THE UNIVERSITY OF MANITOBA STUDIES ON OVINE PLACINTAL ...

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4 .9oì.' ) E¡ o { ; o ]- æ,lzt¡¡ (, z o(, -JÀ o 176 DAYS <strong>OF</strong> GESTAII<strong>ON</strong> Figure 30. opl concentrations in placentomes at varlous stages of pregnancy' The number above each bar indicates the number of anlmars studled. The vertica' line indicates t sD. Maternar carunc.re extracts (shaded bars), fetal membrane extracts (hatched bars), placentome extracts (combined maternal and fetal) (open bars).
l. Súrglcat Method 't77 Figure 3l shows the half_tinre dlsappearance rate of opL from maternar prasma after surgical removar of the uterus . The half-time disappearance rate of opL calculated from the three ewes {s approx.imate'ly 50 to 57 minutes. 2. Injection Method The harf-time disappearance rate of radio-iodJnated opl (1251-opl-) from the circulation of pregnant ewes is shown in Figure 32. A biphasic exponential curve was obtained by plotting the ìogarithm of the radioactivlty in the TCA -preci pi tabl e material against, time. Two estimates for half_time of the decay of radioactivlty were denoted t+(S) and tå(L), the values of which were r.3 to r.7 minutes and 50 to 65 mrnutes respecti vely. The harf-time disappearance rates of opL carcurated from the samples of whoìe b100d did not differ markedry from the varues obtained from the TCA-prec i pi tabl e materia'l The ratio of the radioacilvlty found in various organs to that of blood samples taken from aninals whÍch were killed at 4 h is sunmarized in Table vII. At 4 h the organ to bìood ratro found for a' tlssues remained below 1.0 wlth exceptlon of kidney whlch has a ratïo of l0 or more. This study suggests that the kidney may be degradation , site for opl in the sheep.
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THE UNIVERSITY OF MANITOBA STUDIES
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To My parents and wife: Mn & Mrs. K
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CONTTNT S I. REVIEW 0N PLACENTAL PR
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V. RESULTS E. STUDIES ON THT BIOSYN
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Peptide Hormones: ACTH CG FSH GH LH
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LIST OF FIGURES FIGURE PAGE I Linea
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22 Radioreceptor assay for oPRL us.
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Effect of PGF,. and lactogenic horm
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ABSTRACT STUDIES 0N 0VINE PLACENTAL
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eceptor-b i nd i ng studies show th
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-2- years have seen an increasing i
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-4- secretion of a peptide hor:none
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NHt-Aì a-Pro-Asp-Val -Gl n-Asp-Cys
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6a NH, -Ser-Lys -G'l u.Pro -Leu -Ar
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-8- 197J-; Rayford et al | !9721 .
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-10- sialic acid díd not alter the
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-L2- and Biasucci (1969) denonstrat
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_14_ addition of CAMP (Handwerger e
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-16- conponents I the.faster haying
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_18_ by hcc, as evidenced by increa
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_20- (Mason et a1 , L973i Menon ¡
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21a NH, -Vaì -G1 n-Thr-Val -Pro-Le
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-23- growth-promoting ef,fect, wher
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-25- diffusion teÊt. Josi¡novich
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-27- v¡hereas in the tissue extrac
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-29- found products of molecular we
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-3r- vÍii) S.ecreLion and metabol
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- 33 - metabolic factors may influe
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-35- Although hpI, si¡nuLates the
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-37- C. CIIHER ITUMAN PLACENTAL PEP
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_39_ stimulating activityf is found
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-4t-- (iii) Human Chorionic Cortlco
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- 43 - syncytiotrophoblast (Tatarin
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- 45 - Ib SUBPRTMATE PLACENTAT PR.O
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-47 - samples, signif,icant elevati
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-49- required for the chorignÍc ao
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B. (i) -51 - MONI(ET PLACENTAL I,AC
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- 53 - brith 13 minutes for hpl,. T
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55 Pregnarit Marê Sêrum Gonâdót
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II b. NON - pRl¡late PT,ACENTAT.
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(iv¡ Inmuhologicat Mêthogs: - 59-
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_ 6t_ 1974; Fellows et a1, 1974¡ H
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63 Ordêr Rodêhtia (Tat, nicê, ro
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Guinea Pi g: 65 Hypophysectomy of t
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-67 Orilet Perissodactyla (Horse an
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-69 activity in the N-acetyl-lactos
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(Íi) coat: -71 The goat is a spont
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- 73- When serum from a pregnant go
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-75 Gusdon et al (1920)using . haer
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77 (c) Imnunologicaì Properties of
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-79 - SECTION II : OYINE REpROpucTI
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BI which contain' as lvell as the o
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83 ce11s usually contaln either num
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85 non-pregnant values did not diff
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8rl Leaf blank to corect nr.rmberin
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- 89- luteolysis when supesistpessd
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9t SECTION IV¡ MtTttODs AND IIATER
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- 93- (.TCA) solution were added co
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-95 - (ÞPRL' NIH-P-B3) , and all q
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97 buffer, the eluates were pooled,
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Char4ctêf ization Pfocedures l. Ch
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t0t (c) À.nalvticaL .{rod.iu¡n do
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103 B : MFTÍÍOD OF DETECTION AND
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AFsa)¡- ProceiiureS 105 Specific b
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107 ', C : IIEBI{OÐ OF DEVELOPMENT
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109 D. RTNG PREGNôXCY (l) Maternâ
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l1ì (wtlvo'). After the hornogenat
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(4) Tissúe distributiori df radloi
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l'1 5 (2) Procg.ssjnq, gf. incuÞ¡
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1.l7 for 30 min. Then the precipita
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(2) Assav of ìuteo.trgpic effec.t
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EXPERIMENT # TI (7 days after HCG)
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123 to progesterone (l/300 djlution
Page 147 and 148: SECTION V : RESULTS (r) LACTOGEN DU
Page 149 and 150: 127 Fractioñâtión of oPL. from c
Page 151 and 152: 129 Figure 6. carborymethyì(cM,)-c
Page 153 and 154: t 3't óo0 ,oo 800 900 FRACIION r,t
Page 155 and 156: E o ø ô¡ t- z ao É, o '133 .--.
Page 157 and 158: TABLE I TABLE OF PURIFICATION OF OV
Page 159 and 160: 137 Figure lì. A, Poìyacrylamide
Page 161 and 162: Leaf blank to correct nr.rmbering
Page 163 and 164: 14r Anal.vtical Sodi um Dodecyl Sql
Page 165 and 166: o 9 x F- -)- 9 rU I æ -t f () LT'
Page 167 and 168: ¿ o s : t45 Figure 15b. Displaceme
Page 169 and 170: HoR MoNE coNc€NrRArto ln ß/mt )
Page 171 and 172: Tissue used for binding ôtudies Li
Page 173 and 174: Noñ. p..s'ro¡r {N,p.l Pr.eñonr (
Page 175 and 176: ¡( É T 2, \ ¡a.2¡./ir ,..r.¡.
Page 177 and 178: P 80 \ x.. ¡,azrot¡j .1.¿¡i¡ .
Page 179 and 180: o c o U o òs -o c2o ao eÀo o 'o .
Page 181 and 182: F 2 o o o\ ¡¡ig ô 2 Þ 0 (¡ l5e
Page 183 and 184: ! o 't6 l HORMO¡¡ E COr{CENr FAIt
Page 185 and 186: 163 Figure 24 shows the sensltivity
Page 187 and 188: 165 D. STUDIES ON THE SECRETION OF
Page 189 and 190: E .Dc À o - art & 167 Flgure 26. P
Page 191 and 192: lJhen blood samples were taken four
Page 193 and 194: Sheep no. l{6 25í 960 464 5?0 680
Page 195 and 196: 't73 fetal cotylêdons at various d
Page 197: TABLE VI OPI CONCENTRATTON IN FETAL
Page 201 and 202: = >€ ,3 ; I 179 rwt 76-0450 o----
Page 203 and 204: dUrlng PrêOnancy in thè Ewes tBr
Page 205 and 206: ! ñ' l83 NoRMON! C oNCENTßArlO þ
Page 207 and 208: l ol
Page 209 and 210: I I I "+ _t rl \l :- 'i rl -l l87 a
Page 211 and 212: l89 Flgure 37. Percentage ot l2sl-o
Page 213 and 214: 19t column is shown in Figure 3BA.
Page 215 and 216: - 193 3H -couNdro _________SPECtFtC
Page 217 and 218: TABLE IX /- BIOASSAY OF qROIItIfH p
Page 219 and 220: z o 197 Figure 40, Radioreceptor as
Page 221 and 222: 5A L lNl Pgtzq cô-tlzt Pgfl6 + cl
Page 223 and 224: SFCT.IoN II : pl.scussr0N 4d ã 1È
Page 225 and 226: Ch aracteri zati on 203 Analytical
Page 227 and 228: 205 size, corresponding to the mole
Page 229 and 230: 207 the specific binding of oPL to
Page 231 and 232: 209 than with prolactin-like effect
Page 233 and 234: 2t1 the jncrease in oPRL binding si
Page 235 and 236: 213 The resuìts obtained indicate
Page 237 and 238: 215 on the role af PL in the fetus.
Page 239 and 240: Surgi ca1 method- 217 Our studies o
Page 241 and 242: 219 5.Relationships amonq opRL. oGH
Page 243 and 244: 221 The nature of thelarge nolecula
Page 245 and 246: 223 data argue for a close interact
Page 247 and 248: ]. TABLE OF CHEMICAL PROPERTIES GUI
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cor,t coAT (bPL) (cpl) 3. TABLE OF
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À) E 229 Figure 43. The secretion
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231 H. POSSIBLE ROLT OF OVINE PLACE
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233 Our studies on the blnding of o
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235 through its binding to cotpus l
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237 Furthermore, oPL neasurement in
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239 circulationand alìantoic f'lul
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SECTICN IX PUBLICATIONS A) Manuscr
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SECTION X: BIBLIOGRAPHY Abramovich,
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Beas,F., Saìinas, 4., GonzalezrF.,
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247 Brody,S,, and Carlstrom,G.,J.Cl
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249 Crosignanì ,P.G. , Nencioni ,
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25t Friesen,H.G., Endocrinoìogy 76
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253 Grinwich,D.L., M. Hichens, and
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25s Hum, V.G., Knipfel , J.G., and
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?57 Knopp,R,H,, H,J. Ruder,E. Herra
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259 Manku,M.S., and D.F. Horrobin,
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261 , :iir .,.-;;r-,:, Morgan, F.J.
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263 Pierce,G.B., Midþley,A.R. and
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?65 Shepard, T.H.., Gen. Comp. Endo
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267 Tsuruhara,T., Dufau,M.L., Hickm
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