1
|
Chirinos JA, Lopez-Jaramillo P, Giamarellos-Bourboulis EJ, Dávila-Del-Carpio GH, Bizri AR, Andrade-Villanueva JF, Salman O, Cure-Cure C, Rosado-Santander NR, Cornejo Giraldo MP, González-Hernández LA, Moghnieh R, Angeliki R, Cruz Saldarriaga ME, Pariona M, Medina C, Dimitroulis I, Vlachopoulos C, Gutierrez C, Rodriguez-Mori JE, Gomez-Laiton E, Cotrina Pereyra R, Ravelo Hernández JL, Arbañil H, Accini-Mendoza J, Pérez-Mayorga M, Milionis C, Poulakou G, Sánchez G, Valdivia-Vega R, Villavicencio-Carranza M, Ayala-García RJ, Castro-Callirgos CA, Alfaro Carrasco RM, Garrido Lecca Danos W, Sharkoski T, Greene K, Pourmussa B, Greczylo C, Ortega-Legaspi J, Jacoby D, Chittams J, Katsaounou P, Alexiou Z, Sympardi S, Sweitzer NK, Putt M, Cohen JB. A randomized clinical trial of lipid metabolism modulation with fenofibrate for acute coronavirus disease 2019. Nat Metab 2022; 4:1847-1857. [PMID: 36344766 PMCID: PMC9640855 DOI: 10.1038/s42255-022-00698-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Accepted: 10/21/2022] [Indexed: 11/09/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) cytotoxicity may involve inhibition of peroxisome proliferator-activated receptor alpha. Fenofibrate activates peroxisome proliferator-activated receptor alpha and inhibits SARS-CoV-2 replication in vitro. Whether fenofibrate can be used to treat coronavirus disease 2019 (COVID-19) infection in humans remains unknown. Here, we randomly assigned inpatients and outpatients with COVID-19 within 14 d of symptom onset to 145 mg of oral fenofibrate nanocrystal formulation versus placebo for 10 d, in a double-blinded fashion. The primary endpoint was a severity score whereby participants were ranked across hierarchical tiers incorporating time to death, mechanical ventilation duration, oxygenation, hospitalization and symptom severity and duration. In total, 701 participants were randomized to fenofibrate (n = 351) or placebo (n = 350). The mean age of participants was 49 ± 16 years, 330 (47%) were female, mean body mass index was 28 ± 6 kg/m2 and 102 (15%) had diabetes. Death occurred in 41 participants. Compared with placebo, fenofibrate had no effect on the primary endpoint. The median (interquartile range) rank in the placebo arm was 347 (172, 453) versus 345 (175, 453) in the fenofibrate arm (P = 0.819). There was no difference in secondary and exploratory endpoints, including all-cause death, across arms. There were 61 (17%) adverse events in the placebo arm compared with 46 (13%) in the fenofibrate arm, with slightly higher incidence of gastrointestinal side effects in the fenofibrate group. Overall, among patients with COVID-19, fenofibrate has no significant effect on various clinically relevant outcomes ( NCT04517396 ).
Collapse
Affiliation(s)
- Julio A Chirinos
- Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.
| | - Patricio Lopez-Jaramillo
- Instituto de Investigación MASIRA, Facultad de Ciencias de la Salud, Universidad de Santander, Bucaramanga, Colombia
| | - Evangelos J Giamarellos-Bourboulis
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | | | | | | | - Oday Salman
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
- Department of Medicine, American University of Beirut, Beirut, Lebanon
| | | | | | | | - Luz A González-Hernández
- Unidad de VIH, Hospital Civil de Guadalajara and Universidad de Guadalajara, Guadalajara, Mexico
| | - Rima Moghnieh
- Department of Medicine, Makassed General Hospital, Beirut, Lebanon
| | - Rapti Angeliki
- 6th Department of Pulmonary Medicine, SOTIRIA Athens General Hospital of Chest Disease, Athens, Greece
| | - María E Cruz Saldarriaga
- Centro de Investigación de Enfermedades Infecciosas y Tropicales, Hospital Nacional Adolfo Guevara Velasco, Cuzco, Peru
| | - Marcos Pariona
- Hospital Nacional Edgardo Rebagliati Martins, EsSalud, Lima, Peru
| | - Carola Medina
- Hospital Nacional Edgardo Rebagliati Martins, EsSalud, Lima, Peru
| | - Ioannis Dimitroulis
- 6th Department of Pulmonary Medicine, SOTIRIA Athens General Hospital of Chest Disease, Athens, Greece
| | - Charalambos Vlachopoulos
- 1st Department of Cardiology, National and Kapodistrian University of Athens, Medical School,, Athens, Greece
| | | | - Juan E Rodriguez-Mori
- Department of Nephrology, Hospital Nacional Alberto Sabogal Sologuren, EsSalud, Lima, Peru
| | | | | | | | | | | | | | - Charalampos Milionis
- Department of Internal Medicine, Ioannina University General Hospital, Ioannina, Greece
| | - Garyfallia Poulakou
- 3rd Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | | | | | | | | | | | | | | | - Tiffany Sharkoski
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Katherine Greene
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Bianca Pourmussa
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Candy Greczylo
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Juan Ortega-Legaspi
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Douglas Jacoby
- 4th Department of Internal Medicine, National and Kapodistrian University of Athens, Medical School and Hellenic Institute for the Study of Sepsis, Athens, Greece
| | - Jesse Chittams
- Biostatistics Analysis Core, Office of Nursing Research, University of Pennsylvania School of Nursing, Philadelphia, PA, USA
| | - Paraskevi Katsaounou
- Section of Pneumonology and Respiratory Failure, 1st Department of Critical Care Medicine, National and Kapodistrian University of Athens, Medical School, Athens, Greece
| | - Zoi Alexiou
- 2nd Department of Internal Medicine, THRIASIO Eleusis General Hospital, Eleusis, Greece
| | - Styliani Sympardi
- 1st Department of Internal Medicine, THRIASIO Eleusis General Hospital, Eleusis, Greece
| | - Nancy K Sweitzer
- Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
- Division of Cardiology, University of Arizona, Tucson, AZ, USA
| | - Mary Putt
- Department of Biostatistics, Epidemiology & Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Jordana B Cohen
- Department of Biostatistics, Epidemiology & Informatics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Renal-Electrolyte and Hypertension Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| |
Collapse
|
2
|
Chirinos J, Lopez-Jaramillo P, Giamarellos-Bourboulis E, Dávila-Del-Carpio G, Bizri A, Andrade-Villanueva J, Salman O, Cure-Cure C, Rosado-Santander N, Giraldo MC, González-Hernández L, Moghnieh R, Angeliki R, Saldarriaga MC, Pariona M, Medina C, Dimitroulis I, Vlachopoulos C, Gutierrez C, Rodriguez-Mori J, Gomez-Laiton E, Pereyra R, Hernández JR, Arbañil H, Accini-Mendoza J, Pérez-Mayorga M, Milionis H, Poulakou G, Sánchez G, Valdivia-Vega R, Villavicencio-Carranza M, Ayala-Garcia R, Castro-Callirgos C, Carrasco RA, Danos WL, Sharkoski T, Greene K, Pourmussa B, Greczylo C, Chittams J, Katsaounou P, Alexiou Z, Sympardi S, Sweitzer N, Putt M, Cohen J. A Randomized Trial of Lipid Metabolism Modulation with Fenofibrate for Acute Coronavirus Disease 2019. Res Sq 2022:rs.3.rs-1933913. [PMID: 35982675 PMCID: PMC9387540 DOI: 10.21203/rs.3.rs-1933913/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Background Abnormal cellular lipid metabolism appears to underlie SARS-CoV-2 cytotoxicity and may involve inhibition of peroxisome proliferator activated receptor alpha (PPARα). Fenofibrate, a PPAR-α activator, modulates cellular lipid metabolism. Fenofibric acid has also been shown to affect the dimerization of angiotensin-converting enzyme 2, the cellular receptor for SARS-CoV-2. Fenofibrate and fenofibric acid have been shown to inhibit SARS-CoV-2 replication in cell culture systems in vitro . Methods We randomly assigned 701 participants with COVID-19 within 14 days of symptom onset to 145 mg of fenofibrate (nanocrystal formulation with dose adjustment for renal function or dose-equivalent preparations of micronized fenofibrate or fenofibric acid) vs. placebo for 10 days, in a double-blinded fashion. The primary endpoint was a ranked severity score in which participants were ranked across hierarchical tiers incorporating time to death, duration of mechanical ventilation, oxygenation parameters, subsequent hospitalizations and symptom severity and duration. ClinicalTrials.gov registration: NCT04517396. Findings: Mean age of participants was 49 ± 16 years, 330 (47%) were female, mean BMI was 28 ± 6 kg/m 2 , and 102 (15%) had diabetes mellitus. A total of 41 deaths occurred. Compared with placebo, fenofibrate administration had no effect on the primary endpoint. The median (interquartile range [IQR]) rank in the placebo arm was 347 (172, 453) vs. 345 (175, 453) in the fenofibrate arm (P = 0.819). There was no difference in various secondary and exploratory endpoints, including all-cause death, across randomization arms. These results were highly consistent across pre-specified sensitivity and subgroup analyses. Conclusion Among patients with COVID-19, fenofibrate has no significant effect on various clinically relevant outcomes.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Oday Salman
- Hospital of the University of Pennsylvania and Perelman School of Medicine, American University of Beirut
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Tiffany Sharkoski
- Hospital of the University of Pennsylvania and Perelman School of Medicine
| | - Katherine Greene
- Hospital of the University of Pennsylvania and Perelman School of Medicine
| | - Bianca Pourmussa
- Hospital of the University of Pennsylvania and Perelman School of Medicine
| | - Candy Greczylo
- Hospital of the University of Pennsylvania and Perelman School of Medicine
| | | | | | | | | | | | - Mary Putt
- Perelman School of Medicine. University of Pennsylvania
| | | |
Collapse
|
3
|
Cure-Cure C, Cure P. Validation of cross-sectional studies with longitudinal meta-analysis. Osteoporos Int 2016; 27:2879. [PMID: 27112765 DOI: 10.1007/s00198-016-3583-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 03/22/2016] [Indexed: 11/26/2022]
Affiliation(s)
- C Cure-Cure
- Biomelab, Ltda, Barranquilla, Atlántico, Colombia
| | - P Cure
- Children's National Health System, 111 Michigan Avenue, NW Washington, DC, 20010, USA.
- The George Washington University, Washington, DC, USA.
| |
Collapse
|
4
|
Abstract
OBJECTIVE The association between parity and type 2 diabetes has been studied in developed countries and in Singapore and Chinese women but not in Hispanics. Herein we evaluated the association between parity (number of live births) with diabetes in a group of Hispanic postmenopausal women from Colombia. RESEARCH DESIGN AND METHODS Herein we evaluated the association between parity and diabetes in a population of 1,795 women from Colombia. Women were divided in birth categories (0 [referent], 1 or 2, 3-5, 6 or > births). Medical history of diabetes and anthropometric characteristics were recorded. Logistic regressions were performed in order to find the association between parity and diabetes in bivariable and multivariable models after controlling for age, body mass index (BMI), waist hip ratio (WHR) and diabetes family history, among other variables. RESULTS In our study, there was an association between parity and diabetes after adjusting for age, BMI and diabetes family history in the multiparous women groups when compared to the women with no births (Referent group) [1-2 births vs. referent OR 5.2 (95 CI 1.2-22.9), 3-5 births vs. referent OR 5.5 (1.3-23.0) and ≥6 births vs. referent OR 7.5 (1.8-31.8), respectively]. The association was maintained in two of the groups in the multivariable analysis [OR 5.0 (1.1-22.9) and 5.3 (1.2-23.5)], for 1 or 2 births and 6 or > births versus 0 births, respectively. Positive diabetes family history and WHR were also associated with an increased risk of diabetes [OR 4.6 (3.0-7.0) and 4.1 (2.0-8.1), respectively]. CONCLUSIONS In postmenopausal Hispanic women, multiparity, as well as a positive family history of diabetes and a high waist-hip ratio were associated with higher diabetes risk.
Collapse
Affiliation(s)
- Pablo Cure
- />Children’s National Health System, 111 Michigan Avenue, NW Washington DC, 20010 USA
- />The George Washington University, Washington DC, USA
| | | | | |
Collapse
|
5
|
|
6
|
|
7
|
|
8
|
Rueda-Clausen CF, Silva FA, Lindarte MA, Villa-Roel C, Gomez E, Gutierrez R, Cure-Cure C, López-Jaramillo P. Olive, soybean and palm oils intake have a similar acute detrimental effect over the endothelial function in healthy young subjects. Nutr Metab Cardiovasc Dis 2007; 17:50-57. [PMID: 17174226 DOI: 10.1016/j.numecd.2005.08.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2005] [Revised: 06/08/2005] [Accepted: 08/16/2005] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND AIM Currently, more than 30% of the caloric intake in the Colombian population comes from vegetable oil consumption mainly by the ingestion of deep-fried foods. Recently, it has been reported that unsaturated fatty acid rich oils have a beneficial effect on the endothelial function. Nevertheless, it is well know that the deep-frying process alters the chemical composition of vegetable oils and can produce adverse effects in the endothelial function. OBJECTIVE To evaluate the acute effect of the ingestion of large amounts of olive, soybean and palm oils, fresh and at two different deep-fry levels, on the glucose and lipid profiles and the endothelial function. METHODS AND RESULTS Ten healthy young volunteers were included in the study. After performing a baseline evaluation of cardiovascular risk factors and drawing a fasting blood sample, subjects were exposed to a randomly assigned potato soup meal containing 60 mL of one of three different vegetable oils (olive, soybean and palm), either fresh or at one of two different deep-fry levels (10 and 20 fries, respectively). Flow-mediated vasodilation (FMD) was performed in fasting conditions and 3h after the intake of the oil rich meal. Furthermore, blood samples were taken at these stages for the lipid profiles and plasma glucose determinations. All the meals resulted in a similar acute endothelial impairment (FMD decrease of 32.1%, confidence interval [CI] 95%, 28.0-36.2) and postprandial increase in triglycerides (27.03%, CI 95%, 20.5-33.3), independently of the type of oil ingested (p=0.44) and regardless of its deep-fry level (p=0.62). No correlation was found between endothelial impairment and postprandial triglyceride increment (r=-0.22, p=0.09). CONCLUSIONS No difference was found in the acute adverse effect of the ingestion of different vegetable oils on the endothelial function. All the vegetable oils, fresh and deep-fried, produced an increase in the triglyceride plasma levels in healthy subjects.
Collapse
Affiliation(s)
- Christian F Rueda-Clausen
- Vilano Group and Research Institute, Cardiovascular Foundation of Colombia, Calle 155a #23-58, Third Floor, Floridablanca, Santander, Colombia
| | | | | | | | | | | | | | | |
Collapse
|
9
|
Cure-Cure C, Capozza RF, Cointry GR, Meta M, Cure-Ramírez P, Ferretti JL. Reference charts for the relationships between dual-energy X-ray absorptiometry-assessed bone mineral content and lean mass in 3,063 healthy men and premenopausal and postmenopausal women. Osteoporos Int 2005; 16:2095-106. [PMID: 16172799 DOI: 10.1007/s00198-005-2007-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2004] [Accepted: 08/11/2005] [Indexed: 10/25/2022]
Abstract
Correlations between dual-energy X-ray absorptiometry (DXA)-assessed bone mineral content and lean mass (BMC-LM curves), and between BMC/LM ratio and age ([BMC/LM]-age curves), were analyzed in the whole body (WB), the upper limbs (ULs) and the lower limbs (LLs) of 3,063 healthy Hispanic adults. Groups of 472 men aged 25-87 years, 1,035 premenopausal (pre-MP) women aged 27-54 years, and 1,556 post-menopausal (post-MP) women aged 48-93 years were studied with a GE-Lunar DPX-Plus device. BMC-LM curves confirmed previous observations that BMC and LM masses always correlate linearly, with similar slopes within each region, but differing in intercepts according to gender and hormonal status. Multiple regression tests showed little or no independent interaction of body weight or height with those relationships. [BMC/LM]-age curves were flat in men but showed the positive influence of estrogens throughout the age range in women. Z-scored graphs of all the corresponding relationships were compiled, showing the confidence intervals for means +/-1, +/-2, and +/-3 SDs of the data (+/-1, +/-2, +/-3 z-scores) along BMC-LM and [BMC/LM]-age curves. These charts are proposed as references for assessing how well bone mass (as assessed by BMC) and muscle mass (assumed proportional to LM) follow the natural anthropometric/biomechanical proportionality in Hispanic men and women within the age range studied, employing similar devices. Charts for LLs, showing the lowest variance amongst the studied correlations and approaching the origin as an exclusive feature, could provide the most accurate reference curves. Differences between data from ULs and LLs may provide information about any eventual interaction of body-weight bearing with the general results. The proposed analysis may provide useful information for approaching a differential diagnosis between disuse-related and other types of osteopenias employing only DXA.
Collapse
Affiliation(s)
- Carlos Cure-Cure
- Universidad Metropolitana de Barranquilla and Osteolab, Barranquilla, Colombia
| | | | | | | | | | | |
Collapse
|
10
|
Cointry GR, Capozza RF, Ferretti SE, Meta MD, Feldman S, Capiglioni R, Reina P, Fracalossi NM, Ulla MR, Cure-Cure C, Ferretti JL. Absorptiometric assessment of muscle-bone relationships in humans: reference, validation, and application studies. J Bone Miner Metab 2005; 23 Suppl:109-14. [PMID: 15984425 DOI: 10.1007/bf03026334] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
This report summarizes some preliminary absorptiometric (DXA, QCT/pQCT) studies from our laboratory, supporting the following assumptions. 1. In Homo sapiens at all ages, natural proportionality between DXA-assessed bone mineral mass (bone mineral content, BMC) and muscle mass (lean mass, LM) of the whole body or limbs is specific for ethnicity, gender, and reproductive status, but not for body weight, height, or body mass index. 2. This proportionality is sensitive to many kinds of endocrine-metabolic perturbations. 3. Percentilized or Z-scored charts of the BMC/LM correlations as determined in large samples of healthy individuals can provide a diagnostic reference for evaluating proportionality in different conditions. 4. Employing exclusively DXA, this methodology can be applied to discriminate between "disuse-related" and "metabolic" osteopenias based on the finding of normal or low BMC/LM percentiles or Z-scores respectively, with important therapeutic and monitoring implications.
Collapse
Affiliation(s)
- Gustavo R Cointry
- Center for P-Ca Metabolism Studies (CEMFoC), National University of Rosario, Rosario, Argentina
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Capozza RF, Cointry GR, Cure-Ramírez P, Ferretti JL, Cure-Cure C. A DXA study of muscle-bone relationships in the whole body and limbs of 2512 normal men and pre- and post-menopausal women. Bone 2004; 35:283-95. [PMID: 15207769 DOI: 10.1016/j.bone.2004.03.010] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2003] [Revised: 03/05/2004] [Accepted: 03/12/2004] [Indexed: 11/23/2022]
Abstract
A whole-body DXA study of 1450 healthy Caucasian individuals [Bone 22 (1998) 683] found that mineral mass, either crude (BMC) or statistically adjusted to fat mass (FM-adjusted BMC), correlated linearly with lean mass (LM, proportional to muscle mass). The results showed similar slopes but decreasing intercepts (ordinate values) in the order: pre-MP women > men > post-MP women > children. This supports the hypothesis that sex hormones influence the control of bone status by muscle strength in all species. Now we further study those relationships in 2512 healthy Hispanic adults (307 men, 753 pre-MP women, 1452 post-MP women), including separate determinations in their upper and lower limbs. The slopes of the BMC or FM-adjusted BMC vs. LM relationships were parallel in all the studied regions. However, region-related differences were found between the ordinates of the curves. In the whole body, the crude-BMC/LM relationships showed the same ordinate differences as previously observed. In the lower limbs, those differences were smaller in magnitude but highly significant, showing the order: pre-MP women > men = post-MP women. In the upper limbs, the decreasing ordinate order was: men > pre-MP women > post-MP women. After fat adjustment of the BMC, order in both limbs was: men > pre-MP women > post-MP women. Parallelism of the curves was maintained in all cases. LM had a larger independent influence on these results than FM, body weight, or age. The parallelism of the curves supports the idea that a common biomechanical control of bones by muscles occurs in humans. Results suggest that sex-hormone-associated differences in DXA-assessed muscle-bone proportionality in humans could vary according to the region studied. This could be related to the different weight-bearing nature of the musculoskeletal structures studied. Besides the obvious anthropometric associations, FM would exert a mechanical effect as a component of body weight, evident in the lower limbs, while muscle contractions would induce a more significant, dynamical effect in both lower and upper limbs. Muscles seem to exert a larger influence than FM, body weight, and age on BMC in the whole body and lower limbs, regardless of the gender and reproductive status of the individual. The muscle-bone relationships studied may provide a rationale for a future differential diagnosis between disuse-related and other types of osteopenia.
Collapse
Affiliation(s)
- R F Capozza
- Centro de Estudios de Metabolismo Fosfocálcico, Universidad Nacional de Rosario, Argentina
| | | | | | | | | |
Collapse
|
12
|
Abstract
OBJECTIVES Pregnancy has been proposed as a risk factor for the development of osteoporosis; however, the results are controversial. Women in Colombia are multiparous, and therefore they represent an ideal population for the investigation of the effect of parity on osteoporosis. METHODS The study included 1855 post-menopausal Hispanic women from Barranquilla, Colombia who were referred to our osteoporosis clinic for a routine evaluation of their bone mineral status. Bone mineral density (BMD, g/cm(2)) was measured using dual energy X-ray absorptiometry. Total body, femoral and lumbar areas were scanned. RESULTS BMD of total body, hip and legs (P<0.0001), Ward's area (P<0.002) and intertrochanteric area (P<0.003) was high in women with at least one delivery in comparison with nulliparous women. Total mineral and calcium body contents were also high in women after second delivery. A history of fractures was found in 22.9% (n=425) of the study women. The relative risk for bone-fractures was high (O.R. 0.41; P<0.000002) in nulliparous women in comparison to multiparous women. In addition, osteopenia (O.R. 2.01; P=0.008) and osteoporosis (O.R. 3.99; P=0.0004) were most often present in nulliparous women in comparison to multiparous women. CONCLUSIONS Pregnancies in this population appear to be a protective factor against development of osteoporosis. The increase in total mineral and calcium contents was related to the number of pregnancies, suggesting the existence of a bone mass peak during pregnancy.
Collapse
Affiliation(s)
- C Cure-Cure
- Osteolab and Universidad Metropolitana, Barranquilla, Colombia.
| | | | | | | |
Collapse
|
13
|
Abstract
OBJECTIVE Hormone replacement therapy is used in postmenopausal women to improve symptoms of menopause and to protect bone and the cardiovascular system. We have evaluated the effects of parity in terms of number of deliveries on bone density and fracture risk at different ages. STUDY DESIGN We evaluated 1875 Hispanic women > or =50 years old (61.3 +/- 8.3 years), 425 with a history of nonselective fractures and 1450 without previous fractures. Body mass index was 27.3 +/- 4.3 kg/m(2). Bone mineral densities were determined for the total body in 1468 cases, the femur in 221 cases, and the lumbar spine in 189 cases. Women were classified according to lifetime number of deliveries (from 0 to > or =5), and bone mineral densities and odds ratios for fracture risk were calculated relative to the number of deliveries. RESULTS Bone mineral densities in total body, pelvis, and legs and total calcium and total mineral contents increased (P <.001) with > or =2 deliveries among women 50 to 59 years old but not among those > or =70 years old. The prevalence of fractures was higher in nulliparous than in multiparous women at all ages. Fracture risk was lower in multiparous women at all age groups, including those > or =70 years old (odds ratio, 0.47; 95% confidence interval, 0.26-0.84; P <.006). CONCLUSION Bone mineral density increases with the number of deliveries until the age of 69 years. Fracture prevalence and fracture risk are lower among multiparous women even at older ages. These findings suggest that hormone replacement therapy can be delayed until 65 years of age for multiparous women but should be initiated at the beginning of menopause for nulliparous women.
Collapse
Affiliation(s)
- C Cure-Cure
- Osteolab and Universidad Metropolitana, Barranquilla, Colombia
| | | |
Collapse
|
14
|
Abstract
The effect of thyroid replacement therapy (TRT) was evaluated in 372 children with minimal thyroid dysfunction (MTD; augmented TSH response to TRH, deficient iodine consumption, goiter, short stature and retarded bone age), by comparison of pre- with post-observation height in periods of 6 months with and without TRT alternated. A significant (P < 0.05) height recovery was observed when children received TRT; however, during the period without TRT they showed a negative height recovery. Additionally, we followed 51 children with MTD who were observed from Tanner I until final height. The group with L-thyroxine (n = 43) during all follow-up (97 months) showed an important recovery in height (SDS-H = 1.67 +/- 0.93 vs. 1.08 +/- 0.74) which when compared with the untreated group (n = 8; 114 months; SDS-H = -1.50 +/- 0.83 vs. -1.93 +/- 0.33) was significant (P < 0.001).
Collapse
|