151
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Ribot J, Caliaperoumal G, Paquet J, Boisson-Vidal C, Petite H, Anagnostou F. Type 2 diabetes alters mesenchymal stem cell secretome composition and angiogenic properties. J Cell Mol Med 2016; 21:349-363. [PMID: 27641937 PMCID: PMC5264143 DOI: 10.1111/jcmm.12969] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/06/2016] [Indexed: 01/09/2023] Open
Abstract
This study aimed at characterizing the impact of type 2 diabetes mellitus (T2DM) on the bone marrow mesenchymal stem cell (BMMSC) secretome and angiogenic properties. BMMSCs from Zucker diabetic fatty rats (ZDF) (a T2DM model) and Zucker LEAN littermates (control) were cultured. The supernatant conditioned media (CM) from BMMSCs of diabetic and control rats were collected and analysed. Compared to results obtained using CM from LEAN‐BMMSCs, the bioactive content of ZDF‐BMMSC CM (i) differently affects endothelial cell (HUVEC) functions in vitro by inducing increased (3.5‐fold; P < 0.01) formation of tubule‐like structures and migration of these cells (3‐fold; P < 0.001), as well as promotes improved vascular formation in vivo, and (ii) contains different levels of angiogenic factors (e.g. IGF1) and mediators, such as OSTP, CATD, FMOD LTBP1 and LTBP2, which are involved in angiogenesis and/or extracellular matrix composition. Addition of neutralizing antibodies against IGF‐1, LTBP1 or LTBP2 in the CM of BMMSCs from diabetic rats decreased its stimulatory effect on HUVEC migration by approximately 60%, 40% or 40%, respectively. These results demonstrate that BMMSCs from T2DM rats have a unique secretome with distinct angiogenic properties and provide new insights into the role of BMMSCs in aberrant angiogenesis in the diabetic milieu.
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Affiliation(s)
- Jonathan Ribot
- Laboratory of Bioingénierie et Biomécanique Ostéo-articulaires-UMR CNRS 7052 Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France
| | - Guavri Caliaperoumal
- Laboratory of Bioingénierie et Biomécanique Ostéo-articulaires-UMR CNRS 7052 Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France
| | - Joseph Paquet
- Laboratory of Bioingénierie et Biomécanique Ostéo-articulaires-UMR CNRS 7052 Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France
| | | | - Herve Petite
- Laboratory of Bioingénierie et Biomécanique Ostéo-articulaires-UMR CNRS 7052 Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France
| | - Fani Anagnostou
- Laboratory of Bioingénierie et Biomécanique Ostéo-articulaires-UMR CNRS 7052 Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France.,Department of Periodontology, Service of Odontology, Pitié Salpêtrière Hospital et Hôtel-Dieu Hospital AP-HP, U.F.R. of Odontology Paris 7-Denis Diderot University, Sorbonne Paris Cite, Paris, France
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152
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Suman S, Kumar S, Fornace AJ, Datta K. Space radiation exposure persistently increased leptin and IGF1 in serum and activated leptin-IGF1 signaling axis in mouse intestine. Sci Rep 2016; 6:31853. [PMID: 27558773 PMCID: PMC4997262 DOI: 10.1038/srep31853] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Accepted: 07/28/2016] [Indexed: 12/21/2022] Open
Abstract
Travel into outer space is fraught with risk of exposure to energetic heavy ion radiation such as 56Fe ions, which due to its high linear energy transfer (high-LET) characteristics deposits higher energy per unit volume of tissue traversed and thus more damaging to cells relative to low-LET radiation such as γ rays. However, estimates of human health risk from energetic heavy ion exposure are hampered due to lack of tissue specific in vivo molecular data. We investigated long-term effects of 56Fe radiation on adipokines and insulin-like growth factor 1 (IGF1) signaling axis in mouse intestine and colon. Six- to eight-week-old C57BL/6J mice were exposed to 1.6 Gy of 56Fe ions. Serum and tissues were collected up to twelve months post-irradiation. Serum was analyzed for leptin, adiponectin, IGF1, and IGF binding protein 3. Receptor expressions and downstream signaling pathway alterations were studied in tissues. Irradiation increased leptin and IGF1 levels in serum, and IGF1R and leptin receptor expression in tissues. When considered along with upregulated Jak2/Stat3 pathways and cell proliferation, our data supports the notion that space radiation exposure is a risk to endocrine alterations with implications for chronic pathophysiologic changes in gastrointestinal tract.
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Affiliation(s)
- Shubhankar Suman
- Department of Biochemistry and Molecular &Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Santosh Kumar
- Department of Biochemistry and Molecular &Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
| | - Albert J Fornace
- Department of Biochemistry and Molecular &Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA.,Center of Excellence in Genomic Medicine Research (CEGMR), King Abdulaziz University, Jeddah, Saudi Arabia
| | - Kamal Datta
- Department of Biochemistry and Molecular &Cellular Biology and Lombardi Comprehensive Cancer Center, Georgetown University, Washington, DC 20057, USA
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153
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Waseem M, Khan I, Iqbal H, Eijaz S, Usman S, Ahmed N, Alam G, Salim A. Hypoxic Preconditioning Improves the Therapeutic Potential of Aging Bone Marrow Mesenchymal Stem Cells in Streptozotocin-Induced Type-1 Diabetic Mice. Cell Reprogram 2016; 18:344-355. [PMID: 27500307 DOI: 10.1089/cell.2016.0002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Insulin replacement is the current therapeutic option for type-1 diabetes. However, exogenous insulin cannot precisely represent the normal pattern of insulin secretion. Another therapeutic strategy is transplantation of pancreatic islets, but this is limited by immune rejection, intrinsic complications, and lack of donor availability. Stem cell therapy that results in the regeneration of insulin-producing cells represents an attractive choice. However, with advancing age, stem cells also undergo senescence, which leads to changes in the function of various cellular processes that result in a decrease in the regeneration potential of these aging stem cells. In this study, the effect of young and aging mesenchymal stem cells (MSCs) on the regeneration of pancreatic beta cells in streptozotocin (STZ)-induced type-1 diabetic mice was observed after hypoxic preconditioning. Hypoxia was chemically induced by 2, 4-dinitrophenol (DNP). Plasma insulin and glucose levels were measured at various time intervals, and pancreatic sections were analyzed histochemically. The effect of DNP was also analyzed on apoptosis of MSCs by flow cytometry and on gene expression of certain growth factors by quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR). We observed that hypoxic preconditioning caused changes in the gene expression levels of growth factors in both young and aging MSCs. Young MSCs showed significant regeneration potential compared with the aging cells in vivo. However, hypoxic preconditioning was able to improve the regeneration potential of aging MSCs. It is concluded from the present study that the regeneration potential of aging MSCs into pancreatic β-cells can be enhanced by hypoxic preconditioning, which causes changes in the gene expression of certain growth factors.
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Affiliation(s)
- Muhammad Waseem
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Irfan Khan
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Hana'a Iqbal
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Sana Eijaz
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Shumaila Usman
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Nazia Ahmed
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Gulzar Alam
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
| | - Asmat Salim
- Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences (ICCBS), University of Karachi , Karachi, Pakistan
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154
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Feng CC, Lin CC, Lai YP, Chen TS, Marthandam Asokan S, Lin JY, Lin KH, Viswanadha VP, Kuo WW, Huang CY. Hypoxia suppresses myocardial survival pathway through HIF-1α-IGFBP-3-dependent signaling and enhances cardiomyocyte autophagic and apoptotic effects mainly via FoxO3a-induced BNIP3 expression. Growth Factors 2016; 34:73-86. [PMID: 27366871 DOI: 10.1080/08977194.2016.1191480] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The HIF-1α transcriptional factor and the BH-3 only protein BNIP3 are known to play fundamental roles in response to hypoxia. The objective of this research is to investigate the molecular mechanisms and the correlation of HIF-1α, BNIP3 and IGFBP-3 in hypoxia-induced cardiomyocytes injuries. Heart-derived H9c2 cells and neonatal rat ventricular myocytes (NRVMs) were incubated in normoxic or hypoxic conditions. Hypoxia increased HIF-1α expression and activated the downstream BNIP3 and IGFBP-3 thereby triggered mitochondria-dependent apoptosis. Moreover, IGF1R/PI3K/Akt signaling was attenuated by HIF-1α-dependent IGFBP-3 expression to enhance hypoxia-induced apoptosis. Autophagy suppression with 3-methyladenine or siATG5 or siBeclin-1 significantly decreased myocardial apoptosis under hypoxia. Knockdown of FoxO3a or BNIP3 significantly abrogated hypoxia-induced autophagy and mitochondria-dependent apoptosis. Moreover, prolonged-hypoxia induced HIF-1α stimulated BNIP3 and enhanced IGFBP-3 activation to inhibit IGF1R/PI3K/Akt survival pathway and mediate mitochondria-dependent cardiomyocyte apoptosis. HIF-1α and FoxO3a blockage are sufficient to annul the change of excessive hypoxia of hearts.
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Affiliation(s)
- Chih-Chung Feng
- a Graduate Institute of Clinical Medical Science, Graduate Institute of Basic Medical Science, China Medical University , Taichung , Taiwan
| | - Chien-Chung Lin
- b Orthopaedic Department, Armed Forces General Hospital , Taichung , Taiwan
| | - Yi-Ping Lai
- c Graduate Institute of Basic Medical Science, China Medical University , Taichung , Taiwan
| | - Tung-Sheng Chen
- c Graduate Institute of Basic Medical Science, China Medical University , Taichung , Taiwan
- d Biomaterials Translational Research Center, China Medical University Hospital , Taichung , Taiwan
| | | | - Jing-Ying Lin
- e Department of Nursing , Central Taiwan University of Science and Technology , Taichung , Taiwan
| | - Kuan-Ho Lin
- f Emergency Department, China Medical University Hospital , Taichung , Taiwan
| | | | - Wei-Wen Kuo
- h Department of Biological Science and Technology , China Medical University , Taichung , Taiwan
| | - Chih-Yang Huang
- c Graduate Institute of Basic Medical Science, China Medical University , Taichung , Taiwan
- i Graduate Institute of Chinese Medical Science, China Medical University , Taichung , Taiwan , and
- j Department of Health and Nutrition Biotechnology , Asia University , Taichung , Taiwan
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155
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Akin D, Ozmen S, Kaya R. A novel factor for primary arteriovenous fistula failure: hyperinsulinism. Ren Fail 2016; 38:1206-9. [PMID: 27466042 DOI: 10.1080/0886022x.2016.1209061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
INTRODUCTION Dysfunction of vascular access is an important reason of morbidity for dialysis patients and it is a major factor affecting the economical burden of hemodialysis. The preferred type of vascular access is creation of an arteriovenous fistula (AVF). However, the problem of fistula maturation rate is still a challenge. Herein, we tried to search the role of hyperinsulinism and insulin resistance as a new predictor of primary AVF failure (pAVFF) that may be a cause of intimal damage. METHODS We included 119 patients (73 male and 46 female) with a diagnosis of end-stage renal disease (ESRD) who had undergone an AVF operation by a vascular surgeon. The AVF was examined for presence of thrill on the first postoperative day. A successful cannulation with two fistula needles with a blood flow of 250 mL/min for at least one complete dialysis session, after 4 weeks of AVF surgery was defined as functioning access. Insulin resistance in our patients was determined by the standard homeostasis model assessment (homa-IR). A logistic-regression analysis was performed to investigate the independent factors related with pAVFF. FINDINGS Detection of pAVFF occurred in 27 (22.7%) patients. The presence of thrill, amount of daily proteinuria, insulin levels, homa-IR, and serum albumin levels were found to be significantly different between patients with fistula failure and those without pAVFF. The logistic-regression analysis of preoperative factors revealed the following OR (odds ratio) and 95% CI values: homa-IR 1.205 (1.063-1.366) (p = 0.004), serum albumin 0.398 (0.178-0.892) (p = 0.025), and the amount of daily proteinuria 1.307 (1.012-1.688) (p = 0.041). Even after addition of the presence of postoperative thrill on AVF, which was a postoperative strong clinical factor to the analysis, mean homa-IR and mean serum albumin continued to be independent predictors of pAVFF. DISCUSSION Insulin resistance or hyperinsulinism may be a significant cause of pAVFF, which emphasizes the role of endothelium in fistula dysfunction.
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Affiliation(s)
- Davut Akin
- a Denizli State Hospital, Nephrology , Denizli , Turkey
| | - Sehmus Ozmen
- b School of Health, Artuklu University , Mardin , Turkey ;,c Division of Nephrology , Diyarbakır Training Hospital , Diyarbakir , Turkey
| | - Ramazan Kaya
- d Department of Internal Medicine , Nusaybin State Hospital , Mardin , Turkey
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156
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Atef ME, Anand-Srivastava MB. Role of PKCδ in Enhanced Expression of Gqα/PLCβ1 Proteins and VSMC Hypertrophy in Spontaneously Hypertensive Rats. PLoS One 2016; 11:e0157955. [PMID: 27379421 PMCID: PMC4933357 DOI: 10.1371/journal.pone.0157955] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 06/06/2016] [Indexed: 02/07/2023] Open
Abstract
Gqα signaling has been implicated in cardiac hypertrophy. In addition, angiotensin II (Ang II) was also shown to induce its hypertrophic effect through Gqα and PKCδ activation. We recently showed the role of enhanced expression of Gqα/PLCβ1 proteins in vascular smooth muscle cell (VSMC) hypertrophy, however, the role of PKCδ in VSMC hypertrophy in animal model is still lacking. The present study was therefore undertaken to examine the role of PKCδ and the associated signaling mechanisms in VSMC hypertrophy using 16-week-old spontaneously hypertensive rats (SHR). VSMC from 16-week-old SHR exhibited enhanced phosphorylation of PKCδ-Tyr311 and increased protein synthesis, marker of hypertrophy, as compared to WKY rats which was attenuated by rottlerin, an inhibitor of PKCδ. In addition, knocking down of PKCδ by PKCδ-siRNA also attenuated enhanced protein synthesis in VSMC from SHR. Furthermore, rottlerin attenuated the increased production of superoxide anion, NAD(P)H oxidase activity, increased expression of Gqα, phospholipase C (PLC)β1, insulin like growth factor-1 receptor (IGF-1R) and epidermal growth factor receptor (EGFR) proteins in VSMC from SHR. In addition, the enhanced phosphorylation of c-Src, PKCδ-Tyr311, IGF-1R, EGFR and ERK1/2 exhibited by VSMC from SHR was also attenuated by rottlerin. These results suggest that VSMC from SHR exhibit enhanced activity of PKCδ and that PKCδ is the upstream molecule of reactive oxygen species (ROS) and contributes to the enhanced expression of Gqα and PLCβ1 proteins and resultant VSMC hypertrophy involving c-Src, growth factor receptor transactivation and MAP kinase signaling.
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MESH Headings
- Acetophenones/pharmacology
- Animals
- Benzopyrans/pharmacology
- Blotting, Western
- Cells, Cultured
- Enzyme Inhibitors/pharmacology
- GTP-Binding Protein alpha Subunits, Gq-G11/metabolism
- Hypertrophy
- Mitogen-Activated Protein Kinases/metabolism
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/pathology
- Myocytes, Smooth Muscle/metabolism
- Myocytes, Smooth Muscle/pathology
- NADPH Oxidases/metabolism
- Phospholipase C beta/metabolism
- Phosphorylation/drug effects
- Protein Kinase C-delta/genetics
- Protein Kinase C-delta/metabolism
- Proto-Oncogene Proteins pp60(c-src)/metabolism
- RNA Interference
- Rats, Inbred SHR
- Rats, Inbred WKY
- Receptors, Growth Factor/metabolism
- Species Specificity
- Superoxides/metabolism
- Tyrosine/genetics
- Tyrosine/metabolism
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Affiliation(s)
- Mohammed Emehdi Atef
- Department of Molecular and Integrative Physiology, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
| | - Madhu B. Anand-Srivastava
- Department of Molecular and Integrative Physiology, Faculty of Medicine, University of Montreal, Montreal, Quebec, Canada
- * E-mail:
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157
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Wang J, Cao W, Niu F. Adenoviral vector expressing IGF-1 protects murine chondrogenic ATDC5 cells against hydrogen peroxide-induced mitochondrial dysfunction and apoptosis. J Toxicol Sci 2016; 40:585-95. [PMID: 26354375 DOI: 10.2131/jts.40.585] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Insulin-like growth factor-1 (IGF-1), with an age-related decline, regulates the proliferation and survival of multiple cell types, particularly stimulates cartilage matrix synthesis, and inhibits matrix degradation. The present study was to investigate the regulatory role of IGF-1 against hydrogen peroxide(H2O2)-induced mitochondrial dysfunction and apoptosis in murine chondrocytic ATDC5 cells. We firstly determined mitochondrial dysfunction and apoptosis in ATDC5 cells which were exposed to H2O2. We then constructed an IGF-1-overexpressed adenovirus (IGF-1-Ad) harboring the IGF-1 coding sequence, and investigated the regulatory role of the overexpressed IGF-1 against the H2O2-induced mitochondrial dysfunction and apoptosis in ATDC5 cells. It was demonstrated that H2O2 treatment promoted the mitochondrial dysfunction, and further reduced the viability and induced apoptosis of ATDC5 cells. However, the IGF-1 overexpression by adenovirus inhibited the H2O2-induced mitochondrial dysfunction and further inhibited the H2O2-promoted apoptosis in ATDC5 cells. In conclusion, the present study found that oxidative stress promoted mitochondrial dysfunction and induced apoptosis in the murine chondrocytic ATDC5 cells, and the adenoviral vector-expressed IGF-1 protected the murine chondrocytic ATDC5 cells against such mitochondrial dysfunction and apoptosis. This study implies the protective role of IGF-1 against the oxidative stress in murine chondrocytic ATDC5 cells and demonstrates the promising anti-oxidative stress effect of the recombinant IGF-1-Ad against oxidative stress in chondrocytic cells.
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Affiliation(s)
- Jinfeng Wang
- Department of Orthopaedics, Tianjin 4th Centre Hospital, China
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158
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Abstract
Reactive oxygen species (ROS) and oxidative stress have long been linked to aging and diseases prominent in the elderly such as hypertension, atherosclerosis, diabetes and atrial fibrillation (AF). NADPH oxidases (Nox) are a major source of ROS in the vasculature and are key players in mediating redox signalling under physiological and pathophysiological conditions. In this review, we focus on the Nox-mediated ROS signalling pathways involved in the regulation of 'longevity genes' and recapitulate their role in age-associated vascular changes and in the development of age-related cardiovascular diseases (CVDs). This review is predicated on burgeoning knowledge that Nox-derived ROS propagate tightly regulated yet varied signalling pathways, which, at the cellular level, may lead to diminished repair, the aging process and predisposition to CVDs. In addition, we briefly describe emerging Nox therapies and their potential in improving the health of the elderly population.
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159
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Dello Russo P, Demori E, Sechi A, Passon N, Romagno D, Gnan C, Zoratti R, Damante G. Microdeletion 15q26.2qter and Microduplication 18q23 in a Patient with Prader-Willi-Like Syndrome: Clinical Findings. Cytogenet Genome Res 2016; 148:14-8. [PMID: 27160288 DOI: 10.1159/000445923] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/22/2016] [Indexed: 11/19/2022] Open
Abstract
The small interstitial deletion in the long arm of chromosome 15 causing Prader-Willi/Angelman syndrome is well known, whereas cases that report terminal deletions in 15q in association with the Prader-Willi-like phenotype are very rare. By using GTG-banding analysis, metaphase FISH, MLPA analysis, and genome-wide array CGH, we detected an unbalanced translocation involving a microdeletion of the distal part of 15q and a microduplication of the distal part of 18q. The unbalanced translocation was found in a boy that was referred with clinical suspicion of Prader-Willi syndrome. In the 15q-deleted region, 23 genes have been identified, and 13 of them are included in the OMIM database. Among these, the deleted IGFR1, MEF2A, CHSY1, and TM2D3 genes could contribute to the patient's phenotype. Seven genes are included in the duplicated chromosome segment 18q, but only one (CTDP1) is present in the OMIM database. We suggest that the deleted chromosome segment 15q26.2qter may be responsible for the phenotype of our case and may also be a candidate locus of Prader-Willi-like syndrome.
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Affiliation(s)
- Patrizia Dello Russo
- Dipartimento di Medicina di Laboratorio, Azienda Ospedaliero-Universitaria S. Maria della Misericordia, Udine, Italy
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160
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Sävendahl L, Pournara E, Pedersen BT, Blankenstein O. Is safety of childhood growth hormone therapy related to dose? Data from a large observational study. Eur J Endocrinol 2016; 174:681-91. [PMID: 26903552 DOI: 10.1530/eje-15-1017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/22/2016] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Concerns have been raised of increased mortality risk in adulthood in certain patients who received growth hormone treatment during childhood. This study evaluated the safety of growth hormone treatment in childhood in everyday practice. DESIGN NordiNet(®) International Outcome Study (IOS) is a noninterventional, observational study evaluating safety and effectiveness of Norditropin(®) (somatropin; Novo Nordisk A/S, Bagsvaerd, Denmark). METHODS Long-term safety data (1998-2013) were collected on 13 834 growth hormone treated pediatric patients with short stature. Incidence rates (IRs) of adverse events (AEs) defined as adverse drug reactions (ADRs), serious ADRs (SADRs), and serious AEs (SAEs) were calculated by mortality risk group (low/intermediate/high). The effect of growth hormone dose on IRs and the occurrence of cerebrovascular AEs were investigated by the risk group. RESULTS We found that 61.0% of patients were classified as low-risk, 33.9% intermediate-risk, and 5.1% high-risk. Three hundred and two AEs were reported in 261 (1.9%) patients during a mean (s.d.) treatment duration of 3.9 (2.8) years. IRs were significantly higher in the high- vs the low-risk group (high risk vs low risk-ADR: 9.11 vs 3.14; SAE: 13.66 vs 1.85; SADR: 4.97 vs 0.73 events/1000 patient-years of exposure; P < 0.0001 for all). Except for SAEs in the intermediate-risk group (P = 0.0486) in which an inverse relationship was observed, no association between IRs and growth hormone dose was found. No cerebrovascular events were reported. CONCLUSIONS We conclude that safety data from NordiNet(®) IOS do not reveal any new safety signals and confirm a favorable overall safety profile in accordance with other pediatric observational studies. No association between growth hormone dose and the incidence of AEs during growth hormone treatment in childhood was found.
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Affiliation(s)
- Lars Sävendahl
- Department of Women's and Children's HealthKarolinska Institutet and Pediatric Endocrinology Unit, Karolinska University Hospital, SE-171 76 Stockholm, Sweden
| | - Effie Pournara
- Global Medical AffairsNovo Nordisk Health Care AG, 8050 Zurich, Switzerland
| | | | - Oliver Blankenstein
- Institute for Experimental Pediatric EndocrinologyCharité-University Medicine Berlin, 13353 Berlin, Germany
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161
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Zatorski H, Marynowski M, Fichna J. Is insulin-like growth factor 1 (IGF-1) system an attractive target inflammatory bowel diseases? Benefits and limitation of potential therapy. Pharmacol Rep 2016; 68:809-15. [PMID: 27117379 DOI: 10.1016/j.pharep.2016.03.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 02/12/2016] [Accepted: 03/04/2016] [Indexed: 01/26/2023]
Abstract
Inflammatory bowel diseases (IBD) are chronic gastrointestinal disorders with unknown etiology, whose incidence dramatically increased over the past 50 years. Currently available strategies for IBD treatment, such as biological therapies, corticosteroids, and immunosuppressive agents are effective, but their side effects and economic costs cannot be ignored. Better understanding of IBD etiology and new therapeutics are thus needed. The aim of this paper is to briefly discuss IGF-1 dependent functions, with particular focus on IGF-1 use in IBD therapy. Data collection was based on records found in medical literature. Data analysis included records published between 1984 and 2014. The IGF-1 system is involved in major physiological functions, such as cell proliferation and metabolism, and growth promotion. Most importantly IGF-1 has anti-inflammatory properties and its use in IBD treatment can be recommended. However, potential IGF-1 therapy has some limitations, which include aggravation of fibrosis in Crohn's patients and facilitated transformation to malignancy. Taken into consideration their possible side effects, IGF-1 analogs and recombinants are nonetheless a promising target for IBD therapy for a specific group of patients. Further studies, at the clinical level are thus recommended.
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Affiliation(s)
- Hubert Zatorski
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Łódź, Poland
| | - Mateusz Marynowski
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Łódź, Poland
| | - Jakub Fichna
- Department of Biochemistry, Faculty of Medicine, Medical University of Lodz, Łódź, Poland.
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162
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Kınay T, Öztürk Başarır Z, Fırtına Tuncer S, Akpınar F, Kayıkçıoğlu F, Koç S. Prevalence of endometrial polyps coexisting with uterine fibroids and associated factors. Turk J Obstet Gynecol 2016; 13:31-36. [PMID: 28913086 PMCID: PMC5558353 DOI: 10.4274/tjod.36043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Accepted: 02/19/2016] [Indexed: 12/01/2022] Open
Abstract
OBJECTIVE The aim of the study was to investigate the prevalence of endometrial polyps in patients with uterine fibroids and associated factors of coexistence of these two pathologies. MATERIALS AND METHODS The medical records of 772 patients who underwent hysterectomy because of uterine fibroids were retrospectively reviewed. Patients were divided into two groups according to the presence of endometrial polyps in the histopathologic examination. Demographic, clinical and histopathologic findings of the patients with and without endometrial polyps were compared. Student's t-test, Mann-Whitney U test, Pearson's Chi-square test, and logistic regression analysis were used for statistical analysis. RESULTS The prevalence of the endometrial polyps in uterine fibroid cases was found 20.1% (n=155). Age ≥45 years (odds ratio [OR] 1.61; 95% confidence interval [CI]: [1.06-2.44]; p=0.014), presence of hypertension (23.9% vs. 17.5%; p=0.047), endometrial hyperplasia (OR 4.00; 95% CI: [1.92-8.33]; p<0.001) and cervical polyps (OR 3.13; 95% CI: [1.69-5.88]; p<0.001) were significantly associated with the coexistence of endometrial polyps and uterine fibroids. Endometrial polyps were more common in patients with ≥2 fibroids (p=0.023) and largest fibroid <8 cm (p=0.009). A negative correlation was found between condom use and endometrial polyps (8.1% vs. 3.9%; p=0.044). CONCLUSIONS The prevalence of the endometrial polyps coexisting with uterine fibroids was 20.1%. Age, hypertension, endometrial hyperplasia, cervical polyps, and number of fibroids were positively correlated; condom use and size of largest fibroid were negatively correlated with the coexistence of these two pathologies.
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Affiliation(s)
- Tuğba Kınay
- Etlik Zübeyde Hanım Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
| | - Zehra Öztürk Başarır
- Zekai Tahir Burak Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
| | - Serap Fırtına Tuncer
- Etlik Zübeyde Hanım Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
| | - Funda Akpınar
- Etlik Zübeyde Hanım Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
| | - Fulya Kayıkçıoğlu
- Etlik Zübeyde Hanım Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
| | - Sevgi Koç
- Etlik Zübeyde Hanım Women’s Health Training and Research Hospital, Clinic of Obstetrics and Gynecology, Ankara, Turkey
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163
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Walsh JJ, Scribbans TD, Bentley RF, Kellawan JM, Gurd B, Tschakovsky ME. Neurotrophic growth factor responses to lower body resistance training in older adults. Appl Physiol Nutr Metab 2016; 41:315-23. [DOI: 10.1139/apnm-2015-0410] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Resistance exercise is an efficacious stimulus for improving cognitive function in older adults, which may be mediated by the upregulation of blood-borne neurotrophic growth factors (NTFs) like brain-derived neurotrophic factor (BDNF) and insulin-like growth factor-1 (IGF-1). However, the NTF response to resistance exercise and training in older adults is poorly understood. Therefore, the purpose of this study was to characterize the timing and magnitude of the NTF response following an acute bout of resistance exercise before and after 8 weeks of resistance training. Ten cognitively normal, older adults (ages 60–77 years, five men) were examined. The acute NTF response to resistance exercise was assessed via serum samples drawn at designated time points following exercise. This procedure was then repeated following 8 weeks of resistance training. BDNF increased immediately post-exercise (Δ9% pre-training, Δ11% post-training) then returned to resting levels while IGF-1 remained stable following resistance exercise before and after 8 weeks of resistance training. Basal levels of both NTFs were unaffected by the 8 week training period. We report a transient increase in serum BDNF following a bout of resistance exercise in older adults, which could have implications for the design of interventions seeking to maximize cognitive function in older adults.
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Affiliation(s)
- Jeremy J. Walsh
- School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada
| | - Trisha D. Scribbans
- School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada
| | - Robert F. Bentley
- School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada
| | | | - Brendon Gurd
- School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada
| | - Michael E. Tschakovsky
- School of Kinesiology and Health Studies, Queen’s University, 28 Division St., Kingston, ON K7L 3N6, Canada
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164
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Farahani RK, Azimzadeh P, Rostami E, Malekpour H, Aghdae HA, Pourhoseingholi MA, Nazemalhosseini Mojarad E, Zali MR. Evaluation of insulin like growth facror-1 genetic polymorphism with gastric cancer susceptibility and clinicopathological features. Asian Pac J Cancer Prev 2016; 16:4215-8. [PMID: 26028075 DOI: 10.7314/apjcp.2015.16.10.4215] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Gastric cancer (GC) is one of the most common malignancies in the world. It is the first cause of cancer deaths in both sexes In Iranian population. Circulating insulin-like growth factor-one (IGF-1) levels have been associated for gastric cancer. IGF-1 protein has central roles involved in the regulation of epithelial cell growth, proliferation, transformation, apoptosis and metastasis. Single nucleotide polymorphism in IGF-1 regulatory elements may lead to alter in IGF-1 expression level and GC susceptibility. The aim of this study was to investigate the influence of IGF-1 gene polymorphism (rs5742612) on risk of GC and clinicopathological features for the first time in Iranian population. In total, 241 subjects including 100 patients with GC and 141 healthy controls were recruited in our study. Genotypes were analyzed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay with DNA from peripheral blood. The polymorphism was statistically analyzed to investigate the relationship with the risk of GC and clinicopathological properties. Logistic regression analysis revealed that there was no significant association between rs5742612 and the risk of GC. In addition, no significant association between genotypes and clinicopathological features was observed (p value>0.05). The frequencies of the CC, CT, and TT genotypes were 97%, 3%, and 0%, respectively, among the cases, and 97.9%, 2.1%, and 0%, respectively, among the controls. CC genotype was more frequent in cases and controls. The frequencies of C and T alleles were 98.9% and 1.1% in controls and 98.5% and 1.5% in patient respectively. Our results provide the first evidence that this variant is rare in Iranian population and it may not be a powerful genetic predisposing biomarker for prediction GC clinicopathological features in an Iranian population.
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Affiliation(s)
- Roya Kishani Farahani
- Basic and Molecular Epidemiology of Gastroenterology, Disease Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran E-mail :
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165
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Fierro-Macías AE, Floriano-Sánchez E, Mena-Burciaga VM, Gutiérrez-Leonard H, Lara-Padilla E, Abarca-Rojano E, Fierro-Almanzán AE. [Association between IGF system and PAPP-A in coronary atherosclerosis]. ARCHIVOS DE CARDIOLOGIA DE MEXICO 2016; 86:148-56. [PMID: 26906607 DOI: 10.1016/j.acmx.2015.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Revised: 12/23/2015] [Accepted: 12/24/2015] [Indexed: 11/28/2022] Open
Abstract
Atherosclerosis is a condition that involves multiple pathophysiological mechanisms and whose knowledge has not been fully elucidated. Often, scientific advances on the atherogenic pathophysiology generate that molecules not previously considered in the scene of this disease, were attributed actions on the onset or progression of it. A representative example is the study of a new mechanism involved in the atherogenic process, consisting of the association between the insulin-like growth factor (IGF) system and pregnancy-associated plasma protein-A (PAPP-A). Insulin-like growth factor system is a family of peptides that include 3 peptide hormones, 4 transmembrane receptors and 6 binding proteins. Insulin-like growth factor-1 (IGF-1) is the main ligand of the IGF system involved in coronary atherosclerosis. IGF-1 exerts its effects via activation of the IGF-1R receptor on vascular smooth muscle cells or macrophages. In vascular smooth muscle cells promotes migration and prevents apoptosis which increases plaque stability while in macrophages reduces reverse cholesterol transport leading to the formation of foam cells. Regulation of IGF-1 endothelial bioavailability is carried out by IGFBP proteases, mainly by PAPP-A. In this review, we address the mechanisms between IGF system and PAPP-A in atherosclerosis with emphasis on molecular effects on vascular smooth muscle cells and macrophages.
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Affiliation(s)
- Alfonso Eduardo Fierro-Macías
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, DF, México.
| | - Esaú Floriano-Sánchez
- Laboratorio Multidisciplinario de Investigación, Escuela Militar de Graduados de Sanidad, Secretaría de la Defensa Nacional (SEDENA), México, DF, México
| | - Victoria Michelle Mena-Burciaga
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, DF, México
| | - Hugo Gutiérrez-Leonard
- Departamento de Hemodinamia, Hospital Central Militar, Secretaría de la Defensa Nacional (SEDENA), México, DF, México
| | - Eleazar Lara-Padilla
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, DF, México
| | - Edgar Abarca-Rojano
- Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina, Instituto Politécnico Nacional, México, DF, México
| | - Alfonso Edmundo Fierro-Almanzán
- Departamento de Cirugía, Hospital General Regional N.(o) 66, Instituto Mexicano del Seguro Social (IMSS), Ciudad Juárez, Chihuahua, México
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166
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Otunctemur A, Ozbek E, Sahin S, Ozcan L, Dursun M, Polat EC, Cekmen M, Ozsoy OD, Erkoc M, Danis E, Bozkurt M. Low serum insulin-like growth factor-1 in patients with erectile dysfunction. Basic Clin Androl 2016; 26:1. [PMID: 26823979 PMCID: PMC4730635 DOI: 10.1186/s12610-015-0028-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Accepted: 12/18/2015] [Indexed: 01/28/2023] Open
Abstract
OBJECTIVE Endothelial dysfunction and microvascular damage play a crurical role in the pathogenesis of erectile dysfunction (ED). Insulin-like growth factor-1 (IGF-1) is one of the growth factors that have a wide range of biologic effects. IGF-1 is an important mediator of cell growth, differentiation and transformation in various tissues. The purpose of the current study was to determine the association between IGF-1 levels and ED. MATERIALS AND METHODS All men were evaluated for ED and divided into two groups: 80 patients suffering from ED for > 1 year and 80 subjects without ED were enrolled as a control group in this study. Diagnosis of ED was based on the International Index of Erectile Function Score-5. IGF-1 levels were measured in serum by an automated chemiluminescence immunoassay. The relationship between IGF-1 levels and ED scores in patients was statistically evaluated. RESULTS The mean age of patients in ED group was 60.4 ± 11.3 years and 55.4 ± 9.6 in control group. The plasma IGF-1 levels were significantly lower in ED than in control group (96.5 ± 38.3 and 132.5 ± 53.3 ng/ mL, respectively, P < 0.001). The IGF-1 levels were positively correlated with ED score (r = 0.623, P < 0.01). CONCLUSION In this study serum IGF-1 levels were found to be associated with endothelial dysfunction that predicts ED. Serum IGF-1 level appears to be a specific predictor of ED, and it might be used in early prediction of ED in male population.
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Affiliation(s)
- Alper Otunctemur
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Emin Ozbek
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Suleyman Sahin
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Levent Ozcan
- Department of Urology, Derince Training and Research Hospital, Kocaeli, Turkey
| | - Murat Dursun
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Emre Can Polat
- Department of Urology, Istanbul Medipol University, School of Medicine, Istanbul, Turkey
| | - Mustafa Cekmen
- Department of Biochemistry, Kocaeli University, School of Medicine, Kocaeli, Turkey
| | - Ozgur Doga Ozsoy
- Department of Biochemistry, Kocaeli University, School of Medicine, Kocaeli, Turkey
| | - Mustafa Erkoc
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Eyup Danis
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
| | - Muammer Bozkurt
- Department of Urology, Okmeydani Training and Research Hospital, Istanbul, Turkey
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167
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IGF-1 as an Important Endogenous Growth Factor for Recovery from Impaired Urethral Continence Function in Rats with Simulated Childbirth Injury. J Urol 2016; 195:1927-35. [PMID: 26767520 DOI: 10.1016/j.juro.2015.12.087] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/27/2015] [Indexed: 11/22/2022]
Abstract
PURPOSE We examined the functional role of endogenous IGF-1 (insulin-like growth factor-1) in the recovery phase of stress urinary incontinence induced by simulated childbirth trauma using an IGF-1 receptor inhibitor. MATERIALS AND METHODS Simulated birth trauma was induced by vaginal distension in female Sprague Dawley® rats. The IGF-1 receptor antagonist JB-1 (10 and 100 μg/kg per day) or vehicle was continuously delivered from 1 day before vaginal distension for 7 days using subcutaneous osmotic pumps. Seven, 14 and 21 days after vaginal distension the effect of JB-1 treatment was examined by functional analyses, including leak point and urethral baseline pressure, and urethral responses during passive increments in intravesical pressure, as well as molecular analyses in urethral tissues, including phosphorylation of Akt, apoptotic changes and peripheral nerve density using Western blot and immunohistochemistry. RESULTS On functional analyses vehicle treated rats with vaginal distension had significantly decreased leak point and urethral baseline pressure, and urethral responses at 7 days, which recovered to the normal level 14 and 21 days after vaginal distension. In the JB-1 treated vaginal distension group leak point and urethral baseline pressure, and urethral responses were still significantly reduced 21 days after vaginal distension. On molecular analyses JB-1 treatment increased apoptotic cells, induced a significant decrease in phosphorylated Akt and prolonged the decrease of peripheral nerve density in urethral tissues. CONCLUSIONS Suppression of endogenous IGF-1 activity delayed recovery from stress urinary incontinence induced by simulated childbirth trauma in rats. Thus, IGF-1 is likely to be an important endogenous mediator for functional recovery from childbirth related stress urinary incontinence. This suggests that IGF-1 could be an effective target for treating stress urinary incontinence in women.
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168
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Zhou ZY, Cheng SP, Huang H, Sun YL, Xiao S, Liu RH, Mao FJ, Zhong GJ, Huang JB, Pan H. Decrease of the insulin-like growth factor-1 bioavailability in spontaneously hypertensive rats with erectile dysfunction. Andrologia 2016; 48:824-8. [PMID: 26762757 DOI: 10.1111/and.12518] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2015] [Indexed: 11/30/2022] Open
Abstract
We investigated the role of insulin-like growth factor-1 (IGF-1) in spontaneously hypertensive rats with erectile dysfunction. Firstly, we evaluated intracavernous pressure. The bioavailability of IGF-1 at both mRNA and protein levels were measured by quantitative real-time PCR and Western blot respectively. Then, cavernous cyclic guanosine monophosphate concentrations were detected by enzyme-linked immunosorbent assay. The cavernosal pressure was significantly decreased in the hypertensive and the propranolol treatment groups compared to the normal control group (P < 0.01). Cavernous IGF-1 bioavailability and the concentrations of cavernous cyclic guanosine monophosphate were both significantly decreased in the hypertensive and the propranolol treatment groups compared to the normal control group (P < 0.01). This study suggests that an obvious decrease in cavernous IGF-1 levels might play an important role in spontaneously hypertensive rats with erectile dysfunction.
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Affiliation(s)
- Z-Y Zhou
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - S-P Cheng
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - H Huang
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - Y-L Sun
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - S Xiao
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - R-H Liu
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - F-J Mao
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - G-J Zhong
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - J-B Huang
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
| | - H Pan
- Department of Urology, First Affiliated Hospital of Yangtze University, Jingzhou, HuBei, China
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170
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Intrauterine Growth Retardation (IUGR) as a Novel Condition of Insulin-Like Growth Factor-1 (IGF-1) Deficiency. Rev Physiol Biochem Pharmacol 2016; 170:1-35. [DOI: 10.1007/112_2015_5001] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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171
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Function of Membrane-Associated Proteoglycans in the Regulation of Satellite Cell Growth. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 900:61-95. [DOI: 10.1007/978-3-319-27511-6_4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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172
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Hoke GD, Ramos C, Hoke NN, Crossland MC, Shawler LG, Boykin JV. Atypical Diabetic Foot Ulcer Keratinocyte Protein Signaling Correlates with Impaired Wound Healing. J Diabetes Res 2016; 2016:1586927. [PMID: 27840833 PMCID: PMC5093264 DOI: 10.1155/2016/1586927] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Revised: 09/20/2016] [Accepted: 09/25/2016] [Indexed: 11/18/2022] Open
Abstract
Diabetes mellitus is associated with chronic diabetic foot ulcers (DFUs) and wound infections often resulting in lower extremity amputations. The protein signaling architecture of the mechanisms responsible for impaired DFU healing has not been characterized. In this preliminary clinical study, the intracellular levels of proteins involved in signal transduction networks relevant to wound healing were non-biasedly measured using reverse-phase protein arrays (RPPA) in keratinocytes isolated from DFU wound biopsies. RPPA allows for the simultaneous documentation and assessment of the signaling pathways active in each DFU. Thus, RPPA provides for the accurate mapping of wound healing pathways associated with apoptosis, proliferation, senescence, survival, and angiogenesis. From the study data, we have identified potential diagnostic, or predictive, biomarkers for DFU wound healing derived from the ratios of quantified signaling protein expressions within interconnected pathways. These biomarkers may allow physicians to personalize therapeutic strategies for DFU management on an individual basis based upon the signaling architecture present in each wound. Additionally, we have identified altered, interconnected signaling pathways within DFU keratinocytes that may help guide the development of therapeutics to modulate these dysregulated pathways, many of which parallel the therapeutic targets which are the hallmarks of molecular therapies for treating cancer.
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Affiliation(s)
- Glenn D. Hoke
- Theranostics Health, Inc., Gaithersburg, MD 20877, USA
| | - Corrine Ramos
- Theranostics Health, Inc., Gaithersburg, MD 20877, USA
| | | | - Mary C. Crossland
- HCA Chippenham Medical Center, Wound Healing Center, Richmond, VA 23235, USA
| | - Lisa G. Shawler
- HCA Chippenham Medical Center, Wound Healing Center, Richmond, VA 23235, USA
| | - Joseph V. Boykin
- HCA Retreat Doctors' Hospital, Wound Healing Center, Richmond, VA 23220, USA
- *Joseph V. Boykin:
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173
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Li Y, Wang X. Role of long noncoding RNAs in malignant disease (Review). Mol Med Rep 2015; 13:1463-9. [PMID: 26708950 DOI: 10.3892/mmr.2015.4711] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2015] [Accepted: 11/24/2015] [Indexed: 11/06/2022] Open
Abstract
Long noncoding RNAs (lncRNAs) are endogenous transcribed RNA molecules without protein-coding potential, ranging between 200 and 100,000 nt in length. LncRNAs regulate the expression of specific genes in several ways, including guiding chromatin-remodeling, and affecting splicing, transcription or translation. The mutations and dysregulation of lncRNAs have been found to be important in various human diseases, but particularly in human cancer. Previous studies have demonstrated that changes to lncRNAs are closely associated with tumorigenesis, metastasis, prognosis and diagnosis. The current review aims to present a brief overview of the associated reports of lncRNAs in malignant neoplasms, including breast cancer, prostate cancer and hematological malignancies. LncRNAs may be evaluated as novel markers in disease diagnosis, and as prospective therapeutic targets for the prevention and treatment of human diseases.
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Affiliation(s)
- Ying Li
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
| | - Xin Wang
- Department of Hematology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong 250021, P.R. China
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174
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Early Growth Response Protein-1 Expression by Insulin-Like Growth Factor-1 Requires ROS-Dependent Activation of ERK1/2 and PKB Pathways in Vascular Smooth Muscle Cells. J Cell Biochem 2015; 117:152-62. [DOI: 10.1002/jcb.25260] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 06/12/2015] [Indexed: 01/03/2023]
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175
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Jing Z, Hou X, Wang Y, Yang G, Wang B, Tian X, Zhao S, Wang Y. Association between insulin-like growth factor-1 and cardiovascular disease risk: Evidence from a meta-analysis. Int J Cardiol 2015; 198:1-5. [DOI: 10.1016/j.ijcard.2015.06.114] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 06/26/2015] [Indexed: 11/24/2022]
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176
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Korner G, Noain D, Ying M, Hole M, Flydal MI, Scherer T, Allegri G, Rassi A, Fingerhut R, Becu-Villalobos D, Pillai S, Wueest S, Konrad D, Lauber-Biason A, Baumann CR, Bindoff LA, Martinez A, Thöny B. Brain catecholamine depletion and motor impairment in a Th knock-in mouse with type B tyrosine hydroxylase deficiency. Brain 2015; 138:2948-63. [PMID: 26276013 DOI: 10.1093/brain/awv224] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2015] [Accepted: 06/17/2015] [Indexed: 12/16/2023] Open
Abstract
Tyrosine hydroxylase catalyses the hydroxylation of L-tyrosine to l-DOPA, the rate-limiting step in the synthesis of catecholamines. Mutations in the TH gene encoding tyrosine hydroxylase are associated with the autosomal recessive disorder tyrosine hydroxylase deficiency, which manifests phenotypes varying from infantile parkinsonism and DOPA-responsive dystonia, also termed type A, to complex encephalopathy with perinatal onset, termed type B. We generated homozygous Th knock-in mice with the mutation Th-p.R203H, equivalent to the most recurrent human mutation associated with type B tyrosine hydroxylase deficiency (TH-p.R233H), often unresponsive to l-DOPA treatment. The Th knock-in mice showed normal survival and food intake, but hypotension, hypokinesia, reduced motor coordination, wide-based gate and catalepsy. This phenotype was associated with a gradual loss of central catecholamines and the serious manifestations of motor impairment presented diurnal fluctuation but did not improve with standard l-DOPA treatment. The mutant tyrosine hydroxylase enzyme was unstable and exhibited deficient stabilization by catecholamines, leading to decline of brain tyrosine hydroxylase-immunoreactivity in the Th knock-in mice. In fact the substantia nigra presented an almost normal level of mutant tyrosine hydroxylase protein but distinct absence of the enzyme was observed in the striatum, indicating a mutation-associated mislocalization of tyrosine hydroxylase in the nigrostriatal pathway. This hypomorphic mouse model thus provides understanding on pathomechanisms in type B tyrosine hydroxylase deficiency and a platform for the evaluation of novel therapeutics for movement disorders with loss of dopaminergic input to the striatum.
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Affiliation(s)
- Germaine Korner
- 1 Division of Metabolism, Department of Paediatrics, University of Zürich, Zürich, Switzerland 2 Affiliated with the Neuroscience Centre Zurich ZNZ, Zürich, Switzerland 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland
| | - Daniela Noain
- 4 Department of Neurology, University Hospital of Zurich, Zürich, Switzerland
| | - Ming Ying
- 5 Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Magnus Hole
- 5 Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Marte I Flydal
- 5 Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Tanja Scherer
- 1 Division of Metabolism, Department of Paediatrics, University of Zürich, Zürich, Switzerland 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland
| | - Gabriella Allegri
- 1 Division of Metabolism, Department of Paediatrics, University of Zürich, Zürich, Switzerland 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland
| | - Anahita Rassi
- 6 Division of Clinical Chemistry and Biochemistry, Department of Paediatrics, University of Zürich, Zürich, Switzerland
| | - Ralph Fingerhut
- 7 Swiss Newborn Screening Laboratory, University Children's Hospital, Zurich, Switzerland 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland
| | | | - Samyuktha Pillai
- 9 Institute of Physiology, University of Zurich, Zürich, Switzerland
| | - Stephan Wueest
- 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland 10 Division of Endocrinology, Department of Pediatrics, University of Zurich, Switzerland
| | - Daniel Konrad
- 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland 10 Division of Endocrinology, Department of Pediatrics, University of Zurich, Switzerland
| | - Anna Lauber-Biason
- 11 Department of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Christian R Baumann
- 2 Affiliated with the Neuroscience Centre Zurich ZNZ, Zürich, Switzerland 4 Department of Neurology, University Hospital of Zurich, Zürich, Switzerland
| | - Laurence A Bindoff
- 12 Department of Clinical Medicine K1, University of Bergen, Norway 13 Department of Neurology, Haukeland University Hospital, Bergen, Norway
| | - Aurora Martinez
- 5 Department of Biomedicine, University of Bergen, Bergen, Norway
| | - Beat Thöny
- 1 Division of Metabolism, Department of Paediatrics, University of Zürich, Zürich, Switzerland 2 Affiliated with the Neuroscience Centre Zurich ZNZ, Zürich, Switzerland 3 Affiliated with the Children's Research Centre CRC, Zürich, Switzerland
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177
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An Endocrine Genetic Signal Between Blood Cells and Vascular Smooth Muscle Cells: Role of MicroRNA-223 in Smooth Muscle Function and Atherogenesis. J Am Coll Cardiol 2015; 65:2526-37. [PMID: 26065992 DOI: 10.1016/j.jacc.2015.03.570] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2015] [Revised: 03/25/2015] [Accepted: 03/31/2015] [Indexed: 11/24/2022]
Abstract
BACKGROUND MicroRNA-223 (miR-223) is a hematopoietic lineage cell-specific microRNA. However, a significant amount of miR-223 has been identified in vascular smooth muscle cells (VSMCs) and vascular walls that should not have endogenous miR-223. OBJECTIVES This study sought to determine the sources of miR-223 in normal and atherosclerotic arteries and the role of miR-223 in atherogenesis. METHODS The levels and sources of miR-223 in blood cells (leukocytes and platelets), serum, blood microparticles, VSMCs, and vascular walls were determined. Both in vivo and in vitro studies were conducted to evaluate miR-223 secretion by blood cells and the ability of miR-223 to enter VSMCs and vascular walls. Subsequent changes in and the effects of miR-223 levels on serum and arteries in atherosclerotic animals and patients were investigated. RESULTS Blood cells were able to secrete miR-223 into serum. MicroRNA-223 from blood cells was the most abundant cell-free miRNA in blood. Blood cell-secreted miR-223 could enter VSMCs and vascular walls, which produced strong biological effects via its target genes. In both atherosclerotic apolipoprotein-E knockout mice and patients with atherosclerosis, miR-223 levels were significantly increased in serum and atherosclerotic vascular walls. The atherosclerotic lesions in apolipoprotein-E knockout mice were exacerbated by miR-223 knockdown. The effect of miR-223 on atherogenesis was verified using miR-223 knockout mice. CONCLUSIONS Blood cell-secreted miR-223 enters vascular cells and walls, and appears to play important roles in VSMC function and atherogenesis. As a novel endocrine genetic signal between blood cells and vascular cells, miR-223 may provide a novel mechanism and new therapeutic target for atherosclerosis.
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178
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Autologous Bone Marrow Mononuclear Cell Transplantation Delays Progression of Carotid Atherosclerosis in Rabbits. Mol Neurobiol 2015; 53:4387-96. [PMID: 26232064 DOI: 10.1007/s12035-015-9347-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 07/07/2015] [Indexed: 10/23/2022]
Abstract
Bone marrow mononuclear cells (BMMNCs) can counteract oxidative stress and inhibit the inflammatory response in focal ischemic stroke models. However, the effect of BMMNC transplantation on carotid atherosclerosis needs to be determined. The carotid atherosclerotic plaque model was established in New Zealand White rabbits by balloon injury and 8 weeks of high-fat diet. Rabbits were randomized to receive an intravenous injection of autologous bromodeoxyuridine (BrdU)-labeled BMMNCs or an equal volume of phosphate-buffered saline. Plaques were evaluated for expression of proinflammatory and anti-inflammatory cytokines, anti-oxidant proteins, and markers of cell death. BMMNCs migrated into atherosclerotic plaque on the first day after cell transplantation. BMMNC-treated rabbits had smaller plaques and more collagen deposition than did the vehicle-treated controls on day 28 (p < 0.05). BMMNC treatment significantly increased endothelial nitric oxide synthase and the anti-oxidant enzymes glutathione peroxidase and superoxide dismutase in plaques compared to vehicle treatment on day 7. BMMNC-treated rabbits also had lower levels of cleaved caspase-3 expression; lower levels of proinflammatory cytokines interleukin-1β, tumor necrosis factor alpha, and matrix metalloproteinase 9; and higher levels of insulin-like growth factor-1 and its receptor (p < 0.05). Autologous BMMNC transplantation can suppress the process of atherosclerotic plaque formation and is associated with enhanced anti-oxidative effect, reduced levels of inflammatory cytokines and cleaved caspase-3, and increased expression of insulin-like growth factor-1 and its receptor. BMMNC transplantation represents a novel approach for the treatment of carotid atherosclerosis.
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179
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Marech I, Leporini C, Ammendola M, Porcelli M, Gadaleta CD, Russo E, De Sarro G, Ranieri G. Classical and non-classical proangiogenic factors as a target of antiangiogenic therapy in tumor microenvironment. Cancer Lett 2015; 380:216-26. [PMID: 26238184 DOI: 10.1016/j.canlet.2015.07.028] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 07/21/2015] [Accepted: 07/22/2015] [Indexed: 12/21/2022]
Abstract
Angiogenesis is sustained by classical and non-classical proangiogenic factors (PFs) acting in tumor microenvironment and these factors are also potential targets of antiangiogenic therapies. All PFs induce the overexpression of several signaling pathways that lead to migration and proliferation of endothelial cells contributing to tumor angiogenesis and survival of cancer cells. In this review, we have analyzed each PF with its specific receptor/s and we have summarized the available antiangiogenic drugs (e.g. monoclonal antibodies) targeting these PFs, some of these agents have already been approved, others are currently in development for the treatment of several human malignancies.
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Affiliation(s)
- Ilaria Marech
- Diagnostic and Interventional Radiology Unit with Integrated Section of Translational Medical Oncology, Istituto Tumori "Giovanni Paolo II", Viale Orazio Flacco 65, 70124 Bari, Italy
| | - Christian Leporini
- Department of Health Science, Clinical Pharmacology and Pharmacovigilance Unit and Pharmacovigilance's Centre Calabria Region, University of Catanzaro "Magna Graecia" Medical School, Viale Europa, Germaneto, 88100 Catanzaro, Italy
| | - Michele Ammendola
- Department of Medical and Surgery Sciences, Clinical Surgery Unit, University "Magna Graecia" Medical School, Viale Europa, Germaneto, 88100 Catanzaro, Italy
| | - Mariangela Porcelli
- Diagnostic and Interventional Radiology Unit with Integrated Section of Translational Medical Oncology, Istituto Tumori "Giovanni Paolo II", Viale Orazio Flacco 65, 70124 Bari, Italy
| | - Cosmo Damiano Gadaleta
- Diagnostic and Interventional Radiology Unit with Integrated Section of Translational Medical Oncology, Istituto Tumori "Giovanni Paolo II", Viale Orazio Flacco 65, 70124 Bari, Italy
| | - Emilio Russo
- Department of Health Science, Clinical Pharmacology and Pharmacovigilance Unit and Pharmacovigilance's Centre Calabria Region, University of Catanzaro "Magna Graecia" Medical School, Viale Europa, Germaneto, 88100 Catanzaro, Italy
| | - Giovambattista De Sarro
- Department of Health Science, Clinical Pharmacology and Pharmacovigilance Unit and Pharmacovigilance's Centre Calabria Region, University of Catanzaro "Magna Graecia" Medical School, Viale Europa, Germaneto, 88100 Catanzaro, Italy
| | - Girolamo Ranieri
- Diagnostic and Interventional Radiology Unit with Integrated Section of Translational Medical Oncology, Istituto Tumori "Giovanni Paolo II", Viale Orazio Flacco 65, 70124 Bari, Italy.
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180
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Liu K, Ying Z, Qi X, Shi Y, Tang Q. MicroRNA-1 regulates the proliferation of vascular smooth muscle cells by targeting insulin-like growth factor 1. Int J Mol Med 2015; 36:817-24. [PMID: 26166810 DOI: 10.3892/ijmm.2015.2277] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 05/29/2015] [Indexed: 11/06/2022] Open
Abstract
The aim of this study was to investigate the role of microRNAs (miRNAs or miRs) in vascular smooth muscle cell (VSMC) proliferation and to elucidate the underlying molecular mechanisms. In a previous study, using microarray analysis, differentially expressed miRNAs were identified in primary VSMCs isolated from the medial layer of the thoracic aorta obtained from spontaneously hypertensive rats (SHRs) and Wistar Kyoto (WKY) rats. Among others, miR-1 was identified to be downregulated in VSMCs from SHRs. Thus, in the present study, we focused on miR-1, the downregulation of which was confirmed by RT-qPCR and western blot analysis in VSMCs isolated from SHRs. We identified insulin-like growth factor 1 (IGF1) as a potential target gene of miR-1, and we subsequently validated IGF1 as a target gene of miR-1 by luciferase assay. The results revealed that the exogenous overexpression of miR-1 significantly suppressed the expression of IGF1. Additionally, we demonstrated that the downregulation of IGF1 by the introduction of miR-1 attenuated the proliferation of the VSMCs, suggesting that IGF1 is a target gene of miR-1 and that the effects of miR-1 are mediated through IGF1. In conclusion, the findings of our study demonstrate that miR-1 is significantly downregulated in VSMCs and that it is an important regulator of cell proliferation. Therefore, IGF1 may be involved in the regulation of VSMC proliferation by targeting miR-1.
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Affiliation(s)
- Kun Liu
- Department of Vascular Medicine, Peking University Shougang Hospital, Beijing, P.R. China
| | - Zhang Ying
- Department of Cardiology, the First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Xia Qi
- Transfusion Medicine Section, Department of Clinical Laboratory of Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Ying Shi
- Beijing Youan Hospital, Beijing, P.R. China
| | - Qiang Tang
- Department of Vascular Medicine, Peking University Shougang Hospital, Beijing, P.R. China
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181
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Ranganathan P, Jayakumar C, Tang Y, Park KM, Teoh JP, Su H, Li J, Kim IM, Ramesh G. MicroRNA-150 deletion in mice protects kidney from myocardial infarction-induced acute kidney injury. Am J Physiol Renal Physiol 2015; 309:F551-8. [PMID: 26109086 DOI: 10.1152/ajprenal.00076.2015] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Accepted: 06/18/2015] [Indexed: 11/22/2022] Open
Abstract
Despite greater understanding of acute kidney injury (AKI) in animal models, many of the preclinical studies are not translatable. Most of the data were derived from a bilateral renal pedicle clamping model with warm ischemia. However, ischemic injury of the kidney in humans is distinctly different and does not involve clamping of renal vessel. Permanent ligation of the left anterior descending coronary artery model was used to test the role of microRNA (miR)-150 in AKI. Myocardial infarction in this model causes AKI which is similar to human cardiac bypass surgery. Moreover, the time course of serum creatinine and biomarker elevation were also similar to human ischemic injury. Deletion of miR-150 suppressed AKI which was associated with suppression of inflammation and interstitial cell apoptosis. Immunofluorescence staining with endothelial marker and marker of apoptosis suggested that dying cells are mostly endothelial cells with minimal epithelial cell apoptosis in this model. Interestingly, deletion of miR-150 also suppressed interstitial fibrosis. Consistent with protection, miR-150 deletion causes induction of its target gene insulin-like growth factor-1 receptor (IGF-1R) and overexpression of miR-150 in endothelial cells downregulated IGF-1R, suggesting miR-150 may mediate its detrimental effects through suppression of IGF-1R pathways.
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Affiliation(s)
- Punithavathi Ranganathan
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Calpurnia Jayakumar
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Yaoping Tang
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Kyoung-mi Park
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Jian-peng Teoh
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Huabo Su
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Jie Li
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Il-man Kim
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
| | - Ganesan Ramesh
- Department of Medicine and Vascular Biology Center, Georgia Regents University, Augusta, Georgia
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182
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Kwok HH, Chan LS, Poon PY, Yue PYK, Wong RNS. Ginsenoside-Rg1 induces angiogenesis by the inverse regulation of MET tyrosine kinase receptor expression through miR-23a. Toxicol Appl Pharmacol 2015; 287:276-83. [PMID: 26115870 DOI: 10.1016/j.taap.2015.06.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2015] [Revised: 06/19/2015] [Accepted: 06/20/2015] [Indexed: 10/23/2022]
Abstract
Therapeutic angiogenesis has been implicated in ischemic diseases and wound healing. Ginsenoside-Rg1 (Rg1), one of the most abundant active components of ginseng, has been demonstrated as an angiogenesis-stimulating compound in different models. There is increasing evidence implicating microRNAs (miRNAs), a group of non-coding RNAs, as important regulators of angiogenesis, but the role of microRNAs in Rg1-induced angiogenesis has not been fully explored. In this report, we found that stimulating endothelial cells with Rg1 could reduce miR-23a expression. In silico experiments predicted hepatocyte growth factor receptor (MET), a well-established mediator of angiogenesis, as the target of miR-23a. Transfection of the miR-23a precursor or inhibitor oligonucleotides validated the inverse relationship of miR-23a and MET expression. Luciferase reporter assays further confirmed the interaction between miR-23a and the MET mRNA 3'-UTR. Intriguingly, ginsenoside-Rg1 was found to increase MET protein expression in a time-dependent manner. We further demonstrated that ginsenoside-Rg1-induced angiogenic activities were indeed mediated through the down-regulation of miR-23a and subsequent up-regulation of MET protein expression, as confirmed by gain- and loss-of-function angiogenic experiments. In summary, our results demonstrated that ginsenoside-Rg1 could induce angiogenesis by the inverse regulation of MET tyrosine kinase receptor expression through miR-23a. This study has broadened our understanding of the non-genomic effects of ginsenoside-Rg1, and provided molecular evidence that warrant further development of natural compound as novel angiogenesis-promoting therapy.
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Affiliation(s)
- Hoi-Hin Kwok
- Dr. Gilbert Hung Ginseng Laboratory, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Lai-Sheung Chan
- Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Po-Ying Poon
- Dr. Gilbert Hung Ginseng Laboratory, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Patrick Ying-Kit Yue
- Dr. Gilbert Hung Ginseng Laboratory, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China; Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China
| | - Ricky Ngok-Shun Wong
- Dr. Gilbert Hung Ginseng Laboratory, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China; Department of Biology, Faculty of Science, Hong Kong Baptist University, Hong Kong SAR, China.
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183
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Sirbu A, Nicolae H, Martin S, Barbu C, Copaescu C, Florea S, Panea C, Fica S. IGF-1 and Insulin Resistance Are Major Determinants of Common Carotid Artery Thickness in Morbidly Obese Young Patients. Angiology 2015; 67:259-65. [DOI: 10.1177/0003319715586499] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
We assessed the relationship between insulin resistance, serum insulin-like growth factor 1 (IGF-1) levels, and common carotid intima–media thickness (CC-IMT) in morbidly obese young patients. A total of 249 patients (aged 37.9 ± 9.8 years, body mass index [BMI] 45.6 ± 8.3 kg/m2) were evaluated (metabolic tests, serum IGF-1 measurements, homeostasis model assessment—insulin resistance [HOMA-IR], and ultrasonographically assessed CC-IMT) in a research program for bariatric surgery candidates. After adjusting for age, gender, BMI, systolic blood pressure, uric acid, antihypertensive and lipid-lowering treatment, metabolic syndrome, and metabolic class, both HOMA-IR and IGF-1 z-score were significantly associated with CC-IMT. These results were confirmed in logistic regression analysis, in which age (β = 1.11, P = .001), gender (β = 3.19, P = .001), HOMA-IR (β = 1.221, P = .005), and IGF-1 z-score (β = 1.734, P = .009) were the only independent determinants of abnormal CC-IMT, presumably modulating the effect of the other risk factors included in the regression. Area under the receiver–operating characteristic curve for the model was 0.841 (confidence interval: 0.776-0.907; P < .001). In conclusion, in morbidly obese young adults, insulin resistance and IGF-1 z-score are significantly associated with CC-IMT, independent of other major cardiovascular risk factors.
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Affiliation(s)
- Anca Sirbu
- Endocrinology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Victor Babes Institute, Bucharest, Romania
| | - Horia Nicolae
- Neurology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Sorina Martin
- Endocrinology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Carmen Barbu
- Endocrinology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | | | - Suzana Florea
- Endocrinology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Cristina Panea
- Neurology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Simona Fica
- Endocrinology Department, Elias University Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
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184
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Shaikh H, Boudes E, Khoja Z, Shevell M, Wintermark P. Angiogenesis dysregulation in term asphyxiated newborns treated with hypothermia. PLoS One 2015; 10:e0128028. [PMID: 25996847 PMCID: PMC4440713 DOI: 10.1371/journal.pone.0128028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Accepted: 04/21/2015] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Neonatal encephalopathy following birth asphyxia is a major predictor of long-term neurological impairment. Therapeutic hypothermia is currently the standard of care to prevent brain injury in asphyxiated newborns but is not protective in all cases. More robust and versatile treatment options are needed. Angiogenesis is a demonstrated therapeutic target in adult stroke. However, no systematic study examines the expression of angiogenesis-related markers following birth asphyxia in human newborns. OBJECTIVE This study aimed to evaluate the expression of angiogenesis-related protein markers in asphyxiated newborns developing and not developing brain injury compared to healthy control newborns. DESIGN/METHODS Twelve asphyxiated newborns treated with hypothermia were prospectively enrolled; six developed eventual brain injury and six did not. Four healthy control newborns were also included. We used Rules-Based Medicine multi-analyte profiling and protein array technologies to study the plasma concentration of 49 angiogenesis-related proteins. Mean protein concentrations were compared between each group of newborns. RESULTS Compared to healthy newborns, asphyxiated newborns not developing brain injury showed up-regulation of pro-angiogenic proteins, including fatty acid binding protein-4, glucose-6-phosphate isomerase, neuropilin-1, and receptor tyrosine-protein kinase erbB-3; this up-regulation was not evident in asphyxiated newborns eventually developing brain injury. Also, asphyxiated newborns developing brain injury showed a decreased expression of anti-angiogenic proteins, including insulin-growth factor binding proteins -1, -4, and -6, compared to healthy newborns. CONCLUSIONS These findings suggest that angiogenesis pathways are dysregulated following birth asphyxia and are putatively involved in brain injury pathology and recovery.
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Affiliation(s)
- Henna Shaikh
- Division of Newborn Medicine, Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Elodie Boudes
- Division of Newborn Medicine, Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Zehra Khoja
- Division of Newborn Medicine, Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Michael Shevell
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada
| | - Pia Wintermark
- Division of Newborn Medicine, Department of Pediatrics, McGill University, Montreal, Quebec, Canada
- * E-mail:
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185
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Uçar A, Öz F, Baş F, Oflaz H, Nişli K, Tuğrul M, Yetim A, Darendeliler F, Saka N, Poyrazoğlu Ş, Bundak R. Increased arterial stiffness in young normotensive patients with Turner syndrome: associations with vascular biomarkers. Clin Endocrinol (Oxf) 2015; 82:719-27. [PMID: 25284268 DOI: 10.1111/cen.12626] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2014] [Revised: 09/10/2014] [Accepted: 09/29/2014] [Indexed: 12/12/2022]
Abstract
OBJECTIVES Factors contributing to arteriopathy in patients with Turner syndrome (TS) remain unclear. We assessed arterial stiffness in young, normotensive patients with TS and correlated arterial stiffness with vascular biomarkers, GH treatment and oestrogen exposure. Sixty-one patients with TS (mean age, 12·6 years; range 6·6-21·3 years) were matched for age and sex with 61 healthy peers. Associations between arterial stiffness and high-sensitivity C-reactive protein (hsCRP), B-type natriuretic peptide (BNP), atrial NP (ANP), plasma aldosterone/plasma renin activity (PRA), IGF1 and IGFBP3 were examined after adjusting for well-established confounders of vascular disease. RESULTS Carotid intima media thickness standard deviation score (SDS), arterial stiffness index SDS and incremental modulus of elasticity SDS were higher, and distensibility coefficient SDS was lower in patients with TS. The duration of GH treatment and oestrogen exposure was not associated with indices of arterial stiffness. TS patients had higher hsCRP, BNP and ANP. Plasma aldosterone/PRA, IGF1 and IGFBP3 were similar in patients and controls. Multivariable regression analyses (R(2) = 0·200-0·668, P < 0·01) showed that BNP was associated with all indices of arterial stiffness. We found that hsCRP was associated with distensibility coefficient SDS (β = -0·16, P < 0·01). TS was independently associated with increased arterial stiffness (β = 0·420-3·424, P < 0·001 for all, R(2) = 0·06-0·31). CONCLUSIONS Young, normotensive TS patients had increased arterial stiffness than that of healthy peers. BNP, and possibly hsCRP, was independently associated with arterial stiffness in TS. Further research will determine any causal inference of these relationships.
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Affiliation(s)
- Ahmet Uçar
- Paediatric Endocrine Unit, Istanbul Faculty of Medicine, Istanbul University, Istanbul, Turkey
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186
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Melton DW, McManus LM, Gelfond JAL, Shireman PK. Temporal phenotypic features distinguish polarized macrophages in vitro. Autoimmunity 2015; 48:161-76. [PMID: 25826285 DOI: 10.3109/08916934.2015.1027816] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Macrophages are important in vascular inflammation and environmental factors influence macrophage plasticity. Macrophage transitions into pro-inflammatory (M1) or anti-inflammatory (M2) states have been defined predominately by measuring cytokines in culture media (CM). However, temporal relationships between cellular and secreted cytokines have not been established. We measured phenotypic markers and cytokines in cellular and CM of murine bone marrow-derived macrophages at multiple time points following stimulation with IFN-γ + LPS (M1), IL-4 (M2a) or IL-10 (M2c). Cytokines/proteins in M1-polarized macrophages exhibited two distinct temporal patterns; an early (0.5-3 h), transient increase in cellular cytokines (GM-CSF, KC-GRO, MIP-2, IP-10 and MIP-1β) and a delayed (3-6 h) response that was more sustained [IL-3, regulated on activation normal T cell expressed and secreted (RANTES), and tissue inhibitor of metalloproteinases 1 (TIMP-1)]. M2a-related cytokine/cell markers (IGF-1, Fizz1 and Ym1) were progressively (3-24 h) increased post-stimulation. In addition, novel patterns were observed. First, and unexpectedly, cellular pro-inflammatory chemokines, MCP-1 and MCP-3 but not MCP-5, were comparably increased in M1 and M2a macrophages. Second, Vegfr1 mRNA was decreased in M1 and increased in M2a macrophages. Finally, VEGF-A was increased in the CM of M1 cultures and strikingly reduced in M2a coinciding with increased Vegfr1 expression, suggesting decreased VEGF-A in M2a CM was secondary to increased soluble VEGFR1. In conclusion, macrophage cytokine production and marker expression were temporally regulated and relative levels compared across polarizing conditions were highly dependent upon the timing and location (cellular versus CM) of the sample collection. For most cytokines, cellular production preceded increases in the CM suggesting that cellular regulatory pathways should be studied within 6 h of stimulation. The divergent polarization-dependent expression of Vegfr1 may be essential to controlling VEGF potentially regulating angiogenesis and inflammatory cell infiltration in the vascular niche. The current study expands the repertoire of cytokines produced by polarized macrophages and provides insights into the dynamic regulation of macrophage polarization and resulting cytokines, proteins and gene expression that influence vascular inflammation.
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187
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Khodadadi E, Panjepour M, Abbasian M, Broujeni ZK, Mofid MR. Cloning and expression of full-length human insulin-like growth factor binding protein 3 (IGFBP3) in the Escherichia coli. Adv Biomed Res 2015; 4:66. [PMID: 25878991 PMCID: PMC4386200 DOI: 10.4103/2277-9175.153886] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 06/11/2014] [Indexed: 01/31/2023] Open
Abstract
Background: The effect of the growth hormone on target cells is mediated by the insulin-like growth factor 1 (IGF-1). IGF-1 binds to the insulin-like growth factor binding proteins (IGFBPs) in blood and biological fluids. Considering the important application of IGBP3 as a drug component, in this research we cloned and expressed the full-length IGFBP3 in the pET-11a vector and BL21 (DE3) expression host. Materials and Methods: First the sequence encoding of IGFBP3 was designed based on the amino acid sequence of the protein and then by codon optimization, in order to ensure the maximum expression in Escherichia coli. In the next step, the synthetic DNA encoding IGFBP3 was inserted into the pUC57 vector, at the appropriate restriction sites and then subcloned in the pET-11a expression vector in the same restriction sites. The constructed vector was transformed to E. coli BL21 as an expression host and induced in the presence of IPTG for expression of the IGFBP3 protein. Protein expression was evaluated by sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE). Results: Double digestion of the new plasmid (pET-11a -IGBP3) with NdeI and BamHI showed two bands in 873 bp and 5700 bp. To study the accurate cloning procedure, the plasmid was sequenced and its authenticity was confirmed. Also the expected protein band (31.6 kDa) was observed in SDS-PAGE analysis. Conclusion: DNA fragment encoding the full-length IGFBP3 protein was accurately cloned in the pET-11a expression vector and the recombinant plasmid transformed to E. coli BL21 (DE3) expression host. Results of the SDS-PAGE analysis verified that recombinant IGFBP3 (31.6 kDa) are successfully expressed under the control of T7 promoter. As we shown pET-11a can be successfully used for expression of the IGFBP3 protein.
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Affiliation(s)
- Emad Khodadadi
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mojtaba Panjepour
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mahdi Abbasian
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Khalili Broujeni
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Reza Mofid
- Department of Biochemistry, School of Pharmacy, Bioinformatics Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
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188
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Liang M, Woodard LE, Liang A, Luo J, Wilson MH, Mitch WE, Cheng J. Protective role of insulin-like growth factor-1 receptor in endothelial cells against unilateral ureteral obstruction-induced renal fibrosis. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1234-50. [PMID: 25783760 DOI: 10.1016/j.ajpath.2015.01.027] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 01/13/2015] [Accepted: 01/15/2015] [Indexed: 12/17/2022]
Abstract
Insulin-like growth factor-1 receptor (IGF-1R) can regulate vascular homeostasis and endothelial function. We studied the role of IGF-1R in oxidative stress-induced endothelial dysfunction. Unilateral ureteral obstruction (UUO) was performed in wild-type (WT) mice and mice with endothelial cell (EC)-specific IGF-1R knockout (KO). After UUO in endothelial IGF-1R KO mice, endothelial barrier dysfunction was more severe than in WT mice, as seen by increased inflammatory cell infiltration and vascular endothelial (VE)-cadherin phosphorylation. UUO in endothelial IGF-1R KO mice increased interstitial fibroblast accumulation and enhanced extracellular protein deposition as compared with the WT mice. Endothelial barrier function measured by transendothelial migration in response to hydrogen peroxide (H2O2) was impaired in ECs. Silencing IGF-1R enhanced the influence of H2O2 in disrupting the VE-protein tyrosine phosphatase/VE-cadherin interaction. Overexpression of IGF-1R suppressed H2O2-induced endothelial barrier dysfunction. Furthermore, by using the piggyBac transposon system, we expressed IGF-1R in VE cells in mice. The expression of IGF-1R in ECs also suppressed the inflammatory cell infiltration and renal fibrosis induced by UUO. IGF-1R KO in the VE-cadherin lineage of bone marrow cells had no significant effect on the UUO-induced fibrosis, as compared with control mice. Our results indicate that IGF-1R in the endothelium maintains the endothelial barrier function by stabilization of the VE-protein tyrosine phosphatase/VE-cadherin complex. Decreased expression of IGF-1R impairs endothelial function and increases the fibrosis of kidney disease.
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Affiliation(s)
- Ming Liang
- Department of Nephrology, Guangzhou First People's Hospital, Guangzhou Medical University, Guangzhou, China; Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Lauren E Woodard
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University, and Department of Veterans Affairs, Nashville, Tennessee
| | - Anlin Liang
- Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Jinlong Luo
- Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Matthew H Wilson
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University, and Department of Veterans Affairs, Nashville, Tennessee
| | - William E Mitch
- Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, Texas
| | - Jizhong Cheng
- Nephrology Division, Department of Medicine, Baylor College of Medicine, Houston, Texas.
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189
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Xavier S. Breaking the barriers: New role for insulin-like growth factor 1 receptor in vascular permeability. THE AMERICAN JOURNAL OF PATHOLOGY 2015; 185:1198-200. [PMID: 25747533 DOI: 10.1016/j.ajpath.2015.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 02/12/2015] [Indexed: 10/23/2022]
Abstract
This commentary highlights the article by Liang et al that describes a critical role for insulin-like growth factor 1 receptor in the progression of chronic kidney disease.
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Affiliation(s)
- Sandhya Xavier
- Department of Medicine, Renal Research Institute, New York Medical College, Valhalla, New York.
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190
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Chen DL, Huang PH, Chiang CH, Leu HB, Chen JW, Lin SJ. Phytosterols increase circulating endothelial progenitor cells and insulin-like growth factor-1 levels in patients with nonalcoholic fatty liver disease: A randomized crossover study. J Funct Foods 2015. [DOI: 10.1016/j.jff.2014.12.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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191
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Kim S, Kwon J. Effect of thymosin beta 4 in the presence of up-regulation of the insulin-like growth factor-1 signaling pathway on high-glucose-exposed vascular endothelial cells. Mol Cell Endocrinol 2015; 401:238-47. [PMID: 25540921 DOI: 10.1016/j.mce.2014.12.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 11/14/2014] [Accepted: 12/09/2014] [Indexed: 11/15/2022]
Abstract
Thymosin beta 4 (Tβ4), which regulates vascular cell growth, can ameliorate some of the problems associated with diabetes. However, the precise signaling mechanisms by which Tβ4 protects against hyperglycemia-induced damage to endothelial cells have not been investigated in detail. Thus, the aim of this study was to elucidate the role of Tβ4 in diabetes and the possible involvement of insulin-like growth factor-1 (IGF-1), which affects cellular survival, metabolism, and glucose homeostasis in high-glucose (HG)-injured human umbilical vein endothelial cells (HUVECs). Immunoblotting assays revealed that under HG blockade conditions, Tβ4 did not alter the insulin-signaling pathway, but induced overexpression of IGF-1 protein, leading to activation of factors in alternative signaling pathway. Small interfering RNA of Tβ4 and IGF-1 were studied to clarify relationship between Tβ4 and IGF-1. These findings suggest that IGF-1 induction by Tβ4 ameliorates the damage in HG-injured HUVECs which manifest as diabetic vascular disorder.
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Affiliation(s)
- Sokho Kim
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chonbuk National University, Jeonju, Jeonbuk 561-156, Republic of Korea
| | - Jungkee Kwon
- Department of Laboratory Animal Medicine, College of Veterinary Medicine, Chonbuk National University, Jeonju, Jeonbuk 561-156, Republic of Korea.
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Abstract
Endothelial cells line blood vessels and modulate vascular tone, thrombosis, inflammatory responses and new vessel formation. They are implicated in many disease processes including atherosclerosis and cancer. IGFs play a significant role in the physiology of endothelial cells by promoting migration, tube formation and production of the vasodilator nitric oxide. These actions are mediated by the IGF1 and IGF2/mannose 6-phosphate receptors and are modulated by a family of high-affinity IGF binding proteins. IGFs also increase the number and function of endothelial progenitor cells, which may contribute to protection from atherosclerosis. IGFs promote angiogenesis, and dysregulation of the IGF system may contribute to this process in cancer and eye diseases including retinopathy of prematurity and diabetic retinopathy. In some situations, IGF deficiency appears to contribute to endothelial dysfunction, whereas IGF may be deleterious in others. These differences may be due to tissue-specific endothelial cell phenotypes or IGFs having distinct roles in different phases of vascular disease. Further studies are therefore required to delineate the therapeutic potential of IGF system modulation in pathogenic processes.
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Affiliation(s)
- Leon A Bach
- Department of Medicine (Alfred)Monash University, Prahran 3181, AustraliaDepartment of Endocrinology and DiabetesAlfred Hospital, Commercial Road, Melbourne 3004, Australia Department of Medicine (Alfred)Monash University, Prahran 3181, AustraliaDepartment of Endocrinology and DiabetesAlfred Hospital, Commercial Road, Melbourne 3004, Australia
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193
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Manhylova TA, Gafarova NH. Metabolic and hemodynamic effects of the growth hormone system — insulin-like growth factor. TERAPEVT ARKH 2015; 87:128-133. [DOI: 10.17116/terarkh20158712128-133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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194
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Sukhanov S, Snarski P, Vaughn C, Lobelle-Rich P, Kim C, Higashi Y, Shai SY, Delafontaine P. Insulin-like growth factor I reduces lipid oxidation and foam cell formation via downregulation of 12/15-lipoxygenase. Atherosclerosis 2014; 238:313-20. [PMID: 25549319 DOI: 10.1016/j.atherosclerosis.2014.12.024] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 11/19/2014] [Accepted: 12/14/2014] [Indexed: 01/15/2023]
Abstract
OBJECTIVE We have shown that insulin-like growth factor I (IGF-1) infusion in Apoe(-/-) mice decreased atherosclerotic plaque size and plaque macrophage and lipid content suggesting that IGF-1 suppressed formation of macrophage-derived foam cells. Since 12/15-lipoxygenase (12/15-LOX) plays an important role in OxLDL and foam cell formation, we hypothesized that IGF-1 downregulates 12/15-LOX, thereby suppressing lipid oxidation and foam cell formation. APPROACH AND RESULTS We found that IGF-1 decreased 12/15-LOX plaque immunopositivity and serum OxLDL levels in Apoe(-/-) mice. IGF-1 reduced 12/15-LOX protein and mRNA levels in cultured THP-1 macrophages and IGF-1 also decreased expression of STAT6 transcription factor. IGF-1 reduction in macrophage 12/15-LOX was mediated in part via a PI3 kinase- and STAT6-dependent transcriptional mechanism. IGF-1 suppressed THP-1 macrophage ability to oxidize lipids and form foam cells. IGF-1 downregulated 12/15-LOX in human blood-derived primary macrophages and IGF-1 decreased LDL oxidation induced by these cells. IGF-1 reduced LDL oxidation and formation of foam cells by wild type murine peritoneal macrophages, however these effects were completely blocked in 12/15-LOX-null macrophages suggesting that the ability of IGF-1 to reduce LDL oxidation and foam cells formation is dependent on its ability to downregulate 12/15-LOX. CONCLUSIONS Overall our data demonstrate that IGF-1 reduces lipid oxidation and foam cell formation via downregulation of 12/15-LOX and this mechanism may play a major role in the anti-atherosclerotic effects of IGF-1.
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Affiliation(s)
- Sergiy Sukhanov
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA.
| | - Patricia Snarski
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Charlotte Vaughn
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Patricia Lobelle-Rich
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Catherine Kim
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Yusuke Higashi
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Shaw-Yung Shai
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
| | - Patrice Delafontaine
- Heart and Vascular Institute, School of Medicine, Tulane University, New Orleans, LA 70112, USA
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Rocchi L, Caraffi S, Perris R, Mangieri D. The angiogenic asset of soft tissue sarcomas: a new tool to discover new therapeutic targets. Biosci Rep 2014; 34:e00147. [PMID: 25236925 PMCID: PMC4219423 DOI: 10.1042/bsr20140075] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Revised: 07/04/2014] [Accepted: 07/14/2014] [Indexed: 12/18/2022] Open
Abstract
STS (soft tissue sarcomas) are rare malignant tumours deriving from cells of mesenchymal origin and represent only 1% of all malignant neoplasms. It has been extensively demonstrated that angiogenesis has an important role in cancer malignancy. Particularly, a lot of studies demonstrate the importance of angiogenesis in the development of carcinomas, whereas little is known about the role of angiogenesis in sarcomas and especially in STS. This review aims at summarizing the new discoveries about the nature and the importance of angiogenesis in STS and the new possible therapeutic strategies involved. Only a few studies concerning STS focus on tumour neovascularization and proangiogenic factors and look for a correlation with the patients prognosis/survival. These studies demonstrate that intratumoural MVD (microvessels density) may not accurately represent the angiogenic capacity of STS. Nevertheless, this does not exclude the possibility that angiogenesis could be important in STS. The importance of neoangiogenesis in soft tissue tumours is confirmed by the arising number of publications comparing angiogenesis mediators with clinical features of patients with STS. The efficacy of anti-angiogenic therapies in other types of cancer is well documented. The understanding of the involvement of the angiogenic process in STS, together with the necessity to improve the therapy for this often mortal condition, prompted the exploration of anti-tumour compounds targeting this pathway. In conclusion, this review emphasizes the importance to better understand the mechanisms of angiogenesis in STS in order to subsequently design-specific target therapies for this group of poorly responding tumours.
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Key Words
- angiogenesis factors
- angiogenesis
- soft tissue sarcomas
- target therapy
- csf, colony-stimulating factor
- ec, endothelial cell
- fgf-2, fibroblast growth factor-2
- mfh, malignant fibrous histiocytoma
- mmp, matrix metalloproteinase
- mtor, mammalian target of rapamycin
- mvd, microvessels density
- pdgfrβ, platelet-derived growth factor beta
- plgf, placental growth factor
- sts, soft tissue sarcomas
- tki, tyrosine kinase inhibitor
- timp, tissue inhibitors of metalloproteinases
- upa, urokinase-type plasminogen activator
- vegf, vascular endothelial growth factor
- vegfr, vegf receptor
- vwf, von-willebrand factor
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Affiliation(s)
- Laura Rocchi
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
| | - Stefano Caraffi
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
| | - Roberto Perris
- †COMT–Centro di Oncologia Medica e Traslazionale, Università di Parma, Parco Area delle Scienze 11/A 43100-Parma, Italy
| | - Domenica Mangieri
- *Unità Operativa di Anatomia e Istologia Patologica, Azienda Ospedaliero-Universitaria di Parma, Via Gramsci, 14, 43100-Parma, Italy
- †COMT–Centro di Oncologia Medica e Traslazionale, Università di Parma, Parco Area delle Scienze 11/A 43100-Parma, Italy
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196
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IGF-1 and ADMA levels are inversely correlated in nondiabetic ankylosing spondylitis patients undergoing anti-TNF-alpha therapy. BIOMED RESEARCH INTERNATIONAL 2014; 2014:671061. [PMID: 25295265 PMCID: PMC4176640 DOI: 10.1155/2014/671061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 08/20/2014] [Indexed: 11/18/2022]
Abstract
Like rheumatoid arthritis, ankylosing spondylitis (AS) is also an inflammatory disease associated with accelerated atherosclerosis and the presence of metabolic syndrome (MeS) features. AS patients often display osteoporosis as well as new bone formation. Insulin-like growth factor 1 (IGF-1) is a protein involved in both inflammation and bone metabolism. In the present study we assessed whether disease activity, systemic inflammation, MeS features, adipokines, and biomarkers of endothelial activation were associated with IGF-1 and insulin-like growth factor binding protein-3 (IGFBP-3) levels in a series of 30 nondiabetic AS patients without CV disease undergoing TNF-α antagonist-infliximab therapy. All determinations were made in the fasting state, immediately before an infliximab infusion. Although no association of IGF-1 and IGFBP-3 levels with angiopoietin-2 or osteopontin was found, an inverse correlation between IGF-1 levels and asymmetric dimethylarginine (ADMA), an endogenous endothelial nitric oxide synthase inhibitor that impairs nitric oxide production and secretion promoting endothelial dysfunction, was found (r=-0.397; P=0.04). However, no significant association was found between IGF-1 and IGFBP-3 levels and disease activity, systemic inflammation, metabolic syndrome features, or adipokines. In conclusion, in nondiabetic patients with AS undergoing periodic anti-TNF-α therapy, IGF-1 and ADMA are inversely correlated.
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197
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Effects of estradiol on transcriptional profiles in atherosclerotic iliac arteries in ovariectomized cynomolgus macaques. Menopause 2014; 21:143-52. [PMID: 23760433 DOI: 10.1097/gme.0b013e31829367c0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVE This study aimed to assess the in vivo effects of estradiol treatment on arterial gene expression in atherosclerotic postmenopausal female monkeys. METHODS Eight ovariectomized cynomolgus monkeys were fed atherogenic diets for 6.5 years. The left iliac artery was biopsied before randomization to the estradiol group (human equivalent dose of 1 mg/d, n = 4) or the vehicle group (n = 4) for 8 months. The right iliac artery was obtained at necropsy. Transcriptional profiles in pretreatment versus posttreatment iliac arteries were compared to assess the responses of atherosclerotic arteries to estradiol. RESULTS Iliac artery plaque size did not differ between the estradiol group and the placebo group at baseline or during the treatment period. Nevertheless, estradiol treatment was associated with increased expression of 106 genes and decreased expression of 26 genes in the iliac arteries. Estradiol treatment increased the expression of extracellular matrix genes, including the α1 chain of type I collagen, the α2 chain of type VI collagen, and fibulin 2, suggestive of an increase in the proportion or phenotype of smooth muscles or fibroblasts in lesions. Also increased were components of the insulin-like growth factor pathway (insulin-like growth factor 1, insulin-like growth factor binding protein 4, and insulin-like growth factor binding protein 5) and the Wnt signaling pathway (secreted frizzled-related protein 2, secreted frizzled-related protein 4, low-density lipoprotein receptor-related protein 6, and Wnt1-inducible signaling pathway protein 2). CONCLUSIONS Estradiol treatment of monkeys with established atherosclerosis affected iliac artery gene expression, suggesting changes in the cellular composition of lesions. Moreover, it is probable that the presence of atherosclerotic plaque affected the gene expression responses of arteries to estrogen.
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198
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Akturk IF, Biyik I, Yalcin AA, Isiksacan N, Celik O, Ozturk D, Erturk M. Impact of insulin like growth factor-1 in development of coronary artery ectasia. Bosn J Basic Med Sci 2014; 14:244-9. [PMID: 25428678 PMCID: PMC4333962 DOI: 10.17305/bjbms.2014.4.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 07/23/2014] [Indexed: 12/13/2022] Open
Abstract
Coronary artery ectasia (CAE) is characterized by inappropriate dilatation of the coronary vasculature. The mechanisms of CAE are not well known. Insulin-like growth factor-1 (IGF-1) may make endothelial cells and smooth muscle cells more sensitive to the effects of growth hormone. In the present study, we hypothesized that IGF-1 may have an impact on the formation of ectasia and aneurysm in arterial system, and aimed to investigate the associations between the presence of CAE and serum IGF-1 levels in patients undergoing coronary angiography. The study included 2.980 subjects undergoing elective diagnostic coronary angiography. We selected 40 patients diagnosed with CAE as CAE group and 44 subjects with absolutely normal coronary arteries were assigned as normal control group. IGF-1 levels were measured in both groups of patients. Groups were similar in terms of age, sex and coronary artery disease risk factors. The serum IGF-1 levels were significantly higher in CAE patients with 109.64 ± 54.64 ng/mL than in controls with 84.76 ± 34.01 ng/mL (p=0.016). HDL levels were lower in ectasia group with 41.5 ± 10.7 mg/dL than controls with 47.7 ± 10.4 mg/dL (p=0.018). By means of logistic regression analysis, high IGF-1 and low HDL levels were found to be independent risk factors for the presence of CAE (p<0.02, p<0.016, respectively). The study revealed that there was a positive correlation between serum IGF-1 levels and presence of CAE, and high IGF-1 levels and low HDL levels were independent risk factors for the presence of CAE. Future studies are needed to confirm these results.
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Affiliation(s)
- Ibrahim Faruk Akturk
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
| | - Ismail Biyik
- Department of Cardiology, Usak State Hospital, Usak, Turkey
| | - Ahmet Arif Yalcin
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
| | - Nilgun Isiksacan
- Department of Biochemistry, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
| | - Omer Celik
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
| | - Derya Ozturk
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
| | - Mehmet Erturk
- Department of Cardiology, Mehmet Akif Ersoy Thoracic and Cardiovascular Surgery Training and Research Hospital, Istanbul, Turkey
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199
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Souza AHO, Farias MIT, Salvatori R, Silva GMF, Santana JAM, Pereira FA, de Paula FJA, Valença EHO, Melo EV, Barbosa RAA, Pereira RMC, Gois-Junior MB, Aguiar-Oliveira MH. Lifetime, untreated isolated GH deficiency due to a GH-releasing hormone receptor mutation has beneficial consequences on bone status in older individuals, and does not influence their abdominal aorta calcification. Endocrine 2014; 47:191-7. [PMID: 24272598 DOI: 10.1007/s12020-013-0118-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Accepted: 11/06/2013] [Indexed: 12/26/2022]
Abstract
The GH/IGF-I axis has essential roles in regulating bone and vascular status. The age-related decrease in GH secretion ("somatopause") may contribute to osteoporosis and atherosclerosis, commonly observed in the elderly. Adult-onset GH deficiency (GHD) has been reported to be associated with reduced bone mineral density (BMD), increased risk of fractures, and premature atherosclerosis. We have shown the young adult individuals with isolated GHD (IGHD) due to a homozygous for the c.57+1G>A GHRH receptor gene mutation have normal volumetric BMD (vBMD), and not develop premature atherosclerosis, despite adverse risk factor profile. However, the bone and vascular impact of lifetime GHD on the aging process remains unknown. We studied a group of ten older IGHD subjects (≥60 years) homozygous for the mutation, comparing them with 20 age- and gender-matched controls (CO). Areal BMD was measured, and vBMD was calculated at the lumbar spine and total hip. Vertebral fractures and abdominal aortic calcifications (expressed as calcium score) were also assessed. Areal BMD was lower in IGHD, but vBMD was similar in the two groups. The percent of fractured individuals was similar, but the mean number of fractures per individual was lower in IGHD than CO. Calcium score was similar in the two groups. A positive correlation was found between calcium score and number of fractures. Untreated lifetime IGHD has beneficial consequences on bone status and does not have a deleterious effect on abdominal aorta calcification.
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Affiliation(s)
- Anita H O Souza
- Division of Endocrinology, Department of Medicine, School of Medicine, Federal University of Sergipe, Aracaju, Brazil
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Spielman LJ, Little JP, Klegeris A. Inflammation and insulin/IGF-1 resistance as the possible link between obesity and neurodegeneration. J Neuroimmunol 2014; 273:8-21. [PMID: 24969117 DOI: 10.1016/j.jneuroim.2014.06.004] [Citation(s) in RCA: 125] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 06/03/2014] [Accepted: 06/04/2014] [Indexed: 12/17/2022]
Abstract
Obesity is a growing epidemic that contributes to several brain disorders including Alzheimer's, Parkinson's, and Huntington's diseases. Obesity could promote these diseases through several different mechanisms. Here we review evidence supporting the involvement of two recently recognized factors linking obesity with neurodegeneration: the induction of pro-inflammatory cytokines and onset of insulin and insulin-like growth factor 1 (IGF-1) resistance. Excess peripheral pro-inflammatory mediators, some of which can cross the blood brain barrier, may trigger neuroinflammation, which subsequently exacerbates neurodegeneration. Insulin and IGF-1 resistance leads to weakening of neuroprotective signaling by these molecules and can contribute to onset of neurodegenerative diseases.
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Affiliation(s)
- Lindsay J Spielman
- Department of Biology, University of British Columbia Okanagan Campus, 3333 University Way, Kelowna, BC, V1V 1V7 Canada
| | - Jonathan P Little
- School of Health and Exercise Sciences, University of British Columbia Okanagan Campus, 3333 University Way, Kelowna, BC, V1V 1V7 Canada
| | - Andis Klegeris
- Department of Biology, University of British Columbia Okanagan Campus, 3333 University Way, Kelowna, BC, V1V 1V7 Canada.
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