An in situ hybridization study of syndecan family during the late stages of developing mouse molar tooth germ
AbstractExpression ofsyndecan-1, 2, 3, and4 mRNAs during the late stages of tooth germ formation was investigated by in situ hybridization, using [35S]-UTP-labeled cRNA probes.Syndecan-1 mRNA was mainly expressed in the stellate reticulum and stratum intermedium as well as at the cervical region of dental papilla/dental follicle during E18.5-P3.0. Expression in the dental epithelium was enhanced during the postnatal periods, which was supported by real-time RT-PCR analysis. These spatiotemporal expression patterns may suggest specific roles of syndecan-1 in tooth formation such as tooth eruption or root formation.Syndecan-...
Source: Anatomical Science International - February 4, 2022 Category: Anatomy Source Type: research
Excised human larynx in N-vinyl-2-pyrrolidone-embalmed cadavers can produce voiced sound by pliable vocal fold vibration
AbstractTissue-hardening effect and health-hazard issue of formaldehyde (FA) have long been a great disadvantage of this conventional fixative in anatomical research. We recently developed a FA-free embalming method for cadavers which utilizes N-vinyl-2-pyrrolidone (NVP) and enables assessment of motion kinetics by maintaining the softness of embalmed tissue. By assessing the feasibility of NVP-embalmed tissue to mimic vocalization, this study aimed to prove the potential of embalmed cadavers, which have previously been used only for the understanding of anatomical morphology, for the assessment of precise motion physiolog...
Source: Anatomical Science International - February 3, 2022 Category: Anatomy Source Type: research
Segmental composition of the porcine iliopsoas muscle and influence of the body size and posture on the composition of the iliopsoas muscle
AbstractThe iliopsoas muscle (IPM) of the pig consists of the iliacus muscle (IM) and the psoas major muscle (PMM). Due to the differences in posture and size between animal species, the musculoskeletal system is subjected to different functional demands, which affects the morphological characteristics of the musculoskeletal system. The aim of this study was to determine the muscle fiber type composition in pigs IPM, as pigs are large quadrupeds that differ in body size and posture from humans and small mammals, and to determine the influence of body size and posture on the composition of IPM. Muscle samples were collected...
Source: Anatomical Science International - January 22, 2022 Category: Anatomy Source Type: research
Elucidation of the control mechanism of dynamic tissues using freezing techniques
This study utilized the IVCT to capture histological images of dynamic objects from multiple viewp oints and elucidate the mechanism underlying their movement control at the molecular level. (Source: Anatomical Science International)
Source: Anatomical Science International - January 17, 2022 Category: Anatomy Source Type: research
Transforming anatomy education: then and now
(Source: Anatomical Science International)
Source: Anatomical Science International - January 17, 2022 Category: Anatomy Source Type: research
Calcification and resorption of mouse Meckel ’s cartilage analyzed by von Kossa and tartrate-resistant acid phosphatase histochemistry and scanning electron microscopy/energy-dispersive X-ray spectrometry
This study contributes to the understanding of the mechanism of Me ckel's cartilage resorption and provides useful insights into the development of the mandible. (Source: Anatomical Science International)
Source: Anatomical Science International - December 2, 2021 Category: Anatomy Source Type: research
The craniovertebral junction, between osseous variants and abnormalities: insight from a paleo-osteological study
AbstractThe bony components of the craniovertebral junction (CVJ) have been investigated in 172 skeletons, dug up from several archaeological sites, to define the frequency of developmental dysmorphisms, and to acquire qualitative and quantitative data about their morphology. A review of the pertinent literature is also presented. Twenty-five individuals (14.5%) exhibited at least one dysmorphism, which ranged from a condition of simple variant to a true malformation. Four individuals presented two or more anomalies at the same time (2.3% of the whole sample, 16% of the affected individuals). The most frequently observed a...
Source: Anatomical Science International - November 29, 2021 Category: Anatomy Source Type: research
The morphometric study of the moderator band in Thais
This study provided both anatomical and clinical information that should be useful in cardiac surgery, radiology, and cardiac electrophysiological interventions. (Source: Anatomical Science International)
Source: Anatomical Science International - November 26, 2021 Category: Anatomy Source Type: research
Anatomical, morphometric and radiographic study of the humerus in lesser anteater (Tamandua mexicana Saussure, 1860): terminological and functional analyses
AbstractTamandua is a neotropical mammal genus that belongs to the superorder Xenarthra. The thoracic limbs ofTamandua have anatomical adaptations that widely differ from other mammals, and there are frequently specimens in wildlife care centers with traumas in their limbs. However, there are few studies describing the radiographic and morphometric anatomy of the humerus inTamandua, or describing partially the bone reliefs. Thus, the main objective of this study was to describe the characteristics of the humerus ofTamandua mexicana based on gross dissections, radiographies and measurements comparing with other studies in t...
Source: Anatomical Science International - November 22, 2021 Category: Anatomy Source Type: research
A case of double inferior vena cava with the connection to sacral venous plexus
AbstractDouble inferior vena cava (IVC) is known as a variation in which the additional IVC is found on the left side of the abdominal aorta. Their developmental process has been well documented, but the venous development around the lumbosacral region is controversial. In the present double IVC case, the left IVC entered the left renal vein at the L2 level, and the renal veins on each side flowed into the right IVC at the L1 level. The internal and external iliac veins were merged at the S1 level on each side. Besides, a venous communication (3-mm-width) was found horizontally between the internal iliac veins near their o...
Source: Anatomical Science International - November 19, 2021 Category: Anatomy Source Type: research
Comparative anatomy of the subscapularis, teres major and latissimus dorsi muscles from salamanders to mammals with special reference to their innervations from the brachial plexus
In this study, I unveil the phylogenetic origin of the mammalian subscapularis. The animals observed were a chimpanzee, a lar gibbon, a cat, a fetal pig, a koala, a possum (mammals), a lizard, an iguana (reptiles) and salamanders (amphibians). The branches to the mammalian subscapularis were divided into proximal and distal groups based on the origin from the brachial plexus, just like the human subscapularis. In salamanders and lizards, the homologous branch with the mammalian proximal branch to the subscapularis was observed and the segmentally higher branch innervating the latissimus dorsi was homologous with the distal...
Source: Anatomical Science International - October 22, 2021 Category: Anatomy Source Type: research
Clinical anatomy of the musculoskeletal system in the hip region
AbstractAlthough the hip joint is regarded as inherently stable, hip pain and injuries caused by traumatic/non-traumatic hip instability are relatively common in active individuals. A comprehensive understanding of hip anatomy may provide better insight into the relationships between hip stability and clinical problems. In this review, we present our recent findings on the hip morphological characteristics, especially focusing on the intramuscular tendon of the gluteus medius tendon and its insertion sites, hip capsular attachment on the anterosuperior region of the acetabular margin, and composition of the iliofemoral lig...
Source: Anatomical Science International - October 22, 2021 Category: Anatomy Source Type: research
Comparative anatomy of the subscapularis, teres major and latissimus dorsi muscles from salamanders to mammals with special reference to their innervations from the brachial plexus
In this study, I unveil the phylogenetic origin of the mammalian subscapularis. The animals observed were a chimpanzee, a lar gibbon, a cat, a fetal pig, a koala, a possum (mammals), a lizard, an iguana (reptiles) and salamanders (amphibians). The branches to the mammalian subscapularis were divided into proximal and distal groups based on the origin from the brachial plexus, just like the human subscapularis. In salamanders and lizards, the homologous branch with the mammalian proximal branch to the subscapularis was observed and the segmentally higher branch innervating the latissimus dorsi was homologous with the distal...
Source: Anatomical Science International - October 22, 2021 Category: Anatomy Source Type: research
Improved analysis method of neuromuscular junction in Drosophila larvae by transmission electron microscopy
AbstractTheDrosophila neuromuscular junction is an excellent model for neuroscience research. However, the distribution of neuromuscular junctions is very diffuse, and it is not easy to accurately locate during ultrathin sectioning, which seriously interferes with the ultrastructural analysis under electron microscopy that only has a small field of view. Here, we reported an efficient method for acquiring the ultrastructural picture of neuromuscular junctions inDrosophila larva under electron microscopy. The procedure was as follows: first, the larval sample of body wall muscle was placed between the metal mesh and was deh...
Source: Anatomical Science International - October 18, 2021 Category: Anatomy Source Type: research
