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Zakzak K, Semenescu AD, Moacă EA, Predescu I, Drăghici G, Vlaia L, Vlaia V, Borcan F, Dehelean CA. Comprehensive Biosafety Profile of Carbomer-Based Hydrogel Formulations Incorporating Phosphorus Derivatives. Gels 2024; 10:477. [PMID: 39057500 PMCID: PMC11276259 DOI: 10.3390/gels10070477] [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: 06/25/2024] [Revised: 07/15/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
Determining the safety of a newly developed experimental product is a crucial condition for its medical use, especially for clinical trials. In this regard, four hydrogel-type formulations were manufactured, all of which were based on carbomer (Blank-CP940) and encapsulated with caffeine (CAF-CP940), phosphorus derivatives (phenyl phosphinic (CAF-S1-CP940) and 2-carboxyethyl phenyl phosphinic acids (CAF-S2-CP940)). The main aim of this research was to provide a comprehensive outline of the biosafety profile of the above-mentioned hydrogels. The complex in vitro screening (cell viability, cytotoxicity, morphological changes in response to exposure, and changes in nuclei morphology) on two types of healthy skin cell lines (HaCaT-human keratinocytes and JB6 Cl 41-5a-murine epidermal cells) exhibited a good biosafety profile when both cell lines were treated for 24 h with 150 μg/mL of each hydrogel. A comprehensive analysis of the hydrogel's impact on the genetic profile of HaCaT cells sustains the in vitro experiments. The biosafety profile was completed with the in vivo and in ovo assays. The outcome revealed that the developed hydrogels exerted good biocompatibility after topical application on BALB/c nude mice's skin. It also revealed a lack of toxicity after exposure to the hen's chicken embryo. Further investigations are needed, regarding the in vitro and in vivo therapeutic efficacy and safety for long-term use and potential clinical translatability.
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Affiliation(s)
- Khaled Zakzak
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (K.Z.); (L.V.)
| | - Alexandra-Denisa Semenescu
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (A.-D.S.); (I.P.); (G.D.); (C.-A.D.)
- Research Center for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania
| | - Elena-Alina Moacă
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (A.-D.S.); (I.P.); (G.D.); (C.-A.D.)
- Research Center for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania
| | - Iasmina Predescu
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (A.-D.S.); (I.P.); (G.D.); (C.-A.D.)
| | - George Drăghici
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (A.-D.S.); (I.P.); (G.D.); (C.-A.D.)
- Research Center for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania
| | - Lavinia Vlaia
- Department of Pharmaceutical Technology, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (K.Z.); (L.V.)
- Formulation and Technology of Drugs Research Center, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania;
| | - Vicenţiu Vlaia
- Formulation and Technology of Drugs Research Center, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania;
- Department of Organic Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania
| | - Florin Borcan
- Department of Analytical Chemistry, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania;
| | - Cristina-Adriana Dehelean
- Department of Toxicology, Drug Industry, Management and Legislation, Faculty of Pharmacy, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania; (A.-D.S.); (I.P.); (G.D.); (C.-A.D.)
- Research Center for Pharmaco-Toxicological Evaluation, “Victor Babes” University of Medicine and Pharmacy Timisoara, 2nd Eftimie Murgu Square, 300041 Timisoara, Romania
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Sethi M, Rana R, Sambhakar S, Chourasia MK. Nanocosmeceuticals: Trends and Recent Advancements in Self Care. AAPS PharmSciTech 2024; 25:51. [PMID: 38424412 DOI: 10.1208/s12249-024-02761-6] [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: 11/07/2023] [Accepted: 02/06/2024] [Indexed: 03/02/2024] Open
Abstract
The term cosmetics refers to any substances or products intended for external application on the skin with the aim of protection and better appearance of the skin surface. The skin delivery system promotes the controlled and targeted delivery of active ingredients. The development of this system has been driven by challenges encountered with conventional cosmeceuticals, including low skin retention of active components, limited percutaneous penetration, poor water dispersion of insoluble active ingredients, and instability of effective components. The aim is to create cosmeceuticals that can effectively overcome these issues. This review focuses on various nanocarriers used in cosmeceuticals currently and their applications in skin care, hair care, oral care, and more. The importance of nanotechnology in the sphere of research and development is growing. It provides solutions to various problems faced by conventional technologies, methods, and product formulations thus taking hold of the cosmetic industry as well. Nowadays, consumers are investing in cosmetics only for better appearance thus problems like wrinkles, ageing, hair loss, and dandruff requires to be answered proficiently. Nanocarriers not only enhance the efficacy of cosmeceutical products, providing better and longer-lasting effects, but they also contribute to the improved aesthetic appearance of the products. This dual benefit not only enhances the final quality and efficacy of the product but also increases consumer satisfaction. Additionally, nanocarriers offer protection against UV rays, further adding to the overall benefits of the cosmeceutical product. Figure 1 represents various advantages of nanocarriers used in cosmeceuticals. Nanotechnology is also gaining importance due to their high penetration of actives in the deeper layers of skin. It can be said that nanotechnology is taking over all the drawbacks of the traditional products. Thus, nanocarriers discussed in this review are used in nanotechnology to deliver the active ingredient of the cosmeceutical product to the desired site.
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Affiliation(s)
- Mitali Sethi
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Lucknow, 226031, India
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, 304022, India
| | - Rafquat Rana
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Lucknow, 226031, India
| | - Sharda Sambhakar
- Department of Pharmacy, Banasthali Vidyapith, Banasthali, Rajasthan, 304022, India
| | - Manish K Chourasia
- Division of Pharmaceutics and Pharmacokinetics, CSIR-Central Drug Research Institute, Lucknow, 226031, India.
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da Silva VAP, Abboud RDS, Contreiras EC, Boaventura GT, Chagas MA. Avocado Oil ( Persea americana) Reduces Epithelial Proliferation on Benign Prostatic Hyperplasia. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2023; 42:783-789. [PMID: 37871299 DOI: 10.1080/27697061.2023.2179552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 02/07/2023] [Indexed: 10/25/2023]
Abstract
OBJECTIVE The aim of this study is to evaluate the effect of avocado oil on the histoarchitecture of the prostate of normal rats and on rats with induced benign prostatic hyperplasia using computerized histomorphometry and immunohistochemistry. METHODS Twenty-eight Wistar rats were divided into four groups: the control group (CG), the avocado oil group (AOG) fed with avocado oil-based diet, the induced group (IG), and the avocado oil testosterone-induced group (AOIG). Prostate hyperplasia was induced by subcutaneous implantation of silicone pellets, filled with testosterone, to promote androgen stimulation. After 12 weeks, the rats were euthanized, and their prostates were removed. The material was prepared for paraffin processing and stained using hematoxylin-eosin and immunostaining for p63 nuclear antigen. RESULTS The mean epithelial thickness obtained from AOIG (19.44 ± 2.62 µm) was significantly reduced compared to that from IG (27.02 ± 4.1 µm). The average alveolar area in AOIG was 0.100 ± 0.03, which was greater than that of CG. The immunostaining for p63 in basal cells in AOIG was 17.77% ± 2.72 of the total area, a result greater than that in AOG (12.13% ± 2.04) and CG (12.01 ± 2.05). Collagen remodeling was observed with thicker fibers predominating in CG and AOG over thinner fibers in IG and AOIG. CONCLUSION The results suggest that avocado oil has a protective effect on the prostatic epithelium of Wistar rats subjected to long-term induced prostate hyperplasia.
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Affiliation(s)
- Vivian Alves Pereira da Silva
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology, Biomedic Institute, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Renato de Souza Abboud
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology, Biomedic Institute, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Ellen Cortez Contreiras
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology, Biomedic Institute, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Gilson Teles Boaventura
- Laboratory of Experimental Nutrition. Departament of Nutrition and Dietetics, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
| | - Mauricio Alves Chagas
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology, Biomedic Institute, Federal Fluminense University, Niterói, Rio de Janeiro, Brazil
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Gregg JR, Kim J, Logothetis C, Hanash S, Zhang X, Manyam G, Muir K, Giles GG, Stanford JL, Berndt SI, Kogevinas M, Brenner H, Eeles RA, Wei P, Daniel CR. Coffee Intake, Caffeine Metabolism Genotype, and Survival Among Men with Prostate Cancer. Eur Urol Oncol 2023; 6:282-288. [PMID: 35995710 PMCID: PMC9939555 DOI: 10.1016/j.euo.2022.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/26/2022] [Accepted: 07/20/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Coffee intake may lower prostate cancer risk and progression, but postdiagnosis outcomes by caffeine metabolism genotype are not well characterized. OBJECTIVE To evaluate associations between coffee intake, caffeine metabolism genotype, and survival in a large, multicenter study of men with prostate cancer. DESIGN, SETTING, AND PARTICIPANTS Data from The PRACTICAL Consortium database for 5727 men with prostate cancer from seven US, Australian, and European studies were included. The cases included had data available for the CYP1A2 -163C>A rs762551 single-nucleotide variant associated with caffeine metabolism, coffee intake, and >6 mo of follow-up. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS Multivariable-adjusted Cox proportional hazards models across pooled patient-level data were used to compare the effect of coffee intake (categorized as low [reference], high, or none/very low) in relation to overall survival (OS) and prostate cancer-specific survival (PCSS), with stratified analyses conducted by clinical disease risk and genotype. RESULTS AND LIMITATIONS High coffee intake appeared to be associated with longer PCSS (hazard ratio [HR] 0.85, 95% confidence interval [CI] 0.68-1.08; p = 0.18) and OS (HR 0.90, 95% CI 0.77-1.07; p = 0.24), although results were not statistically significant. In the group with clinically localized disease, high coffee intake was associated with longer PCSS (HR 0.66, 95% CI 0.44-0.98; p = 0.040), with comparable results for the group with advanced disease (HR 0.92, 95% CI 0.69-1.23; p = 0.6). High coffee intake was associated with longer PCSS among men with the CYP1A2 AA (HR 0.67, 95% CI 0.49-0.93; p = 0.017) but not the AC/CC genotype (p = 0.8); an interaction was detected (p = 0.042). No associations with OS were observed in subgroup analyses (p > 0.05). Limitations include the nominal statistical significance and residual confounding. CONCLUSIONS Coffee intake was associated with longer PCSS among men with a CYP1A2 -163AA (*1F/*1F) genotype, a finding that will require further replication. PATIENT SUMMARY It is likely that coffee intake is associated with longer prostate cancer-specific survival in certain groups, but more research is needed to fully understand which men may benefit and why.
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Affiliation(s)
- Justin R Gregg
- Department of Urology, Division of Surgery, University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Jeri Kim
- Merck & Co., Kenilworth, NJ, USA
| | - Christopher Logothetis
- Department of Genitourinary Medical Oncology, Division of Cancer Medicine, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sam Hanash
- Department of Clinical Cancer Prevention, Division of Cancer Prevention and Population Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Xiaotao Zhang
- Department of Epidemiology, Division of Cancer Prevention and Population Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ganiraju Manyam
- Department of Biostatistics, Division of Basic Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kenneth Muir
- Division of Population Health, Health Services Research and Primary Care, University of Manchester, Manchester, UK; Warwick Medical School, University of Warwick, Coventry, UK
| | - Graham G Giles
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Australia; Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Parkville, Australia; Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Australia
| | - Janet L Stanford
- Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA; Department of Epidemiology, School of Public Health, University of Washington, Seattle, WA, USA
| | - Sonja I Berndt
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, USA
| | - Manolis Kogevinas
- ISGlobal, Barcelona, Spain; Hospital del Mar Medical Research Institute, Barcelona, Spain; Universitat Pompeu Fabra, Barcelona, Spain; CIBER Epidemiología y Salud Pública, Madrid, Spain
| | - Hermann Brenner
- Division of Clinical Epidemiology and Aging Research, German Cancer Research Center, Heidelberg, Germany; German Cancer Consortium, German Cancer Research Center, Heidelberg, Germany; Division of Preventive Oncology, German Cancer Research Center and National Center for Tumor Diseases, Heidelberg, Germany
| | - Rosalind A Eeles
- The Institute of Cancer Research, London, UK; Royal Marsden NHS Foundation Trust, London, UK
| | - Peng Wei
- Department of Biostatistics, Division of Basic Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Carrie R Daniel
- Department of Epidemiology, Division of Cancer Prevention and Population Sciences, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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Mazzeo DEC, Dombrowski A, Oliveira FA, Levy CE, Oehlmann J, Marchi MRR. Endocrine disrupting activity in sewage sludge: Screening method, microbial succession and cost-effective strategy for detoxification. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2023; 330:117207. [PMID: 36621316 DOI: 10.1016/j.jenvman.2022.117207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 12/19/2022] [Accepted: 12/31/2022] [Indexed: 06/17/2023]
Abstract
Sewage sludge (SS) presents a high agronomic potential due to high concentrations of organic matter and nutrients, encouraging its recycling as a soil conditioner. However, the presence of toxic substances can preclude this use. To enable the safe disposal of this waste in agriculture, SS requires additional detoxification to decrease the environmental risks of this practice. Although some alternatives have been proposed in this sense, little attention is provided to eliminating endocrine-disrupting chemicals (EDCs). To fill this gap, this study aimed to develop effective and low-cost technology to eliminate EDCs from SS. For this, a detoxification process combining microorganisms and biostimulating agents (soil, sugarcane bagasse, and coffee grounds) was performed for 2, 4, and 6 months with aerobic and anaerobic SSs. The (anti-)estrogenic, (anti-)androgenic, retinoic-like, and dioxin-like activities of SSs samples were verified using yeast-based reporter-gene assays to prove the effectiveness of the treatments. A fractionation procedure of samples, dividing the target sample extract into several fractions according to their polarity, was conducted to decrease the matrix complexity and facilitate the identification of EDCs. A decrease in the abundance and microbial diversity of the SS samples was noted along the biostimulation with the predominance of filamentous fungal species over yeasts and gram-positive bacteria and non-fermenting rods over enterobacteria. Among the 9 EDCs quantified by LC-ESI-MS/MS, triclosan and alkylphenols presented the highest concentrations in both SS. Before detoxification, the studied SSs induced significant agonistic activity, especially at the human estrogen receptor α (hERα) and the human aryl hydrocarbon receptor (AhR). The raw anaerobic sludge also activated the androgen (hAR), retinoic acid (RARα), and retinoid X (RXRα) receptors. However, no significant endocrine-disrupting activities were observed after the SS detoxification, showing that the technology applied here efficiently eliminates receptor-mediated toxicity.
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Affiliation(s)
- Dânia Elisa C Mazzeo
- Department of Biotechnology and Plant and Animal Production, Center for Agricultural Sciences, Federal University of São Carlos - UFSCAR, Araras, Brazil.
| | - Andrea Dombrowski
- Department Aquatic Ecotoxicology, Goethe University Frankfurt am Main, Germany
| | - Flávio Andrade Oliveira
- Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas - UNICAMP, Rua Alexander Fleming, 105, 13081-970, Campinas, SP, Brazil
| | - Carlos Emílio Levy
- Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas - UNICAMP, Rua Alexander Fleming, 105, 13081-970, Campinas, SP, Brazil
| | - Jörg Oehlmann
- Department Aquatic Ecotoxicology, Goethe University Frankfurt am Main, Germany
| | - Mary Rosa R Marchi
- Department of Analytical Chemistry, Institute of Chemistry, UNESP - Univ Estadual Paulista, Araraquara, SP, Brazil
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Electrospun wound dressing as a promising tool for the therapeutic delivery of ascorbic acid and caffeine. Ther Deliv 2019; 10:757-767. [PMID: 31840563 DOI: 10.4155/tde-2019-0059] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim: The aim of this work is to formulate a wound dressing for the delivery of ascorbic acid and caffeine. Method: A wound dressing was developed from electrospun nanofiber containing ascorbic acid and caffeine. In vitro drug release was performed at 25°C and 32°C. Wound healing activity of the nanofiber mats was tested in vivo using rat model with skin excision. Antifungal activity of the dressing was tested on Candida albicans using the disc diffusion method. Results & conclusion: Zone of inhibition was 6.7 mm for caffeine dressing; however, inhibition zone increased to 16.7 mm for samples containing both caffeine and ascorbic acid. Animals treated with ascorbic acid showed collagen deposition and very few fibroblast cells. Blood vessels and fibroblasts were increased in caffeine-loaded dressings compared with the ascorbic acid group. The findings of the present work suggest the benefits of topical ascorbic acid and caffeine for its high wound healing effects.
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Arnold MR, Williams PH, McArthur JA, Archuleta AR, O'Neill CE, Hassell JE, Smith DG, Bachtell RK, Lowry CA. Effects of chronic caffeine exposure during adolescence and subsequent acute caffeine challenge during adulthood on rat brain serotonergic systems. Neuropharmacology 2019; 148:257-271. [PMID: 30579884 PMCID: PMC6438184 DOI: 10.1016/j.neuropharm.2018.12.019] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/13/2018] [Accepted: 12/15/2018] [Indexed: 01/09/2023]
Abstract
Caffeine is the most commonly used drug in the world. However, animal studies suggest that chronic consumption of caffeine during adolescence can result in enhanced anxiety-like behavioral responses during adulthood. One mechanism through which chronic caffeine administration may influence subsequent anxiety-like responses is through actions on brainstem serotonergic systems. In order to explore potential effects of chronic caffeine consumption on brainstem serotonergic systems, we evaluated the effects of a 28-day exposure to chronic caffeine (0.3 g/L; postnatal day 28-56) or vehicle administration in the drinking water, followed by 24 h caffeine withdrawal, and subsequent challenge with caffeine (30 mg/kg; s.c.) or vehicle in adolescent male rats. In Experiment 1, acute caffeine challenge induced a widespread activation of serotonergic neurons throughout the dorsal raphe nucleus (DR); this effect was attenuated in rats that had been exposed to chronic caffeine consumption. In Experiment 2, acute caffeine administration profoundly decreased tph2 and slc22a3 mRNA expression throughout the DR, with no effects on htr1a or slc6a4 mRNA expression. Chronic caffeine exposure for four weeks during adolescence was sufficient to decrease tph2 mRNA expression in the DR measured 28 h after caffeine withdrawal. Chronic caffeine administration during adolescence did not impact the ability of acute caffeine to decrease tph2 or slc22a3 mRNA expression. Together, these data suggest that both chronic caffeine administration during adolescence and acute caffeine challenge during adulthood are important determinants of serotonergic function and serotonergic gene expression, effects that may contribute to chronic effects of caffeine on anxiety-like responses.
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Affiliation(s)
- M R Arnold
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, 80309, USA; Center for Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - P H Williams
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - J A McArthur
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - A R Archuleta
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA; Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - C E O'Neill
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA; Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - J E Hassell
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - D G Smith
- Department of Chemistry and Biochemistry, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - R K Bachtell
- Center for Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA; Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA.
| | - C A Lowry
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, CO, 80309, USA; Center for Neuroscience, University of Colorado Boulder, Boulder, CO, 80309, USA; Department of Physical Medicine & Rehabilitation and Center for Neuroscience, University of Colorado Anschutz Medical Campus, Aurora, CO, 80045, USA; Veterans Health Administration, Rocky Mountain Mental Illness Research Education and Clinical Center, Denver Veterans Affairs Medical Center (VAMC), Denver, CO, 80220, USA; Military and Veteran Microbiome Consortium for Research and Education (MVM-CoRE), Denver, CO, 80220, USA.
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Gregg JR, Lopez DS, Reichard C, Zheng J, Wu W, Ye Y, Chapin B, Kim J, Daniel CR, Davis J. Coffee, Caffeine Metabolism Genotype and Disease Progression in Patients with Localized Prostate Cancer Managed with Active Surveillance. J Urol 2019; 201:308-314. [PMID: 30179617 PMCID: PMC9798525 DOI: 10.1016/j.juro.2018.08.048] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
PURPOSE Active surveillance is increasingly used as a management strategy for localized prostate cancer. Coffee intake has been associated with a lower prostate cancer incidence. We assessed whether coffee was associated with disease progression in men on active surveillance. MATERIALS AND METHODS A total of 411 patients with newly diagnosed Gleason score 6 or 7 prostate cancer were enrolled on a prospective active surveillance protocol for at least 6 months and completed a baseline dietary assessment. The active surveillance protocol included a biennial monitoring regimen with disease progression defined as an increase in the Gleason score. Cox proportional hazards models were used to evaluate associations of coffee intake with progression-free survival. We also evaluated patient genotype in the caffeine metabolism related single nucleotide polymorphism rs762551. RESULTS Median followup was 36 months (range 6 to 126) and the Gleason score progressed in 76 of the 411 patients (18.5%). Compared to 0 cups per day, in the multivariable model adjusting for prostate specific antigen, patient age and tumor length, less than 1 cup (HR 0.85, 95% CI 0.40-1.71), 1 to 1.9 cups (HR 0.64, 95% CI 0.29-1.43), 2 to 3.9 cups (HR 0.71, 95% CI 0.35-1.47) and 4 cups or more (HR 1.67, 95% CI 0.81-3.45) were not significantly associated with progression-free survival (p for nonlinearity = 0.01). Patients with low/moderate coffee intake and the AA fast caffeine metabolizer genotype were less likely to experience grade progression than nonconsumers (HR 0.36, 95% CI 0.15-0.88, p = 0.03). CONCLUSIONS Low to moderate coffee intake appears safe in men on active surveillance of localized prostate cancer. Further work is needed to determine whether high consumption is associated with shorter progression-free survival in sensitive groups.
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Affiliation(s)
| | | | | | - Jiali Zheng
- University of Texas MD Anderson Cancer Center
| | - Wenhui Wu
- University of Texas MD Anderson Cancer Center
| | - Yuanqing Ye
- University of Texas MD Anderson Cancer Center
| | | | - Jeri Kim
- University of Texas MD Anderson Cancer Center
| | | | - John Davis
- University of Texas MD Anderson Cancer Center
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Sadgrove NJ. The new paradigm for androgenetic alopecia and plant-based folk remedies: 5α-reductase inhibition, reversal of secondary microinflammation and improving insulin resistance. JOURNAL OF ETHNOPHARMACOLOGY 2018; 227:206-236. [PMID: 30195058 DOI: 10.1016/j.jep.2018.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 08/05/2018] [Accepted: 09/04/2018] [Indexed: 05/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Research in the past half a century has gradually sketched the biological mechanism leading to androgenetic alopecia (AGA). Until recently the aetiological paradigm has been too limited to enable intelligent commentary on the use of folk remedies to treat or reduce the expression of this condition. However, our understanding is now at a point where we can describe how some folk remedies work, predict how effective they will be or why they fail. RESULTS The new paradigm of AGA is that inheritance and androgens (dihydrotestosterone) are the primary contributors and a secondary pathology, microinflammation, reinforces the process at more advanced stages of follicular miniaturisation. The main protagonist to microinflammation is believed to be microbial or Demodex over-colonisation of the infundibulum of the pilosebaceous unit, which can be ameliorated by antimicrobial/acaricidal or anti-inflammatory therapies that are used as adjuvants to androgen dependent treatments (either synthetic or natural). Furthermore, studies reveal that suboptimal androgen metabolism occurs in both AGA and insulin resistance (low SHBG or high DHT), suggesting comorbidity. Both can be ameliorated by dietary phytochemicals, such as specific classes of phenols (isoflavones, phenolic methoxy abietanes, hydroxylated anthraquinones) or polycyclic triterpenes (sterols, lupanes), by dual inhibition of key enzymes in AGA (5α-reductase) and insulin resistance (ie., DPP-4 or PTP1B) or agonism of nuclear receptors (PPARγ). Evidence strongly indicates that some plant-based folk remedies can ameliorate both primary and secondary aetiological factors in AGA and improve insulin resistance, or act merely as successful adjuvants to mainstream androgen dependent therapies. CONCLUSION Thus, if AGA is viewed as an outcome of primary and secondary factors, then it is better that a 'multimodal' or 'umbrella' approach, to achieve cessation and/or reversal, is put into practice, using complementation of chemical species (isoflavones, anthraquinones, procyanidins, triterpenes, saponins and hydrogen sulphide prodrugs), thereby targeting multiple 'factors'.
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Karaismailoglu S, Tuncer M, Bayrak S, Erdogan G, Ergun EL, Erdem A. The perinatal effects of maternal caffeine intake on fetal and neonatal brain levels of testosterone, estradiol, and dihydrotestosterone in rats. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2017; 390:827-838. [DOI: 10.1007/s00210-017-1383-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 05/17/2017] [Indexed: 11/29/2022]
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Bae J, Choi H, Choi Y, Roh J. Dose- and time-related effects of caffeine on the testis in immature male rats. Exp Anim 2016; 66:29-39. [PMID: 27665862 PMCID: PMC5300999 DOI: 10.1538/expanim.16-0060] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
We previously showed that prepubertal chronic caffeine exposure adversely affected the
development of the testes in male rats. Here we investigated dose- and time-related
effects of caffeine consumption on the testis throughout sexual maturation in prepubertal
rats. A total of 80 male SD rats were randomly divided into four groups: controls and rats
fed 20, 60, or 120 mg caffeine/kg/day, respectively, via gavage for 10, 20, 30, or 40
days. Preputial separation was monitored daily before the rats were sacrificed. Terminal
blood samples were collected for hormone assay, and testes were grossly evaluated and
weighed. One testis was processed for histological analysis, and the other was collected
to isolate Leydig cells. Caffeine exposure significantly increased the relative weight of
the testis in a dose-related manner after 30 days of exposure, whereas the absolute testis
weight tended to decrease at the 120 mg dose of caffeine. The mean diameter of the
seminiferous tubules and height of the germinal epithelium significantly decreased in the
caffeine-fed groups after 40 days of caffeine exposure, which was accompanied by a reduced
BrdU incorporation rate in germ cells. In addition, caffeine intake significantly reduced
in vivo and ex vivo testosterone production in a
dose-related manner. Our results demonstrate that caffeine exposure during sexual
maturation alter the testicular microarchitecture and also slow germ cell proliferation
even at the 20 mg dose level. Furthermore, caffeine may act directly on Leydig cells and
interfere with testosterone production in a dose-related manner, consequently delaying
onset of sexual maturation.
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Affiliation(s)
- Jaeman Bae
- Department of Obstetrics and Gynecology, College of Medicine, Hanyang University, Seoul, South Korea
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de Amorim Ribeiro IC, da Costa CAS, da Silva VAP, Côrrea LBNS, Boaventura GT, Chagas MA. Flaxseed reduces epithelial proliferation but does not affect basal cells in induced benign prostatic hyperplasia in rats. Eur J Nutr 2016; 56:1201-1210. [PMID: 26857761 DOI: 10.1007/s00394-016-1169-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 01/29/2016] [Indexed: 02/04/2023]
Abstract
PURPOSE This study aimed to quantitatively and qualitatively evaluate the effects of a flaxseed-based diet on the histoarchitecture of the prostate of normal Wistar rats and of rats with induced BPH. METHODS The study included four experimental groups of ten animals each: casein control group (CCG), who were fed a casein-based diet; flaxseed control group (FCG), who were fed a flaxseed-based diet; hyperplasia-induced casein group (HICG), who were fed a casein-based diet; and hyperplasia-induced flaxseed group (HIFG), who were fed a flaxseed-based diet. Hyperplasia was induced by the subcutaneous implantation of silicone pellets containing testosterone propionate. After 20 weeks, the rats were euthanized and their prostate fixed in buffered formalin. Tissue sections were stained with HE, picrosirius red and immunostained for nuclear antigen p63. Histomorphometric analysis evaluated the epithelial thickness, epithelial area, individual luminal area, and total area of prostatic alveoli. RESULTS The mean epithelial thickness obtained for HIFG and HICG was 16.52 ± 1.65 and 20.58 ± 2.86 µm, respectively. The mean epithelial thickness in HICG was greater than that in the other groups tested. HIFG had a smaller epithelial thickness and lower percentage of papillary projections in the prostatic alveoli. No significant difference was observed between CCG and FCG. The total area and mean alveolar area showed no significant differences between the groups. The number of cells immunostained for p63 was not significantly different between the groups evaluated. CONCLUSION These results suggest that flaxseed has a protective effect on the prostate epithelium in BPH-induced animals.
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Affiliation(s)
- Ilma Cely de Amorim Ribeiro
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology Biomedic Institute, Federal Fluminense University, Rua Hernani Melo, 101, São Domingos, Niterói, Rio de Janeiro, RJ, 24210-130, Brazil
| | - Carlos Alberto Soares da Costa
- Department of Nutrition and Dietetics, Experimental Nutrition Laboratory, College of Nutrition, Federal Fluminense University, 30/5th floor, Rio de Janeiro, 24020-140, Brazil
| | - Vivian Alves Pereira da Silva
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology Biomedic Institute, Federal Fluminense University, Rua Hernani Melo, 101, São Domingos, Niterói, Rio de Janeiro, RJ, 24210-130, Brazil
| | - Lanna Beatriz Neves Silva Côrrea
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology Biomedic Institute, Federal Fluminense University, Rua Hernani Melo, 101, São Domingos, Niterói, Rio de Janeiro, RJ, 24210-130, Brazil
| | - Gilson Teles Boaventura
- Department of Nutrition and Dietetics, Experimental Nutrition Laboratory, College of Nutrition, Federal Fluminense University, 30/5th floor, Rio de Janeiro, 24020-140, Brazil
| | - Mauricio Alves Chagas
- Department of Morphology, Laboratory of Cellular and Extracellular Biomorphology Biomedic Institute, Federal Fluminense University, Rua Hernani Melo, 101, São Domingos, Niterói, Rio de Janeiro, RJ, 24210-130, Brazil.
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Choi YY, Choi Y, Kim J, Choi H, Shin J, Roh J. Peripubertal Caffeine Exposure Impairs Longitudinal Bone Growth in Immature Male Rats in a Dose- and Time-Dependent Manner. J Med Food 2016; 19:73-84. [DOI: 10.1089/jmf.2015.3467] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Yun-Young Choi
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Yuri Choi
- Laboratory of Reproductive Endocrinology, Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Jisook Kim
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea
| | - Hyeonhae Choi
- Laboratory of Reproductive Endocrinology, Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Jiwon Shin
- Laboratory of Reproductive Endocrinology, Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Jaesook Roh
- Laboratory of Reproductive Endocrinology, Department of Anatomy and Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
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Reis AMS, Ocarino NDM, Boeloni JN, Gomes DA, Goes AM, Ferreira ADF, Serakides R. Inhibition of the osteogenic differentiation of mesenchymal stem cells derived from the offspring of rats treated with caffeine during pregnancy and lactation. Connect Tissue Res 2015; 57:131-42. [PMID: 26634797 DOI: 10.3109/03008207.2015.1117075] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Caffeine is an alkaloid that is widely consumed due to its presence in drugs, coffee, tea, and chocolate. This compound passes to offspring through the placenta and milk; can cause teratogenic mutations; and reduces the formation, growth, and mass of bone. Because mesenchymal stem cells (MSCs) are responsible for generating the entire skeleton, we hypothesized that these cells are targets of caffeine. This study evaluated the osteogenic differentiation of MSCs derived from the offspring of rats treated with caffeine during pregnancy and lactation. Twenty-four adult Wistar rats were randomly divided into four groups, including one control group and three experimental groups treated with 25, 50, or 100 mg/kg of caffeine. At weaning, three 21-day-old pups from each dam in each group were euthanized for extraction of bone marrow cells for in vitro tests. Caffeine doses of 50 and 100 mg/kg significantly reduced the activity of alkaline phosphatase at 7, 14, and 21 days and the expression of collagen I at 21 days. However, the expression of gene transcripts for alkaline phosphatase, Runx-2, and bone sialoprotein, as well as the synthesis of mineralization nodules, decreased significantly in all groups treated with caffeine. The expression of osteocalcin was significantly reduced only in the group treated with 50 mg/kg caffeine. The caffeine that passes from the mother to the offspring during pregnancy and lactation reduces the osteogenic differentiation of MSCs. We propose that this reduction in the osteogenic potential of MSCs may be involved in the pathogenesis of osteopenia resulting from caffeine consumption.
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Affiliation(s)
- Amanda Maria Sena Reis
- a Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) do Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária , Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Natália de Melo Ocarino
- a Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) do Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária , Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Jankerle Neves Boeloni
- a Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) do Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária , Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Dawidson Assis Gomes
- b Laboratório de Imunologia Celular e Biologia Molecular do Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Alfredo Miranda Goes
- b Laboratório de Imunologia Celular e Biologia Molecular do Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Andrea da Fonseca Ferreira
- b Laboratório de Imunologia Celular e Biologia Molecular do Departamento de Bioquímica e Imunologia , Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
| | - Rogéria Serakides
- a Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) do Departamento de Clínica e Cirurgia Veterinária, Escola de Veterinária , Universidade Federal de Minas Gerais , Belo Horizonte , Minas Gerais , Brazil
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Bonyanian Z, Rose'Meyer RB. Caffeine and its Potential Role in Attenuating Impaired Wound Healing in Diabetes. JOURNAL OF CAFFEINE RESEARCH 2015. [DOI: 10.1089/jcr.2015.0011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Zeinab Bonyanian
- School of Medical Sciences, Griffith University, Gold Coast, Australia
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Shin J, Choi Y, Kim J, Yu AR, Shin JS, Choi YY, Roh J. High doses of caffeine reduce in vivo osteogenic activity in prepubertal rats. J Anat 2015; 227:10-20. [PMID: 26041429 DOI: 10.1111/joa.12332] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/23/2015] [Indexed: 11/27/2022] Open
Abstract
Caffeine adversely affects endochondral ossification during fetal skeletal growth, and results in increased incidence of delayed and abnormal fetal skeletal development. Chronic caffeine intake also decreases growth hormone secretion. Thus, it is conceivable that caffeine may disrupt bone growth during the peripubertal period. This study aimed to investigate the impact of high-caffeine consumption on bone growth throughout puberty. A total of 51 male rats (21 days old) were divided randomly into three groups: a control group and two groups fed caffeine via gavage with 120 and 180 mg kg(-1) day(-1) for 4 weeks. After death, the final length and weight of leg bones were measured, and the tibia processed for histomorphometric analysis. Caffeine caused a significant decrease in body mass gain. This was accompanied with proportional decreases in lean body mass and body fat. In addition, bone mass and osteogenic activity in vivo were assessed using dual-energy X-ray absorptiometry and (18) F-NaF positron emission tomography. The results showed significant decreases of bone mass and in vivo osteogenic activity in the caffeine-fed groups. Rats fed with caffeine showed a significantly shorter and lighter tibia and femur and the vertebral column compared with controls. In addition, caffeine does not increase the width of the growth plates (GPs), it slows the rate at which the GP closes due to a slower rate of growth. These results demonstrated that caffeine altered osteogenic activity, leading to delayed peripubertal longitudinal bone growth and maturation. Given that osteogenic cells undergo dynamic changes in metabolic activity and that the pubertal growth spurt is mainly stimulated by growth hormone/insulin-like growth factor-1 and sex steroids during pubertal development, caffeine could suppress ossification by interfering with both physiological changes in hormonal secretion and osteogenic activity during this critical period. Further study will be needed to investigate the cellular/molecular mechanism by which caffeine affects osteogenesis using in vitro experimental models.
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Affiliation(s)
- Jiwon Shin
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Yuri Choi
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Jisook Kim
- Department of Pathology, College of Medicine, Hanyang University, Seoul, Korea
| | - A-Ram Yu
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Ji-Soo Shin
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
| | - Yun-Young Choi
- Department of Nuclear Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Jaesook Roh
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul, Korea
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Reis AMS, Ribeiro LGR, Ocarino NDM, Goes AM, Serakides R. Osteogenic potential of osteoblasts from neonatal rats born to mothers treated with caffeine throughout pregnancy. BMC Musculoskelet Disord 2015; 16:10. [PMID: 25649420 PMCID: PMC4324429 DOI: 10.1186/s12891-015-0467-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 01/15/2015] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Caffeine is an active alkaloid that can cause damage to bones in formation during prenatal life into adulthood. This compound can pass across the placenta and into the mother's milk, causing a reduction in bone formation, growth and mass. The objective of this study was to examine the osteogenic potential of osteoblasts extracted from neonatal rats born to mothers treated with caffeine throughout pregnancy. METHODS Twenty-four adult Wistar rats were randomly divided into four groups, consisting of one control group and three groups that were treated with 25, 50, or 100 mg/kg of caffeine by an oral-gastric probe throughout the duration of the experimental period (pregnancy). At birth, three puppies from each dam in each group were euthanized, and osteoblasts were extracted from the calvaria of these pups for in vitro testing. RESULTS The osteoblasts extracted from the pups of rats that received 50 mg/kg caffeine during pregnancy exhibited increased expression of osteocalcin, osteopontin, sialoprotein, runx-2, alkaline phosphatase and type I collagen transcripts, resulting in increased synthesis of mineralization nodules. CONCLUSIONS Neonates from rats treated with 50 mg/kg caffeine during pregnancy contained osteoblasts with a higher osteogenic potential characterized by increased expression of osteocalcin, osteopontin, sialoprotein, runx-2, alkaline phosphatase and type I collagen and increased synthesis of mineralization nodules.
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Affiliation(s)
- Amanda Maria Sena Reis
- Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Caixa Postal 567, campus Pampulha da UFMG, CEP 30123-970, Belo Horizonte, MG, Brazil.
| | - Lorena Gabriela Rocha Ribeiro
- Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Caixa Postal 567, campus Pampulha da UFMG, CEP 30123-970, Belo Horizonte, MG, Brazil.
| | - Natália de Melo Ocarino
- Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Caixa Postal 567, campus Pampulha da UFMG, CEP 30123-970, Belo Horizonte, MG, Brazil.
| | - Alfredo Miranda Goes
- Laboratório de Imunologia Celular e Biologia Molecular do Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Presidente Antônio Carlos, 6627, CEP: 30.161-970, Belo Horizonte, Minas Gerais, Brazil.
| | - Rogéria Serakides
- Núcleo de Células Tronco e Terapia Celular Animal (NCT-TCA) da Escola de Veterinária da Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627, Caixa Postal 567, campus Pampulha da UFMG, CEP 30123-970, Belo Horizonte, MG, Brazil.
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Park M, Choi Y, Choi H, Yim JY, Roh J. High Doses of Caffeine during the Peripubertal Period in the Rat Impair the Growth and Function of the Testis. Int J Endocrinol 2015; 2015:368475. [PMID: 25983753 PMCID: PMC4423020 DOI: 10.1155/2015/368475] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/06/2015] [Indexed: 11/18/2022] Open
Abstract
Prenatal caffeine exposure adversely affects the development of the reproductive organs of male rat offspring. Thus, it is conceivable that peripubertal caffeine exposure would also influence physiologic gonadal changes and function during this critical period for sexual maturation. This study investigated the impact of high doses of caffeine on the testes of prepubertal male rats. A total of 45 immature male rats were divided randomly into three groups: a control group and 2 groups fed 120 and 180 mg/kg/day of caffeine, respectively, via the stomach for 4 weeks. Caffeine caused a significant decrease in body weight gain, accompanied by proportional decreases in lean body mass and body fat. The caffeine-fed animals had smaller and lighter testes than those of the control that were accompanied by negative influences on the histologic parameters of the testes. In addition, stimulated-testosterone ex vivo production was reduced in Leydig cells retrieved from the caffeine-fed animals. Our results demonstrate that peripubertal caffeine consumption can interfere with the maturation and function of the testis, possibly by interrupting endogenous testosterone secretion and reducing the sensitivity of Leydig cells to gonadotrophic stimulation. In addition, we confirmed that pubertal administration of caffeine reduced testis growth and altered testis histomorphology.
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Affiliation(s)
- Minji Park
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 133-791, Republic of Korea
| | - Yuri Choi
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 133-791, Republic of Korea
| | - Hyeonhae Choi
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 133-791, Republic of Korea
| | - Ju-Yearn Yim
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 133-791, Republic of Korea
| | - Jaesook Roh
- Laboratory of Reproductive Endocrinology, Department of Anatomy & Cell Biology, College of Medicine, Hanyang University, Seoul 133-791, Republic of Korea
- *Jaesook Roh:
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Ojeh N, Stojadinovic O, Pastar I, Sawaya A, Yin N, Tomic-Canic M. The effects of caffeine on wound healing. Int Wound J 2014; 13:605-13. [PMID: 25041108 DOI: 10.1111/iwj.12327] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 05/17/2014] [Accepted: 06/05/2014] [Indexed: 11/26/2022] Open
Abstract
The purine alkaloid caffeine is a major component of many beverages such as coffee and tea. Caffeine and its metabolites theobromine and xanthine have been shown to have antioxidant properties. Caffeine can also act as adenosine-receptor antagonist. Although it has been shown that adenosine and antioxidants promote wound healing, the effect of caffeine on wound healing is currently unknown. To investigate the effects of caffeine on processes involved in epithelialisation, we used primary human keratinocytes, HaCaT cell line and ex vivo model of human skin. First, we tested the effects of caffeine on cell proliferation, differentiation, adhesion and migration, processes essential for normal wound epithelialisation and closure. We used 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) proliferation assay to test the effects of seven different caffeine doses ranging from 0·1 to 5 mM. We found that caffeine restricted cell proliferation of keratinocytes in a dose-dependent manner. Furthermore, scratch wound assays performed on keratinocyte monolayers indicated dose-dependent delays in cell migration. Interestingly, adhesion and differentiation remained unaffected in monolayer cultures treated with various doses of caffeine. Using a human ex vivo wound healing model, we tested topical application of caffeine and found that it impedes epithelialisation, confirming in vitro data. We conclude that caffeine, which is known to have antioxidant properties, impedes keratinocyte proliferation and migration, suggesting that it may have an inhibitory effect on wound healing and epithelialisation. Therefore, our findings are more in support of a role for caffeine as adenosine-receptor antagonist that would negate the effect of adenosine in promoting wound healing.
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Affiliation(s)
- Nkemcho Ojeh
- Faculty of Medical Sciences, The University of the West Indies, St. Michael, Barbados.
| | - Olivera Stojadinovic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Irena Pastar
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Andrew Sawaya
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Natalie Yin
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami, Miller School of Medicine, Miami, FL, USA
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Guo Y, Niu K, Okazaki T, Wu H, Yoshikawa T, Ohrui T, Furukawa K, Ichinose M, Yanai K, Arai H, Huang G, Nagatomi R. Coffee treatment prevents the progression of sarcopenia in aged mice in vivo and in vitro. Exp Gerontol 2014; 50:1-8. [DOI: 10.1016/j.exger.2013.11.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2013] [Revised: 11/08/2013] [Accepted: 11/15/2013] [Indexed: 12/25/2022]
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Sanches LD, Santos SAA, Carvalho JR, Jeronimo GDM, Favaro WJ, Reis MDG, Felisbino SL, Justulin LA. Protective effect of γ-tocopherol-enriched diet on N-methyl-N-nitrosourea-induced epithelial dysplasia in rat ventral prostate. Int J Exp Pathol 2013; 94:362-72. [PMID: 24205794 DOI: 10.1111/iep.12042] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2013] [Revised: 06/14/2013] [Accepted: 07/02/2013] [Indexed: 12/19/2022] Open
Abstract
Despite recent advances in understanding the biological basis of prostate cancer (PCa), the management of this disease remains a challenge. Chemoprotective agents have been used to protect against or eradicate prostate malignancies. Here, we investigated the protective effect of γ-tocopherol on N-methyl-N-nitrosourea (MNU)-induced epithelial dysplasia in the rat ventral prostate (VP). Thirty-two male Wistar rats were divided into four groups (n = 8): control (CT): healthy control animals fed a standard diet; control+γ-tocopherol (CT+γT): healthy control animals without intervention fed a γ-tocopherol-enriched diet (20 mg/kg); N-methyl-N-nitrosourea (MNU): rats that received a single dose of MNU (30 mg/kg) plus testosterone propionate (100 mg/kg) and were fed a standard diet; and MNU+γ-tocopherol (MNU+γT): rats that received the same treatment of MNU plus testosterone and were fed with a γ-tocopherol-enriched diet (20 mg/kg). After 4 months, the VPs were excised to evaluate morphology, cell proliferation and apoptosis, as well as cyclooxygenase-2 (Cox-2), glutathione-S-transferase-pi (GST-pi) and androgen receptor (AR) protein expression, and matrix metalloproteinase-9 (MMP-9) activity. An increase in the incidence of epithelial dysplasias, such as stratified epithelial hyperplasia and squamous metaplasia, in the MNU group was accompanied by augmented cell proliferation, GST-pi and Cox-2 immunoexpression and pro-MMP-9 activity. Stromal thickening and inflammatory foci were also observed. The administration of a γ-tocopherol-enriched diet significantly attenuated the adverse effects of MNU in the VP. The incidence of epithelial dysplasia decreased, along with the cell proliferation index, GST-pi and Cox-2 immunoexpression. The gelatinolytic activity of pro-MMP-9 returned to the levels observed for the CT group. These results suggest that γ-tocopherol acts as a protective agent against MNU-induced prostatic disorders in the rat ventral prostate.
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Affiliation(s)
- Lucas D Sanches
- Department of Structural Biology, Institute of Biological and Natural Sciences, Federal University of Triangulo Mineiro, Uberaba, MG, Brazil
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Selected Literature Watch. JOURNAL OF CAFFEINE RESEARCH 2012. [DOI: 10.1089/jcr.2013.1225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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