven frozen fresh cadavers were used, 3 of which after injection of latex neoprene colored in cervicocephalic arterial network. A MRI was performed in 10 patients without cervical pathology. The analysis was done on the frontal and transverse T1-weighted sections...
April 27, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28622773/a-new-editorial-project-for-morphologie
#12
EDITORIAL
D Chappard, S Louryan
No abstract text is available yet for this article.
June 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28442174/microstructural-alterations-owing-to-handling-of-bovine-pericardium-to-manufacture-bioprosthetic-heart-valves-a-potential-risk-for-cusp-dehiscence
#13
J Mao, Y Wang, E Philippe, T Cianciulli, I Vesely, D How, J-M Bourget, L Germain, Z Zhang, R Guidoin
INTRODUCTION: Cross-linking and anti-calcification of prosthetic heart valves have been continuously improved to prevent degeneration and calcification. However, non-calcific structural deteriorations such as cuspal dehiscences along the stent still require further analysis. MATERIAL AND METHOD: Based upon the previous analysis of an explanted valve after 7 years, a fresh commercial aortic valve was embedded in poly(methyl methacrylate) (PMMA) and cut into slices to ensure the detailed observation of the assembly and material structures...
June 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28462796/basic-research-and-clinical-application-of-beta-tricalcium-phosphate-%C3%AE-tcp
#14
REVIEW
T Tanaka, H Komaki, M Chazono, S Kitasato, A Kakuta, S Akiyama, K Marumo
The mechanism of bone substitute resorption involves two processes: solution-mediated and cell-mediated disintegration. In our previous animal studies, the main resorption process of beta-tricalcium phosphate (β-TCP) was considered to be cell-mediated disintegration by TRAP-positive cells. Thus, osteoclast-mediated resorption of β-TCP is important for enabling bone formation. We also report the results of treatment with β-TCP graft in patients since 1989. Two to three weeks after implantation, resorption of β-TCP occurred from the periphery, and then continued toward the center over time...
April 24, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28410916/chronic-alcohol-abuse-in-men-alters-bone-mechanical-properties-by-affecting-both-tissue-mechanical-properties-and-microarchitectural-parameters
#15
M Cruel, M Granke, C Bosser, M Audran, T Hoc
OBJECTIVE OF THE STUDY: Alcohol-induced secondary osteoporosis in men has been characterized by higher fracture prevalence and a modification of bone microarchitecture. Chronic alcohol consumption impairs bone cell activity and results in an increased fragility. A few studies highlighted effects of heavy alcohol consumption on some microarchitectural parameters of trabecular bone. But to date and to our knowledge, micro- and macro-mechanical properties of bone of alcoholic subjects have not been investigated...
April 11, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/28159459/osteoporosis-in-stickler-syndrome-a-new-family-case-with-bone-histology-study
#16
P Insalaco, E Legrand, B Bouvard, M Audran
The Stickler syndrome (SS) has been described as a "hereditary progressive arthro-ophtalmopathy" by Stickler in 1965, due to mutations on the collagen genes. Currently about 40 different genes have been identified which encode for at least 27 different collagens. The majority of mutations occur in the COL2A1 gene on chromosome 12q13 (SS type I). Mutations in COL11A1 are less frequent (SS type II). More recently, mutations in COL11A2 and in the COL9A1 gene have been reported with particular phenotypes. The main features of this autosomal inherited disease are ocular, auditory with orofacial abnormalities and early-onset osteoarthritis...
March 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/27839870/nonmetric-analysis-of-caroticoclinoid-foramen-in-foothills-of-himalayas-its-clinicoanatomic-perspective
#17
S Jha, S Singh, R Bansal, P Chauhan, M-P Shah, A Shah
OBJECTIVE OF THE STUDY: Study was conducted to evaluate the incidence of caroticoclinoid foramen in north Indian population. Authors have also endeavoured to discuss its clinical and embryological implications. MATERIALS AND METHODS: Study was conducted on 108 dry human skulls in department of anatomy SGRR medical college, Dehradun. Incidence of caroticoclinoid foramen was evaluated in accordance with side. RESULTS: A percentage of 22.22 skulls presented with the caroticoclinoid foramen with maximum incidence of unilateral and incomplete type...
March 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/27746040/expression-of-aquaporin-7-and-aquaporin-9-in-tanycyte-cells-and-choroid-plexus-during-mouse-estrus-cycle
#18
A Yaba, B Sozen, B Suzen, N Demir
Tanycytes are special ependymal cells located in the ventrolateral wall and floor of the third ventricle having processes extending nuclei that regulate reproductive functions and around of vessels in median eminance. The aquaporins (AQPs) are a family of transmembrane proteins that transport water and glycerol. AQP-7 and -9 are permeable to other small molecules as glycerol and therefore called aquaglyceroporins. In this study, we aimed to show localization of AQP-7 and -9 in epithelial cells of choroid plexus and tanycytes during female mouse estrus cycle...
March 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/27426252/wear-products-of-total-hip-arthroplasty-the-case-of-polyethylene
#19
REVIEW
P Massin, S Achour
Among the bearing surfaces involved in a total hip arthroplasty, ultra-high molecular weight polyethylene (UHMWPE) is the weak link. It is submitted to the friction of a harder bearing, producing wear particles, which, in turn, initiate an inflammatory reaction ultimately leading to osteolysis. This kind of bone deterioration sometimes turns out to an aggressive granuloma and may provoke implant loosening. Wear resistance of UHMWPE depends on its molecular weight and crystallinity. Some steps of the manufacturing process were improved to optimize its tribological properties and to slow down degradation resulting from mechanical (abrasion) and chemical (oxidation) phenomena...
March 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/27423215/correlation-between-structural-changes-and-acute-thrombogenicity-in-transcatheter-pericardium-valves-after-crimping-and-balloon-deployment
#20
J-M Bourget, R Zegdi, J Lin, P Wawryko, Y Merhi, C Convelbo, J Mao, Y Fu, T Xu, N O Merkel, L Wang, L Germain, Z Zhang, R Guidoin
INTRODUCTION: Transcathether heart valve replacement has gained considerable acceptance during the last decades. It is now part of the armamentarium for aortic valve replacement. The procedure proved to be highly efficient. However the issues of the blood compatibility and tissue durability were not raised and the adverse events were probably under-reported, according to observations of thrombosis after deployment. MATERIAL AND METHOD: Bovine pericardium leaflets were sewn inside a 26mm diameter stainless steel stent to manufacture these valves (one control and two experimental)...
March 2017: Morphologie: Bulletin de L'Association des Anatomistes
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