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Rykina-Tameeva N, Samra JS, Sahni S, Mittal A. Non-Surgical Interventions for the Prevention of Clinically Relevant Postoperative Pancreatic Fistula-A Narrative Review. Cancers (Basel) 2023; 15:5865. [PMID: 38136409 PMCID: PMC10741911 DOI: 10.3390/cancers15245865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
Clinically relevant postoperative pancreatic fistula (CR-POPF) is the leading cause of morbidity and mortality after pancreatic surgery. Post-pancreatectomy acute pancreatitis (PPAP) has been increasingly understood as a precursor and exacerbator of CR-POPF. No longer believed to be the consequence of surgical technique, the solution to preventing CR-POPF may lie instead in non-surgical, mainly pharmacological interventions. Five databases were searched, identifying eight pharmacological preventative strategies, including neoadjuvant therapy, somatostatin and its analogues, antibiotics, analgesia, corticosteroids, protease inhibitors, miscellaneous interventions with few reports, and combination strategies. Two further non-surgical interventions studied were nutrition and fluids. New potential interventions were also identified from related surgical and experimental contexts. Given the varied efficacy reported for these interventions, numerous opportunities for clarifying this heterogeneity remain. By reducing CR-POPF, patients may avoid morbid sequelae, experience shorter hospital stays, and ensure timely delivery of adjuvant therapy, overall aiding survival where prognosis, particularly in pancreatic cancer patients, is poor.
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Affiliation(s)
- Nadya Rykina-Tameeva
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
- Kolling Institute of Medical Research, University of Sydney, St Leonards, NSW 2065, Australia
| | - Jaswinder S. Samra
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
- Upper GI Surgical Unit, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
- Upper GI Surgical Unit, North Shore Private Hospital, St Leonards, NSW 2065, Australia
- Australian Pancreatic Centre, St Leonards, NSW 2065, Australia
| | - Sumit Sahni
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
- Kolling Institute of Medical Research, University of Sydney, St Leonards, NSW 2065, Australia
- Australian Pancreatic Centre, St Leonards, NSW 2065, Australia
| | - Anubhav Mittal
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2050, Australia
- Upper GI Surgical Unit, Royal North Shore Hospital, St Leonards, NSW 2065, Australia
- Upper GI Surgical Unit, North Shore Private Hospital, St Leonards, NSW 2065, Australia
- Australian Pancreatic Centre, St Leonards, NSW 2065, Australia
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The science of anastomotic healing. SEMINARS IN COLON AND RECTAL SURGERY 2022; 33. [DOI: 10.1016/j.scrs.2022.100879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yoon S, Kim H, Cho HY, Lee HJ, Kim H, Lee HC, Jang JY. Effect of postoperative non-steroidal anti-inflammatory drugs on anastomotic leakage after pancreaticoduodenectomy. Korean J Anesthesiol 2021; 75:61-70. [PMID: 34024090 PMCID: PMC8831434 DOI: 10.4097/kja.21096] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 05/21/2021] [Indexed: 11/10/2022] Open
Abstract
Background Although the association between an increase in anastomotic leakage (AL) and non-steroidal anti-inflammatory drugs (NSAIDs) has been reported in gastrointestinal surgeries, this issue has rarely been addressed for pancreaticoduodenectomy (PD). We aimed to investigate the association between postoperative NSAIDs administration and clinically relevant AL (CR-AL) following PD. Method We retrospectively evaluated 2,163 consecutive patients who underwent PD between 2007 and 2019. The patients were divided into two groups: patients who received and did not receive NSAIDs by postoperative day (POD) 5. We conducted a propensity score analysis using inverse probability of treatment weighting (IPTW) to adjust the baseline differences between both groups. We compared the occurrence of CR-AL and other postoperative outcomes before and after IPTW. Further, we used the multivariable binary logistic regression method for a sensitivity analysis for CR-AL. Results A total of 2,136 patients were included in the analysis. Of these, 222 (10.4%) received NSAIDs by POD 5. The overall occurrence rate of CR-AL was 14.9%. After IPTW, postoperative NSAIDs were significantly associated with CR-AL (odds ratio [OR] 1.24, 95% confidence interval [CI], 1.05-1.47; P=0.012), prolonged postoperative hospitalization (OR 1.31, 95% CI 1.14-1.50, P<0.001), and unplanned readmission within 30 days postoperatively (OR 1.48, 95% CI 1.15-1.91, P=0.002). However, this association was not consistent in the sensitivity analysis. Conclusion Postoperative NSAIDs use was significantly associated with an increase in CR-AL incidence following PD. However, sensitivity analysis failed to show its association, which precludes a firm conclusion of its detrimental effect.
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Affiliation(s)
- Susie Yoon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyerin Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Hye-Yeon Cho
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea
| | - Ho-Jin Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hongbeom Kim
- Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hyung-Chul Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jin-Young Jang
- Department of Surgery, Seoul National University Hospital, Seoul, Republic of Korea.,Department of Surgery, Seoul National University College of Medicine, Seoul, Republic of Korea
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Shi C, Chen W, Chen B, Shan T, Jia W, Hou X, Li L, Ye G, Dai J. Bladder regeneration in a canine model using a bladder acellular matrix loaded with a collagen-binding bFGF. Biomater Sci 2018; 5:2427-2436. [PMID: 29046907 DOI: 10.1039/c7bm00806f] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Bladder reconstruction remains challenging for urological surgery due to lack of suitable regenerative scaffolds. In a previous study, we had used a collagen-binding basic fibroblast growth factor (CBD-bFGF) to bind bFGF to the collagen scaffold, which could promote bladder regeneration in rats. However, the limited graft size in rodent models cannot provide enough evidence to demonstrate the repair capabilities of this method for severely damaged bladders in humans or large animals. In this study, the CBD-bFGF was used to activate a bladder acellular matrix (BAM) scaffold, and the CBD-bFGF/BAM functional scaffold was assessed in a canine model with a large segment defect (half of the entire bladder was resected). The results demonstrated that the functional biomaterials could promote bladder smooth muscle, vascular, and nerve regeneration and improve the function of neobladders. Thus, the CBD-bFGF/BAM functional scaffold may be a promising biomaterial for bladder reconstruction.
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Affiliation(s)
- Chunying Shi
- Department of Human anatomy, Histology and Embryology, College of Medicine, Qingdao University, Qingdao, 266021, China
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5
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Sun K, Li R, Li H, Li D, Jiang W. Comparison of three-dimensional printing for fabricating silk fibroin-blended scaffolds. INT J POLYM MATER PO 2017. [DOI: 10.1080/00914037.2017.1354204] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Kai Sun
- Tianjin First Center Hospital, Department of Orthopaedic, Tianjin, China
| | - Ruixin Li
- Institute of Medical Equipment, Academy of Military and Medical Sciences, Department of Biomaterial, Tianjin, China
| | - Hui Li
- Tianjin Medical University General Hospital, Department of Orthopaedic, Tianjin, China
| | - Dong Li
- Tianjin Medical University General Hospital, Department of Orthopaedic, Tianjin, China
| | - Wenxue Jiang
- Tianjin First Center Hospital, Department of Orthopaedic, Tianjin, China
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6
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Sun K, Li R, Jiang W, Sun Y, Li H. Comparison of three-dimensional printing and vacuum freeze-dried techniques for fabricating composite scaffolds. Biochem Biophys Res Commun 2016; 477:1085-1091. [PMID: 27404126 DOI: 10.1016/j.bbrc.2016.07.050] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 07/09/2016] [Indexed: 01/03/2023]
Abstract
In this study, the performances of different preparation methods of the scaffolds were analyzed for chondrocyte tissue engineering. Silk fibroin/collagen (SF/C) was fabricated using a vacuum freeze-dried technique and by 3D printing. The porosity, water absorption expansion rates, mechanical properties, and pore sizes of the resulting materials were evaluated. The proliferation and metabolism of the cells was detected at different time points using an MTT assay. Cell morphologies and distributions were observed by histological analysis and scanning electron microscopy (SEM). The porosity, water absorption expansion rate, and Young's modulus of the material obtained via 3D printing were significantly higher than those obtained by the freeze-dried method, while the pore size did not differ significantly between the two methods. MTT assay results showed that the metabolism of cells seeded on the 3D printed scaffolds was more viable than the metabolism on the freeze-dried material. H&E staining of the scaffolds revealed that the number of cells in the 3D printed scaffold was higher in comparison to a similar measurement on the freeze-dried material. Consequently, stem cells grew well inside the 3D printed scaffolds, as measured by SEM, while the internal structure of the freeze-dried scaffold was disordered. Compared with the freeze-dried technique, the 3D printed scaffold exhibited better overall performance and was more suitable for cartilage tissue engineering.
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Affiliation(s)
- Kai Sun
- Tianjin First Center Hospital, No. 24 Fukang Road, Tianjin, TJ 300192, China
| | - Ruixin Li
- Institute of Medical Equipment, Academy of Military and Medical Sciences, No. 106, Wandong Street, Hedong District, Tianjin 300000, China
| | - Wenxue Jiang
- Tianjin First Center Hospital, No. 24 Fukang Road, Tianjin, TJ 300192, China.
| | - Yufu Sun
- Tianjin First Center Hospital, No. 24 Fukang Road, Tianjin, TJ 300192, China
| | - Hui Li
- Tianjin Medical University General Hospital, No. 154 Anshan Road, Tianjin, TJ 300052, China
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7
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Zhang HX, Zhang XP, Xiao GY, Hou Y, Cheng L, Si M, Wang SS, Li YH, Nie L. In vitro and in vivo evaluation of calcium phosphate composite scaffolds containing BMP-VEGF loaded PLGA microspheres for the treatment of avascular necrosis of the femoral head. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2016; 60:298-307. [DOI: 10.1016/j.msec.2015.11.055] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/24/2015] [Accepted: 11/20/2015] [Indexed: 10/22/2022]
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8
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Yang JW, Zhang YF, Sun ZY, Song GT, Chen Z. Dental pulp tissue engineering with bFGF-incorporated silk fibroin scaffolds. J Biomater Appl 2015; 30:221-9. [PMID: 25791684 DOI: 10.1177/0885328215577296] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The clinical translation of regenerative endodontics demands further development of suitable scaffolds. Here, we assessed the possibility of using silk fibroin scaffold for pulp regeneration with dental pulp stem cells (DPSCs) and basic fibroblast growth factor (bFGF) in ectopic root canal transplantation model. Porous silk fibroin scaffolds were fabricated using freeze-drying technique (with or without bFGF incorporation), and characterized by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy. DPSCs were isolated, characterized, seeded onto scaffolds, and inserted into the tooth root fragments. Cell viability and morphology were tested in the 3D model in vitro using CCK8 assay and SEM. Furthermore, the ectopic transplantation model was used to verify the generation of pulp-like tissue in DPSCs seeded silk fibroin scaffold with bFGF, as examined by histological analysis. DPSCs seeded in silk fibroin scaffold survived, exhibited cytoplasmic elongation in scaffolds at least 4 weeks in culture. bFGF promoted DPSCs viability in tooth fragments/scaffolds (TSS) between 7 and 28 days. Pulp-like tissue was generated in the bFGF-incorporated TSS with DPSCs. Histologically, the generated tissue was shown to be with well vascularity, have new matrix deposition and dentin-like tissue formation, and consist of both the transplanted and host-derived cells. Collectively, these data support the use of bFGF-incorporated silk fibroin scaffold as a highly promising scaffold candidate for future treatment concepts in regenerative endodontics to save teeth.
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Affiliation(s)
- Jing-Wen Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Yu-Feng Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Zhe-Yi Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Guang-Tai Song
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China
| | - Zhi Chen
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, PR China
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9
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Xing SC, Meng DM, Chen Y, Jiang G, Liu XS, Li N, Yan YY, Li CG. Study on the diversity of Bacteroides and Clostridium in patients with primary gout. Cell Biochem Biophys 2014; 71:707-15. [PMID: 25344643 DOI: 10.1007/s12013-014-0253-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To analyze the diversity of both Bacteroides and Clostridium in patients with primary gout and the difference from that of normal individuals. And to investigate the relationship between the primary gout and the intestinal flora. Fecal samples of 90 cases with the primary gout and 94 cases normal comparison group were selected, together with the cases that match the filter criteria. The DNA is extracted from the feces. 16S rRNA specific primers of both Bacteroides and Clostridium were adopted for the PCR amplification. The molecular fingerprints of Bacteroides and Clostridium in both the primary gout group and the normal control group were obtained through DGGE and subjected for further analysis on both the diversity and the similarity. Compared with normal individuals, the number of bands and Shannon-Weaver (H') of Bacteroides in patients with primary gout was not reduced, but significantly decreased in Clostridium. Furthermore, the intra-group and inter-group similarity of both Bacteroides and Clostridium were lower. The primary gout has caused the structural change of both Bacteroides and Clostridium, inducing the low similarity, especially for Clostridium. It has statistic significance. The gut predominant flora may play an important role in the development of primary gout.
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Affiliation(s)
- Shi-Chao Xing
- The Affiliated Hospital of Qingdao University, Qingdao, 266003, Shandong, China,
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10
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Hirai K, Tabata Y, Hasegawa S, Sakai Y. Enhanced intestinal anastomotic healing with gelatin hydrogel incorporating basic fibroblast growth factor. J Tissue Eng Regen Med 2013; 10:E433-E442. [PMID: 24130076 DOI: 10.1002/term.1835] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 05/14/2013] [Accepted: 09/02/2013] [Indexed: 11/09/2022]
Abstract
Anastomotic leakage is a common complication of intestinal surgery. In an attempt to resolve this issue, a promising approach is enhancement of anastomotic wound healing. A method for controlled release of basic fibroblast growth factor (bFGF) using a gelatin hydrogel was developed with the objective of investigating the effects of this technology on intestinal anastomotic healing. The small intestine of Wistar rats was cut, end-to-end anastomosis was performed and rats were divided into three groups: bFGF group (anastomosis wrapped with a hydrogel sheet incorporating bFGF), PBS group (wrapped with a sheet incorporating phosphate-buffered saline solution) and NT group (no additional treatment). Degradation profiles of gelatin hydrogels in vivo and histological examinations were performed using gelatin hydrogels with various water contents and bFGF concentrations to define the optimal bFGF dose and hydrogel biodegradability. The anastomotic wound healing process was evaluated by histological examinations, adhesion-related score and bursting pressure. The optimal water content of the hydrogel and bFGF dose was determined as 96% and 30 µg per sheet, respectively. Application of bFGF significantly enhanced neovascularization, fibroblast infiltration and collagen production around the anastomotic site when compared with the other groups. Bursting pressure was significantly increased in the bFGF group. No significant difference was observed in the adhesion-related score among the groups and no anastomotic obstruction and leakage were observed. Therefore controlled release of bFGF enhanced healing of an intestinal anastomosis during the early postoperative period and is a promising method to suppress anastomotic leakage. Copyright © 2013 John Wiley & Sons, Ltd.
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Affiliation(s)
- Kenjiro Hirai
- Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Japan.,Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Japan
| | - Yasuhiko Tabata
- Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Japan.
| | - Suguru Hasegawa
- Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Japan
| | - Yoshiharu Sakai
- Division of Gastrointestinal Surgery, Department of Surgery, Graduate School of Medicine, Kyoto University, Japan
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Rijcken E, Sachs L, Fuchs T, Spiegel HU, Neumann PA. Growth factors and gastrointestinal anastomotic healing. J Surg Res 2013; 187:202-10. [PMID: 24290527 DOI: 10.1016/j.jss.2013.10.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 09/16/2013] [Accepted: 10/08/2013] [Indexed: 12/20/2022]
Abstract
BACKGROUND Failure of anastomotic healing in the gastrointestinal tract is a major source of surgery-related morbidity, repeated surgical procedures, and impaired quality of life. Growth factors have been shown to be involved in healing processes in various tissues including the gastrointestinal tract. This opens the perspective to use growth factors therapeutically to support impaired anastomotic healing. The aim of the present study was to review the particular role of several growth factors in different phases of anastomotic healing, experimental approaches of growth factor application, and to discuss possibilities and limitations of growth factor-directed interventions in gastrointestinal surgery. MATERIALS AND METHODS A PubMed search was performed to examine the potential role of fibroblast growth factor, epidermal growth factor, heparin binding EGF-like growth factor, transforming growth factor β, insulin-like growth factor I, vascular endothelial growth factor, and platelet-derived growth factor during anastomotic healing. RESULTS Growth factors show beneficial effects on a broad range of cell types and regulate various processes during all phases of tissue healing. Despite extensive research in the field of growth factors, additional evidence is needed before translating into a clinical setting. CONCLUSIONS Future research should focus on adequate sustained but limited drug delivery. Undesired side effects, such as formation of strictures, development of peritoneal adhesions, and potential induction of malignancies, have to be reflected. Although growth factor application is currently far from clinical routine in gastrointestinal surgery, it might find application in selected patients at risk for impaired anastomotic healing, such as patients with long-time steroid therapy, immunosuppressives, inflammatory disorders, sepsis, hemodynamic shock, malnutrition, or neoadjuvant radiochemotherapy.
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Affiliation(s)
- Emile Rijcken
- Department of General and Visceral Surgery, Muenster University Hospital, Germany; Department of Surgical Research, Muenster University Hospital, Germany.
| | - Larissa Sachs
- Department of General and Visceral Surgery, Muenster University Hospital, Germany; Department of Surgical Research, Muenster University Hospital, Germany
| | - Thomas Fuchs
- Department of Surgical Research, Muenster University Hospital, Germany; Department of Trauma, Hand and Reconstructive Surgery, Muenster University Hospital, Germany
| | | | - Philipp-Alexander Neumann
- Department of General and Visceral Surgery, Muenster University Hospital, Germany; Department of Surgical Research, Muenster University Hospital, Germany
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Wu J, Mao Z, Hong Y, Han L, Gao C. Conjugation of Basic Fibroblast Growth Factor on a Heparin Gradient for Regulating the Migration of Different Types of Cells. Bioconjug Chem 2013; 24:1302-13. [DOI: 10.1021/bc300670t] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Jindan Wu
- MOE Key Laboratory
of Macromolecular
Synthesis and Functionalization, Department of Polymer
Science and Engineering, Zhejiang University, Hangzhou 310027, China
- MOE Key Laboratory of Advanced Textile Materials & Manufacturing Technology, College of Materials and Textile, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhengwei Mao
- MOE Key Laboratory
of Macromolecular
Synthesis and Functionalization, Department of Polymer
Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yifeng Hong
- MOE Key Laboratory
of Macromolecular
Synthesis and Functionalization, Department of Polymer
Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Lulu Han
- MOE Key Laboratory
of Macromolecular
Synthesis and Functionalization, Department of Polymer
Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Changyou Gao
- MOE Key Laboratory
of Macromolecular
Synthesis and Functionalization, Department of Polymer
Science and Engineering, Zhejiang University, Hangzhou 310027, China
- State Key Laboratory of Diagnosis
and Treatment for Infectious Diseases, First Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310003, China
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Gao JM, Yan J, Li R, Li M, Yan LY, Wang TR, Zhao HC, Zhao Y, Yu Y, Qiao J. Improvement in the quality of heterotopic allotransplanted mouse ovarian tissues with basic fibroblast growth factor and fibrin hydrogel. Hum Reprod 2013; 28:2784-93. [DOI: 10.1093/humrep/det296] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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14
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Zhou J, Zhao Y, Wang J, Zhang S, Liu Z, Zhen M, Liu Y, Liu P, Yin Z, Wang X. Therapeutic angiogenesis using basic fibroblast growth factor in combination with a collagen matrix in chronic hindlimb ischemia. ScientificWorldJournal 2012; 2012:652794. [PMID: 22666143 PMCID: PMC3362026 DOI: 10.1100/2012/652794] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 02/23/2012] [Indexed: 11/26/2022] Open
Abstract
Although therapeutic angiogenesis by angiogenic cytokines is a feasible strategy to improve regional blood flow in ischemic regions, the optimal delivery mode needs to be established. Here we designed a complex of collagen matrix (CM) and basic fibroblast growth factor (bFGF) and evaluated its proangiogenic effect in ischemic hindlimbs. The bFGF-CM was prepared using lyophilization. The morphology, porosity and toxicity of CM were examined. The bFGF releasing profile and bioactivity of released bFGF were assessed. bFGF-CM was intramuscularly implanted into the rabbit ischemic hindlimb model. Oxygen saturation parameters (OSP) of ischemic hindlimbs was measured to evaluate the extremity perfusion at intervals. Histological examination was performed to evaluate the level of angiogenesis. The CM and bFGF-CM were of identical multiporous structure lacking cytotoxicity. The releasing profile lasted 10 days and the released bFGF remained bioactive. OSP in bFGF-CM group was significantly higher
than that in CM, bFGF and ischemic groups at 2 and 4 weeks. The number of capillaries and mature vessels in bFGF-CM group were significantly greater than that in untreated control, CM and bFGF groups. Therefore, bFGF-CM enables the safe and effective long-term release of bFGF with improved angiogenesis in ischemic hindlimbs compared with CM devoid of bFGF.
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Affiliation(s)
- Jianyin Zhou
- Department of Hepatobiliary Surgery, Zhongshan Hospital, Xiamen University, Xiamen 361001, China
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15
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Nitta N, Nitta-Seko A, Sonoda A, Watanabe S, Tsuchiya K, Murata K, Tabata Y. Vascular regeneration by pinpoint delivery of growth factors using a microcatheter reservoir system in a rabbit hind-limb ischemia model. Exp Ther Med 2012; 4:201-204. [PMID: 23139710 DOI: 10.3892/etm.2012.574] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 05/04/2012] [Indexed: 01/18/2023] Open
Abstract
The purpose of this study was to compare the results of delivering low doses of growth factor iteratively (20 μg x5) via a reservoir system with results obtained following a single administration of 100 μg of growth factor. The delivery systems using gelatin microspheres (GMS) facilitate the controlled release of drugs. The controlled release of growth factors at specific sites is essential for vascular regeneration. An ischemic hind-limb model was established in nine rabbits. A reservoir system was implanted in each rabbit. GMS impregnated with basic fibroblast growth factor (bFGF) through an indwelling 2-Fr catheter was infused in the reservoir system. The rabbits were divided into three equal groups: group 1 received 20 μg iteratively (x5) via the reservoir, a single dose of 100 μg growth factor was administered to group 2 and group 3 was the saline control. The therapeutic effects were evaluated by measuring the thigh temperature, blood pressure and blood flow. An immunohistological analysis was also performed for CD31. No significant difference was observed between preand post-treatment (4 weeks following bFGF infusion) in the thigh temperature, blood pressure and blood flow results from each group. Pathological analysis revealed that the number of regenerated vessels was significantly higher in the group treated iteratively with low-dose bFGF.
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Affiliation(s)
- Norihisa Nitta
- Department of Radiology, Shiga University of Medical Science, Seta, Otsu, Shiga 520-2192
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16
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Aktas RG, Kayton RJ. Ultrastructural immunolocalization of basic fibroblast growth factor in endothelial cells: morphologic evidence for unconventional secretion of a novel protein. J Mol Histol 2011; 42:417-25. [PMID: 21830143 DOI: 10.1007/s10735-011-9345-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 07/23/2011] [Indexed: 11/25/2022]
Abstract
Basic fibroblast growth factor (bFGF) is one of the most potent angiogenic factors. Unlike many other growth factors, bFGF lacks a classic peptide sequence for its secretion. Recent studies suggest that there is an unconventional secretory pathway for this growth factor. The aim of this study was to identify the specific location of bFGF in endothelial cells and to find morphologic evidences concerning its synthesis, storage and release from endothelial cells. The capillaries in hippocampus, adrenal gland, kidney, peripheral nerves as well as the vessels in connective tissues were analysed by using immunogold labeling techniques at electron microscope level. Results show that endogenous bFGF is mainly located in the nuclei of endothelial cells. Slight immunoreactivity is found in the cytoplasm. Immunolabeling is notably absent in pinocytotic vesicles, Golgi complexes, endoplasmic reticulum, nuclear membrane and intercellular junctions. These results provide morphologic evidence suggesting that endothelial cells might export bFGF via unique cellular pathways that are clearly distinct from classical signal peptide mediated secretion and/or release of this protein could be directly through mechanically induced disruptions of these cells. The current study support the recent hypothesis related with unconventional secretory pathway for bFGF as some other "cargo" proteins.
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Affiliation(s)
- Ranan Gulhan Aktas
- Histology and Embryology, School of Medicine, Koc University, Rumelifeneri Yolu, Sariyer, 34450 Istanbul, Turkey.
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