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Suruli PK, Rangappa P, Jacob I, Rao K, Shivashanker S. Zinc Deficiency in Critically Ill Patients: Impact on Clinical Outcome. Cureus 2024; 16:e61690. [PMID: 38975455 PMCID: PMC11224045 DOI: 10.7759/cureus.61690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/04/2024] [Indexed: 07/09/2024] Open
Abstract
Background Zinc is a trace element essential for the normal functioning of many vital enzymes and organ systems. Studies examining the rates and degrees of zinc deficiency and its consequences in patients with critical illnesses remain scarce. Materials and methods This is a prospective observational study assessing zinc deficiency in critically ill adult patients admitted to a tertiary care intensive care unit (ICU) and its impact on clinical outcomes. Patients were divided into those with normal (≥ 71 µg/dl) and low (≤ 70 µg/dl) zinc levels. Zinc-deficient patients were further divided into mild, moderate, and severe zinc deficiency groups based on zinc levels of 61-70 µg/dl, 51-60 µg/dl, and below 51 µg/dl, respectively. The primary outcome assessed was ICU mortality, and the secondary outcomes were ICU length of stay (LOS), duration of invasive mechanical ventilation (IMV), acute kidney injury (AKI) at admission, need for non-invasive ventilation (NIV), renal replacement therapy (RRT), or vasopressors during the course of the ICU. Other parameters compared included APACHE (Acute Physiology and Chronic Health Evaluation) II, SOFA (Sequential Organ Failure Assessment) score on day 1, and levels of lactate, procalcitonin, calcium, magnesium, phosphate, and serum albumin. The study also compared the mean zinc levels in patients with low and high SOFA scores (scores up to 7 vs. 8 and above) and low and high APACHE II values (scores up to 15 vs. 16 and above). Results A total of 50 patients were included, of whom 43 (86%) were zinc deficient. Mortality in zinc-deficient and normal zinc-level patients was 33% and 43%, respectively (p = 0.602). Patients with zinc deficiency were also older (mean age 69 vs. 49 years, p = 0.02). There was no difference in secondary outcome parameters, except for more zinc-deficient patients needing RRT. Twenty-six of the zinc-deficient patients had severe zinc deficiency, ten moderate, and seven mild (p = 0.663). ICU mortality was approximately 42%, 10%, and 29% in the severe, moderate, and mild deficiency groups, respectively (p = 0.092). Zinc levels were similar between those with low and high APACHE II scores (mean 47.9 vs. 45.5 µg/dl, p = 0.606) as well as between low and high SOFA scores (mean 47.8 vs. 45.7 µg/dl, p = 0.054). Conclusion The present study suggests that zinc deficiency is very common in critically ill patients but does not correlate with their severity of illness, nor does it lead to a poorer outcome in these patients. However, further studies with a larger cohort of patients would be required to make definitive conclusions.
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Affiliation(s)
- Pradeep K Suruli
- Department of Critical Care Medicine, Manipal Hospital Yeshwantpur, Bengaluru, IND
| | - Pradeep Rangappa
- Department of Critical Care Medicine, Manipal Hospital Yeshwantpur, Bengaluru, IND
| | - Ipe Jacob
- Department of Critical Care Medicine, Manipal Hospital Yeshwantpur, Bengaluru, IND
| | - Karthik Rao
- Department of Critical Care Medicine, Manipal Hospital Yeshwantpur, Bengaluru, IND
| | - Sweta Shivashanker
- Department of Biochemistry, Manipal Hospital Yeshwantpur, Bengaluru, IND
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Fan YG, Wu TY, Zhao LX, Jia RJ, Ren H, Hou WJ, Wang ZY. From zinc homeostasis to disease progression: Unveiling the neurodegenerative puzzle. Pharmacol Res 2024; 199:107039. [PMID: 38123108 DOI: 10.1016/j.phrs.2023.107039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/16/2023] [Accepted: 12/10/2023] [Indexed: 12/23/2023]
Abstract
Zinc is a crucial trace element in the human body, playing a role in various physiological processes such as oxidative stress, neurotransmission, protein synthesis, and DNA repair. The zinc transporters (ZnTs) family members are responsible for exporting intracellular zinc, while Zrt- and Irt-like proteins (ZIPs) are involved in importing extracellular zinc. These processes are essential for maintaining cellular zinc homeostasis. Imbalances in zinc metabolism have been linked to the development of neurodegenerative diseases. Disruptions in zinc levels can impact the survival and activity of neurons, thereby contributing to the progression of neurodegenerative diseases through mechanisms like cell apoptosis regulation, protein phase separation, ferroptosis, oxidative stress, and neuroinflammation. Therefore, conducting a systematic review of the regulatory network of zinc and investigating the relationship between zinc dysmetabolism and neurodegenerative diseases can enhance our understanding of the pathogenesis of these diseases. Additionally, it may offer new insights and approaches for the treatment of neurodegenerative diseases.
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Affiliation(s)
- Yong-Gang Fan
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China.
| | - Ting-Yao Wu
- First Affiliated Hospital of Jinzhou Medical University, Jinzhou 121000, China
| | - Ling-Xiao Zhao
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China
| | - Rong-Jun Jia
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China
| | - Hang Ren
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China
| | - Wen-Jia Hou
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China
| | - Zhan-You Wang
- Key Laboratory of Medical Cell Biology of Ministry of Education, Key Laboratory of Major Chronic Diseases of Nervous System of Liaoning Province, Health Sciences Institute of China Medical University, Shenyang 110122, China.
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3
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Rodelgo Jiménez L, Anchuelo AC, Soler PM, Muñoz RP, Ferrer MF, Fornie IS, Mosquera MG, González MMN. Zinc levels of patients with a moderate to severe COVID-19 infection at hospital admission and after 4th days of ward hospitalization and their clinical outcome. J Trace Elem Med Biol 2023; 79:127200. [PMID: 37229980 PMCID: PMC10181947 DOI: 10.1016/j.jtemb.2023.127200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/08/2023] [Accepted: 05/12/2023] [Indexed: 05/27/2023]
Abstract
BACKGROUND Previous studies associate the disturbance of the Zinc (Zn) status with the severity of the disease and the inflammatory process in the critically ill patient. This decrease in Zn concentrations is an indicator of poor prognosis. Our aim was to evaluate Zn levels at admission and after four days, and to study if lower Zn levels at those days were related to a worse clinical outcome. MATERIAL AND METHODS Observational cohort study at a tertiary Hospital. Recruitment period: 09/04/2020-04/24/2021. Clinical information on hypertension, diabetes mellitus (DM), chronic obstructive pulmonary disease (COPD), or bronchial asthma was collected. Obesity was defined as BMI ≥ 30 Kg/m2. Blood extraction was performed at admission and after 4 days. Zn was measured by atomic absorption using a flame method. Worse clinical outcome was defined as death during admission, intensive critical care unit admission or receiving supplemental oxygen through noninvasive or invasive ventilator care. RESULTS 129 subjects were invited to participate but only 100 subjects completed the survey. According to ROC curve [AUC= 0.63 (95% CI 0.60-0.66)], Zn < 79 μg/dL showed the best performance to detect a worse outcome (Sn=0.85; Sp=0.36). Patients with Zn < 79 μg/dL were older (70 vs 61 y; p = 0.002) with no differences by sex. Most patients presented with fever, dysthermic symptoms and cough, without differences between groups. Pre-existing comorbid conditions did not differ significantly between groups. Less obese subjects were found in the Zn < 79 μg/dL group (21.4 vs 43.3%, p = 0.025). In the univariate analysis, Zn < 79 μg/dL at hospital admission was related to a worse outcome (p = 0.044), but after adjusting for age, C-reactive protein, and obesity there was no difference, but a tendency towards a worse prognosis [OR 2.20 (0.63-7.70), p = 0.215]. Zn levels increased in both groups after 4 days (66.6 vs 73.1 μg/dL at admission, and 72.2 vs 80.5 μg/dL at 4th day), with ns. difference (p = 0.214). CONCLUSION Zn < 79 μg/dL at admission for a moderate to severe COVID-19 infection could be related to a worse outcome, although after adjustment for age, C-reactive protein levels and obesity, this Zn level threshold did not show statistically significant difference in the composite end point, but a tendency towards a worse prognosis. In addition, patients with the best clinical evolution showed higher serum Zn levels at 4th day after hospital admission than the patients with a worse prognosis.
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Affiliation(s)
- Laura Rodelgo Jiménez
- Instituto de Medicina de Laboratorio (IML), Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Arturo Corbatón Anchuelo
- Grupo de Riesgo Vascular, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain; Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain.
| | - Pablo Matías Soler
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Raúl Perales Muñoz
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Manuel Fuentes Ferrer
- Unidad de Investigación (UI) del Hospital Universitario Nuestra Señora de Candelaria (HUNSC-GAP), Santa Cruz de Tenerife, Spain
| | - Iñigo Sagastagoitia Fornie
- Grupo de Infecciosas/VIH, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Marina Gil Mosquera
- Grupo de Patología de Urgencias y Emergencias, Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Mercedes Martínez-Novillo González
- Instituto de Medicina de Laboratorio (IML), Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
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Silveira TT, Stefenon DO, Júnior EL, Konstantyner T, Leite HP, Moreno YMF. Assessment of trace elements in critically ill patients with systemic inflammatory response syndrome: A systematic review. J Trace Elem Med Biol 2023; 78:127155. [PMID: 36948044 DOI: 10.1016/j.jtemb.2023.127155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/21/2023] [Accepted: 03/13/2023] [Indexed: 03/17/2023]
Abstract
BACKGROUND Zinc (Zn), copper (Cu), and selenium (Se) are involved in immune and antioxidant defense. Their role in systemic inflammatory response syndrome (SIRS) treatment and outcomes remains unclear. This systematic review aimed to describe trace element concentrations in different types of biological samples and their relationship with morbidity and mortality in patients with SIRS. METHODS Literature was systematically reviewed according to the preferred reporting items for systematic reviews and meta-analyses (PRISMA). The search results were screened and evaluated for eligibility, and data were extracted and summarized in tables and figures. RESULTS Most of the 38 included studies evaluated Se (75%), followed by Zn (42%) and Cu (22%). Plasma was the main biological sample evaluated (58%). Thirteen studies found lower plasma/serum concentrations of Zn, Se, and Cu in SIRS patients than in controls upon admission, 11 studies on adults (intensive care unit-ICU) and two in pediatric ICU (PICU). Three ICU studies found no difference in erythrocyte trace element concentrations in patients with SIRS. In all studies, the two main outcomes investigated were organ failure and mortality. In seven ICU studies, patients with lower plasma or serum Zn/Se levels had higher mortality rates. A study conducted in the PICU reported an association between increased Se variation and lower 28-day mortality. In an ICU study, lower erythrocyte selenium levels were associated with higher ICU/hospital mortality, after adjustment. Five ICU studies associated lower plasma/serum Zn/Se levels with higher organ failure scores and one PICU study showed an association between higher erythrocyte Se levels and lower organ dysfunction scores. CONCLUSION There was no difference in erythrocyte Se levels in patients with SIRS. Serum/Plasma Zn and serum/plasma/erythrocyte Se are associated with organ dysfunction, mortality, and inflammation. Trace element deficiencies should be diagnosed by erythrocyte, or complementary measurements in the presence of inflammation.
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Affiliation(s)
- Taís Thomsen Silveira
- Graduate Program in Nutrition, Federal University of Santa Catarina, Santa Catarina, Brazil
| | | | - Emílio Lopes Júnior
- Discipline of Nutrition and Metabolism, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Tulio Konstantyner
- Discipline of Nutrition and Metabolism, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil; Department of Pediatrics, Hospital Geral de Itapecerica da Serra-HGIS, Itapecerica da Serra, São Paulo, Brazil
| | - Heitor Pons Leite
- Discipline of Nutrition and Metabolism, Department of Pediatrics, Universidade Federal de São Paulo, São Paulo, Brazil
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5
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Protective role of zinc in the pathogenesis of respiratory diseases. Eur J Clin Nutr 2022; 77:427-435. [PMID: 35982216 PMCID: PMC9387421 DOI: 10.1038/s41430-022-01191-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 07/19/2022] [Accepted: 07/21/2022] [Indexed: 11/29/2022]
Abstract
Respiratory diseases remain a major cause of morbidity and mortality worldwide. An imbalance of zinc, an essential trace element, is associated with a variety of lung diseases. We reviewed and summarized recent research (human subjects, animal studies, in vitro studies) on zinc in respiratory diseases to explore the protective mechanism of zinc from the perspective of regulation of oxidative stress, inflammation, lipid metabolism, and apoptosis. In the lungs, zinc has anti-inflammatory, antioxidant, and antiviral effects; can inhibit cancer cell migration; can regulate lipid metabolism and immune cells; and exerts other protective effects. Our comprehensive evaluation highlights the clinical and experimental effects of zinc in the pathogenesis of respiratory diseases. Our analysis also provides insight into the clinical application of zinc-targeted therapy for respiratory diseases.
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Jørgensen LH, Sørensen MD, Lauridsen MM, Rasmussen LM, Alfiler RM, Iversen VN, Schaffalitzky de Muckadell OB. Albumin-corrected Zn and available free Zn-binding capacity as indicators of Zn status - potential for clinical implementation. Scandinavian Journal of Clinical and Laboratory Investigation 2022; 82:261-266. [PMID: 35758940 DOI: 10.1080/00365513.2022.2064764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
We have established and describe two measurement procedures to diagnose possible zinc (Zn) deficiency; albumin-corrected Zn concentration and available free Zn-binding capacity. Reference intervals for both biomarkers were established in healthy adults from the Danish population. The clinical usefulness of the measurement procedures was investigated in patients with cirrhosis and in patients given parenteral nutrition due to short bowel syndrome. The results of both methods indicate that there is a risk of overdiagnosing Zn deficiency based on low plasma Zn concentrations. Needless Zn supplementation may thus be avoided by using the albumin-corrected Zn concentration or available free Zn-binding capacity.
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Affiliation(s)
- Louise H Jørgensen
- Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark.,Institue of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Mia D Sørensen
- Institue of Clinical Research, University of Southern Denmark, Odense, Denmark.,Department of Medical Gastroenterology S, Odense University Hospital, Odense, Denmark
| | - Mette M Lauridsen
- Department of Gastroenterology, Hospital South West Jutland, Esbjerg, Denmark
| | - L M Rasmussen
- Department of Clinical Biochemistry, Odense University Hospital, Odense, Denmark.,Institue of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Rose M Alfiler
- Department of Medical Gastroenterology S, Odense University Hospital, Odense, Denmark
| | - Vilde N Iversen
- Department of Medical Gastroenterology S, Odense University Hospital, Odense, Denmark
| | - Ove B Schaffalitzky de Muckadell
- Institue of Clinical Research, University of Southern Denmark, Odense, Denmark.,Department of Medical Gastroenterology S, Odense University Hospital, Odense, Denmark
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7
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Willekens J, Runnels LW. Impact of Zinc Transport Mechanisms on Embryonic and Brain Development. Nutrients 2022; 14:nu14122526. [PMID: 35745255 PMCID: PMC9231024 DOI: 10.3390/nu14122526] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/09/2022] [Accepted: 06/09/2022] [Indexed: 12/04/2022] Open
Abstract
The trace element zinc (Zn) binds to over ten percent of proteins in eukaryotic cells. Zn flexible chemistry allows it to regulate the activity of hundreds of enzymes and influence scores of metabolic processes in cells throughout the body. Deficiency of Zn in humans has a profound effect on development and in adults later in life, particularly in the brain, where Zn deficiency is linked to several neurological disorders. In this review, we will summarize the importance of Zn during development through a description of the outcomes of both genetic and early dietary Zn deficiency, focusing on the pathological consequences on the whole body and brain. The epidemiology and the symptomology of Zn deficiency in humans will be described, including the most studied inherited Zn deficiency disease, Acrodermatitis enteropathica. In addition, we will give an overview of the different forms and animal models of Zn deficiency, as well as the 24 Zn transporters, distributed into two families: the ZIPs and the ZnTs, which control the balance of Zn throughout the body. Lastly, we will describe the TRPM7 ion channel, which was recently shown to contribute to intestinal Zn absorption and has its own significant impact on early embryonic development.
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8
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Rodic S, McCudden C, van Walraven C. The Prognostic Value of Serum Zinc Levels in Acutely Hospitalized Patients: a Systematic Review. Biol Trace Elem Res 2021; 199:4447-4457. [PMID: 33471277 DOI: 10.1007/s12011-021-02575-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 01/03/2021] [Indexed: 10/22/2022]
Abstract
Several small studies have identified possible associations between low serum zinc levels and worse outcomes in patients acutely hospitalized for a variety of diseases. This study systematically evaluated all published literature to determine whether serum zinc might independently predict important outcomes in hospitalized patients. PubMed, Embase, and Cochrane Libraries databases were searched from 1970 to 2019 to identify all citations having the keyword "zinc" with hospital outcomes. Studies were included if they measured the association between serum zinc levels in non-electively hospitalized patients with survival, length of stay, or unplanned readmission. Data were double-abstracted to evaluate the association between zinc levels and these outcomes. Our search returned 1091 citations of which 12 studies met the inclusion criteria. Studies were small (median 112.5 patients) using unspecified sampling methods. Seven studies were restricted to critically ill patients. Mean zinc levels ranged from 27.5 to 85.3 μg/dL. Baseline mean zinc levels were significantly lower (p < 0.05) in patients who eventually died in 1 of 7 studies. Five of seven studies found significantly increased risk of death in hospital with lower zinc levels. Associations between zinc levels and critical care or hospital length of stay were unclear. In 1 study, lower zinc levels were associated with a significantly increased risk of unplanned readmission. Current studies measuring the association between serum zinc levels and outcomes in acutely hospitalized patients are limited by their sample sizes, select patient populations, and limited statistical analyses. The association of zinc levels with hospital patient outcomes is unclear.
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Affiliation(s)
- Stefan Rodic
- Department of Medicine, University of Ottawa, Ottawa, Canada
| | - Christopher McCudden
- Department of Pathology & Lab. Medicine, University of Ottawa, Ottawa, Canada
- Division of Biochemistry, The Ottawa Hospital, Ottawa, Canada
| | - Carl van Walraven
- Medicine and Epidemiology & Community Medicine, University of Ottawa, Carling Ave, Ottawa, ON, K1Y 4E9, Canada.
- Ottawa Hospital Research Institute, Ottawa, Canada.
- Institute for Clinical Evaluative Sciences, Toronto, Canada.
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Serum zinc and copper in people with COVID-19 and zinc supplementation in parenteral nutrition. Nutrition 2021; 91-92:111467. [PMID: 34592694 PMCID: PMC8406548 DOI: 10.1016/j.nut.2021.111467] [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: 03/23/2021] [Revised: 06/10/2021] [Accepted: 08/24/2021] [Indexed: 12/25/2022]
Abstract
Objectives Zinc and copper are important to protect cells from oxidative stress and to enhance immunity. An association between low zinc levels and the severity of acute respiratory distress syndrome has been shown for people with COVID-19. We aimed to study serum zinc and copper concentrations in people with severe COVID-19 and zinc supplementation in parenteral nutrition (PN). Methods Thirty-five people with COVID-19 in need of PN were studied in a retrospective design. Serum samples were collected at three time points: at the start of PN, between 3 and 7 d after, and at the end of PN. Results Participants were on PN for a mean of 14 d, with a mean (± SD) daily supplemental zinc of 14.8 ± 3.7 mg/d. Serum zinc increased during PN administration from 98.8 ± 22.8 to 114.1 ± 23.3 µg/dL (Wilks’ λ = 0.751, F = 5.459, P = 0.009). Conversely, serum copper did not vary from baseline (107.9 ± 34.2 µg/dL) to the end of the study (104.5 ± 37.4 µg/dL, Wilks’ λ = 0.919, F = 1.453, P = 0.248). Serum zinc within the first week after starting PN and at the end of PN inversely correlated with total hospital stay (r = −0.413, P = 0.014, and r = −0.386, P = 0.022, respectively). Participants in critical condition presented lower serum copper (z = 2.615, P = 0.007). Mortality was not associated with supplemental zinc or with serum zinc or copper concentrations at any time of the study (P > 0.1 for all analyses). Conclusions Serum zinc concentrations during PN support were inversely associated with length of hospital stay but not with mortality. Serum copper concentrations were lower in participants in critical condition but not associated with prognosis.
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Hu Y, Wang Y, Wang X, Wu X, Fu L, Liu X, Wen Y, Sheng J, Zhang J. The Role of Cation Diffusion Facilitator CDF-1 in Lipid Metabolism in Caenorhabditis elegans. G3-GENES GENOMES GENETICS 2021; 11:6237889. [PMID: 33871589 PMCID: PMC8495940 DOI: 10.1093/g3journal/jkab120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/08/2021] [Indexed: 11/20/2022]
Abstract
Zinc is one of the most important trace elements as it plays a vital role in many biological processes. As well, aberrant zinc metabolism has been implicated in lipid-related metabolic diseases. Previously, we showed that zinc antagonizes iron to regulate sterol regulatory element-binding proteins and the stearoyl-CoA desaturase (SREBP-SCD) pathway in lipid metabolism in the model organism Caenorhabditis elegans. In this study, we present the identification of another cation diffusion facilitator, CDF-1, which regulates lipid metabolism along with SUR-7 in response to zinc. Inactivation of SBP-1, the only homolog of SREBPs, leads to an increased zinc level but decreased lipid accumulation. However, either the cdf-1(n2527) or sur-7(tm6523) mutation could successfully restore the altered fatty acid profile, fat content, and zinc level of the sbp-1(ep79) mutant. Furthermore, we found that CDF-1/SUR-7 may functionally bypass SBP-1 to directly affect the conversion activity of SCD in the biosynthesis of unsaturated fatty acids and lipid accumulation. Collectively, these results consistently support the link between zinc homeostasis and lipid metabolism via the SREBP-SCD axis by the cation diffusion facilitators CDF-1 and SUR-7.
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Affiliation(s)
- Ying Hu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Yanli Wang
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, China
| | - Xuanjun Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Xiaoyun Wu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Lin Fu
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, China
| | - Xiayu Liu
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, China
| | - Yu Wen
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, China
| | - Jun Sheng
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, 650201, China
| | - Jingjing Zhang
- Center for Life Sciences, School of Life Sciences, Yunnan University, Kunming, Yunnan 650091, China
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Heller RA, Sun Q, Hackler J, Seelig J, Seibert L, Cherkezov A, Minich WB, Seemann P, Diegmann J, Pilz M, Bachmann M, Ranjbar A, Moghaddam A, Schomburg L. Prediction of survival odds in COVID-19 by zinc, age and selenoprotein P as composite biomarker. Redox Biol 2021; 38:101764. [PMID: 33126054 PMCID: PMC7574778 DOI: 10.1016/j.redox.2020.101764] [Citation(s) in RCA: 110] [Impact Index Per Article: 36.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/07/2020] [Accepted: 10/16/2020] [Indexed: 12/22/2022] Open
Abstract
SARS-CoV-2 infections cause the current coronavirus disease (COVID-19) pandemic and challenge the immune system with ongoing inflammation. Several redox-relevant micronutrients are known to contribute to an adequate immune response, including the essential trace elements zinc (Zn) and selenium (Se). In this study, we tested the hypothesis that COVID-19 patients are characterised by Zn deficiency and that Zn status provides prognostic information. Serum Zn was determined in serum samples (n = 171) collected consecutively from patients surviving COVID-19 (n = 29) or non-survivors (n = 6). Data from the European Prospective Investigation into Cancer and Nutrition (EPIC) study were used for comparison. Zn concentrations in patient samples were low as compared to healthy subjects (mean ± SD; 717.4 ± 246.2 vs 975.7 ± 294.0 μg/L, P < 0.0001). The majority of serum samples collected at different time points from the non-survivors (25/34, i.e., 73.5%) and almost half of the samples collected from the survivors (56/137, i.e., 40.9%) were below the threshold for Zn deficiency, i.e., below 638.7 μg/L (the 2.5th percentile in the EPIC cohort). In view that the Se status biomarker and Se transporter selenoprotein P (SELENOP) is also particularly low in COVID-19, we tested the prevalence of a combined deficit, i.e., serum Zn below 638.7 μg/L and serum SELENOP below 2.56 mg/L. This combined deficit was observed in 0.15% of samples in the EPIC cohort of healthy subjects, in 19.7% of the samples collected from the surviving COVID-19 patients and in 50.0% of samples from the non-survivors. Accordingly, the composite biomarker (SELENOP and Zn with age) proved as a reliable indicator of survival in COVID-19 by receiver operating characteristic (ROC) curve analysis, yielding an area under the curve (AUC) of 94.42%. We conclude that Zn and SELENOP status within the reference ranges indicate high survival odds in COVID-19, and assume that correcting a diagnostically proven deficit in Se and/or Zn by a personalised supplementation may support convalescence.
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Affiliation(s)
- Raban Arved Heller
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany; HTRG, Heidelberg Trauma Research Group, Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, D-69118, Heidelberg, Germany; Department of General Practice and Health Services Research, University Hospital Heidelberg, D-69120, Heidelberg, Germany.
| | - Qian Sun
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
| | - Julian Hackler
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
| | - Julian Seelig
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
| | - Linda Seibert
- ATORG, Aschaffenburg Trauma and Orthopedic Research Group, Center for Orthopedics, Trauma Surgery and Sports Medicine, Hospital Aschaffenburg-Alzenau, D-63739, Aschaffenburg, Germany.
| | - Asan Cherkezov
- ATORG, Aschaffenburg Trauma and Orthopedic Research Group, Center for Orthopedics, Trauma Surgery and Sports Medicine, Hospital Aschaffenburg-Alzenau, D-63739, Aschaffenburg, Germany.
| | - Waldemar B Minich
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
| | - Petra Seemann
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
| | - Joachim Diegmann
- ATORG, Aschaffenburg Trauma and Orthopedic Research Group, Center for Orthopedics, Trauma Surgery and Sports Medicine, Hospital Aschaffenburg-Alzenau, D-63739, Aschaffenburg, Germany.
| | - Maximilian Pilz
- Institute of Medical Biometry and Informatics, Heidelberg University Hospital, Im Neuenheimer Feld 130.3, D-69120, Heidelberg, Germany.
| | - Manuel Bachmann
- ATORG, Aschaffenburg Trauma and Orthopedic Research Group, Center for Orthopedics, Trauma Surgery and Sports Medicine, Hospital Aschaffenburg-Alzenau, D-63739, Aschaffenburg, Germany.
| | - Alireza Ranjbar
- Department of Allergy and Immunology, Mashhad University of Medical Sciences, Mashhad, Iran; Institute of Interventional Allergology und Immunology, Bonn, Cologne, Germany.
| | - Arash Moghaddam
- ATORG, Aschaffenburg Trauma and Orthopedic Research Group, Center for Orthopedics, Trauma Surgery and Sports Medicine, Hospital Aschaffenburg-Alzenau, D-63739, Aschaffenburg, Germany
| | - Lutz Schomburg
- Institute for Experimental Endocrinology, Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, And Berlin Institute of Health, D-13353, Berlin, Germany.
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12
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Gonçalves TJM, Gonçalves SEAB, Guarnieri A, Risegato RC, Guimarães MP, de Freitas DC, Razuk-Filho A, Junior PBB, Parrillo EF. Association Between Low Zinc Levels and Severity of Acute Respiratory Distress Syndrome by New Coronavirus SARS-CoV-2. Nutr Clin Pract 2020; 36:186-191. [PMID: 33368619 DOI: 10.1002/ncp.10612] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND We verify the prevalence of low zinc levels among critically ill patients infected by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in the intensive care unit (ICU) who required invasive mechanical ventilation, as well as its association with severity of acute respiratory distress syndrome (ARDS). METHODS This is an observational study composed of patients admitted to the ICU. Demographics, anthropometric data for calculating body mass index (BMI), and laboratory data were obtained at admission: blood count, ferritin, arterial blood gas, serum zinc levels, and C-reactive protein. Also, arterial oxygen tension (PaO2 ) divided by fractional inspired oxygen (FiO2 ) was calculated by the first arterial blood gas after intubation. A diagnosis of severe ARDS was determined if the PaO2 /FiO2 ratio was ≤100 mm Hg. Low zinc levels were established if zinc levels were <70 μg/dL. RESULTS A total of 269 patients met inclusion criteria; 51.3% were men; median age was 74 (66-81) years; 91.1% (245 of 269) were elderly. The median BMI was 30.1 (24.7-32.1) kg/m2 , with 59.9% (161 of 269) of patients having overweight and obesity. The prevalence of low zinc levels was 79.6% (214 of 269) and severe ARDS was 56.5% (152 of 269). There was an association of low zinc levels and severe ARDS (odds ratio [OR], 14.4; 95% CI, 6.2-33.5; P < .001), even after adjusting for baseline variables (OR, 15.4; 95% CI, 6.5-36.3; P < .001). CONCLUSION Critically ill patients infected by SARS-CoV-2 with severe ARDS have a high prevalence of low serum zinc levels.
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Affiliation(s)
- Thiago Jose Martins Gonçalves
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | | | - Andreia Guarnieri
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Rodrigo Cristovão Risegato
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Maysa Penteado Guimarães
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Daniella Cabral de Freitas
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Alvaro Razuk-Filho
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Pedro Batista Benedito Junior
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
| | - Eduardo Fagundes Parrillo
- Department of Nutrology and Clinical Nutrition, Sancta Maggiore Hospital, Prevent Senior Private Health Operator, São Paulo, Brazil
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13
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Zheng L, Ma Y, Zhang Y, Meng Q, Yang J, Gong W, Liu Q, Cai L, Hao L, Wang B, Yang Y. Distribution of Zinc in Mycelial Cells and Antioxidant and Anti-Inflammatory Activities of Mycelia Zinc Polysaccharides from Thelephora ganbajun TG-01. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2308017. [PMID: 32655762 PMCID: PMC7317320 DOI: 10.1155/2020/2308017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 04/18/2020] [Accepted: 04/20/2020] [Indexed: 11/17/2022]
Abstract
This study demonstrates that Thelephora ganbajun had a strong ability to absorb zinc, and zinc can be compartmentally stored in the small vesicles and mainly accumulated in the form of zinc-enriched polysaccharides (zinc content was 25.0 ± 1.27 mg/g). Mycelia zinc polysaccharides (MZPS) and its fractions were isolated. The main fraction (MZPS-2) with the highest antioxidant activity in vitro was composed of mannose : galacturonic acid : glucose : galactose in a molar ratio of 61.19 : 1 : 39.67 : 48.67, with a weight-averaged molecular weight of 5.118 × 105 Da. MZPS-2 had both α-pyranose and β-pyranose configuration and had a triple helical conformation. By establishing zebrafish models, we found that MZPS-2 can significantly scavenge free radicals, reduce the generation of reactive oxygen species caused by inflammation, and inhibit the recruitment of neutrophils toward the injury site. Therefore, MZPS-2 exhibited antioxidant and anti-inflammatory effects and can be used as a zinc supplement with specific biological activities to alleviate zinc deficiency complications, such as chronic oxidative stress or inflammation.
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Affiliation(s)
- Lan Zheng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Yaohong Ma
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Yunjuan Zhang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
| | - Qingjun Meng
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Junhui Yang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Weili Gong
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Qingai Liu
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Lei Cai
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Lujiang Hao
- State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
| | - Binglian Wang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
| | - Yan Yang
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250103, China
- Shandong Provincial Key Laboratory of Biosensors, Jinan 250103, China
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14
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Arleth T, Olsen MH, Orre M, Rasmussen R, Bache S, Eskesen V, Frikke-Schmidt R, Møller K. Hypozincaemia is associated with severity of aneurysmal subarachnoid haemorrhage: a retrospective cohort study. Acta Neurochir (Wien) 2020; 162:1417-1424. [PMID: 32246202 DOI: 10.1007/s00701-020-04310-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Accepted: 03/23/2020] [Indexed: 02/06/2023]
Abstract
BACKGROUND Hypozincaemia may develop in critically ill patients, including those with acute brain injury in the early phase after hospital admission. The aim of this study was to investigate the prevalence of hypozincaemia after aneurysmal subarachnoid haemorrhage (aSAH) and its association with delayed cerebral ischemia and functional outcome. METHODS We retrospectively analysed a cohort of 384 patients with SAH admitted to the Neurointensive Care Unit at Rigshospitalet, Copenhagen, Denmark, in whom at least one measurement of plasma zinc concentration was done during the hospital stay. Hypozincaemia was defined as at least one measurement of plasma zinc below 10 μmol/L. Potential associations between hypozincaemia, demographic variables and functional outcome after aSAH were analysed in multivariable logistic regression models. RESULTS Hypozincaemia was observed in 67% (n = 257) of all patients and occurred within 7 days in more than 95% of all hypozincaemic patients. In a multivariable model, severe SAH (WFNS 3-5; OR 4.2, CI 2.21-8.32, p < 0.001) and Sequential Organ Failure Assessment (SOFA) score on the day of admission (OR 1.24, CI 1.11-1.40, p < 0.001) were independently associated with hypozincaemia. In another multivariable model, hypozincaemia was independently associated with an unfavourable outcome (defined as a modified Rankin Scale score from 3 to 6) (OR 1.97, CI 1.06-3.68, p = 0.032), as was age (OR 1.03, CI 1.01-1.05, p = 0.015), SOFA score on the day of admission (OR 1.14, CI 1.02-1.29, p = 0.02), a diagnosis of delayed cerebral ischaemia (OR 4.06, CI 2.29-7.31, p < 0.001) and a clinical state precluding assessment for delayed cerebral ischaemia (OR 15.13, CI 6.59-38.03, p < 0.001). CONCLUSION Hypozincaemia occurs frequently after aSAH, is associated with a higher disease severity and independently contributes to an unfavourable outcome.
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Affiliation(s)
- Tobias Arleth
- Department of Neuroanaesthesiology, The Neuroscience Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
| | - Markus Harboe Olsen
- Department of Neuroanaesthesiology, The Neuroscience Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Matias Orre
- Department of Neuroanaesthesiology, The Neuroscience Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Rune Rasmussen
- Department of Neurosurgery, Copenhagen University Hospital, Copenhagen, Denmark
| | - Søren Bache
- Department of Neuroanaesthesiology, The Neuroscience Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Vagn Eskesen
- Department of Neurosurgery, Copenhagen University Hospital, Copenhagen, Denmark
| | - Ruth Frikke-Schmidt
- Department of Clinical Biochemistry, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Kirsten Møller
- Department of Neuroanaesthesiology, The Neuroscience Center, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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15
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McDonald CM, Suchdev PS, Krebs NF, Hess SY, Wessells KR, Ismaily S, Rahman S, Wieringa FT, Williams AM, Brown KH, King JC. Adjusting plasma or serum zinc concentrations for inflammation: Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia (BRINDA) project. Am J Clin Nutr 2020; 111:927-937. [PMID: 32266402 PMCID: PMC7138668 DOI: 10.1093/ajcn/nqz304] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 11/14/2019] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The accurate estimation of zinc deficiency at the population level is important, as it guides the design, targeting, and evaluation of nutrition interventions. Plasma or serum zinc concentration (PZC) is recommended to estimate zinc nutritional status; however, concentrations may decrease in the presence of inflammation. OBJECTIVES We aimed to assess the relation between PZC and inflammation in preschool children (PSC; 6-59 mo) and nonpregnant women of reproductive age (WRA; 15-49 y), and to compare different inflammation adjustment approaches, if adjustment is warranted. METHODS Cross-sectional data from 13 nationally representative surveys (18,859 PSC, 22,695 WRA) from the Biomarkers Reflecting Inflammation and Nutritional Determinants of Anemia (BRINDA) project were analyzed. Correlation and decile analyses were conducted, and the following 3 adjustment methods were compared if a consistent negative association between PZC and C-reactive protein (CRP) or α-1-acid glycoprotein (AGP) was observed: 1) exclude individuals with CRP > 5 mg/L or AGP > 1 g/L; 2) apply arithmetic correction factors; and 3) use the BRINDA regression correction (RC) approach. RESULTS In 6 of 12 PSC surveys, the estimated prevalence of zinc deficiency increased with increasing CRP deciles, and to a lesser extent, with increasing AGP deciles. In WRA, the association of PZC with CRP and AGP was weak and inconsistent. In the 6 PSC surveys in which adjustment methods were compared, application of RC reduced the estimated prevalence of zinc deficiency by a median of 11 (range: 4-18) percentage points, compared with the unadjusted prevalence. CONCLUSIONS Relations between PZC and inflammatory markers were inconsistent, suggesting that correlation and decile analyses should be conducted before applying any inflammation adjustments. In populations of PSC that exhibit a significant negative association between PZC and CRP or AGP, application of the RC approach is supported. At this time, there is insufficient evidence to warrant inflammation adjustment in WRA.
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Affiliation(s)
- Christine M McDonald
- Children's Hospital Oakland Research Institute, Oakland, CA, USA
- Department of Pediatrics, School of Medicine, University of California, San Francisco, CA, USA
- Address correspondence to CMM (e-mail: )
| | - Parminder S Suchdev
- Rollins School of Public Health, Emory University, Atlanta, GA, USA
- Nutrition Branch, CDC, Atlanta, GA, USA
| | - Nancy F Krebs
- Section of Nutrition, Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Sonja Y Hess
- Department of Nutrition, University of California, Davis, CA, USA
| | - K Ryan Wessells
- Department of Nutrition, University of California, Davis, CA, USA
| | - Sanober Ismaily
- Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Sabuktagin Rahman
- International Centre for Diarrhoeal Disease Research, Bangladesh (icddr,b), Dhaka, Bangladesh
- School of Medicine, Griffith University, Gold Coast, Queensland, Australia
| | | | - Anne M Williams
- Rollins School of Public Health, Emory University, Atlanta, GA, USA
- Nutrition Branch, CDC, Atlanta, GA, USA
- McKing Consulting Corporation, Atlanta, GA, USA
| | - Kenneth H Brown
- Department of Nutrition, University of California, Davis, CA, USA
| | - Janet C King
- Children's Hospital Oakland Research Institute, Oakland, CA, USA
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16
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Sun Y, Li C, Zhu M, Zhang S, Cao Y, Yang Q, Zhao P, Huang G, Xu A. Enhanced migration and adhesion of peripheral blood neutrophils from SAPHO patients revealed by RNA-Seq. Orphanet J Rare Dis 2019; 14:192. [PMID: 31395074 PMCID: PMC6688242 DOI: 10.1186/s13023-019-1169-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Accepted: 07/26/2019] [Indexed: 02/08/2023] Open
Abstract
Background SAPHO syndrome is a rare disease characterized by inflammatory lesions on skin and bones. Diversified manifestation and inadequate understanding of etiology has limited its diagnosis and treatment. The co-occurrence of other immune-mediated diseases strongly suggests an involvement of autoimmunity in SAPHO syndrome. However, the role of the largest population of circulating immune cells, neutrophils, is still not well explored. In this study, we performed RNA sequencing to profile the mRNA expression of neutrophils purified from peripheral blood of SAPHO patients to identify key genes associated with SAPHO syndrome, trying to find new functional molecules or biomarkers for this rare disease. Results A total of 442 differentially expressed genes were identified (p < 0.05, fold change > 2), in which 294 genes were upregulated and 148 genes were downregulated. Five differentially expressed genes of interest were verified by quantitative Real-Time Polymerase Chain Reaction (qRT-PCR), among which S100A12 was upregulated and positively related to high-sensitivity C-reactive protein (hsCRP), while the downregulated gene MYADM was positively related to osteocalcin. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that differentially expressed genes were enriched in “systemic lupus erythematosus” and “ECM-receptor interaction”. Gene ontology (GO) enrichment showed that differentially expressed genes may participate in biological processes such as “cell migration” and “cell adhesion”. Conclusions In conclusion, this study provides a first insight into transcriptome characteristics of SAPHO syndrome, indicating an over-active neutrophil recruitment in patients and possibly suggesting molecular candidates for further study on diagnosis and pathology of this disease. Electronic supplementary material The online version of this article (10.1186/s13023-019-1169-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yuxiu Sun
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Chen Li
- Department of Traditional Chinese Medicine, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Mengmeng Zhu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Shen Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Yihan Cao
- Department of Radiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Qiao Yang
- Department of Nephrology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Pengfei Zhao
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Guangrui Huang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China.
| | - Anlong Xu
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China. .,State Key Laboratory of Biocontrol, Department of Biochemistry, School of Life Sciences, Sun Yat-Sen (Zhongshan) University, Guangzhou, Guangdong, China.
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17
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Thomas P. Membrane Androgen Receptors Unrelated to Nuclear Steroid Receptors. Endocrinology 2019; 160:772-781. [PMID: 30753403 DOI: 10.1210/en.2018-00987] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 02/05/2019] [Indexed: 01/08/2023]
Abstract
Rapid (nongenomic) membrane-initiated androgen actions have been described in nuclear androgen receptor-null cells. Four distinct proteins have been proposed as membrane androgen receptors (mARs) or sensors. Transient receptor potential melastatin 8 (TRPM8) is a calcium channel that acts as a pain receptor and mediates androgen- and menthol-induced increases in calcium levels and survival of prostate cancer cells. Testosterone (T) directly interacts with TRPM8, but extensive androgen receptor binding studies to confirm its role as an mAR are lacking. Oxoeicosanoid receptor 1 (OXER1) is highly expressed in prostate cancer tissues, and its major ligand, 5-oxoeicosatretraenoic acid (5-oxo-ETE), is a potent inducer of prostate cancer cell proliferation and survival. T competes for 5-oxo-ETE binding to OXER1 and antagonizes 5-oxo-ETE-mediated inhibition of cAMP production. However, OXER1 does not meet a traditional criterion for its designation as an mAR because T treatment alone does not alter cAMP signaling. GPRC6A is a class C G protein-coupled receptor activated by l-α-amino acids and is modulated by calcium. Although there has been controversy over the proposed role of T as a GPRC6A ligand, androgen induction of GPRC6A signaling has recently been confirmed by several researchers. ZIP9 belongs to the zinc transporter ZIP (SLC39A) family and displays specific T binding characteristic of an mAR. ZIP9 mediates androgen-dependent intracellular signaling and apoptosis of breast and prostate cancer cells through activation of G proteins. Androgen-signaling functions of ZIP9 have been confirmed in other cells, but the overall importance of ZIP9 in androgen physiology remains unclear. Here, the current status of these four proteins as mARs or sensors is critically reviewed.
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Affiliation(s)
- Peter Thomas
- University of Texas at Austin Marine Science Institute, Port Aransas, Texas
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18
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Abstract
Sepsis, defined as a “life-threatening organ dysfunction caused by a dysregulated host-response to infection” is a major health issue worldwide and still lacks a fully elucidated pathobiology and uniform diagnostic tests. The trace element zinc is known to be crucial to ensure an appropriate immune response. During sepsis a redistribution of zinc from serum into the liver has been observed and several studies imply a correlation between zinc and sepsis outcome. Therefore the alterations of zinc concentrations in different tissues might serve as one part of the host’s defense mechanism against pathogens during sepsis by diverse mechanisms. It has been suggested that zinc is involved in nutritional immunity, acts as a hepatoprotective agent, or a differentiation signal for innate immune cells, or supports the synthesis of acute phase proteins. Further knowledge about these events could help in the evaluation of how zinc could be optimally applied to improve treatment of septic patients. Moreover, the changes in zinc homeostasis are substantial and correlate with the severity of the disease, suggesting that zinc might also be useful as a diagnostic marker for evaluating the severity and predicting the outcome of sepsis.
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Affiliation(s)
- Wiebke Alker
- Department of Food Chemistry and Toxicology, Berlin Institute of Technology, 13355 Berlin, Germany.
- TraceAge-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly, Potsdam-Berlin-Jena, Germany.
| | - Hajo Haase
- Department of Food Chemistry and Toxicology, Berlin Institute of Technology, 13355 Berlin, Germany.
- TraceAge-DFG Research Unit on Interactions of Essential Trace Elements in Healthy and Diseased Elderly, Potsdam-Berlin-Jena, Germany.
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