1
|
Yu F, Yuan Y, Xu H, Niu S, Han N, Zhang Y, Yin X, Kou Y, Jiang B. Neutrophil peptide-1 promotes the repair of sciatic nerve injury through the expression of proteins related to nerve regeneration. Nutr Neurosci 2020; 25:631-641. [PMID: 33054687 DOI: 10.1080/1028415x.2020.1792617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Objectives Small-molecule polypeptide neutrophil peptide 1 (NP-1) was reported to promote the regeneration of the sciatic nerve after denervation, but the mechanisms underlying this effect of NP-1 are unclear. Here, we established a Sprague-Dawley rat model of crush injury to study the effect of a single intermuscular injection of NP-1 on the repair of injured peripheral nerves and elucidate the possible underlying mechanism.Methods 39 rats were randomly selected to join this study and divided into the blank control group (normal group, n=9), experimental group (NP-1 group, n=15), and negative control group (NS group, n=15). The dynamic expression of cytokines in different groups of nerve tissues during Wallerian degeneration was observed using protein chips at different time points after injury. Recovery of injured nerves was determined based on the general condition, local gross morphology of the nerve suture site, sciatic nerve function index, neuroelectrophysiology, and osmic acid staining at 6 weeks after the surgery. The recovery of effector function was determined based on wet weight, hematoxylin-eosin staining, modified Gomori staining, and nicotinamide adenine dinucleotide-tetrazolium reductase staining at 6 weeks after the surgery.Results It was found that a single topical administration of NP-1 promoted sciatic nerve regeneration after crush injury and affected the expression of proteins related to neurotrophy, inflammation, cell chemotaxis, and cell generation pathways.
Collapse
Affiliation(s)
- Fei Yu
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,National & Local Joint Engineering Research Center of Orthopaedic Biomaterials, Department of Bone & Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, People's Republic of China
| | - Yusong Yuan
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,Diabetic Foot Treatment Center, Peking University People's Hospital, Peking University, Beijing, People's Republic of China
| | - Hailin Xu
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,Diabetic Foot Treatment Center, Peking University People's Hospital, Peking University, Beijing, People's Republic of China
| | - Suping Niu
- Office of Academic Research, Peking University People's Hospital, Beijing, People's Republic of China
| | - Na Han
- Office of Academic Research, Peking University People's Hospital, Beijing, People's Republic of China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing, People's Republic of China
| | - Yajun Zhang
- National Center for Trauma Medicine, Peking University People's Hospital, Beijing, People's Republic of China
| | - Xiaofeng Yin
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing, People's Republic of China
| | - Yuhui Kou
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing, People's Republic of China
| | - Baoguo Jiang
- Department of Trauma and Orthopedics, Peking University People's Hospital, Peking University, Beijing, People's Republic of China.,Key Laboratory of Trauma and Neural Regeneration (Peking University), Ministry of Education, Beijing, People's Republic of China.,National Center for Trauma Medicine, Peking University People's Hospital, Beijing, People's Republic of China
| |
Collapse
|
2
|
Gunes M, Gecit I, Pirincci N, Kemik AS, Purisa S, Ceylan K, Aslan M. Plasma human neutrophil proteins-1, -2, and -3 levels in patients with bladder cancer. J Cancer Res Clin Oncol 2012; 139:195-9. [DOI: 10.1007/s00432-012-1305-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 09/03/2012] [Indexed: 11/29/2022]
|
3
|
Albrethsen J, Bøgebo R, Gammeltoft S, Olsen J, Winther B, Raskov H. Upregulated expression of human neutrophil peptides 1, 2 and 3 (HNP 1-3) in colon cancer serum and tumours: a biomarker study. BMC Cancer 2005; 5:8. [PMID: 15656915 PMCID: PMC548152 DOI: 10.1186/1471-2407-5-8] [Citation(s) in RCA: 117] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2004] [Accepted: 01/19/2005] [Indexed: 12/31/2022] Open
Abstract
Background Molecular markers for localized colon tumours and for prognosis following therapy are needed. Proteomics research is currently producing numerous biomarker studies with clinical potential. We investigate the protein composition of plasma and of tumour extracts with the aim of identifying biomarkers for colon cancer. Methods By Surface Enhanced Laser Desorption/Ionisation – Time Of Flight / Mass spectrometry (SELDI-TOF/MS) we compare the protein profiles of colon cancer serum with serum from healthy individuals and the protein profiles of colon tumours with normal colon tissue. By size exclusion chromatography, we investigate the binding of HNP 1-3 to high mass plasma proteins. By microflow we investigate the effect of HNP 1-3 on mammalian cells. Results Human Neutrophil Peptides -1, -2 and -3 (HNP 1-3), also known as alfa-defensin-1, -2 and -3, are present in elevated concentrations in serum from colon cancer patients and in protein extracts from colon tumours. A fraction of HNP 1-3 in serum is bound to unidentified high mass plasma proteins. HNP 1-3 purified from colon tumours are lethal to mammalian cells. Conclusions HNP 1-3 may serve as blood markers for colon cancer in combination with other diagnostic tools. We propose that HNP 1-3 are carried into the bloodstream by attaching to high mass plasma proteins in the tumour microenvironment. We discuss the effect of HNP 1-3 on tumour progression.
Collapse
Affiliation(s)
- Jakob Albrethsen
- Department of Clinical Biochemistry, Glostrup Hospital, 2600 Glostrup, Denmark
| | - Rikke Bøgebo
- Department of Clinical Biochemistry, Glostrup Hospital, 2600 Glostrup, Denmark
| | - Steen Gammeltoft
- Department of Clinical Biochemistry, Glostrup Hospital, 2600 Glostrup, Denmark
| | - Jesper Olsen
- Surgical department D, Glostrup Hospital 2600 Glostrup, Denmark
| | - Benny Winther
- Department of Clinical Biochemistry, Glostrup Hospital, 2600 Glostrup, Denmark
| | - Hans Raskov
- Colotech ltd., Copenhagen Science Park Symbion, Fruebjergvej 3, 2100 Copenhagen, Denmark
| |
Collapse
|
4
|
Abstract
Although constantly exposed to the environment and "foreign bodies" such as contact lenses and unwashed fingertips, the ocular surface succumbs to infection relatively infrequently. This is, in large part, due to a very active and robust innate immune response mounted at the ocular surface. Studies over the past 20 years have revealed that small peptides with antimicrobial activity are a major component of the human innate immune response system. The ocular surface is no exception, with peptides of the defensin and cathelicidin families being detected in the tear film and secreted by corneal and conjunctival epithelial cells. There is also much evidence to suggest that the role of some antimicrobial peptides is not restricted to direct killing of pathogens, but, rather, that they function in various aspects of the immune response, including recruitment of immune cells, and through actions on dendritic cells provide a link to adaptive immunity. A role in wound healing is also supported. In this article, the properties, mechanisms of actions and functional roles of antimicrobial peptides are reviewed, with particular emphasis on the potential multifunctional roles of defensins and LL-37 (the only known human cathelicidin) at the ocular surface.
Collapse
Affiliation(s)
- Alison M McDermott
- University of Houston, College of Optometry, Houston, Texas 77204-2020, USA.
| |
Collapse
|