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  • 1985-1989  (11)
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Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Hyalinizing trabecular adenoma of the thyroid. A report of three cases with immunohistochemical and ultrastructural studies (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Histopathology 15 (1989), S. 0 
    Details
    ISSN: 1365-2559
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: We have studied three examples of benign thyroid tumours which conform to the lesion recently described as hyalinizing trabecular adenoma. The prominent feature of this trabecular epithelial lesion is the extracellular deposition of an eosinophilic material that does not show the features of amyloid; the epithelial cells may be elongated, sometimes radially arranged around the eosinophilic material. All three tumours showed positive immunocytochemical staining for thyroglobulin, keratin, chromogranin and neuron-specific enolase. One tumour showed isolated cells with immunoreactivity for somatostatin, argyrophil cytoplasmic granularity with the Grimelius technique, and ultrastructurally demonstrable cytoplasmic electron-dense endocrine granules. The hyaline extracellular material in all three tumours showed strong immunoreactivity for both type IV collagen and laminin. Previous radiation may be important in the causation of this tumour, and it shows a frequent association with severe thyroiditis. We conclude that the main histological feature of this lesion, the hyaline material, is due to the overproduction of a basement membrane-like material by the neoplastic follicular cells. The presence in one tumour of evidence of endocrine differentiation may reflect the potential for follicular cells to show biphasic differentiation, a feature which may be more frequent than has been previously recognized. Several of the other features of this tumour–-for example the frequent intranuclear cytoplasmic inclusions–-may lead to diagnostic problems, and the entity deserves wider recognition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2559.1989.tb03072.x
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  • 2
    Electronic Resource
    Electronic Resource
    Further studies on the effect of phosphate fertilizer and propyzamide on the growth of white clover slot-seeded into permanent pasture (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 41 (1986), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Assessments were made of the clover yield and clover content between early June and late July 1984 of white clover in a permanent pasture which had been slot-seeded in spring 1982.Past reserves of phosphate or application of propyzamide alone only slightly increased clover dry matter yield but together they increased it from 13 to 785 kg dry matter ha-1 and gave 31% clover in the total herbage yield. Applications of P2O5 during the experiment, alone or together with past reserves of phosphate, Iased clover yield from 13 to 242 kg dry matter ha-1 and the proportion of clover from 1 to 10%. However, highest yields (1282 kg) and clover content (37%) were attained when P2O5 and propyzamide were applied to treatments with past reserves of phosphate.These results confirmed the trends evident during the second year and also indicated a potential role for grass-suppressants in increasing management options during the early years after slot-seeding.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1986.tb01802.x
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  • 3
    Electronic Resource
    Electronic Resource
    Some effect fluid-sowing, pre-germination, irrigation and soil covering on the establishment and growth of seedlings of white clover slot-seeded into permanent pasture (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 41 (1986), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seeds of white clover (Trifolium repens) were sown alone or in fluid, or pre-germinated in fluid on to the soil surface of slots cut in an old Agrostis/Festuca sward. Seeds were left uncovered or covered with a thin layer of soil and irrigated from the outset or after 14 days delay.With irrigation from the outset, seedlings established soonest from pre-germinated seeds but final percentage establishment ranged only from 50 to 63% for the three states of seed. With delayed Irrigation, however, few pre-germinated s1 survived and although germination of dry seed was delayed, final percentage establishment was unaffected. Soil covering increased establishment slightly. The number of leaves per seedling was greatest with pre-germination and early irrigation and least with pre-germination and delayed irrigation. Delayed irrigation also decreased the number of leaves per seedling for seedlings grown from dry seed.The effects of early irrigation persisted so that at 84 days it significantly increased total yield of clover from all three states of seed, on average threefold, but much more from pre-germinated than from dry seed. Soil covering greatly increased yield, especially where irrigation had been applied from the outset. The interaction of early irrigation and soil covering was even more pronounced for stolon weights, and stolon growth of Individual seedlings appeared to benefit more from soil covering than from early irrigation.The results showed the importance of early seedling emergence, but no advantages of fluid sowing per se. They also indicated large overall beneficial effects of early irrigation and its additive interaction with soil covering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1986.tb01799.x
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  • 4
    Electronic Resource
    Electronic Resource
    Growth of white clover in eight grass species and the effects of propyzamide, a grass-suppressing herbicide (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 41 (1986), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seedlings of white clover (cv. Grasslands Huia) were introduced as spaced plants into 3-year-old monoculture plots of eight grass species (Agrostis capillaris, Agrostis stolonifera, Dactylis glomerata, Festuca rubra, Holcus lanatus, Lolium perenne, Phleum pratense and Poa pratensis) during June 1984. In mid-April 1985 plots were split for application of propyzamide at the following concentrations: 0, 0·2, 0·4, 0·6 kg a.i. ha-1.During 1984 differences between clover seedling growth in the different grass species became apparent within 2 weeks; growth was greatest in F. rubra, P. pratensis and H. lanatus and smallest in D. glomerata, L. perenne and P. pratense. During 1985, when more N fertilizer was given, H. lanatus and D. glomerata, were equally competitive and clover contributed only 16–18% of the total herbage yield of 10·4 t ha-1 in them, compared with 33–50% of yields ranging from 9·6 to 119 t ha-1 in the other six species. Propyzamide decreased grass growth in mid-season by more than 50% but there was little overall persistent benefit to clover yield, except for A. stolonifera and P. pratense with 0·4 and 0·6 kg ha-1 treatments. Dactylis glomerata and perenne were least and H. lanatus, F. rubra and P. pratensis most suppressed by the herbicide.Possible reasons for the overall large clover contribution from a very sparse seedling population and the relatively small effects of propyzamide are discussed as well as future work required to improve the predictability of effects of grass suppression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1986.tb01827.x
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  • 5
    Electronic Resource
    Electronic Resource
    Slot-seeding investigations. 4. Effect of phosphate fertilizer and grass suppressant on the establishment and growth of white clover in permanent pasture (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 40 (1985), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: White clover (cv. Grasslands Huia) was slot-seeded in April 1982 into plots of permanent pasture of differing botanical composition and reserves of soil phosphate. In one investigation the short-term effects of placing different amounts of phosphate (P2O5) in different positions in relation to the slot were investigated. In another, emphasis was given to effects of a grass-suppressing herbicide, propyzamide, on herbage growth and clover contributon during the second year.Fewer seedlings established on plots with a high initial P status and abundant in Holcus lanatus and Alopecurus pratensis than on plots deficient in P2O5 and dominated by Agrostis capillaris and Festuca rubra. P2O5decreased numbers of establishing clover seedlings when applied in the slots but not when placed beneath them. Growth was increased most when placement was beneath the slot. Application of P2O5to plots previously supplied with it resulted in 7.2 g total above ground and 1.7 g stolon dry weight (m row)−1compared to 1.3 and 0.1 g respectively in plots with low reserves and DO applied P2O5.Propyzamide greatly increased the yield and the contribution of clover in the presence of high initial P status and applied P2O5. Without propyzamide, clover made only a small contribution until July, averaging 7% for the whole season with little benefit from residual P. Clover growth in late summer was increased from 41 to 292 kg DM ha−1 where P2O5 was applied to P-deficient plots sprayed with propyzamide in the previous autumn. The large increases in clover contribution following propyzamide application were accompanied by small decreases in total seasonal yield of grass. The proportions of H. lanatus and. F. rubra. were decreased and of A. capillaris, increased.Spread of clover from the slots was slow during the first year but was encouraged by both P2O5 and propyzamide during the second year. Factors requiring further investigation are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1985.tb01775.x
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  • 6
    Electronic Resource
    Electronic Resource
    Long-term effects of fertilizer on the botanical composition and soil seed population of a permanent grass sward (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 40 (1985), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Results are presented after 14 and 19 years of the botanical composition and seed bank of moderately fertilized or unfertilized grazed paddocks. Agrostis capillaris, Festuca rubra and broad-leaved weeds contributed a larger proportion of the cover on unfertilized than on fertilized swards. In contrast Poa spp., Holcus lanatus, Alopecurus pratensis and Lolium perenne were relatively more abundant on the fertilized than on the unfertilized swards. A. capillaris was the most plentiful grass in the seed bank of the unfertilized swards but Poa spp. (especially P. annua) in that of the fertilized swards. Some of the relationships between the seed bank and vegetative cover are discussed and the possibility of further increasing the contribution of L. perenne highlighted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1985.tb01780.x
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  • 7
    Electronic Resource
    Electronic Resource
    Slot-seeding investigations. 6. A comparison of the spread and productivity of different white clover varieties introduced into permanent pasture (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 42 (1987), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Seeds of six cultivars of white clover were sown in 1983 in slots in tares of permanent pasture in soil-filled tanks in spring and in small plots in the field during midsummer. The clover cultivars investigated were the large-leaved Olwin and Milk nova, the medium-leaved Grasslands Huia and Aberystwyth S100, and the small-leaved Kent Wild White and Aberystwyth S184. Seeds from an indigenous clover population were also sown in the tanks. All herbage was defoliated at three- to six-week intervals to simulate rotational grazing and assessments were made until autumn 1984.Leaf and stolon production and spread of stolons from the slots were more rapid in Milkanova, S184, Huia and Kent than in Olwen and S100 In the tanks, harvested yields of clover leaf and petiole were largest for Milkanova and Olwen and least for the indigenous population; both Olwen and S100 had a smaller percentage of their total weight outside the slot area than had the other varieties. In the field, Milkanova greatly out yielded all other varieties and S100 yielded the least, contributing 48 and 27%, resf actively, to total herbage yield. The yield of grass differed little between varieties in tanks but in the field it tended to be higher with the smaller than with the larger-leaved varieties. Total herbage yield was largest for Olwen and Milkanova in tanks and for Milkanova in the field. The greatest weight of stolons in tanks was produced by Olwen and in the field by Olwen and Kent, but the greatest length of stolons and number of nodes in both environments occurred in the smalt-leaved varieties, especially Kent. Least length of stolons and fewest nodes in the tanks were produced by Olwen and in the field by Milkanova.It was concluded that all the varieties investigated could be successfully slot-seeded into permanent pastures but that the choice of variety will depend on subsequent use and management of the resulting swards.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1987.tb02100.x
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  • 8
    Electronic Resource
    Electronic Resource
    Age related reactivation of an X-linked gene (1987)
    [s.l.] : Nature Publishing Group
    Nature 327 (1987), S. 725-727 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The cellular ageing process has been attributed to the accumulation of errors in cell control mechanisms with time, although the level at which significant errors occur and the type of error involved are subjects of speculation1'2. The possibility that ageing is associated with epigenetic errors ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/327725a0
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  • 9
    Electronic Resource
    Electronic Resource
    Demonstration of somatic mutation and colonic crypt clonality by X-linked enzyme histochemistry (1988)
    [s.l.] : Nature Publishing Group
    Nature 333 (1988), S. 461-463 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1. Mosaic pattern of histochemical localization of G6PD activity in large bowel from an untreated female mouse heterozy-gous for the GPDX gene (C3HxGPDX). The picture is rep-resentative of that seen in ten 12-week-old animals. They were killed by CO2 inhalation, the bowel removed, opened, ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/333461a0
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  • 10
    Electronic Resource
    Electronic Resource
    The hyperfunctioning intrathyroidal parathyroid gland: A potential pitfall in parathyroid surgery (1987)
    Springer
    World journal of surgery 11 (1987), S. 110-113 
    Details
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une série de 7 malades hyperparathyroïdiens qui présentaient des glandes parathyroïdiennes hyperfonctionnelles situées au sein de la thyroïde est présentée par les auteurs. Dans 7 cas sur 8, elles répondaient aux glandes parathyroïdiennes inférieures et ce fait est discuté en fonction de nos connaissances actuelles de l'embryologie. La présence d'une glande parathyroïdienne hyperfonctionnelle au sein de la thyroïde doit être envisagée en cas d'échec de la chirurgie parathyroïdienne. En fait quand une glande parathyroïde inférieure n'est pas retrouvée en cours d'intervention les auteurs recommandent d'inciser le pôle inférieur de la thyroïde et de pratiquer, si nécessaire, une lobectomie thyroïdienne.
    Abstract: Resumen La glándula paratiroides de ubicación anormal es una bien reconocida causa de fracaso en cirugía paratiroidea. Una de las anomalías más interesantes y provocadoras es la paratiroides hiperfuncionante intratiroidea. Se define la paratiroides intratiroidea como la glándula paratiroides, normal o anormal, que se encuentra totalmente ubicada en el interior de la tiroides y rodeada por parenquima tiroideo. Se presentan las características clínicas, quirúrgicas, y patológicas de 7 pacientes con hiperparatiroidismo, en quienes 8 glándulas paratiroides intratiroideas fueron halladas. Estos 7 casos representan 3.5% de 200 pacientes sometidos a exploración cervical por hiperparatiroidismo entre 1978 y 1984. Siete de las 8 glándulas fueron paratiroides inferiores, hallazgo que es discutido a la luz de conocimientos embriológicos actuales. La paratiroides hiperfuncionante intratiroidea no es una anomalía rara y es considerada como una potencial causa de fracaso en cirugía de paratiroides; por consiguiente, cuando en el curso de la exploración no se encuentre una de las paratiroides inferiores se debe incidir el polo inferior de la tiroides y, si necesario, realizar lobectomía.
    Notes: Abstract The details of 7 patients with hyperparathyroidism in whom 8 intrathyroid hyperfunctioning parathyroid glands were located are presented. Seven of the 8 glands were inferior parathyroids and this observation is discussed in the light of current embryological teaching. The intrathyroidal hyperfunctioning parathyroid is considered to be a potential cause of failed parathyroid surgery and, therefore, when an inferior parathyroid gland is missing, it is recommended that the lower pole of the thyroid be incised and, if necessary, a thyroid lobectomy performed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01658473
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