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Hamidreza Iranpoor, Eskandar Omidinia, Venus Vatankhah, Vahid Gharanjik, Majid Shahbazi
BACKGROUND: Human insulin-like growth factor type 1 (hIGF-1) is a protein consisting of 70 amino acids (MW=7.6 kDa) and mainly synthesized by liver. Mecasermin (Trade name INCRELEX) is the synthetic form of the protein which is used as an effective treatment for particular disorders such as short stature, type 1 and 2 diabetes, and wound healing. Current study was aimed to investigate the expression of human insulin-like growth factor type1 in Escherichia coli (E. coli) BL21 (DE3) expression system in order to produce an active recombinant form of the protein...
July 2015: Avicenna Journal of Medical Biotechnology
Peter Bang, Michel Polak, Joachim Woelfle, Aude Houchard
BACKGROUND/AIMS: We report data from the EU Increlex® Growth Forum Database (IGFD) Registry, an ongoing, open-label, observational study monitoring clinical practice use of recombinant human insulin-like growth factor-1 (rhIGF-1) therapy in children. METHODS: Safety and effectiveness data on rhIGF-1 treatment of 195 enrolled children with growth failure were collected from December 2008 to September 2013. RESULTS: Mean ± SD (95% CI) height velocity during first year of rhIGF-1 treatment was 6...
2015: Hormone Research in Pædiatrics
Rie Harboe Nielsen, Lars Holm, Jacob Kildevang Jensen, Katja Maria Heinemeier, Lars Remvig, Michael Kjaer
The classic form of Ehlers-Danlos syndrome (cEDS) is an inherited connective tissue disorder, where mutations in type V collagen-encoding genes result in abnormal collagen fibrils. Thus the cEDS patients have pathological connective tissue morphology and low stiffness, but the rate of connective tissue protein turnover is unknown. We investigated whether cEDS affected the protein synthesis rate in skin and tendon, and whether this could be stimulated in tendon tissue with insulin-like growth factor-I (IGF-I)...
October 1, 2014: Journal of Applied Physiology
Hanane Latrech, Albane Simon, Jacques Beltrand, Jean-Claude Souberbielle, Ghizlane Belmejdoub, Michel Polak
BACKGROUND: Laron syndrome is caused by a mutation in the growth hormone (GH) receptor and manifests as insulin-like growth factor-I (IGF-I) deficiency, severe short stature, and early hypoglycemia. We report a case with postprandial hyperglycemia, an abnormality not reported previously. Postprandial hyperglycemia was due to chronic IGF-I deficiency, and was reversed by IGF-I replacement therapy. METHODS: A Moroccan girl referred for short stature at 7 years and 8 months of age had dwarfism [height, 78 cm (-9 SDs); weight, 10 kg (-4 SDs)], hypoglycemia, and truncal obesity...
2012: Hormone Research in Pædiatrics
M Hansen, A Boesen, L Holm, A Flyvbjerg, H Langberg, M Kjaer
Collagen is the predominant structural protein in tendons and ligaments, and can be controlled by hormonal changes. In animals, injections of insulin-like growth factor I (IGF-I) has been shown to increase collagen synthesis in tendons and ligaments and to improve structural tissue healing, but the effect of local IGF-I administration on tendon collagen synthesis in human has not been studied. The purpose of this study was to study whether local injections of IGF-I would have a stimulating effect on tendon collagen synthesis...
October 2013: Scandinavian Journal of Medicine & Science in Sports
Silvia Marín, Paula Casano-Sancho, Nancy Villarreal-Peña, Giorgia Sebastiani, Sergio Pinillos, Belén Pérez-Dueñas, Vivian Hwa, Ron G Rosenfeld, Lourdes Ibáñez
BACKGROUND: Primary growth hormone insensitivity (GHI) and triple A syndrome are rare autosomal recessive disorders. CASE REPORT: The patient, a 12-year-old boy from consanguineous parents, was referred for short stature at the age of 7 years (height: -5.4 SD score). He had low serum insulin-like growth factor I (IGF-I) and IGF binding protein 3 and a blunted IGF-I response to recombinant human GH; molecular analysis of the GH receptor disclosed a homozygous A(-1)→G(-1) at the 5' pseudoexon 6Ψ splice site...
2012: Hormone Research in Pædiatrics
Eric R Braverman, Abdalla Bowirrat, Uma J Damle, Swetha Yeldandi, Thomas Jh Chen, Margaret Madigan, Mallory Kerner, Stanley X Huang, Stella Savarimuthu, Kenneth Blum
INTRODUCTION: Adult Growth hormone Deficiency is a well known phenomenon effecting both males and females. Adult Growth Hormone Deficiency is marked by a number of neuropsychiatric, cognitive performance, cardiac, metabolic, muscular, and bone symptoms and clinical features. There is no known standardized acceptable therapeutic modality to treat this condition. A recent meta-analysis found that after 16 years of Growth Hormone replacement therapy a large proportion of the patients still had Growth Hormone associated symptoms especially related to executive functioning...
2010: Journal of Medical Case Reports
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