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Kirlioglu Balcioglu SS, Kurt Sabitay I, Uysal A, Yildirim Servi E, Yaman M, Mizrak OF, Ozturk N, Isiksacan N, Guclu O. Evaluation of changes in carbonyl stress markers with treatment in male patients with bipolar disorder manic episode: A controlled study. J Affect Disord 2024; 362:1-8. [PMID: 38944288 DOI: 10.1016/j.jad.2024.06.112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Revised: 05/26/2024] [Accepted: 06/26/2024] [Indexed: 07/01/2024]
Abstract
BACKGROUND Carbonyl stress, a metabolic state characterized by elevated production of reactive carbonyl compounds (RCCs), is closely related to oxidative stress and has been implicated in various diseases. This study aims to investigate carbonyl stress parameters in drug-free bipolar disorder (BD) patients compared to healthy controls, explore their relationship with clinical features, and assess the effect of treatment on these parameters. METHODS Patients with a primary diagnosis of a manic episode of BD and healthy controls were recruited. Exclusion criteria included intellectual disability, presence of neurological diseases, chronic medical conditions such as diabetes mellitus and metabolic syndrome, and clinical signs of inflammation. Levels of serum carbonyl stress parameters were determined using high-performance liquid chromatography. RESULTS Levels of glyoxal (GO) and methylglyoxal (MGO) did not differ between pre- and post-treatment patients, but malondialdehyde (MDA) levels decreased significantly post-treatment. Pre-treatment MGO and MDA levels were higher in patients compared to controls, and these differences persisted post-treatment. After adjusting for BMI and waist circumference, only MDA levels remained significantly higher in patients compared to controls. LIMITATIONS The study's limitations include the exclusion of female patients, which precluded any assessment of potential gender differences, and the lack of analysis of the effect of specific mood stabilizers or antipsychotic drugs. CONCLUSIONS This study is the first to focus on carbonyl stress markers in BD, specifically GO, MGO, and MDA. MDA levels remained significantly higher in patients, suggesting a potential role in BD pathophysiology. MGO levels were influenced by metabolic parameters, indicating a potential link to neurotoxicity in BD. Further research with larger cohorts is needed to better understand the role of RCCs in BD and their potential as therapeutic targets.
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Affiliation(s)
- Simge Seren Kirlioglu Balcioglu
- Department of Psychiatry, Basaksehir Cam and Sakura City Hospital, University of Health Sciences, Istanbul, Turkiye; Hamidiye Institute of Health Sciences, University of Health Sciences, Istanbul, Turkiye.
| | - Imren Kurt Sabitay
- Department of Psychiatry, Basaksehir Cam and Sakura City Hospital, University of Health Sciences, Istanbul, Turkiye
| | - Aybegum Uysal
- Department of Psychiatry, Basaksehir Cam and Sakura City Hospital, University of Health Sciences, Istanbul, Turkiye
| | - Esra Yildirim Servi
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkiye
| | - Mustafa Yaman
- Department of Molecular Biology and Genetics, Faculty of Engineering and Natural Sciences, Istanbul Sabahattin Zaim University, Istanbul, Turkiye
| | - Omer Faruk Mizrak
- Sabri Ulker Food and Nutrition Center, Istanbul Sabahattin Zaim University, Istanbul, Turkiye
| | | | - Nilgun Isiksacan
- Hamidiye Institute of Health Sciences, University of Health Sciences, Istanbul, Turkiye; Department of Biochemistry, Dr Sadi Konuk Training and Research Hospital, Istanbul, Turkiye
| | - Oya Guclu
- Department of Psychiatry, Basaksehir Cam and Sakura City Hospital, University of Health Sciences, Istanbul, Turkiye
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Pandey PP, Kumar MS. Exploring the therapeutic potential of steroidal alkaloids in managing Alzheimer's disease. Steroids 2024; 209:109468. [PMID: 38959993 DOI: 10.1016/j.steroids.2024.109468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 06/21/2024] [Accepted: 06/30/2024] [Indexed: 07/05/2024]
Abstract
Steroidal alkaloids are secondary metabolites that are often found in plants, fungi and sponges. These compounds are considered as a source of bioactive compounds for the treatment of chronic diseases, such as neurological disorder like Alzheimer's disease (AD). Some examples of alkaloid derivatives currently used to treat AD symptoms include galantamine, huperzine A, and other alkaloids. AD is a multifactorial disease caused by multiple factors such as inflammation, oxidative stress, and protein aggregation. Based on the various important neuroprotective activities and different pharmacological effects of steroidal alkaloids with polypharmacological modulatory effects, they can lead to the development of new drugs for the treatment of AD. There are limited studies on the involvement of steroidal alkaloids in AD. Therefore, the mechanisms and neuroprotective abilities of these compounds are still poorly understood. The purpose of this review article is to provide an overview of the mechanism, toxicity and neuroprotective benefits of steroidal alkaloids and to discuss future possibilities to improve the application of steroidal alkaloids as anti-AD agents. The therapeutic value and limitations of the steroidal alkaloid are investigated to provide new perspectives for future clinical development studies.
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Affiliation(s)
- Pratima P Pandey
- Somaiya Institute for Research and Consultancy, Somaiya Vidyavihar University, Vidyavihar (East), Mumbai 400077, India
| | - Maushmi S Kumar
- Somaiya Institute for Research and Consultancy, Somaiya Vidyavihar University, Vidyavihar (East), Mumbai 400077, India.
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Ferreira A, Harter A, Afreen S, Kanai K, Batori S, Redei EE. The WMI Rat of Premature Cognitive Aging Presents Intrinsic Vulnerability to Oxidative Stress in Primary Neurons and Astrocytes Compared to Its Nearly Isogenic WLI Control. Int J Mol Sci 2024; 25:1692. [PMID: 38338968 PMCID: PMC10855588 DOI: 10.3390/ijms25031692] [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: 12/28/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 02/12/2024] Open
Abstract
The primary neuronal and astrocyte culture described here is from the stress-hyperreactive Wistar Kyoto (WKY) More Immobile (WMI) rat with premature aging-related memory deficit, and its nearly isogenic control, the Less Immobile (WLI) strain. Primary WMI hippocampal neurons and cortical astrocytes are significantly more sensitive to oxidative stress (OS) generated by administration of H2O2 compared to WLI cells as measured by the trypan blue cell viability assay. Intrinsic genetic vulnerability is also suggested by the decreased gene expression in WMI neurons of catalase (Cat), and in WMI cortical astrocytes of insulin-like growth factor 2 (Igf2), synuclein gamma (Sncg) and glutathione peroxidase 2 (Gpx2) compared to WLI. The expressions of several mitochondrial genes are dramatically increased in response to H2O2 treatment in WLI, but not in WMI cortical astrocytes. We propose that the vulnerability of WMI neurons to OS is due to the genetic differences between the WLI and WMI. Furthermore, the upregulation of mitochondrial genes may be a compensatory response to the generation of free radicals by OS in the WLIs, and this mechanism is disturbed in the WMIs. Thus, this pilot study suggests intrinsic vulnerabilities in the WMI hippocampal neurons and cortical astrocytes, and affirm the efficacy of this bimodal in vitro screening system for finding novel drug targets to prevent oxidative damage in illnesses.
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Affiliation(s)
- Adriana Ferreira
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (A.F.)
| | - Aspen Harter
- Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA;
| | - Sana Afreen
- Department of Cell and Developmental Biology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA; (A.F.)
| | - Karoly Kanai
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - Sandor Batori
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, 1111 Budapest, Hungary
| | - Eva E. Redei
- Department of Psychiatry and Behavioral Sciences, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA;
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Bhat MA, Dhaneshwar S. Neurodegenerative Diseases: New Hopes and Perspectives. Curr Mol Med 2024; 24:1004-1032. [PMID: 37691199 DOI: 10.2174/1566524023666230907093451] [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: 05/29/2023] [Revised: 07/10/2023] [Accepted: 07/27/2023] [Indexed: 09/12/2023]
Abstract
Alzheimer's disease, Parkinson's disease, Amyotrophic lateral sclerosis, Huntington's disease, and Friedrich ataxia are all incurable neurodegenerative diseases defined by the continuous progressive loss of distinct neuronal subtypes. Despite their rising prevalence among the world's ageing population, fewer advances have been made in the concurrent massive efforts to develop newer drugs. Recently, there has been a shift in research focus towards the discovery of new therapeutic agents for neurodegenerative diseases. In this review, we have summarized the recently developed therapies and their status in the management of neurodegenerative diseases.
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Affiliation(s)
- Mohammad Aadil Bhat
- Amity Institute of Pharmacy, Lucknow, Amity University Uttar Pradesh, Noida, UP, India
| | - Suneela Dhaneshwar
- Amity Institute of Pharmacy, Amity University Maharashtra, Mumbai, Maharashtra, India
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Keshavarzi Z, Amiresmaili S, Nazari M, Jafari E, Chahkandi M, Sindhu RK. Synergistic effects of auraptene and 17-β estradiol on traumatic brain injury treatment: oxidant/antioxidant status, inflammatory cytokines and pathology. Int J Neurosci 2023:1-13. [PMID: 37815366 DOI: 10.1080/00207454.2023.2269478] [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: 11/17/2022] [Accepted: 10/06/2023] [Indexed: 10/11/2023]
Abstract
OBJECTIVE Despite significant advances that have been made in the treatment of traumatic brain injury (TBI), it remains a global health issue. This study aimed to investigate the synergistic effects of 17-β estradiol (E2) and auraptene (AUR) on TBI treatment. METHODS In total, 70 adult male Wistar rats were divided randomly into ten main groups: Sham, TBI, TBI + DMSO, TBI + AUR (4 mg/kg), TBI + AUR (8 mg/kg), TBI + AUR (25 mg/kg), TBI + E2 group, TBI + AUR (4 mg/kg) + E2 group, TBI + AUR (8 mg/kg) + E2 group and TBI + AUR (25 mg/kg) + E2 group. Diffuse TBI was caused by the Marmarou process in male rats. The brain's tissues were harvested to check the parameters of oxidative stress and levels of inflammatory cytokine. RESULTS The finding revealed that TBI induced a significant increase in brain edema, pro-inflammatory cytokines and oxidant levels [MDA and NO], and also a decrease in the brain's antioxidant biomarkers [GPx, SOD]. We also found that E2 and AUR (25 mg/kg) significantly preserved the levels of these biomarkers. The combination of AUR concentrations and E2 showed that this treatment efficiently preserved the levels of these biomarkers. Furthermore, the combination of E2 and AUR (25 mg/kg) c could cause the most effective synergistic interaction. CONCLUSION AUR could act synergistically with E2 to treat brain injury complications.
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Affiliation(s)
- Zakieh Keshavarzi
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | | | - Masoud Nazari
- College of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Elham Jafari
- Pathology and Stem Cell Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Mohadeseh Chahkandi
- Department of Physiology, Zahedan University of Medical Sciences, Zahedan, Iran
| | - Rakesh K Sindhu
- Chitkara College of Pharmacy, Chitkara University, Chandigarh, Punjab, India
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Stępniak J, Koziróg E, Karbownik-Lewińska M. The Protective Effect of Exogenous 17β-Estradiol against Experimentally Induced Oxidative Damage to Membrane Lipids Is Stronger in Male vs. Female Porcine Thyroids: Preliminary Results. TOXICS 2023; 11:746. [PMID: 37755756 PMCID: PMC10535314 DOI: 10.3390/toxics11090746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/28/2023]
Abstract
It is well-known that thyroid diseases are more prevalent in women than in men. The contribution of sex hormones may explain such disparity. The aim of this study was to check if there are any differences between sexes concerning the effects of 17β-estradiol on oxidative damage to membrane lipids (lipid peroxidation) in porcine thyroid homogenates under basal conditions and in the presence of Fenton reaction (Fe2+ + H2O2→Fe3+ + •OH + OH-) substrates. We observed that 17β-estradiol did not change the basal level of lipid peroxidation (measured spectrophotometrically as concentrations of malondialdehyde + 4-hydroxyalkenals) in thyroid homogenates, and no differences were found between sexes. The lipid peroxidation level in response to Fe2+ + H2O2 plus 17β-estradiol was lower in male thyroids. In turn, in male thyroids, 17β-estradiol reduced experimentally induced lipid peroxidation in as low of a concentration as 0.1 μM, whereas in female thyroids the lowest effective concentration of 17β-estradiol was 10 μM, i.e., 100 times higher than in males. In conclusion, the protective effects of exogenous 17β-estradiol against experimentally induced oxidative damage to membrane lipids is stronger in male than in female thyroids. Our observation suggests that female tissue is less sensitive to the protective effects of exogenous 17β-estradiol. This sexual dimorphism of oxidative processes in the thyroid may constitute one of the mechanisms of the different prevalence of thyroid diseases in women and in men.
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Affiliation(s)
- Jan Stępniak
- Department of Oncological Endocrinology, Medical University of Lodz, 7/9 Zeligowski St., 90-752 Lodz, Poland; (J.S.); (E.K.)
| | - Edward Koziróg
- Department of Oncological Endocrinology, Medical University of Lodz, 7/9 Zeligowski St., 90-752 Lodz, Poland; (J.S.); (E.K.)
| | - Małgorzata Karbownik-Lewińska
- Department of Oncological Endocrinology, Medical University of Lodz, 7/9 Zeligowski St., 90-752 Lodz, Poland; (J.S.); (E.K.)
- Polish Mother’s Memorial Hospital–Research Institute, 281/289 Rzgowska St., 93-338 Lodz, Poland
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Patouna A, Sevdalis P, Papanikolaou K, Kourti M, Skaperda Z, Jamurtas AZ, Kouretas D. Evaluation of the effects of a honey‑based gel on blood redox biomarkers and the physiological profile of healthy adults: A pilot study. Biomed Rep 2023; 18:32. [PMID: 37034574 PMCID: PMC10074021 DOI: 10.3892/br.2023.1614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 01/18/2023] [Indexed: 04/11/2023] Open
Abstract
Honey is a natural product derived from the insect Apis mellifera. Approximately 200 different compounds are included, making it a complex mixture with antimicrobial, antioxidant, and antidiabetic activity. Flavonoids and phenolic acids contained in honey are associated with its antioxidant capacity via mechanisms such as hydrogen donation and metallic ion chelation, although the exact antioxidant mechanism remains unknown. The aim of the present study was to: i) Estimate the antioxidant activity of a natural honey-based gel, commercially available under the trade name of 'Bear Strength honey gel' and to ii) assess the physiological and redox adjustments obtained after its consumption in healthy adult participants. For this purpose, 20 healthy participants (10 men and 10 women) included in their habitual diet 70 g of the honey-based gel for 14 days in a row. Pre- and post-consumption, physiological [weight, height, body mass index, body fat, waist-to-hip ratio, resting heart rate and blood pressure (BP)] and hematological (complete blood count) data were evaluated, along with the levels of five redox biomarkers: Glutathione (GSH), catalase (CAT), total antioxidant capacity (TAC), protein carbonyls (PCARBS) and thiobarbituric reactive substances (TBARS). The results revealed that the honey-based gel decreased the diastolic and mean arterial BP, especially in women, without affecting the rest of the physiological and hematological variables. Regarding the changes observed in antioxidant status variables, GSH was increased both in the total and women's group, while TAC was increased in all groups post-consumption. No changes were detected in the levels of CAT. Regarding oxidative stress, a decrease in the levels of TBARS in the total and women's group, was observed. PCARBS levels were decreased post-consumption only in the women's group. In conclusion, the present study demonstrated the potential positive effects of a honey-based gel on BP and redox status of healthy adults in a sex-specific manner.
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Affiliation(s)
- Anastasia Patouna
- Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece
| | - Panagiotis Sevdalis
- Department of Physical Education and Sport Science, National and Kapodistrian University of Athens, 17237 Athens, Greece
| | | | - Maria Kourti
- Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece
| | - Zoi Skaperda
- Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece
| | - Athanasios Z. Jamurtas
- Department of Physical Education and Sport Science, University of Thessaly, 42100 Trikala, Greece
| | - Demetrios Kouretas
- Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, 41500 Larissa, Greece
- Correspondence to: Professor Demetrios Kouretas, Department of Biochemistry-Biotechnology, School of Health Sciences, University of Thessaly, Viopolis, Mezourlo, 41500 Larissa, Greece
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Sahoo DK, Chainy GBN. Hormone-linked redox status and its modulation by antioxidants. VITAMINS AND HORMONES 2023; 121:197-246. [PMID: 36707135 DOI: 10.1016/bs.vh.2022.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Hormones have been considered as key factors involved in the maintenance of the redox status of the body. We are making considerable progress in understanding interactions between the endocrine system, redox status, and oxidative stress with the dynamics of life, which encompasses fertilization, development, growth, aging, and various pathophysiological states. One of the reasons for changes in redox states of vertebrates leading to oxidative stress scenario is the disruption of the endocrine system. Comprehending the dynamics of hormonal status to redox state and oxidative stress in living systems is challenging. It is more difficult to come to a unifying conclusion when some hormones exhibit oxidant properties while others have antioxidant features. There is a very limited approach to correlate alteration in titers of hormones with redox status and oxidative stress with growth, development, aging, and pathophysiological stress. The situation is further complicated when considering various tissues and sexes in vertebrates. This chapter discusses the beneficial impacts of hormones with antioxidative properties, such as melatonin, glucagon, insulin, estrogens, and progesterone, which protect cells from oxidative damage and reduce pathophysiological effects. Additionally, we discuss the protective effects of antioxidants like vitamins A, E, and C, curcumin, tempol, N-acetyl cysteine, α-lipoic acid, date palm pollen extract, resveratrol, and flavonoids on oxidative stress triggered by hormones such as aldosterone, glucocorticoids, thyroid hormones, and catecholamines. Inflammation, pathophysiology, and the aging process can all be controlled by understanding how antioxidants and hormones operate together to maintain cellular redox status. Identifying the hormonal changes and the action of antioxidants may help in developing new therapeutic strategies for hormonal imbalance-related disorders.
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Affiliation(s)
- Dipak Kumar Sahoo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, Iowa States University, Ames, IA, United States.
| | - Gagan B N Chainy
- Department of Biotechnology, Utkal University, Bhubaneswar, Odisha, India
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Tamagno WA, Alves C, Vanin AP, Bilibio D, Varela ACC, Mozzato MT, Barcellos LJG. Dietary transference of 17α-ethinylestradiol changes the biochemical and behavioral biomarkers in adult zebrafish (Danio rerio). Comp Biochem Physiol C Toxicol Pharmacol 2022; 262:109472. [PMID: 36167257 DOI: 10.1016/j.cbpc.2022.109472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/18/2022] [Accepted: 09/19/2022] [Indexed: 11/24/2022]
Abstract
The endocrine disruptors (ED), even in low concentration, can change the homeostasis of an organism through the biochemical and physiological pathways; and are gaining more relevance due to their well-reported presence in the natural environment. EDs mainly affect non-target animals, which can bioaccumulate, leading to changes in metabolism. Another problem is due to several organisms that compose the aquatic biota serving as a basis of the food chain and transferring it to higher trophic levels. Here we evaluated the dietary transference of 17α-ethinylestradiol (EE2), in adult zebrafish chronically fed by EE2-bioaccumulated brine shrimp (BS). For this, we evaluated behavioral biomarkers such as the novel tank test (NTT), social preference test (SPT), mirror-induced aggressivity (MIA), and biochemical biomarkers such as acetylcholinesterase (AChE), superoxide dismutase (SOD), catalase (CTL), and glutathione-S-transferase (GST) activity, cortisol, and lipid peroxidation levels in adult zebrafish. The behavioral effects can be explained by the changed effects on acetylcholinesterase activity as well as in the antioxidant system mainly affected by the high levels of EE2 identified by HPLC shown that had occurred during a dietary transfer for fish. EE2 has a potential pattern for bioaccumulation and dietary transfer in biological tissue and EE2 can affect the behavior of fish. The observed effects could be dangerous to the environment, affecting, other animals and even human health.
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Affiliation(s)
- Wagner Antonio Tamagno
- Biochemistry Laboratory Prof. Rosilene Rodrigues Kaizer Perin of the Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão Campus, City of Sertão, State of Rio Grande do Sul, Brazil; Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Av. Roraima, 1000, Cidade Universitária, Camobi, Santa Maria, RS 97105-900, Brazil.
| | - Carla Alves
- Biochemistry Laboratory Prof. Rosilene Rodrigues Kaizer Perin of the Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão Campus, City of Sertão, State of Rio Grande do Sul, Brazil; Graduate Program in Bioexperimentation and Graduate Program in Environmental Science, Universidade de Passo Fundo, BR 285, São José, Passo Fundo, RS 99052-900, Brazil.
| | - Ana Paula Vanin
- Biochemistry Laboratory Prof. Rosilene Rodrigues Kaizer Perin of the Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão Campus, City of Sertão, State of Rio Grande do Sul, Brazil
| | - Denise Bilibio
- Biochemistry Laboratory Prof. Rosilene Rodrigues Kaizer Perin of the Federal Institute of Education, Science, and Technology of Rio Grande do Sul, Sertão Campus, City of Sertão, State of Rio Grande do Sul, Brazil.
| | - Amanda Carolina Cole Varela
- Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Av. Roraima, 1000, Cidade Universitária, Camobi, Santa Maria, RS 97105-900, Brazil
| | - Mateus Timbola Mozzato
- Veterinary Medicine Course, Universidade de Passo Fundo, BR 285, São José, Passo Fundo, RS 99052-900, Brazil.
| | - Leonardo José Gil Barcellos
- Graduate Program in Bioexperimentation and Graduate Program in Environmental Science, Universidade de Passo Fundo, BR 285, São José, Passo Fundo, RS 99052-900, Brazil; Graduate Program in Pharmacology, Universidade Federal de Santa Maria, Av. Roraima, 1000, Cidade Universitária, Camobi, Santa Maria, RS 97105-900, Brazil.
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Gérard C, Arnal JF, Jost M, Douxfils J, Lenfant F, Fontaine C, Houtman R, Archer DF, Reid RL, Lobo RA, Gaspard U, Coelingh Bennink HJT, Creinin MD, Foidart JM. Profile of estetrol, a promising native estrogen for oral contraception and the relief of climacteric symptoms of menopause. Expert Rev Clin Pharmacol 2022; 15:121-137. [PMID: 35306927 DOI: 10.1080/17512433.2022.2054413] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Estrogens used in women's healthcare have been associated with increased risks of venous thromboembolism (VTE) and breast cancer. Estetrol (E4), an estrogen produced by the human fetal liver, has recently been approved for the first time as a new estrogenic component of a novel combined oral contraceptive (E4/drospirenone [DRSP]) for over a decade. In phase 3 studies, E4/DRSP showed good contraceptive efficacy, a predictable bleeding pattern, and a favorable safety and tolerability profile. AREAS COVERED This narrative review discusses E4's pharmacological characteristics, mode of action, and the results of preclinical and clinical studies for contraception, as well as for menopause and oncology. EXPERT OPINION Extensive studies have elucidated the properties of E4 that underlie its favorable safety profile. While classical estrogens (such as estradiol) exert their actions via both activation of nuclear and membrane estrogen receptor α (ERα), E4 presents a specific profile of ERα activation: E4 binds and activates nuclear ERα but does not induce the activation of membrane ERα signaling pathways in specific tissues. E4 has a small effect on normal breast tissue proliferation and minimally affects hepatic parameters. This distinct profile of ERα activation, uncoupling nuclear and membrane activation, is unique.
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Affiliation(s)
- Céline Gérard
- Department Research and Development, Estetra Srl, an Affiliate Company of Mithra Pharmaceuticals, Liège, Belgium
| | - Jean-François Arnal
- CHU de Toulouse, Université Toulouse III, Toulouse, France.,INSERM-UPS UMR U1297, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, Toulouse, France
| | - Maud Jost
- Department Research and Development, Estetra Srl, an Affiliate Company of Mithra Pharmaceuticals, Liège, Belgium
| | - Jonathan Douxfils
- Qualiblood S.a, Namur, Belgium.,Department of Pharmacy, Namur Thrombosis and Hemostasis Center, NAmur Research Institute for Life Sciences, University of Namur, Namur, Belgium
| | - Françoise Lenfant
- CHU de Toulouse, Université Toulouse III, Toulouse, France.,INSERM-UPS UMR U1297, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, Toulouse, France
| | - Coralie Fontaine
- CHU de Toulouse, Université Toulouse III, Toulouse, France.,INSERM-UPS UMR U1297, Institut des Maladies Métaboliques et Cardiovasculaires, Université de Toulouse, Toulouse, France
| | | | | | - Robert L Reid
- Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynaecology, Queen's University, Kingston, Canada
| | - Rogerio A Lobo
- Department of Obstetrics and Gynecology, Columbia University College of Physicians and Surgeons, New York, USA
| | - Ulysse Gaspard
- Department of Obstetrics and Gynecology, University of Liège, Liège, Belgium
| | | | - Mitchell D Creinin
- Department of Obstetrics and Gynecology, University of California, Sacramento, USA
| | - Jean-Michel Foidart
- Department Research and Development, Estetra Srl, an Affiliate Company of Mithra Pharmaceuticals, Liège, Belgium.,Department of Obstetrics and Gynecology, University of Liège, Liège, Belgium
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Elliot SJ, Catanuto P, Pereira-Simon S, Xia X, Pastar I, Thaller S, Head CR, Stojadinovic O, Tomic-Canic M, Glassberg MK. Catalase, a therapeutic target in the reversal of estrogen-mediated aging. Mol Ther 2022; 30:947-962. [PMID: 34174444 PMCID: PMC8821897 DOI: 10.1016/j.ymthe.2021.06.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 01/30/2021] [Accepted: 06/09/2021] [Indexed: 02/04/2023] Open
Abstract
Despite increasing interest in the reversal of age-related processes, there is a paucity of data regarding the effects of post-menopausal-associated estrogen loss on cellular function. We studied human adipose-derived mesenchymal stem cells (hASCs) isolated from women younger than 45 years old (pre-menopause, pre-hASC) or older than 55 years old (post-menopause, post-hASC). In this study, we provide proof of concept that the age-related ineffective functionality of ASCs can be reversed to improve their ability in promoting tissue repair. We found reduced estrogen receptor expression, decreased estrogen receptor activation, and reduced sensitivity to 17β-estradiol in post-hASCs. This correlated with decreased antioxidants (catalase and superoxide dismutase [SOD] expression) and increased oxidative stress compared with pre-hASCs. Increasing catalase expression in post-hASCs restored estrogen receptor (ER) expression and their functional capacity to promote tissue repair as shown in human skin ex vivo wound healing and in vivo mouse model of lung injury. Our results suggest that the consequences of 17β-estradiol decline on the function of hASCs may be reversible by changing the oxidative stress/antioxidant composition.
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Affiliation(s)
- Sharon J. Elliot
- DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA,Corresponding author: Sharon J. Elliot, DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA.
| | - Paola Catanuto
- DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Simone Pereira-Simon
- DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Xiaomei Xia
- Department of Medicine, Division of Pulmonary, Critical Care, and Sleep, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
| | - Irena Pastar
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Seth Thaller
- DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Cheyanne R. Head
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Olivera Stojadinovic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Marjana Tomic-Canic
- Wound Healing and Regenerative Medicine Research Program, Department of Dermatology and Cutaneous Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA
| | - Marilyn K. Glassberg
- DeWitt Daughtry Family Department of Surgery, University of Miami Leonard M. Miller School of Medicine, Miami, FL 33136, USA,Department of Medicine, Division of Pulmonary, Critical Care, and Sleep, University of Arizona College of Medicine, Phoenix, AZ 85004, USA,Corresponding author: Marilyn K. Glassberg, Department of Medicine, Division of Pulmonary, Critical Care, and Sleep, University of Arizona College of Medicine, Phoenix, AZ 85004, USA.
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12
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Singh R, Bansal R. 16-Substituted steroids alleviate LPS-induced neurodegenerative disorders in rats. Eur J Pharmacol 2021; 895:173876. [PMID: 33460614 DOI: 10.1016/j.ejphar.2021.173876] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 12/23/2020] [Accepted: 01/11/2021] [Indexed: 10/22/2022]
Abstract
The neuroprotective effects of some 16-substituted steroidal derivatives against the locomotive impairment and cognitive deficits in the lipopolysaccharide (LPS)-induced neuroinflammation model of rats have been investigated. The in vivo and in vitro evaluations include behavioural tests (actophotometer, block tests, Morris water maize and elevated plus maize), estimation of the biochemical parameters such as acetylcholinesterase, lipid peroxide, reactive oxygen, and nitric oxide species and molecular assays for the key proinflammatory mediators like Tumour Necrosis Factor alpha (TNF-α) and Interleukin 1 beta (IL- 1β) after 21 days of the treatment with the steroids. Behavioural and biochemical studies indicated impairment in the locomotor activity and cognitive dysfunction in rats after LPS treatment. In addition, higher levels of TNF-α and IL-1β in the blood serum of the rats were also noticed. However, significant alleviation of LPS-induced movement and memory disorders was observed in LPS-injected rats after treatment with 16-substituted steroidal derivatives 1-11. Furthermore the biochemical and molecular studies revealed suppression of oxidative and nitrosative stress, decreased acetylcholinesterase activity, and reduction of TNF-α and IL-1β levels after treatment with compounds 1-11. Among all the 16-substituted steroidal derivatives, the compounds 8 and 11 were found to be the most active neuroprotective agents and produced effects marginally better than standard drug dexamethasone.
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Affiliation(s)
- Ranjit Singh
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Ranju Bansal
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India.
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13
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Abstract
In aerobes, oxygen is essential for maintenance of life. However, incomplete reduction of oxygen leads to generation of reactive oxygen species. These oxidants oxidise biological macromolecules present in their vicinity and thereby impair cellular functions causing oxidative stress (OS). Aerobes have evolved both enzymatic and nonenzymatic antioxidant defences to protect themselves from OS. Although hormones as means of biological coordination involve in regulation of physiological activities of tissues by regulating metabolism, any change in their normal titre leads to pathophysiological states. While, hormones such as melatonin, insulin, oestrogen, progesterone display antioxidant features, thyroid hormone, corticosteroids and catecholamines elicit free radical generation and OS, and the role of testosterone in inducing OS is debateable. This review is an attempt to understand the impact of free radical generation and cross talk between the hormones modulating antioxidant defence system under various pathophysiological conditions.
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Affiliation(s)
- Gagan B N Chainy
- Department of Biotechnology, Utkal University, Bhubaneswar, India
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14
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A Novel Prodrug Approach for Central Nervous System-Selective Estrogen Therapy. Molecules 2019; 24:molecules24224197. [PMID: 31752337 PMCID: PMC6891678 DOI: 10.3390/molecules24224197] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/08/2019] [Accepted: 11/14/2019] [Indexed: 12/16/2022] Open
Abstract
Beneficial effects of estrogens in the central nervous system (CNS) results from the synergistic combination of their well-orchestrated genomic and non-genomic actions, making them potential broad-spectrum neurotherapeutic agents. However, owing to unwanted peripheral hormonal burdens by any currently known non-invasive drug administrations, the development of estrogens as safe pharmacotherapeutic modalities cannot be realized until they are confined specifically and selectively to the site of action. We have developed small-molecule bioprecursor prodrugs carrying the para-quinol scaffold on the steroidal A-ring that are preferentially metabolized in the CNS to the corresponding estrogens. Here, we give an overview of our discovery of these prodrugs. Selected examples are shown to illustrate that, independently of the route of administrations and duration of treatments, these agents produce high concentration of estrogens only in the CNS without peripheral hormonal liability. 10β,17β-Dihydroxyestra-1,4-dien-3-one (DHED) has been the best-studied representative of this novel type of prodrugs for brain and retina health. Specific applications in preclinical animal models of centrally-regulated and estrogen-responsive human diseases, including neurodegeneration, menopausal symptoms, cognitive decline and depression, are discussed to demonstrate the translational potential of our prodrug approach for CNS-selective and gender-independent estrogen therapy with inherent therapeutic safety.
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15
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Dey P, Kundu A, Chakraborty HJ, Kar B, Choi WS, Lee BM, Bhakta T, Atanasov AG, Kim HS. Therapeutic value of steroidal alkaloids in cancer: Current trends and future perspectives. Int J Cancer 2019; 145:1731-1744. [PMID: 30387881 PMCID: PMC6767045 DOI: 10.1002/ijc.31965] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 10/04/2018] [Accepted: 10/19/2018] [Indexed: 12/21/2022]
Abstract
Discovery and development of new potentially selective anticancer agents are necessary to prevent a global cancer health crisis. Currently, alternative medicinal agents derived from plants have been extensively investigated to develop anticancer drugs with fewer adverse effects. Among them, steroidal alkaloids are conventional secondary metabolites that comprise an important class of natural products found in plants, marine organisms and invertebrates, and constitute a judicious choice as potential anti-cancer leads. Traditional medicine and modern science have shown that representatives from this compound group possess potential antimicrobial, analgesic, anticancer and anti-inflammatory effects. Therefore, systematic and recapitulated information about the bioactivity of these compounds, with special emphasis on the molecular or cellular mechanisms, is of high interest. In this review, we methodically discuss the in vitro and in vivo potential of the anticancer activity of natural steroidal alkaloids and their synthetic and semi-synthetic derivatives. This review focuses on cumulative and comprehensive molecular mechanisms, which will help researchers understand the molecular pathways involving steroid alkaloids to generate a selective and safe new lead compound with improved therapeutic applications for cancer prevention and therapy. In vitro and in vivo studies provide evidence about the promising therapeutic potential of steroidal alkaloids in various cancer cell lines, but advanced pharmacokinetic and clinical experiments are required to develop more selective and safe drugs for cancer treatment.
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Affiliation(s)
- Prasanta Dey
- School of PharmacySungkyunkwan UniversitySuwonRepublic of Korea
| | - Amit Kundu
- School of PharmacySungkyunkwan UniversitySuwonRepublic of Korea
| | | | - Babli Kar
- Bengal Homoeopathic Medical College and HospitalAsansolIndia
| | - Wahn Soo Choi
- School of MedicineKonkuk UniversityChungjuRepublic of Korea
| | - Byung Mu Lee
- School of PharmacySungkyunkwan UniversitySuwonRepublic of Korea
| | - Tejendra Bhakta
- Regional Institute of Pharmaceutical Science & TechnologyTripuraIndia
| | - Atanas G. Atanasov
- Institute of Genetics and Animal Breeding of the Polish Academy of SciencesJastrzebiecPoland
- Department of PharmacognosyUniversity of ViennaViennaAustria
| | - Hyung Sik Kim
- School of PharmacySungkyunkwan UniversitySuwonRepublic of Korea
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Almeer RS, Kassab RB, AlBasher GI, Alarifi S, Alkahtani S, Ali D, Abdel Moneim AE. Royal jelly mitigates cadmium-induced neuronal damage in mouse cortex. Mol Biol Rep 2018; 46:119-131. [PMID: 30414103 DOI: 10.1007/s11033-018-4451-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 10/18/2018] [Indexed: 12/13/2022]
Abstract
This study aimed to evaluate the potential neuroprotective effect of royal jelly (RJ) against Cd-induced neuronal damage. Twenty-eight adult mice were placed equally into four groups. The control group received intraperitoneal (IP) injections of normal saline; the cadmium chloride (CdCl2) group was IP-injected 6.5 mg/kg (mg per kg of bodyweight) CdCl2; the RJ group was gavaged 85 mg/kg RJ; and the RJ + CdCl2 group was orally administered 85 mg/kg RJ 2 h before receiving IP-injections of 6.5 mg/kg CdCl2. All groups were treated for seven consecutive days and the mice were decapitated 24 h after the final dose. Cd accumulation was recorded in the cortical homogenates, accompanied by elevated levels of lipid peroxidation, nitric oxide, tumor necrosis factor-α, interleukin-1β, and the pro-apoptotic mRNA Bax and caspase-3. Meanwhile, significantly decreased levels of detoxifying antioxidant enzymes including GSH-Px, GSH-R, SOD, and CAT, anti-apoptotic mRNA Bcl-2, and monoamines such as norepinephrine, dopamine, and serotonin were also observed, along with reduced gene expression of Nrf2-dependent antioxidants. Interestingly, in mice pretreated with RJ, the assessed parameters remained near normal levels. Our data provide evidence that RJ treatment has the potential to protect cortical neurons in Cd-intoxicated mice via its antioxidant, anti-inflammatory, anti-apoptotic, and neuromodulatory activity.
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Affiliation(s)
- Rafa S Almeer
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia.
| | - Rami B Kassab
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
| | - Gadah I AlBasher
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saud Alarifi
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Saad Alkahtani
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Daoud Ali
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Ahmed E Abdel Moneim
- Department of Zoology and Entomology, Faculty of Science, Helwan University, Cairo, Egypt
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17
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Depression and anxiety symptoms are associated with prooxidant-antioxidant balance: A population-based study. J Affect Disord 2018; 238:491-498. [PMID: 29935471 DOI: 10.1016/j.jad.2018.05.079] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 04/01/2018] [Accepted: 05/27/2018] [Indexed: 01/01/2023]
Abstract
BACKGROUND Depression and anxiety are significantly associated with systemic inflammation. Moreover, oxidative stress resulting from a disturbance in the prooxidant-antioxidant balance is linked to inflammation-related conditions. Therefore, depression/anxiety symptoms may also be associated with oxidative stress. OBJECTIVE To examine the association between depression/anxiety symptoms and serum prooxidant-antioxidant balance (PAB) in adults who participated in a large population-based, cross-sectional study. METHODS Serum PAB values were measured in 7516 participants (62% females and 38% males) aged 35-65 years, enrolled in a population-based cohort study. beck depression and anxiety inventories were used to evaluate symptoms of depression and anxiety. Multinomial logistic regression was used to examine the effect of confounders on the status of serum PAB change. RESULTS Among men, serum PAB values were increased incrementally from 1.55 ± 0.47 to 1.59 ± 0.47, 1.69 ± 0.38, and 1.68 ± 0.38 in the no or minimal, mild, moderate and severe depression groups, respectively (Ptrend < 0.001). Serum PAB values also increased significantly across these four corresponding groups among women [1.70 ± 0.45, 1.73 ± 0.44, 1.75 ± 0.44, and 1.76 ± 0.40, (Ptrend = 0.005)]. About anxiety, serum PAB values increased significantly across the four groups in men (Ptrend = 0.02) but not in women (Ptrend = 0.2). The adjusted odds ratios for serum PAB values among men with severe depression and anxiety symptoms were 1.75 and 1.27, respectively. Moreover, the adjusted odds ratios for serum PAB values among women with severe depression and anxiety symptoms were 1.40 and 1.17, respectively. CONCLUSION Symptoms of depression and anxiety appear to be associated with higher degrees of oxidative stress, expressed by higher serum PAB values.
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18
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Chen H, Liang X, Sun T, Qiao X, Zhan Z, Li Z, He C, Ya H, Yuan M. Synthesis and biological evaluation of estrone 3-O-ether derivatives containing the piperazine moiety. Steroids 2018; 134:101-109. [PMID: 29476759 DOI: 10.1016/j.steroids.2018.02.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 01/25/2018] [Accepted: 02/09/2018] [Indexed: 12/29/2022]
Abstract
A series of new estrone derivatives were designed and synthesized, and their structures were confirmed by spectroscopic methods. All new estrone derivatives were investigated for their in vitro cytotoxic efficacies against a panel of three human prostate cancer cell lines (PC-3, LNCaP, and DU145). The derivatives 6, 7, 10, 15, 16, 20, 21, 22, 24 and 26 showed important cytotoxic actions against individual carcinoma cell line collections. Moreover, antagonistic activities of compounds (7, 15, 16 and 21) towards a1-ARs (α1A, α1B, and α1D) were further evaluated using dual-luciferase reporter assays, and the compounds 16 and 21 exhibited better a1-ARs subtype selectivity. The structure-activity relationship (SAR) suggested that the substitute's type and position on the phenyl group leads to the interesting variations within pharmacological effects of resultant molecular systems.
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Affiliation(s)
- Hong Chen
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Xue Liang
- The Fifth Affiliated Hospital of Guangzhou Medical University, 621# Gangwan Road, Guangzhou 510700, Guangdong Province, China
| | - Tao Sun
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Xiaoguang Qiao
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Zhou Zhan
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Ziyong Li
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Chaojun He
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China
| | - Huiyuan Ya
- College of Food and Drug, Luoyang Normal University, 6# Jiqing Road, Luoyang 471934, Henan Province, China.
| | - Mu Yuan
- Pharmaceutical Research Center, Guangzhou Medical University, 195# Dongfengxi Road, Guangzhou 511436, Guangdong Province, China.
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19
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Mester A, Magyar Z, Molnar A, Somogyi V, Tanczos B, Peto K, Nemeth N. Age- and gender-related hemorheological alterations in intestinal ischemia-reperfusion in the rat. J Surg Res 2018; 225:68-75. [PMID: 29605037 DOI: 10.1016/j.jss.2017.12.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/15/2017] [Accepted: 12/29/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Intestinal ischemia-reperfusion (I/R) is a life-threatening clinical disorder. During I/R, the microrheological parameters of blood (red blood cell deformability and aggregation) worsen, which may contribute to microcirculatory deterioration. Age and gender also have a great influence on hemorheological parameters. We aimed to investigate the gender and age-related microrheological alterations during intestinal I/R. MATERIALS AND METHODS After the cannulation of the left femoral artery, median laparotomy was performed in Crl:WI rats under general anesthesia. In the young control animals there were no other interventions (female n = 7; male n = 7). In the young (female n = 7; male n = 7) and older I/R groups (female n = 6; male n = 6), the superior mesenteric artery was clipped for 30 min, and a 120-min reperfusion period was observed afterward. Blood samples were taken before and at the 30-min ischemia, in the 30th, 60th, and 120th min of the reperfusion. Hematological parameters, erythrocyte deformability, and aggregation were determined. RESULTS Hematocrit increased significantly in the younger female I/R group. Red blood cell count was higher in male and older animals. In case of white blood cell count, male animals had higher values compared with females. Platelet count elevated in the younger male and older female I/R animals. Red blood cell deformability worsened, mainly in the male and older I/R groups. Enhanced erythrocyte aggregation was seen in all groups, being more expressed in the female I/R groups. CONCLUSIONS Microrheological parameters show gender and age-related differences during intestinal I/R. These observations have importance in the planning and evaluation of experimental data.
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Affiliation(s)
- Anita Mester
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Magyar
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Akos Molnar
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Viktoria Somogyi
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Bence Tanczos
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Peto
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Norbert Nemeth
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
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20
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Tschiffely AE, Schuh RA, Prokai-Tatrai K, Ottinger MA, Prokai L. An exploratory investigation of brain-selective estrogen treatment in males using a mouse model of Alzheimer's disease. Horm Behav 2018; 98:16-21. [PMID: 29183688 PMCID: PMC5999339 DOI: 10.1016/j.yhbeh.2017.11.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 07/24/2017] [Accepted: 11/21/2017] [Indexed: 11/19/2022]
Abstract
Estrogens are neuroprotective, and studies suggest that they may mitigate the pathology and symptoms of Alzheimer's disease (AD) in female models. However, central estrogen effects have not been examined in males in the context of AD. The purpose of this follow-up study was to assess the benefits of a brain-selective 17β-estradiol estrogen prodrug, 10β,17β-hydroxyestra-1,4-dien-3-one (DHED), also in the male APPswe/PS1dE9 double-transgenic mouse model of the disease. After continuously exposing 6-month old animals to DHED for two months, their brains showed decreased amyloid precursor and amyloid-β protein levels. The DHED-treated APPswe/PS1dE9 double transgenic subjects also exhibited enhanced performance in a cognitive task, while 17β-estradiol treatment did not reach statistical significance. Taken together, data presented here suggest that DHED may also have therapeutic benefit in males and warrant further investigations to fully elucidate the potential of targeted estrogen therapy for a gender-independent treatment of early-stage AD.
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Affiliation(s)
- Anna E Tschiffely
- Neuroscience and Cognitive Science Graduate Program, University of Maryland College Park, MD 20742, USA; Department of Animal and Avian Sciences, University of Maryland College Park, MD 20742, USA
| | - Rosemary A Schuh
- Department of Neurology, University of Maryland School of Medicine, Baltimore, MD 21201, USA; Research Service, VAMHCS, Baltimore, MD 21201, USA
| | - Katalin Prokai-Tatrai
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Mary Ann Ottinger
- Department of Animal and Avian Sciences, University of Maryland College Park, MD 20742, USA.
| | - Laszlo Prokai
- Center for Neuroscience Discovery, Institute for Healthy Aging, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
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21
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Raghava N, Das BC, Ray SK. Neuroprotective effects of estrogen in CNS injuries: insights from animal models. ACTA ACUST UNITED AC 2017; 6:15-29. [PMID: 28845391 PMCID: PMC5567743 DOI: 10.2147/nan.s105134] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Among the estrogens that are biosynthesized in the human body, 17β-estradiol (estradiol or E2) is the most common and the best estrogen for neuroprotection in animal models of the central nervous system (CNS) injuries such as spinal cord injury (SCI), traumatic brain injury (TBI), and ischemic brain injury (IBI). These CNS injuries are not only serious health problems, but also enormous economic burden on the patients, their families, and the society at large. Studies from animal models of these CNS injuries provide insights into the multiple neuroprotective mechanisms of E2 and also suggest the possibility of translating the therapeutic efficacy of E2 in the treatment SCI, TBI, and IBI in humans in the near future. The pathophysiology of these injuries includes loss of motor function in the limbs, arms and their extremities, cognitive deficit, and many other serious consequences including life-threatening paralysis, infection, and even death. The potential application of E2 therapy to treat the CNS injuries may become a trend as the results are showing significant therapeutic benefits of E2 for neuroprotection when administered into the animal models of SCI, TBI, and IBI. This article describes the plausible mechanisms how E2 works with or without the involvement of estrogen receptors and provides an overview of the known neuroprotective effects of E2 in these three CNS injuries in different animal models. Because activation of estrogen receptors has profound implications in maintaining and also affecting normal physiology, there are notable impediments in translating E2 therapy to the clinics for neuroprotection in CNS injuries in humans. While E2 may not yet be the sole molecule for the treatment of CNS injuries due to the controversies surrounding it, the neuroprotective effects of its metabolite and derivative or combination of E2 with another therapeutic agent are showing significant impacts in animal models that can potentially shape the new treatment strategies for these CNS injuries in humans.
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Affiliation(s)
- Narayan Raghava
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, USA
| | - Bhaskar C Das
- Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Swapan K Ray
- Department of Pathology, Microbiology and Immunology, University of South Carolina School of Medicine, Columbia, SC, USA
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Tskitishvili E, Pequeux C, Munaut C, Viellevoye R, Nisolle M, Noël A, Foidart JM. Use of estetrol with other steroids for attenuation of neonatal hypoxic-ischemic brain injury: to combine or not to combine? Oncotarget 2016; 7:33722-43. [PMID: 27231853 PMCID: PMC5085115 DOI: 10.18632/oncotarget.9591] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 05/17/2016] [Indexed: 12/17/2022] Open
Abstract
Estetrol (E4), estradiol (E2) and progesterone (P4) have important antioxidative and neuroprotective effects in neuronal system. We aimed to study the consequence of combined steroid therapy in neonatal hypoxic-ischemic encephalopathy (HIE). In vitro the effect of E4 combined with other steroids on oxidative stress and the cell viability in primary hippocampal cultures was evaluated by lactate dehydrogenase and cell survival assays. In vivo neuroprotective and therapeutic efficacy of E4 combined with other steroids was studied in HIE model of immature rats. The rat pups rectal temperature, body and brain weights were evaluated.The hippocampus and the cortex were investigated by histo/immunohistochemistry: intact cell number counting, expressions of markers for early gray matter lose, neuro- and angiogenesis were studied. Glial fibrillary acidic protein was evaluated by ELISA in blood samples. In vitro E4 and combinations of high doses of E4 with P4 and/or E2 significantly diminished the LDH activity and upregulated the cell survival.In vivopretreatment or treatment by different combinations of E4 with other steroids had unalike effects on body and brain weight, neuro- and angiogenesis, and GFAP expression in blood. The combined use of E4 with other steroids has no benefit over the single use of E4.
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Affiliation(s)
- Ekaterine Tskitishvili
- Laboratory of Development Biology and Tumor, GIGA-Cancer, Department of Obstetrics and Gynecology/Department of Clinical Sciences, University of Liege, Liege 1, Belgium
| | - Christel Pequeux
- Laboratory of Development Biology and Tumor, GIGA-Cancer, Department of Obstetrics and Gynecology/Department of Clinical Sciences, University of Liege, Liege 1, Belgium
| | - Carine Munaut
- Laboratory of Development Biology and Tumor, GIGA-Cancer, Department of Obstetrics and Gynecology/Department of Clinical Sciences, University of Liege, Liege 1, Belgium
| | - Renaud Viellevoye
- Neonatal Intensive Care Unit, Department of Pediatrics, University of Liege, Liege 1, Belgium
| | - Michelle Nisolle
- Department of Obstetrics and Gynecology, University of Liege, Liege1, Belgium
| | - Agnes Noël
- Laboratory of Development Biology and Tumor, GIGA-Cancer, Department of Obstetrics and Gynecology/Department of Clinical Sciences, University of Liege, Liege 1, Belgium
| | - Jean-Michel Foidart
- Laboratory of Development Biology and Tumor, GIGA-Cancer, Department of Obstetrics and Gynecology/Department of Clinical Sciences, University of Liege, Liege 1, Belgium
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Stepniak J, Karbownik-Lewinska M. 17β-estradiol prevents experimentally-induced oxidative damage to membrane lipids and nuclear DNA in porcine ovary. Syst Biol Reprod Med 2015; 62:17-21. [PMID: 26677908 DOI: 10.3109/19396368.2015.1101510] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Estrogens, with their principle representative 17β-estradiol, contribute to the redox state of cells showing both pro- and antioxidative properties. In the ovary, being the main source of estrogens, maintaining balance between the production and detoxification of ROS is crucial. Whereas ovary estrogen concentration is difficult to estimate, its circulating concentration in women may reach the nanomolar level. The aim of the study was to evaluate the effects of 17β-estradiol on oxidative damage to membrane lipids (lipid peroxidation, LPO) and to nuclear DNA in the porcine ovary under basal conditions and in the presence of Fenton reaction (Fe(2+)+H2O2→Fe(3+)+(•)OH + OH(-)) substrates. Ovary homogenates and DNA were incubated in the presence of 17β-estradiol (1 mM-1 pM), without/with FeSO4 (30 μM) + H2O2 (0.5 mM). Malondialdehyde + 4-hydroxyalkenals (MDA + 4-HDA) concentration (LPO index) was measured spectrophotometrically. The concentration of 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) (DNA damage index) was measured by HPLC. We observed that 17β-estradiol did not alter the basal level of oxidative damage, but reduced Fe(2+)+H2O2-induced oxidative damage to membrane lipids when ≥10 nM and to DNA at concentrations ≥1 nM. In the ovary at near physiological concentration, 17β-estradiol prevents experimentally induced oxidative damage. This suggests that under physiological conditions this hormone may contribute to protecting the ovary against oxidative damage.
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Affiliation(s)
- Jan Stepniak
- a Department of Oncological Endocrinology , Medical University of Lodz and
| | - Malgorzata Karbownik-Lewinska
- a Department of Oncological Endocrinology , Medical University of Lodz and.,b Department of Endocrinology and Metabolic Diseases , Polish Mother's Memorial Hospital - Research Institute , Lodz , Poland
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Fidarov AF, Vihma V, Bogautdinov RP, Morozkina SN, Shavva AG, Tikkanen MJ. Novel structural features increase the antioxidant effect of estrogen analogues on low density lipoprotein. J Steroid Biochem Mol Biol 2015; 154:142-9. [PMID: 26255276 DOI: 10.1016/j.jsbmb.2015.08.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 07/01/2015] [Accepted: 08/03/2015] [Indexed: 10/23/2022]
Abstract
Many known estrogens, both natural and synthetic, may act as antioxidants. We designed and synthesized 22 novel estrogen analogues with different ring junctions or substitutions, such as fluorine. We studied the antioxidant capacity in vitro of 35 synthetic estrogen analogues in aqueous lipoprotein solution by monitoring the formation of conjugated dienes. In addition to a free C-3 hydroxyl group, the two most active antioxidants had either a methyl group at C-4 and a six-carbon D-ring, or a fluorine atom at C-2 and an unsaturated B-ring. Extension of the D-ring increased the antioxidant capacity of 6-oxa estrogens. Compounds with a fluorine atom at C-2 were similar or more potent antioxidants compared with the principal endogenous estrogen, 17β-estradiol. In compounds with a substituted C-3 hydroxyl group, the antioxidant capacity could be significantly increased by additional double bonds in the C- or D-rings. In conclusion, we show that the antioxidant capacity of estrogen analogues could be increased by structural changes.
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Affiliation(s)
- Alan F Fidarov
- Department of Natural Compounds Chemistry, Faculty of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, 198504 St. Petersburg, Russia
| | - Veera Vihma
- Folkhälsan Research Center, Haartmaninkatu 8, Helsinki, 00290, Finland; University of Helsinki and Helsinki University Central Hospital, Heart and Lung Center, Haartmaninkatu 8, 00290 Helsinki, Finland.
| | - Roman P Bogautdinov
- Department of Natural Compounds Chemistry, Faculty of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, 198504 St. Petersburg, Russia
| | - Svetlana N Morozkina
- Department of Natural Compounds Chemistry, Faculty of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, 198504 St. Petersburg, Russia
| | - Alexander G Shavva
- Department of Natural Compounds Chemistry, Faculty of Chemistry, St. Petersburg State University, Universitetskii pr. 26, Petrodvorets, 198504 St. Petersburg, Russia
| | - Matti J Tikkanen
- Folkhälsan Research Center, Haartmaninkatu 8, Helsinki, 00290, Finland; University of Helsinki and Helsinki University Central Hospital, Heart and Lung Center, Haartmaninkatu 8, 00290 Helsinki, Finland
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25
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Lee S, Park S, Won J, Lee SR, Chang KT, Hong Y. The Incremental Induction of Neuroprotective Properties by Multiple Therapeutic Strategies for Primary and Secondary Neural Injury. Int J Mol Sci 2015; 16:19657-70. [PMID: 26295390 PMCID: PMC4581318 DOI: 10.3390/ijms160819657] [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] [Subscribe] [Scholar Register] [Received: 06/14/2015] [Revised: 08/07/2015] [Accepted: 08/07/2015] [Indexed: 01/09/2023] Open
Abstract
Neural diseases including injury by endogenous factors, traumatic brain injury, and degenerative neural injury are eventually due to reactive oxygen species (ROS). Thus ROS generation in neural tissues is a hallmark feature of numerous forms of neural diseases. Neural degeneration and the neural damage process is complex, involving a vast array of tissue structure, transcriptional/translational, electrochemical, metabolic, and functional events within the intact neighbors surrounding injured neural tissues. During aging, multiple changes involving physical, chemical, and biochemical processes occur from the molecular to the morphological levels in neural tissues. Among many recommended therapeutic candidates, melatonin also plays a role in protecting the nervous system from anti-inflammation and efficiently safeguards neuronal cells via antioxidants and other endogenous/exogenous beneficial factors. Therefore, given the wide range of mechanisms responsible for neuronal damage, multi-action drugs or therapies for the treatment of neural injury that make use of two or more agents and target several pathways may have greater efficacy in promoting functional recovery than a single therapy alone.
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Affiliation(s)
- Seunghoon Lee
- Department of Physical Therapy, College of Biomedical Science & Engineering, Inje University, Gimhae 50834, Korea.
- Biohealth Products Research Center (BPRC), Inje University, Gimhae 50834, Korea.
- Ubiquitous Healthcare & Anti-aging Research Center (u-HARC), Inje University, Gimhae 50834, Korea.
| | - Sookyoung Park
- Ubiquitous Healthcare & Anti-aging Research Center (u-HARC), Inje University, Gimhae 50834, Korea.
- Department of Physical Therapy, College of Life Sciences, Kyungnam University, Changwon 51767, Korea.
| | - Jinyoung Won
- Biohealth Products Research Center (BPRC), Inje University, Gimhae 50834, Korea.
- Ubiquitous Healthcare & Anti-aging Research Center (u-HARC), Inje University, Gimhae 50834, Korea.
- Department of Rehabilitation Science, Graduate School of Inje University, Gimhae 50834, Korea.
| | - Sang-Rae Lee
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang 28116, Korea.
| | - Kyu-Tae Chang
- National Primate Research Center (NPRC), Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang 28116, Korea.
| | - Yonggeun Hong
- Department of Physical Therapy, College of Biomedical Science & Engineering, Inje University, Gimhae 50834, Korea.
- Biohealth Products Research Center (BPRC), Inje University, Gimhae 50834, Korea.
- Ubiquitous Healthcare & Anti-aging Research Center (u-HARC), Inje University, Gimhae 50834, Korea.
- Department of Rehabilitation Science, Graduate School of Inje University, Gimhae 50834, Korea.
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Sribalan R, Padmini V, Lavanya A, Ponnuvel K. Evaluation of antimicrobial activity of glycinate and carbonate derivatives of cholesterol: Synthesis and characterization. Saudi Pharm J 2015; 24:658-668. [PMID: 27829808 PMCID: PMC5094438 DOI: 10.1016/j.jsps.2015.05.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 05/26/2015] [Indexed: 11/25/2022] Open
Abstract
A series of glycinate and carbonate derivatives of cholesterol (4a–t) were synthesized, characterized and assessed for their in vitro antimicrobial activity. Our results revealed that the compounds exerted inhibitory activities against gram-negative bacteria and fungi.
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Affiliation(s)
- Rajendran Sribalan
- Department of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Vediappen Padmini
- Department of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Andiappan Lavanya
- Department of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
| | - Kandasamy Ponnuvel
- Department of Organic Chemistry, Madurai Kamaraj University, Madurai 625 021, Tamil Nadu, India
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Maher J, Hunter AC, Mabley JG, Lippiat J, Allen MC. Smooth muscle relaxation and activation of the large conductance Ca(++)-activated K+ (BK(Ca)) channel by novel oestrogens. Br J Pharmacol 2015; 169:1153-65. [PMID: 23586466 DOI: 10.1111/bph.12211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Revised: 02/25/2013] [Accepted: 03/24/2013] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND AND PURPOSE Oestrogens can interact directly with membrane receptors and channels and can activate vascular BK(Ca) channels. We hypothesized that novel oestrogen derivatives could relax smooth muscle by an extracllular effect on the α and β1 subunits of the BK(Ca) channel, rather than at an intracellular site. EXPERIMENTAL APPROACH We studied the effects of novel oestrogens on the tension of pre-contracted isolated rat aortic rings, and on the electrophysiological properties of HEK 293 cells expressing the hSloα or hSloα+β1 subunits. Two of the derivatives incorporated a quaternary ammonium side-chain making them membrane impermeable. KEY RESULTS Oestrone, oestrone oxime and Quat DME-oestradiol relaxed pre-contracted rat aorta, but only Quat DME-oestradiol-induced relaxation was iberiotoxin sensitive. However, only potassium currents recorded in HEK 293 cells over-expressing both hSloα and hSloβ1 were activated by oestrone, oestrone oxime and Quat DME-oestradiol. CONCLUSION AND IMPLICATIONS The novel oestrogens were able to relax smooth muscle, but through different mechanisms. In particular, oestrone oxime required the presence of the endothelium to exert much of its effect, whilst Quat DME-oestradiol depended both on NO and BK(Ca) channel activation. The activation of BK(Ca) currents in HEK 293 cells expressing hSloα+β1 by Quat DME-oestradiol is consistent with an extracellular binding site between the two subunits. The binding site resides between the extracellular N terminal of the α subunit and the extracellular loop between TM1 and 2 of the β1 subunit. Membrane-impermeant Quat DME-oestradiol lacks an exchangeable hydrogen on the A ring obviating antioxidant activity.
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Affiliation(s)
- J Maher
- School of Pharmacy and Biomolecular Science, University of Brighton, Brighton, UK
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28
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Protective actions of 17β-estradiol and progesterone on oxidative neuronal injury induced by organometallic compounds. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:343706. [PMID: 25815107 PMCID: PMC4359856 DOI: 10.1155/2015/343706] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Accepted: 02/06/2015] [Indexed: 01/10/2023]
Abstract
Steroid hormones synthesized in and secreted from peripheral endocrine glands pass through the blood-brain barrier and play a role in the central nervous system. In addition, the brain possesses an inherent endocrine system and synthesizes steroid hormones known as neurosteroids. Increasing evidence shows that neuroactive steroids protect the central nervous system from various harmful stimuli. Reports show that the neuroprotective actions of steroid hormones attenuate oxidative stress. In this review, we summarize the antioxidative effects of neuroactive steroids, especially 17β-estradiol and progesterone, on neuronal injury in the central nervous system under various pathological conditions, and then describe our recent findings concerning the neuroprotective actions of 17β-estradiol and progesterone on oxidative neuronal injury induced by organometallic compounds, tributyltin, and methylmercury.
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Anticancer and multidrug resistance-reversal effects of solanidine analogs synthetized from pregnadienolone acetate. Molecules 2014; 19:2061-76. [PMID: 24549231 PMCID: PMC6271930 DOI: 10.3390/molecules19022061] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2013] [Revised: 01/29/2014] [Accepted: 02/06/2014] [Indexed: 12/18/2022] Open
Abstract
A set of solanidine analogs with antiproliferative properties were recently synthetized from pregnadienolone acetate, which occurs in Nature. The aim of the present study was an in vitro characterization of their antiproliferative action and an investigation of their multidrug resistance-reversal activity on cancer cells. Six of the compounds elicited the accumulation of a hypodiploid population of HeLa cells, indicating their apoptosis-inducing character, and another one caused cell cycle arrest at the G2/M phase. The most effective agents inhibited the activity of topoisomerase I, as evidenced by plasmid supercoil relaxation assays. One of the most potent analogs down-regulated the expression of cell-cycle related genes at the mRNA level, including tumor necrosis factor alpha and S-phase kinase-associated protein 2, and induced growth arrest and DNA damage protein 45 alpha. Some of the investigated compounds inhibited the ABCB1 transporter and caused rhodamine-123 accumulation in murine lymphoma cells transfected by human MDR1 gene, expressing the efflux pump (L5178). One of the most active agents in this aspect potentiated the antiproliferative action of doxorubicin without substantial intrinsic cytostatic capacity. The current results indicate that the modified solanidine skeleton is a suitable substrate for the rational design and synthesis of further innovative drug candidates with anticancer activities.
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30
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Richardson TE, Kelly HN, Yu AE, Simpkins JW. Therapeutic strategies in Friedreich's ataxia. Brain Res 2013; 1514:91-7. [PMID: 23587934 PMCID: PMC4461031 DOI: 10.1016/j.brainres.2013.04.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Revised: 04/02/2013] [Accepted: 04/02/2013] [Indexed: 10/26/2022]
Abstract
First established as a diagnosis by Nikolaus Friedreich in 1863, Friedreich's ataxia (FA) is an autosomal recessive progressive neurodegenerative disorder cause by a trinucleotide repeat expansion. FA begins with the functional absence of the FXN gene product frataxin, a protein whose exact function still remains unknown. This absence results in impaired intracellular antioxidant defenses, dysregulation of iron-sulfur cluster proteins, depression of aerobic electron transport chain respiration, massive mitochondrial dysfunction, and ultimately cell death in the brain, spinal cord and heart. Herein, we review the molecular and cellular pathogenesis leading to widespread organ system dysfunction, as well as current therapeutic research aimed at preventing the debilitating effects of frataxin loss and preventing the signs and symptoms associated of FA. We also discuss the ongoing treatment strategies employed by our laboratory to prevent mitochondrial damage using synergistic effects of 17β-estradiol and methylene blue, previously shown by our group and others to have protective effects in human FA fibroblasts. This article is part of a Special Issue entitled Hormone Therapy.
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Affiliation(s)
- Timothy E. Richardson
- Institute for Aging and Alzheimer’s Disease Research, Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
- Texas College of Osteopathic Medicine, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Heather N. Kelly
- Texas College of Osteopathic Medicine, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - Amanda E. Yu
- Institute for Aging and Alzheimer’s Disease Research, Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
- Texas College of Osteopathic Medicine, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
| | - James W. Simpkins
- Institute for Aging and Alzheimer’s Disease Research, Department of Pharmacology & Neuroscience, University of North Texas Health Science Center, Fort Worth, TX 76107, USA
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31
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Macedo UBDO, Martins RR, Freire Neto FP, Oliveira YMDC, Medeiros ADC, Brandão-Neto J, Rezende AAD, Almeida MDG. Oophorectomy hinders antioxidant adaptation promoted by swimming in Wistar rats. Appl Physiol Nutr Metab 2013; 38:148-53. [PMID: 23438225 DOI: 10.1139/apnm-2012-0121] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Oxidative stress is associated with postmenopause and is also responsible for various metabolic alterations. The redox imbalance observed during ovarian decline can be induced experimentally by bilateral ovariectomy in rats. In addition to hormone replacement, regular moderate physical exercise is indicated to prevent several common postmenopausal diseases. This study aimed to assess the effect of daily swimming on the antioxidant defense system of oophorectomized Wistar rats. Control and oophorectomized groups were submitted to 1 h of daily swimming for 90 days. Levels of lipid peroxidation and glutathione content and the activities of superoxide dismutase enzyme and glutathione peroxidase in erythrocytes, liver, and brain were assessed every 30 days. The control group exhibited lower lipoperoxidation that was associated with a significant increase in superoxide dismutase enzyme activity, glutathione peroxidase activity, and glutathione content in erythrocytes and liver; however, swimming did not cause changes in antioxidant parameters in the brain over time. The oophorectomized group showed no antioxidant adaptation to daily swimming and had greater oxidative damage in the liver and blood. Our results suggest that ovariectomy hinders antioxidant adaptation in Wistar rats submitted to daily swimming.
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32
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Prokai L, Rivera-Portalatin NM, Prokai-Tatrai K. Quantitative structure-activity relationships predicting the antioxidant potency of 17β-estradiol-related polycyclic phenols to inhibit lipid peroxidation. Int J Mol Sci 2013; 14:1443-54. [PMID: 23344051 PMCID: PMC3565329 DOI: 10.3390/ijms14011443] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Revised: 01/03/2013] [Accepted: 01/05/2013] [Indexed: 12/21/2022] Open
Abstract
The antioxidant potency of 17β-estradiol and related polycyclic phenols has been well established. This property is an important component of the complex events by which these types of agents are capable to protect neurons against the detrimental consequences of oxidative stress. In order to relate their molecular structure and properties with their capacity to inhibit lipid peroxidation, a marker of oxidative stress, quantitative structure-activity relationship (QSAR) studies were conducted. The inhibition of Fe3+-induced lipid peroxidation in rat brain homogenate, measured through an assay detecting thiobarbituric acid reactive substances for about seventy compounds were correlated with various molecular descriptors. We found that lipophilicity (modeled by the logarithm of the n-octanol/water partition coefficient, logP) was the property that influenced most profoundly the potency of these compounds to inhibit lipid peroxidation in the biological medium studied. Additionally, the important contribution of the bond dissociation enthalpy of the phenolic O–H group, a shape index, the solvent-accessible surface area and the energy required to remove an electron from the highest occupied molecular orbital were also confirmed. Several QSAR equations were validated as potentially useful exploratory tools for identifying or designing novel phenolic antioxidants incorporating the structural backbone of 17β-estradiol to assist therapy development against oxidative stress-associated neurodegeneration.
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Affiliation(s)
- Laszlo Prokai
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +1-817-735-2206; Fax: +1-817-735-2118
| | - Nilka M. Rivera-Portalatin
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; E-Mail:
| | - Katalin Prokai-Tatrai
- Department of Pharmaceutical Sciences, UNT System College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA; E-Mail:
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Berényi Á, Minorics R, Iványi Z, Ocsovszki I, Ducza E, Thole H, Messinger J, Wölfling J, Mótyán G, Mernyák E, Frank É, Schneider G, Zupkó I. Synthesis and investigation of the anticancer effects of estrone-16-oxime ethers in vitro. Steroids 2013; 78:69-78. [PMID: 23127813 DOI: 10.1016/j.steroids.2012.10.009] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 09/28/2012] [Accepted: 10/10/2012] [Indexed: 11/21/2022]
Abstract
An expanding body of evidence indicates the possible role of estrane derivatives as useful anticancer agents. The aim of this study was to describe the cytotoxic effects of 63 newly synthetized estrone-16-oxime ethers on human cancer cell lines (cervix carcinoma HeLa, breast carcinoma MCF7 and skin epidermoid carcinoma A431), studied by means of the MTT assay. Four of the most promising compounds were selected for participation in additional experiments in order to characterize the mechanism of action, including cell cycle analysis, morphological study and the 5-bromo-2'-deoxyuridine incorporation assay. The cancer selectivity was tested on a noncancerous fibroblast cell line (MRC-5). Since apoptosis and cell cycle disturbance were observed, caspase-3 activities were further assayed for the two most effective agents. These estrone-16-oxime analogs activated caspase-3 and changed the mRNA level expression of endogenous factors regulating the G1-S phase transition (retinoblastoma protein, CDK4 and p16). The repression of retinoblastoma protein was reinforced at a protein level too. These experimental data lead to the conclusion that estrone-16-oxime ethers may be regarded as potential starting structures for the design of novel anticancer agents.
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Affiliation(s)
- Ágnes Berényi
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
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Sheikh S, Safia, Haque E, Mir SS. Neurodegenerative Diseases: Multifactorial Conformational Diseases and Their Therapeutic Interventions. JOURNAL OF NEURODEGENERATIVE DISEASES 2012; 2013:563481. [PMID: 26316993 PMCID: PMC4437348 DOI: 10.1155/2013/563481] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Accepted: 12/17/2012] [Indexed: 12/30/2022]
Abstract
Neurodegenerative diseases are multifactorial debilitating disorders of the nervous system that affect approximately 30 millionindividuals worldwide. Neurodegenerative diseases such as Alzheimer's, Parkinson's, Huntington's, and amyotrophic lateral sclerosis diseases are the consequence of misfolding and dysfunctional trafficking of proteins. Beside that, mitochondrial dysfunction, oxidative stress, and/or environmental factors strongly associated with age have also been implicated in causing neurodegeneration. After years of intensive research, considerable evidence has accumulated that demonstrates an important role of these factors in the etiology of common neurodegenerative diseases. Despite the extensive efforts that have attempted to define the molecular mechanisms underlying neurodegeneration, many aspects of these pathologies remain elusive. However, in order to explore the therapeutic interventions directed towards treatment of neurodegenerative diseases, neuroscientists are now fully exploiting the data obtained from studies of these basic mechanisms that have gone awry. The novelty of these mechanisms represents a challenge to the identification of viable drug targets and biomarkers for early diagnosis of the diseases. In this paper, we are reviewing various aspects associated with the disease and the recent trends that may have an application for the treatment of the neurodegenerative disorders.
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Affiliation(s)
| | | | | | - Snober S. Mir
- Department of Biotechnology, Integral University, Kursi Road, Lucknow, Ultar Pradesh 226026, India
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Synthesis and molecular structure study of 3-methoxy-7α-methyl-6-oxa-9β,14β-estra-1,3,5(10)-trien-17-one in solution. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-1048-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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36
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Zhang N, Yin Y, Xu SJ, Wu YP, Chen WS. Inflammation & apoptosis in spinal cord injury. Indian J Med Res 2012; 135:287-96. [PMID: 22561613 PMCID: PMC3361863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Spinal cord injury (SCI) consists of a two-steps process involving a primary mechanical injury followed by an inflammatory process and apoptosis. Secondary insult is characterized by further destruction of neuronal and glial cells, and leads to expansion of the damage, so that the paralysis can extend to higher segments. With the identification of mechanisms that either promote or prevent neuronal inflammation and apoptosis come new approaches for preventing and treating neurodegenerative disorders. From a clinical perspective, this article discusses novel targets for the development of therapeutic agents that have the potential to protect the spinal cord from irreversible damage and promote functional recovery.
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Affiliation(s)
- Ning Zhang
- Department of Orthopaedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, PR of China
| | - Ying Yin
- Department of Orthopaedics, Institute of Clinical Research, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, PR of China
| | - Sheng-Jie Xu
- Department of Orthopaedics, Institute of Clinical Research, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, PR of China
| | - Yong-Ping Wu
- Department of Orthopaedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, PR of China
| | - Wei-Shan Chen
- Department of Orthopaedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, PR of China,Reprint requests: Dr Wei-Shan Chen, Department of Orthopaedics, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road, Hangzhou, PR of China, 310 009 e-mail:
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37
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Jiang CS, Guo XJ, Gong JX, Zhu TT, Zhang HY, Guo YW. Synthesis and biological evaluation of 21-arylidenepregnenolone derivatives as neuroprotective agents. Bioorg Med Chem Lett 2012; 22:2226-9. [PMID: 22357341 DOI: 10.1016/j.bmcl.2012.01.103] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Revised: 01/04/2012] [Accepted: 01/25/2012] [Indexed: 10/14/2022]
Abstract
A series of 21-arylidenepregnenolone derivatives and their corresponding epoxides were synthesized. The neuroprotective effects of these steroidal compounds against amyloid-β(25-35) (Aβ(25-35))- and hydrogen peroxide (H(2)O(2))-induced neurotoxicity in PC12 cells, and oxygen-glucose deprivation (OGD)-induced neurotoxicity in SH-SY5Y cells were evaluated. The bioassay results indicated that several 3β-pregn-21-benzylidene-20-one derivatives displayed potent in vitro neuroprotective effects in different screening models, for example, compounds 2b, 3a, 3b, and 3s showing significant activities against Aβ(25-35)-induced neurotoxicity in PC12 cells, 2b showing significant activities against H(2)O(2)-induced neurotoxicity in PC12 cells, and 2g, 3b, and 3e showing potent protection against OGD insult. The results suggested that introduction of an arylidene group into steroidal nucleus played an important role in neuroprotective activity, while the formation of epoxy group at C-5,6 could be also important for the neuroprotective activity in some degree. The pharmacological data reported here are helpful for the design of novel steroidal neuroprotective candidates.
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Affiliation(s)
- Cheng-Shi Jiang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Zhangjiang High-Tech Park, Shanghai, PR China
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Morozkina SN, Nikol’skaya SK, Starova GL, Selivanov SI, Shavva AG. New analogs of steroid estrogens. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2011. [DOI: 10.1134/s1070428011080203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
Estrogens have been shown to have protective effects on a wide range of cell types and animal models for many neurodegenerative diseases. The present study demonstrates the cytoprotective effects of 17β-estradiol (E2) and estrogen-like compounds in an in vitro model of Friedreich's ataxia (FRDA) using human donor FRDA skin fibroblasts. FRDA fibroblasts are extremely sensitive to free radical damage and oxidative stress, produced here using l-buthionine (S,R)-sulfoximine to inhibit de novo glutathione synthesis. We have shown that the protective effect of E2 in the face of l-buthionine (S,R)-sulfoximine -induced oxidative stress is independent of estrogen receptor-α, estrogen receptor-β or G protein-coupled receptor 30 as shown by the inability of either ICI 182,780 or G15 to inhibit the E2-mediated protection. These cytoprotective effects appear to be dependent on antioxidant properties and the phenolic structure of estradiol as demonstrated by the observation that all phenolic compounds tested were protective, whereas all nonphenolic compounds were inactive, and the observation that the phenolic compounds reduced the levels of reactive oxygen species, whereas the nonphenolic compounds did not. These data show for the first time that phenolic E2-like compounds are potent protectors against oxidative stress-induced cell death in FRDA fibroblasts and are possible candidate drugs for the treatment and prevention of FRDA symptoms.
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Affiliation(s)
- Timothy E Richardson
- Institute for Aging and Alzheimer’s Disease Research, Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, Fort Worth, Texas 76107, USA.
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Caceres LG, Uran SL, Zorrilla Zubilete MA, Romero JI, Capani F, Guelman LR. An early treatment with 17-β-estradiol is neuroprotective against the long-term effects of neonatal ionizing radiation exposure. J Neurochem 2011; 118:626-35. [PMID: 21631508 DOI: 10.1111/j.1471-4159.2011.07334.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ionizing radiations can induce oxidative stress on target tissues, acting mainly through reactive oxygen species (ROS). The aim of this work was to investigate if 17-β-estradiol (βE) was able to prevent hippocampal-related behavioral and biochemical changes induced by neonatal ionizing radiation exposure and to elucidate a potential neuroprotective mechanism. Male Wistar rats were irradiated with 5 Gy of X-rays between 24 and 48 h after birth. A subset of rats was subcutaneously administered with successive injections of βE or 17-α-estradiol (αE), prior and after irradiation. Rats were subjected to different behavioral tasks to evaluate habituation and associative memory as well as anxiety levels. Hippocampal ROS levels and protein kinase C (PKC) activity were also assessed. Results show that although βE was unable to prevent radiation-induced hippocampal PKC activity changes, most behavioral abnormalities were reversed. Moreover, hippocampal ROS levels in βE-treated irradiated rats approached control values. In addition, αE administered to irradiated animals was effective in preventing radiation-induced alterations. In conclusion, βE was able to counteract behavioral and biochemical changes induced in irradiated animals, probably acting through an antioxidant mechanism.
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Affiliation(s)
- Lucila G Caceres
- 1ª Cátedra de Farmacología, Facultad de Medicina, UBA, CEFYBO-CONICET, Buenos Aires, Argentina
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Differential Neuroprotection of Selective Estrogen Receptor Agonists against Autonomic Dysfunction and Ischemic Cell Death in Permanent versus Reperfusion Injury. Adv Pharmacol Sci 2011; 2011:976951. [PMID: 21738528 PMCID: PMC3124232 DOI: 10.1155/2011/976951] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Revised: 03/03/2011] [Accepted: 03/04/2011] [Indexed: 11/17/2022] Open
Abstract
In the present study, we tested the hypothesis that selective activation of estrogen receptor subtypes (ERα and ERβ) would be neuroprotective following ischemia and/or ischemia-reperfusion, as well as prevent the associated autonomic dysfunction. The selective ERα agonist, PPT, when administered 30 min prior to occlusion of the middle cerebral artery (pMCAO), resulted in a dose-dependent neuroprotection as measured 6 hours postpermanent MCAO, but not following 30 mins of MCAO followed by 5.5 hrs of reperfusion (I/R). In contrast, 30 min pretreatment with the selective ERβ agonist, DPN, resulted in a dose-dependent neuroprotection following I/R, but was not protective following pMCAO. Both drugs prevented the ischemia-induced autonomic dysfunction as measured by a decrease in the baroreceptor reflex sensitivity (BRS). The data presented here suggest a differential role of each ER subtype in targeting the mechanisms of cell death that occur in ischemia versus reperfusion injury.
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42
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Mechanisms of estrogens' dose-dependent neuroprotective and neurodamaging effects in experimental models of cerebral ischemia. Int J Mol Sci 2011; 12:1533-62. [PMID: 21673906 PMCID: PMC3111617 DOI: 10.3390/ijms12031533] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2010] [Revised: 02/10/2011] [Accepted: 02/22/2011] [Indexed: 02/08/2023] Open
Abstract
Ever since the hypothesis was put forward that estrogens could protect against cerebral ischemia, numerous studies have investigated the mechanisms of their effects. Despite initial studies showing ameliorating effects, later trials in both humans and animals have yielded contrasting results regarding the fundamental issue of whether estrogens are neuroprotective or neurodamaging. Therefore, investigations of the possible mechanisms of estrogen actions in brain ischemia have been difficult to assess. A recently published systematic review from our laboratory indicates that the dichotomy in experimental rat studies may be caused by the use of insufficiently validated estrogen administration methods resulting in serum hormone concentrations far from those intended, and that physiological estrogen concentrations are neuroprotective while supraphysiological concentrations augment the damage from cerebral ischemia. This evidence offers a new perspective on the mechanisms of estrogens’ actions in cerebral ischemia, and also has a direct bearing on the hormone replacement therapy debate. Estrogens affect their target organs by several different pathways and receptors, and the mechanisms proposed for their effects on stroke probably prevail in different concentration ranges. In the current article, previously suggested neuroprotective and neurodamaging mechanisms are reviewed in a hormone concentration perspective in an effort to provide a mechanistic framework for the dose-dependent paradoxical effects of estrogens in stroke. It is concluded that five protective mechanisms, namely decreased apoptosis, growth factor regulation, vascular modulation, indirect antioxidant properties and decreased inflammation, and the proposed damaging mechanism of increased inflammation, are currently supported by experiments performed in optimal biological settings.
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Abstract
Neurodegenerative diseases are characterized by neurodegenerative changes or apoptosis of neurons involved in networks, leading to permanent paralysis and loss of sensation below the site of the injury. Cell replacement therapy has provided the basis for the development of potentially powerful new therapeutic strategies for a broad spectrum of human neurological diseases. In recent years, neurons and glial cells have successfully been generated from stem cells, and extensive efforts by investigators to develop stem cell-based brain transplantation therapies have been carried out. We review here notable previously published experimental and preclinical studies involving stem cell-based cell for neurodegenerative diseases and discuss the future prospects for stem cell therapy of neurological disorders in the clinical setting. Steady and solid progress in stem cell research in both basic and preclinical settings should support the hope for development of stem cell-based cell therapies for neurological diseases.
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Affiliation(s)
| | | | | | - Ning Zhang
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86 57186021763; Fax: +86 57187022776
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Tehranipour M, Moghimi A. Neuroprotective effects of testosterone on regenerating spinal cord motoneurons in rats. J Mot Behav 2010; 42:151-5. [PMID: 20363715 DOI: 10.1080/00222891003697921] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Degeneration in the CNS and peripheral nervous system consists of degradation and phagocytosis of axons and their myelin sheath distal to the site of injury. Testosterone is a gonadal sex steroid hormone that plays an important role in CNS development. One of the lesser-known testosterone actions is neuroprotection. In the present study, the authors investigated the neuroprotectective effect of intracerebral ventricular injection of testosterone on the number of spinal motoneurons after sciatic nerve crush. In all, 32 male Wistar rats were divided to 4 groups (control, compression, compression + castration, compression + testosterone injections; n = 8). Four weeks after compression the lumber segments of spinal cord were sampled, processed, sectioned serially, and stained with toluidine blue (pH = 4.65) by using steriological quantitative technique (physical dissector), the number of alpha motoneurons in the right ventral horns of spinal cord were counted and compared between groups. Statistical analyses showed that testosterone injections (1 microl icv, 4 times, 1 week interval between injections) significantly (p < .05) reduced neuronal damage. These results indicated that testosterone has an obvious neuroprotective effect on lumbar spinal motoneurons.
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Affiliation(s)
- Maryam Tehranipour
- Department of Biology, Faculty of Science, Islamic Azad University, Mashhad Branch, Iran
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Alcohol withdrawal and brain injuries: beyond classical mechanisms. Molecules 2010; 15:4984-5011. [PMID: 20657404 PMCID: PMC6257660 DOI: 10.3390/molecules15074984] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 07/15/2010] [Accepted: 07/19/2010] [Indexed: 01/12/2023] Open
Abstract
Unmanaged sudden withdrawal from the excessive consumption of alcohol (ethanol) adversely alters neuronal integrity in vulnerable brain regions such as the cerebellum, hippocampus, or cortex. In addition to well known hyperexcitatory neurotransmissions, ethanol withdrawal (EW) provokes the intense generation of reactive oxygen species (ROS) and the activation of stress-responding protein kinases, which are the focus of this review article. EW also inflicts mitochondrial membranes/membrane potential, perturbs redox balance, and suppresses mitochondrial enzymes, all of which impair a fundamental function of mitochondria. Moreover, EW acts as an age-provoking stressor. The vulnerable age to EW stress is not necessarily the oldest age and varies depending upon the target molecule of EW. A major female sex steroid, 17β-estradiol (E2), interferes with the EW-induced alteration of oxidative signaling pathways and thereby protects neurons, mitochondria, and behaviors. The current review attempts to provide integrated information at the levels of oxidative signaling mechanisms by which EW provokes brain injuries and E2 protects against it.
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46
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The antioxidative effect of estradiol therapy on erythrocytes in women with preeclampsia. Reprod Toxicol 2010; 29:231-6. [DOI: 10.1016/j.reprotox.2009.11.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2009] [Revised: 10/25/2009] [Accepted: 11/02/2009] [Indexed: 01/05/2023]
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Prokai-Tatrai K, Bonds D, Prokai L. Simultaneous Measurement of 17β-Estradiol, 17α-Estradiol and Estrone by GC-Isotope Dilution MS/MS. Chromatographia 2010; 71:311-315. [PMID: 20625535 PMCID: PMC2901118 DOI: 10.1365/s10337-009-1441-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A convenient GC-MS/MS-based method was developed for the simultaneous measurement of 17β-estradiol, 17α-estradiol and estrone using liquid-liquid extraction, a single-step derivatization with N-(trimethylsilyl)imidazole and the corresponding deuterated estrogens as internal standards. Separation of these estrogens was achieved on a 50% phenyl polysilphenylene-siloxane bonded phase column. MS/MS response factors for the derivatized analytes and their corresponding internal standards were found to be practically identical. Therefore, analyte concentrations could be determined by multiplying the measured analyte to internal standard ion-current ratio with known molar concentration of the corresponding deuterated internal standards. Assay accuracies, determined from the analyses of quality control samples obtained by spiking known concentrations of analytes into charcoal-stripped human serum, were in the -11% to +14% range. Limits of quantitations were between 13 pg/mL and 21 pg/mL from this biological medium.
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Affiliation(s)
- Katalin Prokai-Tatrai
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107, USA;
- Department of Pharmacology and Neuroscience, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107, USA
| | - Darius Bonds
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107, USA;
| | - Laszlo Prokai
- Department of Molecular Biology and Immunology, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, TX 76107, USA;
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Picazo O, Becerril-Montes A, Huidobro-Perez D, Garcia-Segura LM. Neuroprotective Actions of the Synthetic Estrogen 17α-Ethynylestradiol in the Hippocampus. Cell Mol Neurobiol 2010; 30:675-82. [DOI: 10.1007/s10571-009-9490-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Accepted: 12/15/2009] [Indexed: 12/23/2022]
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Relationship between estradiol and antioxidant enzymes activity of ischemic stroke. J Biomed Biotechnol 2009; 2009:841468. [PMID: 19746169 PMCID: PMC2737135 DOI: 10.1155/2009/841468] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2009] [Revised: 07/05/2009] [Accepted: 07/24/2009] [Indexed: 11/18/2022] Open
Abstract
Some evidence suggests the neuroprotection of estrogen provided by the antioxidant activity of this compound. The main objective of this study was to determine the level of estradiol and its correlation with the activity of antioxidant enzymes, total antioxidant status and ferritin from ischemic stroke subjects. The study population consisted of 30 patients with acute ischemic stroke and 30 controls. There was no significant difference between estradiol in stroke and control group. The activity of superoxide dismutase and level of ferritin was higher in stroke compared with control group (P < .05, P < .001, resp.). There was no significant correlation between estradiol and glutathione peroxidase, glutathione reductase, catalase, total antioxidant status, and ferritin in stroke and control groups. We observed inverse correlation between estradiol with superoxide dismutase in males of stroke patients (r = -0.54, P = .029). Our results supported that endogenous estradiol of elderly men and women of stroke or control group has no antioxidant activity.
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50
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Role of protein phosphatases and mitochondria in the neuroprotective effects of estrogens. Front Neuroendocrinol 2009; 30:93-105. [PMID: 19410596 PMCID: PMC2835549 DOI: 10.1016/j.yfrne.2009.04.013] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 04/20/2009] [Accepted: 04/21/2009] [Indexed: 12/15/2022]
Abstract
In the present treatise, we provide evidence that the neuroprotective and mito-protective effects of estrogens are inexorably linked and involve the ability of estrogens to maintain mitochondrial function during neurotoxic stress. This is achieved by the induction of nuclear and mitochondrial gene expression, the maintenance of protein phosphatases levels in a manner that likely involves modulation of the phosphorylation state of signaling kinases and mitochondrial pro- and anti-apoptotic proteins, and the potent redox/antioxidant activity of estrogens. These estrogen actions are mediated through a combination of estrogens receptor (ER)-mediated effects on nuclear and mitochondrial transcription of protein vital to mitochondrial function, ER-mediated, non-genomic signaling and non-ER-mediated effects of estrogens on signaling and oxidative stress. Collectively, these multifaceted, coordinated action of estrogens leads to their potency in protecting neurons from a wide variety of acute insults as well as chronic neurodegenerative processes.
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