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Rivera-Concha R, León M, Prado-Sanhueza A, Sánchez R, Taubert A, Hermosilla C, Uribe P, Zambrano F. Cytotoxic Oxidative Stress Effects of Neutrophil Extracellular Traps' Components on Cattle Spermatozoa. Antioxidants (Basel) 2024; 13:733. [PMID: 38929172 PMCID: PMC11200964 DOI: 10.3390/antiox13060733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/23/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Bovine spermatozoa are highly susceptible to oxidative stress (OS), and it is known to affect their cellular functions. The main leukocyte producers of reactive oxygen species (ROS) in mammalian semen are polymorphonuclear neutrophils (PMN). PMN activation can result in the formation of neutrophil extracellular traps (NETs), which have been shown to affect the motility and function of spermatozoa. However, OS effects on bull spermatozoa derived from individual NETs components have not been investigated. The hypothesis of this study was that specific NETs components might generate OS on bull spermatozoa. Bovine sperm cells were incubated with five NETs-associated molecules, including 30 μg/mL histone 2A (H2A), neutrophil elastase (NE), 1 μg/mL myeloperoxidase (MPO), cathepsin G (Cat-G), and cathelicidin LL37 (LL-37), for a time course ranging from 15 to 240 min. Fluorescence microscopy was used to evaluate the coincubation of bovine PMN and sperm cells. Within 15 min, H2A, NE, and LL-37 caused membrane disruption, while MPO and Cat-G caused OS on bull spermatozoa after 1 h of coincubation. NET formation was observed within 15 min of coincubation in co-cultures of bovine PMN/sperm cells. This study is the first to report on the role of cytotoxic OS effects caused by NETs-derived components in bovine sperm in vitro.
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Affiliation(s)
- Rodrigo Rivera-Concha
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
- Ph.D. Program in Medical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile
| | - Marion León
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
| | - Aurora Prado-Sanhueza
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
- Ph.D. Program in Morphological Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile
| | - Raúl Sánchez
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile
| | - Anja Taubert
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (A.T.); (C.H.)
| | - Carlos Hermosilla
- Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany; (A.T.); (C.H.)
| | - Pamela Uribe
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
- Department of Internal Medicine, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile
| | - Fabiola Zambrano
- Center of Excellence in Translational Medicine—Scientific and Technological Bioresource Nucleus (CEMT—BIOREN), Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile; (R.R.-C.); (M.L.); (A.P.-S.); (R.S.); (P.U.)
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco 4780000, Chile
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2
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Das S, Konwar BK. Influence of connatural factors in shaping vaginal microflora and ensuring its health. Arch Gynecol Obstet 2024; 309:871-886. [PMID: 37676318 DOI: 10.1007/s00404-023-07200-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Accepted: 08/21/2023] [Indexed: 09/08/2023]
Abstract
Vaginal canal (VC) is exposed to the external environment affected by habitual factors like hygiene and sexual behaviour as well as physiological factors like puberty, menstrual cycle, pregnancy, child birth and menopause. Healthy VC harbours beneficial microflora supported by vaginal epithelium and cervical fluid. Connatural antimicrobial peptide (AMPs) of female reproductive tract (FRT) conjunctly with these beneficial microbes provide protection from a large number of infectious diseases. Such infections may either be caused by native microbes of the VC or transitory microbes like bacteria or virus which are not a part of VC microflora. This review highlight's the role of hormones, enzymes, innate immunological factors, epithelial cells and vaginal mucus that support beneficial microbes over infectious ones thus, helping to maintain homeostasis in VC and further protect the FRT. We also discuss the prospective use of vaginal probiotics and AMPs against pathogens which can serve as a potential cure for vaginal infections.
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Affiliation(s)
- Shreaya Das
- Department of MBBT, Tezpur University, Napaam, Assam, 784028, India.
| | - Bolin K Konwar
- Department of MBBT, Tezpur University, Napaam, Assam, 784028, India
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3
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Schulze M, Jung M, Hensel B. Science-based quality control in boar semen production. Mol Reprod Dev 2023; 90:612-620. [PMID: 35355365 DOI: 10.1002/mrd.23566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/24/2022] [Accepted: 02/28/2022] [Indexed: 11/09/2022]
Abstract
The ever-increasing understanding of sperm physiology, combined with innovative technical advances, continuously furthers the development of boar semen production management. These improvements pave the way for the future implementation of modified quality assurance concepts. This review provides an overview of current trends and new approaches in boar semen production, focusing on: the improvement of hygienic standards, alternatives to the use of antibiotics including the application of cold temperature storage and the utilization of antimicrobial additives, as well as the implementation of new quality control tools. Furthermore, the influence of dilution and temperature management, as well as new possibilities for an improvement of boar semen shipping and storage conditions are reviewed.
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Affiliation(s)
- Martin Schulze
- Institute for Reproduction of Farm Animals Schönow, Bernau, Germany
| | - Markus Jung
- Institute for Reproduction of Farm Animals Schönow, Bernau, Germany
| | - Britta Hensel
- Institute for Reproduction of Farm Animals Schönow, Bernau, Germany
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4
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Lee SG, Kiattiburut W, Burke Schinkel SC, Angel J, Tanphaichitr N. Safety of multiple administrations of spermicidal LL-37 antimicrobial peptide into the mouse female reproductive tract. Mol Hum Reprod 2023; 29:gaad023. [PMID: 37326833 PMCID: PMC10323174 DOI: 10.1093/molehr/gaad023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2023] [Revised: 06/06/2023] [Indexed: 06/17/2023] Open
Abstract
We have previously demonstrated spermicidal activity of LL-37 antimicrobial peptide on mouse/human sperm and its contraceptive effects in female mice. With its microbicidal action against Neisseria gonorrhoeae, LL-37 warrants development into a multipurpose prevention technology (MPT) agent for administering into the female reproductive tract (FRT). However, it is important to verify that multiple administrations of LL-37 do not lead to damage of FRT tissues and/or irreversible loss of fecundity. Herein, we transcervically injected LL-37 (36 µM-10× spermicidal dose) into female mice in estrus in three consecutive estrous cycles. A set of mice were sacrificed for histological assessment of the vagina/cervix/uterus 24 h after the last injection, while the second set were artificially inseminated with sperm from fertile males 1 week afterwards, and then monitored for pregnancy. Mice injected with PBS in parallel were regarded as negative controls, whereas those injected with vaginal contraceptive foam (VCF, available over the counter), containing 12.5% nonoxynol-9, served as positive controls for vaginal epithelium disruption. We demonstrated that the vagina/cervix/uterus remained normal in both LL-37-injected and PBS-injected mice, which also showed 100% resumption of fecundity. In contrast, VCF-injected mice showed histological abnormalities in the vagina/cervix/uterus and only 50% of them resumed fecundity. Similarly, LL-37 multiply administered intravaginally caused no damage to FRT tissues. While our results indicate the safety of multiple treatments of LL-37 in the mouse model, similar studies have to be conducted in non-human primates and then humans. Regardless, our study provides an experimental model for studying in vivo safety of other vaginal MPT/spermicide candidates.
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Affiliation(s)
- Seung Gee Lee
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | | | | | - Jonathan Angel
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Division of Infectious Diseases, Department of Medicine, The Ottawa Hospital, Ottawa, ON, Canada
| | - Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Obstetrics/Gynecology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
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5
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Dohadwala S, Politch JA, Barmine JH, Anderson DJ. A Brief History and Advancement of Contraceptive Multipurpose Prevention Technology (cMPT) Products. Open Access J Contracept 2023; 14:83-94. [PMID: 37332341 PMCID: PMC10276588 DOI: 10.2147/oajc.s375634] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 05/27/2023] [Indexed: 06/20/2023] Open
Abstract
The high incidence of HIV and other sexually transmitted infections (STIs), and an unmet need for modern contraception resulting in a high unintended pregnancy rate, are major problems in reproductive health. The concept of multipurpose prevention technology (MPT) was introduced following the failure of several leading microbicide candidates to prevent human immunodeficiency virus type 1 (HIV-1) transmission in large clinical trials in the early 2000s. MPTs are defined as products designed to simultaneously prevent at least two of the following conditions: unintended pregnancy, HIV-1, or other major STIs. The goal of contraceptive MPT products (cMPTs) is to provide contraception and protection against one or more major STI pathogen (eg, HIV-1, herpes simplex virus (HSV) type 2, Neisseria gonorrhoeae (gonorrhea), Treponema pallidum (syphilis), Trichomonas vaginalis, Chlamydia trachomatis (Chlamydia). This new field has great potential and will benefit from lessons learned from the early microbicide trials. The cMPT field includes candidates representing various categories with different mechanisms of action including pH modifiers, polyions, microbicidal peptides, monoclonal antibodies, and other peptides that target specific reproductive and infectious processes. More preclinical research is being conducted to ensure minimal side effects and maximum efficacy in vivo. Effective proven and novel candidates are being combined to maximize efficacy, minimize side effects, and avoid drug resistance. More attention is being paid to acceptability and new delivery systems. cMPTs have a very promising future if adequate resources can be mobilized to sustain the effort from preclinical research to clinical trials to bring effective, acceptable, and affordable products to market.
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Affiliation(s)
- Sarah Dohadwala
- Department of Virology, Immunology and Microbiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Joseph A Politch
- Department of Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Jessica H Barmine
- Department of Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
| | - Deborah J Anderson
- Department of Virology, Immunology and Microbiology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
- Department of Medicine, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
- Department of Obstetrics and Gynecology, Boston University Chobanian and Avedisian School of Medicine, Boston, MA, USA
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6
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Jangir PK, Ogunlana L, Szili P, Czikkely M, Shaw LP, Stevens EJ, Yu Y, Yang Q, Wang Y, Pál C, Walsh TR, MacLean CR. The evolution of colistin resistance increases bacterial resistance to host antimicrobial peptides and virulence. eLife 2023; 12:e84395. [PMID: 37094804 PMCID: PMC10129329 DOI: 10.7554/elife.84395] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 04/05/2023] [Indexed: 04/26/2023] Open
Abstract
Antimicrobial peptides (AMPs) offer a promising solution to the antibiotic resistance crisis. However, an unresolved serious concern is that the evolution of resistance to therapeutic AMPs may generate cross-resistance to host AMPs, compromising a cornerstone of the innate immune response. We systematically tested this hypothesis using globally disseminated mobile colistin resistance (MCR) that has been selected by the use of colistin in agriculture and medicine. Here, we show that MCR provides a selective advantage to Escherichia coli in the presence of key AMPs from humans and agricultural animals by increasing AMP resistance. Moreover, MCR promotes bacterial growth in human serum and increases virulence in a Galleria mellonella infection model. Our study shows how the anthropogenic use of AMPs can drive the accidental evolution of resistance to the innate immune system of humans and animals. These findings have major implications for the design and use of therapeutic AMPs and suggest that MCR may be difficult to eradicate, even if colistin use is withdrawn.
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Affiliation(s)
- Pramod K Jangir
- Department of Biology, University of OxfordOxfordUnited Kingdom
| | - Lois Ogunlana
- Department of Biology, University of OxfordOxfordUnited Kingdom
| | - Petra Szili
- Synthetic and Systems Biology Unit, Biological Research Centre, Eötvös Loránd Research NetworkSzegedHungary
- Doctoral School of Multidisciplinary Medical Sciences, University of SzegedSzegedHungary
| | - Marton Czikkely
- Synthetic and Systems Biology Unit, Biological Research Centre, Eötvös Loránd Research NetworkSzegedHungary
| | - Liam P Shaw
- Department of Biology, University of OxfordOxfordUnited Kingdom
| | - Emily J Stevens
- Department of Biology, University of OxfordOxfordUnited Kingdom
| | - Yang Yu
- Guangdong Provincial Key Laboratory of Veterinary Pharmaceutics Development and Safety Evaluation, South China Agricultural UniversityGuangzhouChina
| | - Qiue Yang
- Fujian Provincial Key Laboratory of Soil Environmental Health and RegulaWon, College of Resources and Environment, Fujian Agriculture and Forestry UniversityFuzhouChina
| | - Yang Wang
- Beijing Advanced Innovation Centre for Food Nutrition and Human Health, College of Veterinary Medicine, China Agricultural UniversityBeijingChina
| | - Csaba Pál
- Synthetic and Systems Biology Unit, Biological Research Centre, Eötvös Loránd Research NetworkSzegedHungary
| | - Timothy R Walsh
- Department of Biology, University of OxfordOxfordUnited Kingdom
| | - Craig R MacLean
- Department of Biology, University of OxfordOxfordUnited Kingdom
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7
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Lee SG, Kiattiburut W, Khongkha T, Schinkel SCB, Lunn Y, Decker AP, Mohammadi A, Vera-Cruz A, Misra A, Angel JB, Anderson DJ, Baker M, Kaul R, Wang G, Tanphaichitr N. 17BIPHE2, an engineered cathelicidin antimicrobial peptide with low susceptibility to proteases, is an effective spermicide and microbicide against Neisseria gonorrhoeae. Hum Reprod 2022; 37:2503-2517. [PMID: 36053257 PMCID: PMC9724780 DOI: 10.1093/humrep/deac188] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 08/03/2022] [Indexed: 11/14/2022] Open
Abstract
STUDY QUESTION Is 17BIPHE2, an engineered cathelicidin antimicrobial peptide with low susceptibility to proteases, a better spermicide in cervicovaginal fluid (CVF) than its parental peptides, LL-37 and GF-17? SUMMARY ANSWER At the same mass concentration, 17BIPHE2 exhibited the highest spermicidal activity on human sperm resuspended in CVF-containing medium. WHAT IS KNOWN ALREADY LL-37 and its truncated peptide GF-17 exert both spermicidal and microbicidal activities, although they are prone to proteolytic degradation in body fluids. STUDY DESIGN, SIZE, DURATION Spermicidal activities of 17BIPHE2 were evaluated in vitro in mouse and human sperm, both resuspended in medium, and then on human sperm incubated in CVF-containing medium; in the latter condition, the spermicidal activity and peptide stability in CVF of 17BIPHE2 were compared with that of LL-37 and GF-17. The in vivo contraceptive effects of 17BIPHE2 and the reversibility thereof were then assessed in mice. Finally, in vitro microbicidal effects of 17BIPHE2 on Neisseria gonorrhoeae were determined. PARTICIPANTS/MATERIALS, SETTING, METHODS Sperm motility and plasma membrane integrity were assessed by videomicroscopy and exclusion of Sytox Green, a membrane-impermeable fluorescent dye, respectively. Successful in vitro fertilization (IVF) was determined by the presence of two pronuclei in oocytes following their coincubation with capacitated untreated or 17BIPHE2-treated sperm. Sperm alone or with 17BIPHE2 were transcervically injected into female mice and successful in vivo fertilization was indicated by the formation of two-cell embryos 42-h postinjection, and by pregnancy through pup delivery 21-25 days afterwards. Peptide intactness was assessed by immunoblotting and HPLC. Reversibility of the contraceptive effects of 17BIPHE2 was evaluated by resumption of pregnancy of the female mice, pretranscervically injected with 17BIPHE2, following natural mating with fertile males. Minimum inhibitory/bactericidal concentrations of 17BIPHE2 on N. gonorrhoeae were obtained through microdilution broth assay. MAIN RESULTS AND THE ROLE OF CHANCE At the same mass concentration, 17BIPHE2 was a more effective spermicide than LL-37 or GF-17 on human sperm resuspended in CVF-containing medium, with the spermicidal concentration of 32.4 µM. This was mainly due to lower susceptibility of 17BIPHE2 to CVF proteases. Importantly, the reproductive tract of mouse females treated three times with 32.4 µM 17BIPHE2 remained normal and their fecundity resumed after stopping 17BIPHE2 treatment. LIMITATIONS, REASONS FOR CAUTION For ethical reasons, the inhibitory effects of 17BIPHE2 on fertilization and pregnancy cannot presently be performed in women. Also, while our study has proven the effectiveness of 17BIPHE2 as a spermicide for mouse and human sperm in vitro, dosage formulation (e.g. in hydrogel) of 17BIPHE2 still needs to be developed to allow 17BIPHE2 to remain in the vagina/uterine cavity with controlled release for its spermicidal action. WIDER IMPLICATIONS OF THE FINDINGS Since 17BIPHE2 also exerted bactericidal activity against N. gonorrhoeae at its spermicidal concentration, it is a promising candidate to be developed into a vaginal multipurpose prevention technology agent, thus empowering women against unplanned pregnancies and sexually transmitted infections. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by the Canadian Institutes of Health Research (PJT 173268 to N.T.). There are no competing interests to declare. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- Seung Gee Lee
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | | | - Thitiporn Khongkha
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | | | - Yvonne Lunn
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Aaron P Decker
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Avid Mohammadi
- Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Ana Vera-Cruz
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Avika Misra
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
| | - Jonathan B Angel
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON, Canada
- Division of Infectious Diseases, Department of Medicine, The Ottawa Hospital, Ottawa, ON, Canada
| | - Deborah J Anderson
- Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Mark Baker
- Department of Biological Science, University of Newcastle, Callaghan, NSW, Australia
| | - Rupert Kaul
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
- Department of Immunology, University of Toronto, Toronto, ON, Canada
| | - Guangshun Wang
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada
- Department of Obstetrics/Gynecology, University of Ottawa, Ottawa, ON, Canada
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8
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Claure I, Anderson D, Klapperich CM, Kuohung W, Wong JY. Biomaterials and Contraception: Promises and Pitfalls. Ann Biomed Eng 2020; 48:2113-2131. [PMID: 31701311 PMCID: PMC7202983 DOI: 10.1007/s10439-019-02402-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2019] [Accepted: 10/31/2019] [Indexed: 02/06/2023]
Abstract
The present state of reproductive and sexual health around the world reveals disparities in contraceptive use and effectiveness. Unintended pregnancy and sexually transmitted infection transmission rates remain high even with current prevention methods. The 20th century saw a contraceptive revolution with biomedical innovation driving the success of new contraceptive technologies with central design concepts and materials. Current modalities can be broadly categorized according to their mode of function: reversible methods such as physical/chemical barriers or hormonal delivery devices via systemic (transdermal and subcutaneous) or localized (intrauterine and intravaginal) administration, and nonreversible sterilization procedures such as tubal ligation and vasectomy. Contraceptive biomaterials are at present dominated by well-characterized elastomers such as polydimethylsiloxane and ethylene vinyl acetate due to their favorable material properties and versatility. Contraceptives alter the normal function of cellular components in the reproductive systems to impair fertility. The purpose of this review is to highlight the bioengineering design of existing methods, explore novel adaptations, and address notable shortcomings in current contraceptive technologies.
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Affiliation(s)
- Isabella Claure
- Departments of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
| | - Deborah Anderson
- Obstetrics and Gynecology, Boston University, Boston, MA, 02215, USA
- Medicine, Boston University, Boston, MA, 02215, USA
| | - Catherine M Klapperich
- Departments of Biomedical Engineering, Boston University, Boston, MA, 02215, USA
- Mechanical Engineering, Boston University, Boston, MA, 02215, USA
- Division of Materials Science and Engineering, Boston University, Boston, MA, 02215, USA
| | - Wendy Kuohung
- Obstetrics and Gynecology, Boston University, Boston, MA, 02215, USA
| | - Joyce Y Wong
- Departments of Biomedical Engineering, Boston University, Boston, MA, 02215, USA.
- Division of Materials Science and Engineering, Boston University, Boston, MA, 02215, USA.
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9
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Barton BE, Rock JK, Willie AM, Harris EA, Finnerty RM, Herrera GG, Anamthathmakula P, Winuthayanon W. Serine protease inhibitor disrupts sperm motility leading to reduced fertility in female mice†. Biol Reprod 2020; 103:400-410. [PMID: 32303757 PMCID: PMC7401027 DOI: 10.1093/biolre/ioaa049] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 04/03/2020] [Accepted: 04/10/2020] [Indexed: 11/26/2022] Open
Abstract
Inhibition of the sperm transport process in the female reproductive tract could lead to infertility. We previously showed that a pan-serine protease inhibitor, 4-(2-aminoethyl)benzenesulfonyl fluoride (AEBSF), blocked semen liquefaction in vivo and resulted in a drastic decrease in the number of sperm in the oviduct of female mice. In this study, we used a mouse model to test the efficacy of AEBSF as a reversible contraceptive, a sperm motility inhibitor, and a spermicide. Additionally, this study evaluated the toxicity of AEBSF on mouse vaginal tissues in vivo and human endocervical cells in vitro. We found that female mice treated with AEBSF had significantly less pups born per litter as well as fertilization rates in vivo compared to the vehicle control. We then showed that AEBSF reduced sperm motility and fertilization capability in vitro in a dose-dependent manner. Furthermore, AEBSF also exhibited spermicidal effects. Lastly, AEBSF treatment in female mice for 10 min or 3 consecutive days did not alter vaginal cell viability in vivo, similar to that of the vehicle and non-treated controls. However, AEBSF decreased cell viability of human ectocervical (ECT) cell line in vitro, suggesting that cells in the lower reproductive tract in mice and humans responded differently to AEBSF. In summary, our study showed that AEBSF can be used as a prototype compound for the further development of novel non-hormonal contraceptives for women by targeting sperm transport in the female reproductive tract.
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Affiliation(s)
- Brooke E Barton
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Jenna K Rock
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Anna M Willie
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Emily A Harris
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Ryan M Finnerty
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Gerardo G Herrera
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Prashanth Anamthathmakula
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
| | - Wipawee Winuthayanon
- School of Molecular Biosciences, Center for Reproductive Biology, College of Veterinary Medicine, Washington State University, Pullman, Washington, USA
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10
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Madanchi H, Shoushtari M, Kashani H, Sardari S. Antimicrobial peptides of the vaginal innate immunity and their role in the fight against sexually transmitted diseases. New Microbes New Infect 2020; 34:100627. [PMID: 31993204 PMCID: PMC6976936 DOI: 10.1016/j.nmni.2019.100627] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/21/2019] [Accepted: 11/07/2019] [Indexed: 12/18/2022] Open
Abstract
Some antimicrobial peptides (AMPs) are produced in the vaginal innate immune system and play an important role in protecting this organ against pathogenic agents. Moreover, sexually transmitted diseases have become a major problem in human societies and are rapidly spreading. The emergence of antibiotic-resistant microbes (superbugs) can pose a major threat to human societies and cause rapid spread of these diseases. Finding new antimicrobial compounds to fight superbugs is therefore essential. It has been shown that AMPs have good potential to become new antibiotics. The most important AMPs in the vaginal innate immune system are defensins, secretory leucocyte protease inhibitors, calprotectin, lysozyme, lactoferrin and elafin, which play an important role in host defence against sexually transmitted infections, modulation of immune responses and anticancer activities. Some AMPs, such as LL-37, magainin 2 and nisin, show both spermicidal and antimicrobial effects in the vagina. In this summary, we will discuss vaginal AMPs and continue to address some of the challenges of using peptides to control pathogens that are effective in sexually transmitted diseases.
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Affiliation(s)
- H. Madanchi
- Department of Biotechnology, School of Medicine, Semnan University of Medical Sciences, Semnan, Iran
- Drug Design and Bioinformatics Unit, Department of Biotechnology Research Centre, Pasteur Institute of Iran, Tehran, Iran
| | - M. Shoushtari
- Department of Virology, Pasteur Institute of Iran, Tehran, Iran
| | - H.H. Kashani
- Gametogenesis Research Centre, Kashan University of Medical Sciences, Kashan, Iran
- Anatomical Sciences Research Centre, Basic Sciences Research Institute, Kashan University of Medical Sciences, Kashan, Iran
| | - S. Sardari
- Drug Design and Bioinformatics Unit, Department of Biotechnology Research Centre, Pasteur Institute of Iran, Tehran, Iran
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11
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Kiattiburut W, Zhi R, Lee SG, Foo AC, Hickling DR, Keillor JW, Goto NK, Li W, Conlan W, Angel JB, Wang G, Tanphaichitr N. Antimicrobial peptide LL-37 and its truncated forms, GI-20 and GF-17, exert spermicidal effects and microbicidal activity against Neisseria gonorrhoeae. Hum Reprod 2018; 33:2175-2183. [PMID: 30357408 PMCID: PMC6238367 DOI: 10.1093/humrep/dey315] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Revised: 08/23/2018] [Accepted: 10/04/2018] [Indexed: 12/30/2022] Open
Abstract
STUDY QUESTION Do the truncated LL-37 peptides, GI-20 and GF-17, have spermicidal activity and microbicidal effects on the sexually transmitted infection (STI) pathogen Neisseria gonorrhoeae with equivalent potency to LL-37? SUMMARY ANSWER GI-20 and GF-17 exhibited spermicidal effects on both mouse and human sperm as well as microbicidal action on N. gonorrhoeae with the same efficacy as LL-37. WHAT IS KNOWN ALREADY The antimicrobial peptide LL-37 exerts microbicidal activity against various STI pathogens as well as spermicidal effects on both mouse and human sperm. STUDY DESIGN, SIZE, DURATION Spermicidal activities of GI-20 and GF-17 were evaluated in vitro in mouse and human sperm and in vivo in mice. Finally, in vitro antimicrobial effects of LL-37, GI-20 and GF-17 on an STI pathogen, N. gonorrhoeae were determined. All experiments were repeated three times or more. In particular, sperm samples from different males were used on each experimental day. PARTICIPANTS/MATERIALS, SETTING, METHODS The plasma membrane integrity of peptide-treated sperm was assessed by cellular exclusion of Sytox Green, a membrane impermeable fluorescent DNA dye. Successful mouse in vitro fertilization was revealed by the presence of two pronuclei in oocytes following co-incubation with capacitated untreated/peptide-pretreated sperm. Sperm plus each peptide were transcervically injected into female mice and the success of in vivo fertilization was scored by the formation of 2-4 cell embryos 42 h afterward. Reproductive tract tissues of peptide pre-exposed females were then assessed histologically for any damage. Minimal inhibitory/bactericidal concentrations of LL-37, GI-20 and GF-17 on N. gonorrhoeae were determined by a standard method. MAIN RESULTS AND THE ROLE OF CHANCE Like LL-37, treatment of sperm with GI-20 and GF-17 resulted in dose-dependent increases in sperm plasma membrane permeabilization, reaching the maximum at 18 and 3.6 μM for human and mouse sperm, respectively (P < 0.0001, as compared with untreated sperm). Mouse sperm treated with 3.6 μM GI-20 or GF-17 did not fertilize oocytes either in vitro or in vivo. Moreover, reproductive tract tissues of female mice pre-exposed to 3.6 μM GI-20 or GF-17 remained intact with no lesions, erosions or ulcerations. At 1.8-7.2 μM, LL-37, GI-20 and GF-17 exerted bactericidal effects on N. gonorrhoeae. LARGE SCALE DATA N/A. LIMITATIONS, REASONS FOR CAUTION Direct demonstration of the inhibitory effects of GI-20 and GF-17 on human in vitro and in vivo fertilization cannot be performed due to ethical issues. WIDER IMPLICATIONS OF THE FINDINGS Like LL-37, GI-20 and GF-17 acted as spermicides and microbicides against N. gonorrhoeae, without adverse effects on female reproductive tissues. With lower synthesis costs, GI-20 and GF-17 are attractive peptides for further development into vaginal spermicides/microbicides. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by Canadian Institutes of Health Research (MOP119438 and CCI82413 to N.T.) and NIH (R01 AI105147 to G.W.). There are no competing interests to declare.
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Affiliation(s)
| | - Ruina Zhi
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Seung Gee Lee
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Alexander C Foo
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, Ontario, Canada
| | - Duane R Hickling
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Surgery, Division of Urology, The Ottawa Hospital, Ottawa, Ontario, Canada
| | - Jeffrey W Keillor
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, Ontario, Canada
| | - Natalie K Goto
- Department of Chemistry and Biomolecular Sciences, Faculty of Science, University of Ottawa, Ottawa, Ontario, Canada
| | - Weihua Li
- Shanghai Institute of Planned Parenthood Research, and School of Public Health, Fudan University, Shanghai, Republic of China
| | - Wayne Conlan
- Human Health Therapeutics Department, National Research Council Canada, Ottawa, Ontario, Canada
| | - Jonathan B Angel
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Medicine, Division in Infectious Diseases, The Ottawa Hospital, Ottawa, Ontario, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Guangshun Wang
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, Omaha, NE, USA
| | - Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Department of Obstetrics & Gynecology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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12
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Tanphaichitr N, Kongmanas K, Faull KF, Whitelegge J, Compostella F, Goto-Inoue N, Linton JJ, Doyle B, Oko R, Xu H, Panza L, Saewu A. Properties, metabolism and roles of sulfogalactosylglycerolipid in male reproduction. Prog Lipid Res 2018; 72:18-41. [PMID: 30149090 PMCID: PMC6239905 DOI: 10.1016/j.plipres.2018.08.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Revised: 08/20/2018] [Accepted: 08/21/2018] [Indexed: 12/16/2022]
Abstract
Sulfogalactosylglycerolipid (SGG, aka seminolipid) is selectively synthesized in high amounts in mammalian testicular germ cells (TGCs). SGG is an ordered lipid and directly involved in cell adhesion. SGG is indispensable for spermatogenesis, a process that greatly depends on interaction between Sertoli cells and TGCs. Spermatogenesis is disrupted in mice null for Cgt and Cst, encoding two enzymes essential for SGG biosynthesis. Sperm surface SGG also plays roles in fertilization. All of these results indicate the significance of SGG in male reproduction. SGG homeostasis is also important in male fertility. Approximately 50% of TGCs become apoptotic and phagocytosed by Sertoli cells. SGG in apoptotic remnants needs to be degraded by Sertoli lysosomal enzymes to the lipid backbone. Failure in this event leads to a lysosomal storage disorder and sub-functionality of Sertoli cells, including their support for TGC development, and consequently subfertility. Significantly, both biosynthesis and degradation pathways of the galactosylsulfate head group of SGG are the same as those of sulfogalactosylceramide (SGC), a structurally related sulfoglycolipid important for brain functions. If subfertility in males with gene mutations in SGG/SGC metabolism pathways manifests prior to neurological disorder, sperm SGG levels might be used as a reporting/predicting index of the neurological status.
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Affiliation(s)
- Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Obstetrics/Gynecology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada.
| | - Kessiri Kongmanas
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada; Division of Dengue Hemorrhagic Fever Research, Department of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Kym F Faull
- Pasarow Mass Spectrometry Laboratory, University of California, Los Angeles, California, USA
| | - Julian Whitelegge
- Pasarow Mass Spectrometry Laboratory, University of California, Los Angeles, California, USA
| | - Federica Compostella
- Dipartimento di Biotecnologie Mediche e Medicina Traslazionale, Università degli Studi di Milano, Via Saldini 50, 20133 Milano, Italy
| | - Naoko Goto-Inoue
- Department of Marine Science and Resources, College of Bioresource Sciences, Nihon University, Kanagawa 252-0880, Japan
| | - James-Jules Linton
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Brendon Doyle
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Richard Oko
- Department of Biomedical and Molecular Sciences, Queen's University, Kingston, Ontario, Canada
| | - Hongbin Xu
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada; Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Luigi Panza
- Department of Pharmaceutical Sciences, Università del Piemonte Orientale, Largo Donegani 2, 28100 Novara, Italy
| | - Arpornrad Saewu
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
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13
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Cieślik-Bielecka A, Reichert P, Skowroński R, Królikowska A, Bielecki T. A new aspect of in vitro antimicrobial leukocyte- and platelet-rich plasma activity based on flow cytometry assessment. Platelets 2018; 30:728-736. [PMID: 30252585 DOI: 10.1080/09537104.2018.1513472] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The current literature suggests that the antibacterial effect of leukocyte- and platelet-rich plasma (L-PRP) is directly related to platelet and leukocyte concentrations. The aim of this study was twofold: first, to evaluate the antimicrobial effect of L-PRP against selected bacterial strains in vitro, and second, to correlate this effect with leukocyte and platelet content in the final concentration. Blood was collected from 20 healthy males, and L-PRP, acellular plasma (AP), and autologous thrombin were consecutively prepared. Flow cytometry analysis of the blood, L-PRP, and AP was performed. The L-PRP gel, liquid L-PRP, and thrombin samples were tested in vitro for their antibacterial properties against seven selected bacterial strains using the Kirby-Bauer disk-diffusion method. There was notable antimicrobial activity against selected bacterial strains. No statistically significant correlations between antimicrobial activities and the platelet concentration in L-PRP were observed. Statistically significant positive correlations between selected leukocyte subtypes and antimicrobial activity were noted. A negative correlation was found between elevated monocyte count and antimicrobial activity of L-PRP against one bacterial strain studied. L-PRP possesses antimicrobial activity and can be potentially useful in the fight against certain postoperative infections. The bactericidal effect of L-PRP is caused by leukocytes, and there exists a relationship among selected leukocyte subtypes and L-PRP antimicrobial activity.
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Affiliation(s)
| | - Paweł Reichert
- b Division of Sports Medicine, Department of Physiotherapy, Faculty of Health Sciences , Wroclaw Medical University , Wroclaw , Poland
| | - Rafał Skowroński
- c Department of Orthopaedics , Medical University of Białystok , Białystok , Poland
| | - Aleksandra Królikowska
- d Department of Physiotherapy , The College of Physiotherapy in Wroclaw , Wroclaw , Poland
| | - Tomasz Bielecki
- e Department of Orthopaedics , Medical University of Silesia, Trauma Center , Sosnowiec , Poland
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14
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Compostella F, Pitirollo O, Silvestri A, Polito L. Glyco-gold nanoparticles: synthesis and applications. Beilstein J Org Chem 2017; 13:1008-1021. [PMID: 28684980 PMCID: PMC5480336 DOI: 10.3762/bjoc.13.100] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 05/05/2017] [Indexed: 01/15/2023] Open
Abstract
Glyco-gold nanoparticles combine in a single entity the peculiar properties of gold nanoparticles with the biological activity of carbohydrates. The result is an exciting nanosystem, able to mimic the natural multivalent presentation of saccharide moieties and to exploit the peculiar optical properties of the metallic core. In this review, we present recent advances on glyco-gold nanoparticle applications in different biological fields, highlighting the key parameters which inspire the glyco nanoparticle design.
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Affiliation(s)
- Federica Compostella
- Department of Medical Biotechnology and Translational Medicine, University of Milan, Via Saldini 50, 20133 Milan, Italy
| | - Olimpia Pitirollo
- Department of Chemistry, University of Milan, Via C. Golgi 19, 20133 Milan, Italy
| | - Alessandro Silvestri
- Department of Chemistry, University of Milan, Via C. Golgi 19, 20133 Milan, Italy
- CNR – ISTM, Nanotechnology Lab., Via G. Fantoli 16/15, 20138 Milan, Italy
| | - Laura Polito
- CNR – ISTM, Nanotechnology Lab., Via G. Fantoli 16/15, 20138 Milan, Italy
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15
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Paladino A, Marchetti F, Rinaldi S, Colombo G. Protein design: from computer models to artificial intelligence. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2017. [DOI: 10.1002/wcms.1318] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Antonella Paladino
- Biomolecular Simulations & Computational Chemistry Group; Istituto Istituto di Chimica del Riconoscimento Molecolare, CNR; Milano Italy
| | - Filippo Marchetti
- Biomolecular Simulations & Computational Chemistry Group; Istituto Istituto di Chimica del Riconoscimento Molecolare, CNR; Milano Italy
| | - Silvia Rinaldi
- Biomolecular Simulations & Computational Chemistry Group; Istituto Istituto di Chimica del Riconoscimento Molecolare, CNR; Milano Italy
| | - Giorgio Colombo
- Biomolecular Simulations & Computational Chemistry Group; Istituto Istituto di Chimica del Riconoscimento Molecolare, CNR; Milano Italy
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16
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Rajesh A, Yenugu S. shRNA mediated ablation of prostate and testis expressed (Pate
) messenger RNA results in impaired sperm function and fertility. Andrology 2017; 5:541-547. [DOI: 10.1111/andr.12321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 10/26/2016] [Accepted: 11/30/2016] [Indexed: 12/17/2022]
Affiliation(s)
- A. Rajesh
- Department of Animal Biology; University of Hyderabad; Gachibowli Hyderabad India
| | - S. Yenugu
- Department of Animal Biology; University of Hyderabad; Gachibowli Hyderabad India
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17
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Koro C, Hellvard A, Delaleu N, Binder V, Scavenius C, Bergum B, Główczyk I, Roberts HM, Chapple ILC, Grant MM, Rapala-Kozik M, Klaga K, Enghild JJ, Potempa J, Mydel P. Carbamylated LL-37 as a modulator of the immune response. Innate Immun 2016; 22:218-29. [PMID: 26878866 PMCID: PMC5143673 DOI: 10.1177/1753425916631404] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 01/13/2016] [Indexed: 12/21/2022] Open
Abstract
Carbamylation of lysine residues and protein N-termini is an ubiquitous, non-enzymatic post-translational modification. Carbamylation at sites of inflammation is due to cyanate formation during the neutrophil oxidative burst and may target lysine residues within the antimicrobial peptide LL-37. The bactericidal and immunomodulatory properties of LL-37 depend on its secondary structure and cationic nature, which are conferred by arginine and lysine residues. Therefore, carbamylation may affect the biological functions of LL-37. The present study examined the kinetics and pattern of LL-37 carbamylation to investigate how this modification affects the bactericidal, cytotoxic and immunomodulatory function of the peptide. The results indicated that LL-37 undergoes rapid modification in the presence of physiological concentrations of cyanate, yielding a spectrum of diverse carbamylated peptides. Mass spectrometry analyses revealed that theN-terminal amino group of Leu-1 was highly reactive and was modified almost instantly by cyanate to generate the predominant form of the modified peptide, named LL-37(C1) This was followed by the sequential carbamylation of Lys-8, Lys-12, and Lys-15 to yield LL-37(C8), and Lys-15 to yield LL-37(C12,15) Carbamylation had profound and diverse effects on the structure and biological properties of LL-37. In some cases, anti-inflammatory LL-37 was rapidly converted to pro-inflammatory LL-37.
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Affiliation(s)
- Catalin Koro
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Annelie Hellvard
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Nicolas Delaleu
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Veronika Binder
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Carsten Scavenius
- Interdisciplinary Nanoscience Center at the Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Brith Bergum
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Izabela Główczyk
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Helen M Roberts
- Periodontal Research Group MRC Centre for Immune Regulation, University of Birmingham, Birmingham, UK
| | - Iain L C Chapple
- Periodontal Research Group MRC Centre for Immune Regulation, University of Birmingham, Birmingham, UK
| | - Melissa M Grant
- Periodontal Research Group MRC Centre for Immune Regulation, University of Birmingham, Birmingham, UK
| | - Maria Rapala-Kozik
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Kinga Klaga
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jan J Enghild
- Interdisciplinary Nanoscience Center at the Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark
| | - Jan Potempa
- Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, Louisville, KY, USA
| | - Piotr Mydel
- Broegelmann Research Laboratory, Department of Clinical Science, University of Bergen, Bergen, Norway Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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18
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Tanphaichitr N, Srakaew N, Alonzi R, Kiattiburut W, Kongmanas K, Zhi R, Li W, Baker M, Wang G, Hickling D. Potential Use of Antimicrobial Peptides as Vaginal Spermicides/Microbicides. Pharmaceuticals (Basel) 2016; 9:E13. [PMID: 26978373 PMCID: PMC4812377 DOI: 10.3390/ph9010013] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/01/2016] [Accepted: 03/03/2016] [Indexed: 12/11/2022] Open
Abstract
The concurrent increases in global population and sexually transmitted infection (STI) demand a search for agents with dual spermicidal and microbicidal properties for topical vaginal application. Previous attempts to develop the surfactant spermicide, nonoxynol-9 (N-9), into a vaginal microbicide were unsuccessful largely due to its inefficiency to kill microbes. Furthermore, N-9 causes damage to the vaginal epithelium, thus accelerating microbes to enter the women's body. For this reason, antimicrobial peptides (AMPs), naturally secreted by all forms of life as part of innate immunity, deserve evaluation for their potential spermicidal effects. To date, twelve spermicidal AMPs have been described including LL-37, magainin 2 and nisin A. Human cathelicidin LL-37 is the most promising spermicidal AMP to be further developed for vaginal use for the following reasons. First, it is a human AMP naturally produced in the vagina after intercourse. Second, LL-37 exerts microbicidal effects to numerous microbes including those that cause STI. Third, its cytotoxicity is selective to sperm and not to the female reproductive tract. Furthermore, the spermicidal effects of LL-37 have been demonstrated in vivo in mice. Therefore, the availability of LL-37 as a vaginal spermicide/microbicide will empower women for self-protection against unwanted pregnancies and STI.
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Affiliation(s)
- Nongnuj Tanphaichitr
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8L6, ON, Canada.
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, ON, Canada.
| | - Nopparat Srakaew
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Department of Zoology, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand.
| | - Rhea Alonzi
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Department of Biochemistry, Microbiology, Immunology, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1H 8M5, ON, Canada.
| | - Wongsakorn Kiattiburut
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
| | - Kessiri Kongmanas
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Division of Dengue Hemorrhagic Fever Research Unit, Office of Research and Development, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
| | - Ruina Zhi
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Key Laboratory of Reproduction Regulation of NPFPC, Shanghai Institute of Planned Parenthood Research, and School of Public Health, Fudan University, Shanghai 200032, China.
| | - Weihua Li
- Key Laboratory of Reproduction Regulation of NPFPC, Shanghai Institute of Planned Parenthood Research, and School of Public Health, Fudan University, Shanghai 200032, China.
| | - Mark Baker
- Reproductive Proteomics, Department of Science and Information technology, University of Newcastle, Callaghan Drive, Newcastle, NSW 2308 Australia.
| | - Guanshun Wang
- Department of Pathology and Microbiology, College of Medicine, University of Nebraska Medical Center, 986495 Nebraska Medical Center, Omaha, NE 68198-6495, USA.
| | - Duane Hickling
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario K1H 8L6, ON, Canada.
- Division of Urology, Department of Surgery, Faculty of Medicine, University of Ottawa, Ottawa, Ontario K1Y 4E9, ON, Canada.
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19
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Pound LD, Patrick C, Eberhard CE, Mottawea W, Wang GS, Abujamel T, Vandenbeek R, Stintzi A, Scott FW. Cathelicidin Antimicrobial Peptide: A Novel Regulator of Islet Function, Islet Regeneration, and Selected Gut Bacteria. Diabetes 2015; 64:4135-47. [PMID: 26370175 DOI: 10.2337/db15-0788] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Accepted: 08/22/2015] [Indexed: 11/13/2022]
Abstract
Cathelicidin antimicrobial peptide (CAMP) is a naturally occurring secreted peptide that is expressed in several organs with pleiotropic roles in immunomodulation, wound healing, and cell growth. We previously demonstrated that gut Camp expression is upregulated when type 1 diabetes-prone rats are protected from diabetes development. Unexpectedly, we have also identified novel CAMP expression in the pancreatic β-cells of rats, mice, and humans. CAMP was present even in sterile rat embryo islets, germ-free adult rat islets, and neogenic tubular complexes. Camp gene expression was downregulated in young BBdp rat islets before the onset of insulitis compared with control BBc rats. CAMP treatment of dispersed islets resulted in a significant increase in intracellular calcium mobilization, an effect that was both delayed and blunted in the absence of extracellular calcium. Additionally, CAMP treatment promoted insulin and glucagon secretion from isolated rat islets. Thus, CAMP is a promoter of islet paracrine signaling that enhances islet function and glucoregulation. Finally, daily treatment with the CAMP/LL-37 peptide in vivo in BBdp rats resulted in enhanced β-cell neogenesis and upregulation of potentially beneficial gut microbes. In particular, CAMP/LL-37 treatment shifted the abundance of specific bacterial populations, mitigating the gut dysbiosis observed in the BBdp rat. Taken together, these findings indicate a novel functional role for CAMP/LL-37 in islet biology and modification of gut microbiota.
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Affiliation(s)
- Lynley D Pound
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Christopher Patrick
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Chandra E Eberhard
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Walid Mottawea
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Mansoura, Egypt
| | - Gen-Sheng Wang
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Turki Abujamel
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Roxanne Vandenbeek
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Alain Stintzi
- Ottawa Institute of Systems Biology, Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada
| | - Fraser W Scott
- Chronic Disease Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada Department of Biochemistry, Microbiology and Immunology, University of Ottawa, Ottawa, Ontario, Canada Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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20
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Scarsini M, Tomasinsig L, Arzese A, D'Este F, Oro D, Skerlavaj B. Antifungal activity of cathelicidin peptides against planktonic and biofilm cultures of Candida species isolated from vaginal infections. Peptides 2015; 71:211-21. [PMID: 26238597 DOI: 10.1016/j.peptides.2015.07.023] [Citation(s) in RCA: 37] [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] [Received: 04/14/2015] [Revised: 07/23/2015] [Accepted: 07/24/2015] [Indexed: 01/13/2023]
Abstract
Vulvovaginal candidiasis (VVC) is a frequent gynecological condition caused by Candida albicans and a few non-albicans Candida spp. It has a significant impact on the quality of life of the affected women also due to a considerable incidence of recurrent infections that are difficult to treat. The formation of fungal biofilm may contribute to the problematic management of recurrent VVC due to the intrinsic resistance of sessile cells to the currently available antifungals. Thus, alternative approaches for the prevention and control of biofilm-related infections are urgently needed. In this regard, the cationic antimicrobial peptides (AMPs) of the innate immunity are potential candidates for the development of novel antimicrobials as many of them display activity against biofilm formed by various microbial species. In the present study, we investigated the in vitro antifungal activities of the cathelicidin peptides LL-37 and BMAP-28 against pathogenic Candida spp. also including C. albicans, isolated from vaginal infections, and against C. albicans SC5314 as a reference strain. The antimicrobial activity was evaluated against planktonic and biofilm-grown Candida cells by using microdilution susceptibility and XTT [2,3-bis(2-methoxy-4-nitro-5-sulfo-phenyl)-2H-tetrazolium-5-carboxanilide] reduction assays and, in the case of established biofilms, also by CFU enumeration and fluorescence microscopy. BMAP-28 was effective against planktonically grown yeasts in standard medium (MIC range, 2-32μM), and against isolates of C. albicans and Candida krusei in synthetic vaginal simulated fluid (MIC range 8-32μM, depending on the pH of the medium). Established 48-h old biofilms formed by C. albicans SC5314 and C. albicans and C. krusei isolates were 70-90% inhibited within 24h incubation with 16μM BMAP-28. As shown by propidium dye uptake and CFU enumeration, BMAP-28 at 32μM killed sessile C. albicans SC5314 by membrane permeabilization with a faster killing kinetics compared to 32μM miconazole (80-85% reduced biofilm viability in 90min vs 48h). In addition, BMAP-28 at 16μM prevented Candida biofilm formation on polystyrene and medical grade silicone surfaces by causing a >90% reduction in the viability of planktonic cells in 30min. LL-37 was overall less effective than BMAP-28 against planktonic Candida spp. (MIC range 4-≥64μM), and was ineffective against established Candida biofilms. However, LL-37 at 64μM prevented Candida biofilm development by inhibiting cell adhesion to polystyrene and silicone surfaces. Finally, Candida adhesion was strongly inhibited when silicone was pre-coated with a layer of BMAP-28 or LL-37, encouraging further studies for the development of peptide-based antimicrobial coatings.
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Affiliation(s)
- Michele Scarsini
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Linda Tomasinsig
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Alessandra Arzese
- Department of Experimental and Clinical Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Francesca D'Este
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Debora Oro
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy
| | - Barbara Skerlavaj
- Department of Medical and Biological Sciences, University of Udine, Piazzale Kolbe 4, 33100 Udine, Italy.
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21
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Schulze M, Dathe M, Waberski D, Müller K. Liquid storage of boar semen: Current and future perspectives on the use of cationic antimicrobial peptides to replace antibiotics in semen extenders. Theriogenology 2015; 85:39-46. [PMID: 26264695 DOI: 10.1016/j.theriogenology.2015.07.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Revised: 06/29/2015] [Accepted: 07/06/2015] [Indexed: 12/27/2022]
Abstract
Antibiotics are of great importance in boar semen extenders to ensure long shelf life of spermatozoa and to reduce transmission of pathogens into the female tract. However, the use of antibiotics carries a risk of developing resistant bacterial strains in artificial insemination laboratories and their spread via artificial insemination. Development of multiresistant bacteria is a major concern if mixtures of antibiotics are used in semen extenders. Minimal contamination prevention techniques and surveillance of critical hygiene control points proved to be efficient in reducing bacterial load and preventing development of antibiotic resistance. Nevertheless, novel antimicrobial concepts are necessary for efficient bacterial control in extended boar semen with a minimum risk of evoking antibiotic resistance. Enhanced efforts have been made in recent years in the design and use of antimicrobial peptides (AMPs) as alternatives to conventional antibiotics. The male genital tract harbors a series of endogenic substances with antimicrobial activity and additional functions relevant to the fertilization process. However, exogenic AMPs often exert dose- and time-dependent toxic effects on mammalian spermatozoa. Therefore, it is important that potential newly designed AMPs have only minor impacts on eukaryotic cells. Recently, synthetic magainin derivatives and cyclic hexapeptides were tested for their application in boar semen preservation. Bacterial selectivity, proteolytic stability, thermodynamic resistance, and potential synergistic interaction with conventional antibiotics propel predominantly cyclic hexapeptides into highly promising, leading candidates for further development in semen preservation. The time scale for the development of resistant pathogens cannot be predicted at this moment.
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Affiliation(s)
- M Schulze
- Institute for Reproduction of Farm Animals Schönow Inc., Bernau, Germany.
| | - M Dathe
- Leibniz Institute for Molecular Pharmacology, Berlin, Germany
| | - D Waberski
- Unit for Reproductive Medicine of Clinics, Clinic for Pigs and Small Ruminants, University of Veterinary Medicine Hannover, Hannover, Germany
| | - K Müller
- Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
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22
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Schulze M, Grobbel M, Müller K, Junkes C, Dathe M, Rüdiger K, Jung M. Challenges and Limits Using Antimicrobial Peptides in Boar Semen Preservation. Reprod Domest Anim 2015; 50 Suppl 2:5-10. [DOI: 10.1111/rda.12553] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 05/10/2015] [Indexed: 01/17/2023]
Affiliation(s)
- M Schulze
- Institute for the Reproduction of Farm Animals Schönow Inc.; Bernau Germany
| | - M Grobbel
- Leibniz Institute for Zoo and Wildlife Research; Berlin Germany
- Federal Institute for Risk Assessment; Berlin Germany
| | - K Müller
- Leibniz Institute for Zoo and Wildlife Research; Berlin Germany
| | - C Junkes
- Leibniz Institute of Molecular Pharmacology; Berlin Germany
| | - M Dathe
- Leibniz Institute of Molecular Pharmacology; Berlin Germany
| | - K Rüdiger
- Institute for the Reproduction of Farm Animals Schönow Inc.; Bernau Germany
| | - M Jung
- Institute for the Reproduction of Farm Animals Schönow Inc.; Bernau Germany
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