101
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Baptista L, Pollard D, Di Bella A. Evaluation of Resting Serum Bile Acid Concentrations in Dogs with Sepsis. Vet Sci 2022; 9:627. [PMID: 36423076 PMCID: PMC9695002 DOI: 10.3390/vetsci9110627] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/05/2022] [Accepted: 11/10/2022] [Indexed: 07/30/2023] Open
Abstract
Recent studies in the human literature suggest that serum bile acid concentrations could be an early predictor of short-term survival in critically ill patients. However, there is no available information in the veterinary literature regarding serum bile acid concentrations in dogs with sepsis. We aimed to evaluate if resting serum bile acid concentrations differ between septic and non-septic dogs. This was a retrospective observational study, of medical records at a single referral center over a twelve-year period. Twenty-six client-owned dogs diagnosed with sepsis were identified. Twenty-one dogs presenting with a non-hepatobiliary systemic disease and twenty-nine dogs admitted for an elective orthopedic procedure, considered otherwise healthy, were selected as control groups. Resting serum bile acid concentrations were significantly higher in the septic compared to the non-septic groups (ill control and orthopedic control groups). However, when assessing bile acid concentrations between groups individually, no difference was identified between the septic and the orthopedic control group. These results should be interpreted cautiously.
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Affiliation(s)
- Lara Baptista
- Paragon Veterinary Referrals, Red Hall Cres, Wakefield WF1 2DF, UK
| | - Danica Pollard
- Independent Researcher, The Rodhams, Christchurch PE14 9NU, UK
| | - Andrea Di Bella
- Southern Counties Veterinary Specialists, Forest Corner Farm, Ringwood BH24 3JW, UK
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102
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Ma C, Liu H, Yang S, Li H, Liao X, Kang Y. The emerging roles and therapeutic potential of B cells in sepsis. Front Pharmacol 2022; 13:1034667. [PMID: 36425582 PMCID: PMC9679374 DOI: 10.3389/fphar.2022.1034667] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Accepted: 10/26/2022] [Indexed: 01/03/2024] Open
Abstract
Sepsis is a life-threatening syndrome caused by anomalous host response to infection. The pathogenesis of sepsis is complex, and immune dysfunction is the central link in its occurrence and development. The sepsis immune response is not a local and transient process but a complex and continuous process involving all major cell types of innate and adaptive immunity. B cells are traditionally studied for their ability to produce antibodies in the context of mediating humoral immunity. However, over the past few years, B cells have been increasingly recognized as key modulators of adaptive and innate immunity, and they can participate in immune responses by presenting antigens, producing cytokines, and modulating other immune cells. Recently, increasing evidence links B-cell dysfunction to mechanisms of immune derangement in sepsis, which has drawn attention to the powerful properties of this unique immune cell type in sepsis. Here, we reviewed the dynamic alterations of B cells and their novel roles in animal models and patients with sepsis, and provided new perspectives for therapeutic strategies targeting B cells in sepsis.
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Affiliation(s)
- Chengyong Ma
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Hanrui Liu
- Development and Related Diseases of Women and Children Key Laboratory of Sichuan Province, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Shuo Yang
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Hong Li
- Center of Translational Medicine, Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, West China Second University Hospital, Sichuan University, Chengdu, China
| | - Xuelian Liao
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Yan Kang
- Department of Critical Care Medicine, West China Hospital, Sichuan University, Chengdu, China
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103
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Lv Z, Duan S, Zhou M, Gu M, Li S, Wang Y, Xia Q, Xu D, Mao Y, Dong W, Jiang L. Mouse Bone Marrow Mesenchymal Stem Cells Inhibit Sepsis-Induced Lung Injury in Mice via Exosomal SAA1. Mol Pharm 2022; 19:4254-4263. [PMID: 36173129 DOI: 10.1021/acs.molpharmaceut.2c00542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Sepsis is a global disease burden, and approximately 40% of cases develop acute lung injury (ALI). Bone marrow mesenchymal stromal cells (BMSCs) and their exosomes are widely used in treating a variety of diseases including sepsis. As an acute phase protein, serum amyloid A1 (SAA1) regulates inflammation and immunity. However, the role of SAA1 in BMSCs-exosomes in septic lung injury remains to be elucidated. Exosomes derived from serum and BMSCs were isolated by ultracentrifugation. SAA1 was silenced or overexpressed in mouse BMSCs using lentiviral plasmids, containing either SAA1-targeting short interfering RNAs or SAA1 cDNA. Sepsis was induced by cecal ligation and puncture (CLP). LPS was used to induce ALI in mice. Mouse alveolar macrophages were isolated by flow cytometry. Levels of SAA1, endotoxin, TNF-α, and IL-6 were measured using commercial kits. LPS internalization was monitored by immunostaining. RT-qPCR or immunoblots were performed to test gene and protein expressions. Serum exosomes of patients with sepsis-induced lung injury had significantly higher levels of SAA1, endotoxin, TNF-α, and IL-6. Overexpression of SAA1 in BMSCs inhibited CLP- or LPS-induced lung injury and decreased CLP- or LPS-induced endotoxin, TNF-α, and IL-6 levels. Administration of the SAA1 blocking peptide was found to partially inhibit SAA1-induced LPS internalization by mouse alveolar macrophages and reverse the protective effect of SAA1. In conclusion, BMSCs inhibit sepsis-induced lung injury through exosomal SAA1. These results highlight the importance of BMSCs, exosomes, and SAA1, which may provide novel directions for the treatment of septic lung injury.
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Affiliation(s)
- Zhou Lv
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Shuxian Duan
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Miao Zhou
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Minglu Gu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Siyuan Li
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Yan Wang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Qin Xia
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Dunfeng Xu
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Yanfei Mao
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Wenwen Dong
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
| | - Lai Jiang
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, No.1665, Kongjiang Road, Yangpu District, Shanghai 200092, China
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104
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Kattan E, Castro R, Miralles-Aguiar F, Hernández G, Rola P. Reply to: What is meant by "fluid tolerance ?". J Crit Care 2022; 72:154158. [PMID: 36174433 DOI: 10.1016/j.jcrc.2022.154158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 09/05/2022] [Accepted: 09/12/2022] [Indexed: 10/14/2022]
Affiliation(s)
- Eduardo Kattan
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Ricardo Castro
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | | | - Glenn Hernández
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Chile
| | - Philippe Rola
- Intensive Care Unit, Hopital Santa Cabrini, CIUSSS EMTL, Montreal, Canada.
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105
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Zhao B, Li M, Sun W, Li J, Liu L, Wang Y, Sun S, Xu L, Qi X, Xie M, Zhou Y, Ni T, Yao Y, Chen P, Yu M, Jiang W, Ning N, Sheng H, Chen E, Wang R, Tong C, Cao Y, Sun M, Mao E. High-dose vitamin C on sepsis: Protocol of a prospective, multi-centered, double-blinded, randomized, and placebo-controlled superiority study. Front Med (Lausanne) 2022; 9:950246. [PMID: 36186784 PMCID: PMC9520308 DOI: 10.3389/fmed.2022.950246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 08/17/2022] [Indexed: 11/21/2022] Open
Abstract
Background Sepsis is an inflammatory syndrome with life-threatening organ dysfunction and high mortality. In the recent 10 years, high-dose intravenous injection of vitamin C, the first-line antioxidant of humans, has received highlighted attention in the field of critical care. The study aims to examine the efficacy and safety of high-dose intravenous injection of vitamin C in the treatment of sepsis. Methods and design Here, we are conducting a prospective, multi-centered, double-blinded, randomized, and placebo-controlled superiority study named High-Dose Vitamin C on Sepsis (HDVCOS). A total of 620 participants diagnosed with sepsis in four participating sites across China that satisfy the eligibility criteria will be randomized at a ratio of 1:1 to receive treatment with a high-dose intravenous injection of vitamin C (200 mg/kg/24 h) or placebo (saline) for 4 days. The primary outcome is 28 days of mortality. The secondary outcomes include the incidence of organ failure, Sequential Organ Failure Assessment (SOFA) score change, organ support, the relationship between plasma vitamin C concentration and outcomes, and adverse events. Conclusion The findings of this study will provide potential evidence for high-dose intravenous injection of vitamin C in the treatment of sepsis. Clinical trial registration [http://www.chictr.org.cn/showprojen.aspx?proj=29851], identifier [ChiCTR1800017633].
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Affiliation(s)
- Bing Zhao
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mengjiao Li
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenwu Sun
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian Li
- Department of The Clinical Research, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Leshan Liu
- Department of The Clinical Research, Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yihui Wang
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Silei Sun
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lili Xu
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xing Qi
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Mengqi Xie
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuhua Zhou
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Tongtian Ni
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yi Yao
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peili Chen
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Meiling Yu
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Weisong Jiang
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ning Ning
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huiqiu Sheng
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Erzhen Chen
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ruilan Wang
- Department of Critical Care, First People’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Ruilan Wang,
| | - Chaoyang Tong
- Department of Emergency, Zhongshan Hospital Affiliated to Fudan University, Shanghai, China
- Chaoyang Tong,
| | - Yu Cao
- Department of Emergency, West China Hospital, Sichuan University, Sichuan, China
- Yu Cao,
| | - Mingwei Sun
- Department of Emergency, Sichuan Provincial People’s Hospital, Sichuan, China
- Mingwei Sun,
| | - Enqiang Mao
- Department of Emergency of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Enqiang Mao,
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106
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Mück A, Herter T. [69/m-Recurrent diverticulitis of the pelvic colon, tachypnea and altered mental status : Preparation course anesthesiological intensive care medicine: case 9]. DIE ANAESTHESIOLOGIE 2022; 71:48-55. [PMID: 35925178 DOI: 10.1007/s00101-022-01146-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Alexander Mück
- Klinik für Anästhesiologie und operative Intensivmedizin, Universitätsklinikum Augsburg, Stenglinstraße 2, 86156, Augsburg, Deutschland.
| | - Tobias Herter
- Klinik für Anästhesie, Intensiv- & Notfallmedizin, St. Josefskrankenhaus Freiburg, Freiburg, Deutschland
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107
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Browne CA, Clarke G, Fitzgerald P, O'Sullivan J, Dinan TG, Cryan JF. Distinct post-sepsis induced neurochemical alterations in two mouse strains. Brain Behav Immun 2022; 104:39-53. [PMID: 35569797 DOI: 10.1016/j.bbi.2022.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/12/2022] [Accepted: 05/06/2022] [Indexed: 11/20/2022] Open
Abstract
Sepsis associated encephalopathy, occurs in 70% of severe septic cases, following which survivors exhibit long-term cognitive impairment or global loss of cognitive function. Currently there is no clearly defined neurochemical basis of septic encephalopathy. Moreover, the lingering neurological complications associated with the severe acute respiratory syndrome CoV 2 (SARS-CoV-2) and the significant worsening in outcomes for those individuals with SARS-Cov-2 following sepsis underscore the need to define factors underlying the susceptibility to acute toxic encephalitis. In this study, differential neurochemical sequelae in response to sepsis (lipopolysaccharide (LPS)-induced endotoxemia and caecal ligation and puncture (CLP)), were evaluated in two inbred mouse strains, known to differ in behaviour, immune profile, and neurotransmitter levels, namely BALB/c and C57BL/6J. It was hypothesized that these strains would differ in sepsis severity, cytokine profile, peripheral tryptophan metabolism and central monoamine turnover. BALB/c mice exhibited more pronounced sickness behavioural scores, hypothermia, and significant upregulation of cytokines in the LPS model relative to C57BL/6J mice. Increased plasma kynurenine/tryptophan ratio, hippocampal serotonin and brainstem dopamine turnover were evident in both strains, but the magnitude was greater in BALB/c mice. In addition, CLP significantly enhanced kynurenine levels and hippocampal serotonergic and dopaminergic neurotransmission in C57BL/6J mice. Overall, these studies depict consistent changes in kynurenine, serotonin, and dopamine post sepsis. Further evaluation of these monoamines in the context of septic encephalopathy and cognitive decline is warranted. Moreover, these data suggest the continued evaluation of altered peripheral kynurenine metabolism as a potential blood-based biomarker of sepsis.
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Affiliation(s)
- Caroline A Browne
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland; Department of Psychiatry & Neurobehavioural Science, University College Cork, Ireland.
| | - Gerard Clarke
- APC Microbiome Ireland, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
| | | | | | - Timothy G Dinan
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland
| | - John F Cryan
- APC Microbiome Ireland, University College Cork, Ireland; Neuropharmacology Research Group, Department of Pharmacology & Therapeutics, University College Cork, Ireland; Department of Anatomy & Neuroscience, University College Cork, Ireland
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108
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Wang Z, Wang X, Guo Z, Liao H, Chai Y, Wang Z, Wang Z. Reduning Attenuates LPS-Induced Human Unmilical Vein Endothelial Cells (HUVECs) Apoptosis Through PI3K-AKT Signaling Pathway. Front Pharmacol 2022; 13:921337. [PMID: 35903333 PMCID: PMC9315302 DOI: 10.3389/fphar.2022.921337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/19/2022] [Indexed: 02/06/2023] Open
Abstract
The molecular mechanism of Reduning (RDN) in the treatment of sepsis was analyzed based on network pharmacology. The system pharmacology method was administered to search the active ingredients and targets of RDN, identify the sepsis-related genes, and determine the targets of RDN in the treatment of sepsis. Cytoscape was used to build a “drug component-target” network to screen key compounds. A protein-protein interaction (PPI) network was constructed using STRING, and core targets were revealed through topological analysis. 404 shared targets of RDN and sepsis were introduced into DAVID Bioinformatics Resources 6.8 for GO and KEGG enrichment analysis to predict their possible signaling pathways and explore their molecular mechanisms. GO enrichment analysis highlighted that they were largely related to protein phosphorylation, inflammatory reaction, and positive regulation of mitogen-activated protein kinase (MAPK) cascade. KEGG enrichment analysis outlined that they were enriched in PI3K-AKT signaling pathway, calcium signaling pathway, rhoptry-associated protein 1 (Rap1) signaling pathway, and advanced glycation end products and receptors for advanced glycation end products (AGE-RAGE) signaling pathway. Molecular biological validation results exposed that RDN could significantly improve the protein expression of p-AKT and p-PI3K, alleviate apoptosis-related proteins expression level and decrease apoptosis rate in LPS-induced HUVECs. In conclusion, it was illustrated that RDN could considerably constrain LPS-induced apoptosis by activating the PI3K-AKT signaling pathway, which advocated a basis for fundamental mechanism research and clinical application of RDN in the treatment of sepsis.
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Affiliation(s)
- Ziyi Wang
- School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Xuesong Wang
- School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Zhe Guo
- School of Clinical Medicine, Tsinghua University, Beijing, China
- Department of Liver Intensive Care Unit, Beijing Tsinghua Changgung Hospital, Beijing, China
| | - Haiyan Liao
- School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Yan Chai
- School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Ziwen Wang
- School of Clinical Medicine, Tsinghua University, Beijing, China
| | - Zhong Wang
- School of Clinical Medicine, Tsinghua University, Beijing, China
- *Correspondence: Zhong Wang,
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109
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Wang H, Yang JL, Chen C, Zheng Y, Chen M, Qi J, Tang S, Zhan XY. Identification of Peptoniphilus vaginalis-Like Bacteria, Peptoniphilus septimus sp. nov., From Blood Cultures in a Cervical Cancer Patient Receiving Chemotherapy: Case and Implications. Front Cell Infect Microbiol 2022; 12:954355. [PMID: 35880078 PMCID: PMC9307962 DOI: 10.3389/fcimb.2022.954355] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Accepted: 06/17/2022] [Indexed: 11/17/2022] Open
Abstract
A 39-year-old woman with a 3-year human papillomavirus (HPV) 18 infection history was admitted to the hospital for a 16-day history of vaginal bleeding after sex. She was diagnosed with cervical cancer based on the results of the electronic colposcopy, cervical cytology, microscopy, and magnetic resonance imaging (MRI). Then, she received chemotherapy, with paclitaxel 200 mg (day 1), cisplatin 75 mg (day 2), and bevacizumab 700 mg (day 3) twice with an interval of 27 days. During the examination for the diagnosis and treatment, many invasive operations, including removal of intrauterine device, colposcopy, and ureteral dilatation, were done. After that, the patient was discharged and entered the emergency department about 2.5 months later with a loss of consciousness probably caused by septic shock. The patient finally died of multiple organ failure and bacterial infection, although she has received antimicrobial therapy. The blood cultures showed a monobacterial infection with an anaerobic Gram-positive bacterial strain, designated as SAHP1. Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI–TOF MS) indicated that the patient was infected with Peptoniphilus asaccharolyticus, while molecular analysis and genome-based taxonomy confirmed the infection with a novel Peptoniphilus species that has a close genetic relationship with Peptoniphilus vaginalis and proposed provisionally as Peptoniphilus septimus sp. nov., which may also act as a commensal of the human vagina. Genomic features of SAHP1 have been fully described, and comparative genomic analysis reveals the known prokaryote relative of Peptoniphilus septimus sp. nov. in the genus Peptoniphilus. The invasive operations on the genital tract during the diagnosis and treatment of the patient and the tumor tissue damage and bleeding may have a certain role in the bloodstream infection. This study casts a new light on the Peptoniphilus bacteria and prompts clinicians to include anaerobic blood cultures as part of their blood culture procedures, especially on patients with genital tract tumors. Furthermore, due to the incomplete database and unsatisfying resolution of the MALDI–TOF MS for Peptoniphilus species identification, molecular identification, especially whole-genome sequencing, is required for those initially identified as bacteria belonging to Peptoniphilus in the clinical laboratory.
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Affiliation(s)
- Huacheng Wang
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Jin-Lei Yang
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Chunmei Chen
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Ying Zheng
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mingming Chen
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Junhua Qi
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Shihuan Tang
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Xiao-Yong Zhan
- The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
- *Correspondence: Xiao-Yong Zhan,
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110
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Cros C, Margier M, Cannelle H, Charmetant J, Hulo N, Laganier L, Grozio A, Canault M. Nicotinamide Mononucleotide Administration Triggers Macrophages Reprogramming and Alleviates Inflammation During Sepsis Induced by Experimental Peritonitis. Front Mol Biosci 2022; 9:895028. [PMID: 35832733 PMCID: PMC9271973 DOI: 10.3389/fmolb.2022.895028] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2022] [Accepted: 05/13/2022] [Indexed: 12/03/2022] Open
Abstract
Peritonitis and subsequent sepsis lead to high morbidity and mortality in response to uncontrolled systemic inflammation primarily mediated by macrophages. Nicotinamide adenine dinucleotide (NAD+) is an important regulator of oxidative stress and immunoinflammatory responses. However, the effects of NAD+ replenishment during inflammatory activation are still poorly defined. Hence, we investigated whether the administration of β-nicotinamide mononucleotide (β-NMN), a natural biosynthetic precursor of NAD+, could modulate the macrophage phenotype and thereby ameliorate the dysregulated inflammatory response during sepsis. For this purpose, C57BL6 mice were subjected to the cecal ligation and puncture (CLP) model to provoke sepsis or were injected with thioglycolate to induce sterile peritonitis with recruitment and differentiation of macrophages into the inflamed peritoneal cavity. β-NMN was administered for 4 days after CLP and for 3 days post thioglycolate treatment where peritoneal macrophages were subsequently analyzed. In the CLP model, administration of β-NMN decreased bacterial load in blood and reduced clinical signs of distress and mortality during sepsis. These results were supported by transcriptomic analysis of hearts and lungs 24 h post CLP-induction, which revealed that β-NMN downregulated genes controlling the immuno-inflammatory response and upregulated genes involved in bioenergetic metabolism, mitochondria, and autophagy. In the thioglycolate model, a significant increase in the proportion of CD206 macrophages, marker of anti-inflammatory M2 phenotype, was detected on peritoneal exudate macrophages from β-NMN-administered mice. Transcriptomic signature of these macrophages after bacterial stimulation confirmed that β-NMN administration limited the pro-inflammatory M1 phenotype and induced the expression of specific markers of M2 type macrophages. Furthermore, our data show that β-NMN treatment significantly impacts NAD + metabolism. This shift in the macrophage phenotype and metabolism was accompanied by a reduction in phagolysosome acidification and secretion of inflammatory mediators in macrophages from β-NMN-treated mice suggesting a reduced pro-inflammatory activation. In conclusion, administration of β-NMN prevented clinical deterioration and improved survival during sepsis. These effects relied on shifts in the metabolism of organs that face up an increased energy requirement caused by bacterial infection and in innate immunity response, including reprogramming of macrophages from a highly inflammatory phenotype to an anti-inflammatory/pro-resolving profile.
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Affiliation(s)
| | | | | | | | | | | | - Alessia Grozio
- Nuvamid SA, Lausanne, Switzerland
- *Correspondence: Alessia Grozio,
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111
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Shapiro L, Scherger S, Franco-Paredes C, Gharamti AA, Fraulino D, Henao-Martinez AF. Chasing the Ghost: Hyperinflammation Does Not Cause Sepsis. Front Pharmacol 2022; 13:910516. [PMID: 35814227 PMCID: PMC9260244 DOI: 10.3389/fphar.2022.910516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 05/23/2022] [Indexed: 12/15/2022] Open
Abstract
Sepsis is infection sufficient to cause illness in the infected host, and more severe forms of sepsis can result in organ malfunction or death. Severe forms of Coronavirus disease-2019 (COVID-19), or disease following infection with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are examples of sepsis. Following infection, sepsis is thought to result from excessive inflammation generated in the infected host, also referred to as a cytokine storm. Sepsis can result in organ malfunction or death. Since COVID-19 is an example of sepsis, the hyperinflammation concept has influenced scientific investigation and treatment approaches to COVID-19. However, decades of laboratory study and more than 100 clinical trials designed to quell inflammation have failed to reduce sepsis mortality. We examine theoretical support underlying widespread belief that hyperinflammation or cytokine storm causes sepsis. Our analysis shows substantial weakness of the hyperinflammation approach to sepsis that includes conceptual confusion and failure to establish a cause-and-effect relationship between hyperinflammation and sepsis. We conclude that anti-inflammation approaches to sepsis therapy have little chance of future success. Therefore, anti-inflammation approaches to treat COVID-19 are likewise at high risk for failure. We find persistence of the cytokine storm concept in sepsis perplexing. Although treatment approaches based on the hyperinflammation concept of pathogenesis have failed, the concept has shown remarkable resilience and appears to be unfalsifiable. An approach to understanding this resilience is to consider the hyperinflammation or cytokine storm concept an example of a scientific paradigm. Thomas Kuhn developed the idea that paradigms generate rules of investigation that both shape and restrict scientific progress. Intrinsic features of scientific paradigms include resistance to falsification in the face of contradictory data and inability of experimentation to generate alternatives to a failing paradigm. We call for rejection of the concept that hyperinflammation or cytokine storm causes sepsis. Using the hyperinflammation or cytokine storm paradigm to guide COVID-19 treatments is likewise unlikely to provide progress. Resources should be redirected to more promising avenues of investigation and treatment.
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Affiliation(s)
- Leland Shapiro
- Division of Infectious Diseases, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO, United States
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- *Correspondence: Leland Shapiro,
| | - Sias Scherger
- Division of Infectious Diseases, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO, United States
| | - Carlos Franco-Paredes
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Hospital Infantil de México, Federico Gomez, Mexico City, Mexico
| | - Amal A. Gharamti
- Department of Internal Medicine, Yale University, Waterbury, CT, United States
| | - David Fraulino
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Andrés F. Henao-Martinez
- Division of Infectious Diseases, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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Hwang W, Shimizu M, Lee JW. Role of extracellular vesicles in severe pneumonia and sepsis. Expert Opin Biol Ther 2022; 22:747-762. [PMID: 35418256 PMCID: PMC9971738 DOI: 10.1080/14712598.2022.2066470] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION Extracellular vesicles (EV) released constitutively or following external stimuli from structural and immune cells are now recognized as important mediators of cell-to-cell communication. They are involved in the pathogenesis of pneumonia and sepsis, leading causes of acute respiratory distress syndrome (ARDS) where mortality rates remain up to 40%. Multiple investigators have demonstrated that one of the underlying mechanisms of the effects of EVs is through the transfer of EV content to host cells, resulting in apoptosis, inflammation, and permeability in target organs. AREAS COVERED The current review focuses on preclinical research examining the role of EVs released into the plasma and injured alveolus during pneumonia and sepsis. EXPERT OPINION Inflammation is associated with elevated levels of circulating EVs that are released by activated structural and immune cells and can have significant proinflammatory, procoagulant, and pro-permeability effects in critically ill patients with pneumonia and/or sepsis. However, clinical translation of the use of EVs as biomarkers or potential therapeutic targets may be limited by current methodologies used to identify and quantify EVs accurately (whether from host cells or infecting organisms) and lack of understanding of the role of EVs in the reparative phase during recovery from pneumonia and/or sepsis.
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Affiliation(s)
- Wonjung Hwang
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary’s hospital, Catholic College of Medicine, The Catholic University of Korea, Republic of Korea
| | - Masaru Shimizu
- Department of Anesthesiology, University of California, San Francisco, San Francisco, California
| | - Jae-Woo Lee
- Department of Anesthesiology, University of California, San Francisco, San Francisco, California.,Jae-Woo Lee, MD, Professor, University of California San Francisco, Department of Anesthesiology, 505 Parnassus Ave., Box 0648, San Francisco, CA 94143, Telephone: (415) 476-0452, Fax: (415) 514-2999,
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113
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Scheibner A, Betthauser KD, Bewley AF, Juang P, Lizza B, Micek S, Lyons PG. Machine learning to predict vasopressin responsiveness in patients with septic shock. Pharmacotherapy 2022; 42:460-471. [PMID: 35426141 DOI: 10.1002/phar.2683] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 03/15/2022] [Accepted: 04/01/2022] [Indexed: 12/19/2022]
Abstract
STUDY OBJECTIVES The objective of this study was to develop and externally validate a model to predict adjunctive vasopressin response in patients with septic shock being treated with norepinephrine for bedside use in the intensive care unit. DESIGN This was a retrospective analysis of two adult tertiary intensive care unit septic shock populations. SETTING Barnes-Jewish Hospital (BJH) from 2010 to 2017 and Beth Israel Deaconess Medical Center (BIDMC) from 2001 to 2012. PATIENTS Two septic shock populations (548 BJH patients and 464 BIDMC patients) that received vasopressin as second-line vasopressor. INTERVENTION Patients who were vasopressin responsive were compared with those who were nonresponsive. Vasopressin response was defined as survival with at least a 20% decrease in maximum daily norepinephrine requirements by one calendar day after vasopressin initiation, without a third-line vasopressor. MEASUREMENTS Two supervised machine learning models (gradient-boosting machine [XGBoost] and elastic net penalized logistic regression [EN]) were trained in 1000 bootstrap replications of the BJH data and externally validated in the BIDMC data to predict vasopressin responsiveness. MAIN RESULTS Vasopressin responsiveness was similar among each cohort (BJH 45% and BIDMC 39%). Mortality was lower for vasopressin responders compared with nonresponders in the BJH (51% vs. 73%) and BIDMC (45% vs. 83%) cohorts, respectively. Both models demonstrated modest discrimination in the training (XGBoost area under receiver operator curve [AUROC] 0.61 [95% confidence interval (CI) 0.61-0.61], EN 0.59 [95% CI 0.58-0.59]) and external validation (XGBoost 0.68 [95% CI 0.63-0.73], EN 0.64 [95% CI 0.59-0.69]) datasets. CONCLUSION Vasopressin nonresponsiveness is common and associated with increased mortality. The models' modest performances highlight the complexity of septic shock and indicate that more research will be required before clinical decision support tools can aid in anticipating patient-specific responsiveness to vasopressin.
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Affiliation(s)
- Aileen Scheibner
- Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Kevin D Betthauser
- Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Alice F Bewley
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
| | - Paul Juang
- Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, Missouri, USA.,Department of Pharmacy Practice, University of Health Sciences and Pharmacy, St. Louis, Missouri, USA
| | - Bryan Lizza
- Department of Pharmacy, Barnes-Jewish Hospital, St. Louis, Missouri, USA
| | - Scott Micek
- Department of Pharmacy Practice, University of Health Sciences and Pharmacy, St. Louis, Missouri, USA
| | - Patrick G Lyons
- Division of Pulmonary and Critical Care Medicine, Washington University School of Medicine, St. Louis, Missouri, USA
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Sekino N, Selim M, Shehadah A. Sepsis-associated brain injury: underlying mechanisms and potential therapeutic strategies for acute and long-term cognitive impairments. J Neuroinflammation 2022; 19:101. [PMID: 35488237 PMCID: PMC9051822 DOI: 10.1186/s12974-022-02464-4] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Accepted: 04/14/2022] [Indexed: 12/29/2022] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection. Sepsis causes cerebral dysfunction in the short and long term and induces disruption of the blood–brain barrier (BBB), neuroinflammation, hypoperfusion, and accumulation of amyloid β (Aβ) and tau protein in the brain. White matter changes and brain atrophy can be detected using brain imaging, but unfortunately, there is no specific treatment that directly addresses the underlying mechanisms of cognitive impairments in sepsis. Here, we review the underlying mechanisms of sepsis-associated brain injury, with a focus on BBB dysfunction and Aβ and tau protein accumulation in the brain. We also describe the neurological manifestations and imaging findings of sepsis-associated brain injury, and finally, we propose potential therapeutic strategies for acute and long-term cognitive impairments associated with sepsis. In the acute phase of sepsis, we suggest using antibiotics (such as rifampicin), targeting proinflammatory cytokines, and preventing ischemic injuries and hypoperfusion. In the late phase of sepsis, we suggest targeting neuroinflammation, BBB dysfunction, Aβ and tau protein phosphorylation, glycogen synthase kinase-3 beta (GSK3β), and the receptor for advanced glycation end products (RAGE). These proposed strategies are meant to bring new mechanism-based directions for future basic and clinical research aimed at preventing or ameliorating acute and long-term cognitive impairments in patients with sepsis.
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Affiliation(s)
- Nobufumi Sekino
- Department of Medicine, Translational Therapeutics Division, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, 02215, USA
| | - Magdy Selim
- Department of Neurology, Stroke and Cerebrovascular Diseases Division, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, CLS-641, Boston, MA, 02215, USA
| | - Amjad Shehadah
- Department of Neurology, Stroke and Cerebrovascular Diseases Division, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, CLS-641, Boston, MA, 02215, USA.
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Polarization of Microglia and Its Therapeutic Potential in Sepsis. Int J Mol Sci 2022; 23:ijms23094925. [PMID: 35563317 PMCID: PMC9101892 DOI: 10.3390/ijms23094925] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 02/04/2023] Open
Abstract
Sepsis is a life-threatening organ dysfunction caused by a dysregulated host response to infection, leaving the inflammation process without a proper resolution, leading to tissue damage and possibly sequelae. The central nervous system (CNS) is one of the first regions affected by the peripheral inflammation caused by sepsis, exposing the neurons to an environment of oxidative stress, triggering neuronal dysfunction and apoptosis. Sepsis-associated encephalopathy (SAE) is the most frequent sepsis-associated organ dysfunction, with symptoms such as deliriums, seizures, and coma, linked to increased mortality, morbidity, and cognitive disability. However, the current therapy does not avoid those patients’ symptoms, evidencing the search for a more optimal approach. Herein we focus on microglia as a prominent therapeutic target due to its multiple functions maintaining CNS homeostasis and its polarizing capabilities, stimulating and resolving neuroinflammation depending on the stimuli. Microglia polarization is a target of multiple studies involving nerve cell preservation in diseases caused or aggravated by neuroinflammation, but in sepsis, its therapeutic potential is overlooked. We highlight the peroxisome proliferator-activated receptor gamma (PPARγ) neuroprotective properties, its role in microglia polarization and inflammation resolution, and the interaction with nuclear factor-κB (NF-κB) and mitogen-activated kinases (MAPK), making PPARγ a molecular target for sepsis-related studies to come.
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116
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Giustina AD, Rodrigues JF, Bagio E, Bonfante S, Joaquim L, Zarbato G, Stork S, Machado RS, de Souza Goldim MP, Danielski LG, Mathias K, Dacoregio C, Cardoso T, Predroso GS, Venturini LM, Zaccaron RP, Silveira PCL, Pinho RA, Petronilho F. Lung-Brain Crosstalk in Sepsis: Protective Effect of Prophylactic Physical Exercise Against Inflammation and Oxidative Stress in Rats. Mol Neurobiol 2022; 59:3860-3872. [DOI: 10.1007/s12035-022-02823-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 04/01/2022] [Indexed: 11/24/2022]
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Gases in Sepsis: Novel Mediators and Therapeutic Targets. Int J Mol Sci 2022; 23:ijms23073669. [PMID: 35409029 PMCID: PMC8998565 DOI: 10.3390/ijms23073669] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/25/2022] [Accepted: 03/25/2022] [Indexed: 02/06/2023] Open
Abstract
Sepsis, a potentially lethal condition resulting from failure to control the initial infection, is associated with a dysregulated host defense response to pathogens and their toxins. Sepsis remains a leading cause of morbidity, mortality and disability worldwide. The pathophysiology of sepsis is very complicated and is not yet fully understood. Worse still, the development of effective therapeutic agents is still an unmet need and a great challenge. Gases, including nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S), are small-molecule biological mediators that are endogenously produced, mainly by enzyme-catalyzed reactions. Accumulating evidence suggests that these gaseous mediators are widely involved in the pathophysiology of sepsis. Many sepsis-associated alterations, such as the elimination of invasive pathogens, the resolution of disorganized inflammation and the preservation of the function of multiple organs and systems, are shaped by them. Increasing attention has been paid to developing therapeutic approaches targeting these molecules for sepsis/septic shock, taking advantage of the multiple actions played by NO, CO and H2S. Several preliminary studies have identified promising therapeutic strategies for gaseous-mediator-based treatments for sepsis. In this review article, we summarize the state-of-the-art knowledge on the pathophysiology of sepsis; the metabolism and physiological function of NO, CO and H2S; the crosstalk among these gaseous mediators; and their crucial effects on the development and progression of sepsis. In addition, we also briefly discuss the prospect of developing therapeutic interventions targeting these gaseous mediators for sepsis.
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118
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Wang Y, Huang Q, He F. Aberrant blood MALT1 and its relevance with multiple organic dysfunctions, T helper cells, inflammation, and mortality risk of sepsis patients. J Clin Lab Anal 2022; 36:e24331. [PMID: 35262976 PMCID: PMC8993658 DOI: 10.1002/jcla.24331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 02/16/2022] [Accepted: 02/23/2022] [Indexed: 11/06/2022] Open
Abstract
Background MALT1 is linked with multiple organic dysfunctions, inflammatory storm, and T helper (Th) cell differentiation. Herein, the current study aimed to investigate the correlation of peripheral blood mononuclear cell (PBMC) MALT1 with Th1 cells, Th17 cells, and prognosis of sepsis patients. Methods In general, 78 sepsis patients and 40 health controls (HCs) were enrolled. MALT1 expression was detected in PBMCs from all subjects by RT‐qPCR. Besides, Th1 and Th17 cells were measured in PBMCs from sepsis patients by flow cytometry; interleukin 17A (IL‐17A) and interferon gamma (IFN‐γ) were determined in serum from sepsis patients by ELISA. Results MALT1 expression was higher in sepsis patients than HCs (p < 0.001). MALT1 expression was positively correlated with Th17 cells (rs = 0.291, p = 0.038) and IL‐17A (rs = 0.383, p = 0.001), but not with Th1 cells (rs = 0.204, p = 0.151) or IFN‐γ (rs = 0.175, p = 0.125) in sepsis patients. MALT1 expression was positively correlated with APACHE II score (rs = 0.275, p = 0.015), C‐reactive protein (CRP) (rs = 0.257, p = 0.023), and sequential organ failure assessment (SOFA) score (rs = 0.306, p = 0.006) (MALT1 expression was positively correlated with SOFA respiratory system score (rs = 0.348, p = 0.002), and SOFA liver score (rs = 0.260, p = 0.021), but not with SOFA scores in nervous system, cardio vascular system, coagulation, and renal system (all p > 0.05)). MALT1 expression (p = 0.010), Th1 cells (p = 0.010), Th17 cells (p = 0.038), and IL‐17A (p = 0.012), except for IFN‐γ (p = 0.102), elevated in sepsis deaths compared with sepsis survivors. Conclusion PBMC MALT1 is highly expressed in sepsis patients with its overexpression associated with multiple organic dysfunctions, elevated Th17 cells, and increased mortality risk.
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Affiliation(s)
- Yibin Wang
- Department of Central Intensive Care Unit, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Qinghe Huang
- Department of Central Intensive Care Unit, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
| | - Fuyun He
- Department of Central Intensive Care Unit, Zhongshan Hospital Affiliated to Xiamen University, Xiamen, China
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Farrugia A, Mori F. Therapeutic solutions of human albumin - The possible effect of process-induced molecular alterations on clinical efficacy and safety. J Pharm Sci 2022; 111:1292-1308. [PMID: 35276228 DOI: 10.1016/j.xphs.2022.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 12/14/2022]
Abstract
Human albumin solutions were developed as therapeutic during the Second World War to address blood loss due to battlefield injury. This indication was based on the recognition that albumin provided most of the oncotic capacity of human plasma. For the succeeding sixty years, this formed the basis for the use of albumin in traumatology and emergency medicine. In more recent times, the pharmacological properties arising from albumin's complex structure have become a focus of attention by clinical researchers. In particular, albumin, through anti-inflammatory and anti-oxidant properties, has been proposed as an agent for the treatment of sepsis, cirrhosis and other inflammatory states. Some evidence for these indications has accrued from a number of small clinical trials and observational studies. These studies have not been confirmed in other large trials. Together with other investigators, we have shown that the process of plasma fractionation results in alterations in the structure of albumin, including those parts of the molecule involved in anti-oxidant and anti-inflammatory effects. Albumin products from diverse manufacturers show heterogeneity in their ability to address these effects. In this article, we review the historical development of albumin solutions, pointing out the variations in fractionation chemistries which different manufacturers have adopted. We suggest ways by which the manufacturing processes have contributed to variations in the physico-chemical properties of molecule. We review the outcomes of clinical studies assessing the role of albumin in ameliorating conditions such as sepsis and cirrhosis, and we speculate as to the extent which heterogeneity in the products may have contributed to variable clinical outcomes. Finally, we argue for a change in the perception of the plasma product industry and its regulatory overseers. Historically, albumin has been viewed as a generic commodity, with different preparations being interchangeable in their clinical application. We suggest that this implied biosimilarity is not necessarily applicable for different albumin solutions. The use of albumin, in indications other than its historical role as a plasma expander, can only be validated by clinical investigation of each separate albumin product.
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Affiliation(s)
- Albert Farrugia
- Faculty of Health and Medical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Perth, Australia.
| | - Filippo Mori
- Kedrion S.p.A., Research and Innovation Department, Via di Fondovalle, Loc., Bolognana 55027, Gallicano (LU), Italy
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Lv W, Wu Z, Lin Y, Jiang Y, Chen X, Zhu P, Wang S. Effect of circRNA_FOXO3 rs12196996 polymorphism and FOXO3 rs2232365 polymorphism on survival rate and severity of intensive care unit-acquired sepsis. Bioengineered 2022; 13:4821-4831. [PMID: 35156517 PMCID: PMC8974086 DOI: 10.1080/21655979.2022.2034567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The expression of circRNA_FOXO3 was found to be positively associated with the expression of Forkhead Box O3 (FOXO3), which is targeted and regulated by miR-23a. Polymorphisms in rs12196996 and rs2232365 have been reported in various diseases. In this study, we recruited intensive care unit (ICU)-acquired sepsis patients and grouped them according to their genotypes of rs12196996 and rs2232365. Quantitative real-time PCR was performed to analyze the expression of circRNA_FOXO3, FOXO3 mRNA, and miR-23a. ELISA was carried out to evaluate the abundance of cytokines and luciferase assay was used to explore the inhibitory role of miR-23a on circRNA_FOXO3 and FOXO3. Accordingly, we found that rs12196996 GG and rs2232365 AA were significantly correlated with prolonged survival of ICU-acquired sepsis patients. Rs12196996 GG and rs2232365 AA were also correlated with increased level of miR-23a, IL-10 and decreased level of TNF, IL-2, IFN, IL-6 and IL-1β in the peripheral blood cell samples of patients with ICU-acquired sepsis. The luciferase activity of wild-type (WT) circRNA_FOXO3 and FOXO3 were severely reduced by miR-23a. MiR-23a precursors could effectively suppress the expression of circRNA_FOXO3 and FOXO3 in the cells. Moreover, LPS-induced cell viability loss and dysregulation of cytokines were effectively restored by the knockdown of FOXO3 or circRNA_FOXO3 siRNA in the cells. This study revealed that the minor allele of rs12196996 polymorphism and rs2232365 polymorphism collaboratively contributed to the increased survival and suppressed severity of ICU-acquired sepsis.
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Affiliation(s)
- Wang Lv
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Zhang Wu
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Yue Lin
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Yingying Jiang
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Xinguo Chen
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Peng Zhu
- Department of Emergency, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
| | - Shengnan Wang
- Department of Rheumatology and Immunology, Wenzhou People’s Hospital, Wenzhou, Zhejiang, China
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Fang X, Duan SF, Hu ZY, Wang JJ, Qiu L, Wang F, Chen XL. Inhibition of Matrix Metalloproteinase-8 Protects Against Sepsis Serum Mediated Leukocyte Adhesion. Front Med (Lausanne) 2022; 9:814890. [PMID: 35145983 PMCID: PMC8821815 DOI: 10.3389/fmed.2022.814890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2021] [Accepted: 01/03/2022] [Indexed: 12/29/2022] Open
Abstract
Purpose Leukocyte adhesion to vascular and matrix Metalloproteinase-8 (MMP8) expression is increased in sepsis and associated with poor prognosis in sepsis patients. This study aimed to investigate the role of MMP8 in sepsis serum mediated leukocyte adhesion. Methods Bioinformatics analysis of GSE64457 and GSE65682 was performed to evaluate the role of MMP8 in the progression of sepsis. Expression of MMP8 in blood samples from patients with sepsis was detected by qRT-PCR and ELISA. Human umbilical vein endothelial cells (HUVECs) were treated with sepsis serum, control serum, and MMP8 inhibitor. Expression of vascular cell adhesion molecule-1 (VCAM-1) and intercellular cell adhesion molecule-1 (ICAM-1) were detected by qRT-PCR and ELISA, respectively. The protein expression of total p38, phosphorylated-p38, ERK1/2, and p-ERK1/2 was detected by Western blotting. Peripheral blood mononuclear cells (PBMCs) and polymorphonuclear neutrophils (PMNs) were incubated with the treated HUVECs to calculate leukocyte adhesion. Results Four hundred and twenty-nine differentially expressed genes (DEGs) and seven hub genes between sepsis patients and healthy controls were identified. GO function analysis of DEGs and hub genes indicated that the DEGs and hub genes were mainly enriched in neutrophil activation. MMP8 was selected as a key gene with an unfavorable prognosis in sepsis patients. The mRNA and protein expression of MMP8 in blood from sepsis patients were significantly higher than controls. Leukocyte adhesion and mRNA and protein expression of VCAM-1 and ICAM-1 were significantly increased in the sepsis serum group compared to that in the control group, as was the protein expression of p-p38 and p-ERK1/2. However, the MMP8 inhibitor suppressed the leukocyte adhesion promoted by sepsis serum by decreasing the expression of VCAM-1, ICAM-1, p-p38, and p-ERK1/2. Conclusion Our study indicated that MMP8 acts as a key gene in the development of sepsis, and sepsis serum promotes leukocyte adhesion to HUVECs via MMP8, which suggest that MMP8 might be a potential therapeutic target for sepsis.
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Lazzaro A, De Girolamo G, Filippi V, Innocenti GP, Santinelli L, Ceccarelli G, Trecarichi EM, Torti C, Mastroianni CM, d’Ettorre G, Russo A. The Interplay between Host Defense, Infection, and Clinical Status in Septic Patients: A Narrative Review. Int J Mol Sci 2022; 23:ijms23020803. [PMID: 35054993 PMCID: PMC8776148 DOI: 10.3390/ijms23020803] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 01/05/2022] [Accepted: 01/09/2022] [Indexed: 01/08/2023] Open
Abstract
Sepsis is a life-threatening condition that arises when the body's response to an infection injures its own tissues and organs. Despite significant morbidity and mortality throughout the world, its pathogenesis and mechanisms are not clearly understood. In this narrative review, we aimed to summarize the recent developments in our understanding of the hallmarks of sepsis pathogenesis (immune and adaptive immune response, the complement system, the endothelial disfunction, and autophagy) and highlight novel laboratory diagnostic approaches. Clinical management is also discussed with pivotal consideration for antimicrobic therapy management in particular settings, such as intensive care unit, altered renal function, obesity, and burn patients.
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Affiliation(s)
- Alessandro Lazzaro
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Gabriella De Girolamo
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Valeria Filippi
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Giuseppe Pietro Innocenti
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Letizia Santinelli
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Giancarlo Ceccarelli
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Enrico Maria Trecarichi
- Infectious and Tropical Disease Unit, Department of Medical and Surgical Sciences, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy; (E.M.T.); (C.T.)
| | - Carlo Torti
- Infectious and Tropical Disease Unit, Department of Medical and Surgical Sciences, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy; (E.M.T.); (C.T.)
| | - Claudio Maria Mastroianni
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Gabriella d’Ettorre
- Department of Public Health and Infectious Diseases, “Sapienza” University of Rome, 00161 Rome, Italy; (A.L.); (G.D.G.); (V.F.); (G.P.I.); (L.S.); (G.C.); (C.M.M.); (G.d.)
| | - Alessandro Russo
- Infectious and Tropical Disease Unit, Department of Medical and Surgical Sciences, “Magna Graecia” University of Catanzaro, 88100 Catanzaro, Italy; (E.M.T.); (C.T.)
- Correspondence:
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Lima C, Ahmed S, Xu Y, Muhamadali H, Parry C, McGalliard RJ, Carrol ED, Goodacre R. Simultaneous Raman and infrared spectroscopy: a novel combination for studying bacterial infections at the single cell level. Chem Sci 2022; 13:8171-8179. [PMID: 35919437 PMCID: PMC9278432 DOI: 10.1039/d2sc02493d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 06/17/2022] [Indexed: 02/06/2023] Open
Abstract
Sepsis is a life-threatening clinical condition responsible for approximately 11 million deaths worldwide. Rapid and accurate identification of pathogenic bacteria and its antimicrobial susceptibility play a critical role in reducing the morbidity and mortality rates related to sepsis. Raman and infrared spectroscopies have great potential to be used as diagnostic tools for rapid and culture-free detection of bacterial infections. Despite numerous reports using both methods to analyse bacterial samples, there is to date no study collecting both Raman and infrared signatures from clinical samples simultaneously due to instrument incompatibilities. Here, we report for the first time the use of an emerging technology that provides infrared signatures via optical photothermal infrared (O-PTIR) spectroscopy and Raman spectra simultaneously. We use this approach to analyse 12 bacterial clinical isolates including six isolates of Gram-negative and six Gram-positive bacteria commonly associated with bloodstream infection in humans. To benchmark the single cell spectra obtained by O-PTIR spectroscopy, infrared signatures were also collected from bulk samples via both FTIR and O-PTIR spectroscopies. Our findings showed significant similarity and high reproducibility in the infrared signatures obtained by all three approaches, including similar discrimination patterns when subjected to clustering algorithms. Principal component analysis (PCA) showed that O-PTIR and Raman data acquired simultaneously from bulk bacterial isolates displayed different clustering patterns due to the ability of both methods to probe metabolites produced by bacteria. By contrast, signatures of microbial pigments were identified in Raman spectra, providing complementary and orthogonal information compared to infrared, which may be advantageous as it has been demonstrated that certain pigments play an important role in bacterial virulence. We found that infrared spectroscopy showed higher sensitivity than Raman for the analysis of individual cells. Despite the different patterns obtained by using Raman and infrared spectral data as input for clustering algorithms, our findings showed high data reproducibility in both approaches as the biological replicates from each bacterial strain clustered together. Overall, we show that Raman and infrared spectroscopy offer both advantages and disadvantages and, therefore, having both techniques combined in one single technology is a powerful tool with promising applications in clinical microbiology. O-PTIR was used for simultaneous collection of infrared and Raman spectra from clinical pathogens associated with bloodstream infections.![]()
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Affiliation(s)
- Cassio Lima
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Shwan Ahmed
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
- Department of Environment and Quality Control, Kurdistan Institution for Strategic Studies and Scientific Research, Kurdistan Region, Iraq
| | - Yun Xu
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Howbeer Muhamadali
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
| | - Christopher Parry
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L69 7BE, UK
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
| | - Rachel J. McGalliard
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L69 7BE, UK
| | - Enitan D. Carrol
- Department of Clinical Infection, Microbiology and Immunology, Institute of Infection, Veterinary and Ecological Sciences, University of Liverpool, Liverpool, L69 7BE, UK
| | - Royston Goodacre
- Centre for Metabolomics Research, Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, L69 7ZB, UK
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Abiodun MT, Sadoh WE. Clinical predictors of circulatory failure and coexisting morbidities in children seen in an emergency room in Southern Nigeria. Niger J Clin Pract 2022; 25:1295-1300. [DOI: 10.4103/njcp.njcp_99_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dinakaran J, Yadav S, Patel S. Early lactate clearance in predicting in-hospital mortality in patients with sepsis admitted in the paediatric intensive care unit. ADVANCES IN HUMAN BIOLOGY 2022. [DOI: 10.4103/aihb.aihb_127_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ahmad FM, A Al-Binni M, Bani Hani A, Abu Abeeleh M, Abu-Humaidan AHA. Complement Terminal Pathway Activation is Associated with Organ Failure in Sepsis Patients. J Inflamm Res 2022; 15:153-162. [PMID: 35046691 PMCID: PMC8760944 DOI: 10.2147/jir.s344282] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 12/09/2021] [Indexed: 11/23/2022] Open
Abstract
Background Complement plays a pivotal role in the immune response to infection. Several studies demonstrated complement activation in sepsis, yet little is known of the relationship of complement terminal pathway activation and the clinical characteristics of sepsis patients. Therefore, we investigated serum C5, soluble C5b-9 (sC5b-9), and soluble CD59 (sCD59) and their relation to organ failure in sepsis patients in the intensive care unit (ICU). Methods In this prospective cohort study, all available patients admitted to the adult ICUs between June 2020 and January 2021 were included. Patients were divided into sepsis and non-sepsis groups according to the Sepsis-3 criteria, serum samples from both groups were investigated for the levels of C5, sC5b-9, and sCD59 using commercial sandwich ELISA kits. Results We analyzed 79 serum samples, 36 were from sepsis patients. We found that sepsis patients had significantly lower C5 (83.6± 28.4 vs 104.4± 32.0 µg/mL, p = 0.004) and higher sCD59 (380.7± 170.5 vs 288.9± 92.5 ng/mL, p = 0.016). sC5b-9, although higher in sepsis patients, did not reach statistical significance (1.5± 0.8 µg/mL vs 1.3± 0.7 µg/mL, p = 0.293). Sepsis patients who died during their ICU stay had significantly higher sCD59 compared to those who survived (437.0 ± 176.7 vs 267.8 ± 79.7 ng/mL, p = 0.003, respectively). Additionally, C5 and sCD59 both correlated to SOFA score in the sepsis group (rs = −0.44, P = 0.007 and = 0.43, P = 0.009, respectively), and a similar correlation was not found in the non-sepsis group. Discussion In sepsis patients, levels of C5 and sCD59, but not sC5b-9, correlated to the severity of organ damage measured by SOFA. A similar correlation was not found in non-sepsis patients. This indicated that organ damage associated with sepsis led to a more pronounced terminal pathway activation than in non-sepsis patients, it also indicated the potential of using C5 and sCD59 to reflect sepsis severity.
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Affiliation(s)
- Fatima M Ahmad
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
- Department of the Clinical Laboratory Sciences, School of Science, The University of Jordan, Amman, Jordan
| | - Maysaa’ A Al-Binni
- Department of the Clinical Laboratory Sciences, School of Science, The University of Jordan, Amman, Jordan
| | - Amjad Bani Hani
- Department of General Surgery, School of Medicine, The University of Jordan, Amman, Jordan
| | - Mahmoud Abu Abeeleh
- Department of General Surgery, School of Medicine, The University of Jordan, Amman, Jordan
| | - Anas H A Abu-Humaidan
- Department of Pathology, Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman, Jordan
- Correspondence: Anas HA Abu-Humaidan Tel +962779227922 Email
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Bohländer F, Weißmüller S, Riehl D, Gutscher M, Schüttrumpf J, Faust S. The Functional Role of IgA in the IgM/IgA-Enriched Immunoglobulin Preparation Trimodulin. Biomedicines 2021; 9:1828. [PMID: 34944644 PMCID: PMC8698729 DOI: 10.3390/biomedicines9121828] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 11/30/2021] [Accepted: 12/01/2021] [Indexed: 11/16/2022] Open
Abstract
In comparison to human immunoglobulin (Ig) G, antibodies of IgA class are not well investigated. In line with this, the functional role of the IgA component in IgM/IgA-enriched immunoglobulin preparations is also largely unknown. In recent years, powerful anti-pathogenic and immunomodulatory properties of human serum IgA especially on neutrophil function were unraveled. Therefore, the aim of our work is to investigate functional aspects of the trimodulin IgA component, a new plasma-derived polyvalent immunoglobulin preparation containing ~56% IgG, ~23% IgM and ~21% IgA. The functional role of IgA was investigated by analyzing the interaction of IgA with FcαRI, comparing trimodulin with standard intravenous IgG (IVIG) preparation and investigating Fc receptor (FcR)-dependent functions by excluding IgM-mediated effects. Trimodulin demonstrated potent immunomodulatory, as well as anti-pathogenic effects in our neutrophil model (neutrophil-like HL-60 cells). The IgA component of trimodulin was shown to induce a strong FcαRI-dependent inhibitory immunoreceptor tyrosine-based activation motif (ITAMi) signaling, counteract lipopolysaccharide-induced inflammation and mediate phagocytosis of Staphylococcus aureus. The fine-tuned balance between immunomodulatory and anti-pathogenic effects of trimodulin were shown to be dose-dependent. Summarized, our data demonstrate the functional role of IgA in trimodulin, highlighting the importance of this immunoglobulin class in immunoglobulin therapy.
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Affiliation(s)
- Fabian Bohländer
- Department of Analytical Development and Validation, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany; (F.B.); (D.R.); (M.G.)
| | - Sabrina Weißmüller
- Department of Translational Research, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany;
| | - Dennis Riehl
- Department of Analytical Development and Validation, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany; (F.B.); (D.R.); (M.G.)
| | - Marcus Gutscher
- Department of Analytical Development and Validation, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany; (F.B.); (D.R.); (M.G.)
| | - Jörg Schüttrumpf
- Corporate R&D, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany;
| | - Stefanie Faust
- Department of Analytical Development and Validation, Biotest AG, Landsteinerstraße 5, 63303 Dreieich, Germany; (F.B.); (D.R.); (M.G.)
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Miao H, Chen S, Ding R. Evaluation of the Molecular Mechanisms of Sepsis Using Proteomics. Front Immunol 2021; 12:733537. [PMID: 34745104 PMCID: PMC8566982 DOI: 10.3389/fimmu.2021.733537] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/08/2021] [Indexed: 12/12/2022] Open
Abstract
Sepsis is a complex syndrome promoted by pathogenic and host factors; it is characterized by dysregulated host responses and multiple organ dysfunction, which can lead to death. However, its underlying molecular mechanisms remain unknown. Proteomics, as a biotechnology research area in the post-genomic era, paves the way for large-scale protein characterization. With the rapid development of proteomics technology, various approaches can be used to monitor proteome changes and identify differentially expressed proteins in sepsis, which may help to understand the pathophysiological process of sepsis. Although previous reports have summarized proteomics-related data on the diagnosis of sepsis and sepsis-related biomarkers, the present review aims to comprehensively summarize the available literature concerning “sepsis”, “proteomics”, “cecal ligation and puncture”, “lipopolysaccharide”, and “post-translational modifications” in relation to proteomics research to provide novel insights into the molecular mechanisms of sepsis.
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Affiliation(s)
- He Miao
- Department of Intensive Care Unit, The First Hospital of China Medical University, Shenyang, China
| | - Song Chen
- Department of Trauma Intensive Care Unit, The First Affiliated Hospital of Hainan Medical University, Haikou, China.,Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, China
| | - Renyu Ding
- Department of Intensive Care Unit, The First Hospital of China Medical University, Shenyang, China
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Zhang L, Xu F, Li S, Zheng X, Zheng S, Liu H, Lyu J, Yin H. Influence of fluid balance on the prognosis of patients with sepsis. BMC Anesthesiol 2021; 21:269. [PMID: 34740312 PMCID: PMC8569078 DOI: 10.1186/s12871-021-01489-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/26/2021] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Early and timely fluid treatment or resuscitation are the basic measures for the active treatment of sepsis. Our aim is to further explore the relationship between fluid balance and prognosis in patients with sepsis on a daily basis for 5 days. METHODS Sepsis patients in eICU Collaborative Research Database were divided into the negative balance group (NB/-) and the positive balance group (PB/+) according to daily fluid balance. The primary outcome was in-hospital mortality. Survival differences between the groups were analyzed by using Cox regression. Then dose-response relationship between fluid balance and in-hospital mortality was studied using restricted cubic splines (RCSs). Furthermore, patients with fluid balance data for the previous three consecutive days were selected and divided into eight groups ("+/+/+", "+/+/-", "+/ -/-", "+/ -/+", "-/ -/-", "-/ -/+", "-/+/+", and "-/+/-"). Kaplan-Meier curves and Cox regression were used to show the survival difference between groups. RESULTS Our study, which included 19,557 patients in a multicenter database, showed that positive fluid balances on days 1, 2, and 3 after sepsis diagnosis were associated with poor prognosis with the HRs of 1.29 (1.20,1.40), 1.13 (1.01,1.27), and 1.25 (1.08,1.44), respectively, while the fluid balance on days 4 and 5 had no effect on the primary outcome. Then RCSs showed an overall trend that the risk of in-hospital mortality on days 1, 2, and 3 increased with increasing fluid balance. For three consecutive days of fluid balance, we studied 9205 patients and Kaplan-Meier curves revealed survival differences among patients in the eight groups. The cox model demonstrated that compared with the "+/+/+" group, the "+/ -/-", "-/ -/-", "-/ -/+", "-/+/+", and "-/+/-" groups had a lower risk of in-hospital mortality, with HRs of 0.65 (0.45,0.93), 0.72 (0.60,0.86), 0.63 (0.43,0.93), 0.69 (0.48,0.98), and 0.63 (0.42,0.96), respectively. CONCLUSIONS In patients with sepsis, positive fluid balance on days 1, 2, and 3 was associated with adverse outcomes. For patients with fluid balance for three consecutive days, the "+/-/-", "-/ -/-", "-/-/+", "-/+/+", and "-/+/-" groups were less likely to die in hospital than the "+/+/+" group.
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Affiliation(s)
- Luming Zhang
- Intensive Care Unit, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, Guangdong Province, People's Republic of China.,Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Fengshuo Xu
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China.,School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi Province, China
| | - Shaojin Li
- Department of Orthopaedics, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Xiaoyu Zheng
- Intensive Care Unit, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, Guangdong Province, People's Republic of China
| | - Shuai Zheng
- School of Public Health, Shannxi University of Chinese Medicine, Xianyang, Shaanxi Province, China
| | - Hui Liu
- Intensive Care Unit, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, Guangdong Province, People's Republic of China
| | - Jun Lyu
- Department of Clinical Research, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong Province, China
| | - Haiyan Yin
- Intensive Care Unit, The First Affiliated Hospital of Jinan University, 510630, Guangzhou, Guangdong Province, People's Republic of China.
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The Value of a Complete Blood Count (CBC) for Sepsis Diagnosis and Prognosis. Diagnostics (Basel) 2021; 11:diagnostics11101881. [PMID: 34679578 PMCID: PMC8534992 DOI: 10.3390/diagnostics11101881] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/08/2021] [Accepted: 10/10/2021] [Indexed: 12/28/2022] Open
Abstract
Sepsis represents an important global health burden due to its high mortality and morbidity. The rapid detection of sepsis is crucial in order to prevent adverse outcomes and reduce mortality. However, the diagnosis of sepsis is still challenging and many efforts have been made to identify reliable biomarkers. Unfortunately, many investigated biomarkers have several limitations that do not support their introduction in clinical practice, such as moderate diagnostic and prognostic accuracy, long turn-around time, and high-costs. Complete blood count represents instead a precious test that provides a wealth of information on individual health status. It can guide clinicians to early-identify patients at high risk of developing sepsis and to predict adverse outcomes. It has several advantages, being cheap, easy-to-perform, and available in all wards, from the emergency department to the intensive care unit. Noteworthy, it represents a first-level test and an alteration of its parameters must always be considered within the clinical context, and the eventual suspect of sepsis must be confirmed by more specific investigations. In this review, we describe the usefulness of basic and new complete blood count parameters as diagnostic and prognostic biomarkers of sepsis.
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Feng J, Liu L, He Y, Wang M, Zhou D, Wang J. Novel insights into the pathogenesis of virus-induced ARDS: review on the central role of the epithelial-endothelial barrier. Expert Rev Clin Immunol 2021; 17:991-1001. [PMID: 34224287 DOI: 10.1080/1744666x.2021.1951233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Introduction: Respiratory viruses can directly or indirectly damage the pulmonary defense barrier, potentially contributing to acute respiratory distress syndrome (ARDS). Despite developments in the understanding of the pathogenesis of ARDS, the underlying pathophysiology still needs to be elucidated.Areas covered: The PubMed database was reviewed for relevant papers published up to 2021. This review summarizes the currently immunological and clinical studies to provide a systemic overview of the epithelial-endothelial barrier, given the recently published immunological profiles upon viral pneumonia, and the potentially detrimental contribution to respiratory function caused by damage to this barrier.Expert opinion: The biophysical structure of host pulmonary defense is intrinsically linked with the ability of alveolar epithelial and capillary endothelial cells, known as the epithelial-endothelial barrier, to respond to, and instruct the delicate immune system to protect the lungs from infections and injuries. Recently published immunological profiles upon viral infection, and its contributions to the damage of respiratory function, suggest a central role for the pulmonary epithelial and endothelial barrier in the pathogenesis of ARDS. We suggest a central role and common pathways by which the epithelial-endothelial barrier contributes to the pathogenesis of ARDS.
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Affiliation(s)
- Jun Feng
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lina Liu
- Department of Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yang He
- Department of Cancer Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Min Wang
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Daixing Zhou
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Junshuai Wang
- Department of Critical Care Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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