Introduction: The liver is the main source of serum insulin-like growth factors (IGFs) and IGF-binding proteins (IGFBPs) and the concentration of these proteins might reflect liver function.

Methods: In a retrospective longitudinal study we examined serum levels of total and free IGF-I, IGF-II, IGFBP-1, IGFBP-2, IGFBP-3 and IGFBP-6 in 21 adult patients with end-stage liver disease before and after orthotopic liver transplantation (LTX) by sensitive and specific RIAs. In each patient, the mean value of at least three measurements before and after LTX was calculated.

Results: Before LTX, serum levels of total and free IGF-I, IGF-II, IGFBP-3 were low and showed a rapid and significant increase in almost all patients after successful LTX (total IGF-I: 30 +/- 7 vs. 256 +/- 30 ng/ml, p < 0.001; free IGF-I: 1.3 +/- 0.3 vs. 3.5 +/- 0.6 ng/ml, p < 0.01; IGF-II: 177 +/- 28 vs. 618 +/- 30 ng/ml, p < 0.001; IGFBP-3: 1,230 +/- 136 vs. 3,665 +/- 264 ng/ml, p < 0.001). In contrast, IGFBP-1 was found to be high immediately before LTX, and declined to normal levels after LTX (210 +/- 40 vs. 90 +/- 15 ng/ml, p < 0.01), while IGFBP-2 did not show any significant changes (1,154 +/- 296 vs. 1,303 +/- 192 ng/ ml). Positive correlations were found between IGF-I, IGF-II or IGFBP-3, and serum pseudocholinesterase (R = 0.50, 0.72 and 0.61 respectively, p < 0.001). Negative correlations were found between IGF-I, IGF-II or IGFBP-3, and prothrombin time (R = 0.50, 0.59 and 0.51 respectively, p < 0.001).

Conclusion: Patients with severe liver disease show decreased levels of total and free IGF-I, IGF-II and IGFBP-3, and increased levels of IGFBP-1. These abnormalities are promptly normalized after successful LTX. Thus, serum levels of IGF-I, IGF-II and IGFBP-3 might be useful parameters for the assessment of liver function.

Download full-text PDF

Source
http://dx.doi.org/10.1159/000057960DOI Listing

Publication Analysis

Top Keywords

igf-i igf-ii
24
igf-ii igfbp-3
20
free igf-i
16
+/- ng/ml
16
insulin-like growth
12
liver disease
12
serum levels
12
levels total
12
total free
12
+/-
12

Similar Publications

Dental pulp stem cell-derived intracellular vesicles prevent orthodontic relapse by inhibiting PI3K/Akt/NF-κB-mediated osteoclast activity.

Stem Cell Res Ther

January 2025

State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, NO.237, Luo Yu Road, Hongshan District, Wuhan City, 430079, China.

Article Synopsis
  • Orthodontic relapse poses a major challenge for orthodontic treatment, with incomplete periodontal bone remodeling being a crucial factor contributing to the issue.
  • Researchers isolated and tested dental pulp stem cell-derived intracellular vesicles (DPSC-IV) to assess their effects on bone cell differentiation during orthodontic retention in rats.
  • The results showed that DPSC-IV promoted bone formation, reduced relapse distances and rates, and affected osteoclast activity via a specific signaling pathway, suggesting DPSC-IV could be a promising method to enhance long-term stability after orthodontic treatment.
View Article and Find Full Text PDF

Engineering of a lysosomal-targeted GAA enzyme.

Protein Eng Des Sel

January 2025

Pfizer Rare Disease Research Unit, 610 Main Street, Cambridge, MA 02139, United States.

Pompe disease is a tissue glycogen disorder caused by genetic insufficiency of the GAA enzyme. GAA enzyme replacement therapies for Pompe disease have been limited by poor lysosomal trafficking of the recombinant GAA molecule through the native mannose-6-phosphate-mediated pathway. Here, we describe the successful rational engineering of a chimeric GAA enzyme that utilizes the binding affinity of a modified IGF-II moiety to its native receptor to bypass the mannose-6-phosphate-mediated lysosomal trafficking pathway, conferring a significant increase in cellular uptake of the GAA enzyme.

View Article and Find Full Text PDF

Anxiety disorder, a prevalent mental health issue, is one of the leading causes of disability worldwide. Damage to the blood-brain barrier (BBB) is implicated in anxiety, but its regulatory mechanisms remain unclear. Herein, we show that adrenomedullin 2 (ADM2), a novel angiogenic growth factor, alleviates autistic and anxiety-like behaviors in mice.

View Article and Find Full Text PDF

Serum CS/DS, IGF-1, and IGFBP-3 as Biomarkers of Cartilage Remodeling in Juvenile Idiopathic Arthritis: Diagnostic and Therapeutic Implications.

Biomolecules

November 2024

Department of Clinical Chemistry and Laboratory Diagnostics, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, ul. Jedności 8, 41-200 Sosnowiec, Poland.

Cartilage destruction in juvenile idiopathic arthritis (JIA) is diagnosed, often too late, on basis of clinical evaluation and radiographic imaging. This case-control study investigated serum chondroitin/dermatan sulfate (CS/DS) as a potential biochemical marker of cartilage metabolism, aiming to improve early diagnosis and precision treatment for JIA. We also measured the levels of insulin-like growth factor-1 (IGF-1) and insulin-like growth factor-binding protein-3 (IGFBP-3) (using ELISA methods) in JIA patients ( = 55) both before and after treatment (prednisone, sulfasalazine, methotrexate, administered together), and analyzed their relationships with CS/DS levels.

View Article and Find Full Text PDF

Potential Utility of Circulating MicroRNA-483 as a Biomarker for IGF-II-Associated Non-Islet Cell Tumor Hypoglycemia.

J Clin Endocrinol Metab

December 2024

Department of Endocrinology, Metabolism and Nephrology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan.

Context: In most cases of non-islet cell tumor hypoglycemia (NICTH), high molecular weight forms of insulin-like growth factor II, commonly referred to as big IGF-II, cause hypoglycemia. MicroRNA-483 (miR-483), encoded within an intron of IGF2 gene, has been suggested to be co-expressed with IGF-II.

Objective: The aim of this study is to demonstrate the utility and reliability of circulating miR-483 as a biomarker for diagnosis and therapeutic outcome of NICTH.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!