1
|
Ayalasomayajula Y, Hesaraghatta A, Dantuluri N, Yassine J, Saleem F, Mansour H, Chayawatto C, Rangarajan N, Rangarajan S, Krishnan S, Panguluri SK. Influence of age and sex on physical, cardiac electrical and functional alterations in progressive hyperoxia treatment: A time course study in a murine model. Exp Gerontol 2024; 191:112435. [PMID: 38636569 DOI: 10.1016/j.exger.2024.112435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/29/2024] [Accepted: 04/15/2024] [Indexed: 04/20/2024]
Abstract
Oxygen supplementation is a widely used treatment for ICU patients. However, it can lead to hyperoxia, which in turn can result in oxidative stress, cardiac remodeling, and even mortality. This paper expands upon previous research conducted by our lab to establish time-dependent cardiac changes under hyperoxia. In this study, both young and aged mice (male and female) underwent 72 h of hyperoxia exposure and were monitored at 24-hour intervals for cardiac electrophysiological and functional parameters using ECG and electrocardiogram data. Our analysis showed that young male mice experienced significant weight loss as well as significant lung edema by 48 h. Although young male mice were highly susceptible to physical changes, they were resistant to early cardiac functional and electrophysiological changes compared to the other groups. Both young and aged female and aged males developed functional impairments by 24 h of hyperoxia exposure. Furthermore, sex and age differences were noted in the onset of electrophysiological changes. While some groups could resist early cardiac remodeling, our data suggests that 72 h of hyperoxia exposure is sufficient to induce significant cardiac remodeling across all age and sex groups. Our data establishes that time-dependent cardiac changes due to oxygen supplementation can have devastating consequences even with short exposure periods. These findings can aid in developing clinical practices for individuals admitted to the ICU by elucidating the impact of aging, sex, and length of stay under mechanical ventilation to limit hyperoxia-induced cardiac remodeling.
Collapse
Affiliation(s)
- Yashwant Ayalasomayajula
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Anagha Hesaraghatta
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Neha Dantuluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Jenna Yassine
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Faizan Saleem
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Hussein Mansour
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Chayapatou Chayawatto
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Nishank Rangarajan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Sashank Rangarajan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Smrithi Krishnan
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA
| | - Siva Kumar Panguluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA; Cell Biology, Microbiology and Molecular Biology, College of Arts and Sciences, University of South Florida, 12901 Bruce B. Downs Blvd., Tampa, FL 33612, USA.
| |
Collapse
|
2
|
Hammond JD, Kielt MJ, Conroy S, Lingappan K, Austin ED, Eldredge LC, Truog WE, Abman SH, Nelin LD, Guaman MC. Exploring the Association of Male Sex With Adverse Outcomes in Severe Bronchopulmonary Dysplasia: A Retrospective, Multicenter Cohort Study. Chest 2024; 165:610-620. [PMID: 37879559 DOI: 10.1016/j.chest.2023.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 09/12/2023] [Accepted: 10/05/2023] [Indexed: 10/27/2023] Open
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a significant contributor to morbidity and death in infants who are born premature. Male sex is an independent risk factor for the development of BPD. However, whether male sex is associated with adverse outcomes that occur after formal diagnosis of severe BPD prior to hospital discharge remains unclear. RESEARCH QUESTION Is male sex associated with a higher risk of adverse outcomes in infants with established severe BPD? STUDY DESIGN AND METHODS A retrospective, multicenter cohort study of infants enrolled in the BPD Collaborative Registry from January 1, 2015, to June 29, 2022, was performed. Demographics, clinical characteristics, and outcomes were stratified by sex (ie, male vs female). Regression modeling was used to estimate the association of sex with the primary composite outcome of death or tracheostomy at hospital discharge. RESULTS We identified 1,156 infants with severe BPD, defined at 36 weeks postmenstrual age by the National Institutes of Health 2001 consensus definition. The cohort was predominantly male (59% male infants, 41% female infants). However, rates of mechanical ventilation at 36 weeks postmenstrual age (ie, type 2 severe BPD) did not differ by sex. Overall mortality rates within the cohort were low (male infants, 5.3%; female infants, 3.6%). The OR of death or tracheostomy for male-to-female infants was 1.0 (95% CI, 0.7-1.5). INTERPRETATION Our results lead us to speculate that, although sex is an important variable that contributes to the development and pathogenesis of severe BPD, it does not appear to be associated with adverse outcomes in this cohort of infants with established disease. The surprising results raise important questions surrounding the temporal role of biological sex in the development of severe BPD and its progression during the neonatal ICU stay. As we explore the phenotypes and endotypes of BPD, it is imperative to consider how sex modulates the disease from birth through hospital discharge.
Collapse
Affiliation(s)
| | | | - Sara Conroy
- Nationwide Children's Hospital, Columbus, OH
| | | | | | | | | | | | | | | |
Collapse
|
3
|
Mahoney KJ, Bowie JS, Ford AE, Perera N, Sekiguchi Y, Fothergill DM, Lee EC. Plasma Proteomics-Based Discovery of Mechanistic Biomarkers of Hyperbaric Stress and Pulmonary Oxygen Toxicity. Metabolites 2023; 13:970. [PMID: 37755249 PMCID: PMC10534745 DOI: 10.3390/metabo13090970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/31/2023] [Accepted: 08/01/2023] [Indexed: 09/28/2023] Open
Abstract
Our aim was to identify proteins that reflect an acute systemic response to prolonged hyperbaric stress and discover potential biomarker pathways for pulmonary O2 toxicity. The study was a double-blind, randomized, crossover design in trained male Navy diver subjects. Each subject completed two dry resting hyperbaric chamber dives separated by a minimum of one week. One dive exposed the subject to 6.5 h of 100% oxygen (O2) at 2ATA. The alternate dive exposed the subjects to an enhanced air nitrox mixture (EAN) containing 30.6% O2 at the same depth for the same duration. Venous blood samples collected before (PRE) and after (POST) each dive were prepared and submitted to LC-MS/MS analysis (2 h runs). A total of 346 total proteins were detected and analyzed. A total of 12 proteins were significantly increased at EANPOST (vs. EANPRE), including proteins in hemostasis and immune signaling and activation. Significantly increased proteins at O2PRE (vs. O2POST) included neural cell adhesion molecule 1, glycoprotein Ib, catalase, hemoglobin subunit beta, fibulin-like proteins, and complement proteins. EANPOST and O2POST differed in biomarkers related to coagulation, immune signaling and activation, and metabolism. Of particular interest is (EANPOST vs. O2POST), which is protective against oxidative stress.
Collapse
Affiliation(s)
- Kyle J. Mahoney
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| | - Jacob S. Bowie
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| | - Austin E. Ford
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| | - Neranjan Perera
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| | - Yasuki Sekiguchi
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| | | | - Elaine C. Lee
- Department of Kinesiology, University of Connecticut, Storrs, CT 06269, USA; (K.J.M.); (J.S.B.); (N.P.)
| |
Collapse
|
4
|
Chatterjee T, Lewis TL, Arora I, Gryshyna AE, Underwood L, Masjoan Juncos JX, Aggarwal S. Sex-Based Disparities in Leukocyte Migration and Activation in Response to Inhalation Lung Injury: Role of SDF-1/CXCR4 Signaling. Cells 2023; 12:1719. [PMID: 37443753 PMCID: PMC10340292 DOI: 10.3390/cells12131719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 06/21/2023] [Accepted: 06/24/2023] [Indexed: 07/15/2023] Open
Abstract
The aim of the study was to determine whether sex-related differences exist in immune response to inhalation lung injury. C57BL/6 mice were exposed to Cl2 gas (500 ppm for 15, 20, or 30 min). Results showed that male mice have higher rates of mortality and lung injury than females. The binding of the chemokine ligand C-X-C motif chemokine 12 (CXCL12), also called stromal-derived-factor-1 (SDF-1), to the C-X-C chemokine receptor type 4 (CXCR4) on lung cells promotes the migration of leukocytes from circulation to lungs. Therefore, the hypothesis was that elevated SDF-1/CXCR4 signaling mediates exaggerated immune response in males. Plasma, blood leukocytes, and lung cells were collected from mice post-Cl2 exposure. Plasma levels of SDF-1 and peripheral levels of CXCR4 in lung cells were higher in male vs. female mice post-Cl2 exposure. Myeloperoxidase (MPO) and elastase activity was significantly increased in leukocytes of male mice exposed to Cl2. Lung cells were then ex vivo treated with SDF-1 (100 ng/mL) in the presence or absence of the CXCR4 inhibitor, AMD3100 (100 nM). SDF-1 significantly increased migration, MPO, and elastase activity in cells obtained from male vs. female mice post-Cl2 exposure. AMD3100 attenuated these effects, suggesting that differential SDF-1/CXCR4 signaling may be responsible for sex-based disparities in the immune response to inhalation lung injury.
Collapse
Affiliation(s)
| | | | | | | | | | | | - Saurabh Aggarwal
- Division of Molecular and Translational Biomedicine, Department of Anesthesiology and Perioperative Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, AL 35205-3703, USA; (T.C.); (T.L.L.); (I.A.); (A.E.G.); (L.U.); (J.X.M.J.)
| |
Collapse
|
5
|
Yao H, Wallace J, Peterson AL, Scaffa A, Rizal S, Hegarty K, Maeda H, Chang JL, Oulhen N, Kreiling JA, Huntington KE, De Paepe ME, Barbosa G, Dennery PA. Timing and cell specificity of senescence drives postnatal lung development and injury. Nat Commun 2023; 14:273. [PMID: 36650158 PMCID: PMC9845377 DOI: 10.1038/s41467-023-35985-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
Senescence causes age-related diseases and stress-related injury. Paradoxically, it is also essential for organismal development. Whether senescence contributes to lung development or injury in early life remains unclear. Here, we show that lung senescence occurred at birth and decreased throughout the saccular stage in mice. Reducing senescent cells at this stage disrupted lung development. In mice (<12 h old) exposed to hyperoxia during the saccular stage followed by air recovery until adulthood, lung senescence increased particularly in type II cells and secondary crest myofibroblasts. This peaked during the alveolar stage and was mediated by the p53/p21 pathway. Decreasing senescent cells during the alveolar stage attenuated hyperoxia-induced alveolar and vascular simplification. Conclusively, early programmed senescence orchestrates postnatal lung development whereas later hyperoxia-induced senescence causes lung injury through different mechanisms. This defines the ontogeny of lung senescence and provides an optimal therapeutic window for mitigating neonatal hyperoxic lung injury by inhibiting senescence.
Collapse
Affiliation(s)
- Hongwei Yao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA.
| | - Joselynn Wallace
- Center for Computational Biology of Human Disease and Center for Computation and Visualization, Brown University, Providence, RI, 02912, USA
| | - Abigail L Peterson
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Alejandro Scaffa
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Salu Rizal
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Katy Hegarty
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Hajime Maeda
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Jason L Chang
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Nathalie Oulhen
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Jill A Kreiling
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Kelsey E Huntington
- Department of Pathology and Laboratory Medicine, Warren Alpert Medical School, Brown University, Providence, RI, 02903, USA
| | - Monique E De Paepe
- Department of Pathology, Women and Infants Hospital, Providence, RI, 02905, USA
| | - Guilherme Barbosa
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA
| | - Phyllis A Dennery
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, RI, 02912, USA.
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, RI, 02903, USA.
| |
Collapse
|
6
|
Gerges SH, El-Kadi AOS. Sexual Dimorphism in the Expression of Cytochrome P450 Enzymes in Rat Heart, Liver, Kidney, Lung, Brain, and Small Intestine. Drug Metab Dispos 2023; 51:81-94. [PMID: 36116791 DOI: 10.1124/dmd.122.000915] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/26/2022] [Accepted: 07/28/2022] [Indexed: 12/30/2022] Open
Abstract
Cytochrome P450 (P450) enzymes are monooxygenases that are expressed hepatically and extrahepatically and play an essential role in xenobiotic metabolism. Substantial scientific evidence indicates sex-specific differences between males and females in disease patterns and drug responses, which could be attributed, even partly, to differences in the expression and/or activity levels of P450 enzymes in different organs. In this study, we compared the mRNA and protein expression of P450 enzymes in different organs of male and female Sprague-Dawley rats by real-time polymerase chain reaction and western blot techniques. We found significant sex- and organ-specific differences in several enzymes. Hepatic Cyp2c11, Cyp2c13, and Cyp4a2 showed male-specific expression, whereas Cyp2c12 showed female-specific expression. Cyp2e1 and Cyp4f enzymes demonstrated higher expression in the female heart and kidneys compared with males; however, they showed no significant sexual dimorphism in the liver. Male rats showed higher hepatic and renal Cyp1b1 levels. All assessed enzymes were found in the liver, but some were not expressed in other organs. At the protein expression level, CYP1A2, CYP3A, and CYP4A1 demonstrated higher expression levels in the females in several organs, including the liver. Elucidating sex-specific differences in P450 enzyme levels could help better understand differences in disease pathogeneses and drug responses between males and females and thus improve treatment strategies. SIGNIFICANCE STATEMENT: This study characterized the differences in the mRNA and protein expression levels of different cytochrome P450 (P450) enzymes between male and female rats in the heart, liver, lung, kidney, brain, and small intestine. It demonstrated unique sex-specific differences in the different organs. This study is considered a big step towards elucidating sex-specific differences in P450 enzyme levels, which is largely important for achieving a better understanding of the differences between males and females in the disease's processes and treatment outcomes.
Collapse
Affiliation(s)
- Samar H Gerges
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| | - Ayman O S El-Kadi
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, Alberta, Canada
| |
Collapse
|
7
|
Transcriptomic-Metabolomic Profiling in Mouse Lung Tissues Reveals Sex- and Strain-Based Differences. Metabolites 2022; 12:metabo12100932. [PMID: 36295835 PMCID: PMC9612261 DOI: 10.3390/metabo12100932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 09/26/2022] [Accepted: 09/27/2022] [Indexed: 01/24/2023] Open
Abstract
Omics analyses are commonly used for identifying pathways and genes responsible for physiologic and pathologic processes. Though sex is considered a biological variable in rigorous assessments of pulmonary responses to oxidant exposures, the contribution of the murine strain is largely ignored. This study utilized an unbiased integrated assessment of high-resolution metabolomic profiling and RNA-sequencing to explore sex- and strain-dependent pathways in adult mouse lungs. The results indicated that strain exhibited a greater influence than sex on pathways associated with inflammatory and oxidant/antioxidant responses and that interaction metabolites more closely resembled those identified as differentially expressed by strain. Metabolite analyses revealed that the components of the glutathione antioxidant pathway were different between strains, specifically in the formation of mixed disulfides. Additionally, selenium metabolites such as selenohomocystiene and selenocystathionine were similarly differentially expressed. Transcriptomic analysis revealed similar findings, as evidenced by differences in glutathione peroxidase, peroxiredoxin, and the inflammatory transcription factors RelA and Jun. In summary, an multi-omics integrated approach identified that murine strain disproportionately impacts baseline expression of antioxidant systems in lung tissues. We speculate that strain-dependent differences contribute to discrepant pulmonary responses in preclincal mouse models, with deleterious effects on clinical translation.
Collapse
|
8
|
Li W, Ding Z, Chen Y, Wang Y, Peng M, Li C, Zhang H, Zhong R, Xia T, Zhong L, Zhao M, Yang M, Yue Y, Liang L, Cao X, Shu Z. Integrated Pharmacology Reveals the Molecular Mechanism of Gegen Qinlian Decoction Against Lipopolysaccharide-induced Acute Lung Injury. Front Pharmacol 2022; 13:854544. [PMID: 35645794 PMCID: PMC9136983 DOI: 10.3389/fphar.2022.854544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 04/29/2022] [Indexed: 11/13/2022] Open
Abstract
ALI is a severe inflammatory disease of the lungs. In previous studies, we found that GQD was effective against ALI, but specific molecular mechanism is still unclear. Therefore, this study was to examine effect of GQD on LPS-induced ALI rats and underlying mechanisms using multi-omics and molecular methods. The results showed that GQD significantly improved lung tissue damage, reduced pulmonary edema, inhibited MPO activity, and improved respiratory function in ALI rat. Additionally, GQD significantly reduced the levels of TNF-α, IL-1β, and IL-6 in serum and BALF. Furthermore, metabolomic analysis showed that GQD reduced pulmonary inflammation by improving metabolic remodeling. Moreover, transcriptomic analysis showed that GQD inhibited the activation of complement pathway and regulated Th17 and Treg cells balance. Additionally, GQD inhibited the expression of C3, C5a, and IL-17, and promoted the expression of TGF-β and CYP1A1 at the mRNA and protein levels. Gut microbial assay showed that GQD treatment increased the relative abundance of Firmicutes and their genera in intestinal microbiota, and increased short-chain fatty acids concentration. Overall, GQD treated ALI by improving metabolic remodeling, affecting immune-related pathways and regulating intestinal microbiota. This study provides a solid scientific basis for promoting the clinical use of GQD in treating ALI.
Collapse
Affiliation(s)
- Wei Li
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zihe Ding
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Ying Chen
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yi Wang
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mingming Peng
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Chuanqiu Li
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Han Zhang
- School of Pharmacy, Jiamusi University, Jiamusi, China
| | - Renxing Zhong
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Tianyi Xia
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Luyang Zhong
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mantong Zhao
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mengru Yang
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yimin Yue
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lanyuan Liang
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xia Cao
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zunpeng Shu
- The College of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China
- *Correspondence: Zunpeng Shu,
| |
Collapse
|
9
|
The implications of hyperoxia, type 1 diabetes and sex on cardiovascular physiology in mice. Sci Rep 2021; 11:23086. [PMID: 34845324 PMCID: PMC8630164 DOI: 10.1038/s41598-021-02550-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 11/10/2021] [Indexed: 01/09/2023] Open
Abstract
Oxygen supplementation, although a cornerstone of emergency and cardiovascular medicine, often results in hyperoxia, a condition characterized by excessive tissue oxygen which results in adverse cardiac remodeling and subsequent injurious effects to physiological function. Cardiac remodeling is further influenced by various risk factors, including pre-existing conditions and sex. Thus, the purpose of this experiment was to investigate cardiac remodeling in Type I Diabetic (Akita) mice subjected to hyperoxic treatment. Overall, we demonstrated that Akita mice experience distinct challenges from wild type (WT) mice. Specifically, Akita males at both normoxia and hyperoxia showed significant decreases in body and heart weights, prolonged PR, QRS, and QTc intervals, and reduced %EF and %FS at normoxia compared to WT controls. Moreover, Akita males largely resemble female mice (both WT and Akita) with regards to the parameters studied. Finally, statistical analysis revealed hyperoxia to have the greatest influence on cardiac pathophysiology, followed by sex, and finally genotype. Taken together, our data suggest that Type I diabetic patients may have distinct cardiac pathophysiology under hyperoxia compared to uncomplicated patients, with males being at high risk. These findings can be used to enhance provision of care in ICU patients with Type I diabetes as a comorbid condition.
Collapse
|
10
|
Dahl MJ, Veneroni C, Lavizzari A, Bowen S, Emerson H, Rebentisch A, Dawson E, Summers K, Pettet L, Wang Z, Null DM, Yoder BA, Dellacà RL, Albertine KH. Early extubation to noninvasive respiratory support of former preterm lambs improves long-term respiratory outcomes. Am J Physiol Lung Cell Mol Physiol 2021; 321:L248-L262. [PMID: 34009031 DOI: 10.1152/ajplung.00051.2021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Invasive mechanical ventilation (IMV) and exposure to oxygen-rich gas during early postnatal life are contributing factors for long-term pulmonary morbidities faced by survivors of preterm birth and bronchopulmonary dysplasia. The duration of IMV that leads to long-term pulmonary morbidities is unknown. We compared two durations of IMV (3 h vs. 6 days) during the first 6-7 days of postnatal life in preterm lambs to test the hypothesis that minimizing the duration of IMV will improve long-term respiratory system mechanics and structural outcomes later in life. Moderately preterm (∼85% gestation) lambs were supported by IMV for either 3 h or 6 days before weaning from all respiratory support to become former preterm lambs. Respiratory system mechanics and airway reactivity were assessed monthly from 1 to 6 mo of chronological postnatal age by the forced oscillation technique. Quantitative morphological measurements were made for smooth muscle accumulation around terminal bronchioles and indices of alveolar formation. Minimizing IMV to 3 h led to significantly better (P < 0.05) baseline respiratory system mechanics and less reactivity to methacholine in the first 3 mo of chronological age (2 mo corrected age), significantly less (P < 0.05) accumulation of smooth muscle around peripheral resistance airways (terminal bronchioles), and significantly better (P < 0.05) alveolarization at the end of 5 mo corrected age compared with continuous IMV for 6 days. We conclude that limiting the duration of IMV following preterm birth of fetal lambs leads to better respiratory system mechanics and structural outcomes later in life.
Collapse
Affiliation(s)
- Mar Janna Dahl
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Chiara Veneroni
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano University, Milan, Italy
| | - Anna Lavizzari
- U.O. di Neonatologia e Terapia Intensiva Neonatale, Department of Clinical Sciences and Community Health, University of Milan Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sydney Bowen
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Haleigh Emerson
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Andrew Rebentisch
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Elaine Dawson
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Kyle Summers
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Luke Pettet
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Zhengming Wang
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Donald M Null
- Division of Neonatology, University of California, Davis, California
| | - Bradley A Yoder
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| | - Raffaele L Dellacà
- Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano University, Milan, Italy
| | - Kurt H Albertine
- Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah
| |
Collapse
|
11
|
Amarelle L, Quintela L, Hurtado J, Malacrida L. Hyperoxia and Lungs: What We Have Learned From Animal Models. Front Med (Lausanne) 2021; 8:606678. [PMID: 33768102 PMCID: PMC7985075 DOI: 10.3389/fmed.2021.606678] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Accepted: 02/15/2021] [Indexed: 12/19/2022] Open
Abstract
Although oxygen (O2) is essential for aerobic life, it can also be an important source of cellular damage. Supra-physiological levels of O2 determine toxicity due to exacerbated reactive oxygen species (ROS) production, impairing the homeostatic balance of several cellular processes. Furthermore, injured cells activate inflammation cascades, amplifying the tissue damage. The lung is the first (but not the only) organ affected by this condition. Critically ill patients are often exposed to several insults, such as mechanical ventilation, infections, hypo-perfusion, systemic inflammation, and drug toxicity. In this scenario, it is not easy to dissect the effect of oxygen toxicity. Translational investigations with animal models are essential to explore injuring stimuli in controlled experimental conditions, and are milestones in understanding pathological mechanisms and developing therapeutic strategies. Animal models can resemble what happens in critical care or anesthesia patients under mechanical ventilation and hyperoxia, but are also critical to explore the effect of O2 on lung development and the role of hyperoxic damage on bronchopulmonary dysplasia. Here, we set out to review the hyperoxia effects on lung pathology, contributing to the field by describing and analyzing animal experimentation's main aspects and its implications on human lung diseases.
Collapse
Affiliation(s)
- Luciano Amarelle
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Lucía Quintela
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Javier Hurtado
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay
| | - Leonel Malacrida
- Department of Pathophysiology, Hospital de Clínicas, School of Medicine, Universidad de la República, Montevideo, Uruguay.,Advanced Bioimaging Unit, Institut Pasteur Montevideo and Universidad de la República, Montevideo, Uruguay
| |
Collapse
|
12
|
Callaway DA, Jiang W, Wang L, Lingappan K, Moorthy B. Oxygen-mediated lung injury in mice lacking the gene for NRF2: Rescue with the cytochrome P4501A-inducer, beta-naphthoflavone (BNF), and differential sex-specific effects. Free Radic Biol Med 2020; 160:208-218. [PMID: 32791187 PMCID: PMC7704914 DOI: 10.1016/j.freeradbiomed.2020.07.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/15/2020] [Accepted: 07/22/2020] [Indexed: 01/27/2023]
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) leads to progressive lung injury, which significantly impacts patient morbidity and mortality but may differ clinically between the sexes. Cytochrome P450 (CYP) 1A enzymes are protective against hyperoxic lung injury and may contribute to sex-dependent pathology. NRF2 is a critical transcriptional regulator of antioxidants and loss of NRF2 leads to severe hyperoxic lung injury and mortality in mice. NRF2 deficiencies and polymorphisms have been observed in patients with pulmonary diseases such as chronic obstructive pulmonary disease and severe asthma. No prior studies have evaluated whether there are sex-specific differences in oxygen-mediated lung injury in Nrf2-/- mice and there are few rescue studies. OBJECTIVE To test the hypothesis that hyperoxia induces greater lung injury and inflammation in Nrf2-/- mice compared to wild type (WT) that differs between sexes, and that this phenotype will be rescued by the administration of the cytochrome P450 (CYP) 1A inducer beta-naphthoflavone (BNF). DESIGN/METHODS Male and female 8-10-week-old WT or Nrf2-/- C57BL/6 mice were pre-treated with BNF (40 mg/kg) or corn oil control and exposed to hyperoxia (95% O2) for 68 h. Survival, pulmonary edema, neutrophil recruitment, and lung injury scores were evaluated. Gene expression of phase II detoxification enzymes, pulmonary cytokines, and Cyp1a1/2 was quantified. CYP1A1/2 protein expression and catalytic activities were also measured. RESULTS Hyperoxia exposure greatly reduced survival in Nrf2-/- mice, particularly in females. BNF treatment improved survival by 182.8% in Nrf2-/- females and by 41.4% in Nrf2-/- males as well as in WT females by 85.7%. Females had greater pulmonary edema as measured by lung weight to body weight ratios but was attenuated in all groups except Nrf2-/- females by BNF. Neutrophils doubled in Nrf2-/- lungs compared to WT in hyperoxia but were decreased in BNF-treated females of both genotypes. Pulmonary cytokine gene expression including Il-6 and Tnf-α increased in hyperoxia especially in Nrf2-/- mice and was unaffected by BNF. Pulmonary and hepatic Nqo1 gene expression w-as decreased in Nrf2-/- mice and was largely unaffected by BNF; however pulmonary Ho-1 did not vary significantly between the genotypes and was decreased in WT animals treated with BNF. Activities and protein expression of pulmonary and hepatic CYP1A1/2 were induced via BNF across all groups. Although hepatic Cyp1a2 gene expression was higher in Nrf2-/- males, the catalytic activity was higher in Nrf2-/- females. CONCLUSIONS Hyperoxia augmented lung injury in Nrf2-/- mice, and pre-treatment with BNF was protective against mortality and injury, eliminating the sex-dependent survival difference in both genotypes. Our results support the hypothesis that NRF2 protects mice against lung injury, and the fact that BNF rescues the lung injury phenotype in Nrf2-/- mice suggests that augmented CYP1A expression by BNF may contribute to the beneficial effects. Further studies could lead to the development of BNF and other flavonoids for the prevention/treatment of hyperoxic lung injury, particularly in vulnerable patients with relative NRF2 deficiency, regardless of sex.
Collapse
Affiliation(s)
- Danielle A Callaway
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA
| | - Krithika Lingappan
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, 1 Baylor Plaza, Houston, TX, 77030, USA.
| |
Collapse
|
13
|
Gastelum G, Jiang W, Wang L, Zhou G, Borkar R, Putluri N, Moorthy B. Polycyclic Aromatic Hydrocarbon-induced Pulmonary Carcinogenesis in Cytochrome P450 (CYP)1A1- and 1A2-Null Mice: Roles of CYP1A1 and CYP1A2. Toxicol Sci 2020; 177:347-361. [PMID: 32726451 PMCID: PMC7818899 DOI: 10.1093/toxsci/kfaa107] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
In 2019, lung cancer was estimated to be the leading cause of cancer deaths in humans. Polycyclic aromatic hydrocarbons (PAHs) are known to increase the risk of lung cancer. PAHs are metabolized by the cytochrome P450 (CYP)1A subfamily, comprised of the CYP1A1 and 1A2 monooxygenases. These enzymes bioactivate PAHs into reactive metabolites that induce mutagenic DNA adducts, which can lead to cancer. Past studies have investigated the role of CYP1A1 in PAH bioactivation; however, the individual roles of each CYP1A enzyme are still unknown. In this investigation, we tested the hypothesis that mice lacking the genes for Cyp1a1 or Cyp1a2 will display altered susceptibilities to PAH-induced pulmonary carcinogenesis. Wild-type, Cyp1a1-null (Cyp1a1-/-), and Cyp1a2-null (Cyp1a2-/-) male and female mice were treated with 3-methylcholanthrene for cancer initiation and tumor formation studies. In wild-type mice, CYP1A1 and 1A2 expression was induced by 3-methylcholanthrene. Cyp1a1-/- and Cyp1a2-/- mice treated with PAHs displayed a compensatory pattern, where knocking out 1 Cyp1a gene led to increased expression of the other. Cyp1a1-/- mice were resistant to DNA adduct and tumor formation, whereas Cyp1a2-/- mice displayed increased levels of both. UALCAN analysis revealed that lung adenocarcinoma patients with high levels of CYP1A2 expression survive significantly better than patients with low/medium expression. In conclusion, Cyp1a1-/- mice were less susceptible to PAH-induced pulmonary carcinogenesis, whereas Cyp1a2-/- mice were more susceptible. In addition, high CYP1A2 expression was found to be protective for lung adenocarcinoma patients. These results support the need to develop novel CYP1A1 inhibitors to mitigate human lung cancer.
Collapse
Affiliation(s)
- Grady Gastelum
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas 77030
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030
| | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030
| | - Guodong Zhou
- Institute of Biosciences and Technology, Texas A&M University, Houston, Texas 77030
| | - Roshan Borkar
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, Texas 77030
| | - Nagireddy Putluri
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, Texas 77030
| | - Bhagavatula Moorthy
- Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas 77030
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas 77030
| |
Collapse
|
14
|
Yadav A, Rana U, Michalkiewicz T, Teng R, Konduri GG. Decreased AMP-activated protein kinase (AMPK) function and protective effect of metformin in neonatal rat pups exposed to hyperoxia lung injury. Physiol Rep 2020; 8:e14587. [PMID: 32959498 PMCID: PMC7507093 DOI: 10.14814/phy2.14587] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Revised: 08/23/2020] [Accepted: 08/24/2020] [Indexed: 01/20/2023] Open
Abstract
We investigated the hypothesis that exposure of lungs at the saccular stage of development to hyperoxia leads to persistent growth arrest and dysfunction of 5'AMP-activated protein kinase (AMPK), a key energy sensor in the cell. We exposed neonatal rat pups from postnatal day 1- day 10 (P1-P10) to ≥90% oxygen or control normoxia. Pups were euthanized at P4 or P10 or recovered in normoxia until euthanasia at P21. Half of the pups in each group received AMPK activator, metformin, or saline intraperitoneally from P1 to P10. Lung histology, morphometric analysis, immunofluorescence, and immunoblots were done for changes in lung structure at P10 and P21 and AMPK function at P4, P10, and P21. Phosphorylation of AMPK (p-AMPK) was decreased in lungs at P10 and P21 in hyperoxia-exposed pups. Metformin increased the levels of p-AMPK and PGC-1α, a downstream AMPK target which regulates mitochondrial biogenesis, at P4, P10, and P21 in hyperoxia pups. Lung ATP levels decreased during hyperoxia and were increased by metformin at P10 and P21. Radial alveolar count and alveolar septal tips were decreased and mean linear intercept increased in hyperoxia-exposed pups at P10 and the changes persisted at P21; these were improved by metformin. Lung capillary number was decreased in hyperoxia-exposed pups at P10 and P21 and was restored by metformin. Hyperoxia leads to impaired AMPK function, energy balance and alveolar simplification. The AMPK activator, metformin improves AMPK function and alveolar and vascular growth in this rat pup model of hyperoxia-induced lung injury.
Collapse
Affiliation(s)
- Abha Yadav
- Neonatology DivisionUniversity of Pittsburgh Medical Center Pinnacle HospitalHarrisburgPAUSA
| | - Ujala Rana
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Teresa Michalkiewicz
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Ru‐Jeng Teng
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| | - Girija G. Konduri
- Department of PediatricsMedical College of Wisconsin and Children's Research InstituteChildren's WisconsinMilwaukeeWIUSA
| |
Collapse
|
15
|
Harer MW, Charlton JR, Tipple TE, Reidy KJ. Preterm birth and neonatal acute kidney injury: implications on adolescent and adult outcomes. J Perinatol 2020; 40:1286-1295. [PMID: 32277164 DOI: 10.1038/s41372-020-0656-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/02/2020] [Accepted: 03/11/2020] [Indexed: 02/06/2023]
Abstract
As a result of preterm birth, immature kidneys are exposed to interventions in the NICU that promote survival, but are nephrotoxic. Furthermore, the duration of renal development may be truncated in these vulnerable neonates. Immaturity and nephrotoxic exposures predispose preterm newborns to acute kidney injury (AKI), particularly in the low birth weight and extremely preterm gestational age groups. Several studies have associated preterm birth as a risk factor for future chronic kidney disease (CKD). However, only a few publications have investigated the impact of neonatal AKI on CKD development. Here, we will review the evidence linking preterm birth and AKI in the NICU to CKD and highlight the knowledge gaps and opportunities for future research. For neonatal intensive care studies, we propose the inclusion of AKI as an important short-term morbidity outcome and CKD findings such as a reduced glomerular filtration rate in the assessment of long-term outcomes.
Collapse
Affiliation(s)
- Matthew W Harer
- Department of Pediatrics, Division of Neonatology, University of Wisconsin-Madison, Madison, WI, USA
| | - Jennifer R Charlton
- Department of Pediatrics, Division of Nephrology, University of Virginia Children's Hospital, Box 800386, Charlottesville, VA, USA.
| | - Trent E Tipple
- Department of Pediatrics, Section of Neonatal-Perinatal Medicine, University of Oklahoma College of Medicine, Oklahoma City, OK, USA
| | - Kimberly J Reidy
- Department of Pediatrics, Division of Pediatric Nephrology, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, NY, USA
| |
Collapse
|
16
|
Tian LX, Tang X, Zhu JY, Luo L, Ma XY, Cheng SW, Zhang W, Tang WQ, Ma W, Yang X, Lv CZ, Liang HP. Cytochrome P450 1A1 enhances inflammatory responses and impedes phagocytosis of bacteria in macrophages during sepsis. Cell Commun Signal 2020; 18:70. [PMID: 32366266 PMCID: PMC7199371 DOI: 10.1186/s12964-020-0523-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Accepted: 01/29/2020] [Indexed: 01/28/2023] Open
Abstract
Abstract The hydroxylase cytochrome P450 1A1 (CYP1A1) is regulated by the inflammation-limiting aryl hydrocarbon receptor (AhR), but CYP1A1 immune functions remain unclear. We observed CYP1A1 overexpression in peritoneal macrophages (PMs) isolated from mice following LPS or heat-killed Escherichia. coli (E. coli) challenge. CYP1A1 overexpression augmented TNF-α and IL-6 production in RAW264.7 cells (RAW) by enhancing JNK/AP-1 signalling. CYP1A1 overexpression also promoted 12S-hydroxy-5Z,8Z,10E,14Z-eicosatetraenoic acid (12(S)-HETE) production in activated RAW, while a 12(S)-HETE antibody attenuated and 12(S)-HETE alone induced inflammatory responses. Macrophages harbouring hydroxylase-deficient CYP1A1 demonstrated reduced 12(S)-HETE generation and LPS-induced TNF-α/IL-6 secretion. CYP1A1 overexpression also impaired phagocytosis of bacteria via decreasing the expression of scavenger receptor A (SR-A) in PMs. Mice injected with CYP1A1-overexpressing PMs were more susceptible to CLP- or E. coli-induced mortality and bacteria invading, while Rhapontigenin, a selective CYP1A1 inhibitor, improved survival and bacteria clearance of mice in sepsis. CYP1A1 and 12(S)-HETE were also elevated in monocytes and plasma of septic patients and positively correlated with SOFA scores. Macrophage CYP1A1 disruption could be a promising strategy for treating sepsis. Video abstract
Graphical abstract ![]()
Collapse
Affiliation(s)
- Li-Xing Tian
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Xin Tang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Jun-Yu Zhu
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Li Luo
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Xiao-Yuan Ma
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Shao-Wen Cheng
- Trauma Center, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Wei Zhang
- Emergency and Trauma College of Hainan Medical University, Haikou, China
| | - Wan-Qi Tang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Wei Ma
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Xue Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China
| | - Chuan-Zhu Lv
- Trauma Center, The First Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Hua-Ping Liang
- State Key Laboratory of Trauma, Burns and Combined Injury, Department of Wound Infection and Drug, Daping Hospital, Army Medical University, Yuzhong District, Chongqing, China.
| |
Collapse
|
17
|
Stading R, Chu C, Couroucli X, Lingappan K, Moorthy B. Molecular role of cytochrome P4501A enzymes inoxidative stress. CURRENT OPINION IN TOXICOLOGY 2020; 20-21:77-84. [PMID: 33283080 PMCID: PMC7709944 DOI: 10.1016/j.cotox.2020.07.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Cytochrome P4501A (CYP1A) enzymes play important roles in xenobiotic and endobiotic metabolism. Due to uncoupling reactions during the enzymatic cycle, CYP1A enzymes can release reactive oxidative species (ROS) in the form of superoxide radical, hydrogen peroxide, hydroxyl radical etc. An imbalance between production of free radicals and the ability of antioxidants to detoxify the free radicals can lead to accumulation of ROS, which in turn can lead to oxidative stress. Oxidative stress can lead to inflammation and toxicity, which in turn can cause human diseases such as bronchopulmonary disease (BPD), ARDS, renal hypertension, etc. CYP1A enzymes, depending on the organ system, they either contribute or protect against oxidative injury. Thus, they have dual roles in regard to oxidative stress. This review presents an overview of the mechanistic relationship between CYP1A enzymes and oxidative stress in relation to various diseases in different organs (e.g., liver, lungs, heart, kidneys, and reproductive organs).
Collapse
Affiliation(s)
- Rachel Stading
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
| | - Chun Chu
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
| | - Xanthi Couroucli
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
| | - Krithika Lingappan
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
| | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine, Texas Children’s Hospital, Houston, TX
| |
Collapse
|
18
|
S-endoglin expression is induced in hyperoxia and contributes to altered pulmonary angiogenesis in bronchopulmonary dysplasia development. Sci Rep 2020; 10:3043. [PMID: 32080296 PMCID: PMC7033222 DOI: 10.1038/s41598-020-59928-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 02/05/2020] [Indexed: 12/11/2022] Open
Abstract
Altered pulmonary angiogenesis contributes to disrupted alveolarization, which is the main characteristic of bronchopulmonary dysplasia (BPD). Transforming growth factor β (TGFβ) plays an important role during lung vascular development, and recent studies have demonstrated that endoglin is engaged in the modulation of TGFβ downstream signalling. Although there are two different isoforms of endoglin, L- and S-endoglin, little is known about the effect of S-endoglin in developing lungs. We analysed the expression of both L- and S-endoglin in the lung vasculature and its contribution to TGFβ-activin-like kinase (ALK)-Smad signalling with respect to BPD development. Hyperoxia impaired pulmonary angiogenesis accompanied by alveolar simplification in neonatal mouse lungs. S-endoglin, phosphorylated Smad2/3 and connective tissue growth factor levels were significantly increased in hyperoxia-exposed mice, while L-endoglin, phosphor-Smad1/5 and platelet-endothelial cell adhesion molecule-1 levels were significantly decreased. Hyperoxia suppressed the tubular growth of human pulmonary microvascular endothelial cells (ECs), and the selective inhibition of ALK5 signalling restored tubular growth. These results indicate that hyperoxia alters the balance in two isoforms of endoglin towards increased S-endoglin and that S-endoglin attenuates TGFβ-ALK1-Smad1/5 signalling but stimulates TGFβ-ALK5-Smad2/3 signalling in pulmonary ECs, which may lead to impaired pulmonary angiogenesis in developing lungs.
Collapse
|
19
|
Cheng H, Wang H, Wu C, Zhang Y, Bao T, Tian Z. Proteomic analysis of sex differences in hyperoxic lung injury in neonatal mice. Int J Med Sci 2020; 17:2440-2448. [PMID: 33029086 PMCID: PMC7532490 DOI: 10.7150/ijms.42073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 08/24/2020] [Indexed: 12/11/2022] Open
Abstract
Sex-specific differences in the severity of bronchopulmonary dysplasia (BPD) are due to different susceptibility to hyperoxic lung injury, but the mechanism is unclear. In this study, neonatal male and female mouse pups (C57BL/6J) were exposed to hyperoxia and lung tissues were excised on postnatal day 7 for histological analysis and tandem mass tags proteomic analysis. We found that the lung sections from the male mice following postnatal hyperoxia exposure had increased alveolar simplification, significant aberrant pulmonary vascularization and arrest in angiogenesis compared with females. Comparison of differentially expressed proteins revealed 377 proteins unique to female and 425 unique to male as well as 750 proteins in both male and female. Bioinformatics analysis suggested that several differentially expressed proteins could contribute to the differences in sex-specific susceptibility to hyperoxic lung injury. Our results may help identify sex-specific biomarkers and therapeutic targets of BPD.
Collapse
Affiliation(s)
- Huaiping Cheng
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| | - Huifang Wang
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| | - Chantong Wu
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| | - Yuan Zhang
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| | - Tianping Bao
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| | - Zhaofang Tian
- Department of Neonatology, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University; the Pediatric Diagnosis and Treatment Respiratory Key Laboratory of Huai'an, Huai'an 223300, China
| |
Collapse
|
20
|
Veith AC, Bou Aram B, Jiang W, Wang L, Zhou G, Jefcoate CR, Couroucli XI, Lingappan K, Moorthy B. Mice Lacking the Cytochrome P450 1B1 Gene Are Less Susceptible to Hyperoxic Lung Injury Than Wild Type. Toxicol Sci 2019; 165:462-474. [PMID: 29939353 DOI: 10.1093/toxsci/kfy154] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Supplemental oxygen is a life-saving intervention administered to individuals suffering from respiratory distress, including adults with acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). Despite the clinical benefit, supplemental oxygen can create a hyperoxic environment that increases reactive oxygen species, oxidative stress, and lung injury. We have previously shown that cytochrome P450 (CYP)1A enzymes decrease susceptibility to hyperoxia-induced lung injury. In this investigation, we determined the role of CYP1B1 in hyperoxic lung injury in vivo. Eight- to ten-week old C57BL/6 wild type (WT) and Cyp1b1-/- mice were exposed to hyperoxia (>95% O2) for 24-72 h or maintained in room air (21% O2). Lung injury was assessed by histology and lung weight to body weight (LW/BW) ratios. Extent of inflammation was determined by assessing pulmonary neutrophil infiltration and cytokine levels. Lipid peroxidation markers were quantified by gas chromatography mass spectrometry, and oxidative DNA adducts were quantified by 32P-postlabeling as markers of oxidative stress. We found that Cyp1b1-/- mice displayed attenuation of lung weight and pulmonary edema, particularly after 48-72 h of hyperoxia compared with WT controls. Further, Cyp1b1-/- mice displayed decreased levels of pulmonary oxidative DNA adducts and pulmonary isofurans after 24 h of hyperoxia. Cyp1b1-/- mice also showed increased pulmonary CYP1A1 and 1A2 and mRNA expression. In summary, our results support the hypothesis that Cyp1b1-/- mice display decreased hyperoxic lung injury than wild type counterparts and that CYP1B1 may act as a pro-oxidant during hyperoxia exposure, contributing to increases in oxidative DNA damage and accumulation of lipid hydroperoxides.
Collapse
Affiliation(s)
- Alex C Veith
- Section of Neonatology, Department of Pediatrics.,Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas
| | | | - Weiwu Jiang
- Section of Neonatology, Department of Pediatrics
| | - Lihua Wang
- Section of Neonatology, Department of Pediatrics
| | - Guodong Zhou
- Institute of Biosciences and Technology, Texas A&M University Health Science Center, Houston, Texas
| | - Colin R Jefcoate
- Department of Cell and Regenerative Biology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | | | | | - Bhagavatula Moorthy
- Section of Neonatology, Department of Pediatrics.,Interdepartmental Program in Translational Biology and Molecular Medicine, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
21
|
Gene Expression Signatures Point to a Male Sex-Specific Lung Mesenchymal Cell PDGF Receptor Signaling Defect in Infants Developing Bronchopulmonary Dysplasia. Sci Rep 2018; 8:17070. [PMID: 30459472 PMCID: PMC6244280 DOI: 10.1038/s41598-018-35256-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Accepted: 10/26/2018] [Indexed: 12/14/2022] Open
Abstract
Male sex is a risk factor for development of bronchopulmonary dysplasia (BPD), a common chronic lung disease following preterm birth. We previously found that tracheal aspirate mesenchymal stromal cells (MSCs) from premature infants developing BPD show reduced expression of PDGFRα, which is required for normal lung development. We hypothesized that MSCs from male infants developing BPD exhibit a pathologic gene expression profile deficient in PDGFR and its downstream effectors, thereby favoring delayed lung development. In a discovery cohort of 6 male and 7 female premature infants, we analyzed the tracheal aspirate MSCs transcriptome. A unique gene signature distinguished MSCs from male infants developing BPD from all other MSCs. Genes involved in lung development, PDGF signaling and extracellular matrix remodeling were differentially expressed. We sought to confirm these findings in a second cohort of 13 male and 12 female premature infants. mRNA expression of PDGFRA, FGF7, WNT2, SPRY1, MMP3 and FOXF2 were significantly lower in MSCs from male infants developing BPD. In female infants developing BPD, tracheal aspirate levels of proinflammatory CCL2 and profibrotic Galectin-1 were higher compared to male infants developing BPD and female not developing BPD. Our findings support a notion for sex-specific differences in the mechanisms of BPD development.
Collapse
|
22
|
Dahl MJ, Bowen S, Aoki T, Rebentisch A, Dawson E, Pettet L, Emerson H, Yu B, Wang Z, Yang H, Zhang C, Presson AP, Joss-Moore L, Null DM, Yoder BA, Albertine KH. Former-preterm lambs have persistent alveolar simplification at 2 and 5 months corrected postnatal age. Am J Physiol Lung Cell Mol Physiol 2018; 315:L816-L833. [PMID: 30211655 PMCID: PMC6295507 DOI: 10.1152/ajplung.00249.2018] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 08/29/2018] [Accepted: 09/02/2018] [Indexed: 12/29/2022] Open
Abstract
Preterm birth and mechanical ventilation (MV) frequently lead to bronchopulmonary dysplasia, the histopathological hallmark of which is alveolar simplification. How developmental immaturity and ongoing injury, repair, and remodeling impact completion of alveolar formation later in life is not known, in part because of lack of suitable animal models. We report a new model, using former-preterm lambs, to test the hypothesis that they will have persistent alveolar simplification later in life. Moderately preterm lambs (~85% gestation) were supported by MV for ~6 days before being transitioned from all respiratory support to become former-preterm lambs. Results are compared with term control lambs that were not ventilated, and between males (M) and females (F). Alveolar simplification was quantified morphometrically and stereologically at 2 mo (4 M, 4 F) or 5 mo (4 M, 6 F) corrected postnatal age (cPNA) compared with unventilated, age-matched term control lambs (4 M, 4 F per control group). These postnatal ages in sheep are equivalent to human postnatal ages of 1-2 yr and ~6 yr, respectively. Multivariable linear regression results showed that former-preterm lambs at 2 or 5 mo cPNA had significantly thicker distal airspace walls ( P < 0.001 and P < 0.009, respectively), lower volume density of secondary septa ( P < 0.007 and P < 0.001, respectively), and lower radial alveolar count ( P < 0.003 and P < 0.020, respectively) compared with term control lambs. Sex-specific differences were not detected. We conclude that moderate preterm birth and MV for ~6 days impedes completion of alveolarization in former-preterm lambs. This new model provides the opportunity to identify underlying pathogenic mechanisms that may reveal treatment approaches.
Collapse
Affiliation(s)
- Mar Janna Dahl
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Sydney Bowen
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Toshio Aoki
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Andrew Rebentisch
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Elaine Dawson
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Luke Pettet
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Haleigh Emerson
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Baifeng Yu
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Zhengming Wang
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Haixia Yang
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Chong Zhang
- Division of Epidemiology, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
| | - Angela P Presson
- Division of Epidemiology, Department of Internal Medicine, University of Utah , Salt Lake City, Utah
- Division of Critical Care, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Lisa Joss-Moore
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Donald M Null
- Division of Neonatology, University of California , Davis, California
| | - Bradley A Yoder
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| | - Kurt H Albertine
- Division of Neonatology, Department of Pediatrics, University of Utah , Salt Lake City, Utah
| |
Collapse
|
23
|
Lingappan K, Maturu P, Liang YW, Jiang W, Wang L, Moorthy B, Couroucli XI. β-Naphthoflavone treatment attenuates neonatal hyperoxic lung injury in wild type and Cyp1a2-knockout mice. Toxicol Appl Pharmacol 2018; 339:133-142. [PMID: 29180065 PMCID: PMC5758404 DOI: 10.1016/j.taap.2017.11.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Revised: 11/19/2017] [Accepted: 11/21/2017] [Indexed: 01/06/2023]
Abstract
Exposure to supraphysiological concentrations of oxygen (hyperoxia) leads to bronchopulmonary dysplasia (BPD), one of the most common pulmonary morbidities in preterm neonates, which is more prevalent in males than females. Beta-naphthoflavone (BNF) is protective against hyperoxic lung injury in adult and neonatal wild type (WT) mice and in and mice lacking Cyp1a1gene. In this investigation, we tested the hypothesis that BNF treatment will attenuate neonatal hyperoxic lung injury in WT and Cyp1a2-/- mice, and elucidated the effect of sex-specific differences. Newborn WT or Cyp1a2-/- mice were treated with BNF (10mg/kg) or the vehicle corn oil (CO) i.p., from postnatal day (PND) 2 to 8 once every other day, while being maintained in room air or hyperoxia (85% O2) for 14days. Hyperoxia exposure lead to alveolar simplification and arrest in angiogenesis in WT as well as Cyp1a2-/- mice No significant differences were seen between WT and Cyp1a2-/- mice. Cyp1a2-/- female mice had better preservation of pulmonary angiogenesis at PND15 compared to similarly exposed males. BNF treatment attenuated lung injury and inflammation in both genotypes, and this was accompanied by a significant induction of hepatic and pulmonary CYP1A1 in WT but not in Cyp1a2-/- mice. BNF treatment increased NADPH quinone oxidoreductase (NQO1) mRNA levels in Cyp1a2-/- mouse livers compared to WT mice. These results suggest that BNF is protective in neonatal mice exposed to hyperoxia independent of CYP1A2 and this may entail the protective effect of phase II enzymes like NQO1.
Collapse
Affiliation(s)
- Krithika Lingappan
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Paramahamsa Maturu
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Yanhong Wei Liang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Weiwu Jiang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Lihua Wang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Bhagavatula Moorthy
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA
| | - Xanthi I Couroucli
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, TX, USA.
| |
Collapse
|
24
|
Abstract
The acute respiratory distress syndrome (ARDS) is a devastating illness characterized by severe hypoxemia and diffuse alveolar damage. Direct lung infection is the leading cause of ARDS and can be modeled in mice using sterile models of inflammation or live pathogens. In this chapter, two mouse models for ARDS are defined. These include an infectious model of ARDS driven by direct administration of Streptococcus pneumoniae and a sterile inflammatory model mediated by intratracheal administration of lipopolysaccharide. Methods for growth and preparation of Streptococcus pneumoniae are provided as methods to assess lung inflammation and injury.
Collapse
Affiliation(s)
- Franco R D'Alessio
- Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
| |
Collapse
|
25
|
Gianazza E, Miller I, Guerrini U, Palazzolo L, Parravicini C, Eberini I. Gender proteomics I. Which proteins in non-sexual organs. J Proteomics 2017; 178:7-17. [PMID: 28988882 DOI: 10.1016/j.jprot.2017.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/26/2017] [Accepted: 10/04/2017] [Indexed: 12/15/2022]
Abstract
Differences related to gender have long been neglected but recent investigations show that they are widespread and may be recognized with all types of omics approaches, both in tissues and in biological fluids. Our review compiles evidence collected with proteomics techniques in our species, mainly focusing on baseline parameters in non-sexual organs in healthy men and women. Data from human specimens had to be replaced with information from other mammals every time invasive procedures of sample procurement were involved. SIGNIFICANCE As our knowledge, and the methods to build it, get refined, gender differences need to receive more and more attention, as they influence the outcome of all aspects in lifestyle, including diet, exercise and environmental factors. In turn this background modulates a differential susceptibility to some disease, or a different pathogenetic mechanism, depending on gender, and a different response to pharmacological therapy. Preparing this review we meant to raise awareness about the gender issue. We anticipate that more and more often, in the future, separate evaluations will be carried out on male and female subjects as an alternative - and an upgrade - to the current approach of reference and test groups being 'matched for age and sex'.
Collapse
Affiliation(s)
- Elisabetta Gianazza
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, I-20133 Milano, Italy.
| | - Ingrid Miller
- Institut für Medizinische Biochemie, Veterinärmedizinische Universität Wien, Veterinärplatz 1, A-1210 Wien, Austria
| | - Uliano Guerrini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, I-20133 Milano, Italy
| | - Luca Palazzolo
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, I-20133 Milano, Italy
| | - Chiara Parravicini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, I-20133 Milano, Italy
| | - Ivano Eberini
- Dipartimento di Scienze Farmacologiche e Biomolecolari, Università degli Studi di Milano, Via Balzaretti 9, I-20133 Milano, Italy
| |
Collapse
|
26
|
Sutherland MR, Béland C, Lukaszewski MA, Cloutier A, Bertagnolli M, Nuyt AM. Age- and sex-related changes in rat renal function and pathology following neonatal hyperoxia exposure. Physiol Rep 2017; 4:4/15/e12887. [PMID: 27528005 PMCID: PMC4985552 DOI: 10.14814/phy2.12887] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Accepted: 07/18/2016] [Indexed: 12/04/2022] Open
Abstract
Preterm neonates are prematurely exposed to high oxygen levels at birth which may adversely impact ongoing renal development. The aim of this study was to determine the effects of neonatal hyperoxia exposure on renal function and morphology with aging. Sprague Dawley rat pups were raised in a hyperoxic environment (80% oxygen) from P3 to P10 during ongoing postnatal nephrogenesis. Control litters were kept in room air (n = 6–8 litters/group; one male, one female/litter/age). Kidney function (urine and plasma creatinine, sodium, and protein) and morphology (renal corpuscle size, glomerulosclerosis, fibrosis, and glomerular crescents) were assessed at 1, 5, and 11 months of age. Neonatal hyperoxia exposure had no impact on body or kidney weights. Creatinine clearance was significantly reduced following hyperoxia exposure at 5 months; there was no significant effect on renal function at 1 or 11 months. The percentage of crescentic glomeruli (indicative of glomerular injury) was markedly increased in 11 month hyperoxia‐exposed males. Renal corpuscle size, glomerulosclerosis index, and renal fibrosis were not affected. Findings suggest that exposure to high oxygen levels during development may impact renal functional capacity and increase susceptibility to renal disease in adulthood depending on age and sex.
Collapse
Affiliation(s)
- Megan R Sutherland
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| | - Chanel Béland
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| | - Marie-Amélie Lukaszewski
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| | - Anik Cloutier
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| | - Mariane Bertagnolli
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| | - Anne Monique Nuyt
- Sainte-Justine University Hospital and Research Center, Montreal, Quebec, Canada Department of Pediatrics, Université de Montréal, Montreal, Quebec, Canada
| |
Collapse
|
27
|
Achanta S, Jordt SE. TRPA1: Acrolein meets its target. Toxicol Appl Pharmacol 2017; 324:45-50. [PMID: 28284857 DOI: 10.1016/j.taap.2017.03.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Accepted: 03/07/2017] [Indexed: 12/29/2022]
Affiliation(s)
- Satyanarayana Achanta
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, United States
| | - Sven-Eric Jordt
- Department of Anesthesiology, Duke University School of Medicine, Durham, NC 27710, United States; Yale Tobacco Center of Regulatory Science (TCORS), Department of Psychiatry, Yale School of Medicine, New Haven, CT 06519, United States.
| |
Collapse
|
28
|
Sammour I, Somashekar S, Huang J, Batlahally S, Breton M, Valasaki K, Khan A, Wu S, Young KC. The Effect of Gender on Mesenchymal Stem Cell (MSC) Efficacy in Neonatal Hyperoxia-Induced Lung Injury. PLoS One 2016; 11:e0164269. [PMID: 27711256 PMCID: PMC5053475 DOI: 10.1371/journal.pone.0164269] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 09/22/2016] [Indexed: 12/28/2022] Open
Abstract
Background Mesenchymal stem cells (MSC) improve alveolar and vascular structures in experimental models of bronchopulmonary dysplasia (BPD). Female MSC secrete more anti-inflammatory and pro-angiogenic factors as compared to male MSC. Whether the therapeutic efficacy of MSC in attenuating lung injury in an experimental model of BPD is influenced by the sex of the donor MSC or recipient is unknown. Here we tested the hypothesis that female MSC would have greater lung regenerative properties than male MSC in experimental BPD and this benefit would be more evident in males. Objective To determine whether intra-tracheal (IT) administration of female MSC to neonatal rats with experimental BPD has more beneficial reparative effects as compared to IT male MSC. Methods Newborn Sprague-Dawley rats exposed to normoxia (RA) or hyperoxia (85% O2) from postnatal day (P) 2- P21 were randomly assigned to receive male or female IT bone marrow (BM)-derived green fluorescent protein (GFP+) MSC (1 x 106 cells/50 μl), or Placebo on P7. Pulmonary hypertension (PH), vascular remodeling, alveolarization, and angiogenesis were assessed at P21. PH was determined by measuring right ventricular systolic pressure (RVSP) and pulmonary vascular remodeling was evaluated by quantifying the percentage of muscularized peripheral pulmonary vessels. Alveolarization was evaluated by measuring mean linear intercept (MLI) and radial alveolar count (RAC). Angiogenesis was determined by measuring vascular density. Data are expressed as mean ± SD, and analyzed by ANOVA. Results There were no significant differences in the RA groups. Exposure to hyperoxia resulted in a decrease in vascular density and RAC, with a significant increase in MLI, RVSP, and the percentage of partially and fully muscularized pulmonary arterioles. Administration of both male and female MSC significantly improved vascular density, alveolarization, RVSP, percent of muscularized vessels and alveolarization. Interestingly, the improvement in PH and vascular remodeling was more robust in the hyperoxic rodents who received MSC from female donors. In keeping with our hypothesis, male animals receiving female MSC, had a greater improvement in vascular remodeling. This was accompanied by a more significant decrease in lung pro-inflammatory markers and a larger increase in anti-inflammatory and pro-angiogenic markers in male rodents that received female MSC. There were no significant differences in MSC engraftment among groups. Conclusions Female BM-derived MSC have greater therapeutic efficacy than male MSC in reducing neonatal hyperoxia-induced lung inflammation and vascular remodeling. Furthermore, the beneficial effects of female MSC were more pronounced in male animals. Together, these findings suggest that female MSC maybe the most potent BM-derived MSC population for lung repair in severe BPD complicated by PH.
Collapse
Affiliation(s)
- Ibrahim Sammour
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
- Batchelor Children’s Research Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Santhosh Somashekar
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
- Batchelor Children’s Research Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Jian Huang
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
- Batchelor Children’s Research Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Sunil Batlahally
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Matthew Breton
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Krystalenia Valasaki
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Aisha Khan
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Shu Wu
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
- Batchelor Children’s Research Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
| | - Karen C. Young
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL, United States of America
- Batchelor Children’s Research Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
- The Interdisciplinary Stem Cell Institute, University of Miami Miller School of Medicine, Miami, FL, United States of America
- * E-mail:
| |
Collapse
|
29
|
Šafranko ŽM, Balog T, Musa M, Bujak IT, Sobočanec S. The effect of 17β-estradiol on sex-dimorphic cytochrome P450 expression patterns induced by hyperoxia in the liver of male CBA/H mice. Mol Cell Biochem 2016; 421:183-91. [DOI: 10.1007/s11010-016-2802-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 08/25/2016] [Indexed: 10/21/2022]
|
30
|
Lingappan K, Jiang W, Wang L, Moorthy B. Sex-specific differences in neonatal hyperoxic lung injury. Am J Physiol Lung Cell Mol Physiol 2016; 311:L481-93. [PMID: 27343189 DOI: 10.1152/ajplung.00047.2016] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 06/24/2016] [Indexed: 11/22/2022] Open
Abstract
Male sex is considered an independent predictor for the development of bronchopulmonary dysplasia (BPD) after adjusting for other confounders. BPD is characterized by an arrest in lung development with marked impairment of alveolar septation and vascular development. The reasons underlying sexually dimorphic outcomes in premature neonates are not known. In this investigation, we tested the hypothesis that male neonatal mice will be more susceptible to hyperoxic lung injury and will display larger arrest in lung alveolarization. Neonatal male and female mice (C57BL/6) were exposed to hyperoxia [95% FiO2, postnatal day (PND) 1-5] and euthanized on PND 7 and 21. Extent of alveolarization, pulmonary vascularization, inflammation, and modulation of the NF-κB pathway were determined and compared with room air controls. Macrophage and neutrophil infiltration was significantly increased in hyperoxia-exposed animals but was increased to a larger extent in males compared with females. Lung morphometry showed a higher mean linear intercept (MLI) and a lower radial alveolar count (RAC) and therefore greater arrest in lung development in male mice. This was accompanied by a significant decrease in the expression of markers of angiogenesis (PECAM1 and VEGFR2) in males after hyperoxia exposure compared with females. Interestingly, female mice showed increased activation of the NF-κB pathway in the lungs compared with males. These results support the hypothesis that sex plays a crucial role in hyperoxia-mediated lung injury in this model. Elucidation of the sex-specific molecular mechanisms may aid in the development of novel individualized therapies to prevent/treat BPD.
Collapse
Affiliation(s)
- Krithika Lingappan
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Weiwu Jiang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Lihua Wang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| | - Bhagavatula Moorthy
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas
| |
Collapse
|
31
|
Hendrickson CM, Howard BM, Kornblith LZ, Conroy AS, Nelson MF, Zhuo H, Liu KD, Manley GT, Matthay MA, Calfee CS, Cohen MJ. The acute respiratory distress syndrome following isolated severe traumatic brain injury. J Trauma Acute Care Surg 2016; 80:989-97. [PMID: 26881489 PMCID: PMC5851280 DOI: 10.1097/ta.0000000000000982] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) is common after traumatic brain injury (TBI) and is associated with worse neurologic outcomes and longer hospitalization. However, the incidence and associated causes of ARDS in isolated TBI have not been well studied. METHODS We performed a subgroup analysis of 210 consecutive patients with isolated severe TBI enrolled in a prospective observational cohort at a Level 1 trauma center between 2005 and 2014. Subjects required endotracheal intubation and had isolated severe TBI defined by a head Abbreviated Injury Scale (AIS) score of 3 or greater and AIS score lower than 3 in all other categories. ARDS within the first 8 days of admission was rigorously adjudicated using Berlin criteria. Regression analyses were used to test the association between predictors of interest and ARDS. RESULTS The incidence of ARDS in the first 8 days after severe isolated TBI was 30%. Patients who developed ARDS were administered more crystalloids (4.3 L vs. 3.5 L, p = 0.005) and blood products in the first 12 hours of admission. Patients with ARDS had significantly worse clinical outcomes measured at 28 days, including longer median intensive care unit and hospital stays (4 days vs. 13 days, p < 0.001, and 7.5 days vs. 14.5 days, p < 0.001, respectively). In unadjusted logistic regression analyses, the odds of developing ARDS were significantly associated with head AIS score (odds ratio [OR], 1.8; p = 0.018), male sex (OR, 2.9; p = 0.012), and early transfusion of platelets (OR, 2.8; p = 0.003). These associations were similar in a multivariate logistic regression model. CONCLUSION In the era of balanced hemostatic resuscitation practices, severity of head injury, male sex, early crystalloids, and early transfusion of platelets are associated with a higher risk of ARDS after severe isolated TBI. Early transfusion of platelets after severe TBI may be a modifiable risk factor for ARDS, and these findings invite further investigation into causal mechanisms driving this observed association. LEVEL OF EVIDENCE Prognostic/epidemiologic study, level III.
Collapse
Affiliation(s)
- Carolyn M Hendrickson
- From the Division of Pulmonary and Critical Care Medicine (C.M.H., H.Z., C.S.C, M.A.M.) and Division of Nephrology and Critical Care Medicine (K.D.L.), Departments of Medicine and Anesthesia, University of California San Francisco; and Department of Surgery (B.M.H., L.Z.K., A.S.C., M.F.N., M.J.C.) and Department of Neurological Surgery (G.T.M.), University of California San Francisco and San Francisco General Hospital; San Francisco, California
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Namba F, Ogawa R, Ito M, Watanabe T, Dennery PA, Tamura M. Sex-related differences in long-term pulmonary outcomes of neonatal hyperoxia in mice. Exp Lung Res 2016; 42:57-65. [DOI: 10.3109/01902148.2016.1141264] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
33
|
Silva DMG, Nardiello C, Pozarska A, Morty RE. Recent advances in the mechanisms of lung alveolarization and the pathogenesis of bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2015; 309:L1239-72. [PMID: 26361876 DOI: 10.1152/ajplung.00268.2015] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2015] [Accepted: 09/09/2015] [Indexed: 02/08/2023] Open
Abstract
Alveolarization is the process by which the alveoli, the principal gas exchange units of the lung, are formed. Along with the maturation of the pulmonary vasculature, alveolarization is the objective of late lung development. The terminal airspaces that were formed during early lung development are divided by the process of secondary septation, progressively generating an increasing number of alveoli that are of smaller size, which substantially increases the surface area over which gas exchange can take place. Disturbances to alveolarization occur in bronchopulmonary dysplasia (BPD), which can be complicated by perturbations to the pulmonary vasculature that are associated with the development of pulmonary hypertension. Disturbances to lung development may also occur in persistent pulmonary hypertension of the newborn in term newborn infants, as well as in patients with congenital diaphragmatic hernia. These disturbances can lead to the formation of lungs with fewer and larger alveoli and a dysmorphic pulmonary vasculature. Consequently, affected lungs exhibit a reduced capacity for gas exchange, with important implications for morbidity and mortality in the immediate postnatal period and respiratory health consequences that may persist into adulthood. It is the objective of this Perspectives article to update the reader about recent developments in our understanding of the molecular mechanisms of alveolarization and the pathogenesis of BPD.
Collapse
Affiliation(s)
- Diogo M G Silva
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Claudio Nardiello
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Agnieszka Pozarska
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| | - Rory E Morty
- Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center (UGMLC), Member of the German Center for Lung Research (DZL), Giessen, Germany; Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany
| |
Collapse
|
34
|
Wang L, Lingappan K, Jiang W, Couroucli XI, Welty SE, Shivanna B, Barrios R, Wang G, Firoze Khan M, Gonzalez FJ, Jackson Roberts L, Moorthy B. Disruption of cytochrome P4501A2 in mice leads to increased susceptibility to hyperoxic lung injury. Free Radic Biol Med 2015; 82:147-59. [PMID: 25680282 PMCID: PMC4418801 DOI: 10.1016/j.freeradbiomed.2015.01.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Revised: 01/09/2015] [Accepted: 01/19/2015] [Indexed: 12/16/2022]
Abstract
Hyperoxia contributes to acute lung injury in diseases such as acute respiratory distress syndrome. Cytochrome P450 (CYP) 1A enzymes have been implicated in hyperoxic lung injury, but the mechanistic role of CYP1A2 in pulmonary injury is not known. We hypothesized that mice lacking the gene Cyp1a2 (which is predominantly expressed in the liver) will be more sensitive to lung injury and inflammation mediated by hyperoxia and that CYP1A2 will play a protective role by attenuating lipid peroxidation and oxidative stress in the lung. Eight- to ten-week-old WT (C57BL/6) or Cyp1a2(-/-) mice were exposed to hyperoxia (>95% O2) or maintained in room air for 24-72 h. Lung injury was assessed by determining the ratio of lung weight/body weight (LW/BW) and by histology. Extent of inflammation was determined by measuring the number of neutrophils in the lung as well as cytokine expression. The Cyp1a2(-/-) mice under hyperoxic conditions showed increased LW/BW ratios, lung injury, neutrophil infiltration, and IL-6 and TNF-α levels and augmented lipid peroxidation, as evidenced by increased formation of malondialdehyde- and 4-hydroxynonenal-protein adducts and pulmonary isofurans compared to WT mice. In vitro experiments showed that the F2-isoprostane PGF2-α is metabolized by CYP1A2 to a dinor metabolite, providing evidence for a catalytic role for CYP1A2 in the metabolism of F2-isoprostanes. In summary, our results support the hypothesis that hepatic CYP1A2 plays a critical role in the attenuation of hyperoxic lung injury by decreasing lipid peroxidation and oxidative stress in vivo.
Collapse
Affiliation(s)
- Lihua Wang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Krithika Lingappan
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Weiwu Jiang
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Xanthi I Couroucli
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Stephen E Welty
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Binoy Shivanna
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA
| | - Roberto Barrios
- Department of Pathology, Houston Methodist Research Institute, Houston, TX 77030, USA
| | - Gangduo Wang
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - M Firoze Khan
- Department of Pathology, University of Texas Medical Branch, Galveston, TX 77555, USA
| | - Frank J Gonzalez
- Laboratory of Molecular Carcinogenesis, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - L Jackson Roberts
- Department of Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37240, USA
| | - Bhagavatula Moorthy
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, Texas Children's Hospital, Baylor College of Medicine, Houston, TX 77030, USA.
| |
Collapse
|
35
|
Sex-specific differences in hyperoxic lung injury in mice: role of cytochrome P450 (CYP)1A. Toxicology 2015; 331:14-23. [PMID: 25703676 DOI: 10.1016/j.tox.2015.01.019] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2014] [Revised: 01/15/2015] [Accepted: 01/26/2015] [Indexed: 01/27/2023]
Abstract
Sex-specific differences in pulmonary morbidity in adults and preterm infants are well documented. Hyperoxia contributes to lung injury in experimental animals and humans. Cytochrome P450 (CYP) 1A enzymes have been shown to play a mechanistic role in hyperoxic lung injury (HLI) in animal models. Whether CYP1A enzymes contribute to gender-specific differences in relation to HLI is unknown. In this investigation, we tested the hypothesis that mice will display gender-specific differences in HLI, and that this phenomenon will be altered in mice lacking the genes for Cyp1a1 or 1a2. Eight week-old male and female wild type (WT) (C57BL/6J) mice, Cyp1a1-/-, and Cyp1a2-/- mice were exposed to 72h of hyperoxia (FiO2>0.95). Lung injury and inflammation were assessed and pulmonary and hepatic CYP1A1 and CYP1A2 levels were quantified at the enzyme activity, protein and mRNA level. Upon exposure to hyperoxia, liver and lung microsomal proteins showed higher pulmonary CYP1A1 (apoprotein level and activity) in WT females compared to WT males and a greater induction in hepatic CYP1A2 mRNA levels and activity in WT females after hyperoxia exposure. The gender based female advantage was lost or reversed in Cyp1a1-/- and Cyp1a2-/- mice. These findings suggest an important role for CYP1A enzymes in the gender-specific modulation of hyperoxic lung injury.
Collapse
|
36
|
Cho HY, Jedlicka AE, Gladwell W, Marzec J, McCaw ZR, Bienstock RJ, Kleeberger SR. Association of Nrf2 polymorphism haplotypes with acute lung injury phenotypes in inbred strains of mice. Antioxid Redox Signal 2015; 22:325-38. [PMID: 25268541 PMCID: PMC4298158 DOI: 10.1089/ars.2014.5942] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AIMS Nrf2 is a master transcription factor for antioxidant response element (ARE)-mediated cytoprotective gene induction. A protective role for pulmonary Nrf2 was determined in model oxidative disorders, including hyperoxia-induced acute lung injury (ALI). To obtain additional insights into the function and genetic regulation of Nrf2, we assessed functional single nucleotide polymorphisms (SNPs) of Nrf2 in inbred mouse strains and tested whether sequence variation is associated with hyperoxia susceptibility. RESULTS Nrf2 SNPs were compiled from publicly available databases and by re-sequencing DNA from inbred strains. Hierarchical clustering of Nrf2 SNPs categorized the strains into three major haplotypes. Hyperoxia susceptibility was greater in haplotypes 2 and 3 strains than in haplotype 1 strains. A promoter SNP -103 T/C adding an Sp1 binding site in haplotype 2 diminished promoter activation basally and under hyperoxia. Haplotype 3 mice bearing nonsynonymous coding SNPs located in (1862 A/T, His543Gln) and adjacent to (1417 T/C, Thr395Ile) the Neh1 domain showed suppressed nuclear transactivation of pulmonary Nrf2 relative to other strains, and overexpression of haplotype 3 Nrf2 showed lower ARE responsiveness than overexpression of haplotype 1 Nrf2 in airway cells. Importantly, we found a significant correlation of Nrf2 haplotypes and hyperoxic lung injury phenotypes. INNOVATION AND CONCLUSION The results indicate significant influence of Nrf2 polymorphisms and haplotypes on gene function and hyperoxia susceptibility. Our findings further support Nrf2 as a genetic determinant in ALI pathogenesis and provide useful tools for investigators who use mouse strains classified by Nrf2 haplotypes to elucidate the role for Nrf2 in oxidative disorders.
Collapse
Affiliation(s)
- Hye-Youn Cho
- 1 Laboratory of Respiratory Biology, National Institute of Environmental Health Sciences, National Institutes of Health , Research Triangle Park, North Carolina
| | | | | | | | | | | | | |
Collapse
|
37
|
Mizushina Y, Shirasuna K, Usui F, Karasawa T, Kawashima A, Kimura H, Kobayashi M, Komada T, Inoue Y, Mato N, Yamasawa H, Latz E, Iwakura Y, Kasahara T, Bando M, Sugiyama Y, Takahashi M. NLRP3 protein deficiency exacerbates hyperoxia-induced lethality through Stat3 protein signaling independent of interleukin-1β. J Biol Chem 2014; 290:5065-5077. [PMID: 25548278 DOI: 10.1074/jbc.m114.603217] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Supplemental oxygen inhalation is frequently used to treat severe respiratory failure; however, prolonged exposure to hyperoxia causes hyperoxic acute lung injury (HALI), which induces acute respiratory distress syndrome and leads to high mortality rates. Recent investigations suggest the possible role of NLRP3 inflammasomes, which regulate IL-1β production and lead to inflammatory responses, in the pathophysiology of HALI; however, their role is not fully understood. In this study, we investigated the role of NLRP3 inflammasomes in mice with HALI. Under hyperoxic conditions, NLRP3(-/-) mice died at a higher rate compared with wild-type and IL-1β(-/-) mice, and there was no difference in IL-1β production in their lungs. Under hyperoxic conditions, the lungs of NLRP3(-/-) mice exhibited reduced inflammatory responses, such as inflammatory cell infiltration and cytokine expression, as well as increased and decreased expression of MMP-9 and Bcl-2, respectively. NLRP3(-/-) mice exhibited diminished expression and activation of Stat3, which regulates MMP-9 and Bcl-2, in addition to increased numbers of apoptotic alveolar epithelial cells. In vitro experiments revealed that alveolar macrophages and neutrophils promoted Stat3 activation in alveolar epithelial cells. Furthermore, NLRP3 deficiency impaired the migration of neutrophils and chemokine expression by macrophages. These findings demonstrate that NLRP3 regulates Stat3 signaling in alveolar epithelial cells by affecting macrophage and neutrophil function independent of IL-1β production and contributes to the pathophysiology of HALI.
Collapse
Affiliation(s)
- Yoshiko Mizushina
- From the Division of Inflammation Research, Center for Molecular Medicine, and; Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Koumei Shirasuna
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Fumitake Usui
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Tadayoshi Karasawa
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Akira Kawashima
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Hiroaki Kimura
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Motoi Kobayashi
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Takanori Komada
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Yoshiyuki Inoue
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Naoko Mato
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Hideaki Yamasawa
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Eicke Latz
- the Institute of Innate Immunity, University Hospitals, University of Bonn, 53113 Bonn, Germany,; the Division of Infectious Diseases and Immunology, University of Massachusetts Medical School, Worcester, Massachusetts 01655
| | - Yoichiro Iwakura
- the Research Institute for Biomedical Science, Tokyo University of Science, Chiba 278-0022, Japan, and; the Medical Mycology Center, Chiba University, Chiba 260-8673, Japan
| | - Tadashi Kasahara
- From the Division of Inflammation Research, Center for Molecular Medicine, and
| | - Masashi Bando
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Yukihiko Sugiyama
- Division of Pulmonary Medicine, Department of Medicine, Jichi Medical University, Tochigi 329-0498, Japan
| | - Masafumi Takahashi
- From the Division of Inflammation Research, Center for Molecular Medicine, and.
| |
Collapse
|
38
|
Lingappan K, Srinivasan C, Jiang W, Wang L, Couroucli XI, Moorthy B. Analysis of the transcriptome in hyperoxic lung injury and sex-specific alterations in gene expression. PLoS One 2014; 9:e101581. [PMID: 25003466 PMCID: PMC4086819 DOI: 10.1371/journal.pone.0101581] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2014] [Accepted: 06/07/2014] [Indexed: 12/13/2022] Open
Abstract
Exposure to high concentration of oxygen (hyperoxia) leads to lung injury in experimental animal models and plays a role in the pathogenesis of diseases such as Acute Respiratory Distress Syndrome (ARDS) and Bronchopulmonary dysplasia (BPD) in humans. The mechanisms responsible for sex differences in the susceptibility towards hyperoxic lung injury remain largely unknown. The major goal of this study was to characterize the changes in the pulmonary transcriptome following hyperoxia exposure and further elucidate the sex-specific changes. Male and female (8-10 wk) wild type (WT) (C57BL/6J) mice were exposed to hyperoxia (FiO2>0.95) and gene expression in lung tissues was studied at 48 h. A combination of fold change ≥1.4 and false discovery rate (FDR)<5% was used to define differentially expressed genes (DEGs). Overrepresentation of gene ontology terms representing biological processes and signaling pathway impact analysis (SPIA) was performed. Comparison of DEG profiles identified 327 genes unique to females, 585 unique to males and 1882 common genes. The major new findings of this study are the identification of new candidate genes of interest and the sex-specific transcriptomic changes in hyperoxic lung injury. We also identified DEGs involved in signaling pathways like MAP kinase and NF-kappa B which may explain the differences in sex-specific susceptibility to hyperoxic lung injury. These findings highlight changes in the pulmonary transcriptome and sex-specific differences in hyperoxic lung injury, and suggest new pathways, whose components could serve as sex-specific biomarkers and possible therapeutic targets for acute lung injury (ALI)/acute respiratory distress (ARDS) in humans.
Collapse
Affiliation(s)
- Krithika Lingappan
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, United States of America
- * E-mail:
| | - Chandra Srinivasan
- Division of Pediatric Cardiology, Department of Pediatrics, University of Texas Medical School at Houston, Houston, Texas, United States of America
| | - Weiwu Jiang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, United States of America
| | - Lihua Wang
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, United States of America
| | - Xanthi I. Couroucli
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, United States of America
| | - Bhagavatula Moorthy
- Department of Pediatrics, Section of Neonatology, Texas Children's Hospital, Baylor College of Medicine, Houston, Texas, United States of America
| |
Collapse
|
39
|
Regal JF, Lawrence BP, Johnson AC, Lojovich SJ, O’Reilly MA. Neonatal oxygen exposure alters airway hyper-responsiveness but not the response to allergen challenge in adult mice. Pediatr Allergy Immunol 2014; 25:180-6. [PMID: 24520985 PMCID: PMC3976144 DOI: 10.1111/pai.12206] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/18/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Infants born prematurely are often treated with supplemental oxygen, which can increase their risk for airway hyper-responsiveness (AHR), asthma, reduced lung function, and altered responses to respiratory viral infections later in childhood. Likewise, exposure of newborn mice to hyperoxia alters baseline pulmonary mechanics and the host response to influenza A virus infection in adult mice. Here, we use this mouse model to test the hypothesis that neonatal hyperoxia also promotes AHR and exacerbated allergen-induced symptoms in adult mice. METHODS Baseline lung mechanics and AHR measured by methacholine provocation were assessed in adult male and female mice exposed to room air or 100% oxygen (hyperoxia) between post-natal days 0-4. AHR and lung inflammation were evaluated after adult female mice were sensitized with ovalbumin (OVA) plus alum and challenged with aerosolized OVA. RESULTS Baseline lung compliance increased and resistance decreased in adult female, but not male, mice exposed to neonatal hyperoxia compared with siblings exposed to room air. Neonatal hyperoxia significantly enhanced methacholine-induced AHR in female mice, but did not affect allergen-induced AHR to methacholine or lung inflammation. CONCLUSION Increased incidence of AHR and asthma is reported in children born prematurely and exposed to supplemental oxygen. Our findings in adult female mice exposed to hyperoxia as neonates suggest that this AHR reported in children born prematurely may reflect non-atopic wheezing due to intrinsic structural changes in airway development.
Collapse
Affiliation(s)
- Jean F. Regal
- Department of Biomedical Sciences University of Minnesota Medical School, Duluth, Minnesota, USA
| | - B. Paige Lawrence
- Department of Environmental Medicine, University of Rochester, Rochester, New York, USA
| | - Alex C. Johnson
- Department of Biomedical Sciences University of Minnesota Medical School, Duluth, Minnesota, USA
| | - Sarah J. Lojovich
- Department of Biomedical Sciences University of Minnesota Medical School, Duluth, Minnesota, USA
| | - Michael A. O’Reilly
- Department of Pediatrics School of Medicine and Dentistry, University of Rochester, Rochester, New York, USA
| |
Collapse
|