INVESTIGATIONS INTO HYPERLIPIDEMIA AND ITS POSSIBLE ...

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89 Miniature Schnauzers (Group 2) Thirty-one Miniature Schnauzers with serum triglyceride and cholesterol concentrations within their respective reference intervals (Group 2A) and 31 Miniature Schnauzers with hypertriglyceridemia (Group 2B) were also included in the study. Samples from these dogs were selected from a pool of >300 samples from Miniature Schnauzers that were collected as part of several ongoing projects related to hypertriglyceridemia in this breed. Dogs that were included in Group 2 had to have absence of any clinical signs at the time of blood collection and no history of diseases or current use of drugs known to affect lipid metabolism. Miniature Schnauzers in Group 2A had to be 7 years of age or older in order to minimize the possibility of them developing hyperlipidemia in the near future. In addition, for the Miniature Schnauzers with hypertriglyceridemia (Group 2B), serum Spec cPL, glucose, total T4, and free T4 (in cases in which serum total T4 was below the lower limit of the reference interval) concentrations were measured. Based on the historical information for each dog and the results of the tests performed, all hypertriglyceridemic dogs enrolled in this study were diagnosed as having primary idiopathic hypertriglyceridemia of Miniature Schnauzers. Serum cholesterol concentrations were measured in all dogs of Group 2. Owners of dogs in Group 2 had been instructed not to feed their dogs for at least 12 hours before the scheduled blood collection.
90 Blood collection and handling Owners living in relative proximity to the Gastrointestinal Laboratory at Texas A&M University were instructed to schedule an appointment for blood collection at that location. Owners that could not come to Texas A&M for blood collection were each sent a styrofoam box containing ice packs and the material necessary for blood collection, and were asked to schedule an appointment with their veterinarian for blood collection. Ten milliliters of blood were collected from each dog into a red-top tube (with no additive). Immediately after clot formation, the samples were centrifuged and the serum was separated from the clot. Samples not collected at Texas A&M University were sent to the Gastrointestinal Laboratory packed on ice by overnight courier. Serum samples were stored at -80 o C until further use. Questionnaires and consent forms Owners of all dogs were asked to complete a questionnaire for each dog. Questions covered date of birth, sex, body weight, current diet(s), current medications, and current and past health history of the dogs. Questionnaires from all dogs were reviewed to determine whether the dogs fit the inclusion criteria for each group. All owners signed an informed owner consent form. The study protocol was reviewed and approved by the Clinical Research Review Committee at Texas A&M University.
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INVESTIGATIONS INTO HYPERLIPIDEMIA
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INVESTIGATIONS INTO HYPERLIPIDEMIA
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iv was found to be useful for the s
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vi ACKNOWLEDGEMENTS I would like to
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viii TABLE OF CONTENTS Page ABSTRAC
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x LIST OF FIGURES FIGURE Page 1 Cor
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xii FIGURE Page 20 1-dimensional sl
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2 the results of these initial stud
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4 and HDL 1 concentrations and a de
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6 and, in smaller concentrations, L
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8 HDL molecules can be further subd
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10 reach the vasculature, they acqu
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12 Endocrine disease Most commonly,
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14 with varying frequencies in dogs
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16 hypercholesterolemia was found o
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18 Primary hyperlipidemia with hype
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20 Atherosclerosis Although dogs ap
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22 Dietary management Typically, th
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24 therapy when the latter fails to
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26 followed from the 1970s until to
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28 this theory, zymogen granules th
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30 be quite different, especially i
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32 Drugs As in humans, drug-induced
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34 Signalment Dogs of any age, bree
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36 erroneously direct the clinician
Page 51 and 52: 38 of changes over time in serum Sp
Page 53 and 54: 40 they have been shown to have a l
Page 55 and 56: 42 revealed either a normal pancrea
Page 57 and 58: 44 At present, a definitive diagnos
Page 59 and 60: 46 factors should always be investi
Page 61 and 62: 48 associated pancreatitis is much
Page 63 and 64: 50 clear whether hyperlipidemia was
Page 65 and 66: 52 hepatobiliary disease in both Mi
Page 67 and 68: 54 the reference range, while Group
Page 69 and 70: 56 ROC analysis and calculation of
Page 71 and 72: 58 Figure 3. Serum cPLI concentrati
Page 73 and 74: 60 There was no significant differe
Page 75 and 76: 62 severe (typically ≥1,000 mg/dl
Page 77 and 78: 64 gastrointestinal signs or suspec
Page 79 and 80: 66 CHAPTER III SERUM TRIGLYCERIDE C
Page 81 and 82: 68 logical assumption that a defect
Page 83 and 84: 70 pancreatitis. For the same reaso
Page 85 and 86: 72 Spec cPL concentrations were mea
Page 87 and 88: 74 were significantly more likely t
Page 89 and 90: 76 Figure 5. Comparison of serum tr
Page 91 and 92: 78 Figure 7. Comparison of serum tr
Page 93: 80 pancreatitis as it cannot be pre
Page 96 and 97: 83 Although serum cholesterol conce
Page 98 and 99: 85 Footnotes a Spec cPL ® , IDEXX
Page 100 and 101: 87 several subfractions, with diffe
Page 104 and 105: 91 Assays Serum triglyceride (refer
Page 106 and 107: 93 Figure 8. Custom-built fluoresce
Page 108 and 109: 95 range HDL 1 has not been accurat
Page 110 and 111: 97 mg/dL) were significantly higher
Page 112 and 113: 99 Figure 10: Serum cholesterol con
Page 114 and 115: 101 (Eigenvalues=0.5455; P=0.00017;
Page 116 and 117: 103 Figure 12: Representative lipop
Page 118 and 119: 105 Figures 14A and 14B: Representa
Page 120 and 121: 107 Specifically, 97% of non-hypert
Page 122 and 123: 109 The fraction of TRLs was a sign
Page 124 and 125: 111 Schnauzers without hyperlipidem
Page 126 and 127: 113 Footnotes a Roche/Hitachi MODUL
Page 128 and 129: 115 The biochemical, metabolic, and
Page 130 and 131: 117 Study design Each one of the do
Page 132 and 133: 119 Questionnaires and consent form
Page 134 and 135: 121 a target intensity of 30%, and
Page 136 and 137: 123 might affect lipid metabolism (
Page 138 and 139: 125 Figure 16. Serum triglyceride c
Page 140 and 141: 127 Figure 18. Serum Spec cPL conce
Page 142 and 143: 129 Figure 19. 1-dimensional sliced
Page 144 and 145: 131 Dogs that did not respond to th
Page 146 and 147: 133 Hypertriglyceridemia has been l
Page 148 and 149: 135 degrees. One possible explanati
Page 150 and 151: 137 Footnotes a Royal Canin Gastroi
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139 concentrations and lipoprotein
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141 inclusion criteria for the stud
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143 light source j , located in a d
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146 Serum triglyceride and choleste
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148 Figure 22. Serum triglyceride c
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150 Figure 24. 1-dimensional sliced
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152 Discussion The purpose of the p
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154 fraction of these dogs (about 3
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156 of lipoproteins might also have
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158 Footnotes a Roche/Hitachi MODUL
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160 the etiology of pancreatitis, b
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162 times (P=0.0343) for a serum cP
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164 peaks than dogs of other breeds
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166 19.3; 95% CI, 2.0-184.0; P=0.00
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168 4) Specific lipoprotein classes
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170 REFERENCES 1949;8:96-97. 1. Lew
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172 17. Whitney MS, Boon GD, Rebar
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174 33. Ford RB. Clinical managemen
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176 50. Nelson RW, Turnwald GH, Wil
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178 66. Williams DA, Steiner JM. Ca
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180 82. Yilmaz Z, Senturk S. Charac
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182 97. Fojo SS, Stalenhoef AF, Mar
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184 111. Lam CW, Yuen YP, Cheng WF,
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186 127. Crispin SM. Ocular manifes
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188 144. Lindsay S, Entenmann C, Ch
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190 161. Steiner JM. Canine pancrea
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192 176. Steiner JM, Teague SR, Wil
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194 191. Steiner JM. Diagnosis of p
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196 208. Talukdar R, Vege S. Recent
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198 224. Koch K, Drewelow B, Liebe
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200 241. Petrov MS, van Santvoort H
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202 258. Ewald N, Hardt PD, Kloer H
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204 274. Otvos JD, Jeyarajah EJ, Be
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206 289. Carpentier YA, Scruel O. C
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