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Sattgast LH, Branscum AJ, Newman N, Gonzales SW, Benton ML, Baker EJ, Grant KA, Turner RT, Iwaniec UT. Ethanol alters the relationship between IGF-1 and bone turnover in male macaques. J Endocrinol 2022; 255:131-141. [PMID: 36194528 PMCID: PMC9651018 DOI: 10.1530/joe-22-0075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Accepted: 10/04/2022] [Indexed: 11/16/2022]
Abstract
Insulin-like growth factor 1 (IGF-1) influences bone turnover. Transient decreases in IGF-I levels and/or bioavailability may contribute to the detrimental effects of alcohol on bone. The goals of this non-human primate study were to i) evaluate the 20-h response of bone turnover markers to ethanol consumption and ii) assess how ethanol consumption influences the relationship between IGF-1 and these markers. Osteocalcin (bone formation), carboxyterminal cross-linking telopeptide of type 1 collagen (CTX, bone resorption), IGF-1, and IGF binding protein 1 (IGFBP-1) were measured in plasma from male rhesus macaques (N = 10, 8.4 ± 0.3 years) obtained at 12:00, 16:00, and 06:00 h during two phases: pre-ethanol (alcohol-naïve) and ethanol access. During the ethanol access phase, monkeys consumed 1.5 g/kg/day ethanol (4% w/v) beginning at 10:00 h. Osteocalcin and CTX were lower, and the ratio of osteocalcin to CTX was higher at each time point during ethanol access compared to the pre-ethanol phase. Pre-ethanol marker levels did not vary across time points, but markers varied during ethanol access. IGF-1 levels, but not IGFBP-1 levels, varied during the pre-ethanol phase. In contrast, IGF-1 levels were stable during ethanol access but IGFBP-1 levels varied. There were positive relationships between IGF-1 and turnover markers during the pre-ethanol phase, but not during ethanol access. In conclusion, chronic ethanol consumption reduces levels of bone turnover markers and blocks the normal positive relationship between IGF-1 and turnover markers and alters the normal relationship between IGF-1 and IGFBP-1. These findings support the hypothesis that chronic alcohol consumption leads to growth hormone/IGF-1 resistance.
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Affiliation(s)
- Lara H. Sattgast
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, USA
| | - Adam J. Branscum
- Biostatistics Program, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, USA
| | - Natali Newman
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Steven W. Gonzales
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | | | - Erich J. Baker
- Department of Computer Science, Baylor University, Waco, TX, USA
| | - Kathleen A. Grant
- Division of Neuroscience, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, OR, USA
| | - Russell T. Turner
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, USA
| | - Urszula T. Iwaniec
- Skeletal Biology Laboratory, School of Biological and Population Health Sciences, Oregon State University, Corvallis, OR, USA
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Marzec-Wróblewska U, Kamiński P, Łakota P, Ludwikowski G, Szymański M, Wasilow K, Stuczyński T, Buciński A, Jerzak L. Determination of Rare Earth Elements in Human Sperm and Association with Semen Quality. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2015; 69:191-201. [PMID: 25762379 PMCID: PMC4490166 DOI: 10.1007/s00244-015-0143-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Accepted: 02/28/2015] [Indexed: 05/11/2023]
Abstract
The aim of the present study was to measure lanthanum (La), cerium (Ce), europium (Eu), and gadolinium (Gd) concentrations in human semen and correlate the results with sperm quality. The median semen content of La was 19.5 µg kg(-1) dry weight (dw) (range 2.27-269), of Ce was 41.9 µg kg(-1) dw (range 4.52 to 167), of Eu was 0.68 µg kg(-1) dw (range 0.06-1.95), of Gd was 3.19 µg kg(-1) dw (range 0.38-12.0), and of calcium (Ca) was 4063 mg kg(-1) dw (range 484-17,191). Concentrations of La, Ce, Eu, Gd, and Ca were significantly lower in nondrinkers' semen than in semen from drinkers. Significant differences were detected between La, Ce, Eu, Gd, and Ca concentrations in semen from nondrinkers and moderate drinkers. Concentrations of La, Ce, and Gd in semen of short-term smokers were significantly lower than those in extremely long-term smokers. Significant differences were also detected between La concentration in semen from a group of short-term smokers and that of a group of long-term smokers. Positive correlations were found between La, Ce, Eu, Gd, and Ca concentrations in semen. La, Ce, Gd, and Ca concentrations in semen were positively associated with progressive motility and percentage of normal spermatozoa. Positive correlations were found between Ca and sperm concentration. Concentrations of La, Ce, and Gd were negatively associated with sperm concentration, whilst Ca concentration was negatively associated with volume of ejaculate. At the examined level, La, Ce, Eu, and Gd did not affect sperm quality, whereas alcohol consumption and smoking might have increased the level of rare earth elements in semen.
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Affiliation(s)
- Urszula Marzec-Wróblewska
- Department of Biopharmacy, Faculty of Pharmacy, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, dr. A. Jurasz St. 2, 85-089 Bydgoszcz, Poland
- Department of Ecology and Environmental Protection, Faculty of Medicine, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, M. Skłodowska-Curie St. 9, 85-094 Bydgoszcz, Poland
| | - Piotr Kamiński
- Department of Ecology and Environmental Protection, Faculty of Medicine, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, M. Skłodowska-Curie St. 9, 85-094 Bydgoszcz, Poland
- Department of Biotechnology, Faculty of Biological Sciences, University of Zielona Góra, Prof. Szafran St. 1, 65-516 Zielona Gora, Poland
| | - Paweł Łakota
- Department of Animal Biotechnology, Faculty of Animal Biology, University of Technology and Life Sciences, Mazowiecka St. 28, 85-084 Bydgoszcz, Poland
| | - Grzegorz Ludwikowski
- Department of Clinical Andrology, Faculty of Medicine, University Hospital No. 2, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, Szpitalna St. 19, 85-092 Bydgoszcz, Poland
| | - Marek Szymański
- Department of Obstetrics, Female Pathology and Oncological Gynecology, University Hospital No. 2, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, Ujejski St. 75, 85-168 Bydgoszcz, Poland
- NZOZ Medical Center Co. Prof. dr. hab. med. Wiesław Szymański, Dr. med. Marek Szymański, Waleniowa St. 24, 85-435 Bydgoszcz, Poland
| | - Karolina Wasilow
- NZOZ Medical Center Co. Prof. dr. hab. med. Wiesław Szymański, Dr. med. Marek Szymański, Waleniowa St. 24, 85-435 Bydgoszcz, Poland
- Family Medicine Clinic, University Hospital No. 2, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, Ujejski St. 75, 85-168 Bydgoszcz, Poland
| | - Tomasz Stuczyński
- Department of Soil Structure, Institute of Agriculture and Soil Cultivation, Czartoryskich St. 8, 24-100 Puławy, Poland
| | - Adam Buciński
- Department of Biopharmacy, Faculty of Pharmacy, Nicolaus Copernicus University in Toruń, Collegium Medicum in Bydgoszcz, dr. A. Jurasz St. 2, 85-089 Bydgoszcz, Poland
| | - Leszek Jerzak
- Department of Nature Protection, Faculty of Biological Sciences, University of Zielona Góra, Prof. Szafran St. 1, 65-516 Zielona Gora, Poland
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Chavassieux P, Serre CM, Vergnaud P, Delmas PD, Meunier PJ. In vitro evaluation of dose-effects of ethanol on human osteoblastic cells. BONE AND MINERAL 1993; 22:95-103. [PMID: 8251769 DOI: 10.1016/s0169-6009(08)80221-8] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Chronic alcoholism represents a high risk for fractures and osteopenia. Previous histomorphometric studies reported a decreased bone formation, but it has never been established whether ethanol has a direct toxic effect on osteoblasts. This present in vitro study was performed on human osteoblast cells derived from bone explants after collagenase digestion. The direct effect of ethanol was determined after 4 days of exposure to various doses, ranging from 0.01 to 5 g/l on the alkaline phosphatase (AP) activity, osteocalcin secretion and [3H]thymidine incorporation. The influence of the duration of exposure to 0.8 g/l ethanol was also determined. A significant and dose-dependent decrease in the cell proliferation was observed. AP activity was significantly decreased by high doses of ethanol (2-5 g/l). A biphasic effect of ethanol was noted on osteocalcin secretion according to the dose: it decreased at doses lower than 0.8 g/l and increased at the highest concentrations. At the dose of 0.8 g/l, whatever the duration of exposure, the decrease of the proliferation was of the same magnitude and no significant change in AP activity was observed. Significant ethanol-induced effects on osteocalcin secretion were observed only after 4 and 8 days of exposure. These data demonstrate that ethanol may have a direct toxic effect on osteoblast activity and proliferation. This could be one of the mechanisms of alcohol-induced osteopenia which has a multifactorial pathophysiology.
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Abstract
Coffee drinking, smoking and especially alcohol abuse are considered to be risk factors for fractures and osteoporosis. Caffeine causes acute increase in urinary calcium excretion, but epidemiological evidence for the effects of coffee consumption on the risk of fractures is contradictory. Many, (but not all) studies point to decreased bone mass or increased fracture risk in smokers. Alcohol abuse is associated with deleterious changes in bone structure detected by histomorphometry, and with a decrease in bone mineral density (BMD). These changes may also be produced by factors commonly associated with alcohol abuse, e.g. nutritional deficiencies, liver damage and hypogonadism. Alcohol, however, has clear-cut direct effects on bone and mineral metabolism. Acute alcohol intoxication causes transitory hypoparathyroidism with resultant hypocalcaemia and hypercalciuria. As assessed by serum osteocalcin levels, prolonged moderate drinking decreases the function of osteoblasts, the bone-forming cells. In addition, chronic alcoholics are characterized by low serum levels of vitamin D metabolites. Thus, alcohol seems to have a direct toxic effect on bone and mineral metabolism. In contrast, it has recently been reported that moderate alcohol consumption by postmenopausal women may have a beneficial effect on bone.
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Affiliation(s)
- K Laitinen
- Research Unit of Alcohol Diseases, University of Helsinki, Finland
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Abstract
Osteocalcin is a small (Mr 5800), very interesting bone specific protein, synthesized by osteoblasts and measured in plasma as a biochemical indicator of bone formation. Many immunoassays for osteocalcin have been developed, including radio- and enzymoimmunoassays, with the use of monoclonal and polyclonal antibodies. These are used in many different clinical settings, including bone, kidney, and liver diseases. However, there is a wide range of published values for plasma osteocalcin concentrations in control and patient samples and this has hindered a more widespread adoption of osteocalcin measurement by clinicians. This review discusses how various immunoassays for osteocalcin may contribute to the wide variation of published values and suggests approaches for the development of standardized assays. For example, epitope specificity and immunoreactivity with multiple forms of osteocalcin and osteocalcin peptides in plasma are discussed. It also includes a recent update on interesting clinical applications of osteocalcin.
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Affiliation(s)
- M J Power
- Dept. of Biochemistry, University College, Galaway, Ireland
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