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Kabbani N, Stepan H, Blüher M, Ebert T, Baber R, Vogel M, Kiess W, Stumvoll M, Breitfeld J, Lössner U, Tönjes A, Schrey-Petersen S. Association between TGFβ1 Levels in Cord Blood and Weight Progress in the First Year of Life. Biomedicines 2023; 11:2220. [PMID: 37626717 PMCID: PMC10452394 DOI: 10.3390/biomedicines11082220] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/01/2023] [Accepted: 08/02/2023] [Indexed: 08/27/2023] Open
Abstract
Transforming growth factor beta-1 (TGFβ1) is an adipokine secreted from adipose tissue, placental tissue and immune cells with a role in cell proliferation, cell apoptosis and angiogenic proliferation. The role of TGFβ1 in pregnancy and child growth and the source of cord TGFβ1 are yet unknown. In this study, we sought to clarify the correlation of TGFβ1 levels with parameters of intrauterine growth and child growth during the first year of life, and to determine whether their source is primarily of fetal or maternal origin. Serum samples and anthropometric measurements were obtained from the LIFE Child cohort of 79 healthy mother-child pairs. Measurements were conducted using enzyme-linked immunosorbent assays. Statistical analyses including Mann-Whitney U-test, correlation analyses and linear regression analyses were performed using GraphPad Prism and R. TGFβ1 levels were significantly higher in cord than in maternal serum, suggesting a fetal origin. Multivariate regression analyses revealed strong positive associations between cord TGFβ1 levels at birth and child weight at U6. Furthermore, cord TGFβ1 was significantly correlated with child weight at approximately one year of age. An increase of 10,000 pg/mL in cord TGFβ1 concentrations at birth was associated with a higher body weight of 201 g at roughly one year of age when adjusted for sex.
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Affiliation(s)
- Noura Kabbani
- Department of Obstetrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Holger Stepan
- Department of Obstetrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Matthias Blüher
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München, The University of Leipzig and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Thomas Ebert
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Ronny Baber
- Institute of Laboratory Medicine, Clinical Chemistry and Molecular Diagnostics, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Leipzig Medical Biobank, University of Leipzig, 04103 Leipzig, Germany
| | - Mandy Vogel
- LIFE Child, Hospital for Children and Adolescents, Department of Pediatrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Center for Pediatric Research (CPL), Hospital for Children and Adolescents, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Wieland Kiess
- LIFE Child, Hospital for Children and Adolescents, Department of Pediatrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Center for Pediatric Research (CPL), Hospital for Children and Adolescents, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Michael Stumvoll
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Jana Breitfeld
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Ulrike Lössner
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Anke Tönjes
- Medical Department III—Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
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Kabbani N, Blüher M, Stepan H, Stumvoll M, Ebert T, Tönjes A, Schrey-Petersen S. Adipokines in Pregnancy: A Systematic Review of Clinical Data. Biomedicines 2023; 11:biomedicines11051419. [PMID: 37239090 DOI: 10.3390/biomedicines11051419] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 03/31/2023] [Revised: 04/29/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Adipokines are signaling proteins involved in metabolic, endocrinological, vascular and immunogenic processes. Associations of various adipokines with not only insulin resistance but also with increased insulin sensitivity, increased systolic blood pressure, and atherosclerosis highlight the significance of adipokines in several components of metabolic syndrome and metabolic diseases in general. As pregnancy presents a unique metabolic state, the role of adipokines in pregnancy, and even in various pregnancy complications, appears to be key to elucidating these metabolic processes. Many studies in recent years have attempted to clarify the role of adipokines in pregnancy and gestational pathologies. In this review, we aim to investigate the changes in maternal adipokine levels in physiological gestation, as well as the association of adipokines with pregnancy pathologies, such as gestational diabetes mellitus (GDM) and preeclampsia (PE). Furthermore, we will analyze the association of adipokines in both maternal serum and cord blood with parameters of intrauterine growth and various pregnancy outcomes.
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Affiliation(s)
- Noura Kabbani
- Department of Obstetrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Matthias Blüher
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München, The University of Leipzig and University Hospital Leipzig, 04103 Leipzig, Germany
| | - Holger Stepan
- Department of Obstetrics, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Michael Stumvoll
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Thomas Ebert
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Anke Tönjes
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig Medical Center, 04103 Leipzig, Germany
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Kabbani N, Olds J. Response to Comments on “Does COVID19 Infect the Brain? If So, Smokers Might Be at a Higher Risk”. Mol Pharmacol 2020; 98:384-385. [DOI: 10.1124/molpharm.120.000120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Bak E, Jedrzejewska-Szmek J, King J, Blackwell K, Kabbani N. Regulation of Axon Growth by Alpha 7 Nicotinic Receptor Calcium Transients at the Growth Cone. Biophys J 2017. [DOI: 10.1016/j.bpj.2016.11.2912] [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: 11/28/2022] Open
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Nurulain S, Prytkova T, Sultan AM, Ievglevskyi O, Lorke D, Yang KHS, Petroianu G, Howarth FC, Kabbani N, Oz M. Inhibitory actions of bisabolol on α7-nicotinic acetylcholine receptors. Neuroscience 2015; 306:91-9. [PMID: 26283025 DOI: 10.1016/j.neuroscience.2015.08.019] [Citation(s) in RCA: 11] [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: 01/18/2015] [Revised: 08/07/2015] [Accepted: 08/10/2015] [Indexed: 12/20/2022]
Abstract
Bisabolol is a plant-derived monocyclic sesquiterpene alcohol with antinociceptive and antiinflammatory actions. However, molecular targets mediating these effects of bisabolol are poorly understood. In this study, using a two-electrode voltage-clamp and patch-clamp techniques and live cellular calcium imaging, we have investigated the effect of bisabolol on the function of human α7 subunit of nicotinic acetylcholine receptor (nAChR) in Xenopus oocytes, interneurons of rat hippocampal slices. We have found that bisabolol reversibly and concentration dependently (IC50 = 3.1 μM) inhibits acetylcholine (ACh)-induced α7 receptor-mediated currents. The effect of bisabolol was not dependent on the membrane potential. Bisabolol inhibition was not changed by intracellular injection of the Ca(2+) chelator BAPTA and perfusion with Ca(2+)-free solution containing Ba(2+), suggesting that endogenous Ca(2+)-dependent Cl(-) channels are not involved in bisabolol actions. Increasing the concentrations of ACh did not reverse bisabolol inhibition. Furthermore, the specific binding of [(125)I] α-bungarotoxin was not attenuated by bisabolol. Choline-induced currents in CA1 interneurons of rat hippocampal slices were also inhibited with IC50 of 4.6 μM. Collectively, our results suggest that bisabolol directly inhibits α7-nAChRs via a binding site on the receptor channel.
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Affiliation(s)
- S Nurulain
- Laboratory of Functional Lipidomics, Department of Pharmacology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - T Prytkova
- Department of Biological Sciences, Schmid College of Science and Technology, Chapman University, One University Drive, Orange, CA 92866, USA
| | - A M Sultan
- Laboratory of Functional Lipidomics, Department of Pharmacology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - O Ievglevskyi
- Laboratory of Functional Lipidomics, Department of Pharmacology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - D Lorke
- Department of Cellular Biology & Pharmacology, College of Medicine, Florida International University, Miami, FL 33199, USA
| | - K-H S Yang
- Laboratory of Functional Lipidomics, Department of Physiology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - G Petroianu
- Department of Cellular Biology & Pharmacology, College of Medicine, Florida International University, Miami, FL 33199, USA
| | - F C Howarth
- Laboratory of Functional Lipidomics, Department of Physiology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates
| | - N Kabbani
- Department of Molecular Neuroscience, Krasnow Institute for Advanced Study, George Mason University, 4400 University Drive, Fairfax, VA 22030, USA
| | - M Oz
- Laboratory of Functional Lipidomics, Department of Pharmacology, College of Medicine and Health Sciences, UAE University, Al Ain, United Arab Emirates.
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Lin R, Karpa K, Kabbani N, Goldman-Rakic P, Levenson R. Dopamine D2 and D3 receptors are linked to the actin cytoskeleton via interaction with filamin A. Proc Natl Acad Sci U S A 2001; 98:5258-63. [PMID: 11320256 PMCID: PMC33197 DOI: 10.1073/pnas.011538198] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.3] [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: 12/28/2022] Open
Abstract
We have used a yeast two-hybrid approach to uncover protein interactions involving the D2-like subfamily of dopamine receptors. Using the third intracellular loop of the D2S and D3 dopamine receptors as bait to screen a human brain cDNA library, we identified filamin A (FLN-A) as a protein that interacts with both the D2 and D3 subtypes. The interaction with FLN-A was specific for the D2 and D3 receptors and was independently confirmed in pull-down and coimmunoprecipitation experiments. Deletion mapping localized the dopamine receptor-FLN-A interaction to the N-terminal segment of the D2 and D3 dopamine receptors and to repeat 19 of FLN-A. In cultures of dissociated rat striatum, FLN-A and D2 receptors colocalized throughout neuronal somata and processes as well as in astrocytes. Expression of D2 dopamine receptors in FLN-A-deficient M2 melanoma cells resulted in predominant intracellular localization of the D2 receptors, whereas in FLN-A-reconstituted cells, the D2 receptor was predominantly localized at the plasma membrane. These results suggest that FLN-A may be required for proper cell surface expression of the D2 dopamine receptors. Association of D2 and D3 dopamine receptors with FLN-A provides a mechanism whereby specific dopamine receptor subtypes may be functionally linked to downstream signaling components via the actin cytoskeleton.
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Affiliation(s)
- R Lin
- Neuroscience Graduate Program, Department of Pharmacology, Penn State College of Medicine, Hershey, PA 17033, USA
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Karpa KD, Lin R, Kabbani N, Levenson R. The dopamine D3 receptor interacts with itself and the truncated D3 splice variant d3nf: D3-D3nf interaction causes mislocalization of D3 receptors. Mol Pharmacol 2000; 58:677-83. [PMID: 10999936 DOI: 10.1124/mol.58.4.677] [Citation(s) in RCA: 111] [Impact Index Per Article: 4.6] [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: 11/22/2022] Open
Abstract
We have generated a stable cell line expressing FLAG epitope-tagged D3 dopamine receptors and used this cell line to study D3 receptor-protein interactions. To analyze protein interactions, we separately introduced into the stable cell line either D3 receptors carrying an hemagglutinin (HA) epitope tag, or an HA-tagged version of the D3 receptor splice variant D3nf. A combination of confocal laser microscopy and coimmunoprecipitation was used to assay the formation and expression pattern of D3-D3 homodimers or D3-D3nf heterodimers. When coexpressed in HEK 293 cells, FLAG- and HA-tagged D3 receptors exhibited a similar plasma membrane distribution. Using an HA epitope tag-specific antibody, we coimmunoprecipitated HA- and FLAG-tagged D3 receptors, suggesting that D3 receptors are capable of forming homodimers. Epitope-tagged D3nf polypeptides exhibited a markedly different cellular distribution than D3 receptors. When expressed in HEK 293 cells, either alone or in combination with FLAG-tagged D3 receptors, D3nf exhibited a punctate perinuclear distribution. When D3nf was introduced into the stable D3-expressing cell line, D3 receptors were no longer visualized at the plasma membrane. Instead, D3 and D3nf showed a similar, predominantly cytosolic, localization. Using the HA-specific antibody, we were able to coimmunoprecipitate D3 and D3nf polypeptides from transfected cells. These data suggest the existence of physical interaction between D3 and D3nf. This interaction appears to result in the mislocalization of D3 receptors from the plasma membrane to an intracellular compartment, a finding that could be of significance in the etiology of schizophrenia.
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Affiliation(s)
- K D Karpa
- Department of Pharmacology, Penn State College of Medicine, Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033, USA
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Studer L, Csete M, Lee SH, Kabbani N, Walikonis J, Wold B, McKay R. Enhanced proliferation, survival, and dopaminergic differentiation of CNS precursors in lowered oxygen. J Neurosci 2000; 20:7377-83. [PMID: 11007896 PMCID: PMC6772777] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
Standard cell culture systems impose environmental oxygen (O(2)) levels of 20%, whereas actual tissue O(2) levels in both developing and adult brain are an order of magnitude lower. To address whether proliferation and differentiation of CNS precursors in vitro are influenced by the O(2) environment, we analyzed embryonic day 12 rat mesencephalic precursor cells in traditional cultures with 20% O(2) and in lowered O(2) (3 +/- 2%). Proliferation was promoted and apoptosis was reduced when cells were grown in lowered O(2), yielding greater numbers of precursors. The differentiation of precursor cells into neurons with specific neurotransmitter phenotypes was also significantly altered. The percentage of neurons of dopaminergic phenotype increased to 56% in lowered O(2) compared with 18% in 20% O(2). Together, the increases in total cell number and percentage of dopaminergic neurons resulted in a ninefold net increase in dopamine neuron yield. Differential gene expression analysis revealed more abundant messages for FGF8, engrailed-1, and erythropoietin in lowered O(2). Erythropoietin supplementation of 20% O(2) cultures partially mimicked increased dopaminergic differentiation characteristic of CNS precursors cultured in lowered O(2). These data demonstrate increased proliferation, reduced cell death, and enhanced dopamine neuron generation in lowered O(2), making this method an important advance in the ex vivo generation of specific neurons for brain repair.
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Affiliation(s)
- L Studer
- Laboratory of Molecular Biology, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland 20892, USA
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