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Tong X, Dong Y, Han Y, Zhou R, Zhu L, Zhang D, Dai Y, Shen X, Li Y, Wen C, Lin J. A biodegradable Zn-5Gd alloy with biomechanical compatibility, cytocompatibility, antibacterial ability, and in vitro and in vivo osteogenesis for orthopedic applications. Acta Biomater 2024; 177:538-559. [PMID: 38253302 DOI: 10.1016/j.actbio.2024.01.018] [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: 10/11/2023] [Revised: 12/21/2023] [Accepted: 01/15/2024] [Indexed: 01/24/2024]
Abstract
Zinc (Zn) and some of its alloys are recognized as promising biodegradable implant materials due to their acceptable biocompatibility, facile processability, and moderate degradation rate. Nevertheless, the limited mechanical properties and stability of as-cast Zn alloys hinder their clinical application. In this work, hot-rolled (HR) and hot-extruded (HE) Zn-5 wt.% gadolinium (Zn-5Gd) samples were prepared by casting and respectively combining with hot rolling and hot extrusion for bone-implant applications. Their microstructure evolution, mechanical properties, corrosion behavior, cytotoxicity, antibacterial ability, and in vitro and in vivo osteogenesis were systematically evaluated. The HR and HE Zn-5Gd exhibited significantly improved mechanical properties compared with those of their pure Zn counterparts and the HR Zn-5Gd showed a unique combination of tensile properties with an ultimate tensile strength of ∼311.6 MPa, yield strength of ∼236.5 MPa, and elongation of ∼40.6%, all of which are greater than the mechanical properties required for bone-implant materials. The HR and HE Zn-5Gd showed higher corrosion resistance than their pure Zn counterpart in Hanks' solution and the HE Zn-5Gd had the lowest corrosion rate of 155 µm/y measured by electrochemical corrosion and degradation rate of 26.9 µm/y measured by immersion testing. The HR and HE Zn-5Gd showed high cytocompatibility toward MC3T3-E1 and MG-63 cells, high antibacterial effects against S. aureus, and better in vitro osteogenic activity than their pure Zn counterparts. Furthermore, the HE Zn-5Gd exhibited better in vivo biocompatibility, osteogenesis, and osteointegration ability than pure Zn and pure Ti. STATEMENT OF SIGNIFICANCE: This work reports the mechanical properties, corrosion behaviors, cytocompatibility, antibacterial ability, in vitro and in vivo osteogenesis of biodegradable Zn-Gd alloy for bone-implant applications. Our findings demonstrate that the hot-rolled (HR) Zn-5Gd showed a unique combination of tensile properties with an ultimate tensile strength of ∼311.6 MPa, yield strength of ∼236.5 MPa, and elongation of ∼40.6%. The HR and HE Zn-5Gd showed higher corrosion resistance than their pure Zn counterpart in Hanks' solution. The HR and HE Zn-5Gd showed high cytocompatibility toward MC3T3-E1 and MG-63 cells, good antibacterial effects against S. aureus, and better in vitro osteogenic activity. Furthermore, the HE Zn-5Gd exhibited better in vivo biocompatibility, osteogenesis, and osteointegration ability than pure Zn and pure Ti.
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Affiliation(s)
- Xian Tong
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China; School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Yilong Dong
- Department of Orthopaedics, The Third Affiliated Hospital of Wenzhou Medical University (Ruian People's Hospital), Wenzhou 325016, China
| | - Yue Han
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China
| | - Runqi Zhou
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
| | - Li Zhu
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China
| | - Dechuang Zhang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Yilong Dai
- School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
| | - Xinkun Shen
- Department of Orthopaedics, The Third Affiliated Hospital of Wenzhou Medical University (Ruian People's Hospital), Wenzhou 325016, China
| | - Yuncang Li
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia
| | - Cuie Wen
- School of Engineering, RMIT University, Melbourne, Victoria 3001, Australia.
| | - Jixing Lin
- Institute of Stomatology, School and Hospital of Stomatology, Wenzhou Medical University, Wenzhou 325027, China.
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Choudhary M, Pereira J, Davidson EB, Colee J, Santra S, Jones JB, Paret ML. Improved Persistence of Bacteriophage Formulation with Nano N-Acetylcysteine-Zinc Sulfide and Tomato Bacterial Spot Disease Control. PLANT DISEASE 2023; 107:3933-3942. [PMID: 37368450 DOI: 10.1094/pdis-02-23-0255-re] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Bacteriophages are biocontrol agents used to manage bacterial diseases. They have long been used against plant pathogenic bacteria; however, several factors impede their use as a reliable disease management strategy. Short-lived persistence on plant surfaces under field conditions results mainly from rapid degradation by exposure to ultraviolet (UV) light. Currently, there are no effective commercial formulations that protect phages from UV. The phage ΦXp06-02-1, which lyses strains of the tomato bacterial spot pathogen Xanthomonas perforans, was mixed with different concentrations of the nanomaterial N-acetylcysteine surface-coated manganese-doped zinc sulfide (NAC-ZnS; 3.5 nm). In vitro, NAC-ZnS at 10,000 μg/ml formulated phage, when exposed to UV for 1 min, provided statistically equivalent plaque-forming unit (PFU) recovery as phages that were not exposed to UV. NAC-ZnS had no negative effect on the phage's ability to lyse bacterial cells under in vitro conditions. NAC-ZnS reduced phage degradation over time in comparison with the nontreated control, whereas N-acetylcysteine-zinc oxide (NAC-ZnO) had no effect. In fluorescent light, without UV exposure, NAC-ZnO-formulated phages were more infective than NAC-ZnS-formulated phages. The nanomaterial-phage mixture did not cause any phytotoxicity when applied to tomato plants. Following exposure to sunlight, the NAC-ZnS formulation improved phage persistence in the phyllosphere by 15 times compared with nonformulated phages. NAC-ZnO-formulated phage populations were undetectable within 32 h, whereas NAC-ZnS-formulated phage populations were detected at 103 PFU/g. At 4 h of sunlight exposure, NAC-ZnS-formulated phages at 1,000 μg/ml significantly reduced tomato bacterial spot disease severity by 16.4% compared with nonformulated phages. These results suggest that NAC-ZnS can be used to improve the efficacy of phages for bacterial diseases.
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Affiliation(s)
- Manoj Choudhary
- North Florida Research and Education Center, University of Florida, Gainesville, FL, U.S.A
- Department of Plant Pathology, University of Florida, Gainesville, FL, U.S.A
- ICAR - National Centre for Integrated Pest Management, PUSA, New Delhi, India
| | - Jorge Pereira
- NanoScience Technology Center, University of Central Florida, Orlando, FL, U.S.A
- Department of Chemistry, University of Central Florida, Orlando, FL, U.S.A
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, U.S.A
| | - Edwin B Davidson
- NanoScience Technology Center, University of Central Florida, Orlando, FL, U.S.A
- Department of Chemistry, University of Central Florida, Orlando, FL, U.S.A
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, U.S.A
| | - James Colee
- Statistical Consulting Unit, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, U.S.A
| | - Swadeshmukul Santra
- NanoScience Technology Center, University of Central Florida, Orlando, FL, U.S.A
- Department of Chemistry, University of Central Florida, Orlando, FL, U.S.A
- Burnett School of Biomedical Sciences, University of Central Florida, Orlando, FL, U.S.A
| | - Jeffrey B Jones
- Department of Plant Pathology, University of Florida, Gainesville, FL, U.S.A
| | - Mathews L Paret
- North Florida Research and Education Center, University of Florida, Gainesville, FL, U.S.A
- Department of Plant Pathology, University of Florida, Gainesville, FL, U.S.A
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He H, Luo H, Xu H, Qian B, Zou X, Zhang G, Zeng F, Zou J. Preclinical models and evaluation criteria of prostatitis. Front Immunol 2023; 14:1183895. [PMID: 37228599 PMCID: PMC10203503 DOI: 10.3389/fimmu.2023.1183895] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 04/24/2023] [Indexed: 05/27/2023] Open
Abstract
Prostatitis is a common urological condition that affects almost half of all men at some point in their life. The prostate gland has a dense nerve supply that contributes to the production of fluid to nourish sperm and the mechanism to switch between urination and ejaculation. Prostatitis can cause frequent urination, pelvic pain, and even infertility. Long-term prostatitis increases the risk of prostate cancer and benign prostate hyperplasia. Chronic non-bacterial prostatitis presents a complex pathogenesis, which has challenged medical research. Experimental studies of prostatitis require appropriate preclinical models. This review aimed to summarize and compare preclinical models of prostatitis based on their methods, success rate, evaluation, and range of application. The objective of this study is to provide a comprehensive understanding of prostatitis and advance basic research.
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Affiliation(s)
- Hailan He
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Hui Luo
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
| | - Hui Xu
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Institute of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China
| | - Biao Qian
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Institute of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China
| | - Xiaofeng Zou
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Institute of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China
| | - Guoxi Zhang
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Institute of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China
| | - Fei Zeng
- The First Clinical College, Gannan Medical University, Ganzhou, Jiangxi, China
| | - Junrong Zou
- Department of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Institute of Urology, The First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- Department of Urology, Jiangxi Engineering Technology Research Center of Calculi Prevention, Ganzhou, Jiangxi, China
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Nakamura J, Ito R, Kozaki R, Sugawara-Narutaki A, Ohtsuki C. Organic modification of layered zirconium phosphate/phosphonate for controlled release of therapeutic inorganic ions. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 22:1000-1012. [PMID: 34924816 PMCID: PMC8682853 DOI: 10.1080/14686996.2021.1993728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 10/08/2021] [Accepted: 10/11/2021] [Indexed: 06/14/2023]
Abstract
The present study aims to develop a layered zirconium phosphate/phosphonate (LZP) powder to control the release of therapeutic inorganic ions. Organically modified LZPs were successfully prepared with various contents of phenyl groups via a reflux method in an aqueous solution containing phosphoric and phenylphosphonic acids. Powder X-ray diffraction analysis and Fourier transform infrared spectroscopy revealed that the crystal structure of the synthesized LZP samples was identical to that of α-zirconium phosphate, even after modification. The amount of incorporated organic molecules increased with increasing molar fractions of phenylphosphonic acid in the starting composition, as determined from the thermal analysis. Cobalt ion (Co2+), a type of therapeutic inorganic ion, was incorporated into the organically modified LZP through treatment with an acetonitrile solution containing tetrabutylammonium ions, followed by treatment with an acetonitrile solution containing CoCl2. The amount of incorporated Co2+ depended on the concentration of the phenyl groups. Furthermore, the highest amount of Co2+ was incorporated in the sample (ZP-Ph-0.5) prepared with equimolar phosphoric/phenylphosphonic acid. The ZP-Ph-0.5 sample additionally showed the ability to incorporate copper or iron ions (Cu2+ or Fe3+). The incorporated ion, either Co2+ or Cu2+, was continuously released from the ZP-Ph-0.5 sample in a saline solution over a period of three weeks, whereas the release of Fe3+ was negligible. The quantity of Co2+ released was higher than that of Cu2+. The controlled release of Co2+ from the ZP-Ph-0.5 sample was also observed in a simulated body fluid that mimicked the ionic concentration of human blood plasma. These results confirm that a specific degree of phenyl modification makes LZP a candidate host material for releasing therapeutic inorganic ions.
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Affiliation(s)
- Jin Nakamura
- Institute for Advanced Research, Nagoya University, Nagoya, Japan
- Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Ryoya Ito
- Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | - Ryohei Kozaki
- Graduate School of Engineering, Nagoya University, Nagoya, Japan
| | | | - Chikara Ohtsuki
- Graduate School of Engineering, Nagoya University, Nagoya, Japan
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Bratchikov OI, Tyuzikov IA, Dubonos PA. Nutritional supplementation of the pharmacotherapy of prostate diseases. RESEARCH RESULTS IN PHARMACOLOGY 2021. [DOI: 10.3897/rrpharmacology.7.67465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction: Nutritional supplementation is an integral part of modern pharmacotherapeutic strategies for prostate diseases with different levels of evidence for specific nutrients.
Provitamin A (beta-carotene), vitamin A (retinol) and prostate diseases. Their effects have not been sufficiently studied, and the available data are conflicting to recommend them as a nutritional supplement.
Vitamin E (tocopherol) and prostate diseases. Its effects have not been sufficiently studied, and the available data are conflicting to recommend it as a nutritional supplement.
Vitamin C (ascorbic acid) and prostate diseases. Its effects have not been sufficiently studied, and the available data are conflicted to recommend it as a nutritional supplement.
Vitamin K and prostate diseases. Its effects have not been sufficiently studied, and the available data are conflicted to recommend it as a nutritional supplement.
Vitamin D and prostate diseases. The evidence base of the vitamin D prostatotropic effects has been accumulated, which allows us to consider its deficiency replacement as an effective nutritional supplement in prostate diseases.
Omega-3 PUFAs and prostate diseases. They have universal physiological effects; however, the evidence base for their recommendation as a nutritional supplement for prostate diseases is still insufficient.
Zinc and prostate diseases. Positive effects of zinc on the prostate gland are known for a fact and allow us to recommend it as a nutritional supplement for prostate diseases.
Selenium and prostate diseases. The reliably proven positive effects of selenium on the prostate gland allow us to recommend it as a nutritional supplement for prostate diseases.
Magnesium and prostate diseases. Its effects have not been sufficiently studied, and the available data are conflicting to recommend it as a nutritional supplement.
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Ben Amor N, Nava V, Albergamo A, Potortì AG, Lo Turco V, Ben Mansour H, Di Bella G. Tunisian essential oils as potential food antimicrobials and antioxidants and screening of their element profile. Eur Food Res Technol 2021. [DOI: 10.1007/s00217-021-03704-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Shobeirian F, Zerafatjou N, Ghomi Z, Vafaei M, Darabi M. Intraprostatic prophylactic antibiotic injection in patients undergoing transrectal ultrasonography-guided prostate biopsy. Int J Urol 2021; 28:683-686. [PMID: 33665862 DOI: 10.1111/iju.14541] [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: 12/11/2020] [Accepted: 02/07/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To evaluate the efficacy of intraprostatic injection of prophylactic antibiotics for the prevention of infections following transrectal ultrasonography-guided prostate biopsy. METHODS In this prospective interventional study, patients aged between 40 and 70 years with clinical indications for transrectal ultrasonography-guided prostate biopsy were enrolled. Consecutive patients who received intraprostatic injection of amikacin coupled with oral ciprofloxacin were compared with historical controls receiving only prophylactic oral fluoroquinolones prior to biopsy. Patients were followed for 7 days after biopsy for signs and symptoms of infection. RESULTS A total of 210 patients were included in this study (mean age 65.7 ± 7.8 years). Among patients without intraprostatic injection, nine (8.6%) developed infectious complications (lower urinary tract infection in seven patients, and prostatitis in two), which led to hospitalization in six patients (5.7%). None of the patients who received intraprostatic antibiotic injection developed infectious complications. The difference in the incidence of post-transrectal ultrasonography-guided biopsy infections between the two groups was statistically significant (P = 0.003). CONCLUSION Local intraprostatic antibiotic injection during transrectal ultrasonography-guided prostate biopsy adjuvant to oral fluoroquinolones can significantly reduce the rate of post-biopsy infectious complications.
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Affiliation(s)
- Farzaneh Shobeirian
- Razi Clinical Research Development Unit, Razi Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Nikan Zerafatjou
- Department of Urology, Shahid Rajaee Hospital, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Zahra Ghomi
- Department of Radiology, Shohada-E-Tajrish Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohamad Vafaei
- Radiology Ward, Borazjan Hospital, Bushehr University of Medical Science, Bushehr, Iran
| | - Mohsen Darabi
- Department of Radiology, Hasheminejad Hospital, Iran University of Medical Sciences, Tehran, Iran
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Active Packaging of Immobilized Zinc Oxide Nanoparticles Controls Campylobacter jejuni in Raw Chicken Meat. Appl Environ Microbiol 2020; 86:AEM.01195-20. [PMID: 32887715 DOI: 10.1128/aem.01195-20] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 08/24/2020] [Indexed: 01/08/2023] Open
Abstract
Zinc oxide nanoparticles (ZnO NPs) are regarded as a safe and stable antimicrobial that can inactivate bacteria by several potential working mechanisms. We aimed to incorporate ZnO NPs into packaging material to control Campylobacter in raw chicken meat. ZnO NPs were first incorporated into three-dimensional (3D) paper tubes to identify the lethal concentration against Campylobacter jejuni, which was selected as the working concentration to develop 2D functionalized absorbing pads by an ultrasound-assisted dipping technique. The functionalized pad was placed underneath raw chicken meat to inactivate C. jejuni and the predominant chicken microbiota at 4°C within 8 days of storage. Immobilized ZnO NPs at 0.856 mg/cm2 reduced C. jejuni from ∼4 log CFU/25 g raw chicken meat to an undetectable level after 3 days of storage. Analysis by inductively coupled plasma-optical emission spectroscopy showed that the Zn level increased from 0.02 to 0.17 mg/cm2 in treated raw chicken meat. Scanning electron microscopy validated the absence of nanoparticle migration onto raw chicken meat after treatment. Inactivation of C. jejuni was associated with the increase of lactic acid produced by Lactobacillus in raw chicken meat in a pH-dependent manner. Less than 5% of Zn2+ was released from ZnO NPs at neutral pH, while up to 88% was released when the pH was <3.5 within 2 days. Whole-transcriptome sequencing (RNA-Seq) analysis demonstrated a broad effect of ZnO NPs on genes involved in various cellular developmental processes as annotated by gene ontology. Taken together, the results indicate that functionalized absorbing pads inactivated C. jejuni in raw chicken meat by immobilized ZnO NPs along with the controllable released Zn2+ IMPORTANCE Prevalence of Campylobacter in raw poultry remains a major food microbiological safety challenge. Novel mitigation strategies are required to ensure the safety and quality of poultry products. Active food packaging can control pathogens without directly adding antimicrobials into the food matrix and extend the food's shelf life. The functionalized absorbing pad with ZnO NPs developed in this study was able to inactivate C. jejuni in raw chicken meat and keep the meat free from C. jejuni contamination during shelf life without any observed migration of nanoparticles. The controllable conversion of immobilized ZnO NPs to free Zn2+ makes this approach safe and eco-friendly and paves the way for developing a novel intervention strategy for other high-risk foods. Our study applied nanotechnology to exploit an effective approach for Campylobacter control in raw chicken meat products.
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Sengel-Turk CT, Alcigir ME, Ekim O, Bakar-Ates F, Hascicek C. Clinicopathological and immunohistochemical evaluation of lonidamine-entrapped lipid-polymer hybrid nanoparticles in treatment of benign prostatic hyperplasia: An experimental rat model. Eur J Pharm Biopharm 2020; 157:211-220. [PMID: 33129926 DOI: 10.1016/j.ejpb.2020.10.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 09/30/2020] [Accepted: 10/25/2020] [Indexed: 11/25/2022]
Abstract
Benign prostatic hyperplasia (BPH) is a progressive proliferative disease, the incidence of which is constantly increasing due to aging of population. In this research, a hexokinase-II enzyme inhibiting agent, lonidamine - the use of which is limited in BPH treatment due to high hepatic toxicity observed after three months of treatment - was selected as an active agent, based on its mechanism of action in treating BPH. The aim of this study was to evaluate in vivo therapeutic efficacy and hepatic toxicity of lipid-polymer hybrid nanoparticles of lonidamine in a rat BPH model created in rat prostates. After local injections of hybrid nanoparticles of lonidamine were administered to the rat prostates, hyperplasic structures of prostates were evaluated in terms of prostatic index values, immunohistochemical evaluations, and histopathological findings. Liver blood enzyme values were also determined to specify hepatic toxicity. Apoptosis was evaluated by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) reaction and histopathological methods to determine intravital degenerative destruction in liver. Through this study, lonidamine-loaded hybrid nanoparticles were found to reduce the hepatic toxicity and increase therapeutic efficiency of lonidamine. Therefore, lonidamine-entrapped hybrid nanoparticles may provide a promising, and very safe, drug delivery strategy in the treatment of BPH.
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Affiliation(s)
- Ceyda Tuba Sengel-Turk
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara, Turkey.
| | - Mehmet Eray Alcigir
- Kirikkale University, Faculty of Veterinary Medicine, Department of Pathology, Kirikkale, Turkey
| | - Okan Ekim
- Ankara University, Faculty of Veterinary Medicine, Department of Anatomy, Ankara, Turkey
| | - Filiz Bakar-Ates
- Ankara University, Faculty of Pharmacy, Department of Biochemistry, Ankara, Turkey
| | - Canan Hascicek
- Ankara University, Faculty of Pharmacy, Department of Pharmaceutical Technology, Ankara, Turkey
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Pretreatment with zinc protects Kupffer cells following administration of microbial products. Biomed Pharmacother 2020; 127:110208. [PMID: 32417689 DOI: 10.1016/j.biopha.2020.110208] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2020] [Revised: 04/26/2020] [Accepted: 04/28/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Systemic inflammation and severe fibrosis can reduce serum zinc levels, while zinc supplementation is reported to improve the prognosis of patients with chronic liver disease (CLD). OBJECTIVES We aimed to investigate the clinical application of serum zinc in patients with CLD and the anti-infective mechanism of zinc supplementation. METHODS Based on the serum zinc level, 149 CLD patients were divided into 3 groups and their clinical parameters were compared. In in-vitro experiments, microbial isolates derived from patients were used to stimulate human liver non-parenchymal cells, and the zinc sulfate solution was added in certain experiments. The effect of zinc was compared by LDH and thromboxane A2 levels in the cell supernatant. RESULT Compared with other groups, patients with low serum zinc levels had significantly higher C-reactive protein (CRP), total bilirubin, INR, creatinine, and MELD scores, while albumin and GOT levels were reduced. Only CRP and albumin were significantly correlated with serum zinc in both low and normal-zinc groups. Bacterial isolates significantly increased LDH levels in Kupffer cells (KCs) and stellate cells but had no effect on sinusoidal endothelial cells, whereas zinc pretreatment protected KCs but not stellate cells. Thromboxane A2 secreted by KCs can also be induced by bacterial stimulation, accompanied by increased gene expression of Myd88, MAPK and NF-kB, while zinc pretreatment can attenuate that. CONCLUSION Serum zinc levels can be used to estimate infection and liver fibrosis in CLD patients. As a new antibacterial weapon, zinc supplementation acts on KCs through Myd88-MAPK related pathways.
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Maxwell TJ, Rajasekaran P, Das S, Campos MGN, Young M, Mendis HC, Ozcan A, Gerberich KM, Myers ME, Graham JH, Johnson EG, Santra S. Control of Citrus Canker in Greenhouse and Field with a Zinc, Urea, and Peroxide Ternary Solution. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:12393-12401. [PMID: 31596571 DOI: 10.1021/acs.jafc.9b05108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Accumulation of toxic copper in soil and development of copper-resistant pests are emerging challenges currently faced by the agricultural community worldwide. As an alternative, we have developed a ternary zinc chelate solution (TSOL) pesticide where zinc ions are the primary active ingredient. The material is composed of zinc, urea, and hydrogen peroxide. Urea was chosen as it is widely used as a plant fertilizer and can also bind to both zinc and hydrogen peroxide. No phytotoxicity was observed with TSOL on Meyer lemon (Citrus × meyeri) seedlings at a field spray rate of 800 μg/mL Zn metal concentration. Antimicrobial studies showed that TSOL exhibited improved killing efficacy against Escherichia coli and Xanthomonas alfalfae compared to Zn ions alone. Citrus canker field trials in a grapefruit (Chrysopelea paradisi) grove over three years showed that TSOL provided comparable disease protection to copper products at an equivalent or lower metal content.
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Affiliation(s)
| | | | | | | | | | | | | | - Kayla M Gerberich
- Citrus Research and Education Center , University of Florida , 700 Experiment Station Road , Lake Alfred , Florida 33850 , United States
| | - Monty E Myers
- Indian River Research and Education Center , University of Florida , 2199 South Rock Road , Fort Pierce , Florida 34945 , United States
| | - James H Graham
- Citrus Research and Education Center , University of Florida , 700 Experiment Station Road , Lake Alfred , Florida 33850 , United States
| | - Evan G Johnson
- Citrus Research and Education Center , University of Florida , 700 Experiment Station Road , Lake Alfred , Florida 33850 , United States
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Liu SH, Rawal TB, Soliman M, Lee B, Maxwell T, Rajasekaran P, Mendis HC, Labbé N, Santra S, Tetard L, Petridis L. Antimicrobial Zn-Based "TSOL" for Citrus Greening Management: Insights from Spectroscopy and Molecular Simulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6970-6977. [PMID: 31150237 DOI: 10.1021/acs.jafc.9b02466] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Huanglongbing (HLB), also known as citrus greening, is a bacterial disease that poses a devastating threat to the citrus industry worldwide. To manage this disease efficiently, we developed and characterized a ternary aqueous solution (TSOL) that contains zinc nitrate, urea, and hydrogen peroxide. We report that TSOL exhibits better antimicrobial activity than commercial bactericides for growers. X-ray fluorescence analysis demonstrates that zinc is delivered to citrus leaves, where the bacteria reside. FTIR and Raman spectroscopy, molecular dynamics simulations, and density functional theory calculations elucidate the solution structure of TSOL and reveal a water-mediated interaction between Zn2+ and H2O2, which may facilitate the generation of highly reactive hydroxyl radicals contributing to superior antimicrobial activity of TSOL. Our results not only suggest TSOL as a potent antimicrobial agent to suppress bacterial growth in HLB-infected trees, but also provide a structure-property relationship that explains the superior performance of TSOL.
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Affiliation(s)
- Shih-Hsien Liu
- Center for Renewable Carbon , The University of Tennessee , Knoxville , Tennessee 37996 , United States
- UT/ORNL Center for Molecular Biophysics , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Takat B Rawal
- Department of Biochemistry & Cellular and Molecular Biology , The University of Tennessee , Knoxville , Tennessee 37996 , United States
- UT/ORNL Center for Molecular Biophysics , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
| | - Mikhael Soliman
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
| | - Briana Lee
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
| | - Tyler Maxwell
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
| | - Parthiban Rajasekaran
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
| | - Hajeewaka C Mendis
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
| | - Nicole Labbé
- Center for Renewable Carbon , The University of Tennessee , Knoxville , Tennessee 37996 , United States
| | - Swadeshmukul Santra
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
- Department of Chemistry, Department of Materials Science & Engineering and Burnett School of Biomedical Sciences , University of Central Florida , Orlando , Florida 32826 , United States
| | - Laurene Tetard
- NanoScience Technology Center , University of Central Florida , Orlando , Florida 32826 , United States
- Department of Physics , University of Central Florida , Orlando , Florida 32826 , United States
| | - Loukas Petridis
- Department of Biochemistry & Cellular and Molecular Biology , The University of Tennessee , Knoxville , Tennessee 37996 , United States
- UT/ORNL Center for Molecular Biophysics , Oak Ridge National Laboratory , Oak Ridge , Tennessee 37831 , United States
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An analysis of benign human prostate offers insights into the mechanism of apocrine secretion and the origin of prostasomes. Sci Rep 2019; 9:4582. [PMID: 30872668 PMCID: PMC6418221 DOI: 10.1038/s41598-019-40820-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 02/22/2019] [Indexed: 12/24/2022] Open
Abstract
The structure and function of normal human prostate is still not fully understood. Herein, we concentrate on the different cell types present in normal prostate, describing some previously unreported types and provide evidence that prostasomes are primarily produced by apocrine secretion. Patients (n = 10) undergoing TURP were prospectively consented based on their having a low risk of harbouring CaP. Scanning electron microscopy and transmission electron microscopy was used to characterise cell types and modes of secretion. Zinc levels were determined using Inductively Coupled Plasma Mass Spectrometry. Although merocrine secretory cells were noted, the majority of secretory cells appear to be apocrine; for the first time, we clearly show high-resolution images of the stages of aposome secretion in human prostate. We also report a previously undescribed type of epithelial cell and the first ultrastructural image of wrapping cells in human prostate stroma. The zinc levels in the tissues examined were uniformly high and X-ray microanalysis detected zinc in merocrine cells but not in prostasomes. We conclude that a significant proportion of prostasomes, possibly the majority, are generated via apocrine secretion. This finding provides an explanation as to why so many large proteins, without a signal peptide sequence, are present in the prostatic fluid.
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Yoon BI, Bae WJ, Choi YS, Kim SJ, Ha US, Hong SH, Sohn DW, Kim SW. Anti-inflammatory and Antimicrobial Effects of Anthocyanin Extracted from Black Soybean on Chronic Bacterial Prostatitis Rat Model. Chin J Integr Med 2018; 24:621-626. [PMID: 24126975 DOI: 10.1007/s11655-013-1547-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2013] [Indexed: 01/21/2023]
Abstract
OBJECTIVE To investigated the anti-inflammatory and antimicrobial effects of anthocyanins extracted from black soybean on the chronic bacterial prostatitis (CBP) rat model. METHODS The Sprague-Dawley rats were divided into 4 groups, including control, ciprofloxacin, anthocyanins and anthocyanins with ciprofloxacin groups (n=8 in each group). Then, drip infusion of bacterial suspension (Escherichia coli Z17 O2:K1:H-) into Sprague-Dawley rats was conducted to induce CBP. In 4 weeks, results of prostate tissue, urine culture, and histological analysis on the prostate were analyzed for each group. RESULTS The use of ciprofloxacin, anthocyanins, and anthocyanins with ciprofloxacin showed statistically significant decreases in bacterial growth and improvements in the reduction of prostatic inflammation compared with the control group (P<0.05). The anthocyanins with ciprofloxacin group showed a statistically significant decrease in bacterial growth and improvement in prostatic inflammation compared with the ciprofloxacin group (P<0.05). CONCLUSIONS These results suggest that anthocyanins may have anti-inflammatory and antimicrobial effects, as well as a synergistic effect with ciprofloxacin. Therefore, we suggest that the combination of anthocyanins and ciprofloxacin may be effective in treating CBP to obtain a higher rate of treatment success.
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Affiliation(s)
- Byung Il Yoon
- Department of Urology, International St Mary's Hospital, The Catholic Kwandong University of Korea, Incheon, Republic of Korea
| | - Woong Jin Bae
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Yong Sun Choi
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Su Jin Kim
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - U Syn Ha
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sung-Hoo Hong
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Dong Wan Sohn
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sae Woong Kim
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.
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Mesoporous silica-based bioactive glasses for antibiotic-free antibacterial applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 83:99-107. [DOI: 10.1016/j.msec.2017.11.003] [Citation(s) in RCA: 100] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2017] [Revised: 08/23/2017] [Accepted: 11/09/2017] [Indexed: 01/23/2023]
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Abu Ali H, Shalash AM, Akkawi M, Jaber S. Synthesis, characterization and
in vitro
biological activity of new zinc(II) complexes of the nonsteroidal anti‐inflammatory drug sulindac and nitrogen‐donor ligands. Appl Organomet Chem 2017. [DOI: 10.1002/aoc.3772] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hijazi Abu Ali
- Department of ChemistryBirzeit University West Bank Palestine
| | - Asia M. Shalash
- Department of ChemistryBirzeit University West Bank Palestine
| | - Mutaz Akkawi
- Department of Life SciencesAl‐Quds University West Bank Palestine
| | - Suhair Jaber
- Department of Life SciencesAl‐Quds University West Bank Palestine
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Naseri S, Lepry WC, Nazhat SN. Bioactive glasses in wound healing: hope or hype? J Mater Chem B 2017; 5:6167-6174. [DOI: 10.1039/c7tb01221g] [Citation(s) in RCA: 105] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Bioactive glasses have long been investigated in mineralized tissue regeneration, but recently their potential applications in soft tissue repair, and in particular wound healing, have demonstrated great promise.
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Affiliation(s)
- Shiva Naseri
- Department of Mining and Materials Engineering
- McGill University
- Montreal
- Canada
| | - William C. Lepry
- Department of Mining and Materials Engineering
- McGill University
- Montreal
- Canada
| | - Showan N. Nazhat
- Department of Mining and Materials Engineering
- McGill University
- Montreal
- Canada
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Kim MS, Ko K, Kim HJ, Lee J, Myung SC. Zinc induces LPS-mediated upregulation of HBD-2 via ERK1/2 and p38MAPK signaling pathways in human prostate epithelial cells. Anim Cells Syst (Seoul) 2016. [DOI: 10.1080/19768354.2016.1242513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Yang X, Li H, Zhang C, Lin Z, Zhang X, Zhang Y, Yu Y, Liu K, Li M, Zhang Y, Lv W, Xie Y, Lu Z, Wu C, Teng R, Lu S, He M, Mo Z. Serum quantitative proteomic analysis reveals potential zinc-associated biomarkers for nonbacterial prostatitis. Prostate 2015; 75:1538-55. [PMID: 26010976 DOI: 10.1002/pros.23028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 05/05/2015] [Indexed: 02/01/2023]
Abstract
BACKGROUND Prostatitis is one of the most common urological problems afflicting adult men. The etiology and pathogenesis of nonbacterial prostatitis, which accounts for 90-95% of cases, is largely unknown. As serum proteins often indicate the overall pathologic status of patients, we hypothesized that protein biomarkers of prostatitis might be identified by comparing the serum proteomes of patients with and without nonbacterial prostatitis. METHODS All untreated samples were collected from subjects attending the Fangchenggang Area Male Health and Examination Survey (FAMHES). We profiled pooled serum samples from four carefully selected groups of patients (n = 10/group) representing the various categories of nonbacterial prostatitis (IIIa, IIIb, and IV) and matched healthy controls using a mass spectrometry-based 4-plex iTRAQ proteomic approach. More than 160 samples were validated by ELISA. RESULTS Overall, 69 proteins were identified. Among them, 42, 52, and 37 proteins were identified with differential expression in Category IIIa, IIIb, and IV prostatitis, respectively. The 19 common proteins were related to immunity and defense, ion binding, transport, and proteolysis. Two zinc-binding proteins, superoxide dismutase 3 (SOD3), and carbonic anhydrase I (CA1), were significantly higher in all types of prostatitis than in the control. A receiver operating characteristic curve estimated sensitivities of 50.4 and 68.1% and specificities of 92.1 and 83.8% for CA1 and SOD3, respectively, in detecting nonbacterial prostatitis. The serum CA1 concentration was inversely correlated to the zinc concentration in expressed-prostatic secretions. CONCLUSIONS Our findings suggest that SOD3 and CA1 are potential diagnostic markers of nonbacterial prostatitis, although further large-scale studies are required. The molecular profiles of nonbacterial prostatitis pathogenesis may lay a foundation for discovery of new therapies.
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Affiliation(s)
- Xiaoli Yang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Hongtao Li
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Chengdong Zhang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Zhidi Lin
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Xinhua Zhang
- Department of Urology, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Youjie Zhang
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Yanbao Yu
- J Craig Venter Institute, Rockville, Maryland
| | - Kun Liu
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Muyan Li
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Yuening Zhang
- Medical Scientific Research Center, Guangxi Medical University, Nanning, Guangxi, China
| | - Wenxin Lv
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Department of Urology, Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi, China
| | - Yuanliang Xie
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Zheng Lu
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Chunlei Wu
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Ruobing Teng
- Center for Reproductive Medicine, Affiliated Hospital of Guilin Medical University, Guilin, Guangxi, China
| | - Shaoming Lu
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Center for Reproductive Medicine, Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
| | - Min He
- Public Health of Guangxi Medical University, Guangxi Medical University, Nanning, Guangxi, China
| | - Zengnan Mo
- Institute of Urology and Nephrology, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
- Center for Genomic and Personalized Medicine, Guangxi Medical University, Nanning, Guangxi, China
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Bacterial inhibition potential of 3D rapid-prototyped magnesium-based porous composite scaffolds--an in vitro efficacy study. Sci Rep 2015; 5:13775. [PMID: 26346217 PMCID: PMC4561899 DOI: 10.1038/srep13775] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 08/05/2015] [Indexed: 12/20/2022] Open
Abstract
Bone infections are common in trauma-induced open fractures with bone defects. Therefore, developing anti-infection scaffolds for repairing bone defects is desirable. This study develoepd novel Mg-based porous composite scaffolds with a basal matrix composed of poly(lactic-co-glycolicacid) (PLGA) and tricalcium phosphate (TCP). A unique low-temperature rapid prototyping technology was used to fabricate the scaffolds, including PLGA/TCP (PT), PLGA/TCP/5%Mg (PT5M), PLGA/TCP/10%Mg (PT10M), and PLGA/TCP/15%Mg (PT15M). The bacterial adhesion and biofilm formation of Staphylococcus aureus were evaluated. The results indicated that the Mg-based scaffolds significantly inhibited bacterial adhesion and biofilm formation compared to PT, and the PT10M and PT15M exhibited significantly stronger anti-biofilm ability than PT5M. In vitro degratation tests revealed that the degradation of the Mg-based scaffolds caused an increase of pH, Mg(2+) concentration and osmolality, and the increased pH may be one of the major contributing factors to the antibacterial function of the Mg-based scaffolds. Additionally, the PT15M exhibited an inhibitory effect on cell adhesion and proliferation of MC3T3-E1 cells. In conclusion, the PLGA/TCP/Mg scaffolds could inhibit bacterial adhesion and biofilm formation, and the PT10M scaffold was considered to be an effective composition with considerable antibacterial ability and good cytocompatibility.
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21
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Maryan AS, Montazer M. Natural and organo-montmorillonite as antibacterial nanoclays for cotton garment. J IND ENG CHEM 2015. [DOI: 10.1016/j.jiec.2014.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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22
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Sánchez-Salcedo S, Shruti S, Salinas AJ, Malavasi G, Menabue L, Vallet-Regí M. In vitro antibacterial capacity and cytocompatibility of SiO 2-CaO-P 2O 5 meso-macroporous glass scaffolds enriched with ZnO. J Mater Chem B 2014; 2:4836-4847. [PMID: 32261775 DOI: 10.1039/c4tb00403e] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Zn2+ ions exhibit osteogenic, angiogenic and antimicrobial properties. For this reason, they are often added in small amounts to bioceramics being investigated for bone tissue engineering. In this paper, the cytocompatibility and antibacterial properties of 80% SiO2-15% CaO-5% P2O5 (mol%) mesoporous bioactive glass (MBG) scaffolds substituted with 4.0% and 7.0% of ZnO were studied and compared with the Zn-free scaffold. Cell proliferation, morphology, differentiation and cytotoxic effects of Zn2+ ions released from the samples were examined by culturing human osteoblast-like cells (HOS) osteoblasts both in the presence of sample extracts and on the scaffold surface. The bacterial inhibition capacity of the scaffolds was explored by using Gram-positive Stapylococcus aureus bacteria, responsible for numerous infections in orthopedic surgery, to simulate a severe infection. Our results show that the Zn-MBG scaffolds possess a hierarchical meso-macropore structure suitable for osteoblast growth. Furthermore, the amount of Zn2+ released from the scaffold with 4.0% ZnO was found to be more favorable for HOS cell development than that released from the scaffold including 7.0% ZnO. Zn2+ released to the medium from both scaffolds exhibited antibacterial properties against S. aureus. Thus, the cytocompatibility and the antibacterial ability exhibited by the MBG scaffold containing 4.0% ZnO make it a suitable candidate for bone regeneration applications.
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Affiliation(s)
- Sandra Sánchez-Salcedo
- Departamento de Química Inorgánica y Bioinorgánica, Facultad de Farmacia, Universidad Complutense de Madrid, Plaza Ramón y Cajal s/n, 28040 Madrid, Spain.
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Abstract
The immunomodulatory and antimicrobial properties of zinc and copper have long been appreciated. In addition, these metal ions are also essential for microbial growth and survival. This presents opportunities for the host to either harness their antimicrobial properties or limit their availability as defence strategies. Recent studies have shed some light on mechanisms by which copper and zinc regulation contribute to host defence, but there remain many unanswered questions at the cellular and molecular levels. Here we review the roles of these two metal ions in providing protection against infectious diseases in vivo, and in regulating innate immune responses. In particular, we focus on studies implicating zinc and copper in macrophage antimicrobial pathways, as well as the specific host genes encoding zinc transporters (SLC30A, SLC39A family members) and CTRs (copper transporters, ATP7 family members) that may contribute to pathogen control by these cells.
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Jaisai M, Baruah S, Dutta J. Paper modified with ZnO nanorods - antimicrobial studies. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2012; 3:684-691. [PMID: 23213632 PMCID: PMC3512118 DOI: 10.3762/bjnano.3.78] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2012] [Accepted: 09/14/2012] [Indexed: 05/27/2023]
Abstract
Paper with antimicrobial properties was developed through in situ growth of ZnO nanorods. The targeted application for this type of paper is in health centers as wallpaper, writing paper, facemasks, tissue paper, etc. The paper was tested on three model microbes, Gram-positive bacteria Staphylococcus aureus, Gram-negative bacteria Escherichia coli and common airborne fungus Aspergillus niger. No viable bacterial colonies or fungal spores could be detected in the areas surrounding test samples of the antimicrobial paper. Gram-negative bacteria Escherichia coli were found to be inhibited in an area that is 239% and 163% the area of the paper sample under different room lighting conditions, i.e., halogen and fluorescent lamp illumination, respectively. For Gram-positive bacteria Staphylococcus aureus the zones of inhibition surrounding the paper samples are 102% and 70%, and for Aspergillus niger, 224% and 183% of the sample area, under similar lighting conditions.
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Affiliation(s)
- Mayuree Jaisai
- Center of Excellence in Nanotechnology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Sunandan Baruah
- Center of Excellence in Nanotechnology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
- Assam Don Bosco University, Azara, Guwahati 781017, India
| | - Joydeep Dutta
- Center of Excellence in Nanotechnology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
- Chair in Nanotechnology, Water Research Center, Sultan Qaboos University, PO Box 17, Postal Code 123, Al Khoud, Oman
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Das RR, Singh M, Shafiq N. Short-term therapeutic role of zinc in children < 5 years of age hospitalised for severe acute lower respiratory tract infection. Paediatr Respir Rev 2012; 13:184-91. [PMID: 22726876 DOI: 10.1016/j.prrv.2012.01.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2011] [Revised: 01/08/2012] [Accepted: 01/21/2012] [Indexed: 10/28/2022]
Abstract
In contrast to its 'preventive role', no consensus has evolved for the therapeutic role of zinc in pneumonia in children. We conducted a meta-analysis to find the therapeutic role of zinc in children <5 years of age hospitalised for severe acute lower respiratory tract infection (ALRTI). A comprehensive search was performed of the major electronic databases. Randomised controlled trials (RCTs) comparing treatment with zinc versus placebo were included. Seven RCTs (1066 subjects) conducted in developing countries were eligible for inclusion. There was no significant difference between the two groups regarding the time of resolution of severe illness (standardised mean difference (SMD) -0.15 (95% confidence interval (CI) -0.5, 0.2; p=0.4)) and duration of hospitalisation (SMD -0.29 (95% CI -0.68, -0.09; p=0.13)). No significant difference between the two groups was also noted for other parameters (duration of resolution of hypoxia, chest indrawing or tachypnoea, change of antibiotics and treatment failure rates). The adverse events were not significant. To conclude, present available data do not support the efficacy of zinc in treatment of severe ALRTI.
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Affiliation(s)
- Rashmi Ranjan Das
- Department of Pediatrics, All India Institute of Medical Sciences (AIIMS), New Delhi-110029, India.
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DAI G, YU A, CAI X, SHI Q, OUYANG Y, TAN S. Synthesis, characterization and antimicrobial activity of zinc and cerium co-doped α-zirconium phosphate. J RARE EARTH 2012. [DOI: 10.1016/s1002-0721(12)60137-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Köse DA, Ay AN, Şahin O, Büyükgüngör O. A mononuclear, mixed (salicylato) (nicotinamide) complex of Zn(II) with penta- and hexa-coordination sites: a novel framework structure. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2012. [DOI: 10.1007/s13738-012-0072-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Schiller DS, Parikh A. Identification, pharmacologic considerations, and management of prostatitis. ACTA ACUST UNITED AC 2012; 9:37-48. [PMID: 21459307 DOI: 10.1016/j.amjopharm.2011.02.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2011] [Indexed: 02/03/2023]
Abstract
BACKGROUND Prostatitis is a collection of signs and symptoms that occur as a result of inflammation or swelling of the prostate gland. There are many different causes for prostatitis, including infection; occasionally no clear etiology for the inflammation is found. Effective treatment often depends on identification of the cause, but a microbiologic organism is not always detectable, especially in cases of chronic prostatitis. OBJECTIVE The aim of this article was to review identification and treatment options for prostatitis, including pharmacologic and nonpharmacologic interventions. METHODS Relevant information was identified through a search of MEDLINE (1966-June 2010), International Pharmaceutical Abstracts (1970-June 2010), and EMBASE (1947-June 2010). Randomized, controlled trials that examined prostate cancer, benign prostatic hypertrophy, or procedures related to the prostate (ie, biopsies) were excluded. RESULTS A working classification system for prostatitis was developed in 1999, but there are few randomized controlled trials that distinguish between the various treatment options. Bacterial prostatitis can be acute or chronic but always requires some degree of antimicrobial therapy. Pharmacologic features of fluoroquinolones make them the preferred agents for most patients. These antibiotics can become trapped in a chronically inflamed prostate due to pH differences between prostatic tissue and serum. Many fluoroquinolones have penetration ratios (prostate level:serum level) of up to 4:1. A study in European men (N = 117) who received levofloxacin 500 mg/d with a diagnosis of chronic bacterial prostatitis demonstrated clinical success rates of 92% (95% CI 84.8%-96.5%), 77.4% (95% CI, 68.2-84.9%), 66.0% (95% CI, 56.2%-75.0%), and 61.9% (95% CI, 51.9%-71.2%) at 5-12 days, 1 month, 3 months, and 6 months after treatment. Additionally, there have been numerous randomized, placebo-controlled trials in patients with chronic prostatitis that have studied α-blockers, steroid inhibitors, anti-inflammatory agents, and bioflavonoids. Treatment responses to α-blockers appear to be greater with longer durations of therapy in α-blocker-naïve patients (National Institutes of Health-Chronic Prostatitis Symptom Index [NIH-CPSI] score reduction of at least 3.6 points after 6 weeks of tamsulosin therapy [P = 0.04] and up to 14.3 and 9.9 point NIH-CPSI score reductions with 14 weeks of terazosin and 24 weeks of alfuzosin therapy, respectively [P = 0.01 for both]). Combination therapy with an α-blocker, an anti-inflammatory, and a muscle relaxant does not appear to offer significant advantages over monotherapy (12.7 vs 12.4 point reduction in NIH-CPSI scores) and a stepwise approach to therapy involving antibiotics followed by bioflavonoids and then α-blockers appears to effectively reduce symptoms for up to 1 year in patients with chronic prostatitis (mean NIH-CPSI point reduction of 9.5 points compared with baseline, P < 0.0001). Patients who have had multiple unsuccessful treatment regimens may benefit from direct stimulation of the pelvic muscles through electromagnetic or electroacupuncture therapy. CONCLUSIONS Prostatitis can resemble various other medical conditions but proper classification and an understanding of the pharmacologic features and expectations of the medications used to treat it can help identify effective treatment strategies. Fluoroquinolones are the preferred agents for treating bacterial causes of prostatitis and have demonstrated efficacy in some cases of chronic prostatitis when an organism has not been identified. However, the use of agents with anti-inflammatory or antiadrenergic properties may be necessary in combination with or after trying antimicrobial agents.
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Affiliation(s)
- Daryl S Schiller
- Department of Pharmacy, Saint Barnabas Medical Center, Livingston, New Jersey 07039, USA.
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Mouriño V, Cattalini JP, Boccaccini AR. Metallic ions as therapeutic agents in tissue engineering scaffolds: an overview of their biological applications and strategies for new developments. J R Soc Interface 2011; 9:401-19. [PMID: 22158843 PMCID: PMC3262432 DOI: 10.1098/rsif.2011.0611] [Citation(s) in RCA: 222] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
This article provides an overview on the application of metallic ions in the fields of regenerative medicine and tissue engineering, focusing on their therapeutic applications and the need to design strategies for controlling the release of loaded ions from biomaterial scaffolds. A detailed summary of relevant metallic ions with potential use in tissue engineering approaches is presented. Remaining challenges in the field and directions for future research efforts with focus on the key variables needed to be taken into account when considering the controlled release of metallic ions in tissue engineering therapeutics are also highlighted.
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Affiliation(s)
- Viviana Mouriño
- Department of Pharmaceutical Technology, Faculty of Pharmacy and Biochemistry, University of Buenos Aires, 956 Junín Street, Sixth Floor, Buenos Aires CP1113, Argentina
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Gao M, Ding H, Zhong G, Lu J, Wang H, Li Q, Wang Z. The effects of transrectal radiofrequency hyperthermia on patients with chronic prostatitis and the changes of MDA, NO, SOD, and Zn levels in pretreatment and posttreatment. Urology 2011; 79:391-6. [PMID: 22100490 DOI: 10.1016/j.urology.2011.08.046] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Revised: 08/17/2011] [Accepted: 08/20/2011] [Indexed: 01/08/2023]
Abstract
OBJECTIVE To assess the effect of transrectal radiofrequency hyperthermia (TRFH) in 159 patients with chronic prostatitis (CP) and explore the changes of reactive oxygen species in CP patients pretreatment and posttreatment. METHODS Patients diagnosed with CP were randomized to 6 weeks of tamsulosin plus clarithromycin, TRFH, or TRFH with tamsulosin plus clarithromycin group. The primary outcome measure was evaluated by the National Institutes of Health Chronic Prostatitis Symptom Index. Malondiadehyde (MDA), superoxide dismutase (SOD), and nitrogen monoxide (NO) were measured by biochemical assay. Zinc (Zn) content was assayed by atomical spectrophotography. RESULTS All 105 patients in the TRFH or TRFH with tamsulosin plus clarithromycin group showed statistically significant improvement of pain, quality of life, and micturition domains compared with the tamsulosin plus clarithromycin group. Regardless of type IIIa or type IIIb CP, there was a significant improvement in the TRFH or TRFH with tamsulosin plus clarithromycin group compared with tamsulosin plus clarithromycin group (P<.05). Compared with pretreatment, MDA, NO, and Zn were decreased in type II and IIIa, whereas SOD was only increased significantly in type II (P<.05). CONCLUSION Our study reveals TRFH as an effective therapy option for CP, especially type IIIa or type IIIb CP. The results of TRFH with tamsulosin plus clarithromycin group was superior to the TRFH group or the tamsulosin plus clarithromycin group alone. In comparison with pretreatment, differences in reactive oxygen species levels and Zn in CP patients suggest that these factors could be used as a biomarker to evaluate the symptoms of CP and the effects of treatment.
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Affiliation(s)
- Mingdong Gao
- Institute of Urology, Department of Urology, the Second Hospital of Lanzhou University, Lanzhou, China
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Wu J, Yuan Q, Zhang D, Zhang X, Zhao L, Zhang X, Ruan J. Evaluation of Chinese medicine Qian-Yu for chronic bacterial prostatitis in rats. Indian J Pharmacol 2011; 43:532-5. [PMID: 22021995 PMCID: PMC3195122 DOI: 10.4103/0253-7613.84964] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2010] [Revised: 02/16/2011] [Accepted: 07/01/2011] [Indexed: 11/16/2022] Open
Abstract
Objectives: Qian-Yu (QY), a Chinese medicine formula, has anti-inflammatory and broad spectrum anti-bacterial activity. This study is undertaken to evaluate the anti-inflammatory effects of Qian-Yu (QY) in chronic bacterial prostatitis (CBP). Materials and Methods: The potential of QY in the treatment of CBP was evaluated using a CBP animal model by examining the anti-inflammatory activity. Its consequences were analyzed by immunological and histopathological methods. Experimental chronic bacterial prostatitis was induced by instillation of bacterial suspension of Escherichia coli 7.5 × 105 CFU/ml into the prostatic urethra. Animals were followed up for four weeks and then treated with either 7 mg/kg QY or 7 mg/kg positive control agent-Qianlietai (QLT) or 1 ml of phosphate-buffered saline (PBS) for the controls. Ten rats in each group were sacrificed at the end of four weeks. The inhibition of inflammation and its consequences were analyzed histologically. Prostatic IL-8, SIgA and zinc concentrations were measured by ELISA, RIA and ICP-AES, respectively. The data was expressed as mean ± S.D. Least-significant difference (LSD) of one-way ANOVA (SPSS 12.0) was used to determine the differences of scores. Results: The histopathology showed resolving prostatitis in QY-and QLT-treated groups and the immunology showed reduction of IL-8 and increment of SIgA contents in prostatic tissues as compared to the control groups. The prostatic zinc levels were higher in the QY-and QLT-treated groups than those in the controls. These results suggested that QY is effective in CBP treatment.
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Affiliation(s)
- Jinhu Wu
- Department of Pharmacology, Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China
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Kim HW, Ha US, Woo JC, Kim SJ, Yoon BI, Lee SJ, Cho YH. Preventive effect of selenium on chronic bacterial prostatitis. J Infect Chemother 2011; 18:30-4. [PMID: 21814801 DOI: 10.1007/s10156-011-0276-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 06/20/2011] [Indexed: 11/30/2022]
Abstract
The antibiotic treatment rate of chronic bacterial prostatitis (CBP) is low, and long-term administration can result in adverse events and bacterial resistance. For these reasons, a new preventive modality, which can replace traditional antibiotic therapy, is required. To evaluate the preventive effect of selenium on CBP, the pre-treatments were divided into four groups, administered for 4 weeks, as follows: (1) control, (2) ciprofloxacin, (3) selenium, and (4) ciprofloxacin and selenium. Then, drip infusion of a bacterial suspension (Escherichia coli Z17, O2:K1; H-) into the prostatic urethra of Wistar rats was conducted to induce CBP. In 4 weeks, the results of microbiological culture of prostate and urine samples as well as histological findings of the prostate in each group were analyzed. Selenium decreased bacterial infection significantly; the decrease in infiltration rate of inflammatory cells into prostate tissues in the selenium group was similar to that in the control group. The effect of hindering bacterial infection on prostate tissue was greater in the group administered both selenium and an antibiotic than in other groups given only one of the agents. Although the findings of this study suggest that selenium can have a preventive effect against the occurrence of CBP, methods to prevent CBP are still controversial.
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Affiliation(s)
- Hyun Woo Kim
- Department of Urology, St. Paul Hospital, The Catholic University of Korea College of Medicine, Suwon, Korea
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Wu T, Xie AG, Tan SZ, Cai X. Antimicrobial effects of quaternary phosphonium salt intercalated clay minerals on Escherichia coli and Staphylococci aureus. Colloids Surf B Biointerfaces 2011; 86:232-6. [PMID: 21536418 DOI: 10.1016/j.colsurfb.2011.04.009] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2011] [Revised: 04/05/2011] [Accepted: 04/06/2011] [Indexed: 11/19/2022]
Abstract
The aim of this research was to determine the antimicrobial properties and influence factors of four clay minerals intercalated by quaternary phosphonium salt (tetradecyl tributyl phosphonium bromide, TDTB) on antimicrobial effects. Escherichia coli (E. coli) and Staphylococci aureus (S. aureus) were chosen for Minimal Inhibitory Concentration (MIC) tests to evaluate the antimicrobial activities of organ-clay minerals. The properties of organ-clay minerals were analyzed by FTIR, XRD, TEM, Z-Average and Zeta potential, and the releasing amount of TDTB into the broth was measured by ICP. The results showed that montmorillonites-TDTB inhibited the growth of E. coli and S. aureus, and the MICs were 200 ± 20 and 80 ± 15 mg/L, respectively. The amount of TDTB released into the broth was 3.42 ± 0.71%. According to the properties of organ-clay mineral, it was indicated that the antimicrobial activities of organ-clay mineral were the synergic effect of the releasing amount of TDTB, Zeta potential, particle size and distribution. The organ-clay mineral with the larger releasing amount of TDTB, the higher Zeta potential, the same particle size with bacterial size and the narrower size distribution exhibited better antimicrobial activity. The present study demonstrated the properties of organ-clay minerals effected their antimicrobial activities, provided theoretically guidance to promote the antimicrobial activity of clay minerals.
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Affiliation(s)
- Ting Wu
- Department of Bioengineering, College of Life Science and Engineering, Jinan University, Guangzhou 510632, PR China
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Composition–structure–property (Zn2+ and Ca2+ ion release) evaluation of Si–Na–Ca–Zn–Ce glasses: Potential components for nerve guidance conduits. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2011. [DOI: 10.1016/j.msec.2010.12.016] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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YANG Y, DAI G, TAN S, LIU Y, SHI Q, OUYANG Y. Structure and synergetic antibacterial effect of zinc and cerium carried sodium zirconium phosphates. J RARE EARTH 2011. [DOI: 10.1016/s1002-0721(10)60449-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kelleher SL, McCormick NH, Velasquez V, Lopez V. Zinc in specialized secretory tissues: roles in the pancreas, prostate, and mammary gland. Adv Nutr 2011; 2:101-11. [PMID: 22332039 PMCID: PMC3065755 DOI: 10.3945/an.110.000232] [Citation(s) in RCA: 186] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Zinc (Zn) is an essential micronutrient required for over 300 different cellular processes, including DNA and protein synthesis, enzyme activity, and intracellular signaling. Cellular Zn homeostasis necessitates the compartmentalization of Zn into intracellular organelles, which is tightly regulated through the integration of Zn transporting mechanisms. The pancreas, prostate, and mammary gland are secretory tissues that have unusual Zn requirements and thus must tightly regulate Zn metabolism through integrating Zn import, sequestration, and export mechanisms. Recent findings indicate that these tissues utilize Zn for basic cellular processes but also require Zn for unique cellular needs. In addition, abundant Zn is transported into the secretory pathway and a large amount is subsequently secreted in a tightly regulated manner for unique biological processes. Expression of numerous members of the SLC30A (ZnT) and SLC39A (Zip) gene families has been documented in these tissues, yet there is limited understanding of their precise functional role in Zn metabolism or their regulation. Impairments in Zn secretion from the pancreas, prostate, and mammary gland are associated with disorders such as diabetes, infertility, and cancer, respectively. In this review, we will provide a brief summary of the specific role of Zn in each tissue and describe our current knowledge regarding how Zn metabolism is regulated. Finally, in each instance, we will reflect upon how this information shapes our current understanding of the role of Zn in these secretory tissues with respect to human health and disease.
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Affiliation(s)
- Shannon L Kelleher
- Department of Nutritional Sciences, The Pennsylvania State University, University Park, PA 16802-6110, USA.
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Lee CB, Ha US, Yim SH, Lee HR, Sohn DW, Han CH, Cho YH. Does finasteride have a preventive effect on chronic bacterial prostatitis? Pilot study using an animal model. Urol Int 2011; 86:204-9. [PMID: 21273757 DOI: 10.1159/000320109] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2010] [Accepted: 08/02/2010] [Indexed: 11/19/2022]
Abstract
AIM To evaluate the preventive effect of finasteride on chronic bacterial prostatitis (CBP), Wistar rats were divided into four groups: control, ciprofloxacin, finasteride, and ciprofloxacin/finasteride. METHODS All drug pretreatments were conducted for 4 weeks, and then experimental CBP was induced by instillation of a bacterial suspension (Escherichia coli Z17 O2:K1;H-). RESULTS After 4 weeks, results of microbiological cultures of prostate and urine samples as well as histological findings of the prostate in each group were analyzed. Finasteride significantly reduced bacterial infection and decreased inflammatory cell infiltration in prostatic tissue compared with the control group. The group given both finasteride and antibiotic showed a greater inhibition of bacterial infection in the tissue than those given either finasteride or antibiotic alone. CONCLUSION Our experiments suggest the possibility that finasteride has a preventive effect on development of CBP, although there is as yet no consensus on the mechanism of this effect.
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Affiliation(s)
- Choong Bum Lee
- The Catholic University of Korea College of Medicine, Department of Urology, St Vincent Hospital, Suwon, Korea
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Kim SH, Ha US, Lee HR, Sohn DW, Lee SJ, Kim HW, Han CH, Lee CB, Cho YH. Do Escherichia coli extract and cranberry exert preventive effects on chronic bacterial prostatitis? Pilot study using an animal model. J Infect Chemother 2010; 17:322-6. [PMID: 21042827 DOI: 10.1007/s10156-010-0170-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2010] [Accepted: 09/14/2010] [Indexed: 11/25/2022]
Abstract
Traditional first-line treatment of chronic bacterial prostatitis (CBP) is administration of empirical antibiotics. However, the efficacy rate is low and long-term antibiotic therapy can result in adverse events and bacterial resistance. For these reasons, a new treatment or preventive modality that can replace traditional antibiotic therapy is required. There are several reports that E. coli extract has a preventive effect on recurrent urinary tract infection (UTI). Cranberries are also known to have beneficial effects in preventing UTI. To evaluate the preventive effect of E. coli extract and cranberries on CBP, 48 rats were randomly divided into 4 groups; control, ciprofloxacin, E. coli extract, and cranberry groups. All drug treatments were conducted for 3 weeks, and then we developed a CBP rat model. After 4 weeks, the results of microbiological culture of prostate and urine samples as well as histological findings for the prostate were analyzed for each group. The infection rate in the ciprofloxacin group was significantly lower than that in the control group. The microbiological cultures of the prostate and urine samples demonstrated reduced bacterial growth in all experimental groups compared with the control group. Histopathologic examination showed significantly decreased prostatic inflammation in all groups compared with the control group. These results suggest that E. coli extract has a potential preventive effect on the development of CBP, and cranberry also exhibits promising activity in this context.
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Affiliation(s)
- Sang Hoon Kim
- Department of Urology, St Mary's Hospital, The Catholic University of Korea College of Medicine, 62 Youido-dong, Youngdungpoku, Seoul 150-713, Korea
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Baruah S, Jaisai M, Imani R, Nazhad MM, Dutta J. Photocatalytic paper using zinc oxide nanorods. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2010; 11:055002. [PMID: 27877367 PMCID: PMC5090626 DOI: 10.1088/1468-6996/11/5/055002] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2010] [Revised: 11/29/2010] [Accepted: 09/28/2010] [Indexed: 05/27/2023]
Abstract
Zinc oxide (ZnO) nanorods were grown on a paper support prepared from soft wood pulp. The photocatalytic activity of a sheet of paper with ZnO nanorods embedded in its porous matrix has been studied. ZnO nanorods were firmly attached to cellulose fibers and the photocatalytic paper samples were reused several times with nominal decrease in efficiency. Photodegradation of up to 93% was observed for methylene blue in the presence of paper filled with ZnO nanorods upon irradiation with visible light at 963 Wm-2 for 120 min. Under similar conditions, photodegradation of approximately 35% was observed for methyl orange. Antibacterial tests revealed that the photocatalytic paper inhibits the growth of Escherichia coli under room lighting conditions.
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Affiliation(s)
- Sunandan Baruah
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Mayuree Jaisai
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Reza Imani
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
- Now at: Wood and Paper Department, Islamic Azad University, Tehran, Iran
| | - Mousa M Nazhad
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
| | - Joydeep Dutta
- Center of Excellence in Nanotechnology, School of Engineering and Technology, Asian Institute of Technology, Klong Luang, Pathumthani 12120, Thailand
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40
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Yoon BI, Ha US, Sohn DW, Lee SJ, Kim HW, Han CH, Lee CB, Cho YH. Anti-inflammatory and antimicrobial effects of nanocatechin in a chronic bacterial prostatitis rat model. J Infect Chemother 2010; 17:189-94. [PMID: 20694569 DOI: 10.1007/s10156-010-0098-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2010] [Accepted: 07/12/2010] [Indexed: 01/18/2023]
Abstract
Chronic bacterial prostatitis (CBP) is one of the most common relapsing urinary tract infection (UTI) in males. Catechin, an extract of green tea, is known to have anti-inflammatory and antimicrobial effects against various bacteria. However, catechin can be easily degenerated during digestion, and this may result in decreased absorption into the body. Nanocatechin is catechin coated with hydroxypropyl methyl cellulose by nanotechnology. It reduces degeneration during digestion and enhances absorption of catechin into the body. We evaluated the anti-inflammatory and antimicrobial effect of nanocatechin on CBP and also analyzed plasma concentration of catechins to evaluate absorptivity in an animal model. Forty rats demonstrating CBP were randomly divided into four groups: control, ciprofloxacin, catechin, and nanocatechin. After treatment, the results of microbiological culture of prostate and urine samples as well as histological findings of the prostate in each group were analyzed. Plasma concentration of catechins in catechin and nanocatechin groups was compared. The use of ciprofloxacin, catechin, and nanocatechin showed statistically significant decrease in bacterial growth and improvement in prostatic inflammation compared with the control group. The nanocatechin group showed statistically significant decrease in bacterial growth and improvement in prostatic inflammation compared with the catechin group. Plasma concentrations of epicatechin, gallocatechin gallate, and epigallocatechin gallate were significantly higher in the nanocatechin group than those in the catechin group. These results suggest that nanocatechin has better antimicrobial and anti-inflammatory effects on rat CBP than catechin due to higher absorption into the body.
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Affiliation(s)
- Byung Il Yoon
- Department of Urology, St Mary's Hospital, The Catholic University of Korea College of Medicine, 62 Youido-dong, Youngdungpoku, Seoul, 150-713, Korea
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Haase H, Rink L. Functional significance of zinc-related signaling pathways in immune cells. Annu Rev Nutr 2009; 29:133-52. [PMID: 19400701 DOI: 10.1146/annurev-nutr-080508-141119] [Citation(s) in RCA: 220] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Recent years have brought a paradigm shift for the role of the essential trace element zinc in immunity. Although its function as a structural component of many enzymes has been known for decades, current experimental evidence points to an additional function of the concentration of free or loosely bound zinc ions as an intracellular signal. The activity of virtually all immune cells is modulated by zinc in vitro and in vivo. In this review, we discuss the interactions of zinc with major signaling pathways that regulate immune cell activity, and the implications of zinc deficiency or supplementation on zinc signaling as the molecular basis for an effect of zinc on immune cell function.
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Affiliation(s)
- Hajo Haase
- Institute of Immunology, Medical Faculty, RWTH Aachen University, Aachen, Germany
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42
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Kim SI, Yim SH, Sohn DW, Lee SJ, Ha US, Han CH, Cho YH. Preventive Effect on Inflammation and Anti-Inflammatory and Anti-Microbial Effects of Garlic Extract in a Rat Model of Chronic Bacterial Prostatitis. Korean J Urol 2009. [DOI: 10.4111/kju.2009.50.6.602] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Sung In Kim
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Seung Hyuk Yim
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Dong Wan Sohn
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Seung-Ju Lee
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - U-Syn Ha
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Chang Hee Han
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
| | - Yong-Hyun Cho
- Department of Urology, The Catholic University of Korea College of Medicine, Seoul, Korea
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Scott JAG, Brooks WA, Peiris JSM, Holtzman D, Mulholland EK. Pneumonia research to reduce childhood mortality in the developing world. J Clin Invest 2008; 118:1291-300. [PMID: 18382741 DOI: 10.1172/jci33947] [Citation(s) in RCA: 113] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Pneumonia is an illness, usually caused by infection, in which the lungs become inflamed and congested, reducing oxygen exchange and leading to cough and breathlessness. It affects individuals of all ages but occurs most frequently in children and the elderly. Among children, pneumonia is the most common cause of death worldwide. Historically, in developed countries, deaths from pneumonia have been reduced by improvements in living conditions, air quality, and nutrition. In the developing world today, many deaths from pneumonia are also preventable by immunization or access to simple, effective treatments. However, as we highlight here, there are critical gaps in our understanding of the epidemiology, etiology, and pathophysiology of pneumonia that, if filled, could accelerate the control of pneumonia and reduce early childhood mortality.
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TAN SZ, ZHANG KH, ZHANG LL, XIE YS, LIU YL. Preparation and Characterization of the Antibacterial Zn2+or/and Ce3+Loaded Montmorillonites. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890160] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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45
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Synergistic effect between lycopene and ciprofloxacin on a chronic bacterial prostatitis rat model. Int J Antimicrob Agents 2008; 31 Suppl 1:S102-7. [DOI: 10.1016/j.ijantimicag.2007.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Accepted: 07/06/2007] [Indexed: 10/22/2022]
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Vykhovanets EV, Resnick MI, MacLennan GT, Gupta S. Experimental rodent models of prostatitis: limitations and potential. Prostate Cancer Prostatic Dis 2007; 10:15-29. [PMID: 17199136 DOI: 10.1038/sj.pcan.4500930] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Prostatitis is a polyetiological inflammation of the prostate gland in men characterized by pelvic pain, irritative voiding symptoms, and sexual dysfunction. Histologically prostatitis is characterized by poly- and mononuclear cell infiltrates (neutrophils, lymphocytes, macrophages and plasma cells) in the stromal connective tissue around the acini or ducts. Prostatitis is an important worldwide health problem in men. The pathogenesis and diagnostic criteria for the condition are obscure, with the result that the development of management programs for this condition has been hindered. Animal model(s) might be useful in elucidating mechanisms involved in the molecular pathogenesis of chronic nonbacterial prostatitis and chronic pelvic pain syndrome. Given that prostatitis might have a multifactorial etiology, several animal models with unique features may prove helpful. This review examines a number of experimental rodent models of prostatitis and evaluates their advantages and limitations.
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Affiliation(s)
- E V Vykhovanets
- Department of Urology, Case Western Reserve University & University Hospitals of Cleveland, Cleveland, OH 44106, USA
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Choi YS, Cho YH, Han CH. Synergistic Effect between Ginsenoside or Urovaxom® with Ciprofloxacin on Chronic Bacterial Prostatitis Rat Model. Korean J Urol 2007. [DOI: 10.4111/kju.2007.48.8.849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Yong-Sun Choi
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong-Hyun Cho
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Chang-Hee Han
- Department of Urology, College of Medicine, The Catholic University of Korea, Seoul, Korea
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Zeleňák V, Císařová I, Llewellyn P. Diversity of carboxylate coordination in two novel zinc(II) cinnamate complexes. INORG CHEM COMMUN 2007. [DOI: 10.1016/j.inoche.2006.08.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Zele[nbreve]ák V, Císařová I, Sabo M, Llewellyn P, Gyoryová K. A Zn(II)-Coordination Polymer Formed by Benzoate and 3-Pyridinemethanol Ligands: Synthesis, Spectroscopic Properties, Crystal Structure and Kinetics of Thermal Decomposition. J COORD CHEM 2006. [DOI: 10.1080/00958970410001662444] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- V. Zele[nbreve]ák
- a Department of Inorganic Chemistry , Faculty of Natural Science, Institute of Chemical Sciences, P.J. Šafárik University , Moyzesova 11, SK-041 54 Košice, Slovakia
| | - I. Císařová
- b Department of Inorganic Chemistry , Charles University , Hlavova 2030, Prague, Czech Republic
| | - M. Sabo
- a Department of Inorganic Chemistry , Faculty of Natural Science, Institute of Chemical Sciences, P.J. Šafárik University , Moyzesova 11, SK-041 54 Košice, Slovakia
| | - P. Llewellyn
- c Madirel Laboratory (UMR 6121) , Provence University and CNRS , Centre de St-Jérôme, F-13331 Marseille, France
| | - K. Gyoryová
- a Department of Inorganic Chemistry , Faculty of Natural Science, Institute of Chemical Sciences, P.J. Šafárik University , Moyzesova 11, SK-041 54 Košice, Slovakia
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50
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Yang Z, Xie C. Zn2+ release from zinc and zinc oxide particles in simulated uterine solution. Colloids Surf B Biointerfaces 2006; 47:140-5. [PMID: 16423513 DOI: 10.1016/j.colsurfb.2005.12.007] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2005] [Revised: 12/13/2005] [Accepted: 12/13/2005] [Indexed: 11/25/2022]
Abstract
Zn(2+) release from Zn and ZnO particles with different sizes in simulated uterine solution were investigated by absorbance measurements. The effects of pH and human serum albumin (HSA) on Zn(2+) release were also studied. The morphology of Zn and ZnO particles was observed by scanning electron microscopy, and the corrosion products of zinc nanoparticles were analyzed by XRD. The results indicate that the maximum release ratios of Zn(2+) from Zn and ZnO nanoparticles are higher than those from Zn and ZnO microparticles. Zn(2+) release ratio depends not only on the pH of the simulated uterine solution but also the presence of human serum albumin. It decreases as the pH of the uterine solution increases. The trends of Zn(2+) release ratios are almost the opposite for solutions with and without HSA. XRD analysis results indicate that zinc oxide is the main corrosion product of zinc particles.
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Affiliation(s)
- Zhihong Yang
- Department of Material Science and Engineering, Huazhong University of Science and Technology, Hubei, Wuhan 430074, PR China
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