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Karaman E, Onder GO, Goktepe O, Karakas E, Mat OC, Bolat D, Koseoglu E, Tur K, Baran M, Ermis M, Balcioglu E, Yay A. Protective Effects of Boric Acid Taken in Different Ways on Experimental Ovarian İschemia and Reperfusion. Biol Trace Elem Res 2024; 202:2730-2743. [PMID: 37743417 DOI: 10.1007/s12011-023-03871-1] [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: 08/08/2023] [Accepted: 09/14/2023] [Indexed: 09/26/2023]
Abstract
Ovarian ischemia is a gynecological emergency that occurs as a result of ovarian torsion, affects women of reproductive age, and reduces ovarian reserve. The current study was designed to investigate the effect of boric acid taken in different ways on histopathological changes, autophagy, oxidative stress, and DNA damage caused by ischemia and reperfusion in the ovary of adult female rats. We established seven groups of 70 adult female rats: untreated control, intraperitoneal boric acid group (IpBA), oral boric acid group (OBA), ischemia/reperfusion group (ischemia/2 h reperfusion; OIR), ischemia/reperfusion and local boric acid group (OIR + LBA), ischemia/reperfusion and intraperitoneal boric acid group (OIR + IpBA), and ischemia/reperfusion and oral boric acid group (OIR + OBA). On the 31st day of the experimental procedure, both ovaries were harvested for histologic (hematoxylen and eosin and Masson trichrom), biochemical (ELISA and AMH, MDA, SOD, and CAT analyses), and comet evaluation. In the OIR group, hemorrhage, edema, inflammation, and diminished follicle reserve were seen in the ovary. Boric acid treatment reduced the ovarian ischemia/reperfusion damage, and the follicles exhibited similar morphological features to the control group. Moreover, boric acid treatment decreased the levels of Hsp70, NF-KB, COX-2, and CD31, which increased as a result of OIR. On the other hand, SCF and AMH levels, which decreased as a result of OIR, increased with boric acid treatment. The levels of autophagy markers (Beclin-1, LC3, and p62) reached values close to those of the control group. According to the biochemical findings, it was concluded that boric acid is also effective on oxidative stress, and the AMH level was particularly high in the OIR + OBA group, consistent with the immunohistochemical staining result. In addition, it was observed that the DNA damage caused by OIR reached values close to those of the control group, especially in the OBA after OIR. This study showed the therapeutic effects of boric acid on OIR injuries; thus, boric acid may be a potential therapeutic agent for ovarian protection and fertility preservation in cases that may cause ovarian torsion.
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Affiliation(s)
- Enes Karaman
- Department of Gynecology and Obstetrics, Savur Prof Dr Aziz Sancar District State Hospital, Mardin, Turkey
| | - Gozde Ozge Onder
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Ozge Goktepe
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Erol Karakas
- Department of Gynecology and Obstetrics, Kayseri State Hospital, Kayseri, Turkey
| | - Ozge Cengiz Mat
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
| | - Demet Bolat
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
| | - Eda Koseoglu
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
| | - Kardelen Tur
- Department of Biophysics, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
| | - Munevver Baran
- Department of Pharmaceutical Basic Science, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - Mustafa Ermis
- Experimental Researches and Application Center, Erciyes University, Kayseri, Turkey
| | - Esra Balcioglu
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey
| | - Arzu Yay
- Department of Histology and Embryology, Faculty of Medicine, Erciyes University, 38039, Kayseri, Turkey.
- Genome and Stem Cell Center (GENKOK), Erciyes University, Kayseri, Turkey.
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Zhang X, Wang G, Chen S. Boric Acid Alleviates Lipopolysaccharide-Induced Acute Lung Injury in Mice. Biol Trace Elem Res 2024:10.1007/s12011-024-04240-2. [PMID: 38789899 DOI: 10.1007/s12011-024-04240-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2024] [Accepted: 05/16/2024] [Indexed: 05/26/2024]
Abstract
Acute lung injury (ALI) poses a significant medical challenge due to its widespread occurrence and high mortality rates. Despite extensive efforts, current clinical interventions for ALI have shown limited success. Inflammation plays a central role within ALI progress, and boric acid (BA) has demonstrated anti-inflammatory properties both in vitro and in vivo. However, its potential to mitigate lipopolysaccharide (LPS)-induced ALI remains an area awaiting exploration in research. To bridge this research gap, we created a mouse model of ALI induced by intraperitoneal LPS injection. We employed a comprehensive set of evaluation criteria, including H&E staining, wet/dry ratio measurement, malondialdehyde (MDA)/superoxide dismutase (SOD) the oxidative stress-related biomarkers, assessment of alveolar edema, hemorrhage, inflammatory cell infiltration, and examination of thickened alveolar septum to quantify lung injury. Additionally, we measured inflammatory cytokine levels using ELISA and assessed Nrf2 and HO-1 expressions through western blotting and quantitative real-time PCR (RT-PCR). ER stress-related markers (GRP78, CHOP) were analyzed through western blot analysis. Our findings revealed that prophylactic treatment with BA effectively attenuated LPS-induced ALI, as supported by improved pathological alterations, decreased total protein concentration in bronchoalveolar lavage fluid (BALF), and reduced pulmonary edema. Furthermore, BA exhibited anti-inflammatory properties by suppressing inflammatory cytokines within the lung tissue. BA ingestion caused upregulation in SOD and a decrease in MDA contents in lung tissue homogenates. BA downregulated the levels of GRP78 and CHOP compared to the LPS group. Remarkably, BA also upregulated transcription and protein expression of Nrf2 and HO-1 compared to the LPS group. In conclusion, our study highlights BA's potential as a novel promising prophylactic agent for LPS-induced ALI, offering avenue for improving clinical management of this condition.
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Affiliation(s)
- Xiaomin Zhang
- Department of Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Guangyan Wang
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Shuangdong Chen
- Department of Anesthesiology, The First Affiliated Hospital of Wenzhou Medical University, Nanbaixiang Street, Ouhai District, Wenzhou, 325035, Zhejiang, China.
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Grams RJ, Santos WL, Scorei IR, Abad-García A, Rosenblum CA, Bita A, Cerecetto H, Viñas C, Soriano-Ursúa MA. The Rise of Boron-Containing Compounds: Advancements in Synthesis, Medicinal Chemistry, and Emerging Pharmacology. Chem Rev 2024; 124:2441-2511. [PMID: 38382032 DOI: 10.1021/acs.chemrev.3c00663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
Boron-containing compounds (BCC) have emerged as important pharmacophores. To date, five BCC drugs (including boronic acids and boroles) have been approved by the FDA for the treatment of cancer, infections, and atopic dermatitis, while some natural BCC are included in dietary supplements. Boron's Lewis acidity facilitates a mechanism of action via formation of reversible covalent bonds within the active site of target proteins. Boron has also been employed in the development of fluorophores, such as BODIPY for imaging, and in carboranes that are potential neutron capture therapy agents as well as novel agents in diagnostics and therapy. The utility of natural and synthetic BCC has become multifaceted, and the breadth of their applications continues to expand. This review covers the many uses and targets of boron in medicinal chemistry.
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Affiliation(s)
- R Justin Grams
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | | | - Antonio Abad-García
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
| | - Carol Ann Rosenblum
- Department of Chemistry and Virginia Tech Center for Drug Discovery, Virginia Tech, 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Andrei Bita
- Department of Pharmacognosy & Phytotherapy, Faculty of Pharmacy, University of Medicine and Pharmacy of Craiova, 2 Petru Rareş Street, 200349 Craiova, Romania
| | - Hugo Cerecetto
- Centro de Investigaciones Nucleares, Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400 Montevideo, Uruguay
| | - Clara Viñas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus UAB, 08193 Bellaterra, Spain
| | - Marvin A Soriano-Ursúa
- Academia de Fisiología y Sección de Estudios de Posgrado e Investigación, Escuela Superior de Medicina del Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, 11340 Mexico City, Mexico
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Paties Montagner G, Dominici S, Piaggi S, Pompella A, Corti A. Redox Mechanisms Underlying the Cytostatic Effects of Boric Acid on Cancer Cells-An Issue Still Open. Antioxidants (Basel) 2023; 12:1302. [PMID: 37372032 DOI: 10.3390/antiox12061302] [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: 05/05/2023] [Revised: 06/05/2023] [Accepted: 06/13/2023] [Indexed: 06/29/2023] Open
Abstract
Boric acid (BA) is the dominant form of boron in plasma, playing a role in different physiological mechanisms such as cell replication. Toxic effects have been reported, both for high doses of boron and its deficiency. Contrasting results were, however, reported about the cytotoxicity of pharmacological BA concentrations on cancer cells. The aim of this review is to briefly summarize the main findings in the field ranging from the proposed mechanisms of BA uptake and actions to its effects on cancer cells.
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Affiliation(s)
- Giulia Paties Montagner
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Silvia Dominici
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Simona Piaggi
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Alfonso Pompella
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
| | - Alessandro Corti
- Department of Translational Research NTMS, University of Pisa Medical School, 56126 Pisa, Italy
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Özdemir Ç, Arslan M, Küçük A, Yığman Z, Dursun AD. Therapeutic Efficacy of Boric Acid Treatment on Brain Tissue and Cognitive Functions in Rats with Experimental Alzheimer's Disease. Drug Des Devel Ther 2023; 17:1453-1462. [PMID: 37220543 PMCID: PMC10200114 DOI: 10.2147/dddt.s405963] [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: 03/03/2023] [Accepted: 05/06/2023] [Indexed: 05/25/2023] Open
Abstract
Introduction Oxidative stress has an important role in the pathophysiology of Alzheimer's disease (AD), the most common type of dementia. Boric acid (BA) contributes significantly to the protection of the brain by reducing lipid peroxidation and supporting antioxidant defense. We aimed to evaluate the therapeutic potential of BA treatment in AD rats. Materials and Methods Four groups were formed as Control (C), Alzheimer's (A), Alzheimer's + Boric acid (ABA), Boric acid (BA). Intracerebroventricular injection of Streptozotocin (STZ) was preferred to create an AD. After 4 weeks, BA was applied 3 times every other day. The Radial Arm Maze Test (RAMT) was used to evaluate memory and learning abilities. Biochemical and histopathological evaluations were made in the hippocampus. Results Initial RAMT inlet/outlet (I/O) numbers were similar. Two weeks after STZ injection, I/O numbers decreased in group A and ABA compared to group C and BA (p<0.05). After the second BA application, I/O numbers increased in the ABA group compared to the A group (p<0.05). In group A, PON-1, TOS and OSI levels were higher and TAS levels were lower than in groups BA and C. After BA treatment, PON-1 and OSI levels were lower in the ABA group than in the A group (p<0.05). Although there was an increase in TAS value and a decrease in TOS, this did not make a statistical difference. The thickness of the pyramidal cell in CA1 and the granular cell layers in the dentate gyrus, and the number of intact and degenerated neurons in the pyramidal cell layer were similar between the groups. Discussion Significant improvement in learning and memory abilities after BA application is promising for AD. Conclusion These results show that BA application positively affects learning and memory abilities, and reduces oxidative stress. More extensive studies are required to evaluate histopathological efficacy.
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Affiliation(s)
- Çağrı Özdemir
- Mamak State Hospital Department of Anesthesiology and Reanimation, Ankara, Turkey
| | - Mustafa Arslan
- Gazi University Faculty of Medicine Department of Anesthesiology and Reanimation, Ankara, Turkey
- Gazi University, Life Sciences Application and Research Center, Ankara, Turkey
- Gazi University, Laboratory Animal Breeding and Experimental Research Center (GÜDAM), Ankara, Turkey
| | - Ayşegül Küçük
- Kutahya Health Sciences University Faculty of Medicine, Department of Physiology, Kutahya, Turkey
| | - Zeynep Yığman
- Gazi University Faculty of Medicine, Department of Histology and Embryology, Ankara, Turkey
- Gazi University Neuroscience and Neurotechnology Center of Excellence (NÖROM), Ankara, Turkey
| | - Ali Doğan Dursun
- Atılım University Faculty of Medicine Department of Physiology, Ankara, Turkey
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Xu B, Dong F, Yang P, Wang Z, Yan M, Fang J, Zhang Y. Boric Acid Inhibits RANKL-Stimulated Osteoclastogenesis In Vitro and Attenuates LPS-Induced Bone Loss In Vivo. Biol Trace Elem Res 2023; 201:1388-1397. [PMID: 35397103 DOI: 10.1007/s12011-022-03231-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 04/04/2022] [Indexed: 02/07/2023]
Abstract
Boron and boric acid (BA) can promote osteogenic differentiation and reduce bone resorption, which controls bone growth and maintenance of bone tissue. It has been reported that BA activates PERK-eIF2α signaling to induce cytoplasmic stress granules and cell senescence in human prostate DU-145 cells. However, whether BA can affect osteoclasts formation and LPS-induced inflammatory bone loss, and the role of the PERK-eIF2α pathway in the process, remains unknown. In vitro, RAW264.7 cells were pre-treated with boric acid (BA, 1, 10, 100 μmol/L) for 4 h, and then incubated with receptor activator of nuclear factor-kappaB ligand (RANKL, 50 ng/mL) in the presence or absence of BA for 5 days. CCK-8 and tartrate-resistant acid phosphatase (TRAP) were used to examine cell viability, osteoclastogenesis, and bone resorption; quantitative real-time PCR was performed to examine mRNA levels of c-Fos, nuclear factor of activated T cells, cytoplasmic 1 (NFATc1), TRAP, and cathepsin K; western blotting was used to examine protein expressions of glucose-regulated protein 78 (GRP78), protein kinase R (PKR)-like endoplasmic reticulum kinase (PERK), phosphorylated PERK (p-PERK), eukaryotic initiation factor 2α (eIF2α), and phosphorylated eIF2α (p-eIF2α). In vivo, lipopolysaccharide (LPS)-induced bone loss model in mice was established, and micro-computed tomography (micro-CT) scanning, bone biochemical analysis, and osteoclastogenic cytokines were detected to evaluate the effect of BA on LPS-induced bone loss. In our vitro results showed that BA treatment for 5 days inhibited osteoclasts formation as well as osteoclastic bone resorption in a dose-dependent manner. The expression of osteoclasts marker genes c-Fos, NFATc1, TRAP, and cathepsin K were attenuated by BA. Immunoblotting analysis demonstrated that BA attenuated RANKL-induced PERK-eIF2α pathway activation. The in vivo data indicated that BA significantly prevented lipopolysaccharide (LPS)-induced bone loss. Our findings strongly suggest that BA may be a promising agent for the treatment of bone destructive diseases caused by excessive osteoclastogenesis.
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Affiliation(s)
- Bingbing Xu
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Fanhe Dong
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Pei Yang
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Zihan Wang
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Ming Yan
- School of Automation, Hangzhou Dianzi University, Xiasha Higher Education Zone, 1158 2nd Avenue, Hangzhou, 310018, People's Republic of China
| | - Jian Fang
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China
| | - Yun Zhang
- College of Medicine, Shaoxing University, Huancheng West Road 508, Shaoxing, 312000, People's Republic of China.
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Corti A, Dominici S, Piaggi S, Pompella A. Enhancement of ferroptosis by boric acid and its potential use as chemosensitizer in anticancer chemotherapy. Biofactors 2022; 49:405-414. [PMID: 36468437 DOI: 10.1002/biof.1919] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Accepted: 11/15/2022] [Indexed: 12/12/2022]
Abstract
Ferroptosis is a form of regulated cell death (RCD) characterized by intracellular iron ion accumulation and reactive oxygen species (ROS)-induced lipid peroxidation. Ferroptosis in cancer and ferroptosis-related anticancer drugs have recently gained interest in the field of cancer treatment. Boron is an essential trace element playing an important role in several biological processes. Recent studies have described contrasting effects of boric acid (BA) in cancer cells, ranging from protective/mitogenic to damaging/antiproliferative. Interestingly, boron has been shown to interfere with critical factors involved in ferroptosis-intracellular glutathione and lipid peroxidation in the first place. Thus, the present study was aimed to verify the ability of boron to modulate the ferroptotic process in HepG2 cells, a model of hepatocellular carcinoma. Our results indicate that-when used at high, pharmacological concentrations-BA can increase intracellular ROS, glutathione, and TBARS levels, and enhance ferroptosis induced by RSL3 and erastin. Also, high BA concentrations can directly induce ferroptosis, and such BA-induced ferroptosis can add to the cytotoxic effects of anticancer drugs sorafenib, doxorubicin and cisplatin. These observations suggest that BA could be exploited as a chemo-sensitizer agent in order to overcome cancer drug resistance in selected conditions. However, the possibility of reaching suitably high concentrations of BA in the tumor microenvironment will need to be further investigated.
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Affiliation(s)
- Alessandro Corti
- Department of Translational Research NTMS, University of Pisa Medical School, Pisa, Italy
| | - Silvia Dominici
- Department of Translational Research NTMS, University of Pisa Medical School, Pisa, Italy
| | - Simona Piaggi
- Department of Translational Research NTMS, University of Pisa Medical School, Pisa, Italy
| | - Alfonso Pompella
- Department of Translational Research NTMS, University of Pisa Medical School, Pisa, Italy
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Karaca U, Pinar SG, Savran M, Usta G, İlhan İ, Ozkaya D, Avci M. The Possible Protective Effect of Boric Acid in an Alkaline-Induced Corneal Neovascularization Rat Model. Biol Trace Elem Res 2022; 200:5127-5133. [PMID: 34988929 DOI: 10.1007/s12011-022-03094-w] [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: 10/20/2021] [Accepted: 01/01/2022] [Indexed: 11/30/2022]
Abstract
It is known that boric acid (BA) exerts it antioxidant and anti-inflammatory effects by activating the activating transcription factor 4 (ATF4) and nuclear factor-erythroid 2-related factor 2 (Nrf2) pathway. This pathway has been reported to control antioxidant status in the eye. The aim of this study was to investigate the possible preventive effects of boric acid administration on oxidative damage and corneal neovascularization (CNV). Sixteen adult female Wistar albino rats were divided into two groups: (I) control (n = 8); the CNV model was applied to the right eye of the rats, and the left eyes were used as healthy controls. (II) CNV + BA (n = 8): After the CNV model was applied to the right eyes, a single subconjunctival dose (0.05 mL) of 0,018 g/mL BA was injected into the right and left eyes of the rats. Biochemical, histopathological, and immunohistochemical analyses were performed. Moderate VEGF positivity was observed in the vessels of the CNV group, a decrease in vessel proliferation, and weak VEGF positivity in the CNV + BA group. The TAS level in the CNV + BA group was significantly higher than that in the other groups. The TOS level was significantly higher in all groups than it is in the control group. The OSI value was increased in all groups when compared to the control group, but only the CNV and BA groups were statistically significant. BA not only reduced alkaline-induced corneal damage histologically but also showed a protective effect on oxidative stress biochemically.
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Affiliation(s)
- Umut Karaca
- Department of Ophthalmology, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey.
| | - Sıla Gulbag Pinar
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Isparta Suleyman Demirel University, Isparta, Turkey
| | - Mehtap Savran
- Department of Pharmacology, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey
| | - Gulsah Usta
- Department of Ophthalmology, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey
| | - İlter İlhan
- Department of Biochemistry, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey
| | - Dilek Ozkaya
- Department of Ophthalmology, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey
| | - Mesut Avci
- Department of Ophthalmology, Faculty of Medicine, Isparta Suleyman Demirel University, Isparta, Turkey
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Kahraman E, Göker E. Boric acid exert anti-cancer effect in poorly differentiated hepatocellular carcinoma cells via inhibition of AKT signaling pathway. J Trace Elem Med Biol 2022; 73:127043. [PMID: 35868168 DOI: 10.1016/j.jtemb.2022.127043] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 05/31/2022] [Accepted: 07/15/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND The possible anti-cancer properties of boron, a trace element for humans, have been demonstrated in various experimental and epidemiological studies, although the effects of boron on liver cancer are unclear. In the present study we evaluate the effects of boric acid on the cell lines of hepatocellular carcinoma (HCC) of the liver, as the leading form of liver cancer, for which a poorly-differentiated HCC cell line (Mahlavu cell line) was used. METHODS The anti-cancer effect of boric acid was investigated with a cell viability assay, apoptosis analysis, cell migration analysis, cell morphology analysis, colony formation assay and 3D cell culture techniques. Also, the effect of boric acid on the AKT signaling pathway was determined through a western blot analysis. RESULTS Boric acid was found to reduce cell viability in a dose- and time-dependent manner, and decreased survival, colony formation ability, migration capability and HCC cell tumor spheroid growth in HCC cell lines, while also inducing apoptosis, autophagy and morphological alteration. Furthermore, boric acid inhibited AKT phosphorylation, and anticancer biological responses in HCC cells were observed only in cells in which AKT phosphorylation was suppressed by boric acid. CONCLUSION Our results suggest that boric acid might be a promising therapeutic candidate in hepatocellular carcinoma via the inhibition of AKT signaling pathway.
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Affiliation(s)
- Erkan Kahraman
- Ege University, Research and Application Center of Individualized Medicine, Izmir, Turkey; Ege University, Atatürk Vocational School of Health Services, Izmir, Turkey.
| | - Erdem Göker
- Ege University, Research and Application Center of Individualized Medicine, Izmir, Turkey; Ege University, Faculty of Medicine, Medical Oncology, Izmir, Turkey.
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Sevimli M, Bayram D, Özgöçmen M, Armağan I, Semerci Sevimli T. Boric acid suppresses cell proliferation by TNF signaling pathway mediated apoptosis in SW-480 human colon cancer line. J Trace Elem Med Biol 2022; 71:126958. [PMID: 35219976 DOI: 10.1016/j.jtemb.2022.126958] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 02/18/2022] [Indexed: 12/26/2022]
Abstract
BACKGROUND/AIM Colon cancer is one of the most common cancers. Treatment success and survival rates are not high enough with current approaches. Therefore, there is a need to develop new agents and treatment methods. Boric acid is the most frequently observed form of boron. Some epidemiological data suggest that environmental exposure to boric acid reduces the incidence of prostate cancer in men, cervical and lung cancers in women. Experimental studies show, boric acid reduces cell proliferation and stimulates apoptosis in some prostate, melanoma, breast cancer cell lines. In this study, it was investigated whether boric acid could be a new candidate molecule that could be used in the treatment of colon cancer. MATERIALS AND METHODS The effects of boric acid on human colon adenocarcinoma cell line SW-480 were investigated with BrdU, TUNEL, Caspase-3, and AIF immunohistochemical studies in both 2D and 3D culture systems. In addition, a qRT-PCR study was carried out to determine the expression changes in key genes that take part in apoptosis. RESULTS We observed that boric acid suppresses cell proliferation and induces apoptosis both in 2D and 3D culture conditions. In addition, as a result of qRt-PCR studies, it was revealed that the observed apoptotic process was related to the TNF signaling pathway. CONCLUSION Boric acid can be considered as a potential anti-cancer agent candidate for colon cancer treatment. DATA AVAILABILITY All data generated or analyzed during this study are included in this published article.
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Affiliation(s)
- Murat Sevimli
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey.
| | - Dilek Bayram
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey
| | - Meltem Özgöçmen
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey
| | - Ilkay Armağan
- Suleyman Demirel University, Faculty of Medicine, Department of Histology and Embryology, Isparta, Turkey
| | - Tuğba Semerci Sevimli
- Eskisehir Osmangazi University, Institue of Health Sciences, Department of Stem Cell, Eskisehir, Turkey; Eskisehir Osmangazi University, Cellular Therapy and Stem Cell Production Application and Research Center (ESTEM), Eskisehir, Turkey
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Yildirim C, Cevik S, Yamaner H, Orkmez M, Eronat O, Bozdayı MA, Erdem M. Boric acid improves the behavioral, electrophysiological and histological parameters of cisplatin-induced peripheral neuropathy in rats. J Trace Elem Med Biol 2022; 70:126917. [PMID: 34963081 DOI: 10.1016/j.jtemb.2021.126917] [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: 09/21/2021] [Revised: 11/24/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022]
Abstract
Boric acid (BA) has been used in many diseases because it increases the amount of reduced glutathione in the body and reduces oxidative damage. This study aims to investigate the effects of boric acid in cisplatin-induced neuropathy, in which oxidative stress is also effective in its pathophysiology. In this study, 8-10 weeks old, 170-190 g Wistar Albino rats were used. Each group contained seven rats (n = 35). Experimental groups consist of control, sham, neuropathy, treatment, and boric acid groups. For the neuropathy model, a single dose of cisplatin (3 mg/kg, i.p) was administered once a week for five weeks, and for the treatment group, boric acid was administered daily (100 mg/kg, intragastric) for five weeks. After drug administration, the rotarod test to evaluate motor performance, the tail-flick and hot/cold plate tests to evaluate sensory conduction states, the von Frey filament test to evaluate the mechanical allodynia, and the adhesive removal test to assess sensorimotor function were performed. The sciatic nerve's motoric conduction velocity was also assessed electrophysiologically. Oxidative stress parameters were also assessed biochemically in sciatic nerve tissue and serum. Hematoxylin and eosin staining was used to evaluate the sciatic nerve tissue histopathologically. The motor conduction velocity of the sciatic nerve, impaired by cisplatin, was increased considerably by boric acid (p < 0.05). It also reduced the latency time of the compound muscle action potential (CMAP), which was increased by cisplatin. (p < 0.05). The von Frey filament test results demonstrated increased pain sensitivity of the cisplatin group increased, and mechanical allodynia was observed. Boric acid significantly alleviated this condition (p < 0.05). In the cold plate, adhesive removal, and rotarod tests, boric acid attenuated the adverse effects of cisplatin (p < 0.05). Biochemically, BA reduced the level of MDA, which was raised by cisplatin, and significantly increased the level of SOD, which was lowered by cisplatin (p < 0.05). Histopathologically; BA reduced neuronal degeneration and vacuolization caused by cisplatin. As a consequence, it has been determined that boric acid alleviates the adverse effects of cisplatin. BA reduced the destructive effect of cisplatin by reducing oxidative stress, and this effect was verified electrophysiologically, behaviorally, and histopathologically.
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Affiliation(s)
- Caner Yildirim
- Gaziantep University, Faculty of Medicine, Department of Physiology, Gaziantep, Turkey.
| | - Sena Cevik
- Gaziantep University, Faculty of Medicine, Department of Physiology, Gaziantep, Turkey.
| | - Hatice Yamaner
- Gaziantep University, Faculty of Medicine, Department of Physiology, Gaziantep, Turkey.
| | - Mustafa Orkmez
- Gaziantep University, Faculty of Medicine, Department of Medical Biochemistry, Gaziantep, Turkey.
| | - Omer Eronat
- Gaziantep University, Faculty of Medicine, Department of Pathology, Gaziantep, Turkey.
| | - Mehmet Akif Bozdayı
- Gaziantep University, Faculty of Medicine, Department of Medical Biochemistry, Gaziantep, Turkey.
| | - Mehmet Erdem
- Gaziantep University, Vocational School of Health Services, Gaziantep, Turkey.
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Hacioglu C, Kar F, Kar E, Kara Y, Kanbak G. Effects of Curcumin and Boric Acid Against Neurodegenerative Damage Induced by Amyloid Beta (1-42). Biol Trace Elem Res 2021; 199:3793-3800. [PMID: 33237490 DOI: 10.1007/s12011-020-02511-2] [Citation(s) in RCA: 5] [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: 10/22/2020] [Accepted: 11/23/2020] [Indexed: 01/01/2023]
Abstract
Synaptosomes are used as an ex vivo model in the investigation of neuronal transmission and neurodegenerative processes. In this study, we aimed to determine the protective effects of boric acid (BA) and curcumin, which have antioxidant and anti-inflammatory properties, on Aβ1-42 induced neurodegenerative damage. Synaptosomes obtained from the rat cerebral cortex were divided into five groups: control, 10 μM Aβ1-42, 10 μM Aβ1-42 + 25 mM BA, 10 μM Aβ1-42 + 10 μM curcumin, and 10 μM Aβ1-42 + 25 mM BA+10 μM curcumin. Synaptosomes treated with Aβ1-42 caused a significant decline in synaptophysin levels and increase in malondialdehyde (MDA) levels, acetylcholinesterase (AChE) activities, DNA fragmentation values, and nitric oxide (NO) levels compared with the control group (P < 0.01). Synaptosomes treated with BA showed a significant reduction in MDA and NO levels against Aβ1-42 exposure (P < 0.01). In addition, curcumin treatment has been found to cause a significant reduction in AChE activities and MDA levels in synaptosomes (P < 0.05). Co-administration of BA and curcumin on synaptosomes exposed to Aβ1-42 resulted in a significant decrease in DNA fragmentation values, MDA levels, and AChE activities. Curcumin and BA + curcumin combination showed an enhancement in synaptophysin levels of Aβ1-42-induced synaptosomes (P < 0.01). The results showed that BA and curcumin had protective effects on rat brain synaptosomes against Aβ1-42 exposure. BA and curcumin treatment can have abilities to prevent the alterations of the cholinergic system and inhibit oxidative stress in the cerebral cortex synapses of Aβ1-42 exposed.
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Affiliation(s)
- Ceyhan Hacioglu
- Department of Medical Biochemistry, Faculty of Medicine, Duzce University, Duzce, Turkey.
| | - Fatih Kar
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Ezgi Kar
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Yakup Kara
- Department of Chemistry, Faculty of Science, Karadeniz Technical University, Trabzon, Turkey
| | - Gungor Kanbak
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
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Cabus U, Secme M, Kabukcu C, Cil N, Dodurga Y, Mete G, Fenkci IV. Boric acid as a promising agent in the treatment of ovarian cancer: Molecular mechanisms. Gene 2021; 796-797:145799. [PMID: 34175401 DOI: 10.1016/j.gene.2021.145799] [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: 01/18/2021] [Revised: 05/10/2021] [Accepted: 06/22/2021] [Indexed: 11/30/2022]
Abstract
PURPOSE The aim of this study is to determine the therapeutic effects of boric acid cell proliferation, invasion, migration, colony formation, cell cycle and apoptosis mechanisms in ovarian cancer cell line under in vitro conditions. METHODS MDAH-2774 ovarian cancer cells were employed. Real-time PCR test was used to investigate changes in genes and proteins of cell cycle and apoptosis and identified miRNAs under the addition of boric acid. The apoptosis rates were calculated by TUNEL assay. Matrigel invasion, colony formation and Wound healing tests were used to determine invasion and migration. Oxidative stress index value was calculated for oxidative stress. RESULTS Boric acid inhibited cell proliferation, invasion, migration and colony formation, but induces apoptosis and oxidative stress. Also, the expression of miRNA-21, miRNA-200a, miRNA-130a and mi-RNA-224 (which are indicators of poor prognosis of ovarian cancer) decreased significantly. CONCLUSION The potential of boric acid as a natural molecule may supports its effectiveness in reducing adverse effects arising from conventional ovarian cancer treatments.
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Affiliation(s)
- Umit Cabus
- Department of Obstetrics and Gynecology, Faculty of Medicine, Pamukkale University, Denizli, Turkey.
| | - Mucahit Secme
- Department of Medical Biology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Cihan Kabukcu
- Department of Obstetrics and Gynecology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Nazli Cil
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Yavuz Dodurga
- Department of Medical Biology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Gulcin Mete
- Department of Histology and Embryology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
| | - Ibrahim Veysel Fenkci
- Department of Obstetrics and Gynecology, Faculty of Medicine, Pamukkale University, Denizli, Turkey
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Tombuloglu A, Copoglu H, Aydin-Son Y, Guray NT. In vitro effects of boric acid on human liver hepatoma cell line (HepG2) at the half-maximal inhibitory concentration. J Trace Elem Med Biol 2020; 62:126573. [PMID: 32534377 DOI: 10.1016/j.jtemb.2020.126573] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 05/18/2020] [Accepted: 05/26/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Boron is a prominent part of the human diet and one of the essential trace elements for humans. Dietary boron is mostly transformed into boric acid within the body and has been associated with desirable health outcomes. Non-dietary resources of boron, such as boron-based drugs and occupational exposure, might lead to excessive boron levels in the blood and provoke health adversities. The liver might be particularly sensitive to boron intake with ample evidence suggesting a relation between boron and liver function, although the underlying molecular processes remain largely unknown. METHODS In order to better understand boron-related metabolism and molecular mechanisms associated with a cytotoxic level of boric acid, the half-maximal inhibitory concentration (IC50) of boric acid for the hepatoma cell line (HepG2) was determined using the XTT assay. Cellular responses followed by boric acid treatment at this concentration were investigated using genotoxicity assays and microarray hybridizations. Enrichment analyses were carried out to find out over-represented biological processes using the list of differentially expressed genes identified within the gene expression analysis. RESULTS DNA breaks were detected in HepG2 cells treated with 24 mM boric acid, the estimated IC50-level of boric acid. On the other hand, pleiotropic transcriptomic effects, including cell cycle arrest, DNA repair, and apoptosis as well as altered expression of Phase I and Phase II enzymes, amino acid metabolism, and lipid metabolism were discerned in microarray analyses. CONCLUSION HepG2 cells treated with a growth-inhibitory concentration of boric acid for 24 h exhibited a senescence-like transcriptomic profile along with DNA damage. Further studies might help in understanding the concentration-dependent effects and mechanisms of boric acid.
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Affiliation(s)
- Aysegul Tombuloglu
- Middle East Technical University, Graduate School of Informatics, Health Informatics Department, Ankara, Turkey
| | - Hulya Copoglu
- Middle East Technical University, Graduate School of Arts and Sciences, Department of Biological Sciences, Ankara, Turkey
| | - Yesim Aydin-Son
- Middle East Technical University, Graduate School of Informatics, Health Informatics Department, Ankara, Turkey
| | - N Tulin Guray
- Middle East Technical University, Graduate School of Arts and Sciences, Department of Biological Sciences, Ankara, Turkey.
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15
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Oyeyinka BO, Afolayan AJ. Potentials of Musa Species Fruits against Oxidative Stress-Induced and Diet-Linked Chronic Diseases: In Vitro and In Vivo Implications of Micronutritional Factors and Dietary Secondary Metabolite Compounds. Molecules 2020; 25:E5036. [PMID: 33142997 PMCID: PMC7663138 DOI: 10.3390/molecules25215036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 09/10/2020] [Accepted: 09/23/2020] [Indexed: 12/12/2022] Open
Abstract
Nutritional quality and the well-being of the body system are directly linked aspects of human survival. From the unborn foetus to adulthood, the need for sustainable access to micronutrient-rich foods is pertinent and the global consumption of banana and plantain fruits, in effect, contributes to the alleviation of the scourge of malnutrition. This review is particularly aimed at evaluating the pharmacological dimensions through the biological mechanisms of Musa fruits in the body, which represent correlations with their constituent micronutrient factors and dietary polyphenolic constituents such as minerals, vitamin members, anthocyanins, lutein, α-,β- carotenes, neoxanthins and cryptoxanthins, epi- and gallo catechins, catecholamines, 3-carboxycoumarin, β-sitosterol, monoterpenoids, with series of analytical approaches for the various identified compounds being highlighted therein. Derivative value-products from the compartments (flesh and peel) of Musa fruits are equally highlighted, bringing forth the biomedicinal and nutritional relevance, including the potentials of Musa species in dietary diversification approaches.
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Affiliation(s)
| | - Anthony Jide Afolayan
- Medicinal Plants and Economic Development (MPED) Research Centre, Department of Botany, University of Fort Hare, Alice 5700, South Africa;
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16
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Hacioglu C, Kar F, Kacar S, Sahinturk V, Kanbak G. High Concentrations of Boric Acid Trigger Concentration-Dependent Oxidative Stress, Apoptotic Pathways and Morphological Alterations in DU-145 Human Prostate Cancer Cell Line. Biol Trace Elem Res 2020; 193:400-409. [PMID: 31066018 DOI: 10.1007/s12011-019-01739-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 04/17/2019] [Indexed: 12/21/2022]
Abstract
Boric acid is known to regulate the proliferation of cancer cells. Prostate cancer is among the types of cancer with high mortality in men. There are a few numbers of studies investigating the effects of boric acid on prostate cancer cells. The objective of the present study was to assess the effects of boric acid at concentrations higher than that can be achieved in blood by dietary intake on DU-145 human prostate cancer cells for 24 h. Firstly, we determined the cytotoxic activity of boric acid (0 to 12.5 mM) on DU-145 human prostate cancer cells by using 3-(4, 5-dimethylthiazol, 2-yl)-2, 5-diphenyl tetrazolium bromide (MTT) and defined the IC50 concentration of boric acid. Then, by employing the doses found in MTT, the levels of antioxidant-oxidant molecules and apoptotic proteins were measured and morphological changes were evaluated. We have concluded that boric acid caused oxidative stress, inhibition of cell growth, apoptosis, and morphological alterations in a concentration-dependent manner in DU-145 cells. Furthermore, treatments with increasing boric acid concentrations decreased the antioxidant levels in cells. We actually revealed that boric acid, known as an antioxidant, may prevent cell proliferation by acting as an oxidant in certain doses. Although the high IC50 concentration of boric acid is perceived to be negative, we think it provides important background for subsequent studies.
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Affiliation(s)
- Ceyhan Hacioglu
- Department of Medical Biochemistry, Faculty of Medicine, Duzce University, Duzce, Turkey.
| | - Fatih Kar
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Sedat Kacar
- Department of Histology and Embryology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Varol Sahinturk
- Department of Histology and Embryology, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
| | - Gungor Kanbak
- Department of Medical Biochemistry, Faculty of Medicine, Eskisehir Osmangazi University, Eskisehir, Turkey
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Białek M, Czauderna M, Krajewska K, Przybylski W. Selected physiological effects of boron compounds for animals and humans. A review. JOURNAL OF ANIMAL AND FEED SCIENCES 2019. [DOI: 10.22358/jafs/114546/2019] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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18
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Geyikoglu F, Koc K, Colak S, Erol HS, Cerig S, Yardimci BK, Cakmak O, Dortbudak MB, Eser G, Aysin F, Ozek NS, Yildirim S. Propolis and Its Combination with Boric Acid Protect Against Ischemia/Reperfusion-Induced Acute Kidney Injury by Inhibiting Oxidative Stress, Inflammation, DNA Damage, and Apoptosis in Rats. Biol Trace Elem Res 2019; 192:214-221. [PMID: 30783919 DOI: 10.1007/s12011-019-1649-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 01/18/2019] [Indexed: 12/13/2022]
Abstract
Ischemia reperfusion (I/R) injury which causes kidney dysfunction is one of the most studied diseases directly linked to oxidative stress. In this regard, it is important to protect cells against damage by inducing antioxidant response. Herein, we aimed to evaluate the therapeutic roles and possible mechanisms of propolis and boric acid in kidney I/R injury based on relevant basic research and clinical studies. Sprague-Dawley rats were subjected to 50 min of ischemia followed by 3 h of reperfusion. Animals were randomly divided into a control group (the abdominal wall was just opened and closed), an I/R injury group, the propolis intervention group (200 mg/kg, intragastric administration, 1 h before ischemia), boric acid intervention group (14 mg/kg, intragastric administration 1 h before ischemia), and the propolis + boric acid intervention group (intragastric administration 1 h before ischemia). Kidney function, the antioxidant defensive system, and renal damage were assessed. In addition, the oxidative stress and inflammatory status were estimated in renal tissue. Furthermore, DNA damageand apoptosis were detected by immunohistochemistry. When compared with I/R group, propolis alone and especially propolis + boric acid groups significantly improved functional parameters. While the antioxidant response was increased, renal injury size and apoptosis were significantly decreased in both groups. Also, the MDA and TNF-α levels besides the 8-OHdG formation were downregulated. According to these outcomes, it can be said that especially propolis together with boric acid ameliorates kidney injury caused by I/R through acting as an antioxidant, anti-inflammatory, and antiapoptotic agent. In conclusion, propolis alone and its combination with boric acid could be developed as therapeutic agents against serious renal I/R injuries.
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Affiliation(s)
- Fatime Geyikoglu
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Kubra Koc
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey.
| | - Suat Colak
- Department of Biology, Uzumlu Vocational, Erzincan University, Erzincan, Turkey
| | - Huseyin Serkan Erol
- Department of Biochemistry, Faculty of Veterinary, Ataturk University, Erzurum, Turkey
| | - Salim Cerig
- Department of Biotechnology, Faculty of Science, Bartin University, Bartin, Turkey
| | - Berna Kavakcioglu Yardimci
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, Izmir, Turkey
| | - Ozge Cakmak
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
| | | | - Gizem Eser
- Department of Pathology, Faculty of Veterinary, Ataturk University, Erzurum, Turkey
| | - Ferhunde Aysin
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
- East Anatolian High Technology Research and Application Center (DAYTAM), Ataturk University, Erzurum, Turkey
| | - Nihal Simsek Ozek
- Department of Biology, Faculty of Science, Ataturk University, Erzurum, Turkey
- East Anatolian High Technology Research and Application Center (DAYTAM), Ataturk University, Erzurum, Turkey
| | - Serkan Yildirim
- Department of Chemistry, Faculty of Science, Dokuz Eylül University, Izmir, Turkey
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19
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Altinoz MA, Topcu G, Elmaci İ. Boron's neurophysiological effects and tumoricidal activity on glioblastoma cells with implications for clinical treatment. Int J Neurosci 2019; 129:963-977. [PMID: 30885023 DOI: 10.1080/00207454.2019.1595618] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Purpose: To define the actions of boron on normal neurophysiology and glioblastoma growth. Materials and Methods: PubMed and other relevant databases were searched. Results: Discovery of novel boron compounds in treatment of glioblastoma is being actively investigated, but the majority of such studies is focused on the synthesis of boron compounds as sensitizers to Boron Neutron Capture Therapy (BNCT). Nonetheless, the translational functionality of boron compounds is not limited to BNCT as many boron compounds possess direct tumoricidal activity and there is substantial evidence that certain boron compounds can cross the blood-brain barrier. Moreover, boron-containing compounds interfere with several tumorigenic pathways including intratumoral IGF-I levels, molybdenum Fe-S containing flavin hydroxylases, glycolysis, Transient Receptor Potential (TRP) and Store Operated Calcium Entry (SOCE) channels. Conclusions: Boron compounds deserve to be studied further in treatment of systemic cancers and glioblastoma due to their versatile antineoplastic functions.
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Affiliation(s)
- Meric A Altinoz
- Department of Medical Biochemistry, Acibadem University , Istanbul , Turkey.,Department of Psychiatry, Maastricht University , Holland , Turkey
| | - Gulacti Topcu
- Department of Pharmacognosy & Phytochemistry Faculty of Pharmacy, Bezmialem Vakif University , Istanbul , Turkey
| | - İlhan Elmaci
- Department of Neurosurgery, Acibadem Hospital , Istanbul , Turkey
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20
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Coulibaly FS, Alnafisah AS, Oyler NA, Youan BBC. Direct and Real-Time Quantification Of Bortezomib Release From Alginate Microparticles Using Boron (11B) Nuclear Magnetic Resonance Spectroscopy. Mol Pharm 2018; 16:967-977. [DOI: 10.1021/acs.molpharmaceut.8b00873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fohona S. Coulibaly
- Laboratory of Future Nanomedicines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri—Kansas City, 2464 Charlotte, Kansas City, Missouri 64108, United States
| | - Abrar S. Alnafisah
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Nathan A. Oyler
- Department of Chemistry, University of Missouri—Kansas City, 5100 Rockhill Road, Kansas City, Missouri 64110, United States
| | - Bi-Botti C. Youan
- Laboratory of Future Nanomedicines and Theoretical Chronopharmaceutics, Division of Pharmaceutical Sciences, School of Pharmacy, University of Missouri—Kansas City, 2464 Charlotte, Kansas City, Missouri 64108, United States
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21
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Yang W, Han GH, Shin HY, Lee EJ, Cho H, Chay DB, Kim JH. Combined treatment with modulated electro-hyperthermia and an autophagy inhibitor effectively inhibit ovarian and cervical cancer growth. Int J Hyperthermia 2018; 36:9-20. [PMID: 30428738 DOI: 10.1080/02656736.2018.1528390] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
PURPOSE Modulated electro-hyperthermia (mEHT), known as oncothermia, is an anticancer therapy that induces radiofrequency thermal damage to the cancer tissues. This study aimed to evaluate the potential effectiveness of mEHT as a therapeutic tool in ovarian and cervical cancer. MATERIALS AND METHODS We used both tumor-bearing mice and ovarian and cervical OVCAR-3, SK-OV-3, HeLa and SNU-17 cancer cell lines to investigate the effects of mEHT in vivo and in vitro, respectively, and determine whether it was enhanced by cotreatment with an autophagy inhibitor. RESULTS We discovered that phosphorylation of p38, a stress-dependent kinase, was induced at the Thr180/Tyr182 residue in cancer cells exposed to mEHT. Apoptotic markers such as cleaved caspase-3 and poly-ADP ribose polymerase (PARP) were increased in OVCAR-3 and SNU-17 cells. Fluorescence-activated cell sorting (FACS) analysis showed a significant increase in the population of sub-G1 mEHT-exposed cells, which are dying and apoptotic cells. mEHT also reduced both weight and volume of xenograft tumors in mice transplanted with ovarian and cervical cancer cells and patient-derived cancer tissues. We determined that mEHT-induced cellular damage recovery was mediated by autophagy and, therefore, expectedly, cotreatment with mEHT and 3-methyladenine (3-MA), an autophagy inhibitor, more effectively inhibited cancer cell growth than individual treatment did. CONCLUSIONS mEHT treatment alone was sufficient to inhibit cancer growth, while a combined treatment with mEHT and an autophagy inhibitor amplified this inhibition effect.
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Affiliation(s)
- Wookyeom Yang
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Gwan Hee Han
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Ha-Yeon Shin
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Eun-Ju Lee
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Hanbyoul Cho
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Doo Byung Chay
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
| | - Jae-Hoon Kim
- a Department of Obstetrics and Gynecology, Gangnam Severance Hospital , Yonsei University College of Medicine , Seoul , Republic of Korea
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22
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Bozkurt H, Kuru Bektaşoğlu P, Borekci A, Öztürk ÖÇ, Kertmen H, Eğilmez R, Yüce MF, Gürer B. Antifibrotic Effect of Boric Acid in Rats with Epidural Fibrosis. World Neurosurg 2018; 122:e989-e994. [PMID: 30399469 DOI: 10.1016/j.wneu.2018.10.187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Revised: 10/25/2018] [Accepted: 10/27/2018] [Indexed: 10/27/2022]
Abstract
BACKGROUND Epidural fibrosis is a major problem after spine surgery, with some patients having recurrent symptoms secondary to excessive formation of scar tissue resulting in neurologic compression. We used a rat laminectomy model to determine if topical application of boric acid could be helpful in the prevention of epidural fibrosis. METHODS Rats were randomly assigned to 2 control and 2 experimental groups (n = 8 for each group). The negative control group received no surgery, and the positive control group underwent laminectomy only. Experimental groups were classified according to the study agents applied onto the dura mater after laminectomy at the L3 level: 2.5% boric acid solution and 5% boric acid solution. The extent of epidural fibrosis was assessed 4 weeks later macroscopically and histopathologically. RESULTS Boric acid reduced epidural fibrosis in rats after laminectomy. The effect of 5% boric acid solution was more pronounced (P < 0.05) compared with the 2.5% solution. CONCLUSIONS The antifibrotic effect of boric acid solution for the prevention of epidural fibrosis suggests that boric acid should be further evaluated in future studies for the prevention of epidural fibrosis.
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Affiliation(s)
- Hüseyin Bozkurt
- Department of Neurosurgery, Sivas Cumhuriyet University School of Medicine, Sivas, Turkey
| | - Pınar Kuru Bektaşoğlu
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey; Department of Physiology, Marmara University School of Medicine, Istanbul, Turkey.
| | - Ali Borekci
- Department of Neurosurgery, Sancaktepe Şehit Prof.Dr. İlhan Varank Education and Research Hospital, Turkish Ministry of Health, Istanbul, Turkey
| | - Özden Çağlar Öztürk
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
| | - Hayri Kertmen
- Department of Neurosurgery, Dışkapı Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Ankara, Turkey
| | - Reyhan Eğilmez
- Department of Pathology, Sivas Cumhuriyet University School of Medicine, Sivas, Turkey
| | - Mehmet Fatih Yüce
- Department of Anesthesia, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
| | - Bora Gürer
- Department of Neurosurgery, Fatih Sultan Mehmet Education and Research Hospital, University of Health Sciences, Turkish Ministry of Health, Istanbul, Turkey
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Khaliq H, Juming Z, Ke-Mei P. The Physiological Role of Boron on Health. Biol Trace Elem Res 2018; 186:31-51. [PMID: 29546541 DOI: 10.1007/s12011-018-1284-3] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 02/21/2018] [Indexed: 12/20/2022]
Abstract
Boron is an essential mineral that plays an important role in several biological processes. Boron is required for growth of plants, animals, and humans. There are increasing evidences of this nutrient showing a variety of pleiotropic effects, ranging from anti-inflammatory and antioxidant effects to the modulation of different body systems. In the past few years, the trials showed disease-related polymorphisms of boron in different species, which has drawn attention of scientists to the significance of boron to health. Low boron profile has been related with poor immune function, increased risk of mortality, osteoporosis, and cognitive deterioration. High boron status revealed injury to cell and toxicity in different animals and humans. Some studies have shown some benefits of higher boron status, but findings have been generally mixed, which perhaps accentuates the fact that dietary intake will benefit only if supplemental amount is appropriate. The health benefits of boron are numerous in animals and humans; for instance, it affects the growth at safe intake. Central nervous system shows improvement and immune organs exhibit enhanced immunity with boron supplementation. Hepatic metabolism also shows positive changes in response to dietary boron intake. Furthermore, animals and human fed diets supplemented with boron reveal improved bone density and other benefits including embryonic development, wound healing, and cancer therapy. It has also been reported that boron affects the metabolism of several enzymes and minerals. In the background of these health benefits, low or high boron status is giving cause for concern. Additionally, researches are needed to further elucidate the mechanisms of boron effects, and determine the requirements in different species.
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Affiliation(s)
- Haseeb Khaliq
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
| | - Zhong Juming
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China
- College of Veterinary Medicine, Auburn University, Auburn, AL, USA
| | - Peng Ke-Mei
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University, Wuhan, 430070, Hubei, People's Republic of China.
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24
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Schmidt M, Tran-Nguyen D, Chizek P. Influence of boric acid on energy metabolism and stress tolerance of Candida albicans. J Trace Elem Med Biol 2018; 49:140-145. [PMID: 29895364 DOI: 10.1016/j.jtemb.2018.05.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 05/08/2018] [Accepted: 05/17/2018] [Indexed: 10/16/2022]
Abstract
Boron presents at physiological pH in the form of boric acid (BA), a molecule that has both positive and negative effects on biological processes. In medicine, BA is used as a topical treatment for vaginal yeast infections by Candida species because of its well-documented but poorly understood effect on inhibition of growth in general and of invasive, hyphal growth in particular. The present study examines the influence of BA on carbohydrate energy metabolism of this common human pathogen. Starting from previous findings about an inhibition of key NAD-dependent enzymes by BA in vitro, we confirmed that such an inhibition occurs in permeabilized C. albicans cells. Cultures growing even with moderate concentrations of BA experience mitochondrial failure, increase ethanol production from glucose and decrease the deposition of carbohydrate stores in the form of glycogen. Cells growing on the non-fermentable, FAD-generating carbon source lactate have a higher BA tolerance, which suggests that the toxicity of BA is rooted in an inhibition of NAD-dependent reactions and the increased production of ethanol. Boric acid exposure sensitizes C. albicans selectively to the toxic effects of ethanol. This additive effect suggests that the endogenously produced ethanol increases the load on ethanol resistance mechanisms. Lastly, combination studies showed no interactions of BA with common antifungal drugs, meaning that addition of BA to topical formulations can provide an additive antifungal effect regardless of the chosen active ingredient.
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Affiliation(s)
- Martin Schmidt
- Des Moines University, 3200 Grand Avenue, Des Moines, IA 50312, USA.
| | | | - Patrick Chizek
- Des Moines University, 3200 Grand Avenue, Des Moines, IA 50312, USA.
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Şen Ö, Emanet M, Çulha M. One-Step Synthesis of Hexagonal Boron Nitrides, Their Crystallinity and Biodegradation. Front Bioeng Biotechnol 2018; 6:83. [PMID: 29977891 PMCID: PMC6021499 DOI: 10.3389/fbioe.2018.00083] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Accepted: 06/01/2018] [Indexed: 11/25/2022] Open
Abstract
Hexagonal boron nitrides (hBNs) have recently been investigated for several novel applications due to their unique properties such as biocompatibility, superhydrophobicity, electrical insulation, and thermal and chemical stability. In addition, their biodegradation products have recently reported to have therapeutic effect on certain cancer types. hBNs are easily synthesized from boron and nitrogen precursors at moderately low temperatures. However, crystallinity and yield vary depending on the type of precursor, reaction temperature, and duration. In this study, a simple one-step hBNs synthesis method is reported without a catalyst, which might be an undesired contaminant for biomedical applications. The influence of boron precursors (boric acid, colemanite, or boron trioxide) on hBNs crystallinity, stability, and biodegradation in suspensions containing oxidative and hydrolytic degradation agents is investigated with the aim of their possible application in biomedicine. We found that the choice of boron precursor is a critically important parameter controlling the hBNs crystallinity and dependently influencing the biodegradation rate.
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Affiliation(s)
- Özlem Şen
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Melis Emanet
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
| | - Mustafa Çulha
- Department of Genetics and Bioengineering, Faculty of Engineering, Yeditepe University, Istanbul, Turkey
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26
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Uluisik I, Karakaya HC, Koc A. The importance of boron in biological systems. J Trace Elem Med Biol 2018; 45:156-162. [PMID: 29173473 DOI: 10.1016/j.jtemb.2017.10.008] [Citation(s) in RCA: 122] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 03/13/2017] [Accepted: 10/17/2017] [Indexed: 12/18/2022]
Abstract
Boron is an essential element for plants and probably essential for human and animal health. Boron has a broad range of physiological effects on biological systems at low concentrations, whereas it is toxic to at high concentrations. Eventhough there are many studies on boron's biological effects and toxicity, more information is needed to understand the mechanisms of its action. The aim of the current work is to review boron's function, transport and toxicity in different biological systems.
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Affiliation(s)
- Irem Uluisik
- Izmir Institute of Technology, Department of Molecular Biology and Genetics, 35430 Urla, Izmir, Turkey
| | - Huseyin Caglar Karakaya
- Izmir Institute of Technology, Department of Molecular Biology and Genetics, 35430 Urla, Izmir, Turkey
| | - Ahmet Koc
- Inonu University, Medical School, Department of Medical Biology and Genetics, Battalgazi, Malatya, Turkey.
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27
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Tepedelen BE, Korkmaz M, Tatlisumak E, Uluer ET, Ölmez E, Değerli İ, Soya E, İnan S. A Study on the Anticarcinogenic Effects of Calcium Fructoborate. Biol Trace Elem Res 2017; 178:210-217. [PMID: 28028787 DOI: 10.1007/s12011-016-0918-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 12/19/2016] [Indexed: 10/20/2022]
Abstract
Evidences about the preventive and therapeutic effects of boron compounds on cancer have been increasing in the last years. Although calcium fructoborate (CaFB) is used as a nutritional supplement, data about its preventive and therapeutic effects on neoplastic transformations are limited. In the present study, the various concentrations of CaFB were applied to the MDA-MB-231 metastatic breast cancer cell line. First, we examined the cytotoxic effect and IC50 value of CaFB by MTT assay. For the evaluation of the DNA damage, apoptosis and metastatic potential, expression levels of ATM, pATM, PARP, p53, p-p53, caspase-3, caspase-9, and VEGF were investigated by using immunoblotting and immunohistochemical methods. Cell viability was significantly reduced at 50 μM CaFB treatment. pATM, p-p53, and caspase-9 levels increased significantly in all groups; furthermore, there was approximately 12.5-, 2.4-, and 10.7-fold increase, respectively, for 100 μM CaFB treatment. ATM and p53 levels did not change with CaFB treatment, but PARP levels significantly 2.5-fold decreased. While VEGF immunoreactivity decreased in all groups, significant increase in caspase-3 immunoreactivity was observed only in the group treated with 50 μM CaFB (p < 0,001). Our results imply that CaFB may have therapeutic potential as well as preventive benefits in cancer.
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Affiliation(s)
| | - Mehmet Korkmaz
- Department of Medical Biology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey.
| | - Ertugrul Tatlisumak
- Department of Anatomy, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - Elgin Türköz Uluer
- Department of Histology and Embryology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - Ercüment Ölmez
- Department of Medical Pharmacology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - İsmail Değerli
- Department of Medical Biology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - Elif Soya
- Department of Medical Biology, Faculty of Medicine, Celal Bayar University, 45030, Manisa, Turkey
| | - Sevinç İnan
- Department of Histology and Embryology, Faculty of Medicine, İzmir University of Economics, 35330, İzmir, Turkey
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28
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Kobylewski SE, Henderson KA, Yamada KE, Eckhert CD. Activation of the EIF2α/ATF4 and ATF6 Pathways in DU-145 Cells by Boric Acid at the Concentration Reported in Men at the US Mean Boron Intake. Biol Trace Elem Res 2017; 176:278-293. [PMID: 27587023 PMCID: PMC5344959 DOI: 10.1007/s12011-016-0824-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Accepted: 08/15/2016] [Indexed: 02/06/2023]
Abstract
Fruits, nuts, legumes, and vegetables are rich sources of boron (B), an essential plant nutrient with chemopreventive properties. Blood boric acid (BA) levels reflect recent B intake, and men at the US mean intake have a reported non-fasting level of 10 μM. Treatment of DU-145 prostate cancer cells with physiological concentrations of BA inhibits cell proliferation without causing apoptosis and activates eukaryotic initiation factor 2 (eIF2α). EIF2α induces cell differentiation and protects cells by redirecting gene expression to manage endoplasmic reticulum stress. Our objective was to determine the temporal expression of endoplasmic reticulum (ER) stress-activated genes in DU-145 prostate cells treated with 10 μM BA. Immunoblots showed post-treatment increases in eIF2α protein at 30 min and ATF4 and ATF6 proteins at 1 h and 30 min, respectively. The increase in ATF4 was accompanied by an increase in the expression of its downstream genes growth arrest and DNA damage-induced protein 34 (GADD34) and homocysteine-induced ER protein (Herp), but a decrease in GADD153/CCAAT/enhancer-binding protein homologous protein (CHOP), a pro-apoptotic gene. The increase in ATF6 was accompanied by an increase in expression of its downstream genes GRP78/BiP, calreticulin, Grp94, and EDEM. BA did not activate IRE1 or induce cleavage of XBP1 mRNA, a target of IRE1. Low boron status has been associated with increased cancer risk, low bone mineralization, and retinal degeneration. ATF4 and BiP/GRP78 function in osteogenesis and bone remodeling, calreticulin is required for tumor suppressor p53 function and mineralization of teeth, and BiP/GRP78 and EDEM prevent the aggregation of misfolded opsins which leads to retinal degeneration. The identification of BA-activated genes that regulate its phenotypic effects provides a molecular underpinning for boron nutrition and biology.
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Affiliation(s)
- Sarah E Kobylewski
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kimberly A Henderson
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Kristin E Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA
| | - Curtis D Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA, USA.
- Department of Environmental Health Sciences, University of California, Fielding School of Public Health, 650 Charles E. Young Dr., Los Angeles, CA, 90095, USA.
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29
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St-Coeur PD, Kinley S, Vogels CM, Decken A, Jr. Morin P, Westcott SA. Synthesis, characterization, and anticancer properties of iminophosphineplatinum(II) complexes containing boronate esters. CAN J CHEM 2017. [DOI: 10.1139/cjc-2016-0570] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Three new iminophosphines containing pinacol-derived boronate esters have been prepared and ligated to dichloridoplatinum(II) fragments. All compounds have been characterized fully, including an X-ray diffraction study carried out for the platinum complex 8, which is derived from 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)aniline. These three new platinum complexes, along with the non-boron containing control, have been examined for their initial cytotoxic properties against two glioma cell lines using the MTT method.
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Affiliation(s)
- Patrick-Denis St-Coeur
- Département de chimie et biochimie, Université de Moncton, Campus de Moncton, Moncton, NB E1A 3E9, Canada
| | - Samantha Kinley
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Andreas Decken
- Department of Chemistry, University of New Brunswick, Fredericton, NB E3B 5A3, Canada
| | - Pier Jr. Morin
- Département de chimie et biochimie, Université de Moncton, Campus de Moncton, Moncton, NB E1A 3E9, Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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30
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Li X, Wang X, Zhang J, Hanagata N, Wang X, Weng Q, Ito A, Bando Y, Golberg D. Hollow boron nitride nanospheres as boron reservoir for prostate cancer treatment. Nat Commun 2017; 8:13936. [PMID: 28059072 PMCID: PMC5228389 DOI: 10.1038/ncomms13936] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 11/15/2016] [Indexed: 12/01/2022] Open
Abstract
High global incidence of prostate cancer has led to a focus on prevention and treatment strategies to reduce the impact of this disease in public health. Boron compounds are increasingly recognized as preventative and chemotherapeutic agents. However, systemic administration of soluble boron compounds is hampered by their short half-life and low effectiveness. Here we report on hollow boron nitride (BN) spheres with controlled crystallinity and boron release that decrease cell viability and increase prostate cancer cell apoptosis. In vivo experiments on subcutaneous tumour mouse models treated with BN spheres demonstrated significant suppression of tumour growth. An orthotopic tumour growth model was also utilized and further confirmed the in vivo anti-cancer efficacy of BN spheres. Moreover, the administration of hollow BN spheres with paclitaxel leads to synergetic effects in the suppression of tumour growth. The work demonstrates that hollow BN spheres may function as a new agent for prostate cancer treatment. Use of soluble boron compounds in prostate cancer therapy is hampered by their short half-life time and low effectiveness. Here, the authors show that boron nitride nanospheres with controlled boron release can reduce proliferation of prostate cancer cells and inhibit tumour growth in animal models.
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Affiliation(s)
- Xia Li
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Xiupeng Wang
- Health Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Jun Zhang
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan.,School of Materials Science and Engineering, Hebei Key Laboratory of Boron Nitride Micro and Nano Materials, Hebei University of Technology, Tianjin 300130, China
| | - Nobutaka Hanagata
- Nanotechnology Innovation Station, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047, Japan
| | - Xuebin Wang
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Qunhong Weng
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Atsuo Ito
- Health Research Institute, Department of Life Science and Biotechnology, National Institute of Advanced Industrial Science and Technology (AIST), Central 6, 1-1-1 Higashi, Tsukuba, Ibaraki 305-8566, Japan
| | - Yoshio Bando
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
| | - Dmitri Golberg
- World Premier International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 305-0044, Japan
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Movahedi Najafabadi BAH, Abnosi MH. Boron Induces Early Matrix Mineralization via Calcium Deposition and Elevation of Alkaline Phosphatase Activity in Differentiated Rat Bone Marrow Mesenchymal Stem Cells. CELL JOURNAL 2016; 18:62-73. [PMID: 27054120 PMCID: PMC4819387 DOI: 10.22074/cellj.2016.3988] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 09/14/2015] [Indexed: 11/04/2022]
Abstract
OBJECTIVE Boron (B) is essential for plant development and might be an essential micronutrient for animals and humans. This study was conducted to characterize the impact of boric acid (BA) on the cellular and molecular nature of differentiated rat bone marrow mesenchymal stem cells (BMSCs). MATERIALS AND METHODS In this experimental study, BMSCs were extracted and expanded to the 3rdpassage, then cultured in Dulbecco's Modified Eagle's Medium (DMEM) complemented with osteogenic media as well as 6 ng/ml and 6 µg/ml of BA. After 5, 10, 15 and 21 days the viability and the level of mineralization was determined using MTT assay and alizarin red respectively. In addition, the morphology, nuclear diameter and cytoplasmic area of the cells were studied with the help of fluorescent dye. The concentration of calcium, activity of alanine transaminase (ALT), aspartate transaminase (AST), lactate dehydrogenase (LDH) and alkaline phosphatase (ALP) as well as sodium and potassium levels were also evaluated using commercial kits and a flame photometer respectively. RESULTS Although 6 µg/ml of BA was found to be toxic, a concentration of 6 ng/ml increased the osteogenic ability of the cell significantly throughout the treatment. In addition it was observed that B treatment caused the early induction of matrix mineralization compared to controls. CONCLUSION Although more investigation is required, we suggest the prescription of a very low concentration of B in the form of BA or foods containing BA, in groups at high risk of osteoporosis or in the case of bone fracture.
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Wang X, Li X, Zeng YN, He F, Yang XM, Guan F. Enhanced expression of polysialic acid correlates with malignant phenotype in breast cancer cell lines and clinical tissue samples. Int J Mol Med 2015; 37:197-206. [PMID: 26530860 DOI: 10.3892/ijmm.2015.2395] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 10/16/2015] [Indexed: 11/06/2022] Open
Abstract
Polysialic acid (PSA) is highly expressed during embryonic development, but barely expressed during postnatal development, and may be 're-expressed' in cancer tissues. In this study, motility and migration assays were performed to compare the changes in cell behavior between non-malignant and maligant cells. Next, the expression levels of PSA were evaluated in 4 human and mouse normal breast or breast cancer (BC) cell lines using 1,2-diamino-4,5-methylenedioxybenzene-labeling HPLC technology, as well as in human clinical BC tissue samples. PSA expression was significantly higher in malignant cells (where it appeared to facilitate cell migration and motility) than in non-malignant cells. Enhanced PSA expression levels were also observed during epithelial-mesenchymal transition (EMT), a leading cause of cancer cell metastasis, which was induced in the NMuMG and MCF10A cells by treatment with transforming growth factor-β1 (TGF-β1). An increased PSA expression also correlated with the disease stage in the patients with BC (P<0.0001). Using RT-qPCR, we found that polysialyltransferase ST8SiaIV (PST) and polysialyltransferase ST8SiaII (STX), which are responsible for PSA synthesis, were differently expressed in the tested BC samples. However, PST, but not STX, was re-expressed in 14 out of 20 clinical BC samples. The findings of the present study indicate that the pathophysiology of BC involves the aberrant regulation of PSA expression and PST gene expression.
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Affiliation(s)
- Xin Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Xiang Li
- Wuxi Medical School, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Ying-Nan Zeng
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Fa He
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
| | - Xiao-Min Yang
- Department of Surgical Oncology, The First Affiliated Hospital, Medicine School, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Feng Guan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, Jiangsu 214122, P.R. China
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33
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Pizzorno L. Nothing Boring About Boron. Integr Med (Encinitas) 2015; 14:35-48. [PMID: 26770156 PMCID: PMC4712861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The trace mineral boron is a micronutrient with diverse and vitally important roles in metabolism that render it necessary for plant, animal, and human health, and as recent research suggests, possibly for the evolution of life on Earth. As the current article shows, boron has been proven to be an important trace mineral because it (1) is essential for the growth and maintenance of bone; (2) greatly improves wound healing; (3) beneficially impacts the body's use of estrogen, testosterone, and vitamin D; (4) boosts magnesium absorption; (5) reduces levels of inflammatory biomarkers, such as high-sensitivity C-reactive protein (hs-CRP) and tumor necrosis factor α (TNF-α); (6) raises levels of antioxidant enzymes, such as superoxide dismutase (SOD), catalase, and glutathione peroxidase; (7) protects against pesticide-induced oxidative stress and heavy-metal toxicity; (8) improves the brains electrical activity, cognitive performance, and short-term memory for elders; (9) influences the formation and activity of key biomolecules, such as S-adenosyl methionine (SAM-e) and nicotinamide adenine dinucleotide (NAD(+)); (10) has demonstrated preventive and therapeutic effects in a number of cancers, such as prostate, cervical, and lung cancers, and multiple and non-Hodgkin's lymphoma; and (11) may help ameliorate the adverse effects of traditional chemotherapeutic agents. In none of the numerous studies conducted to date, however, do boron's beneficial effects appear at intakes > 3 mg/d. No estimated average requirements (EARs) or dietary reference intakes (DRIs) have been set for boron-only an upper intake level (UL) of 20 mg/d for individuals aged ≥ 18 y. The absence of studies showing harm in conjunction with the substantial number of articles showing benefits support the consideration of boron supplementation of 3 mg/d for any individual who is consuming a diet lacking in fruits and vegetables or who is at risk for or has osteopenia; osteoporosis; osteoarthritis (OA); or breast, prostate, or lung cancer.
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Affiliation(s)
- Lara Pizzorno
- Corresponding author: Lara Pizzorno, MDiv, MA, LMT E-mail address:
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Cormier K, Curry RD, Betsch MP, Goguen JA, Vogels CM, Decken A, Turcotte S, Westcott SA. Synthesis, Characterization, and Anticancer Activities of Pyrogallol-Based Arylspiroborates. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2490] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kevin Cormier
- Département de chimie et biochimie; Université de Moncton; Campus de Moncton Moncton NB E1A 3E9 Canada
- Atlantic Cancer Research Institute; Moncton NB E1C 8X3 Canada
| | - R. Daniel Curry
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Mitchel P. Betsch
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Jeremy A. Goguen
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
| | - Andreas Decken
- Department of Chemistry; University of New Brunswick; Fredericton NB E3B 5A3 Canada
| | - Sandra Turcotte
- Département de chimie et biochimie; Université de Moncton; Campus de Moncton Moncton NB E1A 3E9 Canada
- Atlantic Cancer Research Institute; Moncton NB E1C 8X3 Canada
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry; Mount Allison University; Sackville NB E4L 1G8 Canada
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35
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Kucukkurt I, Ince S, Demirel HH, Turkmen R, Akbel E, Celik Y. The Effects of Boron on Arsenic-Induced Lipid Peroxidation and Antioxidant Status in Male and Female Rats. J Biochem Mol Toxicol 2015; 29:564-71. [PMID: 26184899 DOI: 10.1002/jbt.21729] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/12/2015] [Accepted: 06/17/2015] [Indexed: 01/30/2023]
Abstract
The aim of the present study was to investigate the possible protective effects of boron, an antioxidant agent, against arsenic-induced oxidative stress in male and female rats. In total, 42 Wistar albino male and female rats were divided into three equal groups: The animals in the control group were given normal drinking water, the second group was given drinking water with 100 mg/L arsenic, and the third group was orally administered drinking water with 100 mg/kg boron together with arsenic. At the end of the 28-day experiment, arsenic increased lipid peroxidation and damage in the tissues of rats. However, boron treatment reversed this arsenic-induced lipid peroxidation and activities of antioxidant enzymes in rats. Moreover, boron exhibited a protective action against arsenic-induced histopathological changes in the tissues of rats. In conclusion, boron was found to be effective in protecting rats against arsenic-induced lipid peroxidation by enhancing antioxidant defense mechanisms.
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Affiliation(s)
- Ismail Kucukkurt
- Department of Biochemistry, Faculty of Veterinary Medicine, Afyon Kocatepe University, 03030, Afyonkarahisar, Turkey.
| | - Sinan Ince
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Afyon Kocatepe University, 03030, Afyonkarahisar, Turkey
| | | | - Ruhi Turkmen
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Afyon Kocatepe University, 03030, Afyonkarahisar, Turkey
| | - Erten Akbel
- Usak Health Training School, Usak University, 64200, Usak, Turkey
| | - Yasemin Celik
- Afyon Health Training School, Afyon Kocatepe University, Afyonkarahisar, Turkey
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Guan F, Wang X, He F. Promotion of cell migration by neural cell adhesion molecule (NCAM) is enhanced by PSA in a polysialyltransferase-specific manner. PLoS One 2015; 10:e0124237. [PMID: 25885924 PMCID: PMC4401701 DOI: 10.1371/journal.pone.0124237] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Accepted: 03/05/2015] [Indexed: 12/18/2022] Open
Abstract
Neural cell adhesion molecule 140 (NCAM-140) is a glycoprotein and always highly polysialylated in cancer. Functions of polysialic acid (PSA) that binds to N-glycan termini on NCAM remain unclear. ldlD-14 cells, a CHO cell mutant deficient in UDP-Gal 4-epimerase, are useful for structural and functional studies of Gal-containing glycoproteins because their abnormal glycosylation can be converted to normal status by exogenous addition of galactose (Gal). We cloned the genes for NCAM-140 and for polysialyltransferases STX and PST (responsible for PSA synthesis) from normal murine mammary gland epithelial (NMuMG) cells and transfected them into ldlD-14 and human breast cancer cells MCF-7. The effect of PSA on NCAM-mediated cell proliferation, motility, migration and adhesion was studied. We found that NCAM-140 significantly promoted cell proliferation, motility and migration, while polysialylation of NCAM-140 catalyzed by STX, but not by PST, enhanced NCAM-mediated cell migration, but not cell proliferation or motility. In addition, PSA catalyzed by different polysialyltransferases affected the adhesion of NCAM to different extracellular matrix (ECM) components.
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Affiliation(s)
- Feng Guan
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
- * E-mail:
| | - Xin Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
| | - Fa He
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China
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Abstract
AbstractBoric acid, H3BO3, is a weak acid and at physiological pH is in the form of an uncharged small molecule. Behaving as a Lewis acid, it forms complexes with amino- and hydroxy acids, carbohydrates, nucleotides and vitamins through electron donor-acceptor interactions. These interactions are believed to be beneficial for human health. Synthetic bis-chelate complexes of boric acid with organic biomolecules are therefore considered for nutritional and/or pharmaceutical applications. The use of boric acid for BNCT has gained attention due to the short biological half-life, solubility, plasma circulation and the non-selective soft tissue accumulation properties of this simple molecule. Complexation of boric acid with sugars is of particular importance in understanding the role of boron as a carrier for nucleotides and carbohydrates. A potential and catalytic role of boric acid in peptide and nucleic acid synthesis and in the stabilization of sugar molecules by acting as a complexing agent have been demonstrated. Its possible role as a phosphorylation chaperone in a prebiotic world has been recently suggested. This contribution reviews the highlights in the physiologic, therapeutic and prebiotic significance of boric acid in the last decade.
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Henderson KA, Kobylewski SE, Yamada KE, Eckhert CD. Boric acid induces cytoplasmic stress granule formation, eIF2α phosphorylation, and ATF4 in prostate DU-145 cells. Biometals 2014; 28:133-41. [PMID: 25425213 PMCID: PMC4300416 DOI: 10.1007/s10534-014-9809-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 11/13/2014] [Indexed: 11/26/2022]
Abstract
Dietary boron intake is associated with reduced prostate and lung cancer risk and increased bone mass. Boron is absorbed and circulated as boric acid (BA) and at physiological concentrations is a reversible competitive inhibitor of cyclic ADP ribose, the endogenous agonist of the ryanodine receptor calcium (Ca+2) channel, and lowers endoplasmic reticulum (ER) [Ca2+]. Low ER [Ca2+] has been reported to induce ER stress and activate the eIF2α/ATF4 pathway. Here we report that treatment of DU-145 prostate cells with physiological levels of BA induces ER stress with the formation of stress granules and mild activation of eIF2α, GRP78/BiP, and ATF4. Mild activation of eIF2α and its downstream transcription factor, ATF4, enables cells to reconfigure gene expression to manage stress conditions and mild activation of ATF4 is also required for the differentiation of osteoblast cells. Our results using physiological levels of boric acid identify the eIF2α/ATF pathway as a plausible mode of action that underpins the reported health effects of dietary boron.
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Affiliation(s)
- Kimberly A. Henderson
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Sarah E. Kobylewski
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Kristin E. Yamada
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
| | - Curtis D. Eckhert
- Interdepartmental Program in Molecular Toxicology, University of California, Los Angeles, CA USA
- Department of Environmental Health Sciences, University of California, Charles E. Young Drive, Los Angeles, CA 90095 USA
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Abstract
In vitro, animal, and human experiments have shown that boron is a bioactive element in nutritional amounts that beneficially affects bone growth and central nervous system function, alleviates arthritic symptoms, facilitates hormone action and is associated with a reduced risk for some types of cancer. The diverse effects of boron suggest that it influences the formation and/or activity of substances that are involved in numerous biochemical processes. Several findings suggest that this influence is through the formation of boroesters in biomolecules containing cis-hydroxyl groups. These biomolecules include those that contain ribose (e.g., S-adenosylmethionine, diadenosine phosphates, and nicotinamide adenine dinucleotide). In addition, boron may form boroester complexes with phosphoinositides, glycoproteins, and glycolipids that affect cell membrane integrity and function. Both animal and human data indicate that an intake of less than 1.0mg/day inhibits the health benefits of boron. Dietary surveys indicate such an intake is not rare. Thus, increasing boron intake by consuming a diet rich in fruits, vegetables, nuts and pulses should be recognized as a reasonable dietary recommendation to enhance health and well-being.
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Affiliation(s)
- Forrest H Nielsen
- U.S. Department of Agriculture, Agricultural Research Service,(1) Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA.
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Ozdemir A, Gursaclı RT, Tekinay T. Non-intercalative, deoxyribose binding of boric acid to calf thymus DNA. Biol Trace Elem Res 2014; 158:268-74. [PMID: 24652629 DOI: 10.1007/s12011-014-9924-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Accepted: 02/20/2014] [Indexed: 10/25/2022]
Abstract
The present study characterizes the effects of the boric acid binding on calf thymus DNA (ct-DNA) by spectroscopic and calorimetric methods. UV-Vis absorbance spectroscopy, circular dichroism (CD) spectroscopy, transmission electron microscopy (TEM), isothermal titration calorimetry (ITC), and Fourier transform infrared (FT-IR) spectroscopy were employed to characterize binding properties. Changes in the secondary structure of ct-DNA were determined by CD spectroscopy. Sizes and morphologies of boric acid-DNA complexes were determined by transmission electron microscopy (TEM). The kinetics of boric acid binding to calf thymus DNA (ct-DNA) was investigated by isothermal titration calorimetry (ITC). ITC results revealed that boric acid exhibits a moderate affinity to ct-DNA with a binding constant (K a) of 9.54 × 10(4) M(-1). FT-IR results revealed that boric acid binds to the deoxyribose sugar of DNA without disrupting the B-conformation at tested concentrations.
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Affiliation(s)
- Ayse Ozdemir
- UNAM-National Nanotechnology Research Center, Bilkent University, Ankara, Bilkent, 06800, Turkey
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Çelikezen FÇ, Turkez H, Togar B, Izgi MS. DNA damaging and biochemical effects of potassium tetraborate. EXCLI JOURNAL 2014; 13:446-50. [PMID: 26417271 DOI: pmid/26417271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 04/14/2014] [Indexed: 01/16/2023]
Abstract
Potassium tetraborate (PTB) is a product resulting from the controlled reaction of potassium hydroxide, water and boric acid (BA). It is used in many areas of industry such as disinfectant, detergent and treatment of contact lenses. PTB is one of the boron compounds which is most commonly used in many areas of industry although very limited information is available concerning its toxicity. Therefore, in this study, it is aimed to determine genetic and biochemical effects of PTB in human blood cell cultures (n=4). PTB was added into culture tubes at various concentrations (0-1280 µg/ml). Micronucleus (MN) and chromosomal aberration (CA) tests were performed for genotoxic damage influences estimation. In addition, biochemical parameters (total antioxidant capacity (TAC) and total oxidative status (TOS) were examined to determine oxidative effects. The results indicated that all tested concentrations of PTB were found to be non-genotoxic. In addition, low concentrations (1.25, 2.5 and 5 µg/ml) of PTB caused increases of TAC levels. Furthermore, all concentrations of PTB were not changed the TOS levels in cultured human blood cells. Based on these results, in this study it has been reported for the first time that PTB is not genotoxic and it increases the antioxidant capacity in human peripheral blood lymphocytes.
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Affiliation(s)
| | - Hasan Turkez
- Department of Molecular Biology and Genetics, Faculty of Science, Erzurum Technical University, Erzurum, Turkey
| | - Basak Togar
- Department of Biology, Faculty of Science, Atatürk University, Turkey
| | - Mehmet Sait Izgi
- Department of Chemistry, Science and Letter Faculty, Bitlis Eren University, Turkey
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Disodium pentaborate decahydrate (DPD) induced apoptosis by decreasing hTERT enzyme activity and disrupting F-actin organization of prostate cancer cells. Tumour Biol 2014; 35:1531-8. [PMID: 24122279 DOI: 10.1007/s13277-013-1212-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 09/16/2013] [Indexed: 10/26/2022] Open
Abstract
Animal and cell culture studies have showed that boron and its derivatives may be promising anticancer agents in prostate cancer treatment. Thus, DU145 cells were treated with disodium pentaborate decahydrate (DPD) for 24, 48, and 72 h in order to investigate the inhibitor effect and mechanisms of DPD. Then, cell proliferation, telomerase enzyme activity, actin polymerization, and apoptosis were detected by WST-1 assay, qRT-PCR, immunofluorescence labeling, and flow cytometry, respectively. We found that DPD inhibited the growth of human prostate cancer cell line DU145 at the concentration of 3.5 mM for 24 h. Our results demonstrated that 7 mM of DPD treatment prevented the telomerase enzyme activity at the rate of 38 %. Furthermore, DPD has an apoptotic effect on DU145 cells which were examined by labeling DNA breaks. With 7 mM of DPD treatment, 8, 14, and 41 % of apoptotic cells were detected for 24, 48, and 72 h, respectively. Additionally, immunofluorescence labeling showed that the normal organization of actin filaments was disrupted in DPD-exposed cells, which is accompanied by the alteration of cell shape and by apoptosis in targeted cells. Taken together, the results indicate that DPD may exert its cytotoxicity at least partly by interfering with the dynamic properties of actin polymerization and decreasing the telomerase activity. Eventually, for the first time, the results of this study showed that DPD suppressed the activity of telomerase in DU145 cells, and therefore, we suggested that DPD could be an important agent for its therapeutic potential in the treatment of prostate cancer.
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43
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Yamagishi T, Sahni S, Sharp DM, Arvind A, Jansson PJ, Richardson DR. P-glycoprotein mediates drug resistance via a novel mechanism involving lysosomal sequestration. J Biol Chem 2013; 288:31761-71. [PMID: 24062304 PMCID: PMC3814770 DOI: 10.1074/jbc.m113.514091] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 09/16/2013] [Indexed: 11/06/2022] Open
Abstract
Localization of the drug transporter P-glycoprotein (Pgp) to the plasma membrane is thought to be the only contributor of Pgp-mediated multidrug resistance (MDR). However, very little work has focused on the contribution of Pgp expressed in intracellular organelles to drug resistance. This investigation describes an additional mechanism for understanding how lysosomal Pgp contributes to MDR. These studies were performed using Pgp-expressing MDR cells and their non-resistant counterparts. Using confocal microscopy and lysosomal fractionation, we demonstrated that intracellular Pgp was localized to LAMP2-stained lysosomes. In Pgp-expressing cells, the Pgp substrate doxorubicin (DOX) became sequestered in LAMP2-stained lysosomes, but this was not observed in non-Pgp-expressing cells. Moreover, lysosomal Pgp was demonstrated to be functional because DOX accumulation in this organelle was prevented upon incubation with the established Pgp inhibitors valspodar or elacridar or by silencing Pgp expression with siRNA. Importantly, to elicit drug resistance via lysosomes, the cytotoxic chemotherapeutics (e.g. DOX, daunorubicin, or vinblastine) were required to be Pgp substrates and also ionized at lysosomal pH (pH 5), resulting in them being sequestered and trapped in lysosomes. This property was demonstrated using lysosomotropic weak bases (NH4Cl, chloroquine, or methylamine) that increased lysosomal pH and sensitized only Pgp-expressing cells to such cytotoxic drugs. Consequently, a lysosomal Pgp-mediated mechanism of MDR was not found for non-ionizable Pgp substrates (e.g. colchicine or paclitaxel) or ionizable non-Pgp substrates (e.g. cisplatin or carboplatin). Together, these studies reveal a new mechanism where Pgp-mediated lysosomal sequestration of chemotherapeutics leads to MDR that is amenable to therapeutic exploitation.
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Affiliation(s)
- Tetsuo Yamagishi
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Sumit Sahni
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Danae M. Sharp
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Akanksha Arvind
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Patric J. Jansson
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
| | - Des R. Richardson
- From the Molecular Pharmacology and Pathology Program, Department of Pathology and Bosch Institute, Blackburn Building (D06), University of Sydney, Sydney, New South Wales 2006, Australia
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44
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Schmidt M, Akasaka K, Messerly JT, Boyer MP. Role of Hog1, Tps1 and Sod1 in boric acid tolerance of Saccharomyces cerevisiae. MICROBIOLOGY-SGM 2012; 158:2667-2678. [PMID: 22902726 DOI: 10.1099/mic.0.060590-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
In order to identify genetic contributions to boric acid (BA) resistance, a yeast knockout collection was screened for BA-sensitive mutants. Prominent among the BA-sensitive mutants were strains with defects in the cytoplasmic part of the high osmolarity/glycerol (HOG) signalling pathway, the trehalose-synthesis pathway (TPS1/TPS2) and the copper-zinc superoxide dismutase SOD1. An analysis of HOG-pathway mutants and fluorescence microscopy of Hog1-GFP fusions showed that the non-redundant cytoplasmic components of the pathway, Pbs2p and Hog1p, are required to maintain BA resistance, but that import of the activated Hog1p kinase into the nucleus neither occurs during BA stress nor is necessary for wild-type-like BA tolerance. Pbs2p and Hog1p are also required to support normal morphogenesis during BA stress as their absence leads to BA-induced hyperpolarized growth. An analysis of Sod1p and Tps1p expression revealed that BA stress induces superoxide dismutase and increases trehalose synthesis activity, albeit only after a 7 h delay. We conclude that normal BA resistance of Saccharomyces cerevisiae depends on the functioning of HOG signalling, the trehalose synthesis pathway and superoxide dismutase activity.
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Affiliation(s)
- Martin Schmidt
- Des Moines University, 3200 Grand Avenue, Des Moines, IA 50312, USA
| | - Kento Akasaka
- Des Moines University, 3200 Grand Avenue, Des Moines, IA 50312, USA
| | | | - Michael P Boyer
- Des Moines University, 3200 Grand Avenue, Des Moines, IA 50312, USA
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45
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Smoum R, Rubinstein A, Dembitsky VM, Srebnik M. Boron containing compounds as protease inhibitors. Chem Rev 2012; 112:4156-220. [PMID: 22519511 DOI: 10.1021/cr608202m] [Citation(s) in RCA: 298] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Reem Smoum
- The School of Pharmacy, Institute for Drug Research, The Hebrew University of Jerusalem, Faculty of Medicine, Jerusalem, Israel.
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46
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Müezzinoğlu T, Korkmaz M, Neşe N, Bakırdere S, Arslan Y, Ataman OY, Lekili M. Prevalence of prostate cancer in high boron-exposed population: a community-based study. Biol Trace Elem Res 2011; 144:49-57. [PMID: 21431327 DOI: 10.1007/s12011-011-9023-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 03/07/2011] [Indexed: 11/24/2022]
Abstract
We investigated the possible relationship between boron exposure and prostate cancer (PCa) for men living and being employed at boron mines in villages with rich boron minerals. Out of 456 men studied, 159 were from villages with rich boron sources and boron levels in drinking water of >1 mg L(-1) and these men formed the study group, while 63 from villages with rich boron sources and boron levels in drinking water of <1 mg L(-1) were enrolled into control group 1. A further 234 subjects from other villages with no boron mines were considered as control group 2. Prostate specific antigen (PSA) levels could be obtained from a total of 423 men. Urinary boron concentration as an indicator of boron exposure in 63 subjects, prostatic volumes by transrectal ultrasonography in 39 subjects, and prostatic biopsies in 36 subjects were obtained for study and control groups. The daily boron exposure was calculated according to urinary boron levels. Although there was no significant difference among the groups in terms of total PSA levels, the number of subjects with tPSA ≥2.5 and tPSA ≥10.0 ng dL(-1) prostatic volumes in men whose prostates were biopsied (p < 0.012) was significantly lower in the study group as compared with those in the control group 2. These results suggested that high exposure to boron might have an implication within the prostatic cellular processes related to hyperplasia and carcinogenesis, even though we did not find a statistically significant association between PCa and boron exposure.
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47
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Nielsen FH, Meacham SL. Growing Evidence for Human Health Benefits of Boron. J Evid Based Complementary Altern Med 2011. [DOI: 10.1177/2156587211407638] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Growing evidence from a variety of experimental models shows that boron is a bioactive and beneficial (perhaps essential) element for humans. Reported beneficial actions of boron include arthritis alleviation or risk reduction, bone growth and maintenance, central nervous system function, cancer risk reduction, hormone facilitation, and immune response, inflammation, and oxidative stress modulation. The diverse effects of boron indicate that it influences the formation and/or activity of an entity that is involved in many biochemical processes. Formation of boroesters with the ribose moiety of compounds involved in numerous reactions, such as S-adenosylmethionine and oxidized nicotinamide adenine dinucleotide (NAD+) might be the reason for boron bioactivity. Both animal and human data suggest that boron intakes should be >1.0 mg/d. Many people consume less than this amount. Thus, a low boron intake should be considered a health concern, which can be prevented by diets rich in fruits, vegetables, nuts, and pulses.
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Affiliation(s)
- Forrest H. Nielsen
- USDA, ARS, Grand Forks Human Nutrition Research Center, Grand Forks, ND, USA
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48
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Çolak S, Geyikoğlu F, Keles ON, Türkez H, Topal A, Unal B. The neuroprotective role of boric acid on aluminum chloride-induced neurotoxicity. Toxicol Ind Health 2011; 27:700-10. [DOI: 10.1177/0748233710395349] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
This study was designed to investigate the qualitative and quantitative changes in brain tissue following aluminum chloride (AlCl3) administration and to determine whether boric acid (BA) has a protective effect against brain damage induced by AlCl 3. For this aim, Sprague-Dawley rats were randomly separated into eight groups: (1) control, (2) AlCl3 (5 mg/kg/day), (3, 4 and 5) BA (3.25, 36 and 58.5 mg/kg/day), (6, 7 and 8) AlCl3 (5 mg/kg/day) plus BA (3.25, 36 and 58.5 mg/kg/day). After the animals were killed, the total numbers of neuron in the brain of all groups were determined using an unbiased stereological analysis. In addition to the stereological analysis, all brains were examined histopathologically by using light and electron microscopy. The stereological and histopathological results indicated a high damage of the rat brain tissues in the AlCl3 and AlCl3 + high dose BA (36 and 58.5) treatment groups. However, protective effects on neuron were observed in the AlCl3 + low dose BA (3.25) group when compared other AlCl3 groups. Our stereological and histopathological findings show that low-dose BA, as a proteasome inhibitor, can decrease the adverse effects of AlCl3 on the cerebral cortex.
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Affiliation(s)
- Suat Çolak
- Department of Biology, Ataturk University Faculty of Science, Erzurum, Turkey,
| | - Fatime Geyikoğlu
- Department of Biology, Ataturk University Faculty of Science, Erzurum, Turkey
| | - Osman Nuri Keles
- Department of Histology and Embryology, Ataturk University School of Medicine, Erzurum, Turkey
| | - Hasan Türkez
- Department of Biology, Ataturk University Faculty of Science, Erzurum, Turkey
| | - Ahmet Topal
- Department of Physiology, Ataturk University Faculty of Veterinary, Erzurum, Turkey
| | - Bünyami Unal
- Department of Histology and Embryology, Ataturk University School of Medicine, Erzurum, Turkey
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Duydu Y, Başaran N, Üstündağ A, Aydın S, Ündeğer Ü, Ataman OY, Aydos K, Düker Y, Ickstadt K, Waltrup BS, Golka K, Bolt HM. Reproductive toxicity parameters and biological monitoring in occupationally and environmentally boron-exposed persons in Bandırma, Turkey. Arch Toxicol 2011; 85:589-600. [DOI: 10.1007/s00204-011-0692-3] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2011] [Accepted: 03/01/2011] [Indexed: 10/18/2022]
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50
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Lysosomal trapping of a radiolabeled substrate of P-glycoprotein as a mechanism for signal amplification in PET. Proc Natl Acad Sci U S A 2011; 108:2593-8. [PMID: 21262843 DOI: 10.1073/pnas.1014641108] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The radiotracer [(11)C]N-desmethyl-loperamide (dLop) images the in vivo function of P-glycoprotein (P-gp), a transporter that blocks the entry of drugs that are substrates into brain. When P-gp is inhibited, [(11)C]dLop, a potent opiate agonist, enters and becomes trapped in the brain. This trapping is beneficial from an imaging perspective, because it amplifies the PET signal, essentially by accumulating radioactivity over time. As we previously demonstrated that this trapping was not caused by binding to opiate receptors, we examined whether [(11)C]dLop, a weak base, is ionically trapped in acidic lysosomes. To test this hypothesis, we measured [(3)H]dLop accumulation in human cells by using lysosomotropics. Because the in vivo trapping of dLop was seen after P-gp inhibition, we also measured [(3)H]dLop uptake in P-gp-expressing cells treated with the P-gp inhibitor tariquidar. All lysosomotropics decreased [(3)H]dLop accumulation by at least 50%. In P-gp-expressing cells, tariquidar (and another P-gp inhibitor) surprisingly decreased [(3)H]dLop uptake. Consequently, we measured [(11)C]dLop uptake before and after tariquidar preadministration in lysosome-rich organs of P-gp KO mice and humans. After tariquidar pretreatment in both species, radioactivity uptake in these organs decreased by 35% to 40%. Our results indicate that dLop is trapped in lysosomes and that tariquidar competes with dLop for lysosomal accumulation in vitro and in vivo. Although tariquidar and dLop compete for lysosomal trapping in the periphery, such competition does not occur in brain because tariquidar has negligible entry into brain. In summary, tariquidar and [(11)C]dLop can be used in combination to selectively measure the function of P-gp at the blood-brain barrier.
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