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Wang W, Xiao K, Zheng X, Zhu D, Yang Z, Tang J, Sun P, Wang J, Peng K. Effects of supplemental boron on growth performance and meat quality in African ostrich chicks. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:11024-11029. [PMID: 25363572 DOI: 10.1021/jf501789t] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
To investigate the effects of boron on growth performance and meat quality, 10-day-old Africa ostrich chicks were randomly divided into 6 groups with 6 replicates in each group. For 80 days, birds in the treatments were fed the same basal diet but given different concentrations of boron-supplemented water. The highest final BW (33.4 ± 0.30 kg), ADFI (376 ± 1.83 g), and ADG (224 ± 1.01 g) appeared in the group receiving 160 mg/L boron (group 4). 160 mg/L boron also decreased drip loss (2.20 ± 0.59), cooking loss (35.3 ± 1.14), and elevated pH value (6.13 ± 0.28) of meat (P < 0.05). Ostrich chicks in the 640 mg/L treatment group (group 6) had the lowest final BW (30.8 ± 1.05 kg) and ADG (208 ± 0.74 g) (P < 0.05). The highest ash (1.35 ± 0.01%) and pH (6.18 ± 0.03) and the lowest protein (20.4 ± 1.74%), drip loss (2.10 ± 0.76%), cooking loss (35.0 ± 0.41%), C18:1 (28.2 ± 0.65%), and C18:3ω3 (2.60 ± 0.51%) appeared in group 6 (P < 0.05) as well. Overall, the optimum concentration of 160 mg/L supplemental boron improved ostrich growth performance and meat quality; however, high concentrations of boron decreased both performance and meat quality.
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Affiliation(s)
- Wei Wang
- College of Animal Science and Veterinary Medicine, Huazhong Agricultural University , Wuhan 430070, People's Republic of China
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Üstündağ A, Behm C, Föllmann W, Duydu Y, Degen GH. Protective effect of boric acid on lead- and cadmium-induced genotoxicity in V79 cells. Arch Toxicol 2014; 88:1281-9. [DOI: 10.1007/s00204-014-1235-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 03/24/2014] [Indexed: 02/08/2023]
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53
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Hu Q, Li S, Qiao E, Tang Z, Jin E, Jin G, Gu Y. Effects of boron on structure and antioxidative activities of spleen in rats. Biol Trace Elem Res 2014; 158:73-80. [PMID: 24497086 DOI: 10.1007/s12011-014-9899-5] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 01/14/2014] [Indexed: 12/01/2022]
Abstract
In order to determine the relationship between boron and development of the spleen, especially in the promoting biological effects, we examined the effects of different levels of boron on weight, organ index, microstructure, and antioxidative activities of the spleen in rats. Sprague-Dawley (SD) rats were selected and treated with different concentrations of boron, and then, the organs were resected and weighed. One half of the tissue was fixed and embedded in paraffin to observe tissue structure changes. The other half of the tissue was homogenated for determining the antioxidant activities. The results showed that 40 mg/L of boron could increase weight, organ indexes, and antioxidant capacity of spleens and improve the spleen tissue structure, while the boron concentration above 80 mg/L could decrease weight, organ indexes, and antioxidant capacity of spleens and damage the spleen tissue structure. The higher the concentration, the more serious the damage was. Especially at the concentration of 640 mg/L, it could significantly inhibit the development of the spleen and even exhibit toxic effect. Hence, low boron concentration played a protective role in the development of the spleen, while high boron concentration could damage the organs and even produce toxic effect.
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Affiliation(s)
- Qianqian Hu
- Anhui Science and Technology University, Fengyang, China
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Abstract
OBJECTIVE The aim was to study the effects of boric acid (BA) and 2-aminoethoxydiphenyl borate (2-APB) on oxidative stress and inflammation in an experimental necrotizing enterocolitis (NEC) rat model. METHODS Experimental NEC was induced in 40 newborn Sprague-Dawley rats by asphyxia and hypothermia applied in 3 consecutive days. Rats were subdivided into 4 subgroups as NEC, NEC+BA, NEC+2-APB, and controls. BA and 2-APB were applied daily before the procedure. Serum total antioxidant status, superoxide dismutase (SOD), tumor necrosis factor (TNF)-α, interleukin (IL)-6, and erythrocyte glutathione (GSH) levels were measured. Pathological changes for NEC in intestinal architecture were evaluated by a grading system. RESULTS Pretreatment with BA and 2-APB resulted in a decrease in NEC incidence. In all of the NEC groups, decreased serum levels of GSH and SOD were measured. Boron limited GSH consumption but had no effect on SOD levels. Total antioxidant status levels were not statistically different among groups. In our experimental NEC model, BA, but not 2-APB, prevented the increase of TNF-α. Pretreatment with BA and 2-APB downregulated the activity levels of IL-6 in NEC. CONCLUSIONS In the experimental NEC model, BA and 2-APB partly prevent NEC formation, modulate the oxidative stress parameters, bring a significant decrease in GSH consumption, and enhance the antioxidant defense mechanism, but have no effect on total antioxidant status. BA inhibits the hypoxia and hypothermia-induced increase in both IL-6 and TNF-a, but 2-APB only in IL-6. Boron may be beneficial in preventing NEC.
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Cui X, Gu Y, Li L, Wang H, Xie Z, Luo S, Zhou N, Huang W, Rahaman MN. In vitro bioactivity, cytocompatibility, and antibiotic release profile of gentamicin sulfate-loaded borate bioactive glass/chitosan composites. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2013; 24:2391-2403. [PMID: 23820937 DOI: 10.1007/s10856-013-4996-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 06/17/2013] [Indexed: 06/02/2023]
Abstract
Borate bioactive glass-based composites have been attracting interest recently as an osteoconductive carrier material for local antibiotic delivery. In the present study, composites composed of borate bioactive glass particles bonded with a chitosan matrix were prepared and evaluated in vitro as a carrier for gentamicin sulfate. The bioactivity, degradation, drug release profile, and compressive strength of the composite carrier system were studied as a function of immersion time in phosphate-buffered saline at 37 °C. The cytocompatibility of the gentamicin sulfate-loaded composite carrier was evaluated using assays of cell proliferation and alkaline phosphatase activity of osteogenic MC3T3-E1 cells. Sustained release of gentamicin sulfate occurred over ~28 days in PBS, while the bioactive glass converted continuously to hydroxyapatite. The compressive strength of the composite loaded with gentamicin sulfate decreased from the as-fabricated value of 24 ± 3 MPa to ~8 MPa after immersion for 14 days in PBS. Extracts of the soluble ionic products of the borate glass/chitosan composites enhanced the proliferation and alkaline phosphatase activity of MC3T3-E1 cells. These results indicate that the gentamicin sulfate-loaded composite composed of chitosan-bonded borate bioactive glass particles could be useful clinically as an osteoconductive carrier material for treating bone infection.
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Affiliation(s)
- Xu Cui
- Institute of Bioengineering and Information Technology Materials, Tongji University, Shanghai, 200092, China
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56
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Namuslu M, Balci M, Coşkun M, Yağci R, Cimen B, Çetin A, Ayyildiz A, Erdamar H, Yiğitoğlu R. Investigation of trace elements in pterygium tissue. Curr Eye Res 2013; 38:526-30. [PMID: 23432702 DOI: 10.3109/02713683.2013.766755] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
PURPOSE In this study, we compare the concentrations of the essential trace elements chromium (Cr), copper (Cu), selenium (Se), manganese (Mn), boron (B) and zinc (Zn) in both pterygium and normal conjunctiva and investigate the role they play in the development of pterygium. METHODS Included in the study were 38 patients with pterygium and 38 control patients in matching age groups who had been operated on for strabismus or cataracts and in whom conjunctiva samples were collected from the nasal limbus area. All conjunctiva samples were kept at -80 °C until the performance of the biochemical investigations. The B, Cr, Mn, Cu, Zn and Se levels in the samples were then measured. The levels of all tissue trace elements were determined by using Agilent 7500a Inductively Coupled Plasma-Mass Spectrometer (Agilent Technologies, Santa Clara, CA). RESULTS Cr, Mn, Zn and Se levels are significantly lower in the study group as compared to those of the control group (p < 0.001 for all four values). Regarding the level of B, there was no significant difference between the groups. The Cu levels of almost all subjects in the control group and all subjects in the pterygium group were under the detection limit. CONCLUSIONS These findings indicate that remarkable differences in Mn, Zn, Se and Cr levels exist in pterygium tissues. Further investigation of electrolyte composition of the conjunctiva is needed to understand the genesis and developmental mechanism of pterygium.
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Affiliation(s)
- Mehmet Namuslu
- Department of Medical Biochemistry, Medical School, Fatih University, Ankara, Turkey
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57
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Kabu M, Akosman MS. Biological effects of boron. REVIEWS OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2013; 225:57-75. [PMID: 23494556 DOI: 10.1007/978-1-4614-6470-9_2] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Mustafa Kabu
- Department of Internal Medicine, Faculty of Veterinary Medicine, Afyon Kocatepe University, ANS Campus, 03200, Afyonkarahisar, Turkey,
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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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59
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Turkez H, Geyikoglu F, Tatar A, Keles MS, Kaplan I. The effects of some boron compounds against heavy metal toxicity in human blood. ACTA ACUST UNITED AC 2012; 64:93-101. [PMID: 20663653 DOI: 10.1016/j.etp.2010.06.011] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2009] [Revised: 06/04/2010] [Accepted: 06/24/2010] [Indexed: 12/15/2022]
Affiliation(s)
- Hasan Turkez
- Department of Biology, Faculty of Science, Atatürk University, Erzurum, Turkey.
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60
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Scorei RI, Rotaru P. Calcium fructoborate--potential anti-inflammatory agent. Biol Trace Elem Res 2011; 143:1223-38. [PMID: 21274653 DOI: 10.1007/s12011-011-8972-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2010] [Accepted: 01/13/2011] [Indexed: 12/28/2022]
Abstract
Calcium fructoborate is a boron-based nutritional supplement. Its chemical structure is similar to one of the natural forms of boron such as bis-manitol, bis-sorbitol, bis-fructose, and bis-sucrose borate complexes found in edible plants. In vitro studies revealed that calcium fructoborate is a superoxide ion scavenger and anti-inflammatory agent. It may influence macrophage production of inflammatory mediators, can be beneficial for the suppression of cytokine production, and inhibits progression of endotoxin-associated diseases, as well as the boric acid and other boron sources. The mechanisms by which calcium fructoborate exerts its beneficial anti-inflammatory effects are not entirely clear, but some of its molecular biological in vitro activities are understood: inhibition of the superoxide within the cell; inhibition of the interleukin-1β, interleukin-6, and nitric oxide release in the culture media; and increase of the tumor necrosis factor-α production. Also, calcium fructoborate has no effects on lipopolysaccharide-induced cyclooxygenase-2 protein express. The studies on animals and humans with a dose range of 1-7 mg calcium fructoborate (0.025-0.175 mg elemental boron)/kg body weight/day exhibited a good anti-inflammatory activity, and it also seemed to have negligible adverse effect on humans.
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Affiliation(s)
- Romulus Ion Scorei
- Department of Biochemistry, University of Craiova, A.I. Cuza Str., Nr. 13, Craiova, Romania.
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61
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Ying X, Cheng S, Wang W, Lin Z, Chen Q, Zhang W, Kou D, Shen Y, Cheng X, Rompis FA, Peng L, Zhu Lu C. Effect of boron on osteogenic differentiation of human bone marrow stromal cells. Biol Trace Elem Res 2011; 144:306-15. [PMID: 21625915 DOI: 10.1007/s12011-011-9094-x] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Accepted: 05/19/2011] [Indexed: 01/09/2023]
Abstract
Bone marrow stromal cells (BMSCs) have been well established as an ideal source of cell-based therapy for bone tissue engineering applications. Boron (B) is a notable trace element in humans; so far, the effects of boron on the osteogenic differentiation of BMSCs have not been reported. The aim of this study was to evaluate the effects of boron (0, 1, 10,100, and 1,000 ng/ml) on osteogenic differentiation of human BMSCs. In this study, BMSCs proliferation was analyzed by cell counting kit-8 (CCK8) assay, and cell osteogenic differentiation was evaluated by alkaline phosphatase (ALP) activity assay, Von Kossa staining, and real-time PCR. The results indicated that the proliferation of BMSCs was no different from the control group when added with B at the concentration of 1, 10, and 100 ng/ml respectively (P > 0.05); in contrast, 1,000 ng/ml B inhibited the proliferation of BMSCs at days 4, 7, and 14 (P < 0.05). By ALP staining, we discovered that BMSCs treated with 10 and 100 ng/ml B presented a higher ALP activity compared with control (P < 0.05). By real-time PCR, we detected the messenger RNA expression of ALP, osteocalcin, collagen type I, and bone morphogenetic proteins 7 were also increased in 10 and 100 ng/ml B treatment groups (P < 0.05). The calcium depositions were increased in 1 and 10 ng/ml B treatment groups (P < 0.05). Taken all together, it was the first time to report that B could increase osteogenic effect by stimulating osteogenic differentiation-related marker gene synthesis during the proliferation and differentiation phase in human BMSCs and could be a promising approach for enhancing osteogenic capacity of cell-based construction in bone tissue engineering.
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Affiliation(s)
- Xiaozhou Ying
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical College, 109 Xue Yuan Xi Road, Wenzhou, 325000, China
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Uysal T, Ustdal A, Sonmez MF, Ozturk F. Stimulation of Bone Formation by Dietary Boron in an Orthopedically Expanded Suture in Rabbits. Angle Orthod 2009; 79:984-90. [DOI: 10.2319/112708-604.1] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2008] [Accepted: 12/01/2008] [Indexed: 11/23/2022] Open
Abstract
Abstract
Objective: To evaluate the effects of dietary boron on bone regeneration in rabbits in response to expansion of the midpalatal suture during different retention periods.
Materials and Methods: Twenty-eight 12-week-old New Zealand white male rabbits were separated into four equal groups: group 1 (B+10) and group 2 (B−10) had retention periods of 10 days with or without boron intake, respectively. Group 3 (B+20, with boron) and group 4 (B−20, without boron) were retained for 20 days. All groups had a 5-day expansion period. For both B+ groups, boron was prepared in distilled water and given to the rabbits during their (1) nursery phase (40 days), (2) expansion phase, and (3) retention period at a dosage of 3 mg/kg daily by oral gavage. Bone regeneration in the midpalatal suture was evaluated by a bone histomorphometric method, and the mineralized area (Md.Ar), fibrosis area (Fb.Ar), mineralized area/fibrosis area (Md.Ar/Fb.Ar), bone area (B.Ar) and osteoblast number (N.Ob) parameters were evaluated.
Results: Statistical analysis showed significant differences between groups for all investigated measurements. Md.Ar (P < .01), Md.Ar/Fb.Ar (P < .001), B.Ar (P < .01), and N.Ob (P < .01) parameters were increased and Fb.Ar (P < .01) was decreased in groups B+10 and B+20. No significant differences were observed during an additional 10-day retention period in all groups (P < .05).
Conclusions: Boron has a positive effect on the early phase of bone regeneration of the midpalatal suture in response to expansion and may be beneficial in routine maxillary expansion procedures.
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Affiliation(s)
- Tancan Uysal
- a Associate Professor and Chair, Department of Orthodontics, Faculty of Dentistry, Erciyes University, Kayseri, Turkey
| | - Ayca Ustdal
- b Research Assistant, Erciyes University, Faculty of Dentistry, Department of Orthodontics, Kayseri, Turkey
| | - Mehmet Fatih Sonmez
- c Assistant Professor, Department of Histology and Embryology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
| | - Figen Ozturk
- d Professor and Chair, Department of Pathology, Faculty of Medicine, Erciyes University, Kayseri, Turkey
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63
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Naghii MR, Mofid M. Elevation of biosynthesis of endogenous 17‐B oestradiol by boron supplementation: One possible role of dietary boron consumption in humans. ACTA ACUST UNITED AC 2009. [DOI: 10.1080/13590840802150845] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Geyikoglu F, Turkez H. Boron compounds reduce vanadium tetraoxide genotoxicity in human lymphocytes. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2008; 26:342-347. [PMID: 21791386 DOI: 10.1016/j.etap.2008.07.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2008] [Revised: 06/01/2008] [Accepted: 07/07/2008] [Indexed: 05/31/2023]
Abstract
Vanadium has potential medical and pharmacological uses although it may also show genotoxic effects. Biological effects of boron are defined, but its interaction with vanadium is not known for therapeutic uses. The objective of present study was especially to determine whether boron compounds (boric acid and borax) conferred the protection against vanadium(IV) tetraoxide genotoxicity. After the application of vanadium (5, 10 and 20mg/l) and boron compounds (5 and 10mg/l), blood cultures were assessed by genetic endpoints and total antioxidant capacity (TAC). According to our results, vanadium(IV) tetraoxide induced a reduction in proliferation index (PI). Besides, the frequencies of sister-chromatid exchanges (SCEs), micronuclei (MN) rates and chromosomal aberrations (CAs) in peripheral lymphocytes were significantly increased by vanadium(IV) tetraoxide (10 and 20mg/l) compared to controls. On the other hand, boric acid and borax did not show cytotoxic and genotoxic effects at the concentrations tested. Moreover, these compounds elevated TAC in erythrocytes. The order of anti-genotoxicity efficacy against vanadium was boric acid and borax, respectively. In conclusion, boron compounds have been shown to protect vanadium-induced DNA damage in vitro for the first time.
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Affiliation(s)
- Fatime Geyikoglu
- Department of Biology, Faculty of Arts and Sciences, Atatürk University, Erzurum 25240, Turkey
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65
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Sabuncuoglu BT, Kocaturk PA, Yaman O, Kavas GO, Tekelioglu M. Effects of Subacute Boric Acid Administration on Rat Kidney Tissue. Clin Toxicol (Phila) 2008; 44:249-53. [PMID: 16749541 DOI: 10.1080/15563650600584386] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
BACKGROUND/AIMS Boron is used in manufacturing processes and numerous consumer products. Clarification of boron toxicity is important because of industrial and consumer exposure to boron and boron-containing compounds. The aim of this study was to observe effects of subacute boric acid administration on rat kidney tissue. MATERIALS AND METHODS A total of 96 male albino Sprague-Dawley rats were used in this study. Seventy-two rats were selected for the experimental group and 24 rats constituted the control group. Experimental group rats were divided into three groups for exposure to three different doses of orally administered boric acid (100-275-400 mg/kg/day). Kidney tissues were removed at the 10th, 30th, and 45th day after sacrificing the rats. Kidney weights, kidney boron concentration and histopathological changes were determined. RESULTS In the experimental group, a significant accumulation of boron in kidney tissue was seen, but there was a significant drop in boron concentration on the 45th day compared with the 30th day. Histopathological degenerative changes were observed especially in the proximal tubule cells that were dose- and time-dependent. CONCLUSION Subacute boric acid exposure caused dose-dependent histopathological changes in kidney tissue.
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66
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Bradke TM, Hall C, Carper SW, Plopper GE. Phenylboronic acid selectively inhibits human prostate and breast cancer cell migration and decreases viability. Cell Adh Migr 2008; 2:153-60. [PMID: 19262119 DOI: 10.4161/cam.2.3.6484] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We compared the in vitro effect of boric acid (BA) versus phenylboronic acid (PBA) on the migration of prostate and breast cancer cell lines and non-tumorigenic cells from the same tissues. Treatment at 24 hours with BA (< or =500 microM) did not inhibit chemotaxis on fibronectin in any cell line. However, treatment over the same time course with concentrations of PBA as low as 1 muM significantly inhibited cancer cell migration without effecting non-tumorigenic cell lines. The compounds did not affect cell adhesion or viability at 24 hours but did alter morphology; both decreased cancer cell viability at eight days. These results suggest that PBA is more potent than BA in targeting the metastatic and proliferative properties of cancer cells.
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Affiliation(s)
- Tiffany M Bradke
- Department of Biology, Rensselaer Polytechnic Institute, Troy, New York 12180-3596, USA
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67
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Mahabir S, Spitz MR, Barrera SL, Dong YQ, Eastham C, Forman MR. Dietary boron and hormone replacement therapy as risk factors for lung cancer in women. Am J Epidemiol 2008; 167:1070-80. [PMID: 18343880 DOI: 10.1093/aje/kwn021] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Hormone replacement therapy (HRT) may reduce lung cancer risk. Dietary boron may have actions similar to those of HRT; however, no previous study has reported the associations between dietary boron intake and lung cancer risk or the joint effects of boron intake and HRT use on lung cancer risk. The authors examined the associations between boron intake and the joint effects of boron intake and HRT on lung cancer risk in women. In an ongoing case-control study in Houston, Texas (July 1995 through April 2005, end date for this analysis), 763 women were diagnosed with lung cancer, and 838 were matched healthy controls with data on both diet and HRT. Multiple logistic regression analyses were conducted to assess the associations between dietary boron and HRT with lung cancer risk. After adjustment for potential confounders, the odds ratios for lung cancer with decreasing quartiles of dietary boron intake were 1.0, 1.39 (95% confidence interval (CI): 1.02, 1.90), 1.64 (95% CI: 1.20, 2.24), and 1.95 (95% CI: 1.42, 2.68) mg/day, respectively, for all women (p(trend) < 0.0001). In joint-effects analyses, compared with women with high dietary boron intake who used HRT, the odds ratio for lung cancer for low dietary boron intake and no HRT use was 2.07 (95% CI: 1.53, 2.81). Boron intake was inversely associated with lung cancer in women, whereas women who consumed low boron and did not use HRT were at substantial increased odds.
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Affiliation(s)
- S Mahabir
- Department of Epidemiology, University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA.
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68
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Cao J, Jiang L, Zhang X, Yao X, Geng C, Xue X, Zhong L. Boric acid inhibits LPS-induced TNF-alpha formation through a thiol-dependent mechanism in THP-1 cells. J Trace Elem Med Biol 2008; 22:189-95. [PMID: 18755394 DOI: 10.1016/j.jtemb.2008.03.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2007] [Revised: 02/27/2008] [Accepted: 03/24/2008] [Indexed: 10/22/2022]
Abstract
Oxidative stress plays an important role during inflammatory diseases and antioxidant administration to diminish oxidative stress may arrest inflammatory processes. Boron has been implicated to modulate certain inflammatory mediators and regulate inflammatory processes. Here we investigated the role of the tripeptide glutathione (GSH) in modulating the effects of boric acid (BA) on lipopolysaccharide (LPS)-induced tumor necrosis factor alpha (TNF-alpha) formation in THP-1 monocytes. Interestingly, we found that BA had no significant effects on both TNF-alpha production and intracellular GSH contents, whereas it could inhibit LPS-induced TNF-alpha formation and ameliorated the d,l-buthionine-S,R-sulfoximine (BSO)-induced GSH depletion. Twenty-four hour incubation with BSO induced a decrease of the intracellular GSH and an increase of TNF-alpha. Treatment with N-acetyl-l-cysteine (NAC) did not significantly increase intracellular content of GSH but significantly reduced the secretion of TNF-alpha. BSO-pretreatment for 24h enhanced the LPS-induced secretion and mRNA expression of TNF-alpha further. BA inhibited LPS-stimulated TNF-alpha formation was also seen after GSH depletion by BSO. These results indicate that BA may have anti-inflammatory effect in the LPS-stimulated inflammation and the effect of BA on TNF-alpha secretion may be induced via a thiol-dependent mechanism.
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Affiliation(s)
- Jun Cao
- Department of Toxicology, Dalian Medical University, 9 Lushunnan Road, Dalian 116044, China
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69
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Bourgeois AC, Scott ME, Sabally K, Koski KG. Low dietary boron reduces parasite (nematoda) survival and alters cytokine profiles but the infection modifies liver minerals in mice. J Nutr 2007; 137:2080-6. [PMID: 17709446 DOI: 10.1093/jn/137.9.2080] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Although boron (B) is an essential trace mineral, any interactions that it may have with gastrointestinal (GI) nematode infections are unknown. This study explored whether low dietary B would: 1) alter survival or reproduction of Heligmosomoides bakeri (Nematoda); 2) modify the resulting cytokine response to this parasitic infection; or 3) influence liver mineral concentrations in the infected host. Balb/c mice were fed either a low-B (0.2 microg B/g), marginal (2.0 microg B/g), or control (12.0 microg B/g) diet. Diets commenced 3 wk before a primary infection and were fed for 4 wk (primary infection protocol) and 8-9 wk (challenge infection protocol). Mice were killed 6 d post-primary infection (d6ppi), or dewormed then reinfected (challenge infection protocol) and killed 14 or 21 d post-challenge infection (d14pci or d21pci, respectively). Low and marginal dietary B intakes impaired survival of the parasite, reduced intestinal inflammation, and modulated a broad range of cytokines and chemokines despite similar liver B concentrations in diet groups. Compared with control mice, cytokine production was lower following low and marginal B intakes at d6ppi but was elevated at d21pci. Serum alkaline phosphatase was higher at d6ppi than at d14pci and d21pci. Compared with d14pci, liver zinc, iron, and B concentrations were reduced at d21pci when worm numbers were also lower, whereas concentrations of sodium, potassium, molybdenum, chromium, and sulfur were higher. This study shows that parasite survival and cytokine and inflammatory responses are modified by dietary B intake but indicates that a GI nematode infection alters liver mineral concentrations.
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Affiliation(s)
- Annie-Claude Bourgeois
- Institute of Parasitology, McGill University (Macdonald Campus), Ste-Anne de Bellevue, Quebec, Canada H9X 3V9
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Korkmaz M, Sayli U, Sayli BS, Bakirdere S, Titretir S, Yavuz Ataman O, Keskin S. Estimation of human daily boron exposure in a boron-rich area. Br J Nutr 2007; 98:571-5. [PMID: 17419890 DOI: 10.1017/s000711450770911x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Although, the safe limits of human daily boron (B) exposure are not absolutely clear, there is a growing interest in B and its effects on human health. The aim of the present study was to estimate daily B exposure in 66 males in Turkey living in a B-rich area using water containing at least 2 mg/l boron, with an average age of 38·55 (se 1·66) years and an average number of years of residence in the B-rich area of 35·89 (se 1·73). Another group of males (n 57), living in the city centres of Balıkesir and Ankara, were taken as controls; the average age and number of years of residence for this group were 29·44 (se 1·43) and 10·26 (se 1·83) years, respectively. As it is assumed that the B level in urine reflects daily B exposure, the amount of urinary B of both the study and control groups was analysed by using an inductively coupled plasma optical emission spectrometry (ICP-OES) technique. The average daily B exposure value was calculated as 6·77 (se 0·47) mg in the study group and 1·26 (se 0·1) mg in the controls. The results of this study are expected to contribute to creating a reference value for a safe daily B exposure.
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Affiliation(s)
- Mehmet Korkmaz
- Department of Medical Biology, Faculty of Medicine,Yüzüncü Yil University, 65200 Van, Turkey.
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Scorei R, Ciubar R, Iancu C, Mitran V, Cimpean A, Iordachescu D. In vitro effects of calcium fructoborate on fMLP-stimulated human neutrophil granulocytes. Biol Trace Elem Res 2007; 118:27-37. [PMID: 17848728 DOI: 10.1007/s12011-007-0019-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2006] [Revised: 11/30/1999] [Accepted: 12/20/2006] [Indexed: 10/23/2022]
Abstract
Discovery of naturally occurring boron complexes with organic compounds containing hydroxyl groups, sugars, and polysaccharides, adenosine-5-phosphate, pyridoxine, riboflavin, dehydroascorbic acid, and pyridine nucleotides led to the reassessment of the biochemical role of boron. Boron's anti-inflammatory actions were claimed but not yet demonstrated. This study investigated the effects of calcium fructoborate (CF) on the human polymorphonuclear neutrophils (PMN) that play a central role in the inflammatory response. Our results demonstrated that CF exposure induced a dose-dependent decrease in cell viability. Treatment of PMN cells, for 24 h, with 22,500 microM CF led to a decrease in cell viability by 61.1%, an inhibition of respiratory burst by 92.9% in the case of fMLP-stimulated cells, a diminution of intracellular level of superoxide anion with 59.3%, and a stimulation of superoxide dismutase activity by 72% in unstimulated PMN cells. Altogether, these results suggest the antioxidant and anti-inflammatory properties of CF.
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Affiliation(s)
- R Scorei
- Department of Biochemistry, University of Craiova, 13 A.I. Cuza, Craiova, 200585, Romania.
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Pieczyńska J, Grajeta H, Weber R, Biernat J. Dietary carbohydrate content influences boron's effect on lipid and protein indices in rats. Biol Trace Elem Res 2007; 115:137-46. [PMID: 17435257 DOI: 10.1007/bf02686025] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2006] [Revised: 06/07/2006] [Accepted: 06/16/2006] [Indexed: 10/22/2022]
Abstract
The aim of the study was to establish whether an excess or deficiency of dietary carbohydrates would influence the effect of boron (B) on lipid, protein, and glucose metabolism in laboratory rats. Sixty male Buffalo rats were used in the study, divided into six groups fed a control diet or a lower high-carbohydrate diet with or without a B supplement (3 mg B/kg fodder). The hemoglobin concentration and hematocrit were assessed in whole-blood samples, and the total protein, albumin, creatine, glucose, total lipid, and high-density lipoprotein (HDL) cholesterol contents in the serum were established. The total cholesterol and triacylglycerol contents in liver lipid extracts were also measured. A low carbohydrate content in a B-supplemented diet led to an increase in the total protein and albumin contents in the serum of the rats compared to the levels for the rats on the control and high-carbohydrate B supplemented diets. Under conditions of an excess or deficiency of carbohydrates in the diet, B did not significantly influence the cholesterol and total lipid contents in the serum. Boron's influence on the other metabolic indexes (glucose, HDL cholesterol, and triacylglycerol contents in the serum; cholesterol and triacylglycerol contents in the liver) was unaffected by the carbohydrate content in the diet.
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Affiliation(s)
- Joanna Pieczyńska
- Department of Food Science and Nutrition, Wroclaw Medical University, pl Nankiera 1, Wroclaw, Poland
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Korkmaz M, Uzgören E, Bakirdere S, Aydin F, Ataman OY. Effects of dietary boron on cervical cytopathology and on micronucleus frequency in exfoliated buccal cells. ENVIRONMENTAL TOXICOLOGY 2007; 22:17-25. [PMID: 17295277 DOI: 10.1002/tox.20229] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Recent evidence indicates that boron and borates may have anticarcinogenic properties. In this study, we have investigated the incidence of adverse cytological findings in cervical smears and the micronucleus (MN) frequency in women living in boron-rich and boron-poor regions. Cervical smears were prepared from 1059 women with low socioeconomic status; 472 of the women lived in relatively boron-rich rural areas, while 587 lived in relatively boron-poor regions. The average and standard deviation values for the age of the women screened with the cervical Pap smear test were 41.55 +/- 8.38. The mean dietary intake of boron was 8.41 mg/day for women from the boron-rich regions, and 1.26 mg/day for women living in the boron-poor regions (P < 0.0001). Women from the boron-rich regions had no cytopathological indications of cervical cancer, while there were cytopathological findings for 15 women from the boron-poor areas (chi(2) = 10.473, P < 0.05). Sixty women, 30 from each region, were chosen for evaluating MN frequencies in exfoliated buccal cells. MN frequencies for women from the boron-rich and boron-poor regions were not significantly different (t = -0.294, P > 0.05). Also, there were no significant correlations between age and MN frequency for women from both the boron-rich (r = 0.133, P = 0.48, P > 0.05) and boron-poor (r = -0.033, P = 0.861, P > 0.05) regions. The results suggest that ingestion of boron in the drinking water decreases the incidence of cervical cancer-related histopathological findings. There was no correlation between the pathological findings from the cervical smears and buccal cell MN frequency suggesting that the two study populations were exposed equally to gentotoxic agents. Nonetheless, cervical cancer-related histopathological findings should be validated by other researchers.
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Affiliation(s)
- Mehmet Korkmaz
- Department of Medical Biology, Faculty of Medicine, Yüzüncüyil University, 65200 Van, Turkey.
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Pawa S, Ali S. Boron ameliorates fulminant hepatic failure by counteracting the changes associated with the oxidative stress. Chem Biol Interact 2006; 160:89-98. [PMID: 16442087 DOI: 10.1016/j.cbi.2005.12.002] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2005] [Revised: 11/30/2005] [Accepted: 12/05/2005] [Indexed: 11/29/2022]
Abstract
Boron has well-defined biological effects and may be of therapeutic benefit. In the current paper, the effect of boron in the form of borax was tested in experimental animal model of fulminant hepatic failure (FHF). The syndrome was induced in female Wistar rats by three consecutive daily intraperitoneal injections of thioacetamide (400 mg/kg). In the treatment groups, rats received borax (4.0 mg/kg) orally for three consecutive days followed by thioacetamide. The group administered with thioacetamide plus vehicle, and the borax alone treated rats served as controls. In all groups, rats were terminated 4 h after administering the last dose of thioacetamide, and the tissue/serum was used to measure hepatic levels of thiobarbituric acid reactive substances, reduced glutathione, and various enzymes associated with oxidative stress including peroxide metabolizing enzymes and xanthine oxidase. In thioacetamide treated group, many fold increase in the activity level of serum marker enzymes suggesting FHF was observed that could be brought down significantly in rats receiving boron. Modulation and a correlation in the activity level of oxidant generating enzyme and lipid peroxidation as well as hepatic glutathione level was also observed in rats receiving thioacetamide. In the group receiving boron followed by thioacetamide, these changes could be minimized moderately. The activity level of the peroxide metabolizing enzymes and the tripeptide glutathione, which decreased following thioacetamide treatment were moderately elevated in the group receiving boron followed by thioacetamide. The data clearly shows that borax partly normalizes the liver and offsets the deleterious effects observed in FHF by modulating the oxidative stress parameters.
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Affiliation(s)
- Sonica Pawa
- Department of Biochemistry, Faculty of Science, Jamia Hamdard, Hamdard University, Hamdard Nagar, New Delhi 1100 62, India
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Bakken NA, Hunt CD. Dietary Boron Decreases Peak Pancreatic In Situ Insulin Release in Chicks and Plasma Insulin Concentrations in Rats Regardless of Vitamin D or Magnesium Status. J Nutr 2003; 133:3577-83. [PMID: 14608076 DOI: 10.1093/jn/133.11.3577] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Because dietary boron deprivation induces hyperinsulinemia in vitamin D-deprived rats, the influence of dietary boron on insulin metabolism as modified by nutritional stressors was examined in two animal models. Male weanling Sprague-Dawley rats were assigned to each of four (Experiment 1) or 8 (Experiment 2) dietary groups for 35 d: the basal diet (< 0.2 mg B; <1.0 mg Mg/kg) was supplemented with boron (as orthoboric acid) to contain <0.2 or 2.0 (a physiologic amount) mg B/kg; with magnesium (as magnesium acetate), at 100 (inadequate) or 360-400 (adequate) mg/kg; and with cholecalciferol [vitamin D-3; 25 microg/kg for study length (Experiment 2), or, depleted for 16-17 d then repleted until end of experiment (Experiments 1 and 2)]. In the rat model, boron reduced plasma insulin (Experiment 1, P < 0.002; Experiment 2, P < 0.03), but did not change glucose concentrations regardless of vitamin D-3 or magnesium status. Cockerels (1 d old) were fed a ground corn, high protein casein and corn oil-based basal diet (low boron; 0.3 mg B/kg) supplemented with boron as orthoboric acid to contain 0.3 or 1.65 mg/kg (a physiologic amount) and vitamin D-3 at 3.13 (inadequate) or 15.60 (adequate) microg/kg. In the chick model, boron decreased (P < 0.045) in situ peak pancreatic insulin release at 26-37 d of age regardless of vitamin D-3 nutriture. These results suggest that physiologic amounts of boron may help reduce the amount of insulin required to maintain plasma glucose.
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Affiliation(s)
- Naomi A Bakken
- U.S. Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, Grand Forks, ND 58202, USA
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Hunt CD. Dietary boron: An overview of the evidence for its role in immune function. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/jtra.10041] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gallardo-Williams MT, Maronpot RR, Wine RN, Brunssen SH, Chapin RE. Inhibition of the enzymatic activity of prostate-specific antigen by boric acid and 3-nitrophenyl boronic acid. Prostate 2003; 54:44-9. [PMID: 12481254 DOI: 10.1002/pros.10166] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND Prostate specific antigen (PSA) is a well-established marker of prostate cancer, but it can also degrade extracellular matrix proteins such as fibronectin and could be involved in tumor progression and metastasis. In this study, we have addressed the use of boric acid and 3-nitrophenyl boronic acid (NPBA) as PSA inhibitors in vitro. METHODS The inhibition of PSA by boric acid was studied by using specific fluorogenic substrates. Fibronectin, a biologically relevant substrate for PSA, was used as a substrate in a zymographic assay, and the degradation of fibronectin by PSA in the presence of boric acid and NPBA was followed by Western Blot. RESULTS Low concentrations of boric acid partially inhibited the proteolytic activity of PSA toward a synthetic fluorogenic substrate. Also, by Western blot, we have found significant inhibition in the proteolysis of fibronectin by PSA in the presence of boric acid as well as NPBA. Results indicate that the boronated compounds used in this study can be used for the modulation of PSA activity. CONCLUSION PSA activity is inhibited in vitro by boric acid and NPBA. If degradation of fibronectin by PSA were, in fact, an important step in the progression of prostate cancer, then borate-induced inhibition of PSA activity should help reduce the development and proliferation of prostate carcinomas.
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Affiliation(s)
- Maria T Gallardo-Williams
- Laboratory of Molecular Toxicology, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina 27709, USA.
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Ralston NV, Hunt CD. Diadenosine phosphates and S-adenosylmethionine: novel boron binding biomolecules detected by capillary electrophoresis. BIOCHIMICA ET BIOPHYSICA ACTA 2001; 1527:20-30. [PMID: 11420139 DOI: 10.1016/s0304-4165(01)00130-1] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
There is evidence that boron has a physiological role in animals and humans, but the search for boron binding biomolecules has been difficult because useful radioactive boron isotopes do not exist. To overcome this limitation we used capillary electrophoresis to identify and quantify boron binding to biomolecules by detecting the negative charge boron imparts to ligands. The effect of molecular structure and proximal electronic charges of adenosine and molecules with adenosine moieties including S-adenosylmethionine (SAM) and diadenosine polyphosphates (Ap(n)A) were compared. The boron affinity of the test species varied with the rank order SAM congruent with Ap(6)A congruent with Ap(5)A>Ap(4)A>Ap(3)A congruent with NAD(+)>Ap(2)A>NADH congruent with 5'ATP>5'ADP>5'AMP>adenosine>3'AMP congruent with 2'AMP congruent with cAMP congruent with adenine. Test species with vicinal cis-diols bound boron; species without those moieties did not. Boron binding affinity increased when proximal cationic moieties were present. Anionic moieties remote from the cis-hydroxyl binding site also positively influenced boron binding affinity. In the Ap(n)A species, cooperative complexing of boron between the terminal ribose moieties apparently occurred. In these species boron affinity greater than expected for two monocomplexes was observed and binding affinities increased as more phosphate groups (beyond three) were present separating the terminal moieties. Our results indicate that Ap(6)A, Ap(5)A, Ap(4)A, Ap(3)A, and SAM have higher affinities for boron than any other currently recognized boron ligand present in animal tissues including NAD(+).
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Affiliation(s)
- N V Ralston
- United States Department of Agriculture, Agricultural Research Service, Grand Forks Human Nutrition Research Center, 2420 2nd Ave. N., PO Box 9034, 58202-9034, Grand Forks, ND, USA
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Affiliation(s)
- F H Nielsen
- USDA, ARS, Grand Forks Human Nutrition Research Center, Grand Forks, North Dakota 58202-9034, USA.
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Lanoue L, Strong PL, Keen CL. Adverse effects of a low boron environment on the preimplantation development of mouse embryos in vitro. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1520-670x(1999)12:3<235::aid-jtra7>3.0.co;2-n] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hunt CD, Idso JP. Dietary boron as a physiological regulator of the normal inflammatory response: A review and current research progress. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1520-670x(1999)12:3<221::aid-jtra6>3.0.co;2-x] [Citation(s) in RCA: 97] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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