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Krepkova LV, Babenko AN, Lemyaseva SV, Saybel OL, Sherwin CM, Enioutina EY. Modulation of Hepatic Functions by Chicory ( Cichorium intybus L.) Extract: Preclinical Study in Rats. Pharmaceuticals (Basel) 2023; 16:1471. [PMID: 37895942 PMCID: PMC10609820 DOI: 10.3390/ph16101471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2023] [Revised: 09/26/2023] [Accepted: 10/03/2023] [Indexed: 10/29/2023] Open
Abstract
The liver is important in detoxifying organisms from xenobiotics, supporting immune functions, and metabolizing lipids and glucose. In addition, a growing number of drug-induced liver injuries and diseases associated with liver dysfunction make the development of phytodrugs targeting multiple liver functions particularly crucial. Therefore, we investigated the effects of a novel chicory extract prepared from aerial parts of the wild Cichorium intybus L. plant (CE) on liver enzymes and on lipid and glucose metabolism in rats with acute liver injury or hyperlipidemia. A single subcutaneous injection of mercury chloride induced an acute liver injury. Hyperlipidemia was induced by a single intraperitoneal injection of Tween-80 or by feeding rats with cholesterol and mercazolil for 28 days. Under varying regimens, the experimental rats received 100 mg/kg b.w. or 500 mg/kg b.w. of CE. CE treatment ameliorated acute liver injury by reducing liver enzyme activity, bilirubin, glucose, and lipid levels. Treatment of hyperlipidemic rats with CE effectively reduced serum lipid and glucose levels. The data obtained in this study suggest that chicory-based phytodrugs may be used to effectively treat acute liver injury and for the prophylaxis or treatment of diseases such as hyperlipidemia, type 2 diabetes, and metabolic syndrome. Clinical trials are needed to prove the effectiveness of chicory extract in human patients.
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Affiliation(s)
- Lubov V. Krepkova
- All-Russian Institute of Medicinal and Aromatic Plants (VILAR), Moscow 113628, Russia
| | - Alexandra N. Babenko
- All-Russian Institute of Medicinal and Aromatic Plants (VILAR), Moscow 113628, Russia
| | - Svetlana V. Lemyaseva
- All-Russian Institute of Medicinal and Aromatic Plants (VILAR), Moscow 113628, Russia
| | - Olga L. Saybel
- All-Russian Institute of Medicinal and Aromatic Plants (VILAR), Moscow 113628, Russia
| | - Catherine M. Sherwin
- Boonshoft School of Medicine, Wright State University, Dayton Children’s Hospital, Dayton, OH 45435, USA;
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT 84108, USA
| | - Elena Y. Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT 84108, USA
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Han X, Vollmer D, Enioutina EY. Immunomodulatory Effects of Modified Bovine Colostrum, Whey, and Their Combination with Other Natural Products: Effects on Human Peripheral Blood Mononuclear Cells. Curr Ther Res Clin Exp 2023; 99:100720. [PMID: 37885900 PMCID: PMC10598499 DOI: 10.1016/j.curtheres.2023.100720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2023] [Accepted: 09/29/2023] [Indexed: 10/28/2023]
Abstract
Background Many natural products have immunomodulatory properties. However, the mechanism of immunomodulatory activities are poorly understood. Objectives This study evaluated the influence of bovine colostrum products, a whey product, or their combinations with other natural products on human peripheral blood mononuclear cells' (PBMC) ability to produce cytokines upon activation. Methods PBMCs were pretreated with ultrafiltered colostrum, nano-filtered bovine colostrum, egg yolk extract, a botanical blend, colostrum + egg yolk extract, colostrum + egg yolk + botanical blend, and fermented whey and then stimulated with lipopolysaccharide or phytohemagglutinin. Cytokine production was measured by the Luminex assay. Results All study products demonstrated immunomodulatory properties by regulating cytokines production by activated PBMCs. Ultrafiltered colostrum alone displayed the highest immune stimulatory activity. It stimulated proinflammatory cytokine production by lipopolysaccharide-activated PBMCs and suppressed cytokine production by phytohemagglutinin-activated cells. Other study products mainly suppressed cytokine release by both cell types. The immunomodulatory properties depended upon the dose of the products used in the study. Conclusions All tested products modulated innate and adaptive immune cell activities. Most of the products demonstrated anti-inflammatory properties, except ultrafiltered colostrum, which stimulated the lipopolysaccharide-activated PBMC production of inflammatory cytokines. These products can be potentially used to support overall immune health.
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Affiliation(s)
| | | | - Elena Y. Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, Utah
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Jain M, Stitt G, Son L, Enioutina EY. Probiotics and Their Bioproducts: A Promising Approach for Targeting Methicillin-Resistant Staphylococcus aureus and Vancomycin-Resistant Enterococcus. Microorganisms 2023; 11:2393. [PMID: 37894051 PMCID: PMC10608974 DOI: 10.3390/microorganisms11102393] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 09/16/2023] [Accepted: 09/22/2023] [Indexed: 10/29/2023] Open
Abstract
Antibiotic resistance is a serious global health problem that poses a threat to the successful treatment of various bacterial infections, especially those caused by methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant Enterococcus (VRE). Conventional treatment of MRSA and VRE infections is challenging and often requires alternative or combination therapies that may have limited efficacy, higher costs, and/or more adverse effects. Therefore, there is an urgent need to find new strategies to combat antibiotic-resistant bacteria. Probiotics and antimicrobial peptides (AMPs) are two promising approaches that have shown potential benefits in various diseases. Probiotics are live microorganisms that confer health benefits to the host when administered in adequate amounts. AMPs, usually produced with probiotic bacteria, are short amino acid sequences that have broad-spectrum activity against bacteria, fungi, viruses, and parasites. Both probiotics and AMPs can modulate the host immune system, inhibit the growth and adhesion of pathogens, disrupt biofilms, and enhance intestinal barrier function. In this paper, we review the current knowledge on the role of probiotics and AMPs in targeting multi-drug-resistant bacteria, with a focus on MRSA and VRE. In addition, we discuss future directions for the clinical use of probiotics.
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Affiliation(s)
| | | | | | - Elena Y. Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, Spencer Fox Eccles School of Medicine, University of Utah, Salt Lake City, UT 84108, USA; (M.J.); (G.S.); (L.S.)
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Constance JE, McFarland MM, Casucci T, Deininger MW, Enioutina EY, Job K, Lemons RS, Lim CS, Ward RM, Yellepeddi V, Watt KM. Mapping the Evidence for Opioid-Mediated Changes in Malignancy and Chemotherapeutic Efficacy: Protocol for a Scoping Review. JMIR Res Protoc 2023; 12:e38167. [PMID: 37213193 PMCID: PMC10242459 DOI: 10.2196/38167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 03/19/2023] [Accepted: 04/05/2023] [Indexed: 04/08/2023] Open
Abstract
BACKGROUND Numerous reports contend opioids can augment or inhibit malignancy. At present, there is no consensus on the risk or benefit posed by opioids on malignancy or chemotherapeutic activity. Distinguishing the consequences of opioid use from pain and its management is challenging. Additionally, opioid concentration data is often lacking in clinical studies. A scoping review approach inclusive of preclinical and clinical data will improve our understanding of the risk-benefit relationship concerning commonly prescribed opioids and cancer and cancer treatment. OBJECTIVE The aim of the study is to map diverse studies spanning from preclinical to clinical regarding opioids with malignancy and its treatment. METHODS This scoping review will use the Arksey six stages framework to (1) identify the research question; (2) identify relevant studies; (3) select studies meeting criteria; (4) extract and chart data; (5) collate, summarize, and report results; and (6) conduct expert consultation. An initial pilot study was undertaken to (1) parameterize the extent and scale of existing data for an evidence review, (2) identify key factors to be extracted in systematic charting efforts, and (3) assess opioid concentration as a variable for its relevance to the central hypothesis. Six databases will be searched with no filters: MEDLINE, Embase, CINAHL Complete, Cochrane Library, Biological Sciences Collection, and International Pharmaceutical Abstracts. Trial registries will include ClinicalTrials.gov, Cochrane CENTRAL, International Standard Randomised Controlled Trial Number Registry, European Union Clinical Trials Register, and World Health Organization International Clinical Trials Registry. Eligibility criteria will include preclinical and clinical study data on opioids effects on tumor growth or survival, or alteration on the antineoplastic activity of chemotherapeutics. We will chart data on (1) opioid concentration from human subjects with cancer, yielding a "physiologic range" to better interpret available preclinical data; (2) patterns of opioid exposure with disease and treatment-related patient outcomes; and (3) the influence of opioids on cancer cell survival, as well as opioid-related changes to cancer cell susceptibility for chemotherapeutics. RESULTS This scoping review will present results in narrative forms as well as with the use of tables and diagrams. Initiated in February 2021 at the University of Utah, this protocol is anticipated to generate a scoping review by August 2023. The results of the scoping review will be disseminated through scientific conference proceedings and presentations, stakeholder meetings, and by publication in a peer-reviewed journal. CONCLUSIONS The findings of this scoping review will provide a comprehensive description of the consequences of prescription opioids on malignancy and its treatment. By incorporating preclinical and clinical data, this scoping review will invite novel comparisons across study types that could inform new basic, translational, and clinical studies regarding risks and benefits of opioid use among patients with cancer. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) PRR1-10.2196/38167.
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Affiliation(s)
- Jonathan E Constance
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Mary M McFarland
- Spencer S. Eccles Health Science Library, University of Utah, Salt Lake City, UT, United States
| | - Tallie Casucci
- J Willard Marriott Library, University of Utah, Salt Lake City, UT, United States
| | - Michael W Deininger
- Versiti Blood Research Institute, Milwaukee, WI, United States
- Division of Hematology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Kathleen Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Richard S Lemons
- Division of Hematology and Oncology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Carol S Lim
- Department of Molecular Pharmaceutics, College of Pharmacy, University of Utah, Salt Lake City, UT, United States
| | - Robert M Ward
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Venkata Yellepeddi
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
| | - Kevin M Watt
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, United States
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Hudson RE, Metz TD, Ward RM, McKnite AM, Enioutina EY, Sherwin CM, Watt KM, Job KM. Drug exposure during pregnancy: Current understanding and approaches to measure maternal-fetal drug exposure. Front Pharmacol 2023; 14:1111601. [PMID: 37033628 PMCID: PMC10076747 DOI: 10.3389/fphar.2023.1111601] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 03/13/2023] [Indexed: 04/11/2023] Open
Abstract
Prescription drug use is prevalent during pregnancy, yet there is limited knowledge about maternal-fetal safety and efficacy of this drug use because pregnant individuals have historically been excluded from clinical trials. Underrepresentation has resulted in a lack of data available to estimate or predict fetal drug exposure. Approaches to study fetal drug pharmacology are limited and must be evaluated for feasibility and accuracy. Anatomic and physiological changes throughout pregnancy fluctuate based on gestational age and can affect drug pharmacokinetics (PK) for both mother and fetus. Drug concentrations have been studied throughout different stages of gestation and at or following delivery in tissue and fluid biospecimens. Sampling amniotic fluid, umbilical cord blood, placental tissue, meconium, umbilical cord tissue, and neonatal hair present surrogate options to quantify and characterize fetal drug exposure. These sampling methods can be applied to all therapeutics including small molecule drugs, large molecule drugs, conjugated nanoparticles, and chemical exposures. Alternative approaches to determine PK have been explored, including physiologically based PK modeling, in vitro methods, and traditional animal models. These alternative approaches along with convenience sampling of tissue or fluid biospecimens can address challenges in studying maternal-fetal pharmacology. In this narrative review, we 1) present an overview of the current understanding of maternal-fetal drug exposure; 2) discuss biospecimen-guided sampling design and methods for measuring fetal drug concentrations throughout gestation; and 3) propose methods for advancing pharmacology research in the maternal-fetal population.
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Affiliation(s)
- Rachel E. Hudson
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, The University of Utah, Salt Lake City, UT, United States
| | - Torri D. Metz
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, School of Medicine, The University of Utah, Salt Lake City, UT, United States
| | - Robert M. Ward
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, The University of Utah, Salt Lake City, UT, United States
| | - Autumn M. McKnite
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Utah, Salt Lake City, UT, United States
| | - Elena Y. Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, The University of Utah, Salt Lake City, UT, United States
| | - Catherine M. Sherwin
- Department of Pediatrics, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
| | - Kevin M. Watt
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, The University of Utah, Salt Lake City, UT, United States
| | - Kathleen M. Job
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, The University of Utah, Salt Lake City, UT, United States
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Sayre CL, Yellepeddi VK, Job KM, Krepkova LV, Sherwin CMT, Enioutina EY. Current use of complementary and conventional medicine for treatment of pediatric patients with gastrointestinal disorders. Front Pharmacol 2023; 14:1051442. [PMID: 36778015 PMCID: PMC9911676 DOI: 10.3389/fphar.2023.1051442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/16/2023] [Indexed: 01/28/2023] Open
Abstract
Infants, children, and adolescents are at risk of experiencing a multitude of gastrointestinal disorders (GID). These disorders can adversely affect the quality of life or be life-threatening. Various interventions that span the conventional and complementary therapeutic categories have been developed. Nowadays, parents increasingly seek complementary options for their children to use concurrently with conventional therapies. Due to the high prevalence and morbidity of diarrhea, constipation, and irritable bowel syndrome (IBS) in children, in this review, we decided to focus on the current state of the evidence for conventional and complementary therapies used for the treatment of these diseases in children. Diarrhea treatment focuses on the identification of the cause and fluid management. Oral rehydration with supplementation of deficient micronutrients, especially zinc, is well established and recommended. Some probiotic strains have shown promise in reducing the duration of diarrhea. For the management of constipation, available clinical trials are insufficient for conclusive recommendations of dietary modifications, including increased use of fruit juice, fiber, and fluid. However, the role of laxatives as conventional treatment is becoming more established. Polyethylene glycol is the most studied, with lactulose, milk of magnesia, mineral oil, bisacodyl, and senna presenting as viable alternatives. Conventional treatments of the abdominal pain associated with IBS are poorly studied in children. Available studies investigating the effectiveness of antidepressants on abdominal pain in children with IBS were inconclusive. At the same time, probiotics and peppermint oil have a fair record of benefits and safety. The overall body of evidence indicates that a careful balance of conventional and complementary treatment strategies may be required to manage gastrointestinal conditions in children.
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Affiliation(s)
- Casey L. Sayre
- Division of Clinical Pharmacology, Pediatrics, School of Medicine, Salt Lake City, UT, United States,College of Pharmacy, Roseman University of Health Sciences, South Jordan, UT, United States
| | | | - Kathleen M. Job
- Division of Clinical Pharmacology, Pediatrics, School of Medicine, Salt Lake City, UT, United States
| | - Lubov V. Krepkova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Catherine M. T. Sherwin
- Department of Pediatrics, Boonshoft School of Medicine, Wright State University, Dayton, OH, United States
| | - Elena Y. Enioutina
- Division of Clinical Pharmacology, Pediatrics, School of Medicine, Salt Lake City, UT, United States,*Correspondence: Elena Y. Enioutina,
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Hudson RE, Job KM, Sayre CL, Krepkova LV, Sherwin CM, Enioutina EY. Examination of Complementary Medicine for Treating Urinary Tract Infections Among Pregnant Women and Children. Front Pharmacol 2022; 13:883216. [PMID: 35571128 PMCID: PMC9094615 DOI: 10.3389/fphar.2022.883216] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Accepted: 04/12/2022] [Indexed: 01/27/2023] Open
Abstract
Urinary tract infections (UTIs) are a significant clinical problem that pregnant women and children commonly experience. Escherichia coli is the primary causative organism, along with several other gram-negative and gram-positive bacteria. Antimicrobial drugs are commonly prescribed to treat UTIs in these patients. Conventional treatment can range from using broad-spectrum antimicrobial drugs for empirical or prophylactic therapy or patient-tailored therapy based on urinary cultures and sensitivity to prospective antibiotics. The ongoing emergence of multi-drug resistant pathogens has raised concerns related to commonly prescribed antimicrobial drugs such as those used routinely to treat UTIs. Consequently, several natural medicines have been explored as potential complementary therapies to improve health outcomes in patients with UTIs. This review discusses the effectiveness of commonly used natural products such as cranberry juice/extracts, ascorbic acid, hyaluronic acid, probiotics, and multi-component formulations intended to treat and prevent UTIs. The combination of natural products with prescribed antimicrobial treatments and use of formulations that contained high amounts of cranberry extracts appear to be most effective in preventing recurrent UTIs (RUTIs). The incorporation of natural products like cranberry, hyaluronic acid, ascorbic acid, probiotics, Canephron® N, and Cystenium II to conventional treatments of acute UTIs or as a prophylactic regimen for treatment RUTIs can benefit both pregnant women and children. Limited information is available on the safety of natural products in these patients' populations. However, based on limited historical information, these remedies appear to be safe and well-tolerated by patients.
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Affiliation(s)
- Rachel E. Hudson
- Department of Pediatrics, Post-Doctoral Fellow, Division of Clinical Pharmacology, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Kathleen M. Job
- Department of Pediatrics, Research Assistant Professor, Division of Clinical Pharmacology, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Casey L. Sayre
- Department of Pediatrics, Research Assistant Professor, Division of Clinical Pharmacology, University of Utah School of Medicine, Salt Lake City, UT, United States
- College of Pharmacy, Roseman University of Health Sciences, South Jordan, UT, United States
| | - Lubov V. Krepkova
- Head of Toxicology Department, Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Catherine M. Sherwin
- Department of Pediatrics, Vice-Chair for Research, Professor, Wright State University Boonshoft School of Medicine/Dayton Children’s Hospital, Dayton, OH, United States
| | - Elena Y. Enioutina
- Department of Pediatrics, Research Assistant Professor, Division of Clinical Pharmacology, University of Utah School of Medicine, Salt Lake City, UT, United States
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Krepkova LV, Babenko AN, Saybel' OL, Lupanova IA, Kuzina OS, Job KM, Sherwin CM, Enioutina EY. Valuable Hepatoprotective Plants - How Can We Optimize Waste Free Uses of Such Highly Versatile Resources? Front Pharmacol 2021; 12:738504. [PMID: 34867345 PMCID: PMC8637540 DOI: 10.3389/fphar.2021.738504] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 10/27/2021] [Indexed: 11/13/2022] Open
Abstract
Humans used plants for thousand of years as food, drugs, or fuel to keep homes warm. People commonly used fruits and roots, and other parts of the plant were often wasted. This review aims to discuss the potential of rational stem-to-stern use of three highly versatile and valuable plants with hepatoprotective properties. Milk thistle (Silybum marianum L. Gaertn.), artichoke (Cynara cardunculus), and chicory (Cichorium intybus L.) have well-characterized hepatoprotective properties. These plants have been chosen since liver diseases are significant diseases of concern worldwide, and all parts of plants can be potentially utilized. Artichoke and chicory are commonly used as food or dietary supplements and less often as phytodrugs. Various dietary supplements and phytodrugs prepared from milk thistle (MT) fruits/seeds are well-known to consumers as remedies supporting liver functions. However, using these plants as functional food, farm animal feed, is not well-described in the literature. We also discuss bioactive constituents present in various parts of these plants, their pharmacological properties. Distinct parts of MT, artichoke, and chicory can be used to prepare remedies and food for humans and animals. Unused plant parts are potentially wasted. To achieve waste-free use of these and many other plants, the scientific community needs to analyze the complex use of plants and propose strategies for waste-free technologies. The government must stimulate companies to utilize by-products. Another problem associated with plant use as a food or source of phytodrug is the overharvesting of wild plants. Consequently, there is a need to use more active cultivation techniques for plants.
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Affiliation(s)
- Lubov V Krepkova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Aleksandra N Babenko
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Olga L Saybel'
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Irina A Lupanova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Olga S Kuzina
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Kathleen M Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Catherine M Sherwin
- Department of Pediatrics, Boonshoft School of Medicine, Dayton Children's Hospital, Wright State University, Dayton, OH, United States
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Department of Pharmaceutics & Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, UT, United States
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Job KM, Roberts JK, Enioutina EY, IIIamola SM, Kumar SS, Rashid J, Ward RM, Fukuda T, Sherbotie J, Sherwin CM. Treatment optimization of maintenance immunosuppressive agents in pediatric renal transplant recipients. Expert Opin Drug Metab Toxicol 2021; 17:747-765. [PMID: 34121566 PMCID: PMC10726690 DOI: 10.1080/17425255.2021.1943356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 06/11/2021] [Indexed: 10/21/2022]
Abstract
Introduction: Graft survival in pediatric kidney transplant patients has increased significantly within the last three decades, correlating with the discovery and utilization of new immunosuppressants as well as improvements in patient care. Despite these developments in graft survival for patients, there is still improvement needed, particularly in long-term care in pediatric patients receiving grafts from deceased donor patients. Maintenance immunosuppressive therapies have narrow therapeutic indices and are associated with high inter-individual and intra-individual variability.Areas covered: In this review, we examine the impact of pharmacokinetic variability on renal transplantation and its association with age, genetic polymorphisms, drug-drug interactions, drug-disease interactions, renal insufficiency, route of administration, and branded versus generic drug formulation. Pharmacodynamics are outlined in terms of the mechanism of action for each immunosuppressant, potential adverse effects, and the utility of pharmacodynamic biomarkers.Expert opinion: Acquiring abetter quantitative understanding of immunosuppressant pharmacokinetics and pharmacodynamic components should help clinicians implement treatment regimens to maintain the balance between therapeutic efficacy and drug-related toxicity.
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Affiliation(s)
- Kathleen M Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Jessica K Roberts
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Sílvia M IIIamola
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
| | - Shaun S Kumar
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Jahidur Rashid
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
| | - Robert M Ward
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah, Salt Lake City, UT, USA
- Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Tsuyoshi Fukuda
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Joseph Sherbotie
- Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Catherine M Sherwin
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, USA
- Department of Pediatrics, Boonshoft School of Medicine, Dayton Children’s Hospital, Wright State University, Dayton, OH, USA
- Department of Pharmacotherapy, College of Pharmacy, University of Utah, Salt Lake City, UT, USA
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Krepkova LV, Bortnikova VV, Babenko AN, Mizina PG, Mkhitarov VA, Job KM, Sherwin CM, Enioutina EY. Effects of a new thyrotropic drug isolated from Potentilla alba on the male reproductive system of rats and offspring development. BMC Complement Med Ther 2021; 21:31. [PMID: 33441114 PMCID: PMC7807504 DOI: 10.1186/s12906-020-03184-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Accepted: 12/09/2020] [Indexed: 01/07/2023] Open
Abstract
Background The dysfunction of the thyroid gland is a common medical condition. Nowadays, patients frequently use medicinal herbs as complementary or alternative options to conventional drug treatments. These patients may benefit from treatment of thyroid dysfunctions with Potentilla alba L. preparations. While it has been reported that Potentilla alba preparations have low toxicity, nothing is known about their ability to affect reproductive functions in patients of childbearing age. Methods Male Wistar rats were orally treated with a thyrotrophic botanical drug, standardized Potentilla alba Dry Extract (PADE), at doses 8 and 40 times higher than the median therapeutic dose recommended for the clinical trials, for 60 consecutive days. Male Wistar rats receiving water (H2O) were used as controls. After completing treatment, half of the PADE-treated and control males were used to determine PADE gonadotoxicity, and the remaining half of PADE-treated and control males were mated with intact females. Two female rats were housed with one male for two estrus cycles. PADE effects on fertility and fetal/offspring development were evaluated. Results Herein, we report that oral treatment of male Wistar rats with PADE before mating with intact females instigated marked effects on male reproductive organs. Treatment significantly decreased the motility of the sperm and increased the number of pathological forms of spermatozoa. Additionally, a dose-dependent effect on Leydig cells was observed. However, these PADE effects did not significantly affect male fertility nor fetal and offspring development when PADE-treated males were mated with intact females. Conclusions PADE treatment of male rates negatively affected sperm and testicular Leydig cell morphology. However, these changes did not affect male fertility and offspring development. It is currently not known whether PADE treatment may affect human male fertility and offspring development. Therefore, these results from an animal study need to be confirmed in humans. Results from this animal study can be used to model the exposure-response relationship and adverse outcomes in humans.
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Affiliation(s)
- Lubov V Krepkova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Grina Street 7, Moscow, 117216, Russia
| | - Valentina V Bortnikova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Grina Street 7, Moscow, 117216, Russia
| | - Aleksandra N Babenko
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Grina Street 7, Moscow, 117216, Russia
| | - Praskovya G Mizina
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Grina Street 7, Moscow, 117216, Russia
| | - Vladimir A Mkhitarov
- FSBI "Research Institute of Human Morphology", 3 Tsyurupy St., Moscow, 117418, Russia
| | - Kathleen M Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, 295 Chipeta Way, Salt Lake City, UT, 84108, USA
| | - Catherine M Sherwin
- Department of Pediatrics, Wright State University, Boonshoft School of Medicine, Dayton Children's Hospital, Children's Plaza, Dayton, OH, 45404, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, 295 Chipeta Way, Salt Lake City, UT, 84108, USA. .,Department of Pharmaceutics & Pharmaceutical Chemistry, College of Pharmacy, University of Utah, 30 South 2000 East, Salt Lake City, UT, 84112, USA.
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Enioutina EY, Job KM, Sherwin CM. Why we need to pay attention to toxicity associated with herbal medicines. Br J Clin Pharmacol 2020; 86:1793-1794. [PMID: 32406066 PMCID: PMC7444788 DOI: 10.1111/bcp.14340] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 04/22/2020] [Indexed: 12/17/2022] Open
Affiliation(s)
- Elena Y. Enioutina
- Division of Clinical Pharmacology, Department of PediatricsUniversity of Utah School of MedicineSalt Lake CityUtahUSA
- Department of PathologyUniversity of Utah School of MedicineSalt Lake CityUtahUSA
| | - Kathleen M. Job
- Division of Clinical Pharmacology, Department of PediatricsUniversity of Utah School of MedicineSalt Lake CityUtahUSA
| | - Catherine M.T. Sherwin
- Department of PediatricsWright State University Boonshoft School of Medicine, Dayton Children's HospitalDaytonOhioUSA
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12
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Enioutina EY, Job KM, Krepkova LV, Reed MD, Sherwin CM. How can we improve the safe use of herbal medicine and other natural products? A clinical pharmacologist mission. Expert Rev Clin Pharmacol 2020; 13:935-944. [PMID: 32730191 DOI: 10.1080/17512433.2020.1803739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Three major classes of natural products (NPs) for medicinal purposes or improving wellbeing are generally available in the US: conventional drugs of herbal origin, botanical drugs, and dietary supplements (DSs). Consumer consumption of DSs is growing annually. The U.S. FDA regulates conventional and botanical drugs for safety and efficacy; however, DSs are minimally regulated. AREAS COVERED This article will: i) highlight the importance of NP as a significant source of prescription drugs; ii) discuss differences in the regulation of conventional drugs of NP product, botanical drugs, and DSs; iii) discuss the safety and efficacy of DSs and iv) make recommendations for improvement of safety for minimally regulated NPs. EXPERT OPINION Toxicities associated with the use of NPs, including vitamins and DSs, are mainly due to excessive use and interactions with conventional drug(s) and may represent challenges for clinicians. Conventional and botanical-based prescription drugs are rarely associated with unknown toxicities. However, DSs are minimally regulated and can produce severe adverse effects. We believe that clinical pharmacologists can have a role in developing criteria for DS safety analysis. There is also the potential for a standardized NP stewardship program(s) and the development of NP policies and practices nationally and globally.
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Affiliation(s)
- Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine , Salt Lake City, UT, USA
| | - Kathleen M Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine , Salt Lake City, UT, USA
| | - Lubov V Krepkova
- Toxicology Department, Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR) , Moscow, Russia
| | - Michael D Reed
- School of Medicine, Case Western Reserve University , Cleveland, OH, USA
| | - Catherine M Sherwin
- Department of Pediatrics, Wright State University Boonshoft School of Medicine/Dayton Children's Hospital , Dayton, OH, USA
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13
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Biltaji E, Enioutina EY, Yellepeddi V, Rower JE, Sherwin CMT, Ward RM, Lemons RS, Constance JE. Supportive care medications coinciding with chemotherapy among children with hematologic malignancy. Leuk Lymphoma 2020; 61:1920-1931. [PMID: 32264729 PMCID: PMC7725403 DOI: 10.1080/10428194.2020.1749604] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Pharmacokinetic (PK) conflicts can arise between supportive care medications (SCM) and chemotherapy in children with hematologic malignancy (HM). In this retrospective study, medical records for children (28 days-18 years) diagnosed with HM and receiving an SCM antimicrobial were collected from a hospital network between 1 May 2000 and 31 December 2014. PK drug-gene associations were obtained from a curated pharmacogenomics database. Among 730 patients (median age of 7.5 (IQR 3.7-13.9) years), primarily diagnosed with lymphoid leukemia (52%), lymphoma (28%), or acute myeloid leukemia (16%), chemotherapy was administered in 2846 hospitalizations. SCM accounted for 90.5% (n = 448) of distinct drugs with 93% (n = 679) of children, receiving ≥5 different SCM/hospitalization. Same-day SCM/chemotherapeutic PK gene overlap occurred in 48.3% of hospitalizations and was associated with age (p = 0.026), number of SCM, HM subtype, surgery, and hematopoietic stem cell transplant (p < 0.0001). A high and variable SCM burden among children with HM receiving chemotherapy poses a risk for unanticipated PK conflicts.
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Affiliation(s)
- Eman Biltaji
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Venkata Yellepeddi
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Joseph E Rower
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT, USA
| | - Catherine M T Sherwin
- Department of Pediatrics, Wright State University Boonshoft School of Medicine, Dayton Children's Hospital, Dayton, OH, USA
| | - Robert M Ward
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Richard S Lemons
- Division of Hematology and Oncology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
| | - Jonathan E Constance
- Division of Clinical Pharmacology, Department of Pediatrics, School of Medicine, University of Utah, Salt Lake City, UT, USA
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14
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Illamola SM, Amaeze OU, Krepkova LV, Birnbaum AK, Karanam A, Job KM, Bortnikova VV, Sherwin CMT, Enioutina EY. Use of Herbal Medicine by Pregnant Women: What Physicians Need to Know. Front Pharmacol 2020; 10:1483. [PMID: 31998122 PMCID: PMC6962104 DOI: 10.3389/fphar.2019.01483] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 11/15/2019] [Indexed: 12/13/2022] Open
Abstract
About 80% of the consumers worldwide use herbal medicine (HMs) or other natural products. The percentage may vary significantly (7%-55%) among pregnant women, depending upon social status, ethnicity, and cultural traditions. This manuscript discusses the most common HMs used by pregnant women, and the potential interactions of HMs with conventional drugs in some medical conditions that occur during pregnancy (e.g., hypertension, asthma, epilepsy). It also includes an examination of the characteristics of pregnant HM consumers, the primary conditions for which HMs are taken, and a discussion related to the potential toxicity of HMs taken during pregnancy. Many cultures have used HMs in pregnancy to improve wellbeing of the mother and/or baby, or to help decrease nausea and vomiting, treat infection, ease gastrointestinal problems, prepare for labor, induce labor, or ease labor pains. One of the reasons why pregnant women use HMs is an assumption that HMs are safer than conventional medicine. However, for pregnant women with pre-existing conditions like epilepsy and asthma, supplementation of conventional treatment with HMs may further complicate their care. The use of HMs is frequently not reported to healthcare professionals. Providers are often not questioning HM use, despite little being known about the HM safety and HM-drug interactions during pregnancy. This lack of knowledge on potential toxicity and the ability to interact with conventional treatments may impact both mother and fetus. There is a need for education of women and their healthcare professionals to move away from the idea of HMs not being harmful. Healthcare professionals need to question women on whether they use any HMs or natural products during pregnancy, especially when conventional treatment is less efficient and/or adverse events have occurred as herbal-drug interactions could be the reason for these observations. Additionally, more preclinical and clinical studies are needed to evaluate HM efficacy and toxicity.
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Affiliation(s)
- Sílvia M Illamola
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, United States
| | - Ogochukwu U Amaeze
- Department of Clinical Pharmacy and Biopharmacy, Faculty of Pharmacy, University of Lagos, Lagos, Nigeria
| | - Lubov V Krepkova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Angela K Birnbaum
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, United States
| | - Ashwin Karanam
- Department of Experimental and Clinical Pharmacology, College of Pharmacy, University of Minnesota, Minneapolis, MN, United States
| | - Kathleen M Job
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Valentina V Bortnikova
- Center of Medicine, All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR), Moscow, Russia
| | - Catherine M T Sherwin
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Department of Pharmacotherapy, College of Pharmacy, University of Utah, Salt Lake City, UT, United States
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Department of Pathology, School of Medicine, University of Utah, Salt Lake City, UT, United States.,Pharmaceutics & Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, UT, United States
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15
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Wagstaff JS, Durrant RJ, Newman MG, Eason R, Ward RM, Sherwin CMT, Enioutina EY. Antibiotic Treatment of Suspected and Confirmed Neonatal Sepsis Within 28 Days of Birth: A Retrospective Analysis. Front Pharmacol 2019; 10:1191. [PMID: 31680968 PMCID: PMC6803465 DOI: 10.3389/fphar.2019.01191] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Accepted: 09/17/2019] [Indexed: 01/16/2023] Open
Abstract
Neonatal sepsis causes significant mortality and morbidity worldwide. Diagnosis is usually confirmed via blood culture results. Blood culture sepsis confirmation can take days and suffer from contamination and false negatives. Empiric therapy with antibiotics is common. This study aims to retrospectively describe and compare treatments of blood culture-confirmed and unconfirmed, but suspected, sepsis within the University of Utah Hospital system. Electronic health records were obtained from 1,248 neonates from January 1, 2006, to December 31, 2017. Sepsis was categorized into early-onset (≤3 days of birth, EOS) and late-onset (>3 and ≤28 days of birth, LOS) and categorized as culture-confirmed sepsis if a pathogen was cultured from the blood and unconfirmed if all blood cultures were negative with no potentially contaminated blood cultures. Of 1,010 neonates in the EOS cohort, 23 (2.3%) were culture-confirmed, most with Escherichia coli (42%). Treatment for unconfirmed EOS lasted an average of 6.1 days with primarily gentamicin and ampicillin while confirmed patients were treated for an average of 12.3 days with increased administration of cefotaxime. Of 311 neonates in the LOS cohort, 62 (20%) were culture-confirmed, most culturing coagulase negative staphylococci (46%). Treatment courses for unconfirmed LOS lasted an average of 7.8 days while confirmed patients were treated for an average of 11.4 days, these patients were primarily treated with vancomycin and gentamicin. The use of cefotaxime for unconfirmed EOS and LOS increased throughout the study period. Cefotaxime administration was associated with an increase in neonatal mortality, even when potential confounding factors were added to the logistic regression model (adjusted odds ratio 2.8, 95%CI [1.21, 6.88], p = 0.02). These results may not be generalized to all hospitals and the use of cefotaxime may be a surrogate for other factors. Given the low rate of blood culture positive diagnosis and the high exposure rate of empiric antibiotics, this patient population might benefit from improved diagnostics with reevaluation of antibiotic use guidelines.
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Affiliation(s)
- Jadon S Wagstaff
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Robert J Durrant
- Division of Medical Laboratory Science, Department of Pathology, School of Medicine, University of Utah, Salt Lake City, UT, United States
| | - Michael G Newman
- University of Utah Health Science Center, Salt Lake City, UT, United States
| | - Rachael Eason
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Division of Medical Laboratory Science, Department of Pathology, School of Medicine, University of Utah, Salt Lake City, UT, United States
| | - Robert M Ward
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States
| | - Catherine M T Sherwin
- Department of Pediatrics, Wright State University, Boonshoft School of Medicine, Dayton Children's Hospital, Dayton, OH, United States
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, United States.,Division of Medical Laboratory Science, Department of Pathology, School of Medicine, University of Utah, Salt Lake City, UT, United States.,Pharmaceutics & Pharmaceutical Chemistry, College of Pharmacy, University of Utah, Salt Lake City, UT, United States
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16
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Balch A, Wilkes J, Thorell E, Pavia A, Sherwin CMT, Enioutina EY. Changing trends in IVIG use in pediatric patients: A retrospective review of practices in a network of major USA pediatric hospitals. Int Immunopharmacol 2019; 76:105868. [PMID: 31487613 DOI: 10.1016/j.intimp.2019.105868] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 08/06/2019] [Accepted: 08/27/2019] [Indexed: 01/19/2023]
Abstract
The use of immunoglobulins is gradually increasing. Intravenous immunoglobulins (IVIG) are used as replacement therapy for primary and secondary immune deficiencies, and as an anti-inflammatory and immunomodulatory medication for the treatment of neurologic, dermatologic, and rheumatologic diseases. The objective of this study was to analyze trends in the IVIG use in pediatric patients hospitalized to 47 US-based children's hospitals from 2007 to 2014. IVIG was used for the treatment of >2300 primary diagnoses in 53,648 unique patients. The number of IVIG admissions increased by 30.2% during the study period, while the mean rate of IVIG admissions/100,000 admissions increased only 5.8%. Most patients receiving IVIG were children and adolescents. IVIG was frequently used off-label or for the treatment of FDA-approved indications in children under two years of age and BMT patients <20 years of age. Primary immune deficiencies represented only 1.2% of all IVIG admissions. Pediatric patients with mucocutaneous lymph node syndrome (Kawasaki disease, KD) and idiopathic thrombocytopenic purpura (ITP) were two primary consumers of the IVIG. Another top-ranked indications were acute infectious polyneuritis (Guillain-Barré syndrome, GBS) and prophylaxis of infections in patients receiving antineoplastic chemotherapy. IVIG usage is a dynamic process guided by emerging evidence and FDA approval for new indications. IVIG was mostly prescribed for treatment of diseases with pathologic immune responses to foreign of self-antigens. These indications usually, require higher amounts of IVIG per admission. More studies are needed to understand whether IVIG treatments of off-label indications are effective and cost-efficient.
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Affiliation(s)
- Alfred Balch
- Department of Family and Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Jacob Wilkes
- Intermountain Healthcare, Salt Lake City, UT, USA
| | - Emily Thorell
- Division of Infectious Diseases, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Andrew Pavia
- Division of Infectious Diseases, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Catherine M T Sherwin
- Department of Pediatrics, Wright State University Boonshoft School of Medicine, Dayton Children's Hospital, Dayton, OH, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, Salt Lake City, UT, USA.
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17
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Job KM, Olson J, Stockmann C, Constance JE, Enioutina EY, Rower JE, Linakis MW, Balch AH, Yu T, Liu X, Thorell EA, Sherwin CMT. Pharmacodynamic studies of voriconazole: informing the clinical management of invasive fungal infections. Expert Rev Anti Infect Ther 2017; 14:731-46. [PMID: 27355512 DOI: 10.1080/14787210.2016.1207526] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Voriconazole is a broad-spectrum antifungal agent commonly used to treat invasive fungal infections (IFI), including aspergillosis, candidiasis, Scedosporium infection, and Fusarium infection. IFI often occur in immunocompromised patients, leading to increased morbidity and mortality. AREAS COVERED The objective of this review is to summarize the pharmacodynamic properties of voriconazole and to provide considerations for potential optimal dosing strategies. Studies have demonstrated superior clinical response when an AUC/MIC >25 or Cmin/MIC >1 is attained in adult patients, correlating to a trough concentration range as narrow as 2-4.5 mg/L; however, these targets are poorly established in the pediatric population. Topics in this discussion include voriconazole use in multiple age groups, predisposing patient factors for IFI, and considerations for clinicians managing IFI. Expert commentary: The relationship between voriconazole dosing and exposure is not well defined due to the large inter- and intra-subject variability. Development of comprehensive decision support tools for individualizing dosing, particularly in children who require higher dosing, will help to increase the probability of achieving therapeutic efficacy and decrease sub-therapeutic dosing and adverse events.
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Affiliation(s)
- Kathleen M Job
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Jared Olson
- b Pharmacy, Primary Children's Hospital, Intermountain Healthcare , University of Utah , Salt Lake City , UT , USA
| | - Chris Stockmann
- c Division of Pediatric Infectious Diseases, Department of Pediatrics , University of Utah , Salt Lake City , UT , USA
| | - Jonathan E Constance
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Elena Y Enioutina
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA.,d Division of Microbiology and Immunology, Department of Pathology , University of Utah , Salt Lake City , UT , USA
| | - Joseph E Rower
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Matthew W Linakis
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Alfred H Balch
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Tian Yu
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Xiaoxi Liu
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA
| | - Emily A Thorell
- c Division of Pediatric Infectious Diseases, Department of Pediatrics , University of Utah , Salt Lake City , UT , USA
| | - Catherine M T Sherwin
- a Division of Clinical Pharmacology , University of Utah , Salt Lake City , UT , USA.,e Department of Pharmacology and Toxicology, College of Pharmacy , University of Utah , Salt Lake City , UT , USA
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18
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Biltaji E, Kumar SS, Enioutina EY, Sherwin CMT. Can ad hoc analyses of clinical trials help personalize treatment decisions? Br J Clin Pharmacol 2017; 83:2337-2338. [PMID: 28815756 DOI: 10.1111/bcp.13377] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 07/10/2017] [Indexed: 12/01/2022] Open
Affiliation(s)
- Eman Biltaji
- Division of Clinical Pharmacology, Department of Paediatrics, University of Utah, School of Medicine, Salt Lake City, Utah, USA.,Department of Pharmacotherapy, College of Pharmacy, University of Utah, Salt Lake City, Utah, USA.,Program in Personalized Health, University of Utah, Salt Lake City, Utah, USA
| | - Shaun S Kumar
- Division of Clinical Pharmacology, Department of Paediatrics, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Paediatrics, University of Utah, School of Medicine, Salt Lake City, Utah, USA.,Department of Pathology, University of Utah, School of Medicine, Salt Lake City, Utah, USA
| | - Catherine M T Sherwin
- Division of Clinical Pharmacology, Department of Paediatrics, University of Utah, School of Medicine, Salt Lake City, Utah, USA.,Department of Pharmacotherapy, College of Pharmacy, University of Utah, Salt Lake City, Utah, USA
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19
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Yu T, Enioutina EY, Brunner HI, Vinks AA, Sherwin CM. Clinical Pharmacokinetics and Pharmacodynamics of Biologic Therapeutics for Treatment of Systemic Lupus Erythematosus. Clin Pharmacokinet 2017; 56:107-125. [PMID: 27384528 PMCID: PMC5575762 DOI: 10.1007/s40262-016-0426-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Systemic lupus erythematosus (SLE) is a multifactorial autoimmune disease with potentially severe clinical manifestation that mainly affects women of child-bearing age. Patients who do not respond to standard-of-care therapies, such as corticosteroids and immunosuppressants, require biologic therapeutics that specifically target a single or multiple SLE pathogenesis pathways. This review summarizes the clinical pharmacokinetic and pharmacodynamic characteristics of biologic agents that are approved, used off-label, or in the active pipeline of drug development for SLE patients. Depending on the type of target, the interacting biologics may exhibit linear (non-specific) or non-linear (target-mediated) disposition profiles, with terminal half-lives varying from approximately 1 week to 1 month. Biologics given by subcutaneous administration, which offers dosing flexibility over intravenous administration, demonstrated a relatively slow absorption with a time to maximum concentration of approximately 1 day to 2 weeks and a variable bioavailability of 30-82 %. The population pharmacokinetics of monoclonal antibodies were best described by a two-compartment model with central clearance and steady-state volume of distribution ranging from 0.176 to 0.215 L/day and 3.60-5.29 L, respectively. The between-subject variability in pharmacokinetic parameters were moderate (20-79 %) and could be partially explained by body size. The development of linked pharmacokinetic-pharmacodynamic models incorporating SLE disease biomarkers are an attractive strategy for use in dosing regimen simulation and optimization. The relationship between efficacy/adverse events and biologic concentration should be evaluated to improve clinical trial outcomes, especially for biologics in the advanced phase of drug development. New strategies, such as model-based precision dosing dashboards, could be utilized to incorporate information collected from therapeutic drug monitoring into pharmacokinetic/pharmacodynamic models to enable individualized dosing in real time.
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Affiliation(s)
- Tian Yu
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, SLC, Utah 295 Chipeta Way, Salt Lake City, UT, 84108, USA
| | - Elena Y Enioutina
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, SLC, Utah 295 Chipeta Way, Salt Lake City, UT, 84108, USA
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Hermine I Brunner
- Division of Rheumatology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Alexander A Vinks
- Division of Clinical Pharmacology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Catherine M Sherwin
- Division of Clinical Pharmacology, Department of Pediatrics, University of Utah School of Medicine, SLC, Utah 295 Chipeta Way, Salt Lake City, UT, 84108, USA.
- Department of Pediatrics, Clinical Trials Office, Salt Lake City, UT, USA.
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT, USA.
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20
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Teng L, Zu Q, Li G, Yu T, Job KM, Yang X, Di L, Sherwin CM, Enioutina EY. Herbal medicines: challenges in the modern world. Part 3. China and Japan. Expert Rev Clin Pharmacol 2016; 9:1225-33. [PMID: 27232545 DOI: 10.1080/17512433.2016.1195263] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION Medicinal plants, and formulations prepared from them, have been used in China and Japan for thousands of years. Nowadays, ancient formulations of Traditional Chinese and Kampo (Japanese) Medicines coexist with Western herbal medicines (HMs) and complement each other. HMs are used for the treatment of mild and chronic diseases, as an adjunct therapy, to improve wellbeing and delay aging, or as healthy (functional) foods. AREAS COVERED This article, a third part in a series of reviews, is focusing on history, use and regulation of the traditional and modern HMs in Japan and China. Materials available from legislative and governmental websites, PubMed and news media were used. Expert commentary: HMs are heavily regulated in both countries, often in a similar manner as conventional pharmaceutical drugs. The majority of herbal formulations are sold as over-the-counter medications supplied with leaflets describing indications and appropriate dosages for patients of different ages. Medical practitioners prescribe herbal formulations that are tailored to the needs of particular patients. Both countries had problems with adverse drug reactions and toxicity of single herbs and herbal formulations that have been investigated by authorities, and some drugs have been removed from the market.
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Affiliation(s)
- Lida Teng
- a Department of Drug Policy & Management, Graduate School of Pharmaceutical Sciences , The University of Tokyo , Tokyo , Japan
| | - Qiang Zu
- b School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China.,c Jiangsu Engineering Research Center for Efficient Delivery System of Traditional Chinese Medicine , Nanjing , China.,d Nanjing Engineering Research Center for Industrialization Traditional Chinese Medicine Pellets , Nanjing , China
| | - Gangzhou Li
- e Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA
| | - Tian Yu
- e Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA
| | - Kathleen M Job
- e Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA
| | - Xiaoyan Yang
- f Division of Pharmaceutical Sciences, School of Pharmacy , University of Missouri-Kansas City , Kansas City , MI , USA
| | - Liuqing Di
- b School of Pharmacy , Nanjing University of Chinese Medicine , Nanjing , China.,c Jiangsu Engineering Research Center for Efficient Delivery System of Traditional Chinese Medicine , Nanjing , China.,d Nanjing Engineering Research Center for Industrialization Traditional Chinese Medicine Pellets , Nanjing , China
| | - Catherine Mt Sherwin
- e Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,g Department of Pharmacology and Toxicology , University of Utah , Salt Lake City , UT , USA
| | - Elena Y Enioutina
- e Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,h Division of Microbiology and Immunology, the Department of Pathology , University of Utah School of Medicine , Salt Lake City , UT , USA
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21
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Sammons HM, Gubarev MI, Krepkova LV, Bortnikova VV, Corrick F, Job KM, Sherwin CM, Enioutina EY. Herbal medicines: challenges in the modern world. Part 2. European Union and Russia. Expert Rev Clin Pharmacol 2016; 9:1117-27. [PMID: 27171366 DOI: 10.1080/17512433.2016.1189326] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
INTRODUCTION Herbal medicines (HMs) have been well known to people of the European Union (EU) and Russia for centuries. Currently, Western HMs can be classified into two categories, plant-derived conventional medicines and dietary supplements. Interest to HMs has grown rapidly in all countries during the past two decades. AREAS COVERED The main goal of this review article is to present the history of HMs in the EU and Russia, forms of modern HMs, including Oriental Medicines that are popular among consumers of both countries. Additional discussion points comprise safety and adulteration issues associated with HMs, including regulatory changes and new legislative measures undertaken by the authorities. Materials available from legislative and governmental websites, PubMed and news media were used. Expert commentary: Due to cultural diversities in the EU and Russia, traditional HMs of other regions, particularly Chinese Traditional and Ayurvedic medicines, are also popular. Recently, dietary supplements containing multiple herbal and other natural products have flooded the EU and Russian markets. Pharmacovigilance in these markets is challenging in terms of establishing quality and safety of ingredients, determining efficacy, and defining risks of herb-herb and herb-drug interactions. Both the EU and Russia have introduced new legislation aimed to overcome these deficiencies.
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Affiliation(s)
- Helen M Sammons
- a Division of Medical Sciences & Graduate Entry Medicine, School of Medicine , University of Nottingham, Royal Derby Hospital Centre , Derby , UK
| | | | - Lubov V Krepkova
- c Division of Toxicology, Center of Medicine , All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR) , Moscow , Russia
| | - Valentina V Bortnikova
- c Division of Toxicology, Center of Medicine , All-Russian Research Institute of Medicinal and Aromatic Plants (VILAR) , Moscow , Russia
| | - Fenella Corrick
- a Division of Medical Sciences & Graduate Entry Medicine, School of Medicine , University of Nottingham, Royal Derby Hospital Centre , Derby , UK
| | - Kathleen M Job
- d Division of Clinical Pharmacology, The Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA
| | - Catherine Mt Sherwin
- d Division of Clinical Pharmacology, The Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,e Department of Pharmacology and Toxicology , University of Utah , Salt Lake City , UT , USA
| | - Elena Y Enioutina
- d Division of Clinical Pharmacology, The Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,f Division of Microbiology and Immunology, the Department of Pathology , University of Utah School of Medicine , Salt Lake City , UT , USA
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22
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Abstract
As in many developed countries, herbal medicines (HMs) are widely used in Australia and New Zealand (NZ). The popularity of HM continues to rise. Western, Asian and indigenous HMs are used, reflecting the cultural diversity of people in this region. HMs in Australia are regulated on a risk-based system with many HMs identified as being low risk. The legislation was reviewed in 2015 and proposals for change are under consideration. In NZ, it is recognised that current regulations for HMs and other natural health products (NHPs) do not adequately protect public health. NZ is entering a phase of regulatory change for this sector, and proposals for a 'light-touch' regulatory framework for NHPs are planned to be introduced into legislation during 2016.
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Affiliation(s)
- Joanne Barnes
- a Faculty of Medical and Health Sciences , School of Pharmacy, University of Auckland , Auckland , New Zealand
| | - Andrew J McLachlan
- b Faculty of Pharmacy and Centre for Education and Research on Ageing , University of Sydney and Concord Hospital , Sydney , NSW , Australia.,c NHMRC Centre for Research Excellence in Medicines and Ageing , the University of Sydney , Sydney , Australia
| | - Catherine Mt Sherwin
- d Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,e Department of Pharmacology and Toxicology , University of Utah , Salt Lake City , UT , USA
| | - Elena Y Enioutina
- d Division of Clinical Pharmacology, the Department of Pediatrics , University of Utah School of Medicine , Salt Lake City , UT , USA.,f Division of Microbiology and Immunology, the Department of Pathology , University of Utah School of Medicine , Salt Lake City , UT , USA
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23
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Gahring LC, Enioutina EY, Myers EJ, Spangrude GJ, Efimova OV, Kelley TW, Tvrdik P, Capecchi MR, Rogers SW. Nicotinic receptor alpha7 expression identifies a novel hematopoietic progenitor lineage. PLoS One 2013; 8:e57481. [PMID: 23469197 PMCID: PMC3586088 DOI: 10.1371/journal.pone.0057481] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Accepted: 01/22/2013] [Indexed: 11/19/2022] Open
Abstract
How inflammatory responses are mechanistically modulated by nicotinic acetylcholine receptors (nAChR), especially by receptors composed of alpha7 (α7) subunits, is poorly defined. This includes a precise definition of cells that express α7 and how these impact on innate inflammatory responses. To this aim we used mice generated through homologous recombination that express an Ires-Cre-recombinase bi-cistronic extension of the endogenous α7 gene that when crossed with a reporter mouse expressing Rosa26-LoxP (yellow fluorescent protein (YFP)) marks in the offspring those cells of the α7 cell lineage (α7lin+). In the adult, on average 20–25 percent of the total CD45+ myeloid and lymphoid cells of the bone marrow (BM), blood, spleen, lymph nodes, and Peyers patches are α7lin+, although variability between litter mates in this value is observed. This hematopoietic α7lin+ subpopulation is also found in Sca1+cKit+ BM cells suggesting the α7 lineage is established early during hematopoiesis and the ratio remains stable in the individual thereafter as measured for at least 18 months. Both α7lin+ and α7lin– BM cells can reconstitute the immune system of naïve irradiated recipient mice and the α7lin+:α7lin– beginning ratio is stable in the recipient after reconstitution. Functionally the α7lin+:α7lin– lineages differ in response to LPS challenge. Most notable is the response to LPS as demonstrated by an enhanced production of IL-12/23(p40) by the α7lin+ cells. These studies demonstrate that α7lin+ identifies a novel subpopulation of bone marrow cells that include hematopoietic progenitor cells that can re-populate an animal’s inflammatory/immune system. These findings suggest that α7 exhibits a pleiotropic role in the hematopoietic system that includes both the direct modulation of pro-inflammatory cell composition and later in the adult the role of modulating pro-inflammatory responses that would impact upon an individual’s lifelong response to inflammation and infection.
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Affiliation(s)
- Lorise C Gahring
- Geriatric Research, Education, and Clinical Center, Salt Lake City Veterans Administration Medical Center, Salt Lake City, Utah, United States of America.
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24
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Ahlem CN, Auci DL, Nicoletti F, Pieters R, Kennedy MR, Page TM, Reading CL, Enioutina EY, Frincke JM. Pharmacology and immune modulating properties of 5-androstene-3β,7β,17β-triol, a DHEA metabolite in the human metabolome. J Steroid Biochem Mol Biol 2011; 126:87-94. [PMID: 21570467 DOI: 10.1016/j.jsbmb.2011.04.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 04/23/2011] [Accepted: 04/24/2011] [Indexed: 10/18/2022]
Abstract
Androst-5-ene-3β,7β,17β-triol (βAET) is an anti-inflammatory metabolite of DHEA that is found naturally in humans, but in rodents only after exogenous DHEA administration. Unlike DHEA, C-7-oxidized DHEA metabolites cannot be metabolized into potent androgens or estrogens, and are not peroxisome proliferators in rodents. The objective of our current studies was to characterize the pharmacology of βAET to enable clinical trials in humans. The pharmacology of βAET was characterized by pharmacokinetics, drug metabolism, nuclear hormone receptor interactions, androgenicity, estrogenicity, and systemic toxicity studies. βAET's acute anti-inflammatory activity and immune modulating characteristics were measured in vitro in RAW264.7 cells and in vivo in murine models with parenteral administration. βAET was rapidly metabolized and cleared from circulation in mice and monkeys. βAET was weakly androgenic and estrogenic in immature rodents, but not bound by androgen, estrogen, progesterone, or glucocorticoid nuclear hormone receptors. βAET did not induce peroxisome proliferation, nor was it systemically toxic or trophic for sex hormone responsive tissues in mature rats and monkeys. βAET significantly attenuated acute inflammation both in vitro and in vivo, augmented immune responses in adult mice, and reversed immune senescence in aged mice. βAET may contribute to the anti-inflammatory activity in rodents attributed to DHEA. Unlike DHEA, βAET's anti-inflammatory activity cannot be ascribed to activation of PPARs, androgen, or estrogen nuclear hormone receptors. Exogenous βAET is unlikely to produce untoward toxicity or hormonal perturbations in humans.
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25
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Contreras YM, Yu X, Hale MA, Callaway CW, Bareyan D, McKnight RA, Joss-Moore LA, Enioutina EY, Lane RH. Intrauterine growth restriction alters T-lymphocyte cell number and dual specificity phosphatase 1 levels in the thymus of newborn and juvenile rats. Pediatr Res 2011; 70:123-9. [PMID: 21505375 DOI: 10.1203/pdr.0b013e31821f6e75] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Intrauterine growth restricted (IUGR) infants have increased susceptibility to infection associated with higher risk of illness and death. Dual specificity phosphatase 1 (DUSP1), which is transcribed in the thymus, increases in quantity as T cells mature and differentiate into CD4+ cells. Little is known about how IUGR affects DUSP1 levels and T-cell subpopulations over time. We hypothesized that IUGR would decrease cell count, CD4+ and CD8+ subpopulations of T lymphocytes, and DUSP1 levels in IUGR rat thymus and spleen. Bilateral uterine artery ligation produced IUGR rats. Thymus and spleen were harvested at P0 and P21. Flow cytometry was used to compare CD4+ and CD8+ lymphocyte populations. Real-time RT-PCR and Western blotting were used to determine DUSP1 quantity. IUGR significantly decreased total cell count in P0 and P21 IUGR male and female thymus. IUGR significantly increased CD4+ cells in IUGR P0 males and females, significantly decreased CD4+ cells in P21 female thymus, and significantly altered DUSP1 levels in the IUGR female thymus at P0 and P21, although it is not yet known whether the change in DUSP1 levels is due to a change in the level per cell or to a change in cellular composition of the thymus.
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Affiliation(s)
- Yvonne M Contreras
- Department of Pediatrics, University of Utah, Salt Lake City, Utah 84158, USA
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26
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Abstract
The reduced efficiency of the mammalian immune system with aging increases host susceptibility to infectious and autoimmune diseases. However, the mechanisms responsible for these pathologic changes are not well understood. In this study, we demonstrate that the bone marrow, blood, and secondary lymphoid organs of healthy aged mice possess increased numbers of immature myeloid cells that are phenotypically similar to myeloid-derived suppressor cells found in lymphoid organs of mice with progressive tumors and other pathologic conditions associated with chronic inflammation. These cells are characterized by the presence of Gr1 and CD11b markers on their surfaces. Gr1(+)CD11b(+) cells isolated from aged mice possess an ability to suppress T cell proliferation/activation and produce heightened levels of proinflammatory cytokines, both constitutively and upon activation, including IL-12, which promotes an excessive production of IFN-γ. IFN-γ priming is essential for excessive proinflammatory cytokine production and the suppressive activities by Gr1(+)CD11b(+) cells from aged mice. These cells suppress T cell proliferation through an NO-dependent mechanism, as depletion of splenic Gr1(+) cells reduces NO levels and restores T cell proliferation. Insights into mechanisms responsible for the proinflammatory and immune suppressive activities of Gr1(+)CD11b(+) cells from aged mice have uncovered a defective PI3K-Akt signaling pathway, leading to a reduced Akt-dependent inactivation of GSK3β. Our data demonstrate that abnormal activities of the Gr1(+)CD11b(+) myeloid cell population from aged mice could play a significant role in the mechanisms responsible for immune senescence.
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Affiliation(s)
- Elena Y Enioutina
- Department of Pathology, University of Utah, Salt Lake City, UT 84132, USA.
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27
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Heithoff DM, Enioutina EY, Bareyan D, Daynes RA, Mahan MJ. Conditions that diminish myeloid-derived suppressor cell activities stimulate cross-protective immunity. Infect Immun 2008; 76:5191-9. [PMID: 18765736 PMCID: PMC2573365 DOI: 10.1128/iai.00759-08] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2008] [Revised: 08/07/2008] [Accepted: 08/21/2008] [Indexed: 01/04/2023] Open
Abstract
Immunity conferred by conventional vaccines is restricted to a narrow range of closely related strains, highlighting the unmet medical need for the development of vaccines that elicit protection against multiple pathogenic serotypes. Here we show that a Salmonella bivalent vaccine comprised of strains that lack and overproduce DNA adenine methylase (Dam) conferred cross-protective immunity to salmonella clinical isolates of human and animal origin. Protective immunity directly correlated with increased levels of cross-reactive opsonizing antibodies and memory T cells and a diminished expansion of myeloid-derived suppressor cells (MDSCs) that are responsible for the immune suppression linked to several conditions of host stress, including chronic microbial infections, traumatic insults, and many forms of cancer. Further, aged mice contained increased numbers of MDSCs and were more susceptible to Salmonella infection than young mice, suggesting a role for these cells in the immune declines associated with the natural aging process. These data suggest that interventions capable of reducing MDSC presence and activities may allow corresponding increases in B- and T-cell stimulation and benefit the ability of immunologically diverse populations to be effectively vaccinated as well as reducing the risk of susceptible individuals to infectious disease.
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Affiliation(s)
- Douglas M Heithoff
- Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
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28
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Heithoff DM, Shimp WR, Lau PW, Badie G, Enioutina EY, Daynes RA, Byrne BA, House JK, Mahan MJ. Human Salmonella clinical isolates distinct from those of animal origin. Appl Environ Microbiol 2008; 74:1757-66. [PMID: 18245251 PMCID: PMC2268321 DOI: 10.1128/aem.02740-07] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2007] [Accepted: 01/19/2008] [Indexed: 12/18/2022] Open
Abstract
The global trend toward intensive livestock production has led to significant public health risks and industry-associated losses due to an increased incidence of disease and contamination of livestock-derived food products. A potential factor contributing to these health concerns is the prospect that selective pressure within a particular host may give rise to bacterial strain variants that exhibit enhanced fitness in the present host relative to that in the parental host from which the strain was derived. Here, we assessed 184 Salmonella enterica human and animal clinical isolates for their virulence capacities in mice and for the presence of the Salmonella virulence plasmid encoding the SpvB actin cytotoxin required for systemic survival and Pef fimbriae, implicated in adherence to the murine intestinal epithelium. All (21 of 21) serovar Typhimurium clinical isolates derived from animals were virulent in mice, whereas many (16 of 41) serovar Typhimurium isolates derived from human salmonellosis patients lacked this capacity. Additionally, many (10 of 29) serovar Typhimurium isolates derived from gastroenteritis patients did not possess the Salmonella virulence plasmid, in contrast to all animal and human bacteremia isolates tested. Lastly, among serovar Typhimurium isolates that harbored the Salmonella virulence plasmid, 6 of 31 derived from human salmonellosis patients were avirulent in mice, which is in contrast to the virulent phenotype exhibited by all the animal isolates examined. These studies suggest that Salmonella isolates derived from human salmonellosis patients are distinct from those of animal origin. The characterization of these bacterial strain variants may provide insight into their relative pathogenicities as well as into the development of treatment and prophylactic strategies for salmonellosis.
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Affiliation(s)
- Douglas M Heithoff
- Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, CA 93106, USA
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29
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Heithoff DM, Badie G, Julio SM, Enioutina EY, Daynes RA, Sinsheimer RL, Mahan MJ. In vivo-selected mutations in methyl-directed mismatch repair suppress the virulence attenuation of Salmonella dam mutant strains following intraperitoneal, but not oral, infection of naïve mice. J Bacteriol 2007; 189:4708-17. [PMID: 17468250 PMCID: PMC1913454 DOI: 10.1128/jb.00299-07] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Accepted: 04/18/2007] [Indexed: 11/20/2022] Open
Abstract
Salmonella enterica serovar Typhimurium that lacks the DNA adenine methylase (Dam) ectopically expresses multiple genes that are preferentially expressed during infection, is attenuated for virulence, and confers heightened immunity in vaccinated hosts. The safety of dam mutant Salmonella vaccines was evaluated by screening within infected mice for isolates that have an increased capacity to cause disease relative to the attenuated parental strain. Since dam mutant strains are sensitive to the DNA base analog 2-aminopurine (2-AP), we screened for 2-AP-resistant (2-AP(r)) isolates in systemic tissues of mice infected with dam mutant Salmonella. Such 2-AP(r) derivatives were isolated following intraperitoneal but not oral administration and were shown to be competent for infectivity via intraperitoneal but not oral infection of naïve mice. These 2-AP(r) derivatives were deficient in methyl-directed mismatch repair and were resistant to nitric oxide, yet they retained the bile-sensitive phenotype of the parental dam mutant strain. Additionally, introduction of a mutH null mutation into dam mutant cells suppressed the inherent defects in intraperitoneal infectivity and nitric oxide resistance, as well as overexpression of SpvB, an actin cytotoxin required for Salmonella systemic survival. These data suggest that restoration of intraperitoneal virulence of dam mutant strains is associated with deficiencies in methyl-directed mismatch repair that correlate with the production of systemically related virulence functions.
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Affiliation(s)
- Douglas M Heithoff
- Department of Molecular, Cellular and Developmental Biology, University of California-Santa Barbara, CA 93106, USA
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30
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Enioutina EY, Bareyan D, Daynes RA. Vitamin D3-mediated alterations to myeloid dendritic cell trafficking in vivo expand the scope of their antigen presenting properties. Vaccine 2006; 25:1236-49. [PMID: 17092617 DOI: 10.1016/j.vaccine.2006.10.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2006] [Revised: 09/22/2006] [Accepted: 10/05/2006] [Indexed: 01/23/2023]
Abstract
The mucosal immune system provides the host with a first line of adaptive immune defense against invasion by many species of pathogenic microorganisms and their secreted products. Calcitriol, the active form of Vitamin D3 (VD3), promotes the induction of mucosal immunity in mice when added to subcutaneously administered vaccine formulations. Dendritic cells (DCs) activated at vaccination sites where VD3 is present gain the capacity to bypass sequestration in the draining lymph node and traffic to the Peyer's Patches (PP) of immunized animals. By employing protocols that allow the effective tracking of endogenous or adoptively transferred myeloid DCs in vivo, we found that VD3 influences on the trafficking of fully differentiated immature DCs were temporary, and occur without negative effects to antigen processing or peptide presentation to CD4+ T cells. In contrast, DCs differentiated from hematopoietic precursors in the presence of VD3 (conditioned DCs), were markedly compromised in their antigen presenting properties, while manifesting clear alterations to their trafficking properties in vivo. Similar to the recent finding of VD3-mediated enhancement of innate immune protection, our findings suggest that VD3 could also play an important role in controlling the types of immune effector responses elicited subsequent to either infection or vaccination.
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MESH Headings
- Adjuvants, Immunologic
- Animals
- Antigen Presentation/drug effects
- Antigen Presentation/immunology
- Bone Marrow Cells/immunology
- CD4-Positive T-Lymphocytes/immunology
- Chemotaxis, Leukocyte/immunology
- Cholecalciferol/pharmacology
- Dendritic Cells/drug effects
- Dendritic Cells/immunology
- Female
- Immunity, Mucosal/immunology
- Immunotherapy, Adoptive
- Lymphoid Tissue/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C3H
- Mice, Transgenic
- Myeloid Cells/drug effects
- Myeloid Cells/immunology
- Receptors, CCR7
- Receptors, Chemokine/biosynthesis
- Receptors, Chemokine/genetics
- Skin/cytology
- Skin/immunology
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Affiliation(s)
- Elena Y Enioutina
- Department of Pathology, University of Utah Medical School, 30 North 1900 East, Salt Lake City, UT 84132, USA.
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31
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Abstract
The elderly suffer impairments to their immune system, evidenced by higher susceptibility to infections, cancer, and many diseases believed to be autoimmune in nature. A dysregulated overexpression of many proinflammatory cytokines also occurs with aging, as does the synthesis of enzymes that control expression of inflammatory lipid mediators and reactive oxygen species. An inappropriate activation of redox-controlled transcription factors, like nuclear factor-kappaB, occurs in many tissues from aged donors, and has been linked to excesses in cellular oxidative stress. Recently, the peroxisome proliferator-activated receptor-alpha (PPARalpha) has been evaluated for its effects on inflammatory and adaptive immune processes. PPARalpha provides redox-balancing influences on various lymphoid cell types and their inducible responses. We recently discovered that PPARalpha transiently suppresses the transcription of gamma-interferon (IFNgamma) by inhibiting the induction of T-bet. We now report that PPARalpha expression in CD4+ T cells is affected by the aging process. Lower PPARalpha levels are present in aged CD4+ T cells, and appear responsible for the suppressed interleukin-2 and exaggerated IFNgamma responses by these cells. Restoration of PPARalpha, T-bet, interleukin-2, and IFNgamma responses was found in T cells from aged animals supplemented with vitamin E, suggesting that interventions that focus on restoring redox balance might benefit the ailing aged immune system.
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MESH Headings
- Administration, Oral
- Age Factors
- Aging/immunology
- Animals
- Antibodies/pharmacology
- Blotting, Western
- CD28 Antigens/immunology
- CD3 Complex/immunology
- CD4-Positive T-Lymphocytes/drug effects
- CD4-Positive T-Lymphocytes/physiology
- Enzyme-Linked Immunosorbent Assay
- Female
- Flow Cytometry
- Gene Expression
- Interferon-gamma/metabolism
- Interleukin-2/metabolism
- L-Selectin/analysis
- L-Selectin/metabolism
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Mice, Transgenic
- Ovalbumin/immunology
- Oxidation-Reduction
- Receptors, Antigen, T-Cell/genetics
- Receptors, Antigen, T-Cell/immunology
- Receptors, Cytoplasmic and Nuclear/genetics
- Receptors, Cytoplasmic and Nuclear/metabolism
- T-Box Domain Proteins
- Transcription Factors/genetics
- Transcription Factors/metabolism
- Vitamin E/pharmacology
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Affiliation(s)
- Raymond A Daynes
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, UT 84132-2501, USA.
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32
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Abstract
It has been reported that common mucosal immunity can be efficiently induced in mice following immunization through the skin with vaccine formulations containing either the active form of vitamin D, or chemical agents capable of locally enhancing cyclic adenosine monophosphate levels. Herein, we report that exposure of skin to ultraviolet radiation B (UVB) can be employed as a means to alter systemic humoral immune responses and to promote the induction of mucosal immunity to protein antigens delivered into UVB-exposed skin sites. Our data indicates that the skin, as a vaccination site, can be manipulated to allow efficient induction of common mucosal and systemic immune responses.
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Affiliation(s)
- Elena Y Enioutina
- Department of Pathology, University of Utah, 30 N. 1900 East, Salt Lake City 84132-2501, USA
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33
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Abstract
The present studies demonstrate that the immunization of aged mice with Diphtheria toxoid in formulations containing unmethylated immunostimulatory CpG motifs, promotes the successful development of immune responses that are qualitatively and quantitatively comparable to those induced in young animals vaccinated in a similar manner. Aged mice given vaccines containing CpG oligodeoxynucleotides (ODNs) expressed primary and secondary systemic humoral immune responses having isotype profiles consistent with an enhancement in Th-1 type immunity. The ability to generate common mucosal immunity was also restored in aged animals given CpG ODN-containing vaccines. Dendritic cells (DCs) were determined to represent one of the cellular targets of CpG ODN activities in aged mice since restoration of immune function was observed when DCs from aged donors were pulsed with antigen and CpG ODNs, prior to injection into syngeneic young adult or aged recipients. Interestingly, antigen-pulsed DCs from young donors were fully capable of stimulating immune responses following their injection into syngeneic young adult or aged hosts, without a need for exposure to CpG ODNs. Although the mechanism(s) by which CpG DNA exerts its beneficial adjuvant effects on the aged immune system remains unclear, our findings suggest that the incorporation of CpG ODNs into vaccine formulations provided to the aged could prove useful in the development of more effective vaccines for the elderly.
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Affiliation(s)
- B M Manning
- Department of Pathology, University of Utah, 50 N. Medical Drive, Salt Lake City, UT 84132, USA
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34
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Abstract
Salmonella isolates that lack or overproduce DNA adenine methylase (Dam) elicited a cross-protective immune response to different Salmonella serovars. The protection afforded by the Salmonella enterica serovar Typhimurium Dam vaccine was greater than that elicited in mice that survived a virulent infection. S. enterica serovar Typhimurium Dam mutant strains exhibited enhanced sensitivity to mediators of innate immunity such as antimicrobial peptides, bile salts, and hydrogen peroxide. Also, S. enterica serovar Typhimurium Dam(-) vaccines were not immunosuppressive; unlike wild-type vaccines, they failed to induce increased nitric oxide levels and permitted a subsequent robust humoral response to diptheria toxoid antigen in infected mice. Dam mutant strains exhibited a low-grade persistence which, coupled with the nonimmunosuppression and the ectopic protein expression caused by altered levels of Dam, may provide an expanded source of potential antigens in vaccinated hosts.
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Affiliation(s)
- D M Heithoff
- Department of Molecular, Cellular and Developmental Biology, University of California, Santa Barbara, California 93106, USA
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35
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Enioutina EY, Visic D, Daynes RA. The induction of systemic and mucosal immune responses to antigen-adjuvant compositions administered into the skin: alterations in the migratory properties of dendritic cells appears to be important for stimulating mucosal immunity. Vaccine 2000; 18:2753-67. [PMID: 10781863 DOI: 10.1016/s0264-410x(00)00059-1] [Citation(s) in RCA: 87] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The properties of various vaccine-adjuvant formulations that are capable of inducing both systemic and common mucosal immunity subsequent to their intradermal administration are described. Effective mucosal adjuvants, including bacterial toxins, chemical enhancers of cyclic AMP, and the active form of vitamin D3, all shared the ability to promote dendritic cell migration from the skin to Peyer's patches subsequent to antigen induced maturation. Our data suggests that skin dendritic cells may function as effective antigen presenting cells for the induction of mucosal immune responses, if microenvironmental conditions are appropriately manipulated subsequent to their stimulation by antigen.
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Affiliation(s)
- E Y Enioutina
- Department of Pathology, University of Utah, 50 N. Medical Drive, Salt Lake City, UT 84132, USA
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Abstract
Common mucosal immune responses were depressed in aged mice that were orally immunized with Haemophilus influenzae type b oligosaccharide conjugated to Diphtheria CRM197 protein (Hib-DT) vaccine using cholera toxin as the mucosal adjuvant. Both common mucosal and systemic humoral immune responses were also depressed in aged mice that were subcutaneously immunized with vaccine formulations containing Hib-DT plus 1alpha,25-dihydroxyvitamin D(3) (1,25(OH)(2)D(3)). Dietary supplementation of aged mice with either the antioxidant vitamin E, or with known activators of the alpha isoform of the peroxisome proliferator activated receptor (PPAR-alpha) was capable of restoring their mucosal and systemic humoral immune responses to mature adult levels, by both the oral and subcutaneous routes of immunization. These data support a hypothesis that some aspects of immunosenescence are due to dysregulations in cellular functions, and are not due to any irreversible defects in cellular components of the immune system.
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Affiliation(s)
- E Y Enioutina
- Department of Pathology, University of Utah, Salt Lake City, UT, USA
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Enioutina EY, Visic D, McGee ZA, Daynes RA. The induction of systemic and mucosal immune responses following the subcutaneous immunization of mature adult mice: characterization of the antibodies in mucosal secretions of animals immunized with antigen formulations containing a vitamin D3 adjuvant. Vaccine 1999; 17:3050-64. [PMID: 10462240 DOI: 10.1016/s0264-410x(99)00147-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Systemic and mucosal immune responses were effectively induced following the subcutaneous administration of Haemophilus influenzae type b oligosaccharide conjugated to diphtheria toxoid vaccine in a formulation containing the active form of vitamin D3. IgA and IgG antibodies with specificity for both the protein and oligosaccharide components of the vaccine were detectable in mucosal secretions following immunization. The IgA and IgG mucosal antibodies were produced locally, and were functional as demonstrated by their diphtheria toxin neutralizing activity. Our data suggests that subcutaneous tissues can effectively serve as effective antigen presenting sites for both mucosal and systemic immune responses to antigens administered in combination with vitamin D3.
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MESH Headings
- Adjuvants, Immunologic/pharmacology
- Animals
- Antibody Specificity
- Antigens, Bacterial/immunology
- Calcitriol/immunology
- Calcitriol/pharmacology
- Diphtheria/immunology
- Diphtheria Toxoid/administration & dosage
- Diphtheria Toxoid/immunology
- Epitopes/immunology
- Female
- Haemophilus Vaccines/administration & dosage
- Haemophilus Vaccines/immunology
- HeLa Cells
- Humans
- Immunity, Mucosal/immunology
- Immunization, Passive
- Immunoglobulin A, Secretory/biosynthesis
- Immunoglobulin A, Secretory/blood
- Immunoglobulin A, Secretory/chemistry
- Immunoglobulin G/biosynthesis
- Immunoglobulin G/blood
- Immunoglobulin G/chemistry
- Injections, Subcutaneous
- Mice
- Mice, Inbred C3H
- Oligosaccharides/immunology
- Vaccination
- Vaccines, Conjugate/administration & dosage
- Vaccines, Conjugate/immunology
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Affiliation(s)
- E Y Enioutina
- Department of Pathology, University of Utah, Salt Lake City 84132, USA
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Chen XP, Enioutina EY, Daynes RA. The control of IL-4 gene expression in activated murine T lymphocytes: a novel role for neu-1 sialidase. J Immunol 1997; 158:3070-80. [PMID: 9120259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
IL-4 is important in controlling the development of immune responses. Following activation with anti-CD3epsilon under serum-free conditions, splenocytes from most normal (neu-1b) mouse strains directly produced IL-4 and other T cell cytokines. However, splenic T cells from SM/J and B10.SM (H-2v, neu-1a) strain mice, deficient in neu-1 sialidase activity, failed to produce IL-4 but produced normal levels of IL-2 following activation. Moreover, sialidase-deficient mice produced markedly less IgE and IgG1 Abs following immunization with protein Ags than did mouse strains with normal neu-1 sialidase activity. Enriched T cells from neu-1a mice failed to be effectively primed with exogenous murine IL-4 to become IL-4-producing cells. Treatment of splenocytes or enriched T cells from neu-1a mice with bacterial sialidase prior to activation or IL-4 priming promoted their subsequent capacity to produce IL-4. In contrast, activation of T cells from neu-1b mice in the presence of a sialidase inhibitor almost completely blocked subsequent IL-4 production. The presence of IL-4 during priming enhanced T cell expression of neu-1-specific sialidase activity and increased the membrane expression of asialo-G(M1) compared with T cells activated without IL-4. These results suggest that T cell-associated neu-1 sialidase is required for early IL-4 production by splenic T cells and is involved in the IL-4 priming process of conventional T cells to become active IL-4 producers.
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Affiliation(s)
- X P Chen
- Department of Pathology, University of Utah School of Medicine, Salt Lake City 84132, USA
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Chen XP, Enioutina EY, Daynes RA. The control of IL-4 gene expression in activated murine T lymphocytes: a novel role for neu-1 sialidase. The Journal of Immunology 1997. [DOI: 10.4049/jimmunol.158.7.3070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
IL-4 is important in controlling the development of immune responses. Following activation with anti-CD3epsilon under serum-free conditions, splenocytes from most normal (neu-1b) mouse strains directly produced IL-4 and other T cell cytokines. However, splenic T cells from SM/J and B10.SM (H-2v, neu-1a) strain mice, deficient in neu-1 sialidase activity, failed to produce IL-4 but produced normal levels of IL-2 following activation. Moreover, sialidase-deficient mice produced markedly less IgE and IgG1 Abs following immunization with protein Ags than did mouse strains with normal neu-1 sialidase activity. Enriched T cells from neu-1a mice failed to be effectively primed with exogenous murine IL-4 to become IL-4-producing cells. Treatment of splenocytes or enriched T cells from neu-1a mice with bacterial sialidase prior to activation or IL-4 priming promoted their subsequent capacity to produce IL-4. In contrast, activation of T cells from neu-1b mice in the presence of a sialidase inhibitor almost completely blocked subsequent IL-4 production. The presence of IL-4 during priming enhanced T cell expression of neu-1-specific sialidase activity and increased the membrane expression of asialo-G(M1) compared with T cells activated without IL-4. These results suggest that T cell-associated neu-1 sialidase is required for early IL-4 production by splenic T cells and is involved in the IL-4 priming process of conventional T cells to become active IL-4 producers.
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Affiliation(s)
- X P Chen
- Department of Pathology, University of Utah School of Medicine, Salt Lake City 84132, USA
| | - E Y Enioutina
- Department of Pathology, University of Utah School of Medicine, Salt Lake City 84132, USA
| | - R A Daynes
- Department of Pathology, University of Utah School of Medicine, Salt Lake City 84132, USA
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Daynes RA, Enioutina EY, Butler S, Mu HH, McGee ZA, Araneo B A. Induction of common mucosal immunity by hormonally immunomodulated peripheral immunization. Infect Immun 1996; 64:1100-9. [PMID: 8606065 PMCID: PMC173890 DOI: 10.1128/iai.64.4.1100-1109.1996] [Citation(s) in RCA: 68] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
The study described in this report demonstrates that peripheral lymph nodes draining nonmucosal tissues can effectively serve as induction sites for the establishment of common mucosal immunity if the microenvironmental conditions are altered to mimic those normally present within mucosa-associated lymphoid tissues (e.g., Peyer's patches). Lymph node lymphocytes exposed in situ to the immunomodulatory influences of the hormone 1 alpha, 25-dihydroxy vitamin D 3 were found to produce less gamma interferon and interleukin-2 (IL-2) and far more IL-4, IL-5 and IL-10 than lymphocytes from control animals. When couples with vaccination with hepatitis B surface antigen (HBsAg), the hormone, immunomodulated switch from a peripheral lymph node phenotype to a Peyer's patch-like pattern promoted the induction of both a systemic and a common mucosal immune response. This was determined by the observed increased concentrations of serum anti-HBsAg antibody and by finding that anti-HBsAg secretory antibodies were detectable in urogenital, lachrymal, fecal and oral secretions only in the hormone-treated animals. In addition, specific antibody-secreting cells were detectable in the lamina propria of the lungs and small intestines of the hormone-treated animals subsequent to vaccination, indicating that the homing properties of antigen-specific B cells were being affected by the treatment procedure. The humoral and mucosal immune responses were further augmented if both 1 alpha, 25-dihydroxy vitamin D 3 and dehydroepiandrosterone were used together as hormonal immunomodulators. This novel immunization technique may afford new opportunities to effectively intervene in sexually transmitted diseases and other diseases caused by mucosal pathogens.
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Affiliation(s)
- R A Daynes
- Department of Pathology, University of Utah, Salt Lake City, 84132, USA
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