101
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Abdollahi A, Shalbaf S. Fibroadenoma of breast in Iranian women between 1994 and 2004. Breast Cancer Res 2005. [PMCID: PMC4231917 DOI: 10.1186/bcr1237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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102
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Plathow C, Li M, Gong P, Zieher H, Kiessling F, Peschke P, Debus J, Kauczor HU, Abdollahi A, Huber PE. Monitoring der strahleninduzierten Lungenfibrose im Mausmodell mittels Dünnschicht-Computertomographie. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-864020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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103
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Abdollahi A, Li M, Ping G, Plathow C, Groene HJ, Lee L, Lipson K, Huber P. 641 Inhibition of PDGF signaling attenuates radiation-induced pulmonary fibrosis. EJC Suppl 2004. [DOI: 10.1016/s1359-6349(04)80649-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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104
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Trinh T, Abdollahi A, Krempien R, Hlatky L, Lipson K, Huber P. SU5416 and SU6668 decrease angiogenic effects of radiation-induced factor productions by tumor cells and amplify the direct anti-endothelial action of radiation in vitro. Int J Radiat Oncol Biol Phys 2003. [DOI: 10.1016/s0360-3016(03)01194-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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105
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Huber P, Li M, Gong P, Plathow C, Peschke P, Groene H, Kiessling F, Zieher H, Debus J, Lipson K, Abdollahi A. Potential signaling and attenuation of radiation-induced lung fibrosis. Int J Radiat Oncol Biol Phys 2003. [DOI: 10.1016/s0360-3016(03)00937-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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106
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Abdollahi A, Debus J, Rastert R, Trinh T, Wollscheid V, Weber K, Hahnfeldt P, Ansorge W, Hlatky L, Wannenmacher M, Huber P. Expression profiling in hypoxia-treated human microvascular endothelial cells. Int J Radiat Oncol Biol Phys 2002. [DOI: 10.1016/s0360-3016(02)03099-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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107
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Han X, Abdollahi A, Weber K, Krempien R, Wannenmacher M, Debus J, Huber P. Effect of vascular endothelial growth factor (VEGF) and basic fibroblastic growth factor (bFGF) on radiosensitivity of human microvascular endothelial cells. Int J Radiat Oncol Biol Phys 2001. [DOI: 10.1016/s0360-3016(01)02103-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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108
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Abdollahi A, Han X, Lipson K, Howlett A, McMahon G, Weber K, Krempien R, Wannenmacher M, Debus J, Huber P. Combined effects of angiogenesis inhibitors and radiation on human microvascular endothelial cells. Int J Radiat Oncol Biol Phys 2001. [DOI: 10.1016/s0360-3016(01)02236-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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109
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Abdollahi A, Bao R, Hamilton TC. LOT1 is a growth suppressor gene down-regulated by the epidermal growth factor receptor ligands and encodes a nuclear zinc-finger protein. Oncogene 1999; 18:6477-87. [PMID: 10597250 DOI: 10.1038/sj.onc.1203067] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We previously reported cloning the rLot1 gene, and its human homolog (hLOT1), through analysis of differential gene expression in normal and malignant rat ovarian surface epithelial cells. Both human and rat ovarian carcinoma cell lines exhibited lost or decreased expression of this gene. Interestingly, the LOT1 gene localized at band q25 of human chromosome 6 which is a frequent site for LOH in many solid tumors including ovarian cancer. In this report we have further characterized the potential role of LOT1 in malignant transformation and developed evidence that the gene is a novel target of growth factor signaling pathway. Assays using transient transfections showed that LOT1 is a nuclear protein and may act as a transcription factor. In vitro and in vivo studies involving ovarian cancer cell lines revealed that expression of LOT1 is directly associated with inhibition of cellular proliferation and induction of morphological transformations. Additionally, we show that in normal rat ovarian surface epithelial cells Lot1 gene expression is responsive to growth factor stimulation. Its mRNA is strongly down-regulated by epidermal growth factor receptor (EGFR) ligands, namely EGF and TGF-alpha. Blocking the ligand-activated EGFR signal transduction pathway by the specific EGF receptor inhibitor, tyrphostin AG1478, and the MEK inhibitor, PD098059, restores the normal level of Lot1 gene expression. It appears that the regulation of Lot1 gene is unique to these ligands, as well as the growth promoting agent TPA, since other factors either did not affect Lot1 expression, or the effect was modest and transient. Altogether, the results suggest that Lot1 expression is primarily mediated via EGF receptor or a related pathway and it may regulate the growth promoting signals as a zinc-finger motif containing nuclear transcription factor.
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Sjin RM, Lord KA, Abdollahi A, Hoffman B, Liebermann DA. Interleukin-6 and leukemia inhibitory factor induction of JunB is regulated by distinct cell type-specific cis-acting elements. J Biol Chem 1999; 274:28697-707. [PMID: 10497240 DOI: 10.1074/jbc.274.40.28697] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Interleukin (IL)-6 plays an important role in a wide range of biological activities, including differentiation of murine M1 myeloid leukemic cells into mature macrophages. At the onset of M1 differentiation, a set of myeloid differentiation primary response (MyD) genes are induced, including the proto-oncogene for JunB. In order to examine the molecular nature of the mechanisms by which IL-6 activates the immediate early expression of MyD genes, JunB was used as a paradigm. A novel IL-6 response element, -65/-52 IL-6RE, to which a 100-kDa protein complex is bound, has been identified on the JunB promoter. Leukemia inhibitory factor (LIF)-induced activation of JunB in M1 cells was also mediated via the -65/-52 IL-6RE. The STAT3 and CRE-like binding sites of the JunB promoter, identified as IL-6-responsive elements in HepG2 liver cells were found, however, to play no role in JunB inducibility by IL-6 in M1 myeloid cells. Conversely, the -65/-52 IL-6RE is shown not to be necessary for JunB inducibility by IL-6 or LIF in liver cells. It appears, therefore, that immediate early activation of JunB is regulated differently in M1 myeloid cells than in HepG2 liver cells. This indicates that distinct cis-acting control elements participate in cell type-specific induction of JunB by members of the IL-6 cytokine superfamily.
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111
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Abdollahi A, Getts LA, Sonoda G, Miller PD, Taguchi T, Godwin AK, Testa JR, Hamilton TC. Genome scanning detects amplification of the cathepsin B gene (CtsB) in transformed rat ovarian surface epithelial cells. JOURNAL OF THE SOCIETY FOR GYNECOLOGIC INVESTIGATION 1999; 6:32-40. [PMID: 10065424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
OBJECTIVE To isolate a portion of the amplicon inferred to be present in a malignant rat tumor cell line, NuTu 26, by the presence of a homogeneously staining chromosomal region (hsr) and identify genes embedded within it. METHODS Genome scanning was used to identify an EcoRI fragment (8.6 kbp) within the amplified region of the NuTu 26 genome using a recently identified rat repetitive sequence, OST17 as a probe. The 8.6 kbp amplified fragment was sequenced and used as starting material to obtain additional sequence information by screening a P1 clone-derived DNA library to identify any genes likely embedded in the amplicon. Use of the microdissected hsr as a probe for fluorescence in situ hybridization (FISH) and application of Southern, Northern, and Western blot analysis confirmed the amplification of this region in the NuTu 26 genome. RESULTS The cathepsin B gene was within the amplicon of the hsr-containing marker chromosome of NuTu 26. FISH analysis and chromosomal banding further revealed that the marker chromosome was a derivative of chromosomes 4 and 15, i.e., der(15)t(4;15). CONCLUSION Cathepsin B gene amplification may contribute to some aspect of the biology of ovarian cancer. This concept is strengthened by the finding that the gene is overexpressed frequently in independently transformed rat ovarian surface epithelial cells.
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112
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Abdollahi A, Godwin AK, Miller PD, Getts LA, Schultz DC, Taguchi T, Testa JR, Hamilton TC. Identification of a gene containing zinc-finger motifs based on lost expression in malignantly transformed rat ovarian surface epithelial cells. Cancer Res 1997; 57:2029-34. [PMID: 9158001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have used a rat model of epithelial ovarian cancer to identify a gene that shows decreased or lost expression in five of eight independently transformed rat ovarian surface epithelial cell lines compared to the normal progenitor cells. Hence, we refer to this gene as Lot1 (lost on transformation 1; GenBank accession no. U72620). The most abundant transcript of the gene is approximately 6 kb. This sequence contains a 1749-nucleotide open reading frame and, within the 3' untranslated region, 22 near-perfect 60-70-bp repeats and adenine- and uracil-rich areas. The deduced amino acid sequence from the open reading frame contains seven zinc-finger motifs of the C2H2 type, as well as proline-, glutamine-, and glutamic acid-rich areas. The gene maps to the short arm of chromosome one in the rat. Lot1 shows a limited distribution of expression in normal rat tissues, including ovary, which shows abundant expression. Furthermore, examination of DNA derived from multiple species indicates that the gene is widely conserved.
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113
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Abdollahi A, Roberts D, Godwin AK, Schultz DC, Sonoda G, Testa JR, Hamilton TC. Identification of a zinc-finger gene at 6q25: a chromosomal region implicated in development of many solid tumors. Oncogene 1997; 14:1973-9. [PMID: 9150364 DOI: 10.1038/sj.onc.1201034] [Citation(s) in RCA: 84] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
We have used a rat model of epithelial ovarian cancer to identify a gene that shows decreased or lost expression in independently transformed rat ovarian surface epithelial cell lines compared to the normal progenitor cells. Hence, we refer to this gene as Lot-1 (Lost on transformation 1, GenBank accession no. U72620). Here, we report the cloning of the likely human homologue and its initial characterization. The deduced amino acid sequences of the cDNAs for rat and human LOT-1 (GenBank accession no. U72621) contain seven zinc finger motifs of the C2H2 type as well as proline and glutamine rich areas. The genes share 76.4% identity at the nucleotide level, 67.7% at the amino acid level and 85.5% within the seven zinc finger motifs. LOT-1 is ubiquitously expressed in normal human tissues but was not expressed in four of 11 (36%) human ovarian cancer cell lines or spontaneously transformed human ovarian surface epithelial cells. The human gene maps to chromosome 6 at band q25. We show that there is a 38% incidence of allelic loss at this chromosomal location in human ovarian cancers. This chromosomal region has also been implicated in the genesis of breast, kidney, and pleural mesothelial cancers. We suggest that this newly identified gene is not only of intrinsic interest as a ubiquitously expressed probable transcription factor but is a plausible candidate for the tumor suppressor gene which likely resides in the region of chromosome 6 defined by band q25.
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Staddon BW, Abdollahi A, Parry J, Rossiter M, Knight DW. Major component in male sex pheromone of cereal pestEurygaster integriceps puton (Heteroptera: Scutelleridae) identified as a homosesquiterpenoid. J Chem Ecol 1994; 20:2721-31. [DOI: 10.1007/bf02036203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/1994] [Accepted: 06/14/1994] [Indexed: 10/25/2022]
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Lord KA, Abdollahi A, Hoffman-Liebermann B, Liebermann DA. Proto-oncogenes of the fos/jun family of transcription factors are positive regulators of myeloid differentiation. Mol Cell Biol 1993; 13:841-51. [PMID: 8423806 PMCID: PMC358967 DOI: 10.1128/mcb.13.2.841-851.1993] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The proto-oncogenes c-jun, junB, junD, and c-fos recently have been shown to encode for transcription factors with a leucine zipper that mediates dimerization to constitute active transcription factors; juns were shown to dimerize with each other and with c-fos, whereas fos was shown to dimerize only with juns. After birth, hematopoietic cells of the myeloid lineage, and some other terminally differentiated cell types, express high levels of c-fos. Still, the role of fos/jun transcription factors in normal myelopoiesis or in leukemogenesis has not been established. Recently, c-jun, junB, and junD were identified as myeloid differentiation primary response genes stably expressed following induction of terminal differentiation of myeloblastic leukemia M1 cells. Intriguingly, c-fos, though induced during normal myelopoiesis, was not induced upon M1 differentiation. To gain further insights into the role of fos/jun in normal myelopoiesis and leukemogenicity, M1fos and M1junB cell lines, which constitutively express c-fos and junB, respectively, were established. It was shown that enforced expression of c-fos, and to a lesser extent junB, in M1 cells results in both an increased propensity to differentiate and a reduction in the aggressiveness of the M1 leukemic phenotype. M1fos cells constitutively expressed immediate-early and late genetic markers of differentiated M1 cells. The in vitro differentiation of normal myeloblasts into mature macrophages and granulocytes, as well as the increased propensity of M1fos leukemic myeloblasts to be induced for terminal differentiation, was dramatically impaired with use of c-fos antisense oligomers in the culture media. Taken together, these observations show that the proto-oncogenes which encode for fos/jun transcription factors play important roles in promoting myeloid differentiation. The ability of the M1 leukemic myeloblasts to be induced for terminal differentiation in the absence of apparent fos expression indicates that there is some redundancy among the fos/jun family of transcription factors in promoting myeloid differentiation; however, juns alone cannot completely compensate for the lack of fos. Thus, genetic lesions affecting fos/jun expression may play a role in the development of "preleukemic" myelodysplastic syndromes and their further progression to leukemias.
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Lord KA, Abdollahi A, Thomas SM, DeMarco M, Brugge JS, Hoffman-Liebermann B, Liebermann DA. Leukemia inhibitory factor and interleukin-6 trigger the same immediate early response, including tyrosine phosphorylation, upon induction of myeloid leukemia differentiation. Mol Cell Biol 1991; 11:4371-9. [PMID: 1908551 PMCID: PMC361299 DOI: 10.1128/mcb.11.9.4371-4379.1991] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Leukemia inhibitory factor (LIF) and interleukin-6 (IL-6), two multifunctional cytokines lacking structural homology and binding to distinct receptors, share interesting functional similarities, which include induction of hematopoietic differentiation in normal and myeloid leukemia cells, induction of neuronal cell differentiation, and stimulation of acute-phase protein synthesis in hepatocytes. Structural information on the LIF receptor is not yet available, whereas recent cloning of the IL-6 receptor has shown it to be bipartite, with a signal-transducing subunit that lacks sequence homology to known protein kinases and produces second messengers of unknown nature. The molecular nature of the mechanisms which LIF and IL-6 use to induce cell differentiation is not known. To address this issue, we took advantage of a clone of M1 myeloblastic leukemia cells capable of being induced for terminal differentiation by both LIF and IL-6 directly activate the same set of immediate early response genes upon induction of M1 myeloid differentiation. At least two mechanisms of gene activation, one transcriptional and the other posttranscriptional, are shown to be involved. It is also shown that the LIF and IL-6 immediate early response, at suboptimal cytokine concentrations, is additive. Using a variety of protein kinase activators and inhibitors, we have shown that the intracellular signalling pathways for both LIF and IL-6 are distinct from those of known second messengers and involve protein phosphorylation, notably tyrosine phosphorylation of a 160-kDa protein, as an essential step(s) in the immediate early activation of MyD gene expression. These observations indicate that the functional similarities of LIF and IL-6 as inducers of cell differentiation prevail at the level of the complex differentiation immediate early response and implicate common mechanisms of signal transduction for LIF- and IL-6-induced differentiation.
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Abdollahi A, Lord KA, Hoffman-Liebermann B, Liebermann DA. Interferon regulatory factor 1 is a myeloid differentiation primary response gene induced by interleukin 6 and leukemia inhibitory factor: role in growth inhibition. CELL GROWTH & DIFFERENTIATION : THE MOLECULAR BIOLOGY JOURNAL OF THE AMERICAN ASSOCIATION FOR CANCER RESEARCH 1991; 2:401-7. [PMID: 1793735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
To better understand the immediate early genetic response of myeloid cells to terminal differentiation and growth inhibitory stimuli, we have recently isolated complementary DNA clones of myeloid differentiation primary response (MyD) genes, activated in the absence of protein synthesis in M1 myeloid precursor cells following induction for terminal differentiation and growth arrest by conditioned media of mouse lungs, a potent physiological source of hemopoietic differentiation inducers. In this study, it is shown that one particular MyD complementary DNA clone, expressed highly in normal precursor enriched bone marrow cells, encodes for interferon regulatory factor 1 (IRF-1), a positive transcription factor for expression of the beta-interferon (IFN-beta) gene. Using a clone of M1 cells inducible for terminal differentiation by both interleukin 6 (IL-6) and leukemia inhibitory factor (LIF), two multifunctional cytokines recently identified as physiological inducers of hemopoietic cell differentiation, it has been shown that IRF-1 expression is rapidly induced by IL-6 and LIF in the absence of protein synthesis and is followed by a later increase in the levels of IFN-beta mRNA, observed to be largely dependent on protein synthesis. Also, it is shown that the growth inhibition associated with IL-6 or LIF induced terminal differentiation could be partially abrogated via the use of IRF-1 antisense oligomers or IFN-beta antiserum. Taken together, these findings imply a regulatory cascade, where induction of terminal myeloid differentiation by IL-6 or LIF triggers the immediate early activation of IRF-1, leading to the later induction of IFN-beta, in turn playing an autocrine role in growth inhibition.
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Tulp OL, Abdollahi A, Stevens C, Schnitzer-Polokoff R. The effects of the intestinal glucosidase inhibitor acarbose on cholesterogenesis in corpulent rats. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY. A, COMPARATIVE PHYSIOLOGY 1991; 100:763-8. [PMID: 1685984 DOI: 10.1016/0300-9629(91)90405-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
1. Groups of lean and obese LA/N-cp and obese Type II diabetic SHR/N-cp rats were fed semisynthetic diets with or without the alpha-glucosidase inhibitor acarbose (ACB, 100 mg/kg diet, p.o.) from 8 until 15 weeks of age, and measures of fasting serum total cholesterol (TC), insulin (INS), and hepatic HMG-CoA synthase activity determined at the end of the study. 2. ACB was without marked effect on mean food intake in either strain or either phenotype, and resulted in less weight gain and decreased adipose mass in obese LA/N-cp rats. INS was greater in the obese than the lean phenotype of both strains, and ACB resulted in greater reductions in INS in obese LA/N-cp than in obese LA/N-cp rats. 3. Serum TC concentrations were greater in the obese than in the lean phenotype of both strains, and ACB resulted in decreases in TC in both strains and in lower beta:alpha lipoprotein cholesterol ratios in obese LA/N-cp rats. Liver HMG Co-A synthase activity was greater in lean than obese rats and ACB resulted in normalization of enzyme activity in obese LA/N-cp but not SHR/N-cp rats. 4. These results confirm the hypercholesterolemia which occurs in the obese phenotype of the corpulent rat strains, and indicates that ACB may bring about significant reductions in body weight and fatness, TC, and in improved beta:alpha lipoprotein ratios and HMG-CoA synthase activity in obesity.(ABSTRACT TRUNCATED AT 250 WORDS)
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Abdollahi A, Lord KA, Hoffman-Liebermann B, Liebermann DA. Sequence and expression of a cDNA encoding MyD118: a novel myeloid differentiation primary response gene induced by multiple cytokines. Oncogene 1991; 6:165-7. [PMID: 1899477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
We report here the full length cDNA sequence and the deduced amino acid sequence of MyD118, a novel myeloid differentiation primary response gene transiently expressed in M1D+ myeloid precursors following induction of terminal differentiation and growth arrest by IL6. MyD118 expression was observed to be induced also in the absence of protein synthesis, following stimulation of M1D+ cells by IL1, LPS and Leukemia Inhibitory Factor (LIF). Detectable levels of MyD118 RNA were observed in myeloid precursor enriched murine bone marrow, but not in several other nonmyeloid murine tissues.
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Schnitzer-Polokoff R, Margetin C, Abdollahi A, Tulp O. Effects of phenotype, sex, and diet on plasma lipids in LA/N-cp rats. PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE. SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE (NEW YORK, N.Y.) 1989; 191:326-31. [PMID: 2771959 DOI: 10.3181/00379727-191-42927] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The LA/N-corpulent (cp) rat is a recently developed congenic strain which exhibits obesity. The effects of phenotype and sex on serum and lipoprotein lipid content were examined in LA/N-cp rats fed either a control or an atherogenic diet high in saturated fat and protein. Obese rats were pair-fed to equivalent lean animals. Results from this study indicate that sex, phenotype, and diet exert significant effects on plasma and lipoprotein cholesterol content. Plasma cholesterol levels were higher in obese compared with lean rats, females than in males, and rats consuming the atherogenic diet compared with the control diet. Plasma and lipoprotein triglyceride levels were significantly increased only in obese compared with lean animals. The increased plasma cholesterol and triglyceride was observed primarily in the chylomicron and very low density lipoprotein fractions. Increased levels of plasma cholesterol were not a result of increased dietary cholesterol absorption or increased liver cholesterol biosynthesis. These data suggest that LA/N-cp rats can serve as a unique rodent model for the study of the interrelationships between hyperlipidemia, obesity, and coronary heart disease.
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Gealt MA, Abdollahi A, Evans JL. Lipids and lipoidal mycotoxins of fungi. CURRENT TOPICS IN MEDICAL MYCOLOGY 1989; 3:218-47. [PMID: 2688917 DOI: 10.1007/978-1-4612-3624-5_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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