Abstract:
:The pulmonary intravascular macrophages (PIMs) of domestic ungulates are recognised by their specific surface coat, consisting of linearly arranged globules along the external leaf of the plasma membrane. The coat is sensitive to in vitro digestion with lipolytic lipase (LPL), intravenous heparin and clinical exposure to halothane anaesthesia. The sensitivity to these experimental manipulations suggests that the globules of the coat are predominantly composed of lipoproteins (LDL). The present administration of oestradiol proprionate in castrated male calves potentiated the translocation of the surface coat into the endocytotic pathway of the PIMs. Concurrently with mobilisation of the coat, the plasma membrane was thrown into prominent arrays of lamellipodial extensions. The sprawling macrophages made extensive adhesive contacts with the lining endothelium of the capillaries. Consequently, the endothelial cells were highly attenuated and precariously maintained the integrity of the vascular wall. At some focal points, the vascular wall was penetrated by the filopodial processes of PIMs, which protruded into the perivascular space. Furthermore, there were signs of neovascularisation in the form of overt mitotic changes, sprouting and precursor capillary formation. It is conceivable that the evolving profile of angiogenesis is due to the vascular endothelial growth factor (VEGF) paracrine function of PIMs. Endothelial cell specificity has been considered an important advantage of VEGF for neovascularisation. It allows pleotrophic response of endothelial cells to proliferate and to assemble into endothelial tubes.
journal_name
J Anatjournal_title
Journal of anatomyauthors
Atwal OS,Minhas KJ,Williams CSdoi
10.1046/j.1469-7580.2001.19850611.xkeywords:
subject
Has Abstractpub_date
2001-05-01 00:00:00pages
611-24issue
Pt 5eissn
0021-8782issn
1469-7580journal_volume
198pub_type
杂志文章abstract::The onset and evolution of the meiotic prophase were assessed by histological and cytological techniques in fetal and neonatal ovaries obtained from day 13 postcoitum to day 11 postpartum in the golden hamster (Mesocricetus auratus). The histological technique based on the Feulgen stain and the cytological technique b...
journal_title:Journal of anatomy
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abstract::The sacroiliac joint (SIJ) is a well-known source of low back and pelvic pain, of increasing interest for both conservative and surgical treatment. Alterations in the kinematics of the pelvis have been hypothesized as a major cause of SIJ-related pain. However, definitions of both the range and the extent of physiolog...
journal_title:Journal of anatomy
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abstract::The spatiotemporal distribution of macrophages in the uterine wall of mice in the second half of pregnancy and the early postpartum period has been studied. Macrophages were identified using a combination of morphological criteria, the capacity to endocytose horseradish peroxidase and the expression of the Mac-1 antig...
journal_title:Journal of anatomy
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doi:
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abstract::This study describes at the ultrastructural level the neuronal changes in the intracardiac ganglia of the monkey (Macaca fascicularis) following unilateral vagotomy. One day after unilateral vagotomy, some intracardiac neurons showed an overall increase in electron density, with the dendrites darkening first. At three...
journal_title:Journal of anatomy
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更新日期:1984-01-01 00:00:00
abstract::Examination of spinal cords of 5 days old mice showed a number of examples of oligodendrocytes, in various phases of mitosis, which remained in contact with the axons which they were myelinating. Cells in prophases had thick processes between the perikaryon and the myelinating axons but as mitosis proceeded the oligod...
journal_title:Journal of anatomy
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abstract::Wallerian degeneration and dying-back pathology are two well-known cellular pathways capable of regulating the breakdown and loss of axonal and synaptic compartments of neurons in vivo. However, the underlying mechanisms and molecular triggers of these pathways remain elusive. Here, we show that loss of translation el...
journal_title:Journal of anatomy
pub_type: 杂志文章
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更新日期:2008-12-01 00:00:00
abstract::It is well established that many tissue-derived factors are involved in blood vessel formation, but evidence is now emerging that endothelial cells themselves represent a crucial source of instructive signals to non-vascular tissue cells during organ development. Thus, endothelial cell signalling is currently believed...
journal_title:Journal of anatomy
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更新日期:2007-10-01 00:00:00
abstract::We investigated the occurrence and anatomy of the vomeronasal system (VNS) in tadpoles of 13 different anuran species. All of the species possessed a morphologically fully developed VNS with a highly conserved anatomical organisation. We found that a bean-shaped vomeronasal organ (VNO) developed early in the tadpoles,...
journal_title:Journal of anatomy
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abstract::At the time of blastocyst implantation the uterine spiral arteries have already undergone morphological changes in the absence of any extravillous trophoblast invasion. Only 2 weeks after implantation, extravillous trophoblast cells develop and come into first contact with decidual tissues. Invading through the decidu...
journal_title:Journal of anatomy
pub_type: 杂志文章,评审
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更新日期:2009-07-01 00:00:00
abstract::On the basis of its internal structure, the ball of the foot can be divided into three transverse areas, each with a different mechanical function: (1) an area proximal to the heads of the metatarsals in which the retinacula cutis are developed into a series of transverse bands, and in which the deep fibres of the pla...
journal_title:Journal of anatomy
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doi:
更新日期:1976-07-01 00:00:00
abstract::Congenitally corrected transposition of the great arteries (ccTGA) is a rare congenital malformation which associates discordant atrioventricular and ventriculo-arterial connections. Although frequently associated with a ventricular septal defect (VSD), its anatomy remains controversial. This could be due in hearts wi...
journal_title:Journal of anatomy
pub_type: 杂志文章
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更新日期:2020-02-01 00:00:00
abstract::The development of the patella, its associated tendons, and suprapatella of the rabbit knee joint is described from the 17 d fetus to the mature adult. The patellar tendon (ligament) with the patella on its posterior surface is seen in the 17 d fetus and is fully developed by 1 postnatal wk. It is composed of bundles ...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.1997.19030327.x
更新日期:1997-04-01 00:00:00
abstract::The epithalamus is a major subdivision of the diencephalon constituted by the habenular nuclei and pineal complex. Structural asymmetries in this region are widespread amongst vertebrates and involve differences in size. neuronal organisation, neurochemistry and connectivity. In species that possess a photoreceptive p...
journal_title:Journal of anatomy
pub_type: 杂志文章,评审
doi:10.1046/j.1469-7580.2001.19910063.x
更新日期:2001-07-01 00:00:00
abstract::Rodents, together with bats, are among the ecologically most diverse and most speciose groups of mammals. Moreover, rodents show elaborate specializations of the feeding apparatus in response to the predominantly fore-aft movements of the lower jaw. The Laotian rock rat Laonastes aenigmamus was recently discovered and...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2012.01519.x
更新日期:2012-08-01 00:00:00
abstract::The ACTH cells form a layer 1-8 cells thick, dorsal to the prolactin cells in the rostral pars distalis. They react only mildly with a variety of stains including PAS-lead haematoxylin. Their nuclear diameters vary seasonally in a manner that closely parallels that of the prolactin cells. The relative volumes of the A...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1982-08-01 00:00:00
abstract::Adult male Sprague-Dawley rats were randomly assigned to two groups: control and anaemic. Anaemia was induced by periodical blood withdrawal. Extensor digitorum longus and soleus muscles were excised under pentobarbital sodium total anaesthesia and processed for transmission electron microscopy, histochemical and bioc...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2008.00908.x
更新日期:2008-06-01 00:00:00
abstract::Apart from molecular data, nearly all the evidence used to study primate relationships comes from hard tissues. Here, we provide details of the first parsimony and Bayesian cladistic analyses of the order Primates based exclusively on muscle data. The most parsimonious tree obtained from the cladistic analysis of 166 ...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.1469-7580.2011.01403.x
更新日期:2011-09-01 00:00:00
abstract::Lactating animals are particularly susceptible to mastitis during the early stages of mammary gland involution following weaning. In this study we compared the phagocytic capacity of cells collected from sheep mammary secretions at different stages of involution. The ability of neutrophils and macrophages to ingest la...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.0021-8782.2002.00104.x
更新日期:2002-11-01 00:00:00
abstract::Cellullar deficits are replenished within the central nervous system (CNS) by progenitors to maintain integrity and recover function after injury. NG2 proteoglycan-expressing progenitors replenish oligodendrocyte populations, but the nature of NG2 proteoglycan may not indicate a restricted population of progenitors. A...
journal_title:Journal of anatomy
pub_type: 杂志文章,评审
doi:10.1111/j.1469-7580.2005.00480.x
更新日期:2005-12-01 00:00:00
abstract::Ultrasound of the calcaneus may be used as a cheap, ionising radiation-free and easy to use indicator of skeletal status, and hence of osteoporotic fracture risk. At present ultrasound is not widely used as it suffers from high precision errors. As ultrasound parameters are determined in part by bone mineral density (...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.1998.19330449.x
更新日期:1998-10-01 00:00:00
abstract::Many studies have demonstrated the association between facet tropism and disc herniation in the lumbar spine. Some of them found that lumbar disc herniation was on the side of the more sagittal facet joint interface. However, little is understood about the association of facet tropism with disc herniation in the cervi...
journal_title:Journal of anatomy
pub_type: 杂志文章
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abstract::Alx4 and Msx2 encode homeodomain-containing transcription factors that show a clear functional overlap. In both mice and humans, loss of function of either gene is associated with ossification defects of the skull vault, although the major effect is on the frontal bones in mice and the parietal bones in humans. This s...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.0021-8782.2004.00304.x
更新日期:2004-06-01 00:00:00
abstract::This study set out to determine the pattern of development and distribution of the interstitial cells of Cajal (ICC) in the intestinal tract of the equine fetus and neonate. Intestinal tissue samples from 12 naturally aborted equine fetuses and three euthanized neonates were collected and fixed in formalin prior to ap...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/j.0021-8782.2004.00315.x
更新日期:2004-07-01 00:00:00
abstract::The paraspinal compartment acts as a bone-muscle composite beam of the spine. The elastic properties of the paraspinal muscles play a critical role in spine stabilization. These properties depend on the subjects' posture, and they may be drastically altered by low back pain. Supersonic shear wave elastography can be u...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1111/joa.12978
更新日期:2019-06-01 00:00:00
abstract::The distribution of neurons expressing NADPH diaphorase activity was examined histochemically in whole mount preparations of the neonatal guinea pig urinary bladder. NADPH diaphorase positive neurons were abundant in the intramural ganglia in both the detrusor and trigone regions of the bladder. Labelled nerve fibres ...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1994-12-01 00:00:00
abstract::The translocation of mitochondria towards the primitive inner segment of the cones in the tree shrew Tupaia belangeri was investigated by transmission electron microscopy. Throughout ontogeny the migrating mitochondria were codistributed with cytoplasmic microtubules which were preserved after the application of conve...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1996-10-01 00:00:00
abstract::Diaphragmatic sulci in the superior surface of the liver were found in 40% of cases at autopsy. All sulci were located in the right lobe and in 47% they were multiple. In order to evaluate possible predisposing factors for these accessory sulci, their topography and characteristics were observed in unfixed livers; mor...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:10.1046/j.1469-7580.2003.00160.x
更新日期:2003-03-01 00:00:00
abstract::Maternal intraperitoneal administration of 1 mg/kg 5-azacytidine to pregnant S1c:ICR mice on gestational Day 7.5 resulted in a high incidence of exencephalic offspring. Histological examination of untreated 7.5 days mouse embryos revealed that the head folds were formed in the anterior halves of the embryos, whereas t...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1985-05-01 00:00:00
abstract::Cell abutments in the ovarian bursal epithelium of the golden hamster included tight junctions, desmosome-like junctions, gap junctions and zonulae adhaerentes. The plasma membranes of adjacent epithelial cells were often closely apposed forming a zonula adherens at the apex of the intercellular space, but these did n...
journal_title:Journal of anatomy
pub_type: 杂志文章
doi:
更新日期:1986-10-01 00:00:00
abstract::Interneurons are an integral part of cortical neuronal circuits. During the past decade, numerous studies have shown that these cells, unlike their pyramidal counterparts that are derived from the neuroepithelium along the lumen of the lateral ventricles, are generated in the ganglionic eminences in the subpallium. Th...
journal_title:Journal of anatomy
pub_type: 杂志文章,评审
doi:10.1111/j.1469-7580.2007.00750.x
更新日期:2007-08-01 00:00:00