351
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Smith MS, Ramaley JA. Development of ability to initiate and maintain prolactin surges induced by uterine cervical stimulation in immature rats. Endocrinology 1978; 102:351-7. [PMID: 743961 DOI: 10.1210/endo-102-2-351] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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352
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Harris AR, Smith MS, Alex S, Salhanick HA, Vagenakis AG, Braverman LE. Pyridoxine (B6)-induced inhibition of prolactin release in the female rat. Endocrinology 1978; 102:362-6. [PMID: 105867 DOI: 10.1210/endo-102-2-362] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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353
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Harris AR, Christianson D, Smith MS, Fang SL, Braverman LE, Vagenakis AG. The physiological role of thyrotropin-releasing hormone in the regulation of thyroid-stimulating hormone and prolactin secretion in the rat. J Clin Invest 1978; 61:441-8. [PMID: 413840 PMCID: PMC372555 DOI: 10.1172/jci108955] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The physiological role of thyrotropin-releasing hormone (TRH) in the regulation of thyrotropin (thyroid-stimulating hormone, TSH) and prolactin (Prl) secretion has been assumed but not proven. Stimulation of their release requires pharmacologic doses of TRH. Lesions of the hypothalamus usually induce an inhibition of TSH secretion and an increase in Prl. To determine whether TRH is essential for TSH and Prl secretion in the rat, 0.1 ml of TRH antiserum (TRH-Ab) or normal rabbit serum was administered to normal, thyroidectomized, cold-exposed, and proestrus rats through indwelling atrial catheter. Serum samples were obtained before and at frequent intervals thereafter. Serum TSH concentrations in normal, thyroidectomized, cold-exposed, and proestrus rats were not depressed in specimens obtained up to 24 h after injection of normal rabbit serum. In contrast, serum TSH was significantly decreased after the administration of TRH-Ab in all normal (basal, 41+/-8 muU/ml [mean+/-SE]; 30 min, 6+/-2; 45 min, 8+/-3; 75 min, 4+/-2); thyroidectomized (basal, 642+/-32 muU/ml; 30 min, 418+/-32; 60 min, 426+/-36; 120 min, 516+/-146); coldstressed (basal, 68+/-19 muU/ml; 30 min, 4+/-3; 180 min, 16+/-8); and proestrus (basal, 11 a.m., 57+/-10 muU/ml; 1 p.m., 20+/-3; 3 p.m., 13+/-4; 5 p.m., 19+/-3) rats. However, 0.1 ml of TRH-Ab had no effect on basal Prl concentrations in normal or thyroidectomized rats and did not prevent the Prl rise in rats exposed to cold (basal, 68+/-7 ng/ml; 15 min, 387+/-121; 30 min, 212+/-132; 60 min, 154+/-114), or the Prl surge observed on the afternoon of proestrus (basal 11 a.m., 23+/-2 ng/ml; 1 p.m., 189+/-55; 3 p.m., 1,490+/-260; 5 p.m., 1,570+/-286). These studies demonstrate that TRH is required for TSH secretion in the normal, cold-exposed and proestrus rat and contributes, at least in part, to TSH secretion in the hypothyroid rat, but is not required for Prl secretion in these states.
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354
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Smith MS. A comparison of pituitary responsiveness to luteinizing hormone-releasing hormone during lactation and the estrous cycle of the rat. Endocrinology 1978; 102:114-20. [PMID: 369817 DOI: 10.1210/endo-102-1-114] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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355
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Smith MS. Hypothalamic-pituitary responsiveness during lactation in the rat: estrogen-induced luteinizing hormone surges. Endocrinology 1978; 102:121-7. [PMID: 743942 DOI: 10.1210/endo-102-1-121] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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356
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Smith MS, Neill JD. Inhibition of gonadotropin secretion during lactation in the rat: relative contribution of suckling and ovarian steroids. Biol Reprod 1977; 17:255-61. [PMID: 889995 DOI: 10.1095/biolreprod17.2.255] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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357
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Bartke A, Smith MS, Michael SD, Peron FG, Dalterio S. Effects of experimentally-induced chronic hyperprolactinemia on testosterone and gonadotropin levels in male rats and mice. Endocrinology 1977; 100:182-6. [PMID: 830537 DOI: 10.1210/endo-100-1-182] [Citation(s) in RCA: 114] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
We have examined testicular and pituitary function in inbred CD-F rats and DBA/2J mice with chronic hyperprolactinemia induced by grafting 4 anterior pituitaries from adult females of the same strain under the kidney capsule. Eight rats were given pituitary isografts and 9 were sham-operated; blood samples were collected at 4-7 week intervals, and the animals were killed 6 months later. One month after surgery, PRL levels in grafted rats were elevated (348 +/- 15 vs. 94 +/- 11 ng/ml; P less than 0.001), LH levels were depressed (16 +/- 3 vs. 59 +/- 9 ng/ml; P less than 0.001), but T levels were not affected (1.0 +/- 0.1 vs. 1.1 +/- 0.2 ng/ml). The elevated PRL levels in grafted animals did not decline during the subsequent 5 months, while LH levels increased slightly, and T levels remained indistinguishable from those in the controls. At the time of autopsy, FSH levels were reduced in grafted rats (230 +/- 40 vs. 501 +/- 108 ng/ml; P less than 0.05). Multiple pituitary isografts did not affect the weight of the testes or the ventral prostate, but increased the weight of the seminal vesicles (P less than 0.001). In 11 mice examined 5.5 months after receiving pituitary isografts, plasma PRL levels were dramatically elevated (330 +/- 35 vs. 27 +/- 2 ng/ml; P less than 0.001), but plasma T levels and testicular weight were not different from those observed in 12 sham-operated controls. The weight of the seminal vesicles in grafted mice was increased (P less than 0.01). In both rats and mice, chronic hyperprolactinemia did not affect plasma testosterone levels or testes weight and increased seminal vesicle weight.
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358
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Abstract
The luteotropic stimuli necessary to transform the corpus luteum of the estrous cycle into a corpus luteum of psuedopregnancy on the morning of diestrus-2 (Day 2), as reflected by a dramatic divergence in progesterone secretion, were studied (Day 1 was taken as the first day of diestrus of pseudopregnancy). The requirement of prolactin (PRL) as a luteotropic stimulus was determined by inhibiting the diurnal and nocturnal PRL surges that occur immediately before and during the divergence in progesterone. Following cervical stimulation, 1 mg of 2-Br-alpha-ergocryptine (EC) was injected at 1100 and 2300 h on Day 1 (lights on 0600-1800 h), and the animals were decapitated at 2-4 h intervals from 1100 h on Day 1 to 1700 h on Day 2. In the control animals, the PRL surges on Day 1 and Day 2 were associated with an increase in progesterone secretion on Day 2. However, the regimen of EC treatment resulted in an inhibition of PRL surges, prolactin remaining at baseline values from 1100 h on Day 1 to 1700 h on Day 2. The inhibition of PRL secretion was associated with a fall in progesterone concentration to reach baseline values by 1700h on Day 2. Furthermore, a group of animals similarly treated with EC returned to vaginal estrus 2 days later. LH concentrations did not differ in control and EC-treated animals. The effect of EC on corpus luteum function could be completely reversed by the simultaneous administration of PRL. In addition, if PRL was administered at 1100 h and 2300 h on diestrus-1 of the estrous cycle, in an attempt to mimic the surges os pseudopregnancy, regression of the corpora lutea did not occur. Progesterone levels increased to reach values comparable to those observed in pseudopregnancy on diestrus-2. The role of LH was studied by administering a dose of LH antiserum at 110 and 2300 h on Day 1 of pseudopregnancy. This treatment failed to inhibit the increase in progesterone observed on Day 2. These results demonstrate that the surges of plasma PRL initiated by cervical stimulation are responsible for transforming a corpus luteum of the estrous cycle into a corpus luteum of pseudopregnancy, as reflected by an increase in progesterone secretion of Day 2. LH seems to have a minor role in maintaining corpus luteum function beyond that observed during the estrous cycle.
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359
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Smith MS, Neill JD. Termination at midpregnancy of the two daily surges of plasma prolactin initiated by mating in the rat. Endocrinology 1976; 98:696-701. [PMID: 944123 DOI: 10.1210/endo-98-3-696] [Citation(s) in RCA: 103] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The pattern of plasma prolactin following uterine cervical stimulation consists of two surges each day, one nocturnal, occurring between 0100-0900 h (lights on 0600-1800 h), and one diurnal, occurring between 1500-2100 h. This pattern of prolactin continued throughout pseudopregnancy; the last surge was observed on the morning of day 11 (day 1 was taken as the first day of diestrus of pregnancy or pseudopregnancy). Prolactin levels remained low thereafter until the spontaneous proestrous surge on the afternoon of day 12, signalling the onset of a new estrous cycle. In contrast, the two daily prolactin surges did not continue throughout pregnancy, and in fact, were terminated sooner in pregnant animals than in pseudopregnant animals. The last diurnal surge was observed on day 8 while the last nocturnal surge was observed on day 10. The early termination of prolactin surges during pregnancy correlated with the increased secretion of rat placental lactogen. However, placental extracts obtained from day 11 of pregnancy and injected in large doses failed to inhibit prolactin surges in pseudopregnant animals. Prolactin surges also continued for a longer period of time in pseudopregnant rats bearing decidualized uteri than in pregnant animals. Thus, the two major components of pregnancy that differed from pseudopregnancy, that is, the presence of rat placental lactogen or decidual tissue, did not appear to account for the early termination of prolactin surges during pregnancy.
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360
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Smith MS. Letter: Dorisflexor babinski. Ann Intern Med 1976; 84:223-4. [PMID: 1082733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
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361
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Perkel DH, Smith MS. A computer program for simulating a network of interacting neurons. II. Programming aspects. COMPUTERS AND BIOMEDICAL RESEARCH, AN INTERNATIONAL JOURNAL 1976; 9:45-66. [PMID: 175999 DOI: 10.1016/0010-4809(76)90050-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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362
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Abstract
To investigate the role of ovarian steroids in the initiation and maintenance of the prolactin surges typical of pseudopregnancy in the rat, the pattern of plasma prolactin concentrations resulting from cervical stimulation of long-term ovariectomized rats was determined. Cervical stimulation of rats, ovariectomized 2-4 weeks previously, at 1900 h (lights on 0600-1800 h) resulted in a surge of prolactin which was initiated 4-6 h later and which was similar in timing and duration to the nocturnal prolactin surge of intact, pseudopregnant rats. Daily prolactin surges continued for 6 days but declined thereafter. Because plasma progesterone levels were elevated significantly after cervical stimulation, the experiment was repeated iin adrenalectomized-ovariectomized rats. Prolactin surges were still observed, demonstrating that ovarian and adrenal steroids are required neither for initiation nor maintenance of prolactin surges after cervical stimulation. Cervical stimulation at different times of the day (1900 h, 2400 h or 0400 h) always resulted in a surge of prolactin which peaked at 0300-0700 h. The latency from cervical stimulation in the peak of the prolactin surge was 8 h for the 1900 h group, 5 h for the 2400 h group, and 3 h for the 0400 h group. Thus, the appearance of prolactin surges is related to the time of day rather than to the time cervical stimulation is applied, demonstrating the existence of a "critical period" for cervically-induced prolactin release.
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363
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Perkel DH, Gerstein GL, Smith MS, Tatton WG. Nerve-impulse patterns: a quantitative display technique for three neurons. Brain Res 1975; 100:271-96. [PMID: 1192179 DOI: 10.1016/0006-8993(75)90483-7] [Citation(s) in RCA: 114] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A scatter diagram is described that displays the relative timings of nerve impulses in 3 simultaneously monitored neurons. The technique is a generalization of the cross-correlation histogram for two impulse trains. The time intervals between impulses in different neurons are plotted on triangular coordinates to yield a Joint Impulse Configuration Scatter Diagram. The resulting 'snowflake' plot shows a pattern of spots and lines, which is interpretable in terms of the functional circuitry among teh neurons. Illustrations are given of the snowflakes produced by a variety of three-neuron circuits, which may serve as a preliminary catalog of snowflake types for interpretation of experimental data.
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364
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Smith MS, Macourt DC. An introductory course in human sexuality for medical students. Med J Aust 1975; 2:525-7. [PMID: 1196203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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365
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Rodriguez-Castellon JA, Robinson CA, Smith MS, Frye JH. Evaluation of an automated glucose-oxidase procedure. Clin Chem 1975; 21:1513-4. [PMID: 1157324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
We evaluated a slight modification of the automated oxidase/peroxidase method for glucose determination in blood with use of 4-aminophenazone [J. Clin. Pathol. 22, 246 (1969)]. Nonsugar reducing substances did not interfere, except for ascorbic acid in very high concentrations. Lipemic sera gave slightly lower values. Values for reproducibility, specificity, and sensitivity were closer to such values for the hexokinase method than was the case for some other commonly used methods.
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366
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Smith MS. Proceedings: the breeding cycle of the Weddell seal (Leptonychotes weddelli)at Mcmurdo sound, Antarctica. JOURNAL OF REPRODUCTION AND FERTILITY 1975; 43:376-7. [PMID: 1127661 DOI: 10.1530/jrf.0.0430376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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367
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Stanton JH, Smith MS. Proceedings: uptake of ferritin and carbon by the mouse uterus. JOURNAL OF REPRODUCTION AND FERTILITY 1975; 43:394-5. [PMID: 1127671 DOI: 10.1530/jrf.0.0430394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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368
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Smith MS, Freeman ME, Neill JD. The control of progesterone secretion during the estrous cycle and early pseudopregnancy in the rat: prolactin, gonadotropin and steroid levels associated with rescue of the corpus luteum of pseudopregnancy. Endocrinology 1975; 96:219-26. [PMID: 1167352 DOI: 10.1210/endo-96-1-219] [Citation(s) in RCA: 783] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The hormonal factors associated with converting a corpus luteum of estrous cycle into a corpus luteum of pseudopregnancy were studied by measuring LH and FSH prolactin, estradiol and progesterone levels in decapitated rats during the 4-day estrous cycle and a comparable time of pseudopregnancy (lights on 0600-0800 hr.). During the estrous cycle, prolactin, LH and FSH remained low and unchanging except on the afternoon of proestrus, when typical proestrous surges were observed. In contrast, estradiol levels began to increase on D-1, from baseline values of 7 pg/ml to approximately 15-20 pg/ml. These levels were maintained until the afternoon of D-2 when estradiol further increased to reach peak levels of 40-50 pg/ml by 0900 hr on proestrus. Estradiol then declined in relation to the increase in LH secreation and had returned to baseline by estrus. Progesterone secretion by the corpora lutea of the cycle also increased on the afternoon of D-1 and reached a maximum value of 25-30 ng/ml early on the morning of D-2. At this time, a precipitious fall in progesterone occurred, returning to baseline values of 5-1- ng/ml by 0700 on D-2 signifying the regression of the corpora lutea of the cycle. Progesterone remained low thereafter until the afternoon of proestrus when levels increased in response to the proestrus when levels increased in response to the proestrous surge of LH. Following cervical stimulation at 1900 hr on proestrus, no differences were noted, with respect to the estrous cycle, in LH, FSH or estradiol secreation through the afternoon of D-2. Surprisingly, progesterone levels did not differ in the cycle and pseudopregnancy until the early morning of D-29 instead of progesterone levels falling to baseline as they had during the cycle, the corpora lutea of pseudopregnancy were rescused, progesterone increasing dramatically to reach levels of 45-50 ng/ml by 1700 hr on that same day. The only difference in hormone secretion that was noted which could account for this marked divergence in progesterone secretion was the pattern of prolactin secretion following cervical stimulation. In contrast to the low levels seen during the estrous cycle, biphasio surges of prolactin secretion occured each day, one being nocturnal (0100-0900 hr) and the other diurnal (1500-2100 hr). The rescue of the corpus luteum occured in association with the nocturnal surge on D-2. These results suggest that nocturnal surge on D-2, PROLACTIN IS THE MAJOR Luteotropic stimulus which transforms and estrous cycle into pseudopregnancy by prolonging progesterone secretion from the corpus luteum. Moreover, if LH is important for progesterone secretion, no changes were observed in the pattern of LH secretion which can account for the rescue of the corpus luteum.
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369
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Freeman ME, Smith MS, Nazian SJ, Neill JD. Ovarian and hypothalamic control of the daily surges of prolactin secretion during pseudopregnancy in the rat. Endocrinology 1974; 94:875-82. [PMID: 4813686 DOI: 10.1210/endo-94-3-875] [Citation(s) in RCA: 111] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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370
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Smith MS, Hartman S. Proceedings: Sarcoma cells as a blastocyst analogue in the mouse uterus. JOURNAL OF REPRODUCTION AND FERTILITY 1974; 36:465. [PMID: 4819340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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371
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Smith MS, McDonald LE. Serum levels of luteinizing hormone and progesterone during the estrous cycle, pseudopregnancy and pregnancy in the dog. Endocrinology 1974; 94:404-12. [PMID: 4810379 DOI: 10.1210/endo-94-2-404] [Citation(s) in RCA: 82] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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372
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Meyrick EA, Smith MS. Electon microscopy in the rapid screening of sera for the presence of H.A.A. (hepatitis associated antigen). MEDICAL LABORATORY TECHNOLOGY 1973; 30:391-4. [PMID: 4612315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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373
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374
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Smith MS. Changes in distribution of alkaline phosphatase during early implantation and development of the mouse. AUSTRALIAN JOURNAL OF BIOLOGICAL SCIENCES 1973; 26:209-17. [PMID: 4734121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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375
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Smith MS. Men's Liberation: The Oppression of Masculine Instincts In Western Society. CANADIAN FAMILY PHYSICIAN MEDECIN DE FAMILLE CANADIEN 1972; 18:51-52. [PMID: 20468740 PMCID: PMC2370484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
North American society tends to cause the male to repress his natural physical aggression to the point where he feels anger towards females because of their ability to make him feel unsure of himself. Dr. Smith describes this process and some of its attendant complications, showing how conditioning finally leads to poor communication between husband and wife, usually causing the wife to seek a doctor's help for her own unresponsiveness.
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376
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Lipner H, Smith MS. A method for determining the distribution and source of protein in preovulatory rat ovaries. J Endocrinol 1971; 50:187-200. [PMID: 5090081 DOI: 10.1677/joe.0.0500187] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
SUMMARY
The distribution and source of protein in the fluid compartments of tissues may be determined by the use of [14C]sucrose to determine the volume of the fluid compartments and 125I-labelled serum albumin ([125I]SA) to determine the distribution volume of the labelled protein. The amount of tissue protein in the ovary, the amount of protein derived from plasma, the rate of plasma protein influx into the ovary and the amount of newly synthesized protein were calculated.
Immature female rats were treated with pregnant mare serum gonadotrophin (PMS)when 24 days old and were given human chorionic gonadotrophin (HCG) 42 h later. The rats were given [14C]sucrose or [125I]SA and measurements were made. Ovaries and blood were collected 0, 3, 5, 8 and 10 h after HCG administration. At all intervals the dry weight represented 14% and water 86% of the weight of the ovary. The extracellular space increased until 8 h and then both it and the intracellular space increased. At 0 h plasma protein accounted for 17% of the total proteins. At 10 h the ovarian weight had increased by 50% to 100% of the value at 0 h and the total protein by 45% of the value at 0 h with plasma protein accounting for 27% of the total proteins, and newly synthesized protein for 16%. The increase in plasma protein was linear and accumulated at the rate of 15%/h. By this method no entrance of plasma protein into the intracellular space could be demonstrated. Newly synthesized protein appeared only after 5 h and probably represents the growth of a new crop of follicles.
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377
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Smith MS, Wilson IB. Histochemical observations on early implantation in the mouse. JOURNAL OF EMBRYOLOGY AND EXPERIMENTAL MORPHOLOGY 1971; 25:165-74. [PMID: 5088017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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378
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Smith MS. Development of sexual maturity. CANADIAN FAMILY PHYSICIAN MEDECIN DE FAMILLE CANADIEN 1971; 17:57-60. [PMID: 20468631 PMCID: PMC2370221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Before we can adequately treat the effects of sexual immaturity, we have to have a clear idea why the patient has not matured. Various sociological pressures give rise to an arresting of emotional drives and these pressures can often be removed by gentle reassurance. Many adolescents develop problems because they do not understand the physiology of maturation - for instance, boys believe girls to be as physically motivated as they are, while girls believe that boys have their depth of emotional commitment.
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379
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Deering RA, Smith MS, Thompson BK, Adolf AC. Gamma-ray-resistant and -sensitive strains of slime mold (Dictyostelium discoideum). Radiat Res 1970; 43:711-28. [PMID: 5466867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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380
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Potts DM, Wilson IB, Smith MS. Observations on rat eggs transplanted to the mouse uterus. JOURNAL OF REPRODUCTION AND FERTILITY 1970; 22:425-8. [PMID: 5453374 DOI: 10.1530/jrf.0.0220425] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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381
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Smith MS. Histochemical observations on the mouse uterus during the oestrous cycle. JOURNAL OF REPRODUCTION AND FERTILITY 1970; 22:461-7. [PMID: 5465735 DOI: 10.1530/jrf.0.0220461] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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382
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Crisp WE, Smith MS, Asadourian LA, Warrenburg CB. Cryosurgical treatment of premalignant disease of the uterine cervix. Am J Obstet Gynecol 1970; 107:737-42. [PMID: 5426228 DOI: 10.1016/s0002-9378(16)33992-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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383
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384
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Parker JR, Wouters AG, Smith MS. Physical changes of Wesselsbron virus occurring during attenuation in foetal lamb kidney cells. ARCHIV FUR DIE GESAMTE VIRUSFORSCHUNG 1969; 26:305-20. [PMID: 5782937 DOI: 10.1007/bf01250941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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385
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Wilson IB, Smith MS. Isotopic labelling of the mouse blastocyst. JOURNAL OF REPRODUCTION AND FERTILITY 1968; 16:305-7. [PMID: 5660286 DOI: 10.1530/jrf.0.0160305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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386
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Abstract
SUMMARY
Glycogen synthetase, phosphorylase and glycogen were determined biochemically in the smooth muscle of the rat uterus following a single s.c. injection (10 μg.) of oestradiol dipropionate. The ovariectomized animals were killed 6, 12, 24, 48, 72 and 96 hr. after the hormone treatment. From 12 to 96 hr. glycogen synthetase activity was significantly greater than in the untreated control rats. Phosphorylase activity was significantly less than in the controls at 12 hr. and greater from 48 to 96 hr. After the initial drop, control phosphorylase values were obtained between 24 and 48 hr. From 12 to 96 hr. the glycogen concentration was greater than in the control animals.
The results show that oestrogen increased glycogen synthetase activity in the smooth muscle of the uterus soon after the hormone treatment, and with the increase in enzymic activity the glycogen concentration was also increased. They indicate that, during the early phase of glycogen synthesis, oestrogen stimulates glycogenesis by increasing glycogen synthetase activity and suppresses glycogenolysis by inhibiting phosphorylase activity. The glycogen concentration at later stages did not alter significantly, and this may have been due to the build-up and breakdown of the carbohydrate by the action of glycogen synthetase and phosphorylase, respectively.
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387
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Bo WJ, Smith MS. A histochemical study on the glycogen synthesizing enzyme in the myometrium of the pregnant and pseudopregnant rat. JOURNAL OF REPRODUCTION AND FERTILITY 1966; 12:237-42. [PMID: 5951115 DOI: 10.1530/jrf.0.0120237] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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388
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Bo WJ, Smith MS. The effect of retinol and retinoic acid on the morphology of the rat uterus. Anat Rec (Hoboken) 1966; 156:5-9. [PMID: 5970445 DOI: 10.1002/ar.1091560103] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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389
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Bo WJ, Smith MS. A histochemical and biochemical study of phosphorylase and glycogen synthetase in smooth muscle. Anat Rec (Hoboken) 1965; 153:295-301. [PMID: 5880320 DOI: 10.1002/ar.1091530309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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390
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Dunphy DC, Stone PJ, Smith MS. The general inquirer: further developments in a computer system for content analysis of verbal data in the social sciences. BEHAVIORAL SCIENCE 1965; 10:468-80. [PMID: 5838381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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391
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Brown PR, Ferguson DA, Page KW, Smith MS, Wood JC. The development of dichlofenthion for the control of sheep maggot fly in the United Kingdom. Vet Rec 1965; 77:920-1. [PMID: 5890291 DOI: 10.1136/vr.77.32.920] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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392
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Wood JC, Page KW, Brown PR, Smith MS, Ferguson DA. The use of chlorfenvinphos for the control of sheep maggot fly. Vet Rec 1965; 77:896-9. [PMID: 5828669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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