Alterations in serum thyroid hormones in euthyroid children with circulating anti-thyroid antibodies

1982 ◽  
Vol 99 (4) ◽  
pp. 500-507 ◽  
Author(s):  
Salvador Villalpando ◽  
Ignacia Cisneros ◽  
Guadalupe García-Bulnes ◽  
Bárbara Urquieta ◽  
Lourdes Mondragón ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Age Distribution ◽  
Serum Levels ◽  
Paper Electrophoresis ◽  
Cross Reactivity ◽  
High Serum ◽  
Thyroid Antibodies ◽  
Serum Concentrations ◽  
Serum Samples ◽  
Scanty Information

Abstract. Anti-thyroid antibodies are frequently found in otherwise normal populations (4.5–25.8%); however, there is scanty information about thyroid function status in affected individuals. In this report, the serum concentrations of TSH, T3, T4, rT3 and TBG and the titre of anti-thyroglobulin and anti-microsomal antibodies (haemagglutination technique) were studied in 520 healthy school children (260 boys and 260 girls) aged 6.0–17.9 years. Titres equal or greater than 1:16 of one or both antibodies were detected in 58 boys and in 77 girls (in 33 boys and in 24 girls with, and in 25 boys and 43 girls without, associated abnormalities in the serum concentrations of one or several hormones). The age distribution of thyroid antibodies followed a trimodal pattern with peaks at 7, 11 and 16–17 years in both sexes. The most striking finding was an abnormally elevated T3 concentration in 22 boys and 5 girls with positive antibodies, with no symptoms of thyroid dysfunction and with no clear relationship with simultaneous abnormalities in TSH, T4 or rT3; however, in 5 boys the TBG serum levels were increased. Serum from these patients was incubated with [125I]T3 before free radioactivity was precipitated with dextran-coated charcoal and the aliquots were analyzed by paper electrophoresis. Serum samples with high T3 levels bound significantly more radioactivity than normal or T3-free serum (P < 0.001) and an abnormal peak of radioactivity was present in the gamma globulin fraction, in the former but not in the latter two types of sera. The presence of high serum T3 levels in the absence of clinical symptoms of hyperthyroidism was probably due to sequestration of T3 by the anti-thyroglobulin antibody, which may have cross-reactivity with T3 and T4, as has previously been demonstrated both in animals and humans.

Gastro-intestinal polypeptides in patients treated for medullary carcinoma of the thyroid

1984 ◽  
Vol 106 (1) ◽  
pp. 112-115 ◽  
Author(s):  
Bente Rasmusson
Keyword(s):  
Serum Gastrin ◽  
Clinical Course ◽  
Elevated Serum ◽  
Medullary Carcinoma ◽  
Serum Levels ◽  
High Serum ◽  
Serum Concentrations ◽  
Serum Calcitonin ◽  
Basal Serum ◽  
Previously Treated

Abstract. In 12 patients treated 2 to 58 months previously for medullary carcinoma of the thyroid, basal serum concentrations of calcitonin, gastrin, vasoactive intestinal polypeptide, glucagon, insulin, and pancreatic polypeptide were measured in search of any correlation between these and the clinical course of the disease. All patients had elevated serum calcitonin levels indicating present disease. One patient had increased serum concentrations of several hormones. Another had achlorhydria and high serum gastrin levels. No relationship between calcitonin and gastro-intestinal polypeptides was found in 11 patients. No correlations were found between serum levels of polypeptides and the occurrence of diarrhoea in 5 patients. It is concluded that gastro-intestinal polypeptides, which are produced by other apudomas, are not secreted in more than normal concentrations under basal conditions, by the majority of patients previously treated for medullary carcinoma of the thyroid.

Validation of commercial assays for measurements of trefoil factor family peptides in serum

2011 ◽  
Vol 49 (12) ◽  
Author(s):  
Mie H. Samson ◽  
Ebba Nexo
Keyword(s):  
Blood Donors ◽  
Reference Intervals ◽  
Cross Reactivity ◽  
Serum Concentrations ◽  
Trefoil Factor ◽  
Serum Samples ◽  
Measuring Range ◽  
Trefoil Peptides ◽  
Pathological Conditions ◽  
Trefoil Factor Family

AbstractTrefoil peptides (TFF1, TFF2 and TFF3) are 7–12 kDa molecules, secreted by mucin-producing epithelial cells. Increased serum concentrations have been reported in a number of pathological conditions, which warrants the need for validated commercially available assays.We validated commercial assays for TFF1-3 and compared results obtained with our in-house assays, using serum from blood donors.Level of detection was: ≤0.008 nmol/L. Measuring ranges were: 0.032–0.51 (TFF1), 0.038–0.76 (TFF2) and 0.019–0.15 (TFF3) nmol/L. Imprecision (CV), judged from the measurement of serum pools in two levels, was below 9% (TFF2 and TFF3) but up to 18% (mean 0.41 nmol/L) for TFF1. No cross reactivity between the TFFs (concentrations >100 nmol/L) was observed. The 95% non-parametric reference intervals were: <0.0032–0.53 (TFF1), 0.099–1.4 (TFF2) and 0.086–0.87 (TFF3) nmol/L. Comparing commercial to in-house assays (n=132), showed biases explained by differences in the calibrators (TFF1 and TFF2). A number of samples showed markedly different results.The commercial assays for TFF2 and TFF3 are acceptable for use on serum samples, while the TFF1 assay revealed a poor imprecision and a too narrow measuring range. Results obtained with the commercial and the in-house assays differed, partly because of differences in the calibrators employed.

Organochlorines in Chinese Women: Determinants of Serum Concentrations

2011 ◽  
Vol 183-185 ◽  
pp. 1513-1516
Author(s):  
Wu Wen Lv
Keyword(s):  
Heavy Metals ◽  
Serum Level ◽  
Organochlorine Pesticides ◽  
Organic Pollutants ◽  
Chinese Women ◽  
Serum Levels ◽  
High Serum ◽  
Environmental Chemicals ◽  
Serum Concentrations ◽  
High Serum Level

People are frequently exposed to various environmental chemicals such as organic pollutants, heavy metals, etc. Therefore, the aim of this paper is to investigate the accumulation level of organochlorines in women from Qiqihaer city in china. Of the 160 people investigated, 113 sujects were detected with different serum levels of organochlorine pesticides (range: 0.042 - 33.072 μg/L). Moreover, the results indicated that there was high serum level of accumulated organochlorines pesticides of women in Chinese, and the serum concentrations of organochlorines pesticides was associated with age.

scholarly journals Circulating miRNA-125b Is a Potential Biomarker Predicting Response to Rituximab in Rheumatoid Arthritis

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Isabelle Duroux-Richard ◽  
Yves-Marie Pers ◽  
Sylvie Fabre ◽  
Meryem Ammari ◽  
Dominique Baeten ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Predictive Value ◽  
Predictive Biomarker ◽  
Serum Levels ◽  
High Serum ◽  
Response To Treatment ◽  
Serum Samples ◽  
Total Blood ◽  
Novel Mirna ◽  
Potential Biomarker

Although biologic therapies have changed the course of rheumatoid arthritis (RA), today’s major challenge remains to identify biomarkers to target treatments to selected patient groups. Circulating micro(mi)RNAs represent a novel class of molecular biomarkers whose expression is altered in RA. Our study aimed at quantifying miR-125b in blood and serum samples from RA patients, comparing healthy controls and patients with other forms of rheumatic diseases and arthritis, and evaluating its predictive value as biomarker for response to rituximab. Detectable levels of miR-125b were measured in total blood and serum samples and were significantly elevated in RA patients compared to osteoarthritic and healthy donors. The increase was however also found in patients with other forms of chronic inflammatory arthritis. Importantly, high serum levels of miR-125b at disease flare were associated with good clinical response to treatment with rituximab three months later (P=0.002). This predictive value was not limited to RA as it was also found in patients with B lymphomas. Our results identify circulating miR-125b as a novel miRNA over expressed in RA and suggest that serum level of miR-125b is potential predictive biomarker of response to rituximab treatment.

scholarly journals High Serum Levels of Follistatin in Patients with Ovarian Cancer

2012 ◽  
Vol 40 (3) ◽  
pp. 877-886 ◽  
Author(s):  
P Ren ◽  
F-F Chen ◽  
H-Y Liu ◽  
X-L Cui ◽  
Y Sun ◽  
...  
Keyword(s):  
Ovarian Cancer ◽  
Healthy Subjects ◽  
Ovarian Tissue ◽  
Serum Levels ◽  
Tumour Marker ◽  
High Serum ◽  
Ca 125 ◽  
Ovarian Cysts ◽  
Cancer Antigen 125 ◽  
Serum Samples

OBJECTIVE: This study investigated the potential use of serum follistatin (FST) as a marker for ovarian cancer alongside serum cancer antigen-125 (CA-125). METHODS: Serum samples were collected from patients with ovarian cancer ( n = 45), benign ovarian cysts ( n = 40) or other cancers ( n = 100) and from healthy subjects ( n = 60) for the determination of FST and CA-125 levels using enzyme-linked immunosorbent assays. Expression of FST in ovarian tissue was investigated using immunohistochemical staining. RESULTS: Compared with healthy subjects and patients with benign ovarian cysts, serum FST and CA-125 levels were significantly increased in patients with ovarian cancer. Using the 95% confidence interval for the healthy subjects group as the cut-off value, tumour marker sensitivity and specificity in ovarian cancer were 53.3% and 97% for FST and 77.8% and 84% for CA-125, respectively. Tissue expression of FST protein was more pronounced in ovarian cancer than in normal ovary. CONCLUSIONS: The serum FST level was elevated in the peripheral blood of patients with ovarian cancer and has potential as a tumour marker for ovarian cancer diagnosis. It may be particularly useful when combined with CA-125 detection to reduce the number of false-positive results.

scholarly journals Decreased Platelet Counts and Serum Levels of VEGF-A, PDGF-BB, and BDNF in Extremely Preterm Infants Developing Severe ROP

Neonatology ◽  
2021 ◽  
Vol 118 (1) ◽  
pp. 18-27
Author(s):  
Gunnel Hellgren ◽  
Pia Lundgren ◽  
Aldina Pivodic ◽  
Chatarina Löfqvist ◽  
Anders K. Nilsson ◽  
...  
Keyword(s):  
Platelet Count ◽  
Growth Factor ◽  
Serum Levels ◽  
Clinical Indication ◽  
Serum Concentrations ◽  
Serum Samples ◽  
Platelet Counts ◽  
Extremely Preterm ◽  
Extremely Preterm Infants ◽  
Underlying Mechanisms

Introduction: Thrombocytopenia has been identified as an independent risk factor for retinopathy of prematurity (ROP), although underlying mechanisms are unknown. In this study, the association of platelet count and serum platelet-derived factors with ROP was investigated. Methods: Data for 78 infants born at gestational age (GA) <28 weeks were included. Infants were classified as having no/mild ROP or severe ROP. Serum levels of vascular endothelial growth factor A, platelet-derived growth factor BB, and brain-derived neurotrophic factor were measured in serum samples collected from birth until postmenstrual age (PMA) 40 weeks. Platelet counts were obtained from samples taken for clinical indication. Results: Postnatal platelet counts and serum concentrations of the 3 growth factors followed the same postnatal pattern, with lower levels in infants developing severe ROP at PMA 32 and 36 weeks (p < 0.05–0.001). With adjustment for GA, low platelet counts and low serum concentrations of all 3 factors at PMA 32 weeks were significantly associated with severe ROP. Serum concentrations of all 3 factors also strongly correlated with platelet count (p < 0.001). Conclusion: In this article, we show that ROP, platelet counts, and specific pro-angiogenic factors correlate. These data suggest that platelet-released factors might be involved in the regulation of retinal and systemic angiogenesis after extremely preterm birth. Further investigations are needed.

scholarly journals Association of bovine uterine involution disturbances with serum neuropeptide concentrations

2020 ◽  
Vol 13 (9) ◽  
pp. 1854-1857
Author(s):  
Aida Abultdinova ◽  
Isatay Jakupov ◽  
Joachim Roth ◽  
Klaus Failing ◽  
Axel Wehrend ◽  
...  
Keyword(s):  
Blood Serum ◽  
Dairy Cows ◽  
Serum Levels ◽  
Elisa Test ◽  
Normative Values ◽  
Uterine Disease ◽  
Serum Concentrations ◽  
Serum Samples ◽  
Uterine Involution ◽  
Significant Difference

Background and Aim: Puerperal diseases influence fertility and should be diagnosed as soon as possible. This study aimed to evaluate the applicability of serum concentrations of substance P (SP), vasoactive intestinal polypeptide (VIP), and interleukin (IL)1β in the early diagnosis of uterine involution disturbances. Materials and Methods: Blood serum samples of 86 dairy cows from six different farms were harvested within the first 20 days after calving from cows with uterine involution disturbances and healthy controls, respectively. Serum concentrations for SP, VIP, and IL-1β were determined using commercially available ELISA test kits. Statistical analyses included timely changes in blood serum levels and group comparisons of healthy cows and cows with uterine disease. Results: SP concentrations increased significantly within 20 days after calving (p<0.04) with no significant difference observed between the groups. Moreover, no significant differences were found between VIP and log IL-1β. Conclusion: Results showed that none of the examined serum parameters seems suitable as indicator of uterine involution disorders. Due to the timely changes in serum concentrations of SP after calving, a correlation to diseases might not be precluded. Further research is needed as regards the establishment of normative values concerning this parameter.

scholarly journals Soluble selectins and highly fucosylated ?1-antichymotrypsin in rheumatoid arthritis patients

2015 ◽  
Vol 84 (1) ◽  
pp. 34-40
Author(s):  
Anna Olewicz-Gawlik ◽  
Izabela Korczowska-Łącka ◽  
Paweł Hrycaj
Keyword(s):  
Rheumatoid Arthritis ◽  
Rheumatoid Factor ◽  
Acute Phase Proteins ◽  
Serum Levels ◽  
Enzyme Linked Immunosorbent Assay ◽  
Healthy Controls ◽  
Serum Concentrations ◽  
Serum Samples ◽  
Male And Female ◽  
Leukocyte Extravasation

Introduction. Fucosylation of acute phase proteins and serum soluble selectin levels is increased in rheumatoid arthritis (RA) patients and can influence leukocyte extravasation. Aim. The aim of this study was to evaluate the concentration and fucosylation of ?1-antichymotrypsin (ACT) in relation to serum concentrations of soluble forms of selectins in RA patients. Material and methods. Serum samples of 70 RA patients and 30 healthy controls were examined using sandwich enzyme-linked immunosorbent assay (ELISA). Results. ACT-FR was significantly increased in RA patients when compared to healthy controls (p < 0.001) and significantly correlated with serum concentrations of rheumatoid factor (RF) and antibodies against cyclic citrullinated peptides (ACPA) (p = 0.006, p = 0.04, respectively). Moreover, we found significant correlations between the serum levels of soluble (s)P- and sE-selectin and ACT-FR (p = 0.008 and p = 0.03, respectively) only in male RA patients.Conclusions. Fucosylation of ACT differs between male and female RA patients and is related to sP- and sE-selectin levels only in men.

Relationship between Serum Concentrations and Urinary Excretions of Monoclonal Free Light Chains (mFLC) Detectable as Bence Jones Proteins (BJP) by Immunofixation Electrophoresis (IFE) in Patients with Multiple Myeloma (MM).

Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 5060-5060
Author(s):  
M.R. Nowrousian ◽  
D. Brandhorst ◽  
C. Sammet ◽  
M. Kellert ◽  
R. Daniels ◽  
...  
Keyword(s):  
Renal Function ◽  
Reference Range ◽  
High Serum ◽  
Serum Concentrations ◽  
Serum Samples ◽  
Paired Samples ◽  
Upper Limit ◽  
Median Serum ◽  
Positive Urine ◽  
Automated Immunoassay

Abstract Introduction. mFLC are important markers for the diagnosis and monitoring of MM. This study for the first time determines serum concentrations of mFLC which are required to produce renal overflow and BJP in urine detectable by IFE and evaluates the relationship between urinary excretions of mFLC and renal function. Patients and methods. 378 paired samples of serum and 24-h-urine from 82 patients were evaluated during the course of their disease. Serum FLC concentrations were measured nephelometrically using an automated immunoassay. Urine samples were tested for clonal bands using agarose gel electrophoresis, scanning densitometry and visual checking of electrophoretic gels. BJP were identified by urine IFE. Results. Among the 378 serum samples, 173 (46%) were normal and 205 (54%) were abnormal for FLC k/l ratios, indicating the presence of mFLC, 98 of kappa and 107 of lambda type. In 98 serum samples with mFLC kappa, 48 (49%) were associated with negative urine IFE analysis and 50 (51%) had positive urine tests. The median serum kappa concentrations were 40 mg/L (range 6–710) for negative urines and 113 mg/L (range 7–39500) for positive urines (p=0.001), indicating an almost threefold greater median value which was approximately six times the upper limit of the reference range (3.3.–19.4 mg/L) for samples with positive urine IFE analysis. In 107 serum samples with mFLC lambda, 70 (65%) were negative in urine and 37 (35%) were positive. The median serum concentrations associated with negative urine IFE tests were 44 mg/L (range 3–561) and were 278 mg/L (range 5–7060) for positive urines (p=0.0001), indicating an almost sixfold difference. This was approximately 2.5-fold greater than for kappa, and approximately 11 times the upper limit of the reference range (5.7–26.3 mg/L) for samples with positive urine IFE analysis. Renal excretions of mFLC, in addition, were determined primarily by serum concentrations for lambda, but by serum concentrations, renal function and, probably, molecular changes for kappa. For both, renal excretions significantly decreased at high serum concentrations combined with renal dysfunction. Conclusion. Based on these results, relatively high serum concentrations of mFLC are required to produce renal overflow and positive urine IFE tests for BJP. Furthermore, urine excretions of mFLC are determined primarily by serum concentrations, but also by renal function, particularly for kappa.

scholarly journals Serum level of miR-142-3p predicts prognostic outcome for colorectal cancer following curative resection

2019 ◽  
Vol 47 (5) ◽  
pp. 2116-2125 ◽  
Author(s):  
Wencang Gao ◽  
Dexiang Pang ◽  
Senquan Yu
Keyword(s):  
Colorectal Cancer ◽  
Cancer Survival ◽  
Tumor Resection ◽  
Serum Levels ◽  
High Serum ◽  
Serum Samples ◽  
Prognostic Outcome ◽  
Polymerase Chain ◽  
Diagnostic And Prognostic Value ◽  
Low Serum

Objective MicroRNA (miR)-142-3p may function as a tumor suppressor in the development of various cancers. In this study, we measured serum levels of miR-142-3p in patients with colorectal cancer (CRC) to evaluate the diagnostic and prognostic value of miR-142-3p. Methods Serum samples from 363 consecutive CRC patients and 156 healthy controls were retrospectively collected. Serum miR-142-3p levels were measured using real-time quantitative reverse transcription polymerase chain reaction. All patients were followed up regularly after tumor resection. The correlation between serum miR-142-3p level and survival outcomes was analyzed. Results Serum levels of miR-142-3p were significantly lower in CRC patients than in healthy volunteers. A low serum miR-142-3p level was significantly associated with advanced cancer. Survival analysis demonstrated that patients with a low serum miR-142-3p had a lower 5-year overall survival rate than patients with a high serum miR-142-3p level (67.4% vs. 76.9%). Serum miR-142-3p level was also shown to be an independent risk factor for CRC in multivariate analysis (hazard ratio, 2.68; 95% confidence interval: 1.21–7.95). Conclusions Serum miR-142-3p might serve as a useful diagnostic and prognostic marker for CRC.

Sign in / Sign up

Export Citation Format

Share Document