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Kuhar E, Chander N, Stewart DJ, Jahandideh F, Zhang H, Kristof AS, Bastarache JA, Schmidt EP, Taljaard M, Thebaud B, Engelberts D, Fergusson DA, Lalu MM. A preclinical systematic review and meta-analysis assessing the effect of biological sex in lipopolysaccharide-induced acute lung injury. Am J Physiol Lung Cell Mol Physiol 2024; 326:L661-L671. [PMID: 38349120 DOI: 10.1152/ajplung.00336.2023] [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: 11/06/2023] [Revised: 02/01/2024] [Accepted: 02/02/2024] [Indexed: 04/05/2024] Open
Abstract
It is unclear what effect biological sex has on outcomes of acute lung injury (ALI). Clinical studies are confounded by their observational design. We addressed this knowledge gap with a preclinical systematic review of ALI animal studies. We searched MEDLINE and Embase for studies of intratracheal/intranasal/aerosolized lipopolysaccharide administration (the most common ALI model) that reported sex-stratified data. Screening and data extraction were conducted in duplicate. Our primary outcome was histological tissue injury and secondary outcomes included alveolar-capillary barrier alterations and inflammatory markers. We used a random-effects inverse variance meta-analysis, expressing data as standardized mean difference (SMD) with 95% confidence intervals (CIs). Risk of bias was assessed using the Systematic Review Centre for Laboratory Animal Experimentation (SYRCLE) tool. We identified six studies involving 132 animals across 11 independent experiments. A total of 41 outcomes were extracted, with the direction of effect suggesting greater severity in males than females in 26/41 outcomes (63%). One study reported on lung histology and found that male mice exhibited greater injury than females (SMD: 1.61, 95% CI: 0.53-2.69). Meta-analysis demonstrated significantly elevated albumin levels (SMD: 2.17, 95% CI: 0.63-3.70) and total cell counts (SMD: 0.80, 95% CI: 0.27-1.33) in bronchoalveolar lavage fluid from male mice compared with female mice. Most studies had an "unclear risk of bias." Our findings suggest sex-related differences in ALI severity. However, these conclusions are drawn from a small number of animals and studies. Further research is required to address the fundamental issue of biological sex differences in LPS-induced ALI.
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Affiliation(s)
- Eva Kuhar
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Nikesh Chander
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Duncan J Stewart
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, The Ottawa Hospital and the Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Forough Jahandideh
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Haibo Zhang
- Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Unity Health Toronto, Toronto, Ontario, Canada
- Department of Anesthesiology and Pain Medicine, Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Arnold S Kristof
- Meakins-Christie Laboratories and Translational Research in Respiratory Diseases Program, Faculty of Medicine, Research Institute of the McGill University Health Centre, McGill University, Montreal, Quebec, Canada
| | - Julie A Bastarache
- Department of Allergy, Pulmonary, and Critical Care Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, United States
| | - Eric P Schmidt
- Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Monica Taljaard
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Bernard Thebaud
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Pediatrics, The Ottawa Hospital and the Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Doreen Engelberts
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Dean A Fergusson
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Department of Medicine, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Department of Surgery, University of Ottawa, Ottawa, Ontario, Canada
| | - Manoj M Lalu
- Clinical Epidemiology Program, Blueprint Translational Research Group, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario, Canada
- Regenerative Medicine Program, The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada
- Department of Anesthesiology and Pain Medicine, The Ottawa Hospital, University of Ottawa, Ottawa, Ontario, Canada
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Merdji H, Long MT, Ostermann M, Herridge M, Myatra SN, De Rosa S, Metaxa V, Kotfis K, Robba C, De Jong A, Helms J, Gebhard CE. Sex and gender differences in intensive care medicine. Intensive Care Med 2023; 49:1155-1167. [PMID: 37676504 PMCID: PMC10556182 DOI: 10.1007/s00134-023-07194-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/05/2023] [Indexed: 09/08/2023]
Abstract
Despite significant advancements in critical care medicine, limited attention has been given to sex and gender disparities in management and outcomes of patients admitted to the intensive care unit (ICU). While "sex" pertains to biological and physiological characteristics, such as reproductive organs, chromosomes and sex hormones, "gender" refers more to sociocultural roles and human behavior. Unfortunately, data on gender-related topics in the ICU are lacking. Consequently, data on sex and gender-related differences in admission to the ICU, clinical course, length of stay, mortality, and post-ICU burdens, are often inconsistent. Moreover, when examining specific diagnoses in the ICU, variations can be observed in epidemiology, pathophysiology, presentation, severity, and treatment response due to the distinct impact of sex hormones on the immune and cardiovascular systems. In this narrative review, we highlight the influence of sex and gender on the clinical course, management, and outcomes of the most encountered intensive care conditions, in addition to the potential co-existence of unconscious biases which may also impact critical illness. Diagnoses with a known sex predilection will be discussed within the context of underlying sex differences in physiology, anatomy, and pharmacology with the goal of identifying areas where clinical improvement is needed. To optimize patient care and outcomes, it is crucial to comprehend and address sex and gender differences in the ICU setting and personalize management accordingly to ensure equitable, patient-centered care. Future research should focus on elucidating the underlying mechanisms driving sex and gender disparities, as well as exploring targeted interventions to mitigate these disparities and improve outcomes for all critically ill patients.
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Affiliation(s)
- Hamid Merdji
- Intensive Care Unit, Department of Acute Medicine, University Hospital Basel, University of Basel, Petersgraben 4, 4031, Basel, Switzerland
| | - Micah T Long
- Departments of Anaesthesiology and Medicine, Division of Critical Care, University of Wisconsin Hospitals & Clinics, Madison, USA
| | - Marlies Ostermann
- Department of Critical Care, King's College London, Guy's & St Thomas' Hospital, London, UK
| | - Margaret Herridge
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, ON, Canada
- Toronto General Hospital Research Institute, University Health Network, University of Toronto, Toronto, ON, Canada
| | - Sheila N Myatra
- Department of Anaesthesiology, Critical Care and Pain, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, India
| | - Silvia De Rosa
- Centre for Medical Sciences - CISMed, University of Trento, Trento, Italy
- Department of Anesthesia and Intensive Care, Santa Chiara Regional Hospital, Trento, Italy
| | - Victoria Metaxa
- Department of Critical Care, King's College Hospital NHS Foundation Trust, London, UK
| | - Katarzyna Kotfis
- Department of Anaesthesiology, Intensive Therapy and Acute Intoxications, Pomeranian Medical University, Szczecin, Poland
| | - Chiara Robba
- Dipartimento di Scienze Chirurgiche Integrate e Diagnostiche, Università di Genova, Genova, Italy
- Anestesia e Rianimazione, IRCCS Policlinico San Martino, Genova, Italy
| | - Audrey De Jong
- Department of Anaesthesia and Intensive Care Unit, Regional University Hospital of Montpellier, St-Eloi Hospital, University of Montpellier, PhyMedExp, INSERM U1046, CNRS UMR, 9214, Montpellier, CEDEX 5, France
| | - Julie Helms
- Faculté de Médecine, Service de Médecine Intensive-Réanimation, Université de Strasbourg (UNISTRA)Hôpitaux Universitaires de StrasbourgNouvel Hôpital Civil, Strasbourg, France
- INSERM (French National Institute of Health and Medical Research), UMR 1260, Regenerative Nanomedicine (RNM), FMTS, Strasbourg, France
| | - Caroline E Gebhard
- Intensive Care Unit, Department of Acute Medicine, University Hospital Basel, University of Basel, Petersgraben 4, 4031, Basel, Switzerland.
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Yassin A, Sabsigh R, Al‐Zoubi RM, Aboumarzouk OM, Alwani M, Nettleship J, Kelly D. Testosterone and Covid-19: An update. Rev Med Virol 2023; 33:e2395. [PMID: 36056748 PMCID: PMC9537909 DOI: 10.1002/rmv.2395] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/23/2022] [Accepted: 08/25/2022] [Indexed: 01/28/2023]
Abstract
There is overwhelming evidence to suggest that male gender is at a higher risk of developing more severe Covid-19 disease and thus having poorer clinical outcomes. However, the relationship between testosterone (T) and Covid-19 remains unclear with both protective and deleterious effects on different aspects of the disease suggested. Here, we review the current epidemiological and biological evidence on the role of testosterone in the process of SARS-CoV-2 infection and in mediating Covid-19 severity, its potential to serve as a biomarker for risk stratification and discuss the possibility of T supplementation as a treatment or preventative therapy for Covid-19.
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Affiliation(s)
- Aksam Yassin
- Surgical Research SectionHamad Medical CorporationDohaQatar
- Center of Medicine and Health SciencesDresden International UniversityDresdenGermany
| | - Ridwan Sabsigh
- Department of SurgerySt. Barnabas HospitalBronxNew YorkUSA
- Department of UrologyCornell UniversityNew YorkNew YorkUSA
| | - Raed M. Al‐Zoubi
- Surgical Research SectionHamad Medical CorporationDohaQatar
- Department of ChemistryJordan University of Science and TechnologyIrbidJordan
| | - Omar M. Aboumarzouk
- Surgical Research SectionHamad Medical CorporationDohaQatar
- College of MedicineQatar UniversityDohaQatar
- College of MedicineUniversity of GlasgowGlasgowUK
| | - Mustafa Alwani
- Surgical Research SectionHamad Medical CorporationDohaQatar
| | - Joanne Nettleship
- Department of Oncology and MetabolismMedical SchoolUniversity of SheffieldSheffieldUK
| | - Daniel Kelly
- Department of Oncology and MetabolismMedical SchoolUniversity of SheffieldSheffieldUK
- Biomolecular Research CentreSheffield Hallam UniversitySheffieldUK
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Almuntashiri S, Jones TW, Wang X, Sikora A, Zhang D. Plasma TIMP-1 as a sex-specific biomarker for acute lung injury. Biol Sex Differ 2022; 13:70. [PMID: 36482481 PMCID: PMC9733313 DOI: 10.1186/s13293-022-00481-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) confers high morbidity and mortality, with a death rate reaching 40%. Pre-clinical and clinical studies have cited sex-specific sex hormones as a critical contributor to divergent immunologic responses. Therefore, exploration of sex and sex hormone roles following lung injury and ARDS development is needed. Tissue inhibitor of metalloproteinase-1 (TIMP-1) was the first-discovered natural collagenase inhibitor and is located exclusively on the X chromosome. This study aimed to evaluate the prognostic role of circulating TIMP-1, and if concentration differences between males and females correlate with the mortality of ARDS patients. METHODS Human plasma samples from 100 ARDS patients enrolled in Albuterol to Treat Acute Lung Injury (ALTA) trial on the day of randomization were evaluated. The amount of TIMP-1 was measured using an enzyme-linked immunoassay (ELISA). Area under the receiver operating characteristic (AUROC) was computed to assess the predictive power of TIMP-1 for 30 and 90-day mortality. Chi-squared tests and Kaplan-Meier curves were computed to assess different variables and survival. RESULTS AUROC analysis of TIMP-1 and 30-day mortality among females showed that TIMP-1 exhibited an AUC of 0.87 (95% confidence interval [CI] 0.78 to 0.97; P = 0.0014) with an optimal cut-off value of 159.7 ng/mL producing a 100% sensitivity and 74% specificity. For 90-day mortality, AUROC analysis showed an AUC of 0.82 (95% confidence interval [CI] 0.67 to 0.97; P = 0.0016) with a similar cut-off value producing a 90% sensitivity and 76.47% specificity. Stratifying subjects by TIMP-1 concentration as high (≥ 159.7 ng/mL) or low (< 159.7 ng/mL) indicated that high TIMP-1 was associated with increased 30 and 90-day mortality rates (all P < 0.0001). Lastly, high TIMP-1 group was associated with worse other outcomes including ventilator-free days (VFDs) and ICU-free days (all P < 0.05). CONCLUSION Circulating TIMP-1 appeared to be a promising biomarker for mortality among females with ARDS. The high TIMP-1 group showed worse VFDs and ICU-free days. Circulating TIMP-1 may be a sex-specific biomarker in the setting of ARDS and could improve ARDS phenotyping as well as provide a novel therapeutic target in females.
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Affiliation(s)
- Sultan Almuntashiri
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, 30912, USA.,Department of Clinical Pharmacy, College of Pharmacy, University of Hail, Hail, 55473, Saudi Arabia
| | - Timothy W Jones
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, 30912, USA
| | - Xiaoyun Wang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, 30912, USA
| | - Andrea Sikora
- Department of Clinical and Administrative Pharmacy, College of Pharmacy, University of Georgia, Augusta, GA, 30901, USA.,Department of Pharmacy, Augusta University Medical Center, Augusta, GA, 30912, USA
| | - Duo Zhang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood VA Medical Center, Augusta, GA, 30912, USA. .,Department of Medicine, Augusta University, Augusta, GA, 30912, USA.
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Latha K, Rao S, Sakamoto K, Watford WT. Tumor Progression Locus 2 Protects against Acute Respiratory Distress Syndrome in Influenza A Virus-Infected Mice. Microbiol Spectr 2022; 10:e0113622. [PMID: 35980186 PMCID: PMC9604045 DOI: 10.1128/spectrum.01136-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 06/16/2022] [Indexed: 12/30/2022] Open
Abstract
Excessive inflammation in patients with severe influenza disease may lead to acute lung injury that results in acute respiratory distress syndrome (ARDS). ARDS is associated with alveolar damage and pulmonary edema that severely impair gas exchange, leading to hypoxia. With no existing FDA-approved treatment for ARDS, it is important to understand the factors that lead to virus-induced ARDS development to improve prevention, diagnosis, and treatment. We have previously shown that mice deficient in the serine-threonine mitogen-activated protein kinase, Tpl2 (MAP3K8 or COT), succumb to infection with a typically low-pathogenicity strain of influenza A virus (IAV; HKX31, H3N2 [x31]). The goal of the current study was to evaluate influenza A virus-infected Tpl2-/- mice clinically and histopathologically to gain insight into the disease mechanism. We hypothesized that Tpl2-/- mice succumb to IAV infection due to development of ARDS-like disease and pulmonary dysfunction. We observed prominent signs of alveolar septal necrosis, hyaline membranes, pleuritis, edema, and higher lactate dehydrogenase (LDH) levels in the lungs of IAV-infected Tpl2-/- mice compared to wild-type (WT) mice from 7 to 9 days postinfection (dpi). Notably, WT mice showed signs of regenerating epithelium, indicative of repair and recovery, that were reduced in Tpl2-/- mice. Furthermore, biomarkers associated with human ARDS cases were upregulated in Tpl2-/- mice at 7 dpi, demonstrating an ARDS-like phenotype in Tpl2-/- mice in response to IAV infection. IMPORTANCE This study demonstrates the protective role of the serine-threonine mitogen-activated protein kinase, Tpl2, in influenza virus pathogenesis and reveals that host Tpl2 deficiency is sufficient to convert a low-pathogenicity influenza A virus infection into severe influenza disease that resembles ARDS, both histopathologically and transcriptionally. The IAV-infected Tpl2-/- mouse thereby represents a novel murine model for studying ARDS-like disease that could improve our understanding of this aggressive disease and assist in the design of better diagnostics and treatments.
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Affiliation(s)
- Krishna Latha
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Sanjana Rao
- Department of Genetics, University of Georgia, Athens, Georgia, USA
| | - Kaori Sakamoto
- Department of Pathology, University of Georgia, Athens, Georgia, USA
| | - Wendy T. Watford
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
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Hernandez L, Laucyte-Cibulskiene A, Ward LJ, Kautzky-Willer A, Herrero MT, Norris CM, Raparelli V, Pilote L, Stenvinkel P, Kublickiene K. Gender dimension in cardio-pulmonary continuum. Front Cardiovasc Med 2022; 9:916194. [PMID: 36003909 PMCID: PMC9393639 DOI: 10.3389/fcvm.2022.916194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/11/2022] [Indexed: 11/17/2022] Open
Abstract
Cardio-pulmonary diseases, which were once regarded as a man's illness, have been one of the leading causes of morbidity and mortality for both men and women in many countries in recent years. Both gender and sex influence the functional and structural changes in the human body and therefore play an important role in disease clinical manifestation, treatment choice, and/or response to treatment and prognosis of health outcomes. The gender dimension integrates sex and gender analysis in health sciences and medical research, however, it is still relatively overlooked suggesting the need for empowerment in the medical research community. Latest advances in the field of cardiovascular research have provided supportive evidence that the application of biological variables of sex has led to the understanding that heart disease in females may have different pathophysiology compared to males, particularly in younger adults. It has also resulted in new diagnostic techniques and a better understanding of symptomatology, while gender analysis has informed more appropriate risk stratification and prevention strategies. The existing knowledge in the pulmonary field shows the higher prevalence of pulmonary disorders among females, however, the role of gender as a socio-cultural construct has yet to be explored for the implementation of targeted interventions. The purpose of this review is to introduce the concept of gender dimension and its importance for the cardiopulmonary continuum with a focus on shared pathophysiology and disease presentation in addition to interrelation with chronic kidney disease. The review presents basic knowledge of what gender dimension means, and the application of sex and gender aspects in cardiovascular medicine with a specific focus on early pulmonary development, pulmonary hypertension, and chronic obstructive pulmonary disease (COPD). Early vascular aging and inflammation have been presented as a potential pathophysiological link, with further interactions between the cardiopulmonary continuum and chronic kidney disease. Finally, implications for potential future research have been provided to increase the impact of gender dimension on research excellence that would add value to everybody, foster toward precision medicine and ultimately improve human health.
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Affiliation(s)
- Leah Hernandez
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Agne Laucyte-Cibulskiene
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Nephrology, Lund University, Skåne University Hospital, Malmö, Sweden
| | - Liam J. Ward
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Alexandra Kautzky-Willer
- Division of Endocrinology and Metabolism, Department of Medicine III, Medical University of Vienna, Vienna, Austria
| | - Maria-Trinidad Herrero
- Clinical and Experimental Neuroscience, Institutes for Aging Research and Bio-Health Research of Murcia, School of Medicine, University of Murcia, Murcia, Spain
| | - Colleen M. Norris
- Faculty of Nursing, University of Alberta, Edmonton, AB, Canada
- Cardiovascular and Stroke Strategic Clinical Network, Alberta Health Services, Edmonton, AB, Canada
| | - Valeria Raparelli
- Faculty of Nursing, University of Alberta, Edmonton, AB, Canada
- Department of Translational Medicine, University of Ferrara, Ferrara, Italy
- University Center for Studies on Gender Medicine, University of Ferrara, Ferrara, Italy
| | - Louise Pilote
- Division of Clinical Epidemiology, Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada
| | - Peter Stenvinkel
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
| | - Karolina Kublickiene
- Division of Renal Medicine, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden
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Twitchell DK, Christensen MB, Hackett G, Morgentaler A, Saad F, Pastuszak AW. Examining Male Predominance of Severe COVID-19 Outcomes: A Systematic Review. ANDROGENS: CLINICAL RESEARCH AND THERAPEUTICS 2022; 3:41-53. [PMID: 36199281 PMCID: PMC9527649 DOI: 10.1089/andro.2022.0006] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 06/13/2022] [Indexed: 05/26/2023]
Abstract
Although not universal, many epidemiological data sources signal that a higher proportion of males than females with confirmed Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infections have adverse outcomes, such as intensive care unit (ICU) admission and death. Though likely multifactorial, the various hypotheses that have been proposed as underlying factors behind this trend are related to greater smoking prevalence among males, testosterone (T) deficiency causing an inflammatory storm, androgen-driven pathogenesis of SARS-CoV-2, a protective effect of estrogen in females, and inborn errors of cytokine immunity. This review aims at examining the evidence and at assessing the likelihood that the factors being investigated are contributory to the reported trend of male predominance of severe COVID-19 cases. Sources were obtained using the PubMed database and were selected based on their relevance to one of the primary hypotheses attempting to explain the strong male sex bias of severe SARS-CoV-2 infections. Emphasis was placed on meta-analyses and population-based studies. Sources are current through February 22, 2022. A severe COVID-19 case or outcome is defined in this review as a progression of the SARS-CoV-2 virus that results in either admission to an ICU for management of symptoms and clinical stabilization or which leads to death. Although the trend of male predominance of severe COVID-19 cases is likely multifactorial, the hypothesis of T deficiency causing an inflammatory storm has support from many studies with limited conflicting evidence. An inborn error in cytokine immunity is also well supported, but it needs more studies to add support to the hypothesis. The immunologic protective effect of estrogen is supported by multiple studies, but it also has conflicting evidence. It appears less likely that the trend is caused solely by an increased prevalence of smoking among males or an androgen-driven pathogenesis, based on the extent of conflicting evidence.
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Affiliation(s)
| | - Michael B. Christensen
- Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, USA
| | - Geoffrey Hackett
- Department of Men's Health, Little Aston Hospital, Sutton Coldfield, United Kingdom
| | - Abraham Morgentaler
- Division of Urology, Department of Surgery, Harvard Medical School, Boston, Massachusetts, USA
| | - Farid Saad
- Department of Men's Health Research, Gulf Medical University, Ajman, UAE
| | - Alexander W. Pastuszak
- Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Kautzky-Willer A, Kaleta M, Lindner SD, Leutner M, Thurner S, Klimek P. Sex Differences in Clinical Characteristics and Outcomes of Patients with SARS-CoV-2-Infection Admitted to Intensive Care Units in Austria. J Pers Med 2022; 12:517. [PMID: 35455633 PMCID: PMC9026885 DOI: 10.3390/jpm12040517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 02/04/2023] Open
Abstract
IMPORTANCE A male predominance is reported in hospitalised patients with COVID-19 alongside a higher mortality rate in men compared to women. OBJECTIVE To assess if the reported sex bias in the COVID-19 pandemic is validated by analysis of a subset of patients with severe disease. DESIGN A nationwide retrospective cohort study was performed using the Austrian National COVID Database. We performed a sex-specific Lasso regression to select the covariates best explaining the outcomes of mechanical ventilation and death using variables known before ICU admission. We use logistic regression to construct a sex-specific "risk score" for the outcomes using these variables. SETTING We studied the characteristics and outcomes of patients admitted to intensive care units (ICUs) in Austria. PARTICIPANTS 5118 patients admitted to the ICU in Austria with a COVID-19 diagnosis in 03/2020-03/2021. EXPOSURES Demographic and clinical characteristics, vital signs and laboratory tests, comorbidities, and management of patients admitted to ICUs were analysed for possible sex differences. MAIN OUTCOMES AND MEASURES The aim was to define risk scores for mechanical ventilation and mortality for each sex to provide better sex-sensitive management and outcomes in the future. RESULTS We found balanced accuracies between 55% and 65% to predict the outcomes. Regarding outcome death, we found that the risk score for pre-ICU variables increases with age, renal insufficiency (f: OR 1.7(2), m: 1.9(2)) and decreases with observance as admission cause (f: OR 0.33(5), m: 0.36(5)). Additionally, the risk score for females also includes respiratory insufficiency (OR 2.4(4)) while heart failure for males only (OR 1.5(1)). CONCLUSIONS AND RELEVANCE Better knowledge of how sex influences COVID-19 outcomes at ICUs will have important implications for the ongoing pandemic's clinical care and management strategies. Identifying sex-specific features in individuals with COVID-19 and fatal consequences might inform preventive strategies and public health services.
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Affiliation(s)
- Alexandra Kautzky-Willer
- Department of Internal Medicine III, Clinical Division of Endocrinology and Metabolism, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria; (A.K.-W.); (M.L.)
- Gender Institute, A-3571 Gars am Kamp, Austria
| | - Michaela Kaleta
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, A-1090 Vienna, Austria; (M.K.); (S.D.L.); (S.T.)
- Complexity Science Hub Vienna, Josefstädter Strasse 39, A-1080 Vienna, Austria
| | - Simon D. Lindner
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, A-1090 Vienna, Austria; (M.K.); (S.D.L.); (S.T.)
- Complexity Science Hub Vienna, Josefstädter Strasse 39, A-1080 Vienna, Austria
| | - Michael Leutner
- Department of Internal Medicine III, Clinical Division of Endocrinology and Metabolism, Medical University of Vienna, Währinger Gürtel 18-20, A-1090 Vienna, Austria; (A.K.-W.); (M.L.)
| | - Stefan Thurner
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, A-1090 Vienna, Austria; (M.K.); (S.D.L.); (S.T.)
- Complexity Science Hub Vienna, Josefstädter Strasse 39, A-1080 Vienna, Austria
- Santa Fe Institute, 1399 Hyde Park Road, Santa Fe, NM 85701, USA
| | - Peter Klimek
- Section for Science of Complex Systems, CeMSIIS, Medical University of Vienna, Spitalgasse 23, A-1090 Vienna, Austria; (M.K.); (S.D.L.); (S.T.)
- Complexity Science Hub Vienna, Josefstädter Strasse 39, A-1080 Vienna, Austria
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Sultan M, Wilson K, Abdulla OA, Busbee PB, Hall A, Carter T, Singh N, Chatterjee S, Nagarkatti P, Nagarkatti M. Endocannabinoid Anandamide Attenuates Acute Respiratory Distress Syndrome through Modulation of Microbiome in the Gut-Lung Axis. Cells 2021; 10:3305. [PMID: 34943813 PMCID: PMC8699344 DOI: 10.3390/cells10123305] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 11/08/2021] [Accepted: 11/17/2021] [Indexed: 02/07/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a serious lung condition characterized by severe hypoxemia leading to limitations of oxygen needed for lung function. In this study, we investigated the effect of anandamide (AEA), an endogenous cannabinoid, on Staphylococcal enterotoxin B (SEB)-mediated ARDS in female mice. Single-cell RNA sequencing data showed that the lung epithelial cells from AEA-treated mice showed increased levels of antimicrobial peptides (AMPs) and tight junction proteins. MiSeq sequencing data on 16S RNA and LEfSe analysis demonstrated that SEB caused significant alterations in the microbiota, with increases in pathogenic bacteria in both the lungs and the gut, while treatment with AEA reversed this effect and induced beneficial bacteria. AEA treatment suppressed inflammation both in the lungs as well as gut-associated mesenteric lymph nodes (MLNs). AEA triggered several bacterial species that produced increased levels of short-chain fatty acids (SCFAs), including butyrate. Furthermore, administration of butyrate alone could attenuate SEB-mediated ARDS. Taken together, our data indicate that AEA treatment attenuates SEB-mediated ARDS by suppressing inflammation and preventing dysbiosis, both in the lungs and the gut, through the induction of AMPs, tight junction proteins, and SCFAs that stabilize the gut-lung microbial axis driving immune homeostasis.
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Affiliation(s)
- Muthanna Sultan
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Kiesha Wilson
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Osama A. Abdulla
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Philip Brandon Busbee
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Alina Hall
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Taylor Carter
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Narendra Singh
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Saurabh Chatterjee
- Environmental Health and Disease Laboratory, Arnold School of Public Health, University of South Carolina, Columbia, SC 29208, USA;
| | - Prakash Nagarkatti
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
| | - Mitzi Nagarkatti
- Department of Pathology, Microbiology and Immunology, School of Medicine, University of South Carolina School of Medicine, Columbia, SC 29209, USA; (M.S.); (K.W.); (O.A.A.); (P.B.B.); (A.H.); (T.C.); (N.S.); (P.N.)
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10
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Tran A, Fernando SM, Brochard LJ, Fan E, Inaba K, Ferguson ND, Calfee CS, Burns KEA, Brodie D, McCredie VA, Kim DY, Kyeremanteng K, Lampron J, Slutsky AS, Combes A, Rochwerg B. Prognostic factors for development of acute respiratory distress syndrome following traumatic injury - a systematic review and meta-analysis. Eur Respir J 2021; 59:13993003.00857-2021. [PMID: 34625477 DOI: 10.1183/13993003.00857-2021] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 08/17/2021] [Indexed: 11/05/2022]
Abstract
PURPOSE To summarise the prognostic associations between various clinical risk factors and the development of the acute respiratory distress syndrome (ARDS) following traumatic injury. METHODS We conducted this review in accordance with the PRISMA and CHARMS guidelines. We searched six databases from inception through December 2020. We included English language studies describing the clinical risk factors associated with the development of post-traumatic ARDS, as defined by either the American-European Consensus Conference or the Berlin definition. We pooled adjusted odds ratios for prognostic factors using the random effects method. We assessed risk of bias using the QUIPS tool and certainty of findings using GRADE methodology. RESULTS We included 39 studies involving 5 350 927 patients. We identified the amount of crystalloid resuscitation as a potentially modifiable prognostic factor associated with the development of post-traumatic ARDS (adjusted odds ratio [aOR] 1.19 for each additional liter of crystalloid administered within first 6 h after injury, 95% CI 1.15 to 1.24, high certainty). Non-modifiable prognostic factors with a moderate or high certainty of association with post-traumatic ARDS included increasing age, non-Hispanic white race, blunt mechanism of injury, presence of head injury, pulmonary contusion, or rib fracture; and increasing chest injury severity. CONCLUSION We identified one important modifiable factor, the amount of crystalloid resuscitation within the first 24 h of injury, and several non-modifiable factors associated with development of post-traumatic ARDS. This information should support the judicious use of crystalloid resuscitation in trauma patients and may inform the development of a risk-stratification tools.
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Affiliation(s)
- Alexandre Tran
- Department of Surgery, University of Ottawa, Ottawa, ON, Canada .,School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada.,Division of Critical Care, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Shannon M Fernando
- Division of Critical Care, Department of Medicine, University of Ottawa, Ottawa, ON, Canada.,Department of Emergency Medicine, University of Ottawa, Ottawa, ON, Canada
| | - Laurent J Brochard
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Eddy Fan
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Kenji Inaba
- Division of Acute Care Surgery, Department of Surgery, University of Southern California, Los Angeles, CA, USA
| | - Niall D Ferguson
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada.,Toronto General Hospital Research Institute, University Health Network, Toronto, ON, Canada
| | - Carolyn S Calfee
- Division of Pulmonary, Critical Care, Allergy and Sleep Medicine, University of California San Francisco, San Francisco, CA, USA
| | - Karen E A Burns
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada.,Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada
| | - Daniel Brodie
- Division of Pulmonary, Allergy, and Critical Care Medicine, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, NY, USA.,Center for Acute Respiratory Failure, New York-Presbyterian Hospital, New York, NY, USA
| | - Victoria A McCredie
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Krembil Research Institute, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
| | - Dennis Y Kim
- Department of Surgery, University of California Los Angeles, Los Angeles, CA, USA
| | - Kwadwo Kyeremanteng
- Division of Critical Care, Department of Medicine, University of Ottawa, Ottawa, ON, Canada
| | | | - Arthur S Slutsky
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada.,Keenan Research Centre for Biomedical Science, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Alain Combes
- Institute of Cardiometabolism and Nutrition, Sorbonne Université, INSERM Unite Mixte de Recherche (UMRS) 1166, Paris, France.,Service de Médecine Intensive-Réanimation, Institut de Cardiologie, Assistance Publique-Hôpitaux de Paris (APHP), Hôpital Pitié-Salpêtrière, Paris, France
| | - Bram Rochwerg
- Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.,Department of Medicine, Division of Critical Care, McMaster University, Hamilton, ON, Canada
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11
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COVID-19 and male reproductive system: pathogenic features and possible mechanisms. J Mol Histol 2021; 52:869-878. [PMID: 34232425 PMCID: PMC8260577 DOI: 10.1007/s10735-021-10003-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 06/28/2021] [Indexed: 12/30/2022]
Abstract
Multiorgan dysfunction is the main characteristic of severe COVID-19 patients and the involvement of male reproductive system may occur among these patients. Although there is a limited evidence to confirm the orchitis and virus presence in the semen of patients, there are concerns about the transmission of virus through the semen. In addition, reduced fertility or infertility can be seen as consequences of severe COVID-19 in recovered subjects. In this study, we aimed to review articles related to COVID-19 and male reproductive system to find the possible underlying mechanisms of SARS-CoV-2 in affecting male fertility. The following keywords of SARS-CoV-2, COVID-19, testis, orchitis, semen, angiotensin-converting enzyme 2 (ACE2), hypothalamic-pituitary-testicular (HPT) axis, Hypothalamus, etc., were defined to find the related publications from standard search engines, e.g., PUBMED, SCOPUS, Google Scholar. According to studies, COVID-19 occurs in severe patients as respiratory disease, along with multi-organ failure. The most important mechanisms are classified as direct and indirect pathogenesis of SARS-CoV-2. The presence of ACE2 on the cell surface of various cells in testis increases the risk of direct infection by this virus. SARS-CoV-2 also affects the testis through the cytokine storm. In addition, the important role of HPT axis dysregulation through impaired Leydig cells and hypothalamus should be considered. Using antiviral and immunomodulatory therapy can be harmful for testis function. Further investigations are required to investigate potential mechanisms of male infertility in survivals of COVID-19. Since involvement of testis is essential for fertility, increasing the knowledge of health system may improve the outcomes.
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12
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Dhindsa S, Zhang N, McPhaul MJ, Wu Z, Ghoshal AK, Erlich EC, Mani K, Randolph GJ, Edwards JR, Mudd PA, Diwan A. Association of Circulating Sex Hormones With Inflammation and Disease Severity in Patients With COVID-19. JAMA Netw Open 2021; 4:e2111398. [PMID: 34032853 PMCID: PMC8150664 DOI: 10.1001/jamanetworkopen.2021.11398] [Citation(s) in RCA: 103] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/31/2021] [Indexed: 12/14/2022] Open
Abstract
Importance Male sex is a risk factor for developing severe COVID-19 illness. It is not known whether sex hormones contribute to this predisposition. Objective To investigate the association of concentrations of serum testosterone, estradiol, and insulinlike growth factor 1 (IGF-1, concentrations of which are regulated by sex hormone signaling) with COVID-19 severity. Design, Setting, and Participants This prospective cohort study was conducted using serum samples collected from consecutive patients who presented from March through May 2020 to the Barnes Jewish Hospital in St Louis, Missouri, with COVID-19 (diagnosed using nasopharyngeal swabs). Exposures Testosterone, estradiol, and IGF-1 concentrations were measured at the time of presentation (ie, day 0) and at days 3, 7, 14, and 28 after admission (if the patient remained hospitalized). Main Outcomes and Measures Baseline hormone concentrations were compared among patients who had severe COVID-19 vs those with milder COVID-19 illness. RNA sequencing was performed on circulating mononuclear cells to understand the mechanistic association of altered circulating hormone concentrations with cellular signaling pathways. Results Among 152 patients (90 [59.2%] men; 62 [40.8%] women; mean [SD] age, 63 [16] years), 143 patients (94.1%) were hospitalized. Among 66 men with severe COVID-19, median [interquartile range] testosterone concentrations were lower at day 0 (53 [18 to 114] ng/dL vs 151 [95 to 217] ng/dL; P = .01) and day 3 (19 [6 to 68] ng/dL vs 111 [49 to 274] ng/dL; P = .006) compared with 24 men with milder disease. Testosterone concentrations were inversely associated with concentrations of interleukin 6 (β = -0.43; 95% CI, -0.52 to -0.17; P < .001), C-reactive protein (β = -0.38; 95% CI, -0.78 to -0.16; P = .004), interleukin 1 receptor antagonist (β = -0.29; 95% CI, -0.64 to -0.06; P = .02), hepatocyte growth factor (β = -0.46; 95% CI, -0.69 to -0.25; P < .001), and interferon γ-inducible protein 10 (β = -0.32; 95% CI, -0.62 to -0.10; P = .007). Estradiol and IGF-1 concentrations were not associated with COVID-19 severity in men. Testosterone, estradiol, and IGF-1 concentrations were similar in women with and without severe COVID-19. Gene set enrichment analysis revealed upregulated hormone signaling pathways in CD14+CD16- (ie, classical) monocytes and CD14-CD16+ (ie, nonclassical) monocytes in male patients with COVID-19 who needed intensive care unit treatment vs those who did not. Conclusions and Relevance In this single-center cohort study of patients with COVID-19, lower testosterone concentrations during hospitalization were associated with increased disease severity and inflammation in men. Hormone signaling pathways in monocytes did not parallel serum hormone concentrations, and further investigation is required to understand their pathophysiologic association with COVID-19.
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Affiliation(s)
- Sandeep Dhindsa
- Division of Endocrinology, Diabetes and Metabolism, St Louis University School of Medicine, St Louis, Missouri
| | - Nan Zhang
- Department of Pathology and Immunology, Washington University School of Medicine in St Louis, Missouri
| | - Michael J. McPhaul
- Endocrine Division, Quest Diagnostics Nichols Institute, San Juan Capistrano, California
| | - Zengru Wu
- Endocrine Division, Quest Diagnostics Nichols Institute, San Juan Capistrano, California
| | - Amit K. Ghoshal
- LC-MS Core Lab, Quest Diagnostics Nichols Institute, Valencia, California
| | - Emma C. Erlich
- Department of Pathology and Immunology, Washington University School of Medicine in St Louis, Missouri
| | - Kartik Mani
- Cardiovascular Division, Washington University School of Medicine in St Louis, Missouri
- Center for Cardiovascular Research, Department of Medicine, Washington University School of Medicine in St Louis, Missouri
- John Cochran Veterans Hospital, St Louis, Missouri
| | - Gwendalyn J. Randolph
- Department of Pathology and Immunology, Washington University School of Medicine in St Louis, Missouri
| | - John R. Edwards
- Center for Pharmacogenomics, Department of Medicine, Washington University School of Medicine in St Louis, Missouri
| | - Philip A. Mudd
- Department of Emergency Medicine, Washington University School of Medicine in St Louis, Missouri
| | - Abhinav Diwan
- Cardiovascular Division, Washington University School of Medicine in St Louis, Missouri
- Center for Cardiovascular Research, Department of Medicine, Washington University School of Medicine in St Louis, Missouri
- John Cochran Veterans Hospital, St Louis, Missouri
- Department of Cell Biology and Physiology, Washington University School of Medicine in St Louis, Missouri
- Department of Obstetrics and Gynecology, Washington University School of Medicine in St Louis, Missouri
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13
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Tiba MH, McCracken BM, Leander DC, Colmenero CI, Nemzek JA, Sjoding MW, Konopka KE, Flott TL, VanEpps JS, Daniels RC, Ward KR, Stringer KA, Dickson RP. A novel swine model of the acute respiratory distress syndrome using clinically relevant injury exposures. Physiol Rep 2021; 9:e14871. [PMID: 33991456 PMCID: PMC8123544 DOI: 10.14814/phy2.14871] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 04/17/2021] [Indexed: 12/18/2022] Open
Abstract
To date, existing animal models of the acute respiratory distress syndrome (ARDS) have failed to translate preclinical discoveries into effective pharmacotherapy or diagnostic biomarkers. To address this translational gap, we developed a high-fidelity swine model of ARDS utilizing clinically relevant lung injury exposures. Fourteen male swine were anesthetized, mechanically ventilated, and surgically instrumented for hemodynamic monitoring, blood, and tissue sampling. Animals were allocated to one of three groups: (1) Indirect lung injury only: animals were inoculated by direct injection of Escherichia coli into the kidney parenchyma, provoking systemic inflammation and distributive shock physiology; (2) Direct lung injury only: animals received volutrauma, hyperoxia, and bronchoscope-delivered gastric particles; (3) Combined indirect and direct lung injury: animals were administered both above-described indirect and direct lung injury exposures. Animals were monitored for up to 12 h, with serial collection of physiologic data, blood samples, and radiographic imaging. Lung tissue was acquired postmortem for pathological examination. In contrast to indirect lung injury only and direct lung injury only groups, animals in the combined indirect and direct lung injury group exhibited all of the physiological, radiographic, and histopathologic hallmarks of human ARDS: impaired gas exchange (mean PaO2 /FiO2 ratio 124.8 ± 63.8), diffuse bilateral opacities on chest radiographs, and extensive pathologic evidence of diffuse alveolar damage. Our novel porcine model of ARDS, built on clinically relevant lung injury exposures, faithfully recapitulates the physiologic, radiographic, and histopathologic features of human ARDS and fills a crucial gap in the translational study of human lung injury.
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Affiliation(s)
- Mohamad H. Tiba
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
| | - Brendan M. McCracken
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
| | - Danielle C. Leander
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
| | - Carmen I. Colmenero
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
| | - Jean A. Nemzek
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Unit of Laboratory Animal MedicineUniversity of MichiganAnn ArborMIUSA
| | - Michael W. Sjoding
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Division of Pulmonary and Critical Care MedicineDepartment of Internal MedicineUniversity of MichiganAnn ArborMIUSA
- Institute for Healthcare Policy and InnovationUniversity of MichiganAnn ArborMIUSA
- Department of Computational Medicine and BioinformaticsUniversity of MichiganAnn ArborMIUSA
| | - Kristine E. Konopka
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Department of PathologyUniversity of MichiganAnn ArborMIUSA
| | - Thomas L. Flott
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Department of Clinical PharmacyCollege of PharmacyUniversity of MichiganAnn ArborMIUSA
| | - J. Scott VanEpps
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMIUSA
- Biointerfaces InstituteUniversity of MichiganAnn ArborMIUSA
| | - Rodney C. Daniels
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMIUSA
- Department of PediatricsPediatric Critical Care MedicineUniversity of MichiganAnn ArborMIUSA
| | - Kevin R. Ward
- Department of Emergency MedicineUniversity of MichiganAnn ArborMIUSA
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Department of Biomedical EngineeringUniversity of MichiganAnn ArborMIUSA
| | - Kathleen A. Stringer
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Division of Pulmonary and Critical Care MedicineDepartment of Internal MedicineUniversity of MichiganAnn ArborMIUSA
- Department of Clinical PharmacyCollege of PharmacyUniversity of MichiganAnn ArborMIUSA
| | - Robert P. Dickson
- Michigan Center for Integrative Research in Critical CareUniversity of MichiganAnn ArborMIUSA
- Division of Pulmonary and Critical Care MedicineDepartment of Internal MedicineUniversity of MichiganAnn ArborMIUSA
- Department of Microbiology & ImmunologyUniversity of MichiganAnn ArborMIUSA
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14
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Torres LK, Hoffman KL, Oromendia C, Diaz I, Harrington JS, Schenck EJ, Price DR, Gomez-Escobar L, Higuera A, Vera MP, Baron RM, Fredenburgh LE, Huh JW, Choi AMK, Siempos II. Attributable mortality of acute respiratory distress syndrome: a systematic review, meta-analysis and survival analysis using targeted minimum loss-based estimation. Thorax 2021; 76:1176-1185. [PMID: 33863829 DOI: 10.1136/thoraxjnl-2020-215950] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 03/15/2021] [Accepted: 03/24/2021] [Indexed: 01/01/2023]
Abstract
BACKGROUND Although acute respiratory distress syndrome (ARDS) is associated with high mortality, its direct causal link with death is unclear. Clarifying this link is important to justify costly research on prevention of ARDS. OBJECTIVE To estimate the attributable mortality, if any, of ARDS. DESIGN First, we performed a systematic review and meta-analysis of observational studies reporting mortality of critically ill patients with and without ARDS matched for underlying risk factor. Next, we conducted a survival analysis of prospectively collected patient-level data from subjects enrolled in three intensive care unit (ICU) cohorts to estimate the attributable mortality of critically ill septic patients with and without ARDS using a novel causal inference method. RESULTS In the meta-analysis, 44 studies (47 cohorts) involving 56 081 critically ill patients were included. Mortality was higher in patients with versus without ARDS (risk ratio 2.48, 95% CI 1.86 to 3.30; p<0.001) with a numerically stronger association between ARDS and mortality in trauma than sepsis. In the survival analysis of three ICU cohorts enrolling 1203 critically ill patients, 658 septic patients were included. After controlling for confounders, ARDS was found to increase the mortality rate by 15% (95% CI 3% to 26%; p=0.015). Significant increases in mortality were seen for severe (23%, 95% CI 3% to 44%; p=0.028) and moderate (16%, 95% CI 2% to 31%; p=0.031), but not for mild ARDS. CONCLUSIONS ARDS has a direct causal link with mortality. Our findings provide information about the extent to which continued funding of ARDS prevention trials has potential to impart survival benefit. PROSPERO REGISTRATION NUMBER CRD42017078313.
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Affiliation(s)
- Lisa K Torres
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - Katherine L Hoffman
- Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, New York, USA
| | - Clara Oromendia
- Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, New York, USA
| | - Ivan Diaz
- Department of Healthcare Policy and Research, Weill Cornell Medicine, New York, New York, USA
| | - John S Harrington
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - Edward J Schenck
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - David R Price
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - Luis Gomez-Escobar
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - Angelica Higuera
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Mayra Pinilla Vera
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Rebecca M Baron
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Laura E Fredenburgh
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Jin-Won Huh
- Department of Pulmonary and Critical Care Medicine, Asan Medical Center/University of Ulsan College of Medicine, Seoul, South Korea
| | - Augustine M K Choi
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA
| | - Ilias I Siempos
- Department of Medicine, Division of Pulmonary and Critical Care Medicine, NewYork-Presbyterian Hospital/Weill Cornell Medical Center, New York, New York, USA .,First Department of Critical Care Medicine and Pulmonary Services, Evangelismos Athens General Hospital/National and Kapodistrian University of Athens Medical School, Athens, Greece
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15
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Concentrated Secretome of Adipose Stromal Cells Limits Influenza A Virus-Induced Lung Injury in Mice. Cells 2021; 10:cells10040720. [PMID: 33804896 PMCID: PMC8063825 DOI: 10.3390/cells10040720] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 12/17/2022] Open
Abstract
Despite vaccination and antivirals, influenza remains a communicable disease of high burden, with limited therapeutic options available to patients that develop complications. Here, we report the development and preclinical characterization of Adipose Stromal Cell (ASC) concentrated secretome (CS), generated by process adaptable to current Good Manufacturing Practices (cGMP) standards. We demonstrate that ASC-CS limits pulmonary histopathological changes, infiltration of inflammatory cells, protein leak, water accumulation, and arterial oxygen saturation (spO2) reduction in murine model of lung infection with influenza A virus (IAV) when first administered six days post-infection. The ability to limit lung injury is sustained in ASC-CS preparations stored at −80 °C for three years. Priming of the ASC with inflammatory factors TNFα and IFNγ enhances ASC-CS ability to suppress lung injury. IAV infection is associated with dramatic increases in programmed cell death ligand (PDL1) and angiopoietin 2 (Angpt2) levels. ASC-CS application significantly reduces both PDL1 and Angpt2 levels. Neutralization of PDL1 with anti-mouse PDL1 antibody starting Day6 onward effectively ablates lung PDL1, but only non-significantly reduces Angpt2 release. Most importantly, late-phase PDL1 neutralization results in negligible suppression of protein leakage and inflammatory cell infiltration, suggesting that suppression of PDL1 does not play a critical role in ASC-CS therapeutic effects.
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16
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Papadopoulos V, Li L, Samplaski M. Why does COVID-19 kill more elderly men than women? Is there a role for testosterone? Andrology 2020; 9:65-72. [PMID: 32681716 PMCID: PMC7404939 DOI: 10.1111/andr.12868] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 07/08/2020] [Accepted: 07/13/2020] [Indexed: 01/08/2023]
Abstract
Background Recent epidemiological data indicate that there may be a gender predisposition to COVID‐19, with men predisposed to being most severely affected, and older men accounting for most deaths. Objectives Provide a review of the research literature, propose hypotheses, and therapies based on the potential link between testosterone (T) and COVID‐19 induced mortality in elderly men. Materials and Methods A search of publications in academic electronic databases, and government and public health organization web sites on T, aging, inflammation, severe acute respiratory syndrome (SARS) due to coronavirus (CoV) 2 (SARS‐CoV‐2) infection, and COVID‐19 disease state and outcomes was performed. Results The link between T, the immune system, and male aging is well‐established, as is the progressive decline in T levels with aging. In women, T levels drop before menopause and variably increase with advanced age. Elevated IL‐6 is a characteristic biomarker of patients infected with COVID‐19 and has been linked to the development of the acute respiratory distress syndrome (ARDS). Thus far, half of the admitted COVID‐19 patients developed ARDS, half of these patients died, and elderly male patients have been more likely to develop ARDS and die. Low T is associated with ARDS. These data suggest that low T levels may exacerbate the severity of COVID‐19 infection in elderly men. It may also stand to reason that normal T levels may offer some protection against COVID‐19. SARS‐CoV‐2 binds to the angiotensin‐converting enzyme 2, present in high levels in the testis. Conclusion At present, it is not known whether low T levels in aging hypogonadal males create a permissive environment for severe responses to COVID‐19 infection or if the virus inhibits androgen formation. Given the preponderance of COVID‐19 related mortality in elderly males, additional testing for gonadal function and treatment with T may be merited.
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Affiliation(s)
- Vassilios Papadopoulos
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Lu Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - Mary Samplaski
- Keck School of Medicine, Institute of Urology, University of Southern California, Los Angeles, CA, USA
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Abstract
A male bias in mortality has emerged in the COVID-19 pandemic, which is consistent with the pathogenesis of other viral infections. Biological sex differences may manifest themselves in susceptibility to infection, early pathogenesis, innate viral control, adaptive immune responses or the balance of inflammation and tissue repair in the resolution of infection. We discuss available sex-disaggregated epidemiological data from the COVID-19 pandemic, introduce sex-differential features of immunity and highlight potential sex differences underlying COVID-19 severity. We propose that sex differences in immunopathogenesis will inform mechanisms of COVID-19, identify points for therapeutic intervention and improve vaccine design and increase vaccine efficacy. Why are males more susceptible to severe COVID-19 than females? In this Perspective, Sabra Klein and colleagues consider the sex differences in the immune system that may contribute to this sex bias.
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18
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McNicholas BA, Madotto F, Pham T, Rezoagli E, Masterson CH, Horie S, Bellani G, Brochard L, Laffey JG. Demographics, management and outcome of females and males with acute respiratory distress syndrome in the LUNG SAFE prospective cohort study. Eur Respir J 2019; 54:13993003.00609-2019. [DOI: 10.1183/13993003.00609-2019] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 07/04/2019] [Indexed: 02/06/2023]
Abstract
RationaleWe wished to determine the influence of sex on the management and outcomes in acute respiratory distress syndrome (ARDS) patients in the Large Observational Study to Understand the Global Impact of Severe Acute Respiratory Failure (LUNG SAFE).MethodsWe assessed the effect of sex on mortality, intensive care unit and hospital length of stay, and duration of invasive mechanical ventilation (IMV) in patients with ARDS who underwent IMV, adjusting for plausible clinical and geographic confounders.FindingsOf 2377 patients with ARDS, 905 (38%) were female and 1472 (62%) were male. There were no sex differences in clinician recognition of ARDS or critical illness severity profile. Females received higher tidal volumes (8.2±2.1 versus 7.2±1.6 mL·kg−1; p<0.0001) and higher plateau and driving pressures compared with males. Lower tidal volume ventilation was received by 50% of females compared with 74% of males (p<0.0001). In shorter patients (height ≤1.69 m), females were significantly less likely to receive lower tidal volumes. Surviving females had a shorter duration of IMV and reduced length of stay compared with males. Overall hospital mortality was similar in females (40.2%) versus males (40.2%). However, female sex was associated with higher mortality in patients with severe confirmed ARDS (OR for sex (male versus female) 0.35, 95% CI 0.14–0.83).ConclusionsShorter females with ARDS are less likely to receive lower tidal volume ventilation, while females with severe confirmed ARDS have a higher mortality risk. These data highlight the need for better ventilatory management in females to improve their outcomes from ARDS.
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Caldarone L, Mariscal A, Sage A, Khan M, Juvet S, Martinu T, Zamel R, Cypel M, Liu M, Palaniyar N, Keshavjee S. Neutrophil extracellular traps in ex vivo lung perfusion perfusate predict the clinical outcome of lung transplant recipients. Eur Respir J 2019; 53:13993003.01736-2018. [PMID: 30655281 DOI: 10.1183/13993003.01736-2018] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Accepted: 12/20/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Lindsay Caldarone
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Andrea Mariscal
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
| | - Andrew Sage
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada
| | - Meraj Khan
- Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada
| | - Stephen Juvet
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
| | - Tereza Martinu
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
| | - Ricardo Zamel
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada
| | - Marcelo Cypel
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
| | - Mingyao Liu
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
| | - Nades Palaniyar
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Translational Medicine, Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, ON, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Shaf Keshavjee
- Latner Thoracic Surgery Research Laboratories, Toronto General Research Institute, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, ON, Canada.,Toronto Lung Transplant Program, University Health Network, Toronto, ON, Canada
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20
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Rodgers JL, Iyer D, Rodgers LE, Vanthenapalli S, Panguluri SK. Impact of hyperoxia on cardiac pathophysiology. J Cell Physiol 2019; 234:12595-12603. [PMID: 30652312 DOI: 10.1002/jcp.28136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 12/20/2018] [Indexed: 01/09/2023]
Abstract
Mechanical ventilation with high oxygen therapy (hyperoxia) is widely implemented in critical care and ICU settings. Although supplemental oxygen is beneficial to treat hypoxia, its use is also associated with poor outcomes and high mortality in patients. Lung injury due to hyperoxia exposure has been well-documented in patients, including in adults and neonates. Thus, lung injury due to hyperoxia has been extensively researched in both preclinical and clinical studies. However, hyperoxia has also been shown to be associated with hemodynamic changes in patients in ICU, including reductions in heart rate, stroke volume, and cardiac output. In addition, certain experimental studies report that hyperoxia exposure in neonates results in cardiac dysfunction in later adult life. Despite this, until recently, the impact of hyperoxia within the heart has not been well studied, or reported, specifically in adult experimental models. To close this significant gap, our lab has sought to clarify hyperoxia-induced cardiac pathophysiology in adult murine models. This review discusses the current findings regarding the cardiovascular impact of hyperoxia exposure.
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Affiliation(s)
- Jennifer L Rodgers
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, Florida
| | - Drishya Iyer
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, Florida
| | - Lydia E Rodgers
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, Florida
| | - Sahit Vanthenapalli
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, Florida
| | - Siva K Panguluri
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, Florida
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21
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Sex susceptibility to ventilator-induced lung injury. Intensive Care Med Exp 2019; 7:7. [PMID: 30635805 PMCID: PMC6329690 DOI: 10.1186/s40635-019-0222-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 01/02/2019] [Indexed: 01/20/2023] Open
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22
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McNicholas BA, Rooney GM, Laffey JG. Lessons to learn from epidemiologic studies in ARDS. Curr Opin Crit Care 2018; 24:41-48. [PMID: 29135617 DOI: 10.1097/mcc.0000000000000473] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE OF REVIEW Recent advances in our understanding of the epidemiology of ARDS has generated key insights into the incidence, risk factors, demographics, management and outcomes from this devastating clinical syndrome. RECENT FINDINGS ARDS occurs in 10% of all ICU patients, in 23% of all mechanically ventilated patients, with 5.5 cases per ICU bed each year. Although some regional variation exists regarding ARDS incidence, this may be less than previously thought. Subphenotypes are increasingly identified within the ARDS cohort, with studies identifying a 'hyperinflammatory' or 'reactive' subgroup that has a higher mortality, and may respond differently to therapeutic interventions. Demographic factors, such as race, may also affect the therapeutic response. Although mortality in ARDS is decreasing in clinical trials, it remains unchanged at approximately 40% in major observational studies. Modifiable ventilatory management factors, including PEEP, airway pressures, and respiratory rate are associated with mortality in ARDS. Hospital and ICU organizational factors play a role in outcome, whereas socioeconomic status is independently associated with survival in patients with ARDS. The Kigali adaptation of the Berlin ARDS definition may provide useful insights into the burden of ARDS in the developing world. SUMMARY ARDS exerts a substantial disease burden, with 40% of patients dying in hospital. Diverse factors, including patient-related factors such as age and illness severity, country level socioeconomic status, and ventilator management and ICU organizational factors each contribute to outcome from ARDS. Addressing these issues provides opportunities to improve outcome in patients with ARDS.
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Affiliation(s)
- Bairbre A McNicholas
- Discipline of Medicine, School of Medicine, National University of Ireland.,Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals
| | - Grainne M Rooney
- Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals
| | - John G Laffey
- Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals.,Discipline of Anaesthesia, School of Medicine, National University of Ireland.,Departments of Anesthesia and Critical Care Medicine, Critical Illness and Injury Research Centre, Keenan Research Centre for Biomedical Science, St Michael's Hospital.,Departments of Anesthesia, Physiology and Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada
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23
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Acute Respiratory Distress Syndrome in Burn Patients: A Comparison of the Berlin and American-European Definitions. J Burn Care Res 2018; 37:e461-9. [PMID: 27070223 DOI: 10.1097/bcr.0000000000000348] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The purpose of this study was to compare the Berlin definition to the American-European Consensus Conference (AECC) definition in determining the prevalence of acute respiratory distress syndrome (ARDS) and associated mortality in the critically ill burn population. Consecutive patients admitted to our institution with burn injury that required mechanical ventilation for more than 24 hours were included for analysis. Included patients (N = 891) were classified by both definitions. The median age, % TBSA burn, and injury severity score (interquartile ranges) were 35 (24-51), 25 (11-45), and 18 (9-26), respectively. Inhalation injury was present in 35.5%. The prevalence of ARDS was 34% using the Berlin definition and 30.5% using the AECC definition (combined acute lung injury and ARDS), with associated mortality rates of 40.9 and 42.9%, respectively. Under the Berlin definition, mortality rose with increased ARDS severity (14.6% no ARDS; 16.7% mild; 44% moderate; and 59.7% severe, P < 0.001). By contrast, under the AECC definition increased mortality was seen only for ARDS category (14.7% no ARDS; 15.1% acute lung injury; and 46.0% ARDS, P < 0.001). The mortality of the 22 subjects meeting the AECC, but not the Berlin definition was not different from patients without ARDS (P = .91). The Berlin definition better stratifies ARDS in terms of severity and correctly excludes those with minimal disease previously captured by the AECC.
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24
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Sánchez-Hurtado LA, Lugo-Cob R, Tejeda-Huezo BC, Esquivel-Chávez A, Cano-Oviedo AA, Zamora-Varela S, Gomez-Flores SS, Arvizu-Tachiquin P, Baltazar-Torres JA. Serum Estradiol Level at Intensive Care Unit Admission and Mortality in Critically Ill Patients. Indian J Crit Care Med 2018. [PMID: 29531449 PMCID: PMC5842464 DOI: 10.4103/ijccm.ijccm_395_16] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Context: It has been observed that sex hormones may play a role in inflammatory processes and mortality of critically ill patients. Aims: The aim was evaluated the relationship between serum estradiol level at Intensive Care Unit (ICU) admission and mortality of critically ill patients. Settings and Design: This study was a prospective cohort conducted in one mixed ICU. Subjects and Methods: In heterogeneous group of critically ill patients admitted to the ICU, we measured serum estradiol at admission time. Statistical Analysis Used: The discrimination to predict mortality of serum estradiol level was assessed by the receiver-operating curve (ROC) curve and its association with mortality by logistic regression analysis. Results: We included 131 patients, 57.3% of which were male. The serum estradiol level measured at ICU admission was significantly higher in nonsurvivors than in survivors: 116 versus 67.2 pg/mL, respectively (P < 0.0001). The area under the ROC of serum estradiol level to predict mortality was 0.74 (P < 0.0001). Serum estradiol level ≥97.9 pg/mL had sensitivity of 60%, specificity of 90%, positive predictive value of 64%, negative predictive value of 88%, positive likelihood ratio of 6, and negative likelihood ratio of 0.44, for predicting mortality. In multivariate analysis, it had relative risk of 6.47 (P = 0.002) for ICU mortality. Conclusions: The serum estradiol level is elevated in critically ill patients, regardless of gender, especially in those who die. It has good discriminative capacity to predict mortality, and it is an independent risk factor for death in this group of patients.
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Affiliation(s)
- Luis Alejandro Sánchez-Hurtado
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México.,Department of Critical Care Medicine, Instituto Nacional de Cancerología, SSA, Mexico City, México
| | - Rolando Lugo-Cob
- Department of Critical Care Medicine, UMAE Cardiology Hospital No. 34 Mexican Institute of Social Security (IMSS), Monterrey, Nuevo León, México
| | - Brigette C Tejeda-Huezo
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - Alejandro Esquivel-Chávez
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - Abraham A Cano-Oviedo
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - Sergio Zamora-Varela
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - Saira S Gomez-Flores
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - Perla Arvizu-Tachiquin
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México
| | - José A Baltazar-Torres
- Department of Critical Care Medicine, UMAE Specialties Hospital "Dr. Antonio Fraga Mouret" National Medical Center "La Raza", Mexican Institute of Social Security (IMSS), Mexico City, México.,Department of Critical Care Medicine, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico City, México
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25
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Chaudhury D, Hasan J, Paul S, Ali I. A STUDY ON CLINICAL PROFILE AND OUTCOME OF PATIENTS WITH ACUTE RESPIRATORY DISTRESS SYNDROME IN A TERTIARY CARE HOSPITAL IN NORTH EAST INDIA. JOURNAL OF EVOLUTION OF MEDICAL AND DENTAL SCIENCES 2017; 6:2943-2947. [DOI: 10.14260/jemds/2017/634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/19/2023]
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26
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Papathanassoglou E, Middleton N, Benbenishty J, Williams G, Christofi MD, Hegadoren K. Systematic review of gender- dependent outcomes in sepsis. Nurs Crit Care 2017; 22:284-292. [PMID: 28295902 DOI: 10.1111/nicc.12280] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 11/28/2016] [Accepted: 12/11/2016] [Indexed: 01/16/2023]
Abstract
BACKGROUND Men and women appear to exhibit different susceptibilities to sepsis and possibly divergent outcomes. However, the effect of sex and gender in critical illness outcomes is still controversial and the underlying mechanisms appear to be complex. OBJECTIVES We aimed to systematically review and synthesize evidence on the influence of sex on outcomes in critically ill adult patients with sepsis, as reported in published studies specifically including investigation of the effect of sex among their aims. Primary outcome measures include in-hospital mortality, intensive care unit (ICU) mortality and length of stay (LOS) in the ICU. SEARCH STRATEGY The review was based on focused literature searches (CINAHL, PUBMED, EMBASE and COCHRANE). Methodological quality was assessed through the STROBE checklist and the Cochrane Tool for Bias in Cohort Studies. Meta-analysis was performed using STATA. Published observational studies addressing outcomes of sepsis among their primary aims and having included gender comparisons among primary outcomes in critically ill adult patients were included. RESULTS A total of eight eligible studies were included. With the exception of mortality, it was not possible to perform meta-analysis for other outcomes. Included studies reported data on 25,619 patients with sepsis (14 309 male/11 310 female). There is a paucity of well-designed studies addressing the effect of sex on mortality among patients with sepsis, and absence of studies addressing the effects of sex on multiple organ dysfunction of non-infectious origin. There was significant heterogeneity among study estimates (p = 0·001; I2 =78·1%). CONCLUSIONS Although results of data syntheses appear to point towards a small disadvantage for survival among women, our results suggest that data on the impact of sex on sepsis outcomes remain equivocal. Implications for future research include approaches to adjustment for confounders and prospective designs. RELEVANCE TO CLINICAL PRACTICE Clarifying sex-related differences in sepsis, if any, is crucial for informing evidence-based care.
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Affiliation(s)
| | - Nicos Middleton
- Department of Nursing, Cyprus University of Technology, Limassol, Cyprus
| | | | - Ged Williams
- Griffith University, Abu Dhabi Health Service, UAE
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27
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Papathanassoglou EDE, Middleton N, Hegadoren K. Sex-dependent disparities in critical illness: methodological implications for critical care research. Nurs Crit Care 2016; 20:58-62. [PMID: 25704543 DOI: 10.1111/nicc.12166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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28
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Meizoso JP, Ray JJ, Karcutskie CA, Teisch LF, Allen CJ, Namias N, Schulman CI, Proctor KG. Admission hyperglycemia is associated with different outcomes after blunt versus penetrating trauma. J Surg Res 2016; 206:83-89. [DOI: 10.1016/j.jss.2016.07.012] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Revised: 06/24/2016] [Accepted: 07/07/2016] [Indexed: 10/21/2022]
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29
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Lung remodeling associated with recovery from acute lung injury. Cell Tissue Res 2016; 367:495-509. [DOI: 10.1007/s00441-016-2521-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 09/29/2016] [Indexed: 12/18/2022]
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30
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Puntorieri V, McCaig LA, Howlett CJ, Yao LJ, Lewis JF, Yamashita CM, Veldhuizen RAW. Lack of matrix metalloproteinase 3 in mouse models of lung injury ameliorates the pulmonary inflammatory response in female but not in male mice. Exp Lung Res 2016; 42:365-379. [PMID: 27676418 DOI: 10.1080/01902148.2016.1231243] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
BACKGROUND The acute respiratory distress syndrome (ARDS) is a complex pulmonary disorder in which the local release of cytokines and chemokines appears central to the pathophysiology. OBJECTIVE Based on the known role of matrix metalloproteinase-3 (MMP3) in inflammatory processes, the objective was to examine the role of MMP3 in the pathogenesis of ARDS through the modulation of pulmonary inflammation. MATERIALS AND METHODS Female and male, wild type (MMP3+/+) and knock out (MMP3-/-) mice were exposed to two, clinically relevant models of ARDS including (i) lipopolysaccharide (LPS)-induced lung injury, and (ii) hydrochloric acid-induced lung injury. Parameters of lung injury and inflammation were assessed through measurements in lung lavage including total protein content, inflammatory cell influx, and concentrations of mediators such as TNF-α, IL-6, G-CSF, CXCL1, CXCL2, and CCL2. Lung histology and compliance were also evaluated in the LPS model of injury. RESULTS Following intra-tracheal LPS instillation, all mice developed lung injury, as measured by an increase in lavage neutrophils, and decrease in lung compliance, with no overall effect of genotype observed. Increased concentrations of lavage inflammatory cytokines and chemokines were also observed following LPS injury, however, LPS-instilled female MMP3-/- mice had lower levels of inflammatory mediators compared to LPS-instilled female MMP3+/+ mice. This effect of the genotype was not observed in male mice. Similar findings, including the MMP3-related sex differences, were also observed after acid-induced lung injury. CONCLUSION MMP3 contributes to the pathogenesis of ARDS, by affecting the pulmonary inflammatory response in female mice in relevant models of lung injury.
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Affiliation(s)
- Valeria Puntorieri
- a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada
| | - Lynda A McCaig
- a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada
| | - Christopher J Howlett
- b Department of Pathology and Laboratory Medicine , Western University , London , Ontario , Canada
| | - Li-Juan Yao
- c Department of Medicine , Western University , London , Ontario , Canada
| | - James F Lewis
- c Department of Medicine , Western University , London , Ontario , Canada
| | - Cory M Yamashita
- a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada.,c Department of Medicine , Western University , London , Ontario , Canada
| | - Ruud A W Veldhuizen
- a Department of Physiology and Pharmacology , Lawson Health Research Institute, Western University , London , Ontario , Canada.,c Department of Medicine , Western University , London , Ontario , Canada
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The Acute Respiratory Distress Syndrome (ARDS) in mechanically ventilated burn patients: An analysis of risk factors, clinical features, and outcomes using the Berlin ARDS definition. Burns 2016; 42:1423-1432. [PMID: 27520712 DOI: 10.1016/j.burns.2016.01.031] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 01/22/2016] [Accepted: 01/26/2016] [Indexed: 01/28/2023]
Abstract
BACKGROUND The Berlin definition of Acute Respiratory Distress Syndrome (ARDS) has been applied to military burns resulting from combat-related trauma, but has not been widely studied among civilian burns. This study's purpose was to use the Berlin definition to determine the incidence of ARDS, and its associated respiratory morbidity, and mortality among civilian burn patients. METHODS Retrospective study of burn patients mechanically ventilated for ≥48h at an American Burn Association-verified burn center. The Berlin criteria identified patients with mild, moderate, and severe ARDS. Logistic regression was used to identify variables predictive of moderate to severe ARDS, and mortality. The outcome measures of interest were duration of mechanical ventilation and in-hospital mortality. Values are shown as the median (Q1-Q3). RESULTS We included 162 subjects [24% female, age 48 (35-60), % total body surface area (TBSA) burn 28 (19-40), % body surface area (BSA) full thickness (FT) burn 13 (0-30), and 62% with inhalation injury]. The incidence of ARDS was 43%. Patients with ARDS had larger %TBSA burns [30.5 (23.1-47.0) vs. 24.8 (17.1-35), p=0.007], larger FT burns [20.5(5.4-35.5) vs. 7 (0-22.1), p=0.001], but had no significant difference in the incidence of inhalation injury (p=0.216), compared to those without ARDS. The % FT burn predicted the development of moderate to severe ARDS [OR 1.034, 95%CI (1.013-1.055), p=0.001]. ARDS developed in the 1st week after burn in 86% of cases. Worsening severity of ARDS was associated with increased days of mechanical ventilation in survivors (p=0.001), a reduction in ventilator-free days/1st 30 days in all subjects (p=0.004), and a strong indication of increased mortality (0% in mild ARDS vs. 50% in severe ARDS, unadjusted p=0.02). Neither moderate ARDS nor severe ARDS were significant predictors of death. CONCLUSIONS ARDS is common among mechanically ventilated civilian burn patients, and develops early after burn. The extent of full thickness burn predicted development of moderate to severe ARDS. Increasing severity of ARDS based upon the Berlin definition was associated with a significantly greater duration of mechanical ventilation and a trend toward higher mortality.
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32
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Misclassification of acute respiratory distress syndrome after traumatic injury: The cost of less rigorous approaches. J Trauma Acute Care Surg 2015; 79:417-24. [PMID: 26307875 DOI: 10.1097/ta.0000000000000760] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
BACKGROUND Adherence to rigorous research protocols for identifying adult respiratory distress syndrome (ARDS) after trauma is variable. To examine how misclassification of ARDS may bias observational studies in trauma populations, we evaluated the agreement of two methods for adjudicating ARDS after trauma: the current gold standard, direct review of chest radiographs and review of dictated radiology reports, a commonly used alternative. METHODS This nested cohort study included 123 mechanically ventilated patients between 2005 and 2008, with at least one PaO2/FIO2 less than 300 within the first 8 days of admission. Two blinded physician investigators adjudicated ARDS by two methods. The investigators directly reviewed all chest radiographs to evaluate for bilateral infiltrates. Several months later, blinded to their previous assessments, they adjudicated ARDS using a standardized rubric to classify radiology reports. A κ statistics was calculated. Regression analyses quantified the association between established risk factors as well as important clinical outcomes and ARDS determined by the aforementioned methods as well as hypoxemia as a surrogate marker. RESULTS The κ was 0.47 for the observed agreement between ARDS adjudicated by direct review of chest radiographs and ARDS adjudicated by review of radiology reports. Both the magnitude and direction of bias on the estimates of association between ARDS and established risk factors as well as clinical outcomes varied by method of adjudication. CONCLUSION Classification of ARDS by review of dictated radiology reports had only moderate agreement with the current gold standard, ARDS adjudicated by direct review of chest radiographs. While the misclassification of ARDS had varied effects on the estimates of associations with established risk factors, it tended to weaken the association of ARDS with important clinical outcomes. A standardized approach to ARDS adjudication after trauma by direct review of chest radiographs will minimize misclassification bias in future observational studies. LEVEL OF EVIDENCE Diagnostic study, level II.
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Nakada TA, Nakao S, Mizushima Y, Matsuoka T. Association between male sex and increased mortality after falls. Acad Emerg Med 2015; 22:708-13. [PMID: 25996880 DOI: 10.1111/acem.12677] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 12/19/2014] [Accepted: 01/05/2015] [Indexed: 01/24/2023]
Abstract
OBJECTIVES Whether sex affects the mortality of trauma patients remains unknown. The hypothesis of this study was that sex was associated with altered mortality rates in trauma. METHODS A retrospective review of trauma patients' records in the Japan Trauma Data Bank was conducted (n = 80,813) from 185 major emergency hospitals across Japan. The primary outcome variable was in-hospital mortality within 28 days. Secondary outcome variables included serious injuries to different body regions with an Abbreviated Injury Scale of ≥3. RESULTS In the analysis of 80,813 trauma patients, males had significantly greater 28-day mortality compared to females (adjusted p = 0.0072, odds ratio [OR] = 1.14, 95% confidence interval [CI] = 1.06 to 1.23) via logistic regression analysis adjusted for age, mechanism, Injury Severity Score, Revised Trauma Score, and potential preexisting risk factors. Of 10 injury categories examined, sex significantly affected in-hospital 28-day mortality rate in falls (adjusted p < 0.0001, OR = 1.34, 95% CI = 1.19 to 1.52). Further analysis of three fall subcategories by falling distance revealed that male patients who fell from ground level had significantly higher 28-day mortality (adjusted p < 0.0001, OR = 1.75, 95% CI = 1.43 to 2.14) and a significantly greater frequency of serious injury to the head, thorax, abdomen, and spine, but a lower frequency of serious injury to the extremities, compared to female patients. CONCLUSIONS Compared to female trauma patients, male trauma patients had greater 28-day mortality. In particular, ground-level falls had a significant sex difference in mortality, with serious injury to different body regions. Sex differences appeared to be important for fatalities from ground-level falls.
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Affiliation(s)
- Taka-aki Nakada
- The Senshu Trauma and Critical Care Center; Osaka Japan
- Department of Emergency and Critical Care Medicine; Chiba University Graduate School of Medicine; Chiba Japan
| | - Shota Nakao
- The Senshu Trauma and Critical Care Center; Osaka Japan
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Gender differences in outcome and use of resources do exist in Swedish intensive care, but to no advantage for women of premenopausal age. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2015; 19:129. [PMID: 25887421 PMCID: PMC4407397 DOI: 10.1186/s13054-015-0873-1] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 03/11/2015] [Indexed: 01/30/2023]
Abstract
INTRODUCTION Preclinical data indicate that oestrogen appears to play a beneficial role in the pathophysiology of and recovery from critical illness. In few previous epidemiologic studies, however, have researchers analysed premenopausal women as a separate group when addressing potential gender differences in critical care outcome. Our aim was to see if women of premenopausal age have a better outcome following critical care and to investigate the association between gender and use of intensive care unit (ICU) resources. METHODS On the basis of our analysis of 127,254 consecutive Simplified Acute Physiology Score III-scored Swedish Intensive Care Registry ICU admissions from 2008 through 2012, we determined the risk-adjusted 30-day mortality, accumulated nurse workload score and ICU length of stay. To investigate associations with sex, we used logistic regression and multivariate analyses on the entire cohort as well as on two subgroups stratified by median age for menopause (up to and including 45 years and older than 45 years) and six selected diagnostic subgroups (sepsis, multiple trauma, chronic obstructive pulmonary disease, acute respiratory distress syndrome, pneumonia and cardiac arrest). RESULTS There was no sex difference in risk-adjusted mortality for the cohort as a whole, and there was no sex difference in risk-adjusted mortality in the group 45 years of age and younger. For the group of patients older than 45 years of age, we found a reduced risk-adjusted mortality in men admitted for cardiac arrest. For the cohort as a whole, and for those admitted with multiple trauma, male sex was associated with a higher nurse workload score and a longer ICU stay. CONCLUSIONS Using information derived from a large multiple ICU register database, we found that premenopausal female sex was not associated with a survival advantage following intensive care in Sweden. When the data were adjusted for age and severity of illness, we found that men used more ICU resources per admission than women did.
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Zhan Y. ABO Blood Type and ARDS. Chest 2015; 147:e67. [DOI: 10.1378/chest.14-2491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Sethuraman KN, Marcolini EG, McCunn M, Hansoti B, Vaca FE, Napolitano LM. Gender-specific issues in traumatic injury and resuscitation: consensus-based recommendations for future research. Acad Emerg Med 2014; 21:1386-94. [PMID: 25420732 DOI: 10.1111/acem.12536] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 07/26/2014] [Accepted: 07/29/2014] [Indexed: 02/03/2023]
Abstract
Traumatic injury remains an unacceptably high contributor to morbidity and mortality rates across the United States. Gender-specific research in trauma and emergency resuscitation has become a rising priority. In concert with the 2014 Academic Emergency Medicine consensus conference "Gender-specific Research in Emergency Care: Investigate, Understand, and Translate How Gender Affects Patient Outcomes," a consensus-building group consisting of experts in emergency medicine, critical care, traumatology, anesthesiology, and public health convened to generate research recommendations and priority questions to be answered and thus move the field forward. Nominal group technique was used for the consensus-building process and a combination of face-to-face meetings, monthly conference calls, e-mail discussions, and preconference surveys were used to refine the research questions. The resulting research agenda focuses on opportunities to improve patient outcomes by expanding research in sex- and gender-specific emergency care in the field of traumatic injury and resuscitation.
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Affiliation(s)
- Kinjal N. Sethuraman
- Department of Emergency Medicine and the Division of Hyperbaric Medicine; R Adams Cowley Shock Trauma Center; University of Maryland School of Medicine; Baltimore MD
| | | | - Maureen McCunn
- Department of Anesthesiology; Divisions of Trauma Anesthesiology and Surgical Critical Care; Baltimore MD
| | - Bhakti Hansoti
- Department of Emergency Medicine; Johns Hopkins University; Baltimore MD
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Groeneveld KM, Hietbrink F, Hardcastle TC, Warren BL, Koenderman L, Leenen LPH. Penetrating thorax injury leads to mild systemic activation of neutrophils without inflammatory complications. Injury 2014; 45:522-7. [PMID: 24119496 DOI: 10.1016/j.injury.2013.09.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 09/16/2013] [Indexed: 02/02/2023]
Abstract
INTRODUCTION Trauma is one of the major causes of morbidity and mortality. Thoracic injuries are associated with inflammatory complications such as ARDS. The pathogenesis of this complication after pulmonary injury is incompletely understood, but neutrophils are thought to play a pivotal role. The aim of this project was to gain more insight in the role of thoracic injuries in the pathophysiological processes that link systemic neutrophil activation with inflammatory complications after trauma. METHODS In this prospective cohort study fifty-five patients with isolated penetrating thoracic injury were included at a level one Trauma Unit. Blood samples were analysed for neutrophil phenotype with the use of flowcytometry within 3 h of trauma and repeated six and 24 h after injury. The presence of inflammatory complications (e.g. ARDS or sepsis/septic shock) was assessed during admission, and this was related to the neutrophil phenotpe. RESULTS The clinical follow-up of fifty-three patients was uneventful. Only two patients developed an inflammatory complication. Within 3 h after trauma, neutrophils showed a decreased expression of FcγRII (p=0.007) and FcγRIII (p=0.001) compared to healthy individuals. After 6 h, expression of active FcγRII (p=0.017), C5aR (p=0.004) and CAECAM8 (p=0.043) increased, whereas L-selectin (p=0.002) decreased. After 24 h also CXCR-2 (CD182) expression increased compared to healthy individuals (p=0.001). CONCLUSIONS Penetrating thoracic trauma leads to a distinct primed activation status of circulating neutrophils within hours. In addition to activation of cells, both young and reverse migrated neutrophils are released into the circulation. This degree of systemic inflammation does not exceed a threshold of inflammation that is needed for the development of inflammatory complications like ARDS.
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Affiliation(s)
| | | | - Timothy C Hardcastle
- Department of Surgery, Tygerberg Hospital, University of Stellenbosch, Cape Town, South Africa.
| | - Brian L Warren
- Department of Surgery, Tygerberg Hospital, University of Stellenbosch, Cape Town, South Africa.
| | - Leo Koenderman
- Department of Respiratory Medicine, UMC Utrecht, The Netherlands.
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Lemos-Filho LB, Mikkelsen ME, Martin GS, Dabbagh O, Adesanya A, Gentile N, Esper A, Gajic O, Gong MN. Sex, race, and the development of acute lung injury. Chest 2013; 143:901-909. [PMID: 23117155 DOI: 10.1378/chest.12-1118] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Prior studies suggest that mortality differs by sex and race in patients who develop acute lung injury (ALI). Whether differences in presentation account for these disparities remains unclear. We sought to determine whether sexual and racial differences exist in the rate of ALI development and ALI-related mortality after accounting for differences in clinical presentations. METHODS This was a multicenter, observational cohort study of 5,201 patients at risk for ALI. Multivariable logistic regression with adjustment for center-level effects was used to adjust for potential covariates. RESULTS The incidence of ALI development was 5.9%; in-hospital mortality was 5.0% for the entire cohort, and 24.4% for those patients who developed ALI. Men were more likely to develop ALI compared to women (6.9% vs 4.7%, P , .001) and had a nonsignificant increase in mortality when ALI developed (27.6% vs 18.5%, P 5 .08). However, after adjustment for baseline imbalances between sexes these differences were no longer significant. Black patients, compared to white patients, presented more frequently with pneumonia, sepsis, or shock and had higher severity of illness. Black patients were less likely to develop ALI than whites (4.5% vs. 6.5%, P 5 .014), and this association remained statistically significant after adjusting for differences in presentation (OR, 0.66; 95 % CI, 0.45-0.96). CONCLUSIONS Sex and race differences exist in the clinical presentation of patients at risk of developing ALI. After accounting for differences in presentation, there was no sex difference in ALI development and outcome. Black patients were less likely to develop ALI despite increased severity of illness on presentation.
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Affiliation(s)
| | - Mark E Mikkelsen
- Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA
| | | | | | | | - Nina Gentile
- Temple University School of Medicine, Philadelphia, PA
| | | | | | - Michelle N Gong
- Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY.
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Soljancic A, Ruiz AL, Chandrashekar K, Maranon R, Liu R, Reckelhoff JF, Juncos LA. Protective role of testosterone in ischemia-reperfusion-induced acute kidney injury. Am J Physiol Regul Integr Comp Physiol 2013; 304:R951-8. [PMID: 23552495 DOI: 10.1152/ajpregu.00360.2012] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Men are at greater risk for renal injury and dysfunction after acute ischemia-reperfusion (I/R) than are women. Studies in animals suggest that the reason for the sex difference in renal injury and dysfunction after I/R is the protective effect of estrogens in females. However, a reduction in testosterone in men is thought to play an important role in mediating cardiovascular and renal disease, in general. In the present study, we tested the hypothesis that I/R of the kidney reduces serum testosterone, and that contributes to renal dysfunction and injury. Male rats that were subjected to renal ischemia of 40 min followed by reperfusion had a 90% reduction in serum testosterone by 3 h after reperfusion that remained at 24 h. Acute infusion of testosterone 3 h after reperfusion attenuated the increase in plasma creatinine and urinary kidney injury molecule-1 (KIM-1) at 24 h, prevented the reduction in outer medullary blood flow, and attenuated the increase in intrarenal TNF-α and the decrease in intrarenal VEGF at 48 h. Castration of males caused greater increases in plasma creatinine and KIM-1 at 24 h than in intact males with renal I/R, and treatment with anastrozole, an aromatase inhibitor, plus testosterone almost normalized plasma creatinine and KIM-1 in rats with renal I/R. These data show that renal I/R is associated with sustained reductions in testosterone, that testosterone repletion protects the kidney, whereas castration promotes renal dysfunction and injury, and that the testosterone-mediated protection is not conferred by conversion to estradiol.
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Affiliation(s)
- Andrea Soljancic
- Department of Medicine, Division of Nephrology, University of Mississippi Medical Center, Jackson, MS 39216, USA
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Vincent JL, Preiser JC. Are prospective cohort studies an appropriate tool to answer clinical nutrition questions? Curr Opin Clin Nutr Metab Care 2013; 16:182-6. [PMID: 23324900 DOI: 10.1097/mco.0b013e32835d803e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Randomized controlled trials can be difficult to conduct in critically ill patients and may not always be the most appropriate type of study. Cohort studies can provide valuable information in large complete populations of patients without strict exclusion criteria and without the need for informed consent, thus potentially being more representative of and applicable to daily practice. RECENT FINDINGS Recent cohort studies have evaluated the various aspects of the epidemiology and practice of nutrition in critically ill patients, including the proportions of patients receiving different types of nutritional support, the potential benefits of supplementary parenteral nutrition, the importance of meeting nutrition targets especially for protein, and the beneficial effects of feeding protocols on outcomes. SUMMARY Results from some of these cohort studies have provided an indication of how nutrition guidelines have been applied in clinical practice and which areas need to be improved. Others have generated hypotheses that will be (or are already being) tested in randomized studies.
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Affiliation(s)
- Jean-Louis Vincent
- Department of Intensive Care, Erasme Hospital, Université libre de Bruxelles, Brussels, Belgium.
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Bakowitz M, Bruns B, McCunn M. Acute lung injury and the acute respiratory distress syndrome in the injured patient. Scand J Trauma Resusc Emerg Med 2012; 20:54. [PMID: 22883052 PMCID: PMC3518173 DOI: 10.1186/1757-7241-20-54] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 06/11/2012] [Indexed: 12/27/2022] Open
Abstract
Acute lung injury and acute respiratory distress syndrome are clinical entities of multi-factorial origin frequently seen in traumatically injured patients requiring intensive care. We performed an unsystematic search using PubMed and the Cochrane Database of Systematic Reviews up to January 2012. The purpose of this article is to review recent evidence for the pathophysiology and the management of acute lung injury/acute respiratory distress syndrome in the critically injured patient. Lung protective ventilation remains the most beneficial therapy. Future trials should compare intervention groups to controls receiving lung protective ventilation, and focus on relevant outcome measures such as duration of mechanical ventilation, length of intensive care unit stay, and mortality.
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Affiliation(s)
- Magdalena Bakowitz
- Department of Anesthesiology & Critical Care, University of Pennsylvania, 3400 Spruce Street, Philadelphia, PA 19104, USA.
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