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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Novel Use of Calcimimetic Activity to Diagnose Primary Hyperparathyroidism in a Patient With Persistently Low-Normal Parathyroid Hormone Level

Bandaru, Sindhura, Manthri, Sukesh, Nallala, Deepika, Mamillapalli, Chaitanya K., Jakoby, Michael G. 23 July 2020 (has links)
Primary hyperparathyroidism (PHPT) is the most common etiology of hypercalcemia in the ambulatory setting and usually presents with an intact parathyroid hormone (PTH) level that is elevated or inappropriately near the upper limit of the laboratory reference range. However, PHPT with low-normal PTH level is reported in the peer-reviewed literature, and this atypical presentation may delay diagnosis of PHPT. We present a case of PHPT with persistently low-normal PTH level in which the PTH dependence of hypercalcemia was demonstrated by the response to treatment with the calcimimetic agent cinacalcet.
42

The functional patholgy of the parathyroid glands of cows with experimental hypervitaminosis D /

Capen, C. C. January 1965 (has links)
No description available.
43

Fatores preditivos da hipofunção do autoimplante de paratireóide em pacientes submetidos à paratireoidectomia total por hiperparatireoidismo secundário à insuficiência renal crônica / redictive factors of parathyroid auto-implant hypofunction in patients with chronic kidney disease submitted to totalparathyroidectomy due to secondary hyperparathyroidism

Santos, Stenio Roberto de Castro Lima 06 November 2012 (has links)
O hiperparatireoidismo (HPT) secundário é uma complicação da doença renal crônica. A paratireoidectomia total com autoimplante proporciona bons resultados no seu tratamento, mas alguns doentes não desenvolvem níveis adequados de hormônio da paratireóide (PTH) após a operação. Os objetivos, do presente estudo, foram analisar fatores que poderiam interferir no funcionamento do autoimplante de glândula paratireóide e quantificar a taxa de hipofunção segundo alguns critérios. Casuística e Métodos: em um estudo prospectivo e observacional, foram analisados a idade, sexo, peso, altura e a etnia. A causa da doença renal crônica (DRC), tempo de DRC antes da paratireoidectomia, tempo de diálise, antecedente de intoxicação por alumínio e tempo de diagnóstico do HPT. Os dados bioquímicos estudados foram os níveis pré-operatórios de fósforo, cálcio total, cálcio iônico, PTH e fosfatase alcalina e aos 6 meses e 1 ano de pós-operatório. Registrada a quantidade de cálcio (gluconato e carbonato) e calcitriol ofertada no pós-operatório sendo realizada durante a primeira semana, no primeiro, terceiro sexto mês de pós-operatório. A histologia da glândula implantada foi analisada. Os pacientes foram divididos, segundo os níveis preconizados de PTH para indivíduos normais e segundo as recomendações da Fundação Nacional do Rim dos Estados Unidos da América (K/DOQI), em grupos hipofuncionante (grupo 1) e funcionante ( grupo 2). Resultados: Entre julho de 2007 e dezembro de 2008, 48 pacientes (18 homens e 30 mulheres) foram submetidos à paratireoidectomia total com autoimplante imediato. A média de idade dos indivíduos foi 44,7 anos (EP: 12,6), a do tempo de diálise foi 9,6 anos (EP: 5,1), a média do tempo de diagnóstico do hiperparatireoidismo de 2,6 anos (EP: 2). A principal causa da doença renal crônica foi a hipertensão arterial em 16 indivíduos (33,3%) seguida de causa indefinida em 12 (25%), GESF em 5 (10,4%), diabetes mellitus em 4 (8,3%). Com relação ao número de fragmentos implantados, houve tendência a uma diferença entre os grupos 1 e 2 (p= 0,14). Houve tendência a uma diferença entre os grupos 1 e 2 (p= 0,1) no que diz respeito a histologia da glândula implantada. O índice de hipofunção do auto implante, em 1 ano, foi de 21,27% no critério do nível de PTH para indivíduos normais e de 72,9% segundo as recomendações do KDOIQ. As complicações e óbitos por causa cardiovascular não diferiram entre os grupos. CONCLUSÃO: a frequência de hipofunção do implante imediato de paratireóide foi de 21,27% e de 72,9% segundo as recomendações do KDOQ e não houve a identificação de fatores preditivos para sua hipofunção. / The secondary hyperparathyroidism (HPT) is a complication of chronic kidney disease. A total parathyroidectomy with autograft provides good results in treatment, but some patients do not develop adequate levels of parathyroid hormone (PTH) after operation. The objectives of study were to analyze factors that could interfere with the function of the parathyroid gland autograft and measure the rate of hypofunction according several criteria. Patients and Methods: a prospective observational study were analyzed age, sex, weight, height and ethnicity. The cause of chronic kidney disease (CKD), duration of CKD prior to parathyroidectomy, duration of dialysis, previous aluminum intoxication and time of diagnosis of HPT. The biochemical data studied : preoperative levels of phosphorus, total calcium, ionized calcium, PTH and alkaline phosphatase and 6 months and 1 year postoperatively. Recorded the amount of calcium (gluconate and carbonate) and calcitriol offered postoperative being held during the first week, the first, third, sixth month postoperatively. Histology of the implanted gland was analyzed. Patients were divided according to the recommended levels of PTH for normal individuals and in accordance with the recommendations of the National Foundation Kidney the United States of America (K / DOQI) in hypofunction groups (group 1) and functional (group 2). Results: Between July 2007 and December 2008, 48 patients (18 men and 30 women) underwent total parathyroidectomy with immediate autograft. The mean age was 44.7 years (SE: 12.6), the duration of dialysis was 9.6 years (SE: 5.1), the average time of diagnosis of hyperparathyroidism 2.6 years (EP: 2). The main cause of chronic renal disease was hypertension in 16 patients (33.3%) followed by unknown cause in 12 (25%), FSGS in 5 (10.4%), diabetes mellitus in 4 (8.3%.). The number of implanted fragments, there was a trend to a difference between groups 1 and 2 (p = 0.14). There was a trend to a difference between groups 1 and 2 (p = 0.1) as regards the histology of the gland implanted. The rate of self hypofunction implant at 1 year was 21.27% at the discretion of the PTH level in normal individuals and 72.9% according to the recommendations of KDOIQ. Complications and deaths from cardiovascular causes did not differ between groups. CONCLUSION: The rate of hypofunction of the parathyroid immediate implant was 21.27% and 72.9% according to the recommendations of KDOIQ and there was no identification of predictive factors for its hypofunction.
44

Studies on the possible functional interrelation between the thyro-parathyroid apparatus and epinephrine secretion from the adrenal medulla ...

Cortell, Ruth Eleanor, January 1941 (has links)
Thesis (Ph. D.)--University of Chicago, 1939. / Lithoprinted. "List of references": p. 17-19.
45

Fatores preditivos da hipofunção do autoimplante de paratireóide em pacientes submetidos à paratireoidectomia total por hiperparatireoidismo secundário à insuficiência renal crônica / redictive factors of parathyroid auto-implant hypofunction in patients with chronic kidney disease submitted to totalparathyroidectomy due to secondary hyperparathyroidism

Stenio Roberto de Castro Lima Santos 06 November 2012 (has links)
O hiperparatireoidismo (HPT) secundário é uma complicação da doença renal crônica. A paratireoidectomia total com autoimplante proporciona bons resultados no seu tratamento, mas alguns doentes não desenvolvem níveis adequados de hormônio da paratireóide (PTH) após a operação. Os objetivos, do presente estudo, foram analisar fatores que poderiam interferir no funcionamento do autoimplante de glândula paratireóide e quantificar a taxa de hipofunção segundo alguns critérios. Casuística e Métodos: em um estudo prospectivo e observacional, foram analisados a idade, sexo, peso, altura e a etnia. A causa da doença renal crônica (DRC), tempo de DRC antes da paratireoidectomia, tempo de diálise, antecedente de intoxicação por alumínio e tempo de diagnóstico do HPT. Os dados bioquímicos estudados foram os níveis pré-operatórios de fósforo, cálcio total, cálcio iônico, PTH e fosfatase alcalina e aos 6 meses e 1 ano de pós-operatório. Registrada a quantidade de cálcio (gluconato e carbonato) e calcitriol ofertada no pós-operatório sendo realizada durante a primeira semana, no primeiro, terceiro sexto mês de pós-operatório. A histologia da glândula implantada foi analisada. Os pacientes foram divididos, segundo os níveis preconizados de PTH para indivíduos normais e segundo as recomendações da Fundação Nacional do Rim dos Estados Unidos da América (K/DOQI), em grupos hipofuncionante (grupo 1) e funcionante ( grupo 2). Resultados: Entre julho de 2007 e dezembro de 2008, 48 pacientes (18 homens e 30 mulheres) foram submetidos à paratireoidectomia total com autoimplante imediato. A média de idade dos indivíduos foi 44,7 anos (EP: 12,6), a do tempo de diálise foi 9,6 anos (EP: 5,1), a média do tempo de diagnóstico do hiperparatireoidismo de 2,6 anos (EP: 2). A principal causa da doença renal crônica foi a hipertensão arterial em 16 indivíduos (33,3%) seguida de causa indefinida em 12 (25%), GESF em 5 (10,4%), diabetes mellitus em 4 (8,3%). Com relação ao número de fragmentos implantados, houve tendência a uma diferença entre os grupos 1 e 2 (p= 0,14). Houve tendência a uma diferença entre os grupos 1 e 2 (p= 0,1) no que diz respeito a histologia da glândula implantada. O índice de hipofunção do auto implante, em 1 ano, foi de 21,27% no critério do nível de PTH para indivíduos normais e de 72,9% segundo as recomendações do KDOIQ. As complicações e óbitos por causa cardiovascular não diferiram entre os grupos. CONCLUSÃO: a frequência de hipofunção do implante imediato de paratireóide foi de 21,27% e de 72,9% segundo as recomendações do KDOQ e não houve a identificação de fatores preditivos para sua hipofunção. / The secondary hyperparathyroidism (HPT) is a complication of chronic kidney disease. A total parathyroidectomy with autograft provides good results in treatment, but some patients do not develop adequate levels of parathyroid hormone (PTH) after operation. The objectives of study were to analyze factors that could interfere with the function of the parathyroid gland autograft and measure the rate of hypofunction according several criteria. Patients and Methods: a prospective observational study were analyzed age, sex, weight, height and ethnicity. The cause of chronic kidney disease (CKD), duration of CKD prior to parathyroidectomy, duration of dialysis, previous aluminum intoxication and time of diagnosis of HPT. The biochemical data studied : preoperative levels of phosphorus, total calcium, ionized calcium, PTH and alkaline phosphatase and 6 months and 1 year postoperatively. Recorded the amount of calcium (gluconate and carbonate) and calcitriol offered postoperative being held during the first week, the first, third, sixth month postoperatively. Histology of the implanted gland was analyzed. Patients were divided according to the recommended levels of PTH for normal individuals and in accordance with the recommendations of the National Foundation Kidney the United States of America (K / DOQI) in hypofunction groups (group 1) and functional (group 2). Results: Between July 2007 and December 2008, 48 patients (18 men and 30 women) underwent total parathyroidectomy with immediate autograft. The mean age was 44.7 years (SE: 12.6), the duration of dialysis was 9.6 years (SE: 5.1), the average time of diagnosis of hyperparathyroidism 2.6 years (EP: 2). The main cause of chronic renal disease was hypertension in 16 patients (33.3%) followed by unknown cause in 12 (25%), FSGS in 5 (10.4%), diabetes mellitus in 4 (8.3%.). The number of implanted fragments, there was a trend to a difference between groups 1 and 2 (p = 0.14). There was a trend to a difference between groups 1 and 2 (p = 0.1) as regards the histology of the gland implanted. The rate of self hypofunction implant at 1 year was 21.27% at the discretion of the PTH level in normal individuals and 72.9% according to the recommendations of KDOIQ. Complications and deaths from cardiovascular causes did not differ between groups. CONCLUSION: The rate of hypofunction of the parathyroid immediate implant was 21.27% and 72.9% according to the recommendations of KDOIQ and there was no identification of predictive factors for its hypofunction.
46

Mögliche Rolle von Cystein-Resten in der dritten extrazellulären Schleife des humanen PTH-2 Rezeptors für dessen Ligandenspezifität / Possible role of cysteine residues in the third extracellular loop of the human PTH-2 receptor for its ligand specificity

Endress, Eva-Maria January 2006 (has links) (PDF)
Der Mechanismus, welcher den GPCR eine Unterscheidung verschiedener Liganden ermöglicht, ist immer noch ungeklärt. Der GPCR für PTH und PTHrP (=PTH1-R) bindet PTH und das strukturell recht unterschiedliche PTHrP. Beide Liganden aktivieren mit etwa vergleichbarer Potenz eben diesen PTH1-R, indem sie sowohl an die intrazelluläre AC als auch an die PLC ankoppeln. Ein vor einigen Jahren überraschend kloniertes neues Mitglied der Sekretin/PTH/Calcitonin-Familie (= Familie B) der GPCR, der PTH2-R, antwortet jedoch nur nach Bindung von PTH bzw. TIP 39, nicht aber nach PTHrP, mit einem intrazellulären cAMP-Signal. Allerdings sind weder hPTH noch TIP39 in der Lage, eine intrazelluläre IP3-Antwort auszulösen. Welche strukturellen Gegebenheiten des PTH2-Rezeptors ermöglichen diese effiziente Ligandendiskriminierung? Analysen der Rezeptor-Liganden-Interaktion und die Aufklärung dieses Komplexes sind ein Schlüsselelement im Design spezifischer Rezeptoragonisten und –antagonisten mit bedeutendem therapeutischen Potential. Eine hochkonservierte Eigenschaft aller Rezeptoren der Familie B der GPCR ist die Lokalisation von sechs extrazellulären Cysteinen, die sowohl zur Expression intakter Rezeptoren von Nöten sind als auch durch mögliche Disulfidbrückenbildung untereinander einen entscheidenden Einfluss auf das Bindungsverhalten ausüben. Die Hypothese der vorliegenden Arbeit ist, dass zwei Cysteine, präsent in der 3. Extrazellulärschleife des PTH2-R, nicht aber in der des PTH1-R, dessen Ligandenspezifität bedingen. Tatsächlich führte das Ausschalten eines entsprechenden Cysteins im Opossum-PTH2-R zu einem exprimierten Rezeptor, der PTHrP zu einem gewissen Grad binden und daraufhin auch den AC/cAMP-Signalweg aktivieren konnte. (184) Es liegt daher die Vermutung nahe, dass diese beiden Cysteine des PTH2-R entweder durch Disulfidbrückenbildung untereinander oder zu den restlichen Cysteinen in der extrazellulären Region die sterische Konfiguration der Rezeptoren und somit auch deren Bindungs- und Signalverhalten ändern können. Auf diesen Ergebnissen und Annahmen basierend, war daher Gegenstand diesen Projekts zunächst das Einfügen verschiedener Punktmutationen in die cDNA des humanen PTH1-R. Es wurden Konstrukte konzipiert zur Einfügung beider Cysteine einzeln (Ala426Cys und Tyr443Cys) oder kombiniert (Ala426Cys/Tyr443Cys). Nach Expression der drei mutierten Rezeptoren und beider Wildtyp-Rezeptoren war Ziel, das Ligandenbindungsverhalten und somit die Expression intakter Rezeptoren an der Zelloberfläche zu untersuchen. Studien des Signalverhaltens bezüglich des AC/cAMP- und des PLC/IP3- Signalwegs, ebenso wie Internalisierungsassays strebten dann die vollständige Charakterisierung der mutierten Rezeptoren an. / Cysteine residues are structurally important for the function of the PTH-1 receptor (PTH1R), probably by forming disulfide bridges. The more recently discovered PTH-2 receptor (PTH2R) differs from the PTH1R by not recognizing PTH-related protein (PTHrP). We hypothesized, that two cystein residues present in the thrid loop of the PTH2R, but not in the PTH1R, might cause this ligand specificity. In fact, eliminating one of the corresponding cysteine residues in the opossum PTH2R resulted in recognition of PTHrP, in contrast to wildtype PTH2R (P Turner et al (1998) J Biol Chem 273: 3830-3837)
47

Einfluss der Stimulation nikotinerger Rezeptoren auf die endotheliale PTHrP-Expression und die endotheliale Suszeptibilität gegenüber Apoptose

Röthig, Anja January 2009 (has links)
Zugl.: Giessen, Univ., Diss., 2009
48

The effects of plyometrics or resistance-training on markers of bone turnover and hormones in men

Rogers, Robert S., Hinton, Pamela S. January 2009 (has links)
The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on December 31, 2009). Thesis advisor: Dr. Pamela S. Hinton. Includes bibliographical references.
49

The comparative effects of sodium fluoride and parathormone on the calcium and phosphorus metabolism of normal and parathyroidectomized rats

Caldwell, Emily Cauthorn, 1911- January 1936 (has links)
No description available.
50

The effect if 1-alpha-hydroxycholecalciferol and parathyroidectomy on cardiovascular lesions in uraemia an experimental study in the rat /

Krog, Michael. January 1983 (has links)
Thesis (doctoral)--Uppsala University, 1983. / Bibliography: p. 24-28.

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