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Doan TNA, Cowley JM, Phillips AL, Briffa JF, Leemaqz SY, Burton RA, Romano T, Wlodek ME, Bianco-Miotto T. Imprinted gene alterations in the kidneys of growth restricted offspring may be mediated by a long non-coding RNA. Epigenetics 2024; 19:2294516. [PMID: 38126131 PMCID: PMC10761017 DOI: 10.1080/15592294.2023.2294516] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 12/06/2023] [Indexed: 12/23/2023] Open
Abstract
Altered epigenetic mechanisms have been previously reported in growth restricted offspring whose mothers experienced environmental insults during pregnancy in both human and rodent studies. We previously reported changes in the expression of the DNA methyltransferase Dnmt3a and the imprinted genes Cdkn1c (Cyclin-dependent kinase inhibitor 1C) and Kcnq1 (Potassium voltage-gated channel subfamily Q member 1) in the kidney tissue of growth restricted rats whose mothers had uteroplacental insufficiency induced on day 18 of gestation, at both embryonic day 20 (E20) and postnatal day 1 (PN1). To determine the mechanisms responsible for changes in the expression of these imprinted genes, we investigated DNA methylation of KvDMR1, an imprinting control region (ICR) that includes the promoter of the antisense long non-coding RNA Kcnq1ot1 (Kcnq1 opposite strand/antisense transcript 1). Kcnq1ot1 expression decreased by 51% in growth restricted offspring compared to sham at PN1. Interestingly, there was a negative correlation between Kcnq1ot1 and Kcnq1 in the E20 growth restricted group (Spearman's ρ = 0.014). No correlation was observed between Kcnq1ot1 and Cdkn1c expression in either group at any time point. Additionally, there was a 11.25% decrease in the methylation level at one CpG site within KvDMR1 ICR. This study, together with others in the literature, supports that long non-coding RNAs may mediate changes seen in tissues of growth restricted offspring.
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Affiliation(s)
- Thu N. A. Doan
- School of Agriculture, Food and Wine, & Waite Research Institute, University of Adelaide, Adelaide, South Australia, Australia
- Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - James M. Cowley
- School of Agriculture, Food and Wine, & Waite Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Aaron L. Phillips
- School of Agriculture, Food and Wine, & Waite Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Jessica F. Briffa
- Department of Anatomy and Physiology, The University of Melbourne, Parkville, Victoria, Australia
| | - Shalem Y. Leemaqz
- Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
- SAHMRI Women and Kids, South Australian Health & Medical Research Institute, Adelaide, South Australia, Australia
- College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Rachel A. Burton
- School of Agriculture, Food and Wine, & Waite Research Institute, University of Adelaide, Adelaide, South Australia, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Mary E. Wlodek
- Department of Anatomy and Physiology, The University of Melbourne, Parkville, Victoria, Australia
- Department of Obstetrics and Gynaecology, The University of Melbourne, Parkville, Victoria, Australia
| | - Tina Bianco-Miotto
- School of Agriculture, Food and Wine, & Waite Research Institute, University of Adelaide, Adelaide, South Australia, Australia
- Robinson Research Institute, University of Adelaide, Adelaide, South Australia, Australia
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Houser DS, Champagne CD, Wasser SK, Booth RK, Romano T, Crocker DE. Influence of season, age, sex, and time of day on the endocrine profile of the common bottlenose dolphin (Tursiops truncatus). Gen Comp Endocrinol 2021; 313:113889. [PMID: 34425086 DOI: 10.1016/j.ygcen.2021.113889] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 08/03/2021] [Accepted: 08/18/2021] [Indexed: 01/15/2023]
Abstract
Understanding baseline hormone levels, the magnitude of intra-individual variability, and their variation as a function of life history is difficult in toothed whales (e.g. dolphins and porpoises) because of the effects of capture stress. To determine the endocrine profile of the common bottlenose dolphin (Tursiops truncatus) as a function of season, time of day (TOD), age, sex, and reproductive status, blood corticosteroids, thyroid hormones, and catecholamines were repeatedly measured in a managed-care population exposed to ambient light and water temperatures of San Diego Bay. Additionally, fecal hormone metabolites were assessed for cortisol, aldosterone, and triiodothyronine. Samples were collected at two to four-week intervals over a period of two years, and multiple times within a day at monthly intervals over a year. Samples were collected through the voluntary participation of the dolphins in the blood draws and fecal collections in order to avoid the effects of handling stress. All serum hormones except aldosterone significantly varied with season and all serum hormones except total thyroxine significantly varied as a function of TOD. Fecal glucocorticoid metabolites significantly correlated with circulating cortisol levels, and there was a significant seasonal effect on triiodothyronine fecal metabolites. Strong seasonal effects demonstrated complex interactions with age and sex suggesting that contextual information is critical to interpreting differences in endocrine profiles. Strong circadian patterns further suggest that sampling design is important to the interpretation of blood or fecal collections, particularly since diurnal changes in some serum hormone levels are similar to the magnitude of seasonal differences. Despite potential impacts of feeding schedules on diurnal patterns, managed care populations can provide important insights into seasonal and age-related endocrine changes in toothed whales.
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Affiliation(s)
- D S Houser
- National Marine Mammal Foundation, 2240 Shelter Island Drive, Suite 200, San Diego, CA 92106, USA.
| | - C D Champagne
- National Marine Mammal Foundation, 2240 Shelter Island Drive, Suite 200, San Diego, CA 92106, USA
| | - S K Wasser
- Center for Conservation Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
| | - R K Booth
- Center for Conservation Biology, Box 351800, University of Washington, Seattle, WA 98195, USA
| | - T Romano
- Mystic Aquarium, 55 Coogan Blvd, Mystic, CT 06355, USA
| | - D E Crocker
- Department of Biology, Sonoma State University, 1801 E. Cotati Ave, Rohnert Park, CA 94928, USA
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Murphy C, Walker S, MacDonald T, Keenan E, Hannan N, Wlodek M, Briffa J, Romano T, Cannon P, Nguyen TV, Kandel M, Pritchard N, Tong S, Kaitu'u-Lino T. Elevated circulating and placental SPINT2 is associated with placental insufficiency. Placenta 2021. [DOI: 10.1016/j.placenta.2021.07.196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Murphy CN, Walker SP, MacDonald TM, Keenan E, Hannan NJ, Wlodek ME, Myers J, Briffa JF, Romano T, Roddy Mitchell A, Whigham CA, Cannon P, Nguyen TV, Kandel M, Pritchard N, Tong S, Kaitu’u-Lino TJ. Elevated Circulating and Placental SPINT2 Is Associated with Placental Dysfunction. Int J Mol Sci 2021; 22:7467. [PMID: 34299087 PMCID: PMC8305184 DOI: 10.3390/ijms22147467] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/08/2021] [Accepted: 07/08/2021] [Indexed: 12/04/2022] Open
Abstract
Biomarkers for placental dysfunction are currently lacking. We recently identified SPINT1 as a novel biomarker; SPINT2 is a functionally related placental protease inhibitor. This study aimed to characterise SPINT2 expression in placental insufficiency. Circulating SPINT2 was assessed in three prospective cohorts, collected at the following: (1) term delivery (n = 227), (2) 36 weeks (n = 364), and (3) 24-34 weeks' (n = 294) gestation. SPINT2 was also measured in the plasma and placentas of women with established placental disease at preterm (<34 weeks) delivery. Using first-trimester human trophoblast stem cells, SPINT2 expression was assessed in hypoxia/normoxia (1% vs. 8% O2), and following inflammatory cytokine treatment (TNFα, IL-6). Placental SPINT2 mRNA was measured in a rat model of late-gestational foetal growth restriction. At 36 weeks, circulating SPINT2 was elevated in patients who later developed preeclampsia (p = 0.028; median = 2233 pg/mL vs. controls, median = 1644 pg/mL), or delivered a small-for-gestational-age infant (p = 0.002; median = 2109 pg/mL vs. controls, median = 1614 pg/mL). SPINT2 was elevated in the placentas of patients who required delivery for preterm preeclampsia (p = 0.025). Though inflammatory cytokines had no effect, hypoxia increased SPINT2 in cytotrophoblast stem cells, and its expression was elevated in the placental labyrinth of growth-restricted rats. These findings suggest elevated SPINT2 is associated with placental insufficiency.
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Affiliation(s)
- Ciara N. Murphy
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Susan P. Walker
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Teresa M. MacDonald
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Emerson Keenan
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Natalie J. Hannan
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Mary E. Wlodek
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- The Department of Anatomy and Physiology, The University of Melbourne, VIC 3010, Australia;
| | - Jenny Myers
- Manchester Academic Health Science Centre, St Mary’s Hospital, University of Manchester, Manchester M13 OJH, UK;
| | - Jessica F. Briffa
- The Department of Anatomy and Physiology, The University of Melbourne, VIC 3010, Australia;
| | - Tania Romano
- The Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC 3086, Australia;
| | - Alexandra Roddy Mitchell
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Carole-Anne Whigham
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Ping Cannon
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Tuong-Vi Nguyen
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Manju Kandel
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Natasha Pritchard
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Stephen Tong
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
| | - Tu’uhevaha J. Kaitu’u-Lino
- The Department of Obstetrics and Gynaecology, Mercy Hospital for Women, The University of Melbourne, Heidelberg, VIC 3084, Australia; (S.P.W.); (T.M.M.); (E.K.); (N.J.H.); (M.E.W.); (A.R.M.); (C.-A.W.); (P.C.); (T.-V.N.); (M.K.); (N.P.); (S.T.); (T.J.K.-L.)
- Mercy Perinatal, Mercy Hospital for Women, Heidelberg, VIC 3084, Australia
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Mangwiro YT, Cuffe JS, Vickers MH, Reynolds CM, Mahizir D, Anevska K, Gravina S, Romano T, Moritz KM, Briffa JF, Wlodek ME. Maternal exercise alters rat fetoplacental stress response: Minimal effects of maternal growth restriction and high-fat feeding. Placenta 2020; 104:57-70. [PMID: 33276236 DOI: 10.1016/j.placenta.2020.11.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 11/09/2020] [Accepted: 11/15/2020] [Indexed: 11/29/2022]
Abstract
INTRODUCTION Fetal growth restriction complicates 10% of pregnancies and increases offspring (F1) risk of metabolic disorders, including obesity and gestational diabetes mellitus (GDM). This disease predisposition can be passed onto the next generation (F2). Importantly, the risk of pregnancy complications in obese women can be exacerbated by a stressful pregnancy. Exercise can reduce adiposity and improve health outcomes in obese women and those with GDM. This study investigated the impacts of maternal growth restriction, obesity, exercise, and stress on fetal and placental endocrine function. METHODS Uteroplacental insufficiency (Restricted) or sham (Control) surgery was induced on embryonic day (E) 18 in F0 Wistar-Kyoto rats. F1 offspring were fed a Chow or High-fat (HFD) diet from weaning and, at 16 weeks, were randomly allocated an exercise protocol; Sedentary, Exercised prior to and during pregnancy (Exercise), or Exercised only during pregnancy (PregEx). Females were mated and further randomly allocated to either undergo (Stress), or not undergo (Unstressed), physiological measurements during pregnancy. On E20, F2 fetal plasma (steroid hormones), tissues (brain, liver), and placentae (morphology, stress genes) were collected. RESULTS Maternal growth restriction and high-fat feeding had minimal impact on fetoplacental endocrine function. PregEx and Exercise increased cross-sectional labyrinth and junctional zone areas. PregEx, but not Exercise, increased fetal deoxycorticosterone concentrations and reduced placental Hsd11b2 and Nr3c2 gene abundance. Maternal stress increased fetal corticosterone concentrations in Sedentary HFD dams and increased placental cross-sectional areas in PregEx mothers. DISCUSSION PregEx and Stress independently dysregulates the endocrine status of the developing fetus, which may program future disease.
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Affiliation(s)
- Yeukai Tm Mangwiro
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia; Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - James Sm Cuffe
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Mark H Vickers
- Liggins Institute, University of Auckland, Grafton, Auckland, 1142, New Zealand
| | - Clare M Reynolds
- Liggins Institute, University of Auckland, Grafton, Auckland, 1142, New Zealand
| | - Dayana Mahizir
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia; Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sogand Gravina
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia; Child Health Research Centre, The University of Queensland, South Brisbane, QLD, 4101, Australia
| | - Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia.
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Anevska K, Mahizir D, Briffa JF, Jefferies AJ, Wark JD, Grills BL, Brady RD, McDonald SJ, Wlodek ME, Romano T. Treadmill Exercise before and during Pregnancy Improves Bone Deficits in Pregnant Growth Restricted Rats without the Exacerbated Effects of High Fat Diet. Nutrients 2019; 11:nu11061236. [PMID: 31151257 PMCID: PMC6627539 DOI: 10.3390/nu11061236] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2019] [Revised: 05/28/2019] [Accepted: 05/29/2019] [Indexed: 11/19/2022] Open
Abstract
Growth restriction programs adult bone deficits and increases the risk of obesity, which may be exacerbated during pregnancy. We aimed to determine if high-fat feeding could exacerbate the bone deficits in pregnant growth restricted dams, and whether treadmill exercise would attenuate these deficits. Uteroplacental insufficiency was induced on embryonic day 18 (E18) in Wistar Kyoto (WKY) rats using bilateral uterine vessel ligation (restricted) or sham (control) surgery. The F1 females consumed a standard or high-fat (HFD) diet from 5 weeks, commenced treadmill exercise at 16 weeks, and they were mated at 20 weeks. Femora and plasma from the pregnant dams were collected at post-mortem (E20) for peripheral quantitative computed tomography (pQCT), mechanical testing, histomorphometry, and plasma analysis. Sedentary restricted females had bone deficits compared to the controls, irrespective of diet, where such deficits were prevented with exercise. Osteocalcin increased in the sedentary restricted females compared to the control females. In the sedentary HFD females, osteocalcin was reduced and CTX-1 was increased, with increased peak force and bending stress compared to the chow females. Exercise that was initiated before and continued during pregnancy prevented bone deficits in the dams born growth restricted, whereas a HFD consumption had minimal bone effects. These findings further highlight the beneficial effects of exercise for individuals at risk of bone deficits.
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Affiliation(s)
- Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora, VIC 3083, Australia.
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Dayana Mahizir
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Andrew J Jefferies
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - John D Wark
- Department of Medicine, The University of Melbourne, Parkville, VIC 3010, Australia.
- Bone and Mineral Medicine, Royal Melbourne Hospital, Parkville, VIC 3050, Australia.
| | - Brian L Grills
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora, VIC 3083, Australia.
| | - Rhys D Brady
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora, VIC 3083, Australia.
| | - Stuart J McDonald
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora, VIC 3083, Australia.
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora, VIC 3083, Australia.
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Briffa JF, Anevska K, Chen L, Wlodek ME, Romano T. Metformin administration in pregnant high-fat fed rats improves metabolic function and adiposity. Obes Res Clin Pract 2019. [DOI: 10.1016/j.orcp.2018.11.128] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mangwiro YTM, Cuffe JSM, Mahizir D, Anevska K, Gravina S, Romano T, Moritz KM, Briffa JF, Wlodek ME. Exercise initiated during pregnancy in rats born growth restricted alters placental mTOR and nutrient transporter expression. J Physiol 2019; 597:1905-1918. [PMID: 30734290 DOI: 10.1113/jp277227] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 01/24/2019] [Indexed: 02/06/2023] Open
Abstract
KEY POINTS Fetal growth is dependent on effective placental nutrient transportation, which is regulated by mammalian target of rapamycin (mTOR) complex 1 modulation of nutrient transporter expression. These transporters are dysregulated in pregnancies affected by uteroplacental insufficiency and maternal obesity. Nutrient transporters and mTOR were altered in placentae of mothers born growth restricted compared to normal birth weight dams, with maternal diet- and fetal sex-specific responses. Exercise initiated during pregnancy downregulated mTOR protein expression, despite an increase in mTOR activation in male associated placentae, and reduced nutrient transporter gene abundance, which was also dependent on maternal diet and fetal sex. Limited changes were characterized with exercise initiated before and continued throughout pregnancy in nutrient transporter and mTOR expression. Maternal exercise during pregnancy differentially regulated mTOR and nutrient transporters in a diet- and sex-specific manner, which likely aimed to improve late gestational placental growth and neonatal survival. ABSTRACT Adequate transplacental nutrient delivery is essential for fetoplacental development. Intrauterine growth restriction and maternal obesity independently alter placental nutrient transporter expression. Although exercise is beneficial for maternal health, limited studies have characterized how the timing of exercise initiation influences placental nutrient transport. Therefore, this study investigated the impact of maternal exercise on placental mechanistic target of rapamycin (mTOR) and nutrient transporter expression in growth restricted mothers and whether these outcomes were dependent on maternal diet or fetal sex. Uteroplacental insufficiency or sham surgery was induced on embryonic day (E) 18 in Wistar-Kyoto rats. F1 offspring were fed a chow or high-fat diet from weaning and at 16 weeks were randomly allocated to an exercise protocol: sedentary, exercised prior to and during pregnancy, or exercised during pregnancy only. Females were mated with normal males (20 weeks) and F2 placentae collected at E20. Exercise during pregnancy only, reduced mTOR protein expression in all groups and increased mTOR activation in male associated placentae. Exercise during pregnancy only, decreased the expression of amino acid transporters in a diet- and sex-specific manner. Maternal growth restriction altered mTOR and system A amino acid transporter expression in a sex- and diet-specific manner. These data highlight that maternal exercise initiated during pregnancy alters placental mTOR expression, which may directly regulate amino acid transporter expression, to a greater extent than exercise initiated prior to and continued during pregnancy, in a diet- and fetal sex-dependent manner. These findings highlight that the timing of exercise initiation is important for optimal placental function.
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Affiliation(s)
- Yeukai T M Mangwiro
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3083, Australia.,Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - James S M Cuffe
- School of Biomedical Sciences, University of Queensland, St Lucia, Queensland, 4072, Australia
| | - Dayana Mahizir
- Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3083, Australia.,Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Sogand Gravina
- Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3083, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, University of Queensland, St Lucia, Queensland, 4072, Australia.,Child Health Research Centre, University of Queensland, South Brisbane, Queensland, 4101, Australia
| | - Jessica F Briffa
- Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, University of Melbourne, Parkville, Victoria, 3010, Australia
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9
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Briffa JF, O'Dowd R, Romano T, Muhlhausler BS, Moritz KM, Wlodek ME. Reducing Pup Litter Size Alters Early Postnatal Calcium Homeostasis and Programs Adverse Adult Cardiovascular and Bone Health in Male Rats. Nutrients 2019; 11:nu11010118. [PMID: 30626125 PMCID: PMC6356436 DOI: 10.3390/nu11010118] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 12/19/2018] [Accepted: 01/03/2019] [Indexed: 12/22/2022] Open
Abstract
The in utero and early postnatal environments play essential roles in offspring growth and development. Standardizing or reducing pup litter size can independently compromise long-term health likely due to altered milk quality, thus limiting translational potential. This study investigated the effect reducing litter size has on milk quality and offspring outcomes. On gestation day 18, dams underwent sham or bilateral uterine vessel ligation surgery to generate dams with normal (Control) and altered (Restricted) milk quality/composition. At birth, pups were cross-fostered onto separate dams with either an unadjusted or reduced litter size. Plasma parathyroid hormone-related protein was increased in Reduced litter pups, whereas ionic calcium and total body calcium were decreased. These data suggest Reduced litter pups have dysregulated calcium homeostasis in early postnatal life, which may impair bone mineralization decreasing adult bone bending strength. Dams suckling Reduced litter pups had increased milk long-chain monounsaturated fatty acid and omega-3 docosahexaenoic acid. Reduced litter pups suckled by Normal milk quality/composition dams had increased milk omega-6 linoleic and arachidonic acids. Reduced litter male adult offspring had elevated blood pressure. This study highlights care must be taken when interpreting data from research that alters litter size as it may mask subtle cardiometabolic health effects.
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Affiliation(s)
- Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia.
| | - Rachael O'Dowd
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia.
| | - Tania Romano
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia.
- Department of Physiology, Anatomy and Microbiology, LaTrobe University, Bundoora 3083, Australia.
| | - Beverly S Muhlhausler
- Department of Food and Wine Science, School of Agriculture, Food and Wine, FOODplus Research Centre, The University of Adelaide, Adelaide 5064, Australia.
| | - Karen M Moritz
- Child Health Research Centre and School of Biomedical Sciences, The University of Queensland, St. Lucia 4101, Australia.
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia.
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10
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Wanner N, Vornweg J, Combes A, Wilson S, Plappert J, Rafflenbeul G, Puelles VG, Rahman RU, Liwinski T, Lindner S, Grahammer F, Kretz O, Wlodek ME, Romano T, Moritz KM, Boerries M, Busch H, Bonn S, Little MH, Bechtel-Walz W, Huber TB. DNA Methyltransferase 1 Controls Nephron Progenitor Cell Renewal and Differentiation. J Am Soc Nephrol 2019; 30:63-78. [PMID: 30518531 PMCID: PMC6317605 DOI: 10.1681/asn.2018070736] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 10/22/2018] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Nephron number is a major determinant of long-term renal function and cardiovascular risk. Observational studies suggest that maternal nutritional and metabolic factors during gestation contribute to the high variability of nephron endowment. However, the underlying molecular mechanisms have been unclear. METHODS We used mouse models, including DNA methyltransferase (Dnmt1, Dnmt3a, and Dnmt3b) knockout mice, optical projection tomography, three-dimensional reconstructions of the nephrogenic niche, and transcriptome and DNA methylation analysis to characterize the role of DNA methylation for kidney development. RESULTS We demonstrate that DNA hypomethylation is a key feature of nutritional kidney growth restriction in vitro and in vivo, and that DNA methyltransferases Dnmt1 and Dnmt3a are highly enriched in the nephrogenic zone of the developing kidneys. Deletion of Dnmt1 in nephron progenitor cells (in contrast to deletion of Dnmt3a or Dnm3b) mimics nutritional models of kidney growth restriction and results in a substantial reduction of nephron number as well as renal hypoplasia at birth. In Dnmt1-deficient mice, optical projection tomography and three-dimensional reconstructions uncovered a significant reduction of stem cell niches and progenitor cells. RNA sequencing analysis revealed that global DNA hypomethylation interferes in the progenitor cell regulatory network, leading to downregulation of genes crucial for initiation of nephrogenesis, Wt1 and its target Wnt4. Derepression of germline genes, protocadherins, Rhox genes, and endogenous retroviral elements resulted in the upregulation of IFN targets and inhibitors of cell cycle progression. CONCLUSIONS These findings establish DNA methylation as a key regulatory event of prenatal renal programming, which possibly represents a fundamental link between maternal nutritional factors during gestation and reduced nephron number.
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Affiliation(s)
| | - Julia Vornweg
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
- Faculty of Biology
| | - Alexander Combes
- Anatomy and Neuroscience
- Cell Biology Theme, Murdoch Children's Research Institute, Melbourne, Australia
| | | | - Julia Plappert
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
| | - Gesa Rafflenbeul
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
| | | | - Raza-Ur Rahman
- Institute of Medical Systems Biology, Center for Molecular Neurobiology, and
| | - Timur Liwinski
- Institute of Medical Systems Biology, Center for Molecular Neurobiology, and
- I. Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Saskia Lindner
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
| | | | - Oliver Kretz
- III. Department of Medicine
- Department of Neuroanatomy, University of Freiburg, Freiburg, Germany
| | | | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, Australia
| | - Karen M Moritz
- Child Health Research Centre and School of Biomedical Sciences, University of Queensland, St. Lucia, Queensland, Australia
| | - Melanie Boerries
- German Cancer Consortium, Heidelberg, Germany
- German Cancer Research Center, Heidelberg, Germany
- Institute of Molecular Medicine and Cell Research
| | - Hauke Busch
- Institute of Molecular Medicine and Cell Research
- Lübeck Institute of Experimental Dermatology, Lübeck, Germany; and
| | - Stefan Bonn
- Institute of Molecular Medicine and Cell Research
- Laboratory of Computational Systems Biology, German Center for Neurodegenerative Diseases (DZNE), Tübingen, Germany
| | - Melissa H Little
- Cell Biology Theme, Murdoch Children's Research Institute, Melbourne, Australia
- Pediatrics, University of Melbourne, Melbourne, Australia
| | - Wibke Bechtel-Walz
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
| | - Tobias B Huber
- III. Department of Medicine,
- Faculty of Medicine, Department of Medicine IV, Medical Center-University of Freiburg, and
- Centre for Biological Signalling Studies (BIOSS) and Center for Biological Systems Analysis (ZBSA), and
- Freiburg Institute for Advanced Studies, Albert Ludwig University of Freiburg, Freiburg, Germany; Departments of
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11
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Mangwiro YT, Briffa JF, Gravina S, Mahizir D, Anevska K, Romano T, Moritz KM, Cuffe JS, Wlodek ME. Maternal exercise and growth restriction in rats alters placental angiogenic factors and blood space area in a sex-specific manner. Placenta 2018; 74:47-54. [PMID: 30638632 DOI: 10.1016/j.placenta.2018.12.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/11/2018] [Accepted: 12/13/2018] [Indexed: 12/21/2022]
Abstract
Fetal growth and development are dependent on adequate placental nutrient transfer. The surface area of the placental villous network is a key determinant of nutrient exchange, which is regulated by vasculogenic and angiogenic factors. These factors are altered by intrauterine growth restriction (IUGR) and maternal obesity in both the first (F1) and second (F2) generations. We investigated the impact of endurance exercise in IUGR dams fed a High-fat diet on placental vasculogenesis and angiogenesis. Uteroplacental insufficiency (Restricted) or sham (Control) surgery was induced on embryonic day (E) 18 in Wistar-Kyoto rats. F1 offspring were fed a Chow or High-fat diet from weaning, and at 16 weeks were further allocated an exercise protocol; Sedentary, Exercised prior to and during pregnancy (Exercise), or Exercised during pregnancy only (PregEx). Females were mated (20 weeks) and F2 placentae collected at E20. Maternal Restriction, High-fat feeding and Exercise had a minimal impact on placental regulators of vasculogenesis and angiogenesis. However, Restriction increased placental labyrinth tissue area in Chow-fed dams. PregEx induced overt adaptations, including increased VEGFA and decreased PLGF protein expression, and reduced blood space area. These alterations were sex-dependent and associated with alterations in miRNA27a, a known regulator of VEGF translation. These data highlight that maternal exercise initiated during pregnancy (PregEx) causes alterations in placental vasculogenesis and angiogenesis in a sex-dependent manner, with minimal Restriction and maternal diet effects. However, further investigation is required to determine if these adaptations are beneficial or harmful for maternal and fetoplacental outcomes.
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Affiliation(s)
- Yeukai Tm Mangwiro
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia; Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sogand Gravina
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Dayana Mahizir
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia; Child Health Research Centre, The University of Queensland, South Brisbane, Queensland, 4101, Australia
| | - James Sm Cuffe
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia.
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12
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Christie MJ, Romano T, Murphy RM, Posterino GS. The effect of intrauterine growth restriction on Ca 2+ -activated force and contractile protein expression in the mesenteric artery of adult (6-month-old) male and female Wistar-Kyoto rats. Physiol Rep 2018; 6:e13954. [PMID: 30592188 PMCID: PMC6308111 DOI: 10.14814/phy2.13954] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 11/22/2018] [Indexed: 12/29/2022] Open
Abstract
Intrauterine growth restriction (IUGR) is known to alter vascular smooth muscle reactivity, but it is currently unknown whether these changes are driven by downstream events that lead to force development, specifically, Ca2+ -regulated activation of the contractile apparatus or a shift in contractile protein content. This study investigated the effects of IUGR on Ca2+ -activated force production, contractile protein expression, and a potential phenotypic switch in the resistance mesenteric artery of both male and female Wistar-Kyoto (WKY) rats following two different growth restriction models. Pregnant female WKY rats were randomly assigned to either a control (C; N = 9) or food restriction diet (FR; 40% of control; N = 11) at gestational day-15 or underwent a bilateral uterine vessel ligation surgery restriction (SR; N = 10) or a sham surgery control model (SC; N = 12) on day-18 of gestation. At 6-months of age, vascular responsiveness of intact mesenteric arteries was studied, before chemically permeabilization using 50 μmol/L β-escin to investigate Ca2+ -activated force. Peak responsiveness to a K+ -induced depolarization was decreased (P ≤ 0.05) due to a reduction in maximum Ca2+ -activated force (P ≤ 0.05) in both male growth restricted experimental groups. Vascular responsiveness was unchanged between female experimental groups. Segments of mesenteric artery were analyzed using Western blotting revealed IUGR reduced the relative abundance of important receptor and contractile proteins in male growth restricted rats (P ≤ 0.05), suggesting a potential phenotypic switch, whilst no changes were observed in females. Results from this study suggest that IUGR alters the mesenteric artery reactivity due to a decrease in maximum Ca2+ -activated force, and likely contributed to by a reduction in contractile protein and receptor/channel content in 6-month-old male rats, while female WKY rats appear to be protected.
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Affiliation(s)
- Michael J. Christie
- Department of Physiology, Anatomy and MicrobiologyLa Trobe UniversityMelbourneVictoriaAustralia
| | - Tania Romano
- Department of Physiology, Anatomy and MicrobiologyLa Trobe UniversityMelbourneVictoriaAustralia
| | - Robyn M. Murphy
- Department of Biochemistry and GeneticsLa Trobe Institute for Molecular SciencesLa Trobe UniversityMelbourneVictoriaAustralia
| | - Giuseppe S. Posterino
- Department of Physiology, Anatomy and MicrobiologyLa Trobe UniversityMelbourneVictoriaAustralia
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13
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Mangwiro YTM, Cuffe JSM, Briffa JF, Mahizir D, Anevska K, Jefferies AJ, Hosseini S, Romano T, Moritz KM, Wlodek ME. Maternal exercise in rats upregulates the placental insulin-like growth factor system with diet- and sex-specific responses: minimal effects in mothers born growth restricted. J Physiol 2018; 596:5947-5964. [PMID: 29953638 DOI: 10.1113/jp275758] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Accepted: 06/07/2018] [Indexed: 12/18/2022] Open
Abstract
KEY POINTS The placental insulin-like growth factor (IGF) system is critical for normal fetoplacental growth, which is dysregulated following several pregnancy perturbations including uteroplacental insufficiency and maternal obesity. We report that the IGF system was altered in placentae of mothers born growth restricted compared to normal birth weight mothers, with maternal diet- and fetal sex-specific responses. Additionally, we report increased body weight and plasma IGF1 concentrations in fetuses from chow-fed normal birth weight mothers that exercised prior to and continued during pregnancy compared to sedentary mothers. Exercise initiated during pregnancy, on the other hand, resulted in placental morphological alterations and increased IGF1 and IGF1R protein expression, which may in part be modulated by reduced Let 7f-1 miRNA abundance. Growth restriction of mothers before birth and exercise differentially regulate the placental IGF system with diet- and sex-specific responses, probably as a means to improve fetoplacental growth and development, and hence neonatal survival. This increased neonatal survival may prevent adult disease onset. ABSTRACT The insulin-like growth factor (IGF) system regulates fetoplacental growth and plays a role in disease programming. Dysregulation of the IGF system is implicated in several pregnancy perturbations associated with altered fetal growth, including intrauterine growth restriction and maternal obesity. Limited human studies have demonstrated that maternal exercise enhances fetoplacental growth and decreases cord IGF ligands, which may restore the placental IGF system in complicated pregnancies. This study investigated the impact maternal exercise has on the placental IGF system in placentae from mothers born growth restricted and if these outcomes are dependent on maternal diet or fetal sex. Uteroplacental insufficiency (Restricted) or sham (Control) surgery was induced on embryonic day (E) 18 in Wistar-Kyoto rats. F1 offspring were fed a chow or high-fat diet from weaning, and at 16 weeks were randomly allocated an exercise protocol: Sedentary, Exercised prior to and during pregnancy (Exercise), or Exercised during pregnancy only (PregEx). Females were mated (20 weeks) with placentae associated with F2 fetuses collected at E20. The placental IGF system mRNA abundance and placental morphology was altered in mothers born growth restricted. Exercise increased fetal weight and Control plasma IGF1 concentrations, and decreased female placental weight. PregEx did not influence fetoplacental growth but increased placental IGF1 and IGF1R (potentially modulated by reduced Let 7f-1 miRNA) and decreased placental IGF2 protein. Importantly, these placental IGF system changes occurred with sex-specific responses. These data highlight that exercise differently influences fetoplacental growth and the placental IGF system depending on maternal exercise initiation, which may prevent the transgenerational transmission of deficits and dysfunction.
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Affiliation(s)
- Yeukai T M Mangwiro
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia.,Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - James S M Cuffe
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia.,School of Medical Science and Menzies Health Institute Queensland, Griffith University, Southport, QLD, 4215, Australia
| | - Jessica F Briffa
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Dayana Mahizir
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Andrew J Jefferies
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Sogand Hosseini
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, VIC, 3083, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia.,Child Health Research Centre, The University of Queensland, South Brisbane, QLD, 4101, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, VIC, 3010, Australia
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14
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Romano T, Hryciw DH, Westcott KT, Wlodek ME. Puberty onset is delayed following uteroplacental insufficiency and occurs earlier with improved lactation and growth for pups born small. Reprod Fertil Dev 2018; 29:307-318. [PMID: 26259538 DOI: 10.1071/rd15151] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 07/01/2015] [Indexed: 11/23/2022] Open
Abstract
Being born small programs adult diseases later in life, with the early postnatal growth rate in growth-restricted offspring playing a role in the reduction of the risk of disease in adulthood. In addition, early postnatal growth is critical for puberty onset (PO). Using cross-fostering, we determined the effects of growth restriction and prenatal and postnatal environments on PO and sex steroids. Bilateral uterine vessel ligation (Restricted) or sham surgery (Control), performed on Gestational Day 18 in Wistar-Kyoto rats induced fetal growth restriction. Control, Reduced (Control litter size reduced to five pups) and Restricted pups were cross-fostered onto different Control (normal lactation) or Restricted (impaired lactation) mothers on Day 1. The day of vaginal opening (females) and balanopreputial separation (males) characterised PO. Blood was sampled for sex steroid and leptin analysis. Restricted pups were born lighter than Controls (P<0.05). PO was delayed by 3.4-4 days in Restricted-on-Restricted males and females (P<0.05). Plasma leptin concentrations at PO were lower in both sexes in all groups compared with Restricted-on-Control and Control-on-Control (P<0.05). PO occurred earlier in Restricted-on-Control (~2 days) with normal leptin concentrations and accelerated growth compared with Restricted-on-Restricted (P<0.05). Testosterone concentrations were lower in male Restricted-on-Restricted than Control-on-Control at 6 months (P<0.05). Restricted-on-Restricted females had lower progesterone at PO compared with Control-on-Control (P<0.05). Female Restricted-on-Restricted had lower oestradiol, with Restricted-on-Control having higher testosterone concentrations at 6 months than Control-on-Control (P<0.05). Growth restriction reduced postnatal growth and leptin concentrations, delaying PO in both sexes and programming altered sex steroids. This highlights the importance of the interaction between prenatal and postnatal growth in the programming of adult reproductive status.
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Affiliation(s)
- Tania Romano
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
| | - Deanne H Hryciw
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
| | - Kerryn T Westcott
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
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15
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Cuffe JSM, Briffa JF, Rosser S, Siebel AL, Romano T, Hryciw DH, Wlodek ME, Moritz KM. Uteroplacental insufficiency in rats induces renal apoptosis and delays nephrogenesis completion. Acta Physiol (Oxf) 2018; 222. [PMID: 29047216 DOI: 10.1111/apha.12982] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2017] [Revised: 10/08/2017] [Accepted: 10/10/2017] [Indexed: 12/28/2022]
Abstract
AIM Uteroplacental insufficiency in rats reduces nephron endowment, leptin concentrations and programmes cardiorenal disease in offspring. Cross-fostering growth-restricted (Restricted) offspring onto a mother with normal lactation restores leptin concentrations and nephron endowment. This study aimed to determine whether the reduced nephron endowment in Restricted offspring is due to delayed glomerular formation and dysregulation of renal genes regulating branching morphogenesis, apoptosis or leptin signalling. Furthermore, we aimed to investigate whether cross-fostering Restricted offspring onto Control mothers could improve glomerular maturation and restore renal gene abundance. METHODS Uteroplacental insufficiency was induced by bilateral uterine vessel ligation (Restricted) or sham (Control) surgery on gestation day 18 (E18). Kidneys were collected at E20, postnatal day 1 (PN1) and PN7. An additional cohort was cross-fostered onto separate mothers at birth and kidneys collected at PN7. RESULTS Kidneys were lighter in the Restricted group, but weight was restored with cross-fostering. At E20, abundance of Bax, Flt1 and Vegfa was increased in Restricted offspring, while Ret and Bcl2 transcripts were increased only in Restricted females. At PN7, abundance of Gdnf and Ret was higher in Restricted offspring, as was Casp3. Restricted offspring had a wider nephrogenic zone with more immature glomeruli suggesting a delayed or extended nephrogenic period. Cross-fostering had subtle effects on gene abundance and glomerular maturity. CONCLUSION Uteroplacental insufficiency induced apoptosis in the developing kidney and delayed and extended nephrogenesis. Cross-fostering Restricted offspring onto Control mothers had beneficial effects on kidney growth and renal maturity, which may contribute to the restoration of nephron endowment.
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Affiliation(s)
- J. S. M. Cuffe
- School of Biomedical Sciences; The University of Queensland; St. Lucia Qld Australia
- School of Medical Science; Menzies Health Institute Queensland; Griffith University; Southport Qld Australia
| | - J. F. Briffa
- Department of Physiology; The University of Melbourne; Parkville Vic. Australia
| | - S. Rosser
- School of Biomedical Sciences; The University of Queensland; St. Lucia Qld Australia
| | - A. L. Siebel
- Department of Physiology; The University of Melbourne; Parkville Vic. Australia
| | - T. Romano
- Department of Physiology, Anatomy and Microbiology; La Trobe University; Bundoora Vic. Australia
| | - D. H. Hryciw
- Department of Physiology; The University of Melbourne; Parkville Vic. Australia
| | - M. E. Wlodek
- Department of Physiology; The University of Melbourne; Parkville Vic. Australia
| | - K. M. Moritz
- School of Biomedical Sciences; The University of Queensland; St. Lucia Qld Australia
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16
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Anevska K, Cheong JN, Wark JD, Wlodek ME, Romano T. Maternal stress does not exacerbate long-term bone deficits in female rats born growth restricted, with differential effects on offspring bone health. Am J Physiol Regul Integr Comp Physiol 2018; 314:R161-R170. [DOI: 10.1152/ajpregu.00215.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Females born growth restricted have poor adult bone health. Stress exposure during pregnancy increases risk of pregnancy complications. We determined whether maternal stress exposure in growth-restricted females exacerbates long-term maternal and offspring bone phenotypes. On gestational day 18, bilateral uterine vessel ligation (restricted) or sham (control) surgery was performed on Wistar-Kyoto rats. At 4 mo, control and restricted females were mated and allocated to unstressed or stressed pregnancies. Stressed pregnancies had physiological measurements performed; unstressed females were not handled. After birth, mothers were aged to 13 mo. Second-generation (F2) offspring generated four experimental groups: control unstressed, restricted unstressed, control stressed and restricted stressed. F2 offspring were studied at postnatal day 35 (PN35), 6, 12, and 16 mo. Peripheral quantitative computed tomography was performed on maternal and F2 offspring femurs. Restricted females, irrespective of stress during pregnancy, had decreased endosteal circumference, bending strength, and increased osteocalcin concentrations after pregnancy at 13 mo. F2 offspring of stressed mothers were born lighter. F2 male offspring from stressed pregnancies had decreased trabecular content at 6 mo and decreased endosteal circumference at 16 mo. F2 female offspring from growth-restricted mothers had reduced cortical thickness at PN35 and reduced endosteal circumference at 6 mo. At 12 mo, females from unstressed restricted and stressed control mothers had decreased trabecular content. Low birth weight females had long-term bone changes, highlighting programming effects on bone health. Stress during pregnancy did not exacerbate these programmed effects. Male and female offspring responded differently to maternal growth restriction and stress, indicating gender-specific programming effects.
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Affiliation(s)
- Kristina Anevska
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Australia
- Department of Physiology, The University of Melbourne, Parkville, Australia
| | - Jean N. Cheong
- Department of Physiology, The University of Melbourne, Parkville, Australia
| | - John D. Wark
- Department of Medicine, The University of Melbourne and Bone and Mineral Medicine, Royal Melbourne Hospital, Parkville, Australia
| | - Mary E. Wlodek
- Department of Physiology, The University of Melbourne, Parkville, Australia
| | - Tania Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Australia
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Mangwiro Y, Cuffe J, Briffa J, Hosseini S, Mahizir D, Anevska K, Romano T, Moritz K, Wlodek M. Exercise initiated during pregnancy reduces blood spaces in males, despite increasing placental angiogenic markers. Placenta 2017. [DOI: 10.1016/j.placenta.2017.07.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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18
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Mangwiro Y, Cuffe J, Briffa J, Mahizir D, Anevska K, Romano T, Moritz K, Wlodek M. Sex-specific placental IGF-system adaptations to maternal exercise in growth restricted mothers. Placenta 2017. [DOI: 10.1016/j.placenta.2017.07.073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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19
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Romano T, Wark JD, Wlodek ME. Developmental programming of bone deficits in growth-restricted offspring. Reprod Fertil Dev 2017; 27:823-33. [PMID: 24613152 DOI: 10.1071/rd13388] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 01/28/2014] [Indexed: 01/21/2023] Open
Abstract
Recent evidence links low birthweight and poor adult bone health. We characterised bone size, mineral content, density and strength (stress strain index of bone bending strength (SSI)) in rats from weaning to 12 months. Bilateral uterine vessel ligation (Restricted) or sham surgery (Control) was performed on gestational Day 18 in rats inducing uteroplacental insufficiency. Postmortem of male and female offspring was performed at postnatal Day 35 and at 2, 4, 6 and 12 months. Femur mineral content, density and strength were measured using quantitative computed tomography (pQCT). Restricted pups were born 10%-15% lighter and remained smaller with shorter femurs than Controls (P<0.05). Male and female Restricted rats had lower trabecular bone content compared with Controls (P<0.05), without trabecular density changes. Cortical content was reduced in Restricted males (Day 35 and 6 and 12 months) and at all ages in Restricted females (P<0.05). Cortical density was lower at Day 35 in Restricted males (P<0.05). SSI was lower at Day 35 and at 6 and 12 months in Restricted males, and at all ages in Restricted females (P<0.05). Skeletal deficits were detected in Restricted offspring with gender-specific differences during juvenile and adolescent periods. Bone deficits observed at 6 months in males were greater than at 12 months, indicating that aging can exacerbate programmed bone phenotypes.
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Affiliation(s)
- Tania Romano
- Department of Human Biosciences, La Trobe University, Bundoora, Vic. 3086, Australia
| | - John D Wark
- Department of Medicine, The University of Melbourne, Parkville, Vic. 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville, Vic. 3010, Australia
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Briffa JF, O'Dowd R, Moritz KM, Romano T, Jedwab LR, McAinch AJ, Hryciw DH, Wlodek ME. Uteroplacental insufficiency reduces rat plasma leptin concentrations and alters placental leptin transporters: ameliorated with enhanced milk intake and nutrition. J Physiol 2017; 595:3389-3407. [PMID: 28369926 DOI: 10.1113/jp273825] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Accepted: 02/08/2017] [Indexed: 12/13/2022] Open
Abstract
KEY POINTS Uteroplacental insufficiency compromises maternal mammary development, milk production and pup organ development; this is ameliorated by cross-fostering, which improves pup growth and organ development and prevents adult diseases in growth-restricted (Restricted) offspring by enhancing postnatal nutrition. Leptin is transported to the fetus from the mother by the placenta; we report reduced plasma leptin concentrations in Restricted fetuses associated with sex-specific alterations in placental leptin transporter expression. Pup plasma leptin concentrations were also reduced during suckling, which may suggest reduced milk leptin transport or leptin reabsorption. Mothers suckled by Restricted pups had impaired mammary development and changes in milk fatty acid composition with no alterations in milk leptin; cross-fostering restored pup plasma leptin concentrations, which may be correlated to improved milk composition and intake. Increased plasma leptin and altered milk fatty acid composition in Restricted pups suckling mothers with normal lactation may improve postnatal growth and prevent adult diseases. ABSTRACT Uteroplacental insufficiency reduces birth weight and adversely affects fetal organ development, increasing adult disease risk. Cross-fostering improves postnatal nutrition and restores these deficits. Mothers with growth-restricted pups have compromised milk production and composition; however, the impact cross-fostering has on milk production and composition is unknown. Plasma leptin concentrations peak during the completion of organogenesis, which occurs postnatally in rats. Leptin is transferred to the fetus via the placenta and to the pup via the lactating mammary gland. This study investigated the effect of uteroplacental insufficiency on pup plasma leptin concentrations and placental leptin transporters. We additionally examined whether cross-fostering improves mammary development, milk composition and pup plasma leptin concentrations. Fetal growth restriction was induced by bilateral uterine vessel ligation surgery on gestation day 18 in Wistar Kyoto rats (termed uteroplacental insufficiency surgery mothers). Growth-restricted (Restricted) fetuses had reduced plasma leptin concentrations, persisting throughout lactation, and sex-specific alterations in placental leptin transporters. Mothers suckled by Restricted pups had impaired mammary development, altered milk fatty acid composition and increased plasma leptin concentrations, despite no changes in milk leptin. Milk intake was reduced in Restricted pups suckling uteroplacental insufficiency surgery mothers compared to Restricted pups suckling sham-operated mothers. Cross-fostering Restricted pups onto a sham-operated mother improved postnatal growth and restored plasma leptin concentrations compared to Restricted pups suckling uteroplacental insufficiency surgery mothers. Uteroplacental insufficiency alters leptin homeostasis. This is ameliorated with cross-fostering and enhanced milk fatty acid composition and consumption, which may protect the pups from developing adverse health conditions in adulthood.
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Affiliation(s)
- Jessica F Briffa
- Department of Physiology, The University of Melbourne, Victoria, 3010, Australia
| | - Rachael O'Dowd
- Department of Physiology, The University of Melbourne, Victoria, 3010, Australia
| | - Karen M Moritz
- School of Biomedical Sciences, The University of Queensland, St Lucia, QLD, 4072, Australia
| | - Tania Romano
- Department of Human Biosciences, LaTrobe University, Bundoora, VIC, 3083, Australia
| | - Lisa R Jedwab
- Department of Physiology, The University of Melbourne, Victoria, 3010, Australia
| | - Andrew J McAinch
- Centre for Chronic Disease, College of Health and Biomedicine, Victoria University, St Albans, VIC, 3021, Australia
| | - Deanne H Hryciw
- Department of Physiology, The University of Melbourne, Victoria, 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Victoria, 3010, Australia
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Brady R, Grills B, Romano T, Wark J, O’Brien T, Shultz S, McDonald S. Sodium selenate treatment mitigates reduction of bone volume following traumatic brain injury in rats. J Musculoskelet Neuronal Interact 2016; 16:369-376. [PMID: 27973389 PMCID: PMC5259578] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVES Administration of sodium selenate to rats given traumatic brain injury (TBI) attenuates brain damage and improves long-term behavioural outcomes. We have previously provided evidence that TBI causes bone loss in rats, however the effect of sodium selenate treatment on bone quantity following TBI is unknown. METHODS Rats were randomly assigned into sham injury or fluid percussion injury (FPI) groups and administered saline or sodium selenate for 12 weeks post-injury. Femora were analysed using histomorphometry, peripheral quantitative computed tomography (pQCT) and biomechanical testing. RESULTS Distal metaphyseal trabecular bone volume fraction of FPI-selenate rats was higher than FPI-vehicle rats (41.8%; p<0.01), however, femora from selenate-treated groups were shorter in length (4.3%; p<0.01) and had increased growth plate width (22.1%; p<0.01), indicating that selenate impaired long bone growth. pQCT analysis demonstrated that distal metaphyseal cortical thickness was decreased in TBI rats compared to shams (11.7%; p<0.05), however selenate treatment to TBI animals offset this reduction (p<0.05). At the midshaft we observed no differences in biomechanical measures. CONCLUSION These are the first findings to indicate that mitigating TBI-induced neuropathology may have the added benefit of preventing osteoporosis and associated fracture risk following TBI.
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Affiliation(s)
- R.D. Brady
- Department of Physiology, Anatomy and Microbiology, La Trobe University, VIC, 3086
| | - B.L. Grills
- Department of Physiology, Anatomy and Microbiology, La Trobe University, VIC, 3086
| | - T. Romano
- Department of Physiology, Anatomy and Microbiology, La Trobe University, VIC, 3086
| | - J.D. Wark
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, VIC, 3010, Australia
| | - T.J. O’Brien
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, VIC, 3010, Australia
| | - S.R. Shultz
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, VIC, 3010, Australia
| | - S.J. McDonald
- Department of Physiology, Anatomy and Microbiology, La Trobe University, VIC, 3086,Corresponding author: Stuart McDonald, Department of Physiology, Anatomy and Microbiology, La Trobe University, VIC, 3086, Australia E-mail:
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Brady RD, Shultz SR, Sun M, Romano T, van der Poel C, Wright DK, Wark JD, O'Brien TJ, Grills BL, McDonald SJ. Experimental Traumatic Brain Injury Induces Bone Loss in Rats. J Neurotrauma 2016; 33:2154-2160. [PMID: 25686841 DOI: 10.1089/neu.2014.3836] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Few studies have investigated the influence of traumatic brain injury (TBI) on bone homeostasis; however, pathophysiological mechanisms involved in TBI have potential to be detrimental to bone. The current study assessed the effect of experimental TBI in rats on the quantity and quality of two different weight-bearing bones, the femur and humerus. Rats were randomly assigned into either sham or lateral fluid percussion injury (FPI) groups. Open-field testing to assess locomotion was conducted at 1, 4, and 12 weeks post-injury, with the rats killed at 1 and 12 weeks post-injury. Bones were analyzed using peripheral quantitative computed tomography (pQCT), histomorphometric analysis, and three-point bending. pQCT analysis revealed that at 1 and 12 weeks post-injury, the distal metaphyseal region of femora from FPI rats had reduced cortical content (10% decrease at 1 week, 8% decrease at 12 weeks; p < 0.01) and cortical thickness (10% decrease at 1 week, 11% decrease at 12 weeks p < 0.001). There was also a 23% reduction in trabecular bone volume ratio at 1 week post-injury and a 27% reduction at 12 weeks post-injury in FPI rats compared to sham (p < 0.001). There were no differences in bone quantity and mechanical properties of the femoral midshaft between sham and TBI animals. There were no differences in locomotor outcomes, which suggested that post-TBI changes in bone were not attributed to immobility. Taken together, these findings indicate that this rat model of TBI was detrimental to bone and suggests a link between TBI and altered bone remodeling.
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Affiliation(s)
- Rhys D Brady
- 1 Department of Physiology, Anatomy and Microbiology, La Trobe University , Bundoora, VIC, Australia
| | - Sandy R Shultz
- 2 Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne , Parkville, VIC, Australia
| | - Mujun Sun
- 2 Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne , Parkville, VIC, Australia
| | - Tania Romano
- 1 Department of Physiology, Anatomy and Microbiology, La Trobe University , Bundoora, VIC, Australia
| | - Chris van der Poel
- 1 Department of Physiology, Anatomy and Microbiology, La Trobe University , Bundoora, VIC, Australia
| | - David K Wright
- 3 Anatomy and Neuroscience, The University of Melbourne , Parkville, VIC, Australia .,4 The Florey Institute of Neuroscience and Mental Health, The University of Melbourne , Parkville, VIC, Australia
| | - John D Wark
- 2 Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne , Parkville, VIC, Australia
| | - Terence J O'Brien
- 2 Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne , Parkville, VIC, Australia
| | - Brian L Grills
- 1 Department of Physiology, Anatomy and Microbiology, La Trobe University , Bundoora, VIC, Australia
| | - Stuart J McDonald
- 1 Department of Physiology, Anatomy and Microbiology, La Trobe University , Bundoora, VIC, Australia
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Anevska K, Gallo LA, Tran M, Jefferies AJ, Wark JD, Wlodek ME, Romano T. Pregnant growth restricted female rats have bone gains during late gestation which contributes to second generation adolescent and adult offspring having normal bone health. Bone 2015; 74:199-207. [PMID: 25659207 DOI: 10.1016/j.bone.2015.01.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 01/21/2015] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
Abstract
Low birth weight, due to uteroplacental insufficiency, results in programmed bone deficits in the first generation (F1). These deficits may be passed onto subsequent generations. We characterized the effects of being born small on maternal bone health during pregnancy; and aimed to characterize the contribution of the maternal environment and germ line effects to bone health in F2 offspring from mothers born small. Bilateral uterine vessel ligation (or sham) surgery was performed on female F0 WKY rats on gestational day 18 (term 22days) to induce uteroplacental insufficiency and fetal growth restriction. Control and Restricted F1 female offspring were allocated to a non-pregnant or pregnant group. To generate F2 offspring, F1 females were allocated to either non-embryo or embryo transfer groups. Embryo transfer was performed on gestational day 1, where second generation (F2) embryos were gestated (donor-in-recipient) in either a Control (Control-in-Control, Restricted-in-Control) or Restricted (Control-in-Restricted, Restricted-in-Restricted) mother. Restricted F1 females were born 10-15% lighter than Controls. Restricted non-pregnant females had shorter femurs, reduced trabecular and cortical bone mineral contents, trabecular density and bone geometry measures determined by peripheral quantitative computed tomography (pQCT) compared to non-pregnant Controls. Pregnancy restored the bone deficits that were present in F1 Restricted females. F2 non-embryo transfer male and female offspring were born of normal weight, while F2 embryo transfer males and females gestated in a Control mother (Control-in-Control, Restricted-in-Control) were heavier at birth compared to offspring gestated in a Restricted mother (Restricted-in-Restricted, Control-in-Restricted). Male F2 Restricted embryo groups (Restricted-in-Control and Restricted-in-Restricted) had accelerated postnatal growth. There was no transmission of bone deficits present at 35days or 6months in F2 offspring. Embryo transfer procedure had confounding effects preventing the separation of maternal environment and germ line contribution to outcomes. Deficits present in F1 non-pregnant Restricted females were absent during late gestation, indicating that pregnant F1 Restricted females experienced gains in bone. These beneficial maternal pregnancy adaptations may have prevented transmission of bone deficits to F2 offspring.
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Affiliation(s)
- Kristina Anevska
- Department of Human Biosciences, La Trobe University, Bundoora 3086, Australia
| | - Linda A Gallo
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia
| | - Melanie Tran
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia
| | - Andrew J Jefferies
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia
| | - John D Wark
- Department of Medicine, The University of Melbourne, Parkville 3050, Australia; Bone and Mineral Medicine, Royal Melbourne Hospital, Parkville 3050, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Parkville 3010, Australia
| | - Tania Romano
- Department of Human Biosciences, La Trobe University, Bundoora 3086, Australia.
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Abstract
Emerging research has highlighted the importance of leptin in fetal growth and development independent of its essential role in the maintenance of hunger and satiety through the modulation of neuropeptide Y and proopiomelanocortin neurons. Alterations in maternal-placental-fetal leptin exchange may modify the development of the fetus and contribute to the increased risk of developing disease in adulthood. In addition, leptin also plays an important role in reproductive functions, with plasma leptin concentrations rising in pregnant women, peaking during the third trimester. Elevated plasma leptin concentrations occur at the completion of organogenesis, and research in animal models has demonstrated that leptin is involved in the development and maturation of a number of organs, including the heart, brain, kidneys, and pancreas. Elevated maternal plasma leptin is associated with maternal obesity, and reduced fetal plasma leptin is correlated with intrauterine growth restriction. Alterations in plasma leptin during development may be associated with an increased risk of developing a number of adulthood diseases, including cardiovascular, metabolic, and renal diseases via altered fetal development and organogenesis. Importantly, research has shown that leptin antagonism after birth significantly reduces maturation of numerous organs. Conversely, restoration of the leptin deficiency after birth in growth-restricted animals restores the offspring's body weight and improves organogenesis. Therefore, leptin appears to play a major role in organogenesis, which may adversely affect the risk of developing a number of diseases in adulthood. Therefore, greater understanding of the role of leptin during development may assist in the prevention and treatment of a number of disease states that occur in adulthood.
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Affiliation(s)
- Jessica F Briffa
- Department of Physiology, University of Melbourne, Parkville, Australia
| | - Andrew J McAinch
- Centre for Chronic Disease Prevention and Management, College of Health and Biomedicine, Victoria University, St. Albans, Australia; and
| | - Tania Romano
- Department of Human Biosciences, Latrobe University, Bundoora, Australia
| | - Mary E Wlodek
- Department of Physiology, University of Melbourne, Parkville, Australia
| | - Deanne H Hryciw
- Department of Physiology, University of Melbourne, Parkville, Australia;
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Romano T, Wark JD, Wlodek ME. Physiological skeletal gains and losses in rat mothers during pregnancy and lactation are not observed following uteroplacental insufficiency. Reprod Fertil Dev 2015; 26:385-94. [PMID: 23477709 DOI: 10.1071/rd12378] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Accepted: 02/10/2013] [Indexed: 11/23/2022] Open
Abstract
Fluctuations in maternal bone mass during pregnancy and lactation facilitate calcium transfer to offspring. Uteroplacental insufficiency causes fetal growth restriction and programs poor adult bone health. We aimed to characterise maternal skeletal phenotype during normal pregnancy and pregnancy complicated by uteroplacental insufficiency. Uteroplacental restriction (Restricted) or sham surgery (Control) was performed on gestational Day 18 (term=22 days) in pregnant Wistar-Kyoto rats. Maternal right femurs were collected on embryonic Day 20, postnatal Day 1 and Weeks 5, 7 and 9 postnatal. Dual-energy X-ray absorptiometry was used to quantify global bone mineral content, density and body composition. Peripheral quantitative computed tomography was utilised to determine trabecular and cortical content, density, circumferences and strength. Control rats exhibited expected reductions in trabecular and cortical content, density and bone strength from embryonic Day 20 to postnatal Day 1 (P<0.05). These skeletal alterations were absent in Restricted rats. By postnatal Day 7, bone parameters in Control and Restricted rats were not different from non-pregnant rats, indicating restoration of maternal bone. The lack of bone loss in mothers suffering uteroplacental insufficiency suggests that calcium transfer to pups would be impaired. This reduction in calcium availability is a likely contributor to the programming of poor adult bone health in growth-restricted offspring.
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Affiliation(s)
- Tania Romano
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
| | - John D Wark
- Department of Medicine, The University of Melbourne, Vic. 3010, Australia
| | - Mary E Wlodek
- Department of Physiology, The University of Melbourne, Vic. 3010, Australia
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Romano T, Anevska K, Gallo L, Tran M, Wark J, Wlodek M. Transgenerational transmission of bone deficits in growth restricted offspring (137.6). FASEB J 2014. [DOI: 10.1096/fasebj.28.1_supplement.137.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Tania Romano
- Human Biosciences LA Trobe University MelbourneAustralia
| | | | - Linda Gallo
- Physiology The University of MelbourneMelbourneAustralia
| | - Melanie Tran
- Physiology The University of MelbourneMelbourneAustralia
| | - John Wark
- Medicine The University of MelbourneMelbourneAustralia
| | - Mary Wlodek
- Physiology The University of MelbourneMelbourneAustralia
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Gok Oguz E, Olmaz R, Turgutalp K, Muslu N, Sungur MA, Kiykim A, Van Biesen W, Vanmassenhove J, Glorieux G, Vanholder R, Chew S, Forster K, Kaufeld T, Kielstein J, Schilling T, Haverich A, Haller H, Schmidt B, Hu P, Liang X, Liang X, Chen Y, LI R, Jiang F, LI Z, Shi W, Lim CCW, Lim CCW, Chia CML, Tan AK, Tan CS, Hu P, Liang X, Liang X, Chen Y, LI R, Jiang F, LI Z, Shi W, Ng R, Subramani S, Chew S, Perez de Jose A, Bernis Carro C, Madero Jarabo R, Bustamante J, Sanchez Tomero JA, Chung W, Ro H, Chang JH, Lee HH, Jung JY, Vanmassenhove J, Van Biesen W, Glorieux G, Vanholder R, Fazzari L, Giuliani A, Scrivano J, Pettorini L, Benedetto U, Luciani R, Roscitano A, Napoletano A, Coclite D, Cordova E, Punzo G, Sinatra R, Mene P, Pirozzi N, Shavit L, Shavit L, Manilov R, Algur N, Wiener-Well Y, Slotki I, Pipili C, Pipili C, Vrettou CS, Avrami K, Economidou F, Glynos K, Ioannidou S, Markaki V, Douka E, Nanas S, De Pascalis A, De Pascalis A, Cofano P, Proia S, Valletta A, Vitale O, Russo F, Buongiorno E, Filiopoulos V, Biblaki D, Lazarou D, Chrysis D, Fatourou M, Lafoyianni S, Vlassopoulos D, Zakiyanov O, Kriha V, Vachek J, Svarcova J, Zima T, Tesar V, Kalousova M, Kaushik M, Kaushik M, Ronco C, Cruz D, Zhang L, Zhang W, Zhang W, Chen N, Ejaz AA, Kambhampati G, Ejaz N, Dass B, Lapsia V, Arif AA, Asmar A, Shimada M, Alsabbagh M, Aiyer R, Johnson R, Chen TH, Chang CH, Chang MY, Tian YC, Hung CC, Fang JT, Yang CW, Chen YC, Cantaluppi V, Quercia AD, Figliolini F, Giacalone S, Pacitti A, Gai M, Guarena C, Leonardi G, Leonardi G, Biancone L, Camussi G, Segoloni GP, De Cal M, Lentini P, Clementi A, Virzi GM, Scalzotto E, Ronco C, Lacquaniti A, Lacquaniti A, Donato V, Fazio MR, Lucisano S, Cernaro V, Lupica R, Buemi M, Turgutalp K, Helvaci I, Anik E, Kiykim A, Wani M, Wani DI, Bhat DMA, Banday DK, Najar DMS, Reshi DAR, Palla DNA, Turgutalp K, Kiykim A, Helvaci I, Iglesias P, Olea T, Vega-Cabrera C, Heras M, Bajo MA, Del Peso G, Arias MJ, Selgas R, Diez JJ, Daher E, Costa PL, Pereira ENS, Santos RDP, Abreu KL, Silva Junior G, Pereira EDB, Raimundo M, Crichton S, Syed Y, Martin J, Whiteley C, Bennett D, Ostermann M, Gjyzari A, Thereska N, Koroshi A, Barbullushi M, Kodra S, Idrizi A, Strakosha A, Petrela E, Raimundo M, Crichton S, Syed Y, Martin J, Lemmich Smith J, Bennett D, Ostermann M, Klimenko A, Tuykhmenev E, Villevalde S, Kobalava Z, Avdoshina S, Villevalde S, Tyukhmenev E, Efremovtseva M, Kobalava Z, Hayashi H, Hayashi H, Suzuki S, Kataoka K, Kondoh Y, Taniguchi H, Sugiyama D, Nishimura K, Sato W, Maruyama S, Matsuo S, Yuzawa Y, Geraldine D, Muriel F, Alexandre H, Eric R, Fu P, Zhang L, Pozzato M, Ferrari F, Cecere P, Mesiano P, Vallero A, Livigni S, Quarello F, Hudier L, Decaux O, Haddj-Elmrabet A, Mandart L, Lino-Daniel M, Bridoux F, Renaudineau E, Sawadogo T, Le Pogamp P, Vigneau C, Famee D, Koo HM, Oh HJ, Han SH, Choi KH, Kang SW, Mehdi M, Nicolas M, Mariat C, Shah P, Kute VB, Vanikar A, Gumber M, Patel H, Trivedi H, Pipili C, Pipili C, Manetos C, Vrettou CS, Poulaki S, Tripodaki ES, Papastylianou A, Routsi C, Nanas S, Uchida K, Kensuke U, Yamagata K, Saitou C, Okada M, Chita G, Davies M, Veriawa Y, Naicker S, Mukhopadhyay P, Mukherjee D, Mishra R, Kar M, Zickler D, Wesselmann H, Schindler R, Gutierrez* E, Egido J, Rubio-Navarro A, Buendia I, Blanco-Colio LM, Toldos O, Manzarbeitia F, De Lorenzo A, Sanchez R, Praga^ M, Moreno^ JA, Kim MY, Kang NR, Jang HR, Lee JE, Huh W, Kim YG, Kim DJ, Hong SC, Kim JS, Oh HY, Okamoto T, Kamata K, Naito S, Tazaki H, Kan S, Anne-Kathrin LG, Matthias K, Speer T, Andreas L, Heinrich G, Thomas V, Poppleton A, Danilo F, Matthias K, Lai CF, Wu VC, Shiao CC, Huang TM, Wu KD, Bedford M, Farmer C, Irving J, Stevens P, Patera F, Patera F, Mattozzi F, Battistoni S, Fagugli RM, Park MY, Choi SJ, Kim JG, Hwang SD, Xie H, Chen H, Xu S, He Q, Liu J, Hu W, Liu Z, Dalboni M, Blaya R, Quinto BM, Narciso R, Oliveira M, Monte J, Durao M, Cendoroglo M, Batista M, Hanemann AL, Liborio A, Daher E, Martins A, Pinheiro MCC, Silva Junior G, Meneses G, De Paula Pessoa R, Sousa M, Bezerra FSM, Albuquerque PLMM, Lima JB, Lima CB, Veras MDSB, Silva Junior G, Daher E, Nemoto Matsui T, Totoli C, Cruz Andreoli MC, Vilela Coelho MP, Guimaraes de Souza NK, Ammirati AL, De Carvalho Barreto F, Ferraz Neto BH, Fortunato Cardoso Dos Santos B, Abraham A, Abraham G, Mathew M, Duarte PMA, Duarte FB, Barros EM, Castro FQS, Silva Junior G, Daher E, Palomba H, Castro I, Sousa SR, Jesus AN, Romano T, Burdmann E, Yu L, Kwon SH, You JY, Hyun YK, Woo SA, Jeon JS, Noh HJ, Han DC, Tozija L, Tozija L, Petronievic Z, Selim G, Nikolov I, Stojceva-Taneva O, Cakalaroski K, Lukasz A, Beneke J, Schmidt B, Kielstein J, Haller H, Menne J, Schiffer M, Polanco N, Hernandez E, Gutierrez E, Gutierrez Millet V, Gonzalez Monte E, Morales E, Praga M, Francisco Javier L, Nuria GF, Jose Maria MG, Bes Rastrollo M, Angioi A, Conti M, Cao R, Atzeni A, Pili G, Matta V, Murgia E, Melis P, Binda V, Pani A, Thome* F, Leusin F, Barros E, Morsch C, Balbinotto A, Pilla C, Premru V, Buturovic-Ponikvar J, Ponikvar R, Marn-Pernat A, Knap B, Kovac J, Gubensek J, Kersnic B, Krnjak L, Prezelj M, Granatova J, Havrda M, Hruskova Z, Kratka K, Remes O, Mokrejsova M, Bolkova M, Lanska V, Rychlik I, Uniacke MD, Lewis RJ, Harris S, Roderick P, Thome* F, Balbinotto A, Barros E, Morsch C, Martin N, Ulrich K, Jan B, Jorn B, Reinhard B, Jan K, Hermann H, Meyer Tobias F, Leyla R, Schmidt Bernhard MW, Harald S, Jurgen S, Tanja K, Menne J, Mario S, Jan B, Jan B, Sang Hi E, Leyla R, Claus M, Frank V, Aleksej S, Sengul S, Jan K, Jorn B, Reinhard B, Meyer Tobias F, Schmidt Bernhard MW, Mario S, Martin N, Ulrich K, Robert S, Karin W, Tanja K, Hermann H, Menne J, Leyla R, Leyla R, Jan K, Jan B, Reinhard B, Feikah G, Hermann H, Tanja K, Ulrich K, Menne Tobias F, Claus M, Martin N, Mario S, Schmidt Bernhard MW, Harald S, Jurgen S, Menne J, Claus M, Claus M, Jan K, Jan B, Reinhard B, Feikah G, Hermann H, Ulrich K, Menne Tobias F, Meyer Tobias N, Martin N, Leyla R, Schmidt Bernhard MW, Harald S, Jurgen S, Tanja K, Mario S, Menne J, Kielstein J, Beutel G, Fleig S, Steinhoff J, Meyer T, Hafer C, Bramstedt J, Busch V, Vischedyk M, Kuhlmann U, Ries W, Mitzner S, Mees S, Stracke S, Nurnberger J, Gerke P, Wiesner M, Sucke B, Abu-Tair M, Kribben A, Klause N, Schindler R, Merkel F, Schnatter S, Dorresteijn E, Samuelsson O, Brunkhorst R, Stec-Hus Registry G, Reising A, Hafer C, Kielstein J, Schmidt B, Bange FC, Hiss M, Vetter F, Kielstein J, Beneke J, Bode-Boger SM, Martens-Lobenhoffer J, Schiffer M, Schmidt BMW, Haller H, Menne J, Kielstein JT, Shin HS, Jung YS, Rim H. AKI - Clinical. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Murgia F, Cilli M, Renzetti E, Popa N, Romano T, Alghisi F, Bella S. [Economic evaluation of telehomecare in chronic lung diseases]. Clin Ter 2011; 162:e43-e49. [PMID: 21533308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
OBJECTIVES We attempted to quantify the cost-effectiveness ratio in telemonitoring lung function of patients affected by Cystic Fibrosis (CF). MATERIALS AND METHODS We examined the costs of Telehomecare (THC) in the follow-up of CF patients. We considered the failed hospitalizations as incomes. A standardized questionnaire was submitted by e-mail to verify the patient satisfaction and expectation levels. We studied 3 groups of patients: a) 17 CF patients in THC; b) 28 CF patients not followed by THC and c) 28 non-CF patients affected by chronic diseases and not followed by THC. Some parameters with no market value were evaluated using "willingness to pay" (WTP). RESULTS An annual saving of €.5241 was calculated for single FC patient followed by THC. The WTP analysis showed that patients affected by chronic diseases expected very much from new technologies. CONCLUSIONS The THC use in CF shows several advantages as fewer hospitalization and economical saving in a general trend of limited economical resources. Further studies are needed to confirm our data.
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Affiliation(s)
- F Murgia
- U.O.C. Fibrosi Cistica, Ospedale Pediatrico Bambino Gesù - IRCCS - Roma, Italy.
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Romano T, Wark JD, Wlodek ME. Calcium supplementation does not rescue the programmed adult bone deficits associated with perinatal growth restriction. Bone 2010; 47:1054-63. [PMID: 20817129 DOI: 10.1016/j.bone.2010.08.020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [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: 05/10/2010] [Revised: 08/23/2010] [Accepted: 08/27/2010] [Indexed: 11/19/2022]
Abstract
Low birth weight and poor childhood growth program a variety of adult diseases including bone disorders such as osteoporosis. We have previously reported that offspring born small, as a result of uteroplacental insufficiency, have shorter femurs, lower bone mineral content and a bone strength deficit as adults. The aim of this study was to determine the effects of calcium supplementation from adolescence on growth restricted male and female offspring which have a programmed bone deficit. Bilateral uterine vessel ligation (Restricted) or sham surgery (Control) was performed on gestational day 18 in WKY rats to induce uteroplacental insufficiency and growth restriction. At 2 months pups were allocated to one of four diet groups: diet 1-constant normal calcium diet, diet 2-variable normal calcium diet, diet 3-constant high calcium diet, diet 4-variable high calcium diet. Diet groups 1 and 3 were fed their respective diets constantly for the duration of the study. In groups 2 and 4, rats were fed one diet for 5 days, followed by a switch to a low calcium diet for the next 5 days. At 6 months Dual Energy Xray Absorptiometry (DXA) and Peripheral Quantitative Computed Tomography (pQCT) were performed on the right femur. Bone turnover markers were measured at 4 months. Male and female Restricted offspring were born 14% lighter compared to Controls (p<0.05). At 6 months both male and female Restricted offspring remained smaller and had shorter femurs compared to Controls (p<0.05). Restricted males and females had reduced trabecular and cortical content compared to Controls, regardless of diet (p<0.05). Trabecular bone density was lower in Restricted females only (p<0.05). A constant high calcium diet increased cortical BMD in Restricted male and both female groups (p<0.05). Measures of bone geometry indicated that Restricted offspring have narrower bones with preservation of absolute cortical thickness (p<0.05). Importantly, the stress strain index of bone bending strength was lower in male and female Restricted offspring, regardless of diet by up to 9.0% and 7.8%, respectively. DXA results were similar to pQCT results. Being born small, due to uteroplacental insufficiency, programs reduced adult femur length, dimensions and stress strain index. Supplementation with a high calcium diet from adolescence can increase adult cortical bone density in low birth weight males and females, and normal weight females. This increase in bone density was not sufficient to rescue the bone dimension and strength deficits which were programmed in utero, suggesting that the early life environment is critical for bone programming.
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Affiliation(s)
- Tania Romano
- Department of Physiology, The University of Melbourne, Victoria 3010, Australia.
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Romano T, Wark JD, Owens JA, Wlodek ME. Prenatal growth restriction and postnatal growth restriction followed by accelerated growth independently program reduced bone growth and strength. Bone 2009; 45:132-41. [PMID: 19332163 DOI: 10.1016/j.bone.2009.03.661] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [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: 11/07/2008] [Revised: 03/10/2009] [Accepted: 03/12/2009] [Indexed: 12/01/2022]
Abstract
Low birth weight increases the risk of developing adult onset cardiovascular and metabolic diseases. Recently being born small has also been identified as a risk factor for adverse bone growth, development and adult fracture risk. Evidence also suggests that accelerated growth in offspring of normal birth weight, following periods of slowed growth, can also independently program adult diseases. The aim of this study was to determine the relative roles of prenatal and postnatal growth restriction on adult bone characteristics and strength. Bilateral uterine vessel ligation (Restricted) or sham surgery (Control) was performed on gestational day 18 in WKY rats to induce fetal growth restriction. Control, Reduced (reduced Control litter size to match Restricted) and Restricted pups were cross-fostered onto different Control (normal lactation) or Restricted (impaired lactation) mothers 1 day after birth. Femur length, dimensions, strength, mineral content and density were quantified using DXA and pQCT analysis. Markers of bone turnover were measured in offspring at 6 months. Restricted pups were born lighter than Controls with males, not females, remaining smaller than Control-on-Control at 6 months (P<0.05). Pups born of normal weight from a reduced litter suckling on a Restricted mother (Reduced-on-Restricted) grew slowly during lactation then quicker after weaning compared to Controls (P<0.05). Cortical bone mineral content, dimensions and strength were lower in Restricted-on-Restricted and Reduced-on-Restricted offspring compared to Controls with lower density in Reduced-on-Restricted females (P<0.05). The stress strain index of bone bending strength remained lower in the Restricted male offspring when body weight adjustments were made. Cross-fostering Restricted females, but not males, onto mothers with normal lactation (Restricted-on-Control) restored growth and bone parameters to Controls (P<0.05). Being born small, or postnatal growth restriction for normal birth weight offspring followed by accelerated growth, programs bone content and strength deficits. Deficits were corrected by improving postnatal nutrition for females born small, highlighting sex specific programming outcomes and impact of postnatal nutrition. These findings suggest a link between growth restriction and adult bone health with additional studies needed to further explore this link in humans.
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Affiliation(s)
- Tania Romano
- Department of Physiology, The University of Melbourne, Parkville, Victoria, Australia
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31
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Godard CAJ, Wise SS, Kelly RS, Goodale B, Kraus S, Romano T, O'Hara T, Wise JP. Benzo[a]pyrene cytotoxicity in right whale (Eubalaena glacialis) skin, testis and lung cell lines. Mar Environ Res 2006; 62 Suppl:S20-4. [PMID: 16698075 DOI: 10.1016/j.marenvres.2006.04.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The North Atlantic right whale (NARW) is one of the most endangered great whales. The NARW population consists of only about 300 individuals and is reproducing at an insufficient rate. There is growing concern about the potential effects of environmental contaminants on the reproductive and overall health of NARW. High contaminant burdens can accumulate in tissues of great whales but toxicological studies of their effects are limited due to legal, logistical and ethical restrictions and specific in vitro models are critically needed. Cell lines from NARW skin and internal organs were previously created in our laboratory. In this study, skin, testis and lung primary fibroblast cell lines were exposed to benzo[a]pyrene (BP) as part of a multi-chemical toxicity testing project in NARW. Cells were exposed for 24-72 h to 10 nM-10 microM BP dissolved in dimethylsulfoxide. Cytotoxicity was measured with a clonogenic assay using standard methods. Some cytotoxicity was observed after 24 h, the highest concentration (10 microM BP) resulting in 77, 74 and 51 percent relative survival in testis, skin and lung cells, respectively, and indicating a higher cytotoxicity in the lung (p < 0.05). After 48 and 72-h exposure, 10 microM BP resulted in 24 and 3, 74 and 27, and 42 and 23 percent relative survival in testis, skin and lung cells, respectively. Cytotoxicity significantly increased with exposure time in all three tissues (p < 0.05 for skin and p < 0.01 for lung and testis), suggesting metabolic activation of BP in the three organs. Fibroblast cytotoxicity observed in the testis was higher than that observed either in the skin or lung after 48 h (p < 0.01) and was close to 100% after 72 h, warranting further investigation of the potential effects of PAHs on reproductive health.
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Affiliation(s)
- C A J Godard
- Wise Laboratory of Environmental and Genetic Toxicology, University of Southern Maine, Portland, ME 04104, USA
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32
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Connolly J, Romano T, Patruno M. Selections from current literature: effects of dieting and exercise on resting metabolic rate and implications for weight management. Fam Pract 1999; 16:196-201. [PMID: 10381029 DOI: 10.1093/fampra/16.2.196] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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] [Indexed: 11/14/2022] Open
Affiliation(s)
- J Connolly
- Department of Family Medicine, University Hospital and Medical Center, SUNY Stony Brook, New York 11794-8461, USA
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Plopper G, Falk-Marzillier J, Glaser S, Fitchmun M, Giannelli G, Romano T, Jones JC, Quaranta V. Changes in expression of monoclonal antibody epitopes on laminin-5r induced by cell contact. J Cell Sci 1996; 109 ( Pt 7):1965-73. [PMID: 8832419 DOI: 10.1242/jcs.109.7.1965] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Laminin-5r is a basement membrane component that promotes rapid adhesion and hemidesmosome formation in epithelial cells. We raised monoclonal antibodies and identified their corresponding epitopes on the constituent chains of laminin-5r by western blotting. Using a combination of immunoprecipitation and ELISA assays, we determined that these epitopes are differentially exposed on two forms of the laminin-5r heterotrimer: soluble (passively adsorbed onto plastic) and cell-associated. Antibody 5C5 epitope is exposed on the cell-associated form, but not the soluble/passively adsorbed form of laminin-5r. Epitopes reactive with antibodies CM6, FM3, and TR1 are also preferentially exposed on cell-associated laminin-5r, such that reactivity of these antibodies with the cell-associated form is fourfold higher than with the soluble/passively adsorbed form in ELISA assays. Incubation of passively adsorbed laminin-5r with the human epithelial cell line SCC12 induced exposure of 5C5 and CM6, FM3, or TR1 epitopes. These data suggest that cells actively modify laminin-5r, perhaps during matrix assembly, and that the 5C5 epitope may serve as a marker for assembled laminin-5r matrix.
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Affiliation(s)
- G Plopper
- Department of Cell Biology/SBR 12, Scripps Research Institute, La Jolla, CA 92037, USA
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Abstract
A capture assay for the measurement of specific IgE in the serum of allergic patients is described, using monoclonal anti-human IgE (coated to the wells of a microtiter plate) and biotinylated allergens in solution. In a single incubation, IgE is bound to the solid phase through the Fc fragment and biotinylated allergens react with their specific IgE Fab regions, if present. In a second step, streptavidin-HRP conjugate is added to reveal the amount of biotin fixed on the solid phase. Quantitative determinations are obtained by comparison with a standard curve of total IgE incubated with a biotinylated monoclonal anti-IgE, complementary to the one employed as capture antibody. The assay is unaffected by allergen-specific IgG, shows good intra- and interassay reproducibility and is linear over a wide range of specific IgE concentrations. The method could be used with a wide range of different allergens.
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Affiliation(s)
- V Olivieri
- Radim S.p.A., R.&D. Laboratories, (Rome), Italy
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Abstract
Small doses of morphine induce a hyperthermic response that does not change with repeated injections, whereas higher doses induce a hypothermia that changes to hyperthermia with repeated treatment. Experiment 1 confirmed these results in ovariectomized rats, using 6 repeated injections of morphine at 5 or 30 mg/kg. Using the same treatment regimen. Experiment 2 showed that the low dose of morphine induced a transient suppression of LH levels followed by a hypersecretion, and that repeated injections did not affect this response. The high dose (30 mg/kg) of morphine initially induced a sustained suppression of LH. Following the sixth injection of the high dose, subjects showed an intact or exaggerated suppression of LH, but an accelerated recovery to control levels. Experiment 3 extended the phase of repeated treatment of the high dose to 12 days and replicated the results of Experiment 2.
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Affiliation(s)
- R Ganesan
- Department of Pharmacodynamics, University of Florida, Gainesville 32610
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Abstract
The presence of muscle disarray in hypertrophic cardiomyopathy (HC), although well established, has only been semiquantitatively assessed. A quantitative method that uses polarized light microscopy is described. Hematoxylin and eosin-stained sections of ventricular septa from six HC patients and six normal hearts were examined. Cell orientations were measured in five regions from each section using a polarizing microscope with a rotating stage. Histograms of cell orientation angles were plotted and the mean and angular deviation of each sample were calculated. In normal hearts, cells were predominantly aligned parallel to each other. Orientation distributions were sharply peaked, with angular deviations ranging from 4 to 13 degrees. For HC, the sharp peak was lacking and angular deviations varied from 7 to 37 degrees; some distributions were bimodal. Areas in HC septa that appeared normal by gross inspection had abnormal orientation distributions. Polarized light microscopy provides an improved method of detecting and quantifying cellular disorganization in HC.
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Affiliation(s)
- P Whittaker
- Department of Medical Biophysics, University of Western Ontario, Toronto, Canada
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Liao SK, Meranda C, Avner BP, Romano T, Husseini S, Kimbro B, Oldham RK. Immunohistochemical phenotyping of human solid tumors with monoclonal antibodies in devising biotherapeutic strategies. Cancer Immunol Immunother 1989; 28:77-86. [PMID: 2645052 PMCID: PMC11037965 DOI: 10.1007/bf00199106] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/1988] [Accepted: 08/03/1988] [Indexed: 01/01/2023]
Abstract
A panel of 14 monoclonal antibodies (MoAbs) (4 raised against breast cancer, 6 against colon cancer and 4 against melanoma) were used to phenotype frozen sections of tumor biopsies obtained from 110 patients, by avidin-biotin-peroxidase complex techniques. We observed heterogeneity of antigen expression among the multiple metastatic lesions of single patients, as well as among tumor lesions from different patients with similar tumor histotypes. A wide range of cross-reactivity of anti-(breast-carcinoma) and anti-(colon-carcinoma) MoAbs with other carcinoma histotypes and limited reactivity with melanoma and sarcoma was detected. Some of our anti-melanoma MoAbs were also found to cross-react with selected carcinomas. Nine of the 14 MoAbs most reactive with carcinomas of diverse histotypes have been identified. A mixture or 'cocktail' of different MoAbs could be selected for each individual patient in order to achieve binding of MoAbs with most, if not 100% of tumor cells. This study illustrates the approach that we have taken to individualize the cocktail of MoAbs for the development of patient-specific therapeutic immunoconjugates.
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Affiliation(s)
- S K Liao
- Biotherapeutics, Inc., Franklin, TN 37064
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Cacciapuoti G, Porcelli M, Gambacorta A, Romano T, De Rosa M. S-adenosylmethionine decarboxylase from the thermophilic archaebacterium Sulfolobus solfataricus. Adv Exp Med Biol 1988; 250:91-100. [PMID: 3151235 DOI: 10.1007/978-1-4684-5637-0_9] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- G Cacciapuoti
- Department of Biochemistry, University of Naples First Medical School, Italy
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40
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Abstract
Delayed hypersensitivity (DH) can be transferred in FP and SC chickens with 1 x 10(8) spleen or peripheral blood cells from donors exhibiting moderate to strong DH reactions. Increasing the spleen cells dose from 1 to 4 x 10(8) per recipient had no marked enhancing effect on the results. Spleen cells from agammaglobulinemic donors were also shown to transfer DH reactions.
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Romano T. The nurse as an EMS consultant. J Emerg Nurs 1980; 6:41-2. [PMID: 7001107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Lerer S, Romano T, Denmark L. Gallium-67-citrate scanning in tuberculous peritonitis. Am J Gastroenterol 1979; 71:264-8. [PMID: 443228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A 32-year old black, alcoholic male was noted to have an abnormal Gallium-67-citrate scan during a work-up for persistent fever. Surgical biopsies revealed findings of the dry form of tuberculosis peritonitis. The literature concerning Gallium-67-citrate scanning was reviewed and its usefulness in inflammatory disease states (including two reports of positive scans in tuberculous peritonitis) was demonstrated. In addition, we have considered the possible mechanisms of Gallium-67-citrate uptake by inflammatory cells and its probable relationship to the granulomas associated with tuberculous peritonitis. We conclude that Gallium-67-citrate scanning is an important diagnostic procedure in the evaluation of a fever of unknown origin. Moreover, it may significantly shorten the diagnostic work-up of those cases of tuberculous peritonitis.
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Romano T. Trauma notebook 13: Stress ulcer - stress ulcer as a complication of major trauma. J Emerg Nurs 1978; 4:57. [PMID: 364142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Romano T. Trauma notebook 14: Hemorrhagic shock - compensatory hormonal mechanisms in hemorrhagic shock. J Emerg Nurs 1978; 4:58. [PMID: 364143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Romano T. Hypothermia blankets and pads. J Emerg Nurs 1978; 4:45-6. [PMID: 355696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Barber J, Romano T. Trauma notebook. Oxygen. J Emerg Nurs 1978; 4:53-4. [PMID: 351256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Budassi SA, Romano T. Trauma Notebook No. 9. Cardioversion: synchronous electrical countershock. J Emerg Nurs 1978; 4:29-30. [PMID: 344963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Romano T. Emergency nurse education: the emergency physician. JACEP 1978; 7:27-8. [PMID: 619169 DOI: 10.1016/s0361-1124(78)80255-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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49
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Walraven G, Romano T. Anti-shock trousers. J Emerg Nurs 1977; 3:31. [PMID: 342785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Romano T, Cayten CG, Eisenberg S, Lepper R, Fernandez-Caballero C. A nationwide paramedic clearinghouse. Emerg Med Serv 1977; 6:41-2. [PMID: 10236317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/13/2023]
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