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Anatomical Record

Helene M Langevin, Jason A Yandow
Acupuncture meridians traditionally are believed to constitute channels connecting the surface of the body to internal organs. We hypothesize that the network of acupuncture points and meridians can be viewed as a representation of the network formed by interstitial connective tissue. This hypothesis is supported by ultrasound images showing connective tissue cleavage planes at acupuncture points in normal human subjects. To test this hypothesis, we mapped acupuncture points in serial gross anatomical sections through the human arm...
December 15, 2002: Anatomical Record
Timothy M Ritty, Konstantinos Ditsios, Barry C Starcher
The elastic fiber is known to be an important component of skin, lung, and vasculature. Much less is known about the distribution of elastin and elastic fiber-related proteins in connective tissues, yet genetic defects of elastic fiber constituents can lead to deficiencies in these tissues. For the first time, we determine the distribution of elastin, fibrillins 1 and 2, and microfibril-associated glycoproteins (MAGPs) 1 and 2 in the flexor digitorum profundus (FDP) tendon. Three functionally distinct regions of the FDP tendon, the fibrocartilagenous (FC) region, avascular/tensional (AV/T) region, and insertion region, were evaluated by immunohistochemical methods for these five proteins...
December 1, 2002: Anatomical Record
Duane E Haines
No abstract text is available yet for this article.
October 15, 2002: Anatomical Record
Duane E Haines
No abstract text is available yet for this article.
October 15, 2002: Anatomical Record
Yujiro Sakamoto, Yoshiro Takano
The influences of chronic deficiency of L-ascorbic acid (AsA) on the differentiation of osteo-chondrogenic cells and the process of endochondral ossification were examined in the mandibular condyle and the tibial epiphysis and metaphysis by using Osteogenic Disorder Shionogi (ODS) rats that bear an inborn deficiency of L-gulonolactone oxidase. Weanling male rats were kept on an AsA-free diet for up to 4 weeks, until the symptoms of scurvy became evident. The tibiae and condylar processes of scorbutic rats displayed undersized and distorted profiles with thin cortical and scanty cancellous bones...
October 1, 2002: Anatomical Record
Ethan A Carver, Kathleen F Oram, Thomas Gridley
Saethre-Chotzen syndrome is a common autosomal dominant form of craniosynostosis, the premature fusion of the sutures of the calvarial bones of the skull. Most Saethre-Chotzen syndrome cases are caused by haploinsufficiency for the TWIST gene. Mice heterozygous for a null mutation of the Twist gene replicate certain features of Saethre-Chotzen syndrome, but have not been reported to exhibit craniosynostosis. We demonstrate that Twist heterozygous mice exhibit fusions of the coronal suture and other cranial suture abnormalities, indicating that Twist heterozygous mice constitute a better animal model for Saethre-Chotzen syndrome than was previously appreciated...
October 1, 2002: Anatomical Record
E Robert Burns
The Department of Anatomy and Neurobiology, College of Medicine, University of Arkansas for Medical Sciences (UAMS) is the administrative home of a nationally recognized educational outreach program in the health sciences for K-12 teachers (includes school nurses, counselors, etc.) and students. This program is called the Partners in Health Sciences (PIHS) program. It began in the summer of 1991 and is based on an annual needs assessment of the state's teachers. PIHS is a program available to all teachers and students in the state...
August 15, 2002: Anatomical Record
D Vashishth, G Gibson, J Kimura, M B Schaffler, D P Fyhrie
During development and growth, biological tissues and organisms can control their size and mass by regulating cell number (Raff, 1992; Conlon and Raff, 1999). Later in life both cell number and organ mass decrease (Buetow, 1985). We demonstrate that the number density of bone cells buried in the calcified matrix (osteocyte lacunar density) predicts extracellular matrix volume for both cancellous and cortical bone in a broad cross-section of the population (males and females, age range 23-91 years, r(2) = 0...
August 1, 2002: Anatomical Record
Richard A Lazenby
Variation in cortical thickness (CT) in four quadrants of the human second metacarpal was investigated in a sample (100 males and 72 females, skeletal age 20 to 50+ years) from a 19th-century cemetery. Both left and right elements were studied (total N = 344). Multivariate analysis of covariance (MANCOVA) (for age, sex, and side, controlling for absolute size) was used to test the hypothesis of equality of thickness in the dorsal, palmar, medial, and lateral quadrants. Differences in regional CT posits localized regulation of resorption and formation adapting bone shape to functional loads, with implications for activity-modulation of skeletal senescence...
June 1, 2002: Anatomical Record
Noble Suydam Rustem Maluf
This study focuses on certain aspects of the renal structure of the giraffe, with some implications as to its function. About 4,000 collecting ducts open at the truncated end of a curved crest that juts into the renal pelvis as the inner medulla (IM). Extensions of the pelvis pass between the medullary (MP) and vascular (VP) processes almost to the corticomedullary border. The MPs contain an IM and an outer medulla (OM) containing clusters of capillaries (vascular bundles). The VPs contain the interlobar arteries and veins...
June 1, 2002: Anatomical Record
Kathy Kay Hartford Svoboda, Wende R Reenstra
Many research projects will lead to understanding tissue and/or cell responses to extracellular influences either from soluble factors or the surrounding extracellular matrix. These types of investigations will require the understanding of signal transduction. This particular cell biological field has literally exploded with information and new technical approaches in the past 10 years. This article is directed toward investigators interested in using these new approaches to study their systems. An overview of the general principles of signal transduction events including the types of receptors and intracellular signaling events is followed by an introduction to methods for visualizing signal transduction...
April 15, 2002: Anatomical Record
Takahiro Oshiro, Aya Shiotani, Yoshinobu Shibasaki, Takahisa Sasaki
Osteoprotegerin (OPG) is a novel secreted member of the tumor necrosis factor (TNF) receptor superfamily that negatively regulates osteoclastogenesis. The receptor activator of the NFKB ligand (RANKL) is one of the key regulatory molecules in osteoclast formation and binds to OPG. In this study, it was suggested that OPG and RANKL are involved in alveolar bone remodeling during orthodontic tooth movement. We examined RANKL localization and osteoclast induction in periodontal tissues during experimental movement of incisors in OPG-deficient mice...
April 1, 2002: Anatomical Record
Leonard M Eisenberg
No abstract text is available yet for this article.
April 1, 2002: Anatomical Record
Betty J Sindelar, Stan Edwards, Susan W Herring
Intraoral splints are a commonly used dental treatment for a variety of conditions. Because such splints alter the condyle-disc-fossa relationship, they probably change the loading status of the temporomandibular joint (TMJ), including the TMJ disc. Collagen, a major constituent of the disc, acts to resist tensile loading, and it is presumed that the fiber orientations of the individual disc bands reflect their functional loading. Therefore, the purpose of this study was to examine effects of intraoral splint wear on TMJ morphology in general, and collagen orientation of the intra-articular disc in particular...
March 1, 2002: Anatomical Record
No abstract text is available yet for this article.
March 1965: Anatomical Record
No abstract text is available yet for this article.
January 1965: Anatomical Record
No abstract text is available yet for this article.
December 1964: Anatomical Record
No abstract text is available yet for this article.
October 1964: Anatomical Record
No abstract text is available yet for this article.
September 1964: Anatomical Record
No abstract text is available yet for this article.
July 1964: Anatomical Record
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