Thyroid peroxidase expression in diseased human thyroid glands

1999 ◽  
Vol 10 (3) ◽  
pp. 223-228 ◽  
Author(s):  
Marcus A. Lima ◽  
Valéria A. Gontijo ◽  
Marlene C. Santos ◽  
Fernando C. L. Schmitt
Keyword(s):  
Human Thyroid ◽  
Thyroid Peroxidase ◽  
Thyroid Glands

Thyroid peroxidase and thyroglobulin expression in normal human thyroid glands

1998 ◽  
Vol 9 (4) ◽  
pp. 333-338 ◽  
Author(s):  
Marcus A. Lima ◽  
Valéria A. Gontijo ◽  
Fernando C. L. Schmitt
Keyword(s):  
Human Thyroid ◽  
Thyroid Peroxidase ◽  
Thyroid Glands ◽  
Normal Human

scholarly journals Improved assay method for activity of thyroid peroxidase-catalysed coupling of iodotyrosine residues of thyroglobulin utilizing h.p.l.c. for analysis of iodothyronines

1989 ◽  
Vol 262 (1) ◽  
pp. 209-214 ◽  
Author(s):  
T Ohmori ◽  
O Tarutani ◽  
T Hosoya
Keyword(s):  
Ethyl Acetate ◽  
Peroxidase Activity ◽  
Sodium Cholate ◽  
Human Thyroid ◽  
Assay Method ◽  
Thyroid Peroxidase ◽  
Graves Disease ◽  
Thyroid Glands ◽  
Hydrolysis Of

The coupling of iodotyrosine residues of thyroglobulin (Tg) catalysed by thyroid peroxidase (TPO) has scarcely been studied with respect to the TPO of abnormal human thyroid glands. The present paper proposes a rapid and convenient assay method applicable for determining the coupling activity of a sample of less than 500 mg from each patient's thyroid. The main characteristics of the method are as follows: (i) mitochondrial/microsomal fractions of thyroid glands were treated with sodium cholate plus trypsin, and the supernatants obtained by ultracentrifugation were directly used for the assay of coupling and peroxidase activity of TPO; (ii) the formation of iodotyrosine residues catalysed by TPO was performed by using chemically iodinated Graves'-disease Tg containing 41 iodine atoms per molecule and with a high iodotyrosine and a low iodothyronine content; (iii) newly synthesized iodothyronine residues (thyroxine, 3,5,3′-tri-iodothyronine, and 3,3′,5′-tri-iodothyronine) were analysed by h.p.l.c. after hydrolysis of Tg with proteinases and extraction of iodothyronines with ethyl acetate.

Histological Study of Human Thyroid Gland Relative Proportion of Parenchyma and Stroma in Thyroid Glands of Bangladeshi People

2013 ◽  
Vol 1 (2) ◽  
pp. 17-20
Author(s):  
Md Enayet Ullah ◽  
Hasna Hena ◽  
Rubina Qasim
Keyword(s):  
Thyroid Gland ◽  
Histological Study ◽  
Relative Proportion ◽  
Age Groups ◽  
Human Thyroid ◽  
Structural Units ◽  
Thyroid Glands ◽  
Group A ◽  
Group B ◽  
Connective Tissue Sheath

Deep cervical fascia forms a connective tissue sheath around the thyroid gland. Delicate trabeculae and septa penetrate the gland indistinctly dividing the gland into lobes and lobules which in turn composed of follicles.1,2,3 These follicles are structural units of thyroid gland which varies greatly in size and shape.4 The number of follicles varies in different age groups. The study was carried out to see the percentage of area occupied by follicles in the stained section of thyroid glands in different age groups. The collected samples were grouped as A (3.5 – 20yrs), B (21- 40yrs) & C (41 – 78yrs). Percentage of area occupied by follicles was (58.55±10.72) in group A, (63.79±12.35) in group B + (63.39±8.29) in group C.DOI: http://dx.doi.org/10.3329/updcj.v1i2.13981 Update Dent. Coll. j. 2011: 1(2): 17-20

An Analysis of the Structure and Antigenicity of Different Forms of Human Thyroid Peroxidase

Thyroid ◽  
1994 ◽  
Vol 4 (2) ◽  
pp. 173-178 ◽  
Author(s):  
JAMES R. BAKER ◽  
PATRICIA ARSCOTT ◽  
JENNIFER JOHNSON
Keyword(s):  
Human Thyroid ◽  
Thyroid Peroxidase ◽  
Human Thyroid Peroxidase

scholarly journals Mutation screening of the thyroid peroxidase gene in a cohort of 55 Portuguese patients with congenital hypothyroidism

2005 ◽  
Vol 152 (2) ◽  
pp. 193-198 ◽  
Author(s):  
Carina Rodrigues ◽  
Paula Jorge ◽  
José Pires Soares ◽  
Isaura Santos ◽  
Regina Salomão ◽  
...  
Keyword(s):  
Congenital Hypothyroidism ◽  
Mutation Screening ◽  
Gene Mutations ◽  
Human Thyroid ◽  
Thyroid Peroxidase ◽  
Molecular Testing ◽  
Missense Mutations ◽  
Human Thyroid Peroxidase ◽  
Iodide Organification Defect ◽  
Organification Defect

Objective: Defects in the human thyroid peroxidase (TPO) gene are reported to be one of the causes of congenital hypothyroidism (CH) due to a total iodide organification defect. The aim of the present study was to determine the nature and frequency of TPO gene mutations in patients with CH, characterised by elevated TSH levels and orthotopic thyroid gland, identified in the Portuguese National Neonatal Screening Programme. Subjects and methods: The sample comprised 55 patients, from 53 unrelated families, with follow-up in the endocrinology clinics of the treatment centres of Porto and Lisbon. Mutation screening in the TPO gene (exons 1–17) was performed by single-strand conformational analysis followed by sequencing of fragments with abnormal migration patterns. Results: Eight different mutations were detected in 13 patients (seven homozygotes and six compound heterozygotes). Novel mutations included three missense mutations, namely 391T > C (S131P), 1274A > G (N425S) and 2512T > A (C838S), as well as the predictable splice mutation 2748G > A (Q916Q/spl?). The undocumented polymorphism 180-47A > C was also detected. Conclusion: The results are in accordance with previous observations confirming the genetic heterogeneity of TPO defects. The proportion of patients in which the aetiology was determined justifies the implementation of this molecular testing in our CH patients with dyshormonogenesis.

COMPOSITION EN ACIDES AMINES DE THYROGLOBULINES PROVENANT DE SUJETS EUTHYROIDIENS ET GOITREUX

1966 ◽  
Vol 53 (2) ◽  
pp. 297-302 ◽  
Author(s):  
Janine Bismuth ◽  
Marcel Rolland ◽  
Serge Lissitzky
Keyword(s):  
Amino Acid ◽  
Amino Acid Composition ◽  
Acid Composition ◽  
Human Thyroid ◽  
Thyroid Glands ◽  
Acides Aminés ◽  
Normal Human

ABSTRACT Amino acid composition of S19 thyroglobulin purified from three normal human thyroid glands, a hyperthyroid goiter, two hypothyroid familial goiters and a euthyroid goiter, has been determined. No significant differences in amino acid composition has been observed.

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