Immunofluorescence studies on the distribution of mouse uterine epithelial antigen in foetal, immature and adult mice

Development ◽  
1969 ◽  
Vol 21 (1) ◽  
pp. 85-95
Author(s):  
John-Gunnar Forsberg ◽  
Lennart Nord
Keyword(s):  
Cellular Differentiation ◽  
Specific Antigen ◽  
Specific Cell ◽  
Zymogen Granules ◽  
Chemical Methods ◽  
Adult Mice ◽  
Immunofluorescence Studies ◽  
Specific Antigens ◽  
Pancreatic Exocrine ◽  
Cell Changes

In an investigation of cellular differentiation processes, it is of great value to be able to study the appearance of specific cell products. Systems permitting this include pancreatic exocrine cells which make zymogen granules and amylase (Grobstein, 1964), the myoblast which produces myosin (Konigsberg, 1965), the chondrocyte which makes chondroitin and chondroitin synthesizing enzymes (Lash, Glick & Madden, 1964), and the melanocyte which makes melanin (Wilde, 1961). In other cases, such well-defined products are not known or are difficult to obtain and it is therefore necessary to turn to other methods for investigations of specific cell changes. Histochemical methods have been widely used but frequently give unspecific results. Advantages are obtained by using immuno-chemical methods which can demonstrate the appearance of organ- or tissue-specific antigen (Dumonde, 1966). The differentiation of the lens has been extensively studied by immuno-histological methods (for reviews, see Halbert & Manski, 1963; Dumonde, 1966). The appearance of kidney-specific antigens during metanephros differentiation was studied by Lahti & Saxén (1966).

scholarly journals Serological Assays for Identification of Human Gastric Colonization by Helicobacter pylori Strains Expressing VacA m1 or m2

2007 ◽  
Vol 14 (4) ◽  
pp. 442-450 ◽  
Author(s):  
Chandrabali Ghose ◽  
Guillermo I. Perez-Perez ◽  
Victor J. Torres ◽  
Marialuisa Crosatti ◽  
Abraham Nomura ◽  
...  
Keyword(s):  
Helicobacter Pylori ◽  
Asian American ◽  
Specific Antigen ◽  
Secreted Protein ◽  
Gastric Epithelial Cells ◽  
Allele Specific ◽  
Risk Of Disease ◽  
Specific Antigens ◽  
H Pylori ◽  
Development Of Gastric Cancer

ABSTRACT The Helicobacter pylori vacA gene encodes a secreted protein (VacA) that alters the function of gastric epithelial cells and T lymphocytes. H. pylori strains containing particular vacA alleles are associated with differential risk of disease. Because the VacA midregion may exist as one of two major types, m1 or m2, serologic responses may potentially be used to differentiate between patients colonized with vacA m1- or vacA m2-positive H. pylori strains. In this study, we examined the utility of specific antigens from the m regions of VacA as allele-specific diagnostic antigens. We report that serological responses to P44M1, an H. pylori m1-specific antigen, are observed predominantly in patients colonized with m1-positive strains, whereas responses to VacA m2 antigens, P48M2 and P55M2, are observed in patients colonized with either m1- or m2-positive strains. In an Asian-American population, serologic responses to VacA m region-specific antigens were not able to predict the risk of development of gastric cancer.

scholarly journals Chimeric Maternal Cells with Tissue-Specific Antigen Expression and Morphology Are Common in Infant Tissues

2009 ◽  
Vol 12 (5) ◽  
pp. 337-346 ◽  
Author(s):  
Anne M. Stevens ◽  
Heidi M. Hermes ◽  
Meghan M. Kiefer ◽  
Joe C. Rutledge ◽  
J. Lee Nelson
Keyword(s):  
Islet Cells ◽  
Tissue Injury ◽  
Specific Antigen ◽  
Antigen Expression ◽  
Cell Types ◽  
Target Cells ◽  
Specific Cell ◽  
Tissue Specific ◽  
Renal Tubular Cells ◽  
Parenchymal Cells

Maternal microchimerism (MMc) has been purported to play a role in the pathogenesis of autoimmunity, but how a small number of foreign cells could contribute to chronic, systemic inflammation has not been explained. Reports of peripheral blood cells differentiating into tissue-specific cell types may shed light on the problem in that chimeric maternal cells could act as target cells within tissues. We investigated MMc in tissues from 7 male infants. Female cells, presumed maternal, were characterized by simultaneous immunohistochemistry and fluorescence in situ hybridization for X- and Y-chromosomes. Maternal cells constituted 0.017% to 1.9% of parenchymal cells and were found in all infants in liver, pancreas, lung, kidney, bladder, skin, and spleen. Maternal cells were differentiated: maternal hepatocytes in liver, renal tubular cells in kidney, and β-islet cells in pancreas. Maternal cells were not found in areas of tissue injury or inflammatory infiltrate. Maternal hematopoietic cells were found only in hearts from patients with neonatal lupus. Thus, differentiated maternal cells are present in multiple tissue types and occur independently of inflammation or tissue injury. Loss of tolerance to maternal parenchymal cells could lead to organ-specific “auto” inflammatory disease and elimination of maternal cells in areas of inflammation.

Differentiation of kidney antigens in the human foetus

Development ◽  
1969 ◽  
Vol 21 (3) ◽  
pp. 517-537
Author(s):  
Ewert Linder
Keyword(s):  
Chick Embryo ◽  
Specific Antigen ◽  
Mouse Kidney ◽  
Human Foetus ◽  
Specific Antigens ◽  
Number Of Authors

The appearance of new antigens in the embryo during differentiation has been investigated by a number of authors. Among the proteins studied were myosin (Holtzer, 1961; Ebert, 1962), Jens crystallin (Ten Cate & Van Doorenmaalen, 1950), chick embryo haemoglobin (Wilt, 1962), and keratin during feather formation in chick embryo (Ben-Or & Bell, 1965). The development of liver proteins in the chick embryo was studied by D'Amelio, Mutolo & Piazza (1963). Okada & Sato (1963) and Okada (1965) studied the appearance of a ‘kidney-specific’ antigen in the developing mesonephros. Lahti & Saxen (1966) demonstrated the appearance of mouse kidney-specific tubule antigens during development both in vivo and in vitro. ‘Kidney-specific’ antigens are found in the metanephric proximal secreting tubules of various mammals (Hill & Cruickshank, 1953; Weiler, 1956; Groupe & Kaplan, 1967; Nairn, Ghose & Maxwell, 1967), including man (Nairn, Ghose, Fothergill & McEntegart, 1962), and in the mesonephric tubules of birds.

scholarly journals Ultrastructural Changes in the Pancreata of Selenium-Vitamin E-Deficient Chicks

1977 ◽  
Vol 14 (6) ◽  
pp. 629-642 ◽  
Author(s):  
A. H. Rebar ◽  
J. F. Van Vleet
Keyword(s):  
Endoplasmic Reticulum ◽  
Vitamin E ◽  
Acinar Cell ◽  
Interstitial Fibrosis ◽  
Ultrastructural Changes ◽  
Zymogen Granules ◽  
Cell Cytoplasm ◽  
Torula Yeast ◽  
Cell Changes ◽  
Ductular Proliferation

Three hundred and seventy 1-day-old male, white Leghorn chicks were divided into seven groups and fed a series of semipurified torula yeast diets either deficient in or supplemented with selenium and vitamin E. Chicks in each group were necropsied sequentially and the pancreata examined by light microscopy. Selected pancreata of selenium deficient chicks in various stages of the deficiency disease were examined by electron microscopy. Supplements of either selenium (0.2 mg/kg) or vitamin E (100 IU/kg diet) resulted in protection against pancreatic lesions. Changes in pancreata of selenium deficient chicks progressed from cytoplasmic vacuolation of acinar cell cytoplasm to focal disseminated acinar necrosis. There was ductular proliferation and interstitial fibrosis in advanced lesions. Acini around islets were less frequently affected than acini further away. Ultrastructurally, the mildest lesions were focal dilation of the endoplasmic reticulum and autophagic vacuoles in acinar cell cytoplasm. Necrotic areas contained both membranous and granular debris and fragments of intact endoplasmic reticulum. In fibrotic pancreata the main acinar cell changes were uniform dilation of endoplasmic reticulum and reduction in number of zymogen granules.

scholarly journals A new Salmonella type possessing a hitherto undescribed non-specific antigen

1937 ◽  
Vol 37 (3) ◽  
pp. 384-387 ◽  
Author(s):  
Philip R. Edwards
Keyword(s):  
New Brunswick ◽  
Specific Antigen ◽  
New Type ◽  
Specific Antigens

The designation, Newington, is proposed for those cultures ofS. anatumhaving the antigenic formula III XV:eh: 1, 4, 6. A new type, New Brunswick, is described which is represented by the formula III XV:lv: 1, 7 +. Attention is called to the inadequacy of the symbols currently employed in the representation of the non-specific antigens to express correctly the non-specific phases of the Nyborg and New Brunswick types.

scholarly journals c-mos proto-oncogene RNA transcripts in mouse tissues: structural features, developmental regulation, and localization in specific cell types.

1987 ◽  
Vol 7 (5) ◽  
pp. 1629-1637 ◽  
Author(s):  
F Propst ◽  
M P Rosenberg ◽  
A Iyer ◽  
K Kaul ◽  
G F Vande Woude
Keyword(s):  
Developmental Regulation ◽  
Cell Types ◽  
Structural Features ◽  
Specific Cell ◽  
Cell Fractionation ◽  
Gonadal Tissue ◽  
Rna Transcripts ◽  
Adult Mice ◽  
Germ Cell Differentiation ◽  
Mouse Tissues

c-mos RNA transcripts have been previously detected in mouse gonadal tissue and in late-term embryos. Here, we show that they are also present at low levels in placenta and in adult mouse brain, kidney, mammary gland, and epididymis. Marked differences are observed in the size of the mos RNA transcripts detected in different tissues. All transcripts appear to end at the same 3' position, and the tissue-specific size variations appear to be due to the use of different promoters. For example, the testicular and ovarian RNA transcripts initiate approximately 280 and approximately 70 base pairs, respectively, upstream from the first initiation codon, but both end at a common site downstream from the mos open reading frame. The expression of mos is developmentally regulated in gonadal tissue. Thus, the level of mos transcripts in testes is low for the first 3 weeks after birth, increases at least 10-fold around day 25, and reaches adult levels by day 30. In contrast, ovaries from preweaning mice contain a higher level of mos mRNA compared to ovaries from adult mice. In cell fractionation experiments we show that mos transcripts are present in haploid germ cells. We find that these transcripts are associated with monosomes and polysomes. The peculiar pattern of mos expression in mouse gonadal tissue suggests a role for the c-mos proto-oncogene in germ cell differentiation.

scholarly journals STRUCTURE OF TYPE 5 ADENOVIRUS

1963 ◽  
Vol 118 (2) ◽  
pp. 295-306 ◽  
Author(s):  
Wesley C. Wilcox ◽  
Harold S. Ginsberg
Keyword(s):  
Virus Particle ◽  
Density Gradient ◽  
Infectious Virus ◽  
Relative Proportion ◽  
Specific Antigen ◽  
Equilibrium Density ◽  
Virus Particles ◽  
Infected Cells ◽  
Specific Antigens ◽  
Virus Antigens

Type 5 adenovirus was purified by fluorocarbon (freon 113) treatment followed by banding in a CsCl equilibrium density gradient. This method permitted separation of virus from normal host cell materials and virus-specific soluble antigens. Virus banded in CsCl with a mean bouyant density of 1.3349 gm/cm3. The three virus-specific soluble antigens (group- and type-specific antigens and toxin) banded together with a mean bouyant density of 1.2832 gm/cm3. The group-specific antigen was the predominant antigen of the purified virus particle, whereas the group- and type-specific antigens were present in equal titers in the antigen band. Infectious virus particles were inactivated by prolonged dialysis at pH 10.5. Centrifugation of inactivated virus preparations in a CsCl equilibrium density gradient resulted in separation of virus DNA from specific antigen: the antigens banded with a mean bouyant density of 1.2832 gm/cm3 and the DNA sedimented to the bottom of the tube. The predominant antigen derived from purified virus particles was the group-specific antigen and it was in the same relative proportion to the type-specific antigen as measured in intact particles. The antigens derived from disrupted virus were immunologically identical with the soluble virus antigens present in infected cells.

Abstract 45: Systemic Illness in Ece1 Ablated Adult Mice

2015 ◽  
Vol 117 (suppl_1) ◽  
Author(s):  
Jasmin Kristianto ◽  
Michael Johnson ◽  
Abigail Radcliff ◽  
Jill Koch ◽  
Timothy Hacker ◽  
...  
Keyword(s):  
Specific Cell ◽  
Apparent Paradox ◽  
Tissue Mass ◽  
Knock Out ◽  
Adult Disease ◽  
Disease States ◽  
Mandibular Hypoplasia ◽  
Adult Mice ◽  
Ectopic Activation ◽  
Multiple Abnormalities

Endothelin converting enzyme-1 (ECE1) catalyzes the conversion of inactive big endothelin 1 (ET1) to active ET1. Homozygous Ece1 knock out (KO) mice die in utero or at birth, displaying multiple abnormalities including mandibular hypoplasia and cardiac outflow tract malformations, in spite of the presence of ample tissue ET1. However, increased ECE1 activity and circulating and/or tissue ET1 are associated with many adult cardiovascular diseases, including idiopathic pulmonary fibrosis (IPF), a chronic and fatal lung disease. There is an apparent paradox between the need for ET1 in development and its harmful effects in adult disease. Therefore, our lab developed a conditional Ece1 KO mouse, in which Ece1 is ablated following tamoxifen (tam) treatment. We hypothesized that ECE1 serves to localize ET1 signals to specific cell populations and is essential in normal adult physiology. We studied the following groups: mice given vehicle rather than tam, mice lacking tam-inducible Cre recombinase, mice harboring a normal Ece1 allele ( Ece1 +/flox ), and the experimental animals (Cre Ece1 -/flox ). Mice were treated with vehicle or tam at 8-9 weeks of age. Cre Ece1 -/flox mice showed 85-100% mRNA knock-down efficiency 8 weeks after tam treatment. By 17 weeks of age, Cre Ece1 -/flox mice have tachypnea, decreased activity, and weight loss, requiring euthanasia for humane considerations. They display depleted adipose tissue mass compared to controls. By two weeks after treatment, Cre Ece1 -/flox mice had lower blood pressure relative to controls, which persisted until euthanasia at 17-20 weeks old (p=0.004). Between 17-20 weeks of age, most of Cre Ece1 -/flox mice develop pectus excavatum, enlarged right hearts and have reduced stroke volume and cardiac output as analyzed by echocardiography. Histological examination revealed eosinophilic crystalline pneumonia and increased collagen in the lung and heart. These findings are consistent with development of IPF in the experimental mice. Our findings show that Ece1 ablation in post-natal animal results in a severe cardiorespiratory disease, suggesting that ectopic activation of ET1 by other tissue proteases is the primary mechanism underlying the association of increased ET1 signaling in disease states.

scholarly journals Lack of Rhesus antigen expression by human committed erythroid progenitors

Blood ◽  
1983 ◽  
Vol 61 (3) ◽  
pp. 525-529 ◽  
Author(s):  
A Rearden ◽  
P Chiu
Keyword(s):  
Specific Antigen ◽  
Antigen Expression ◽  
Inhibitory Effect ◽  
Significant Inhibition ◽  
Specific Cell ◽  
Erythroid Progenitors ◽  
Drug Induced ◽  
Erythroid Progenitor ◽  
Differentiation Marker ◽  
D Antigen

Abstract The D antigen of the Rhesus blood group, an erythroid-specific cell surface marker, is expressed by all morphologically recognizable human nucleated red blood cell precursors including, in low density, the pronormoblast. The object of the present study was to determine the expression of the D antigen by committed erythroid progenitors. Under conditions that produced complete inhibition of BFU-E and CFU-E by known cytotoxic antisera, no significant inhibition was produced by anti-D. Use of anti-human IgG (rabbit) to increase sensitivity and trypsinization to reveal cryptic Rh determinants were both without inhibitory effect. Erythroid bursts and colonies grew normally in methylcellulose that contained anti-D. The addition of anti-D to day 7 BFU-E did not inhibit their proliferation to mature bursts at day 14. These results suggest that the D antigen is not expressed by human committed erythroid progenitor cells. The D antigen is therefore an erythroid-specific differentiation marker, rather than an erythroid- lineage-specific antigen. The development of expression of the D antigen during erythropoiesis parallels that of band 3 protein, to which anti-D has been reported to bind. Lack of Rh expression by committed erythroid progenitors is consistent with the rarity of red cell aplasia in Rhesus hemolytic disease of the newborn and in idiopathic and drug-induced autoimmune hemolytic anemia in which the autoantibodies have apparent Rh specificity. These results imply that Rh compatibility is not a contraindication to human bone marrow transplantation.

The significance of antibody to the psittacosis–L.G.V. group antigen

1969 ◽  
Vol 15 (10) ◽  
pp. 1173-1178
Author(s):  
H. Wyman ◽  
C. Rigby ◽  
J. C. Wilt ◽  
J. A. Hildes
Keyword(s):  
Northwest Territories ◽  
Specific Antigen ◽  
Egg Yolk ◽  
Serum Samples ◽  
The North ◽  
Antigen Present ◽  
High Incidence ◽  
Causative Agents ◽  
Specific Antigens ◽  
Animal Reservoirs

Antibody to the psittacosis–lymphogranuloma venereum (psittacosis–L.G.V.) group antigen was present in 88% of serum samples collected in 1967 from 100 persons at Eskimo Point, Northwest Territories (N.W.T.), thus confirming previous reports of a high incidence of this antibody in Northern residents. The present study to determine the significance of these antibodies, excluded the possibility that they had been formed in response to a heterophile antigen present in bacteria, rickettsia, or egg yolk, While the sera of Manitobans that reacted with the group antigen also reacted with a specially prepared specific antigen of psittacosis, none of the Eskimo sera that reacted with the group antigen reacted with the specific antigens prepared from psittacosis or meningopneumonitis. The antibody against the group antigen was totally adsorbed with live meningopneumonitis group antigen. These findings, plus the fact that some chlamydial diseases do not occur in the North, and that the animal reservoirs of other chlamydia do not exist in the North, limit the possible causative agents of these antibodies to ornithosis, human pneumonitis, and animal pneumonitis. Evidence suggests that a unique, endemic chlamydial agent stimulated the production of these antibodies; further work will be required to determine which particular member of the chlamydial group is responsible, and to demonstrate its reservoir.

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