CHUNG, SOONKYU, Ph. D. Mechanisms by Which Conjugated ...

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Figure 3. 3. Trans-10, cis-12 CLA increases TNF-α and IL-6 gene expression. A: Differentiated cultures of human adipocytes were treated with BSA vehicle or 30 µM trans-10, cis-12 CLA (CLA) for the indicated times (0-24 h). mRNA levels of TNF-α and IL-6 were analyzed using semi-quantitative RT-PCR. B: Cultures were treated with BSA (B), 30 µM cis-9, trans-11 CLA (9), or 30 µM trans-10, cis-12 CLA (10) for 3 h. TNF-α (100 ng/ml) treatment for 30 min was used as a positive control. mRNA levels of TNF-α and IL-6 were examined using semi-quantitative RT-PCR. Results shown are representative of three (A) or four (B) separate experiments from independent human subjects. 75
Figure 3. 4. Trans-10, cis-12 CLA activates NFκB. A: Differentiated cultures of human adipocytes were treated with BSA vehicle or 30 µM trans-10, cis-12 CLA (CLA) for 0, 1, 3, 6, 12, or 24 h and the abundance of IκB was determined using immunoblotting. B: Cultures were treated with BSA, 30 µM cis-9, trans-11 CLA (9), or 30 µM trans-10, cis-12 CLA (10) for 3 h and IκBα, p-IκBα, IκBβ, p-ERK1/2, actin levels were analyzed <strong>by</strong> immunoblotting. 100 ng/ml TNF-α for 30 min was used as a positive control. C: Cultures were treated BSA or 30 µM trans-10, cis-12 CLA (CLA) for 2 h and immunostained with p-IKK (Ser177/180, Ser177/181). Active IKK was then detected using immunofluorescence microscopy. D: Cultures were treated with BSA or 30 µM trans-10, cis-12 CLA for 3 h and nuclear extracts were used for detecting binding affinity of NFκB families to the κB response element consensus oligonucleotide on 96 well plates (Trans-AM NFκB kit). Means (+ S.E.; n=2) not sharing a common superscript differ (p
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CHUNG, SOONKYU, Ph. D. Mechanisms b
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MECHANISMS BY WHICH CONJUGATED LINO
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APPROVAL PAGE This Dissertation has
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I also would like to thank The Univ
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IV. PREADIPOCYTES MEDIATE LPS-INDUC
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LIST OF FIGURES ix Page Figure 1.1.
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Figure 4.7. LPS-induced NFκB activ
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in animals and some humans (reviewe
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CLA is potentially effective in: 1)
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Anti-adipogenic Mechanisms of CLA T
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2005). Chapter II of this dissertat
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Figure 1. 2. Multiple mechanisms by
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In contrast, studies conducted in a
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activation. Similarly, Chen et al.
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Central Hypothesis and Specific Obj
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CHAPTER II TRANS-10, CIS-12 CLA INC
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of MEK/ERK signaling by trans-10, c
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Materials and Methods Materials All
Page 37 and 38: the cultures for additional 12 h. A
Page 39 and 40: precipitated with ethanol, dried, a
Page 41 and 42: or for 30 min with 10 µM isoproter
Page 43 and 44: either 30 µM cis-9, trans-11 CLA o
Page 45 and 46: dependent effects of CLA on the pho
Page 47 and 48: Rapamycin Blocks CLA’s Increase i
Page 49 and 50: Figure 2. 2. Trans-10, cis-12 CLA a
Page 51 and 52: Figure 2. 4. Trans-10, cis-12 CLA a
Page 53 and 54: Figure 2. 6. Trans-10, cis-12 CLA i
Page 55 and 56: Figure 2. 8. Trans-10, cis-12 CLA-i
Page 57 and 58: Discussion Feeding mixed CLA isomer
Page 59 and 60: in lipolysis may occur via an ERK-d
Page 61 and 62: espectively, by the MEK inhibitor U
Page 63 and 64: Furthermore, the CLA-mediated incre
Page 65 and 66: proteins. Inhibition of NFκB activ
Page 67 and 68: Sopasakis et al. 2004) and insulin
Page 69 and 70: antibodies for anti-glyceraldehydre
Page 71 and 72: pM of human insulin in the presence
Page 73 and 74: were (accession #NM000600) sense (5
Page 75 and 76: Transfection efficiency was examine
Page 77 and 78: treatment (Brown et al. 2004), we d
Page 79 and 80: myotubes (Sinha et al. 2004; Weiger
Page 81 and 82: controls was found in cytosol (Fig
Page 83 and 84: Depletion of NFκB p65 by RNAi Atte
Page 85 and 86: eports of cytokine-mediated insulin
Page 87: Figure 3. 2. Trans-10, cis-12 CLA i
Page 91 and 92: Figure 3. 6. Trans-10, cis-12 CLA-i
Page 93 and 94: Figure 3. 8. Specific depletion of
Page 95 and 96: Figure 3. 10. Working model: Trans-
Page 97 and 98: Based on our working model (Fig 3.1
Page 99 and 100: mRNA levels of TNF-α (Fig. 3). How
Page 101 and 102: humans (Riserus et al. 2004a), and
Page 103 and 104: most likely not impairing the diffe
Page 105 and 106: 1) decreased adipogenic gene expres
Page 107 and 108: adipocytes from WAT in inflammation
Page 109 and 110: differentiation, cultures of SV cel
Page 111 and 112: Immunoblotting and 4MUrea-SDS-PAGE
Page 113 and 114: activity was measured using the Dua
Page 115 and 116: macrophages and myocytes, respectiv
Page 117 and 118: cultures, insulin’s stimulation o
Page 119 and 120: AD90 cultures treated with LPS. Con
Page 121 and 122: Table 4.1. List of human-gene speci
Page 123 and 124: Figure 4.2. Primary cultures of new
Page 125 and 126: Figure 4.4 LPS induction of cytokin
Page 127 and 128: Figure 4. 6. LPS suppresses PPARγ
Page 129 and 130: Figure 4. 8. Inhibitors of NFκB at
Page 131 and 132: Discussion Adipose tissue is a sour
Page 133 and 134: To determine if non-adipocytes othe
Page 135 and 136: attenuation of insulin sensitivity
Page 137 and 138: epression of NFκB target gene expr
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EPILOGUE The “Obesity epidemic’
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Apart from our initial goal for thi
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Concerning membrane specific recept
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esearch topic I would like to exami
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Berg, A.H., Lin, Y., Lisanti, M.P.,
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Chen, C., Koh, A.J., Datta, N.S., Z
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Diradourian, C., Girard, J., and Pe
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Granlund, L., Juvet, L.K., Pedersen
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Imamura, M., Inoguchi, T., Ikuyama,
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Loscher, C.E., Draper, E., Leavy, O
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Piper, R.C., Hess, L.J., and James,
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Sinha, S., Perdomo, G., Brown, N.F.
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Vanden Berghe, W., Vermeulen, L., D
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