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Effect of Calcium Alginate Microsphere Loaded With Vascular Endothelial Growth Factor on Adipose Tissue Transplantation. Ann Plast Surg 2015; 75:644-51. [DOI: 10.1097/sap.0000000000000201] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Lee JB, Shin B, Lee SH, Lee BY, Kim TH, Kim MG, Yoo SD. Exposure assessment of epidermal growth factor to various tissues in mice after intravenous and subcutaneous administration. ACTA ACUST UNITED AC 2015; 67:1519-27. [PMID: 26255780 DOI: 10.1111/jphp.12464] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 06/15/2015] [Indexed: 12/21/2022]
Abstract
OBJECTIVES This study was conducted to examine the tissue distribution of human recombinant epidermal growth factor (EGF) after multiple intravenous and subcutaneous injections in mice. METHODS Male BALB/c mice were divided into (1) EGF 1 mg/kg intravenous dose, (2) EGF 5 mg/kg intravenous dose, (3) drug-free intravenous control, (4) EGF 1 mg/kg subcutaneous dose, (5) EGF 5 mg/kg subcutaneous dose and (6) drug-free subcutaneous control groups. EGF and drug-free dosing solutions were injected by intravenous and subcutaneous injections once a day for 3 days. EGF concentrations in serum and tissues of kidney, liver, lung, small intestine and tongue were determined by ELISA. KEY FINDINGS As the intravenous and subcutaneous doses were increased from 1 to 5 mg/kg, serum Cmax and area under the concentration-time curve (AUC) values were increased dose-proportionally. In lung, tongue and small intestine, increases in AUC were dose-proportional after intravenous injections, but greater than dose-proportional after subcutaneous injections. The fold-increases in Cmax and AUC values were lowest in liver and highest in kidney. CONCLUSION Based on Cmax and AUC data, the systemic exposure achieved by subcutaneous injections was comparable with that achieved by intravenous injections.
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Affiliation(s)
- Jong Bong Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Beomsoo Shin
- College of Pharmacy, Catholic University of Daegu, Gyeongbuk, South Korea
| | - Sang Ho Lee
- Pharmaceutical Research Institute, Daewoong Pharmaceutical Corporation, Yongin, South Korea
| | - Bong Yong Lee
- Pharmaceutical Research Institute, Daewoong Pharmaceutical Corporation, Yongin, South Korea
| | - Tae Hwan Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Min Gi Kim
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
| | - Sun Dong Yoo
- School of Pharmacy, Sungkyunkwan University, Suwon, South Korea
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Barthes J, Özçelik H, Hindié M, Ndreu-Halili A, Hasan A, Vrana NE. Cell microenvironment engineering and monitoring for tissue engineering and regenerative medicine: the recent advances. BIOMED RESEARCH INTERNATIONAL 2014; 2014:921905. [PMID: 25143954 PMCID: PMC4124711 DOI: 10.1155/2014/921905] [Citation(s) in RCA: 133] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Accepted: 06/15/2014] [Indexed: 01/01/2023]
Abstract
In tissue engineering and regenerative medicine, the conditions in the immediate vicinity of the cells have a direct effect on cells' behaviour and subsequently on clinical outcomes. Physical, chemical, and biological control of cell microenvironment are of crucial importance for the ability to direct and control cell behaviour in 3-dimensional tissue engineering scaffolds spatially and temporally. In this review, we will focus on the different aspects of cell microenvironment such as surface micro-, nanotopography, extracellular matrix composition and distribution, controlled release of soluble factors, and mechanical stress/strain conditions and how these aspects and their interactions can be used to achieve a higher degree of control over cellular activities. The effect of these parameters on the cellular behaviour within tissue engineering context is discussed and how these parameters are used to develop engineered tissues is elaborated. Also, recent techniques developed for the monitoring of the cell microenvironment in vitro and in vivo are reviewed, together with recent tissue engineering applications where the control of cell microenvironment has been exploited. Cell microenvironment engineering and monitoring are crucial parts of tissue engineering efforts and systems which utilize different components of the cell microenvironment simultaneously can provide more functional engineered tissues in the near future.
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Affiliation(s)
- Julien Barthes
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-S 1121, “Biomatériaux et Bioingénierie”, 11 rue Humann, 67085 Strasbourg Cedex, France
| | - Hayriye Özçelik
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-S 1121, “Biomatériaux et Bioingénierie”, 11 rue Humann, 67085 Strasbourg Cedex, France
| | - Mathilde Hindié
- Equipe de Recherche sur les Relations Matrice Extracellulaire-Cellules, Université de Cergy-Pontoise, 2 Avenue Adolphe Chauvin, 95302 Cergy Pontoise, France
| | | | - Anwarul Hasan
- Biomedical Engineering and Department of Mechanical Engineering, American University of Beirut, Beirut 1107 2020, Lebanon
- Center for Biomedical Engineering, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Cambridge, MA 02139, USA
- Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Nihal Engin Vrana
- Institut National de la Santé et de la Recherche Médicale (INSERM) UMR-S 1121, “Biomatériaux et Bioingénierie”, 11 rue Humann, 67085 Strasbourg Cedex, France
- Protip SAS, 8 Place de l'Hôpital, 67000, Strasbourg, France
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Bai Y, Yin G, Huang Z, Liao X, Chen X, Yao Y, Pu X. Localized delivery of growth factors for angiogenesis and bone formation in tissue engineering. Int Immunopharmacol 2013; 16:214-23. [PMID: 23587487 DOI: 10.1016/j.intimp.2013.04.001] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2013] [Revised: 04/01/2013] [Accepted: 04/01/2013] [Indexed: 01/14/2023]
Abstract
Angiogenesis is a key component of bone formation. Delivery of growth factors for both angiogenesis and osteogenesis is about to gain important potential as a future therapeutic tool. This review focuses on these growth factors that have dual functions in angiogenesis and osteogenesis, and their localized application. A major hurdle in the clinical development of growth factor therapy so far is how to assure safe and efficacious therapeutic use of such factors and avoid unwanted side effects and toxicity. It is now firmly established from the available information that the type, dose, combinations and delivery kinetics of growth factors all play a decisive role for the success of growth factor therapy. All of these parameters have to be adapted and optimized for each animal model or clinical case. In this review we discuss some important parameters associated with growth factor therapy and present an overview of selected preclinical studies, followed by a conceptual description of both established and proposed delivery strategies meeting therapeutic needs.
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Affiliation(s)
- Yan Bai
- College of Materials Science and Engineering, Sichuan University, Chengdu 610064, PR China
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Park S, Komatsu T, Hayashi H, Yamaza H, Chiba T, Higami Y, Kuramoto K, Shimokawa I. Calorie restriction initiated at middle age improved glucose tolerance without affecting age-related impairments of insulin signaling in rat skeletal muscle. Exp Gerontol 2006; 41:837-45. [PMID: 16920310 DOI: 10.1016/j.exger.2006.06.055] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2006] [Revised: 06/29/2006] [Accepted: 06/30/2006] [Indexed: 10/24/2022]
Abstract
Calorie restriction (CR) may affect glucose tolerance via modulation of the insulin action in skeletal muscle. The present study investigated the effect of CR initiated at middle age in rats bearing glucose intolerance, in comparison with CR at a younger age. Male F344 rats at 2.5 and 18months (mo) of age were fed ad libitum (AL) or 30% CR diets for 4-4.5mo, subjected to glucose tolerance testing, and then sacrificed 15min after intraperitoneal glucose or saline injection to evaluate glucose-stimulated insulin response and subsequent activation of insulin signaling molecules. The protein abundance of phosphorylated (p) insulin receptors, p-Akt, and p-atypical PKC and the membrane fraction of glucose transporter 4 in quadriceps femoris muscle (QFM) were analyzed by EIA or immunoblotting. CR initiated either at young or middle age improved glucose tolerance with a lower serum insulin response to glucose. However, middle-aged CR did not improve aging-related impairments in insulin signaling in QFM. The present results emphasized the possibilities of CR activation of an insulin-independent mechanism in skeletal muscle and also of the involvement of non-muscle tissues in glucose uptake.
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Affiliation(s)
- Seongjoon Park
- Department of Investigative Pathology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki City 852-8523, Japan
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Fleck C, Pertsch J. Influence of epidermal growth factor (EGF) on renal transport of PAH and amino acids in amino acid loaded rats. EXPERIMENTAL AND TOXICOLOGIC PATHOLOGY : OFFICIAL JOURNAL OF THE GESELLSCHAFT FUR TOXIKOLOGISCHE PATHOLOGIE 1999; 51:315-20. [PMID: 10445389 DOI: 10.1016/s0940-2993(99)80013-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
In anaesthetized adult female rats, the influence of epidermal growth factor (EGF) on renal transport of p-amino-hippurate (PAH), electrolytes, and amino acids was investigated. After loading with PAH (200 mg/100 g b.wt. iv.), PAH excretion in EGF treated rats (8 microg/100 g b.wt. subcutaneously for 8 days, twice daily 8 a.m. and 4 p.m.) was increased by about 20 %. Continuous infusions of glutamine, arginine (both 50 mg/100 g b.wt. per hour), or alanine (90 mg/ 100 g b.wt. per hour) were followed by an increase in the fractional excretion (FE) of the administered amino acids as well as of the other endogenous amino acids. Under load conditions (alanine, arginine or glutamine), EGF pretreatment was followed by a stimulation of renal amino acid reabsorption. These changes in amino acid transport were connected with a significant reduction of GFR after EGF pre-treatment (0.96+/-0.10 vs. 0.62+/-0.07 ml/min x 100 g b.wt.), with a distinct increase in sodium excretion (2.98+/-0.55 vs. 4.97+/-0.71 microval/100 g b.wt. x 20 min) and with a retarded normal kidney weight gain (874+/-18 vs. 775+/-32 mg/100 g b.wt.). A simultaneous PAH load reduced amino acid reabsorption as a sign of overloading of renal tubular transport capacity, but in EGF pretreated animals the amino acid excretion was only slightly increased under these conditions.
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Affiliation(s)
- C Fleck
- Institute of Pharmacology and Toxicology, Friedrich Schiller University of Jena, Germany.
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Fleck C, Pertsch J. Epidermal growth factor (EGF) increases the renal amino acid transport capacity in amino acid loaded rats. Amino Acids 1999; 15:307-20. [PMID: 9891756 DOI: 10.1007/bf01320896] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In anaesthetized adult female rats, the influence of epidermal growth factor (EGF) on renal amino acid handling was investigated in glutamine, arginine (both 50 mg/100 g b.wt. per hour), or alanine (90 mg/100 g b.wt. per hour) loaded animals. Continuous infusions of the three amino acids were followed by an increase in the fractional excretion (FE) of the administered amino acids as well as of the other endogenous amino acids. Under load conditions (alanine, arginine or glutamine), EGF pretreatment (8 micrograms/100 g b.wt. subcutaneously for 8 days, twice daily 8 a.m. and 4 p.m.) was followed by a stimulation of renal amino acid reabsorption. The increase in the fractional excretion of the administered amino acids was significantly lower than in non-EGF-treated rats. These changes in amino acid transport were connected with a significant reduction of GFR after EGF pretreatment (0.96 +/- 0.10 vs. 0.62 +/- 0.07 ml/min x 100 g b.wt.) and a distinct increase in sodium excretion (2.98 +/- 0.55 vs. 4.97 +/- 0.71 muval/100 g b.wt. x 20 min). After loading with p-aminohippurate (PAH; 200 mg/100 g b.wt.), PAH excretion in EGF rats was increased by about 20%, whereas urinary protein excretion was lower in EGF pretreated rats (control: 0.45 +/- 0.04 vs. EGF: 0.18 +/- 0.03 mg/100 g b.wt. x 20 min). The PAH load reduced amino acid reabsorption as a sign of overloading of renal tubular transport capacity, but in EGF pretreated animals the amino acid excretion was only slightly increased under these conditions. Furthermore, EGF pretreatment depressed normal kidney weight gain significantly (874 +/- 18 vs. 775 +/- 32 mg/100 g b.wt.). EGF can improve the renal tubular transport capacity, but, compared to well-known stimulators of renal transport like dexamethasone or triiodothyronine, its effect is only of a moderate degree.
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Affiliation(s)
- C Fleck
- Institute of Pharmacology and Toxicology, Friedrich Schiller University of Jena, Federal Republic of Germany.
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Abstract
The ability of protein agents to modulate cellular behaviors, such as motility, proliferation, adhesion and function, is the subject of intense research; new therapies involving proteins will likely result. Unfortunately, many proteins have short half-lives and the potential for toxicity after systemic delivery, so traditional routes of administration are not appropriate. Alternate methods for sustained delivery of these agents to the desired cells and tissues in biologically active conformations and concentrations are necessary. Techniques similar to those long used in the controlled delivery of drugs have been used to administer certain growth factors to cells and tissues; although clinical success has been limited to date, studies in animal models suggest the potential for tremendous advances in the near future. This review outlines the basic technology of controlled protein delivery using polymeric materials, and discusses some of the techniques under investigation for the efficient administration of proteins in tissue engineering.
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Abstract
Growth factors encourage tissue regeneration and differentiation, accelerate wound healing, and modulate neural repair. Thus, growth factor administration may become a useful treatment for neurodegenerative diseases, such as Alzheimer's disease or Parkinson's disease, which are characterized by the degeneration of neuronal cell populations. Controlled-release polymer delivery systems may be an important technology in enabling the prevention of neuronal degeneration, or even the stimulation of neuronal regeneration, by providing a sustained release of growth factors to promote the long-term survival of endogenous or transplanted cells.
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Affiliation(s)
- M F Haller
- School of Chemical Engineering, Cornell University, Ithaca, NY 14853, USA
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Santer R, Borlinghaus P, Sievers E, Segura E, Lamerz R. Urinary excretion of epidermal growth factor and transforming growth factor-alpha in breast-fed and formula-fed infants. Acta Paediatr 1993; 82:1024-8. [PMID: 8155917 DOI: 10.1111/j.1651-2227.1993.tb12802.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Urinary epidermal growth factor (EGF) and transforming growth factor-alpha (TGF-alpha) concentrations were determined by radioimmunoassay in a longitudinal study analyzing 348 24-h urine specimens of 32 infants (16 breast-fed, 16 formula-fed) during the first 16 weeks of life. EGF excretion showed a statistically significant increase from 6.0 +/- 2.5 to 14.1 +/- 4.9 micrograms/g creatinine (mean +/- 1 SD) during the investigation period. TGF-alpha levels were fairly constant throughout this period. Comparing breast-fed infants, with more than 100-fold higher ingestion of EGF and TGF-alpha, with formula-fed infants, no significant differences in urinary EGF and TGF-alpha excretion were observed. These results do not rule out a systemic effect of EGF and TGF-alpha after intestinal absorption in breast-fed infants. The results suggest, however, that urinary EGF and TGF-alpha originate mainly from sources other than intestinal absorption.
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Affiliation(s)
- R Santer
- Department of Pediatrics, Christian-Albrechts-University, Kiel, Germany
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Lev-Ran A, Hwang DL, Ben-Ezra J, Williams LE. Origin of urinary epidermal growth factor in humans: excretion of endogenous EGF and infused [131I]-human EGF and kidney histochemistry. Clin Exp Pharmacol Physiol 1992; 19:667-73. [PMID: 1424295 DOI: 10.1111/j.1440-1681.1992.tb00402.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
1. This study examined (i) whether blood-infused epidermal growth factor (EGF) can pass into urine; (ii) whether infused labelled EGF behaves like endogenous plasma immunoreactive EGF; and (iii) which parts of the human nephron show morphological evidence of EGF synthesis? 2. We infused human [131I]-EGF into a volunteer. After 6 min, only 66% of the plasma counts represented intact EGF. At the end of infusion, the T1/2 of EGF was calculated to be 1.6 min. The tail of the curve lasted for at least another 2 h. The total excretion of the labelled EGF was 2.45% of the infused dose and was proportional to the urine volume. 3. After a water load, the excretion of endogenous EGF was, on the contrary, inversely related to urine volume. 4. Immunohistochemically, human kidneys were not stained by monoclonal anti-EGF antibodies but showed positive in situ hybridization for EGF mRNA in the nuclei of glomerular mesangial cells, distal convoluted tubules and collecting tubules. 5. We conclude that human kidneys synthesize EGF and release it into urine. Plasma-derived EGF constitutes under normal conditions only a small part of the urinary EGF. Contrasting volume-dependency of the excretion of endogenous and [131I]-EGF requires further study and cautions against extrapolating results obtained with labelled EGF to physiological conditions.
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Affiliation(s)
- A Lev-Ran
- Department of Diabetes and Endocrinology, City of Hope National Medical Center, Duarte, California 91010
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Konturek JW, Buesing M, Hopt UT, Stachura J, Becker HD, Konturek SJ. Secretion of protein and epidermal growth factor (EGF) by transplanted human pancreas. INTERNATIONAL JOURNAL OF PANCREATOLOGY : OFFICIAL JOURNAL OF THE INTERNATIONAL ASSOCIATION OF PANCREATOLOGY 1992; 12:23-9. [PMID: 1527447 DOI: 10.1007/bf02927067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Epidermal growth factor (EGF) has been localized in human salivary and Brunner's glands and found to stimulate the proliferation of gastrointestinal and pancreatic tissues in animals, but little is known about EGF in human pancreas. This study was designed to determine the distribution and release of EGF in the pancreas and to assess the secretion of EGF and protein by the transplanted human pancreas. The peroxidase antiperoxidase (PAP) immunocytochemical method with anti-hEGF showed that EGF was restricted mainly to the excretory cells lining pancreatic ducts. The EGF immunoreactivity in the pancreatic tissue averaged about 15 +/- 0.5 micrograms/g of tissue wt. The concentration and output of EGF in the pancreatic juice were, respectively, about 3.4 +/- 0.7 ng/mL and 68 + 12 ng/h in basal secretion collected from the whole pancreatic transplant. A significant increase in EGF release from this transplant started about 2 h after its reperfusion and was accompanied by a parallel increase in protein output. Injection of iv secretion (1 U/kg) resulted in a transient rise in EGF output, probably as a result of washout by increased vol flow, whereas HCCK (1 U/kg) caused more prolonged release of EGF accompanied by a marked stimulation of protein secretion. Ingestion of a mixed meal caused an immediate and sustained increment in EGF output, and protein output showed a more protracted increase, reaching its peak in the second postprandial hour. Fractionation of an extract of pancreatic juice on G-5O Sephadex superfine column revealed that EGF immunoreactivity emerged as a major peak in the same position as authentic human EGF (hEGF).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- J W Konturek
- Allgemeine Chirurgie und Poliklinik, Universitat Tubingen, Germany
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