Abstract:
:Spermatogenesis and the sperm structure of the terebrantian Aeolothrips intermedius Bagnall are described. Spermatogenesis consists of two mitotic divisions; the second is characterized by the loss of half of the spermatids, which have pyknotic nuclei. Early spermatids have two centrioles, but when spermiogenesis starts, a third centriole is produced. The three basal bodies give rise to three flagella; later these fuse into a single flagellum which contains three 9+0 axonemes. The basal bodies are surrounded by a large amount of centriole adjunct material. During spermiogenesis this material contributes to the shifting of the three axonemes towards the anterior sperm region parallel to the elongating nucleus, and it is transformed into a dense cylinder. In the mature spermatids the three axonemes amalgamate to create a bundle of 27 doublet microtubules. Near the end of spermiogenesis the dense cylinder of the centriole adjunct lies parallel to the nucleus and the axonemes. It ends where the mitochondrion appears at half-sperm length. We confirm that Terebrantia testes have a single sperm cyst; their sperm are characterized by a cylindrical nucleus, three axonemes fused into one, a small mitochondrion and a short cylindrical centriole adjunct which corresponds to the dense body described in a previous work. The acrosome is lacking. At the midpoint of the anterior half of the sperm the outline of the cross-section is bilobed, with the nucleus contained in a pocket evagination of the plasma membrane. These characters are discussed in light of a comparison between Tubulifera and Terebrantia.
journal_name
Tissue Celljournal_title
Tissue & cellauthors
Paccagnini E,Mercati D,Giusti F,Conti B,Dallai Rdoi
10.1016/j.tice.2010.04.008subject
Has Abstractpub_date
2010-08-01 00:00:00pages
247-58issue
4eissn
0040-8166issn
1532-3072pii
S0040-8166(10)00034-0journal_volume
42pub_type
杂志文章相关文献
TISSUE & CELL文献大全abstract::Stem cells from the human dental apical papilla (SCAP) can be obtained from almost all extracted wisdom teeth with an immature tooth root. Although different stem cell lines are used for studies, it remains elusive whether specific characteristics of the dental stem cell cultures such as proliferation rates or the cel...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2015.05.002
更新日期:2015-08-01 00:00:00
abstract::We investigated apoptotic effects and changes in glucose-6-phosphate dehydrogenase (G6PD) enzyme activity in liver and gill tissues of fish exposed to chlorpyrifos. Three different chlorpyrifos doses (2.25, 4.5 and 6.75 μg/L) were administrated to rainbow trout at different time intervals (24, 48, 72 and 96 h). Acute ...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2014.09.001
更新日期:2014-12-01 00:00:00
abstract::Pyridoxal-5'-phosphate, the active form of vitamin B6, is associated with activities of several enzymes and the treatment of various neurological disorders. Here, we investigated the effects of pyridoxine on the immunoreactivity and protein levels of γ-aminobutyric acid (GABA)-synthesizing and degradation enzymes such...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2019.09.005
更新日期:2019-12-01 00:00:00
abstract::The guppy is a tropical fish that has been used as an experimental model organism in science. It is a species well adapted to the natural environment and that can support adverse environmental conditions, and so, at occasions, its presence can be indicative of environmental disturbances. Moreover, as the liver is very...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2017.12.009
更新日期:2018-02-01 00:00:00
abstract::The females of some species of the family Halophilosciidae receive in the course of mating a quantity of sperm considerably redundant with respect to the number of eggs that can be fertilized; this is possible thanks to the peculiar morpho-functional organization that characterizes their genital system and that allows...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2014.05.007
更新日期:2014-08-01 00:00:00
abstract::A cell line BmN-SWU1 was established from the ovarian tissues of 3-day-old fourth instar Bombyx mori larvae of the 21-872nlw variety by performing primary cultures in Grace's medium supplemented with 20% fetal bovine serum (FBS). The cell line primarily consisted of short spindle cells and round cells. The frequency o...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2009.07.002
更新日期:2010-02-01 00:00:00
abstract::Morphological and functional changes caused by diabetes in the accessory sex organs and especially the prostate have been reported by several investigators. The aim of the present study was to examine the possible deleterious effects of experimentally induced diabetes on the secretory epithelium of the ventral prostat...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1054/tice.2000.0123
更新日期:2000-08-01 00:00:00
abstract::The electron microscopical changes in the glial lacunar network that surrounds the large neurons of meso- and metacerebrum of land snail cerebral ganglia were considered, in order to get an insight into the functional role of this peculiar structure in invertebrates. Compared with snails during the active period, in t...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/s0040-8166(97)80056-0
更新日期:1997-10-01 00:00:00
abstract::The albumen gland of Pomacea paludosa, a prosobranch gastropod, contains two main ducts. The albumen gland duct consists of a single layer of secretory and non-secretory cells. The surface of the non-secretory cells is covered with cilia. Microvilli are associated with the luminal edges of the secretory cells. Globule...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(84)90022-3
更新日期:1984-01-01 00:00:00
abstract::The paired ovaries of young larva of the 3rd instar of Orthezia urticae are filled with numerous germ cell clusters that can be regarded as ovariole anlagen. Germ cells (cystocytes) belonging to one cluster form a rosette, in the centre of which a polyfusome occurs. Staining with rhodamine-phalloidin has revealed that...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/s0040-8166(97)80069-9
更新日期:1997-02-01 00:00:00
abstract::It is currently admitted that the synthesis and excretion of triglyceride-rich lipoproteins (chylomicrons and 'small chylomicrons') by intestinal epithelial cells involves the Golgi apparatus as an obligatory final step before exocytosis. The cells of the proximal intestine of the trout are an excellent model for inve...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(86)90064-9
更新日期:1986-01-01 00:00:00
abstract::Cell proliferation and apoptosis regulate germ cells stock and sperm production, eliminate anomalous gametes, and are essential parameters to consider in fish farming. Herein, spermatogenic activity as well as germ cell proliferation and apoptosis were assessed in Leporinus taeniatus, a seasonal breeding species from ...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2017.09.003
更新日期:2017-12-01 00:00:00
abstract::A morphological and ultrastructural study was carried out on the spermatophore and spermatodoses of some species of Orthoptera Tettigoniidae. From the results concerning the spermatophore it emerged that this structure has a morphological and ultrastructural organization represented by a dilated ampulla and a peduncle...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/s0040816602000344
更新日期:2002-10-01 00:00:00
abstract::In order to determine the extent and variations in surface concavanalin A (CON A) and wheat germ agglutinin (WGA) labeling of different varieties of normal blood cells, gluraraldehyde-fixed human blood cells were exposed to CON A-gold labeled horseradish peroxidase (CON A-HRP-G) and WGA-gold labeled ovomucoid (WGA-OVO...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(83)90042-3
更新日期:1983-01-01 00:00:00
abstract::Two fracture faces in each half of the freeze-fractured tegumental membrane of adult Schistosoma mansoni indicate the presence of two trilaminate membranes. This result is compatible with the heptalaminate appearance of the tegumental membrane in ultrathin sections. Intramembranous particles are located mainly in the ...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(75)90020-8
更新日期:1975-01-01 00:00:00
abstract::Head and neck cancers are common in several regions of the world and the treatment usually includes radiotherapy. This treatment can generate adverse effects to the salivary flow, with a relationship between the dose and the damage caused. Salivary gland cells are highly permeable to water and therefore, they express ...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2018.06.006
更新日期:2018-08-01 00:00:00
abstract::This study evaluated ulceroprotective and antioxidant effect of 1,25 dihydroxyvitamin D3 against gastric damage in rats. Rats were treated intraperitoneally with either 1,25 dihydroxyvitamin D3 (0.25 μg/kg) or saline for 14 days. On day-15, the non-selective cyclooxygenase inhibitor indomethacin (10 mg/kg; subcutaneou...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2018.03.003
更新日期:2018-04-01 00:00:00
abstract::Pelagic amphipods belonging to the genus Phronima have four compound eyes; two lateral eyes and two large transparent medial eyes which comprise the entire top of the head. The eyes are structurally similar but the crystalline cones of the medial eyes are more than twenty times as long as those of the lateral eyes, re...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(77)90010-6
更新日期:1977-01-01 00:00:00
abstract::Cellular aggregates or nodules which formed in Galleria mellonella larvae in response to injections of killed Bacillus cereus were examined during their first 24 hr of development. The initial aggregation stage was very rapid, occurring within 1 min, and was brought about by the release of an adhesive flocculent mater...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(77)90050-7
更新日期:1977-01-01 00:00:00
abstract::Acinar cells of extraorbital lacrimal glands from control, pilocarpine-treated, atropine-treated and atropine + pilocarpine-treated rats were studied using a potassium pyroantimonate technique and X-ray microanalysis for calcium localization at the ultrastructural level. This was done in order to identify intracellula...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(82)90062-3
更新日期:1982-01-01 00:00:00
abstract::Lactational function in the mammary epithelial cell is subject to complex regulation, most probably involving multiple extracellular and intracellular proteins that act at any of a number of levels. Although some of these proteins have been identified it is likely that additional controllers of lactation exist, but ha...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/s0040-8166(97)80051-1
更新日期:1997-10-01 00:00:00
abstract::The expression of alpha(1a)-adrenoreceptors (alpha(1a)-ARs) within the muscle spindles of rabbit masseter muscle was investigated. The alpha(1a)-ARs were detected by immunohistochemical fluorescent method and examined along the entire length of 109 cross serially sectioned spindles. The sympathetic fibers were visuali...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/j.tice.2005.12.003
更新日期:2006-04-01 00:00:00
abstract::Epithelial and peritubular cells associated with the reproductive tract of the snail, Limnaea stagnalis, contain an extensive system of endoplasmic reticulum that is often dilated with many closely packed intracisternal tubules. The intracisternal tubules are approximately 24-28 nm in diameter and they are often hexag...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(84)90059-4
更新日期:1984-01-01 00:00:00
abstract::Direct reprogramming of specialized cells into other cell types has revolutionized the fields of stem cell, differentiation, and regenerative medicine. Direct reprogramming technology can convert various differentiated cell types to other fates by the forced expression of lineage-specific transcription factors. In add...
journal_title:Tissue & cell
pub_type: 杂志文章,评审
doi:10.1016/j.tice.2016.07.005
更新日期:2016-10-01 00:00:00
abstract::On dark-adaptation of the 11-day adult eye, the rhabdomers move towards the cuticle. Each c-c-r array (of tandem centrioles and ciliary root) maintains its position relative to the rhabdomere, and the length of the root is apparently unchanged. The close association of the array with the rhabdomere is not established ...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(75)90038-5
更新日期:1975-01-01 00:00:00
abstract::Bone substitutes are used in nearly half of all musculoskeletal surgeries. The "gold standard" graft is an autograft that is limited by supply and site morbidity. Therefore, allograft sources are the current alternative for clinical practice with some side effects, such as immune responses and risk of disease transmis...
journal_title:Tissue & cell
pub_type: 杂志文章,评审
doi:10.1016/j.tice.2021.101494
更新日期:2021-01-16 00:00:00
abstract::A novel type of pore canal is described from the cuticle of three species of Gammarus. Each canal passes from the epidermis vertically through the endocuticle and exocuticle, and in the most distal layers of the latter is slightly expanded. Before entering the epicuticle the canal narrows, forming a neck the base of w...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(78)90053-8
更新日期:1978-01-01 00:00:00
abstract::The compound eye of the opaque-eye mutant of Drosophila melanogaster was investigated by means of electron microscopy to determine the morphological and physical properties of ommatidial elements. These elements in the mutant were found to differ from those of the wild-type flies in the following ways: (1) The cuticul...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(75)90034-8
更新日期:1975-01-01 00:00:00
abstract::This study is designed to better understand the function of the Müller cells of the retina through the use of silicon particles that had been injected into the vitreous body of the eye and via an analysis of the number of gap junctions associated with these cells. Following intraocular injection of a silicone oil mixt...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(93)90028-j
更新日期:1993-01-01 00:00:00
abstract::The early maturation stages of definitive erythroid cells are observed in the embryonic circulation of the chick yolk sac at 4.5--5 days of incubation. Light and electron microscope observation of the mesoderm of the yold sac membrane indicate that individual presumptive precursors of the definitive-line are present a...
journal_title:Tissue & cell
pub_type: 杂志文章
doi:10.1016/0040-8166(78)90029-0
更新日期:1978-01-01 00:00:00