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P02.127. Recruitment strategies for community-based yoga research in a predominant minority population. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012. [PMCID: PMC3373598 DOI: 10.1186/1472-6882-12-s1-p183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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P02.60. Characteristics of treatment adherence in low-income minority participants in a yoga dosing study for chronic low back pain. Altern Ther Health Med 2012. [PMCID: PMC3373458 DOI: 10.1186/1472-6882-12-s1-p116] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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3
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Severe community-acquired pneumonia caused by macrolide-resistant Mycoplasma pneumoniae in a 6-year-old boy. Hong Kong Med J 2011; 17:407-409. [PMID: 21979480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
Mycoplasma pneumoniae is the commonest agent causing atypical pneumonia in children. Macrolides have long been used in the treatment of community-acquired pneumonia not responsive to beta-lactams alone. In this report, we describe the first locally acquired paediatric patient with severe community-acquired pneumonia caused by macrolide-resistant Mycoplasma pneumoniae, possessing an A-to-G transition at position 2063 of the 23s rRNA gene. In addition, we have detected two more strains of macrolide-resistant Mycoplasma pneumoniae out of a total of 10 cases with chest infection that were confirmed by polymerase chain reaction. Therefore macrolide-resistant Mycoplasma pneumoniae accounted for 33% (3 out of 10 patients) of the polymerase chain reaction-confirmed cases.
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SU-FF-T-226: Comparing the Sensitivity of Ionization Chamber Array to Film and Point Dose Measurement for IMRT Delivery Errors. Med Phys 2009. [DOI: 10.1118/1.3181702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Merosin-deficient congenital muscular dystrophy in two siblings. Hong Kong Med J 2004; 10:423-6. [PMID: 15591603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
Congenital muscular dystrophies are a group of heterogeneous inherited autosomal recessive disorders. The so-called 'pure' or 'occidental' form is further divided into merosin-positive and merosin-negative subgroups. Merosin is also expressed in the nervous system and its deficiency could affect development of the nervous system. The authors report two siblings with merosin-negative congenital muscular dystrophy. The clinical picture, biopsy findings, and abnormalities as detected by the magnetic resonance imaging of the two patients are presented.
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Polyadenylation of three classes of chloroplast RNA in Chlamydomonas reinhadtii. RNA (NEW YORK, N.Y.) 2000; 6:598-607. [PMID: 10786850 PMCID: PMC1369940 DOI: 10.1017/s1355838200992252] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
Three classes of RNA, represented by atpB and petD mRNAs, Arg and Glu tRNAs, and 5S rRNA, were found to exist in polyadenylated form in Chlamydomonas reinhardtii chloroplasts. Sequence analysis of cDNA clones derived from reverse transcriptase-polymerase chain reaction protocols used to select polyadenylated RNAs revealed that, at least for the mRNAs and tRNAs, there are three apparent types of polyadenylation. In the first case, the poly(A) tail is added at or near the mature 3' end, even when this follows a strong secondary structure. In the second case, the tail is added to pre-mRNA or pre-tRNA, suggesting a possible competition between polyadenylation and RNA-processing pathways. Finally, in all cases, the poly(A) tail can be added internally, possibly as a part of an RNA-decay pathway. The tails found in Chlamydomonas chloroplasts differ from those of spinach chloroplasts in adenine content, being nearly homopolymeric (>98% adenine) versus 70% in spinach, and are similar in length to those of Escherichia coli, being mostly between 20 and 50 nt. In vitro assays using a Chlamydomonas chloroplast protein extract showed that a 3' end A25 tail was sufficient to stimulate rapid degradation of atpB RNA in vitro, with a lesser effect for petD, and only minor effects on trnE. We therefore propose that polyadenylation contributes to mRNA degradation in Chlamydomonas chloroplasts, but that its effect may vary.
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MESH Headings
- Animals
- Base Sequence
- Chlamydomonas reinhardtii/cytology
- Chlamydomonas reinhardtii/genetics
- Chlamydomonas reinhardtii/metabolism
- Escherichia coli/genetics
- Genes, Protozoan/genetics
- Kinetics
- Molecular Sequence Data
- Molecular Weight
- Nucleic Acid Conformation
- Poly A/chemistry
- Poly A/genetics
- Poly A/metabolism
- RNA Precursors/chemistry
- RNA Precursors/genetics
- RNA Precursors/metabolism
- RNA Processing, Post-Transcriptional/genetics
- RNA Stability/genetics
- RNA, Chloroplast/chemistry
- RNA, Chloroplast/classification
- RNA, Chloroplast/genetics
- RNA, Chloroplast/metabolism
- RNA, Messenger/chemistry
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- RNA, Protozoan/chemistry
- RNA, Protozoan/classification
- RNA, Protozoan/genetics
- RNA, Protozoan/metabolism
- RNA, Ribosomal, 5S/chemistry
- RNA, Ribosomal, 5S/genetics
- RNA, Ribosomal, 5S/metabolism
- RNA, Transfer/chemistry
- RNA, Transfer/genetics
- RNA, Transfer/metabolism
- Spinacia oleracea/genetics
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7
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Prevalence of bloodborne pathogens in occupational exposure source patients: A six year experience. Am J Infect Control 1999. [DOI: 10.1016/s0196-6553(99)80044-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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8
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Innovation in pediatric ventilatory support: application of BiPAP at British Columbia's Children's Hospital. SCI NURSING : A PUBLICATION OF THE AMERICAN ASSOCIATION OF SPINAL CORD INJURY NURSES 1999; 16:21. [PMID: 10347541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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Abstract
The main objective of this study was to determine the nature of the relationship between aging and mitochondrial coenzyme Q (CoQ) content. Mitochondria in the heart, skeletal muscle, kidney and brain of the mouse varied in both the amount of total CoQ (CoQ9 + CoQ10) content as well as in the ratio of the CoQ9 to CoQ10. CoQ content declined with age only in the skeletal muscle. Caloric restriction (CR) resulted in an increase in the amount of CoQ9 in skeletal muscle mitochondria. This effect was partially reversible upon termination of the caloric restriction regimen. Results suggest that a decrease in mitochondrial CoQ content is an integral aspect of aging in skeletal muscle.
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Abstract
OBJECTIVE To study the efficacy of vigabatrin as initial therapy in infantile spasms. METHODOLOGY We reviewed seven patients with newly diagnosed infantile spasms referred to Tuen Mun Hospital, Hong Kong from 1994 to 1995. Vigabatrin was given as the initial monotherapy at therapeutic dose of 50-100 mg/kg. Efficacy was evaluated at the end of second week of treatment. RESULTS Significant improvement was observed in four patients, 50-75% seizure reduction in two and no response in one patient. Efficacy was noted within the first week of treatment in five of the six patients who responded. No adverse effects were observed. Vigabatrin monotherapy could be continued in five patients. CONCLUSION Vigabatrin could be considered as the first line treatment in infantile spasms. A period of 2 weeks may be sufficient to evaluate its efficacy.
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11
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Inositol phosphate levels in WRK-1 cells during hyperthermia. Biochem Soc Trans 1994; 22:207S. [PMID: 7958270 DOI: 10.1042/bst022207s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Effect of heat on 1,2-diacylglycerol and triacylglycerol levels in WRK-1 and CHO cells. Biochem Soc Trans 1993; 21:79S. [PMID: 8359534 DOI: 10.1042/bst021079s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Abstract
Growth failure is a major complication of chronic hypoxemia, as seen in infants and children with cyanotic congenital heart disease. To determine whether chronic hypoxemia during infancy affects the gastrointestinal tract, we examined small intestinal growth and digestive enzyme activities in chronically hypoxemic newborn lambs and in age-matched controls. Chronic hypoxemia was produced by placing an inflatable occluder around the main pulmonary artery and performing a balloon atrial septostomy. Aortic oxygen saturation was reduced to 60-74% for 2 wk, after which the small intestine was removed for analysis. During chronic hypoxemia, somatic growth rate was decreased to 60% of control (hypoxemic, 135 +/- 20 versus control, 216 +/- 26 g/d, p less than 0.02). No differences in caloric intake were found (hypoxemic, 129 +/- 4 versus control, 128 +/- 4 kcal/kg/d). Chronic hypoxemia did not alter small intestinal growth, as measured by jejuno-ileal weight, jejuno-ileal length, mucosal weight, or mucosal protein or DNA contents. However, sp act of lactase, the principal disaccharidase of the infant lamb intestine, were significantly decreased (hypoxemic, 0.08 +/- 0.01 versus control, 0.146 +/- 0.03 units of enzyme activity/mg DNA, p less than 0.05), as were the total small intestinal contents of lactase (hypoxemic, 61.7 +/- 7.0 versus control, 120.6 +/- 21.7 units of enzyme activity, p less than 0.01). There also were decreases in specific and total activities of other digestive enzymes such as maltase, amino-oligopeptidase, and alkaline phosphatase in hypoxemic intestine that did not achieve statistical significance.(ABSTRACT TRUNCATED AT 250 WORDS)
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Abstract
The differentiation inducing factor (DIF) is essential for stalk cell formation in monolayers of Dictyostelium discoideum and is necessary for the expression of several prestalk cell-specific genes. DIF activity has been fractionated into a major species, designated DIF-1, and several minor species, including DIF-2. Although DIF-1 is an excellent inducer of stalk cell formation from vegetative cells, it is a poor inducer of stalk cell formation from prestalk cells. In contrast, DIF-2 is more active for the conversion of prestalk cells into stalk cells, than for the conversion of vegetative cells to stalk cells. The same results were obtained regardless of whether chemically synthesized or naturally occurring components were utilized. In addition, stalk cell formation was three- to fourfold higher when vegetative cells were incubated with DIF-1 for a suboptimal period and then subsequently incubated with DIF-2, than when cells were incubated with DIF-2 first and then subsequently with DIF-1. These results indicate a distinct role for DIF-2 during stalk cell formation and suggest the possibility that DIF-1 and DIF-2 act sequentially.
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A Dictyostelium morphogen that is essential for stalk cell formation is generated by a subpopulation of prestalk cells. Development 1990; 110:303-10. [PMID: 2081467 DOI: 10.1242/dev.110.1.303] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The stalk cell differentiation inducing factor (DIF) has the properties required of a morphogen responsible for pattern regulation during the pseudoplasmodial stage of Dictyostelium development. It induces prestalk cell formation and inhibits prespore cell formation, but there is as yet no strong evidence for a morphogenetic gradient of DIF. We have measured DIF accumulation by monolayers of isolated prestalk and prespore cells in an attempt to provide evidence for such a gradient. DIF is accumulated in the largest quantities by a subpopulation of prestalk cells that specifically express the DIF-inducible genes pDd56 and pDd26. Since it has been shown recently that cells that express pDd56 are localized in the central core of the prestalk cell region of the pseudoplasmodia, our current results suggest a morphogenetic gradient generated by this region.
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Plasma apolipoprotein E, high density lipoprotein1 (HDL1) and urinary mevalonate excretion in pancreatectomized diabetic dogs: effects of insulin and lovastatin. Atherosclerosis 1990; 84:1-12. [PMID: 2248616 DOI: 10.1016/0021-9150(90)90002-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Hypercholesterolemia and increased concentrations of an apolipoprotein E (apoE)-containing HDL subclass, high density lipoprotein1 (HDL1) have been observed in streptozocin-alloxan diabetic dogs consuming normal amounts of dietary cholesterol. The aim of this study was to characterize the response of HDL1 and its targeting ligand, apoE, to insulin and HMG-CoA reductase inhibitor treatment in pancreatectomized diabetic dogs. Following induction of diabetes, plasma total cholesterol, HDL1, and apoE concentrations were all increased. Urinary mevalonate excretion, an index of cholesterol synthesis in humans, was 6-fold that of nondiabetic controls. Lipoprotein fractionation by Pevikon block electrophoresis and gel filtration chromatography showed that the increased cholesterol and apoE were associated with alpha 2-migrating particles corresponding to HDL1. Insulin treatment, resulting in near normal fasting blood glucose concentrations in the group as a whole (average 5.1 mM, 92 mg/dl), led to variable reductions in apoE, total plasma cholesterol, and HDL1. Uncorrected dyslipidemia during intensified insulin treatment appeared to be related to failure to achieve euglycemia. Despite unremitting hyperglycemia, treatment with lovastatin resulted in pronounced decreases in plasma cholesterol, HDL1 and apoE to concentrations below those observed in nondiabetic animals. Mevalonate excretion also fell, but remained twice normal. Thus neither modality corrected all of the abnormalities in canine diabetic dyslipidemia. Since apoE-containing HDL1 may mediate cholesterol traffic between the periphery and the liver (reverse cholesterol transport), the present observations suggest that increased cholesterol synthesis is accompanied by parallel abnormalities in cholesterol flux through the reverse transport pathway in the canine model.
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Studies on the accumulation of the differentiation-inducing factor (DIF) in high-cell-density monolayers of Dictyostelium discoideum. Dev Biol 1989; 132:554-8. [PMID: 2466719 DOI: 10.1016/0012-1606(89)90250-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A number of factors that have been shown to influence cell type determination in Dictyostelium discoideum were assessed for their effects on the accumulation of the stalk cell differentiation-inducing factor (DIF) in high-cell-density monolayers of strain V12-M2. DIF accumulation is markedly enhanced by low pH, butyrate, and the proton pump inhibitor diethylstilbestrol (DES), conditions that induce stalk cell formation in low-cell-density monolayers in the absence of added DIF. These results are discussed in relation to a model for cell type determination recently proposed by (J.D. Gross, M.J. Peacey, and R. Pogge Von Strandmann (1988, Differentiation, 38: 91-98). DIF accumulates in high-cell-density monolayers after the cells have become independent of cyclic AMP for stalk cell formation. This accumulation is greatly enhanced by the addition of cyclic AMP. This result may explain why cyclic AMP stimulates stalk cell formation in low-density monolayers in the presence of suboptimal levels of DIF, following preincubation in the presence of saturating levels of cyclic AMP (L. Kwong, A. Sobolewski, and G. Weeks, 1988, Differentiation 37, 1-6). Adenosine has no effect on DIF accumulation in high-cell-density monolayers.
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Stalk cell formation in monolayers from isolated prestalk and prespore cells of Dictyostelium discoideum: evidence for two populations of prestalk cells. Development 1988; 104:121-7. [PMID: 2855311 DOI: 10.1242/dev.104.1.121] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Cells from the pseudoplasmodial stage of Dictyostelium discoideum differentiation were dispersed and separated on Percoll gradients into prestalk and prespore cells. The requirements for stalk cell formation in low-density monolayers from the two cell types were determined. The isolated prespore cells required both the Differentiation Inducing Factor (DIF) and cyclic AMP for stalk cell formation. In contrast, only part of the isolated prestalk cell population required both cyclic AMP and DIF, the remainder requiring DIF alone, suggesting the possibility that there were two populations of prestalk cells, one independent of cyclic AMP and one dependent on cyclic AMP for stalk cell formation. The finding that part of the prestalk cell population required only a brief incubation in the presence of DIF to induce stalk cell formation, whilst the remainder required a considerably longer incubation in the presence of both DIF and cyclic AMP was consistent with this idea. In addition, stalk cell formation from cyclic-AMP-dependent prestalk cells was relatively more sensitive to caffeine inhibition than stalk cell formation from cyclic-AMP-independent prestalk cells. The latter cells were enriched in the most anterior portion of the migrating pseudoplasmodium, indicating that there is spatial segregation of the two prestalk cell populations. The conversion of prespore cells to stalk cells took longer and was more sensitive to caffeine when compared to stalk cell formation from cyclic-AMP-dependent prestalk cells.
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Stalk cell formation in monolayers of Dictyostelium discoideum V12-M2. DEVELOPMENTAL GENETICS 1988; 9:597-605. [PMID: 2854028 DOI: 10.1002/dvg.1020090436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Stalk cell formation in low-cell-density monolayers of Dictyostelium discoideum, strain V12-M2, occurs following the sequential addition of cyclic AMP and the differentiation-inducing factor (DIF). Both cyclic AMP and DIF are essential for the appearance of the prestalk-specific isozyme alkaline phosphatase-II, which suggests that both factors are necessary for prestalk cell formation. The available evidence suggests that the cyclic AMP requirement for stalk cell formation is mediated through the cell surface cyclic AMP receptor. However, stalk cell formation is inhibited by caffeine and this inhibition is reversed by the cell-permeable analogue 8-Br-cyclic AMP, which suggests in addition a possible involvement for elevated intracellular cyclic AMP concentrations in stalk cell formation. During in vivo development cells first become independent of cyclic AMP at the tipped aggregate stage, but the acquisition of cyclic AMP independence is advanced by several hours when cells are incubated in the presence of cyclic AMP for 2 hours. Cells do not become independent of DIF until the culmination stage of development, which suggests the possibility that DIF is required for the conversion of prestalk cells to stalk cells. There is an absolute requirement for DIF for stalk cell formation in low-density monolayers of prestalk cells but only part of population exhibits a requirement for cyclic AMP, which suggests that the prestalk cell population consists of two distinct cell types. Stalk cell formation from prespore cells is totally dependent on both cyclic AMP and DIF.(ABSTRACT TRUNCATED AT 250 WORDS)
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Abstract
Aerobic and anaerobic cultures as well as a Gram stain and wet mount preparation were made of vaginal swabs taken from various groups of women including those with vaginal discharge. The bacteria commonly found in cultures were lactobacilli, coryneforms, Staphylococcus epidermidis and facultative streptococci. Anaerobes were isolated from 75% (475 of 632) of specimens. The incidence of Trichomonas vaginalis, Candida species, Gardnerella vaginalis and Mobiluncus species in the five groups of women varied from 2.2-5.1%, 11.5-35.7%, 23.3-36.7% and 20.0-34.8% respectively. Except for Candida species, differences in the prevalence of these organisms between the groups of women were not significant. The isolation rates of Candida species in women attending the antenatal clinic and staff health clinic were significantly higher than women in the other groups. Mobiluncus species were found to occur either with T. vaginalis, Candida species or G. vaginalis alone or with any two or with all three or in the absence of these organisms. However, the incidence of Mobiluncus species was significantly higher in women colonized with G. vaginalis (112 of 185, or 60.5%) compared with women not infected (47 of 477, or 9.8%). Also, Mobiluncus species occurred in large numbers when found in the presence of G. vaginalis. When found without G. vaginalis, Mobiluncus species occurred in much smaller numbers. As with G. vaginalis, Mobiluncus species also occurred concomitantly with certain anaerobes, mainly Bacteroides species and peptostreptococci.
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The use of cytotoxic T cells in the regulation of tumour growth in syngeneic mice. Cancer Immunol Immunother 1984; 17:205-12. [PMID: 6332673 PMCID: PMC11039302 DOI: 10.1007/bf00205487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/1983] [Accepted: 05/05/1984] [Indexed: 01/19/2023]
Abstract
Normal C57BL/6 (B6) spleen cells were cultured with syngeneic EL4 tumour cells, expanded in IL2-containing medium, and tested for anti-tumour activity in vitro and in vivo. The activated cells were highly cytotoxic for EL4 and to a lesser degree killed syngeneic B6 blasts and allogeneic (D2) P815 tumour cells. B6 or BDF1 mice that received these cultured cells by IP injection cleared 125IUdR-labelled EL4 cells faster than untreated mice. However, this enhanced clearance was evident only 7-12 days after injection. Since the injected cells had a short half-life (less than 10% remaining after 48 h) the effect of these cells in vivo was most probably due to the activation of the host's immune system. Mice that received cultured cells survived significantly longer than untreated mice following a lethal dose of EL4 cells. Cultured cells were much more effective in prolonging survival when used in conjunction with cyclophosphamide (CY). In animals receiving either cultured cells with or without CY or CY alone tumour clearance was markedly enhanced 7-12 days after injection. When challenged with a small dose of EL4 tumour cells (1 X 10(4) SC per mouse) three of ten B6 mice treated with B6 anti-EL4 cultured cells were able to survive indefinitely. The frequency of CTL precursors to EL4 from the spleen cells of these surviving animals was about five-fold higher than that of normal spleen cells. Furthermore, CTL derived from primed spleen cells were more specific for EL4 than those derived from normal spleen cells.
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A simple method for the quantitation of specific cytotoxic precursors to syngeneic tumors. J Immunol Methods 1981; 46:97-111. [PMID: 7026690 DOI: 10.1016/0022-1759(81)90337-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Identification of 5-fluorocytidine in RNA from Escherichia coli grown in the presence of 5-fluorouracil. FEBS Lett 1973; 32:281-3. [PMID: 4354815 DOI: 10.1016/0014-5793(73)80853-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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