Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P06889 (Mol)
 630,302 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Vacuolation in fibroblasts cultivated in the presence of sucrose is associated with progressive accumulation of the undigestible sugar. In radioisotope experiments the process lasted several days, and when the cells were subcultured back into a medium devoid of sucrose the label was also lost after several days. This type of vacuolated cells is more fragile when it is challenged with lytic agents. 51Cr-labelled LS fibroblasts released more radioactivity when they had been growing in the presence of sucrose, whether they were suspended in media of decreasing osmolarity, in dilutions of various surfactants, exposed to high temperatures, or subjected to mechanical stress. It is concluded that these cells exhibit a lower resistance when exposed to unfavourable environments, but retain their viability in growth media despite some morphological and biochemical alterations.
Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Lowered resistance to lytic agents in sucrose vacuolation. 4 52


Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Effects of chronic administration of thioacetamide (TAA) on the structure of bile canaliculi and tight junctions in the rat liver as revealed by freeze-fracturing. 4 53

In a population of cells that proportion which is actively engaged in the proliferative cycle is often estimated from the ratio of the observed labelling index to an expected labelling index, calculated, on the basis of all cells being in cycle, from the cell cycle phase durations and the age distribution. Ignoring the variability in cell cycle times may lead to large overestimates or underestimates in the expected labelling index. A method is given of obtaining a more accurate estimate of this variable, and hence of the proliferative proportion.
Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Estimating the proportion of proliferating cells in a population. 4 54


Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Cell proliferation at different sites along the length of the rat colon. 4 55

Human splenic sinuses were observed for the induction of alkaline phosphatase (AP) activity in mucopolysaccharidoses of type I and II, in GM1 gangliosidosis, and in Niemann-Pick's disease, type A. A substantially lower degree of activity was found in Sanfillipo's disease, type A, and in hemosiderin pigmentation of the sinuses. In a number of hematological affections and in control spleens AP activity could not be proved by histochemical means. From the formal pathogenetic view, enzyme activity induction is probably related to lysosomal deposition of the material stored.
Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Alkaline Phosphatase Activity Induction in Human Spleen Sinuses in Storage Diseases. 4 56

Histochemical observations were made of the activities of nucleosidephosphatases splitting ATP, ADP, IDP, and AMP and exopeptidases splitting l-alanine, l-leucine and l-glycyl-proline in the spleen sinuses of man, mouse, rat, hamster, and rabbit. Of the exopeptidases, only glycylprolyl-naphthylamidase could be proved histochemically, and that only in man and rat. Nucleosidephosphatases showed only traces of activity except in the rabbit where there was highly active AMP-ase, the others being moderately active.
Virchows Arch B Cell Pathol Incl Mol Pathol 1979 Dec
PMID:Comments on spleen sinus enzyme equipment. A histochemical study. 4 57


Exp Mol Pathol 1975 Dec
PMID:Incorporation of glucosamine-3H into extracellular gamma-globulin by Ehrlich ascites tumor cells. 5 61

DNA synthesis in vitro using intact duplex T7 DNA as template is dependent on a novel group of three phage T7-induced proteins: DNA-priming protein (activity which complements a cell extract lacking the T7 gene 4-protein), T7 DNA polymerase (gene 5-protein plus host factor), and T7 DNA-binding protein. The reaction requires, in addition to the four deoxyribonucleoside triphosphates, all four ribonucleoside triphosphates and is inhibited by low concentrations of actinomycin D. Evidence is presented that the priming protein serves as a novel RNA polymerase to form a priming segment which is subsequently extended by T7 DNA polymerase. T7 RNA polymerase (gene 1-protein) can only partially substitute for the DNA-priming protein. At 30 degrees C, deoxyribonucleotide incorporation proceeds for more than 2 hours and the amount of newly synthesized DNA can exceed the amount of template DNA by 10-fold. The products of synthesis are not covalently attached to the template and sediment as short (12S) DNA chains in alkaline sucrose gradients. Sealing of these fragments into DNA of higher molecular weight requires the presence of E.coli DNA polymerase I and T7 ligase. Examination of the products in the electron microscope reveals many large, forked molecules and a few "eye"-shaped structures resembling the early replicative intermediates normally observed in vivo.
Mol Gen Genet 1975 Dec 01
PMID:Studies on bacteriophage T7 DNA synthesis in vitro. II. Reconstitution of the T7 replication system using purified proteins. 5 68


Mol Cell Biochem 1977 Dec 29
PMID:Large scale separation of protease inhibitors from malignant human breast tissue. 7 99

Populations of normal anterior pituitary cells enriched in thyrotrophs or mammotrophs prepared by velocity sedimentation were used to investigate the effect of modulators of TSH and prolactin secretion on cyclic AMP accumulation. In both thyrotroph-enriched and mammotroph-enriched fractions, IBMX increased cyclic AMP accumulation. In the presence of IBMX, TRH invoked an increase in cyclic AMP suggesting that TRH modulates cyclic AMP accumulation in both of these cell types from normal pituitary glands. In the mammotroph-rich fraction, dopamine inhibited the increase in cyclic AMP induced by TRH. In contrast however, in the thyrotroph-enriched fraction dopamine lowered neither cyclic AMP concentration nor TSH secretion. Thus the inhibiting effect of dopamine on cyclic AMP appears to be specific for prolactin-secreting cells.
Mol Cell Endocrinol 1978 Dec
PMID:Effect of TRH and dopamine on cyclic AMP levels in enriched mammotroph and thyrotroph cells. 8 46


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