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Xu JH, He TH, Wang NP, Gao WM, Cheng YJ, Ji QF, Wu SH, Wei YL, Tang Y, Yang WZ, Zhang J. Thermoregulatory pathway underlying the pyrogenic effects of prostaglandin E 2 in the lateral parabrachial nucleus of male rats. Acta Pharmacol Sin 2024; 45:1832-1847. [PMID: 38702500 PMCID: PMC11336216 DOI: 10.1038/s41401-024-01289-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 04/10/2024] [Indexed: 05/06/2024] Open
Abstract
It has been shown that prostaglandin (PG) E2 synthesized in the lateral parabrachial nucleus (LPBN) is involved in lipopolysaccharide-induced fever. But the neural mechanisms of how intra-LPBN PGE2 induces fever remain unclear. In this study, we investigated whether the LPBN-preoptic area (POA) pathway, the thermoafferent pathway for feed-forward thermoregulatory responses, mediates fever induced by intra-LPBN PGE2 in male rats. The core temperature (Tcore) was monitored using a temperature radiotelemetry transponder implanted in rat abdomen. We showed that microinjection of PGE2 (0.28 nmol) into the LPBN significantly enhanced the density of c-Fos-positive neurons in the median preoptic area (MnPO). The chemical lesioning of MnPO with ibotenate or selective genetic lesioning or inhibition of the LPBN-MnPO pathway significantly attenuated fever induced by intra-LPBN injection of PGE2. We demonstrated that EP3 receptor was a pivotal receptor for PGE2-induced fever, since microinjection of EP3 receptor agonist sulprostone (0.2 nmol) or EP3 receptor antagonist L-798106 (2 nmol) into the LPBN mimicked or weakened the pyrogenic action of LPBN PGE2, respectively, but this was not the case for EP4 and EP1 receptors. Whole-cell recording from acute LPBN slices revealed that the majority of MnPO-projecting neurons originating from the external lateral (el) and dorsal (d) LPBN were excited and inhibited, respectively, by PGE2 perfusion, initiating heat-gain and heat-loss mechanisms. The amplitude but not the frequency of spontaneous and miniature glutamatergic excitatory postsynaptic currents (sEPSCs and mEPSCs) in MnPO-projecting LPBel neurons increased after perfusion with PGE2; whereas the frequency and amplitude of spontaneous inhibitory postsynaptic currents (sIPSCs) and the A-type potassium (IA) current density did not change. In MnPO-projecting LPBd neurons, neither sEPSCs nor sIPSCs responded to PGE2; however, the IA current density was significantly increased by PGE2 perfusion. These electrophysiological responses and the thermoeffector reactions to intra-LPBN PGE2 injection, including increased brown adipose tissue thermogenesis, shivering, and decreased heat dissipation, were all abolished by L-798106, and mimicked by sulprostone. These results suggest that the pyrogenic effects of intra-LPBN PGE2 are mediated by both the inhibition of the LPBd-POA pathway through the EP3 receptor-mediated activation of IA currents and the activation of the LPBel-POA pathway through the selective enhancement of glutamatergic synaptic transmission via EP3 receptors.
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Affiliation(s)
- Jian-Hui Xu
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Tian-Hui He
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Nan-Ping Wang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Wen-Min Gao
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Yong-Jing Cheng
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Qiao-Feng Ji
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Si-Hao Wu
- School of Clinical Medicine, Chengdu Medical College, Chengdu, 610500, China
| | - Yan-Lin Wei
- School of Clinical Medicine, Chengdu Medical College, Chengdu, 610500, China
| | - Yu Tang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China
| | - Wen Z Yang
- School of Life Science and Technology, Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai, 201210, China.
| | - Jie Zhang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, 610500, China.
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Liu W, Li J, Xu S, Wang Y, Li J, Wang S, Fu L, Jiang M, Bai G. Phillyrin and its metabolites exert antipyretic effects by targeting the NAD + binding domain of GAPDH, MDH2 and IDH2. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 134:155955. [PMID: 39191169 DOI: 10.1016/j.phymed.2024.155955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 07/27/2024] [Accepted: 08/13/2024] [Indexed: 08/29/2024]
Abstract
BACKGROUND Fever is one of the main pathophysiological reactions that occurs during the acute phase of various diseases. Excessive body temperature can lead to various adverse consequences such as brain tissue damage and abnormal immune responses. Phillyrin (Phr) is the main active ingredient in Forsythia suspensa (Thunb.) Vahl (Lian Qiao) and has antipyretic effects; however, its antipyretic mechanism of action remains unclear. PURPOSE This study aimed to explore the antipyretic mechanisms of Phr and provide a new treatment plan for fever. METHODS The antipyretic effects of Phr were evaluated using a mouse model of pneumonia fever. The main metabolites of Phr involved in its antipyretic function were identified using a mitochondrial temperature-sensitive probe. Further synthesis of the main metabolite, phillygenin (Phg), an alkynylated probe, was performed, and chemical proteomics was used to capture and analyze its direct target for antipyretic effects. The mechanism of action of Phg and its antipyretic targets was explored using metabolomics and various molecular biology methods. RESULTS Phr showed significant antipyretic and anti-inflammatory effects in a mouse model of lipopolysaccharide-induced fever. Phg reversibly targeted the nicotinamide adenine dinucleotide (NAD+) binding domain of glyceraldehyde-3-phosphate dehydrogenase (GAPDH), malate dehydrogenase 2 (MDH2), and isocitrate dehydrogenase 2 (IDH2) to inhibit their enzymatic activity. In-depth analysis of cellular metabolomics and mitochondrial stress testing indicated that inhibition of GAPDH, MDH2, and IDH2 enzyme activity by Phg led to a decrease in cellular energy supply and heat production regulated by glycolysis, tricarboxylic acid cycle, and oxidative phosphorylation signaling pathways. Phg specifically targeted macrophages and inhibited LPS-induced macrophage activation by downregulating GAPDH enzyme activity, thereby exerting anti-inflammatory effects. In vivo experiments also confirmed that the antipyretic effect of Phr in LPS-induced fever model mice was related to its main metabolites, Phg and Phg-sulfonate (Phg-S), which directly targeted the NAD+ binding domain of GAPDH, IDH2, and MDH2, inhibiting the activity of these enzymes, thereby reducing energy supply and regulating febrile-related inflammatory factors. CONCLUSION This study reported for the first time that the antipyretic effect of Phr is produced by targeting GAPDH, IDH2, and MDH2 to regulate energy supply and febrile-related inflammatory factors through its main metabolites Phg and Phg-S. This study not only provides potential drugs for fever treatment but also provides new ideas for improving clinical fever treatment plans.
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Affiliation(s)
- Wenjuan Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China
| | - Junjie Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China
| | - Sihan Xu
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China
| | - Yixu Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China
| | - Jiawei Li
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China
| | - Shou Wang
- Dalian Fusheng Natural Medicine Development Co. Ltd. Dalian, PR China
| | - Li Fu
- Dalian Fusheng Natural Medicine Development Co. Ltd. Dalian, PR China.
| | - Min Jiang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China.
| | - Gang Bai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, PR China.
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Su FZ, Bai CX, Zhang WS, Zhang YY, Liu M, Sun YP, Yang BY, Kuang HX, Wang QH. Polysaccharides from bile Arisaema exert an antipyretic effect on yeast-induced fever rats through regulating gut microbiota and metabolic profiling. Int J Biol Macromol 2024; 278:134823. [PMID: 39168226 DOI: 10.1016/j.ijbiomac.2024.134823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 08/11/2024] [Accepted: 08/15/2024] [Indexed: 08/23/2024]
Abstract
In our previous study, bile Arisaema was elucidated to have a significant anti-febrile effect, but the pharmacodynamic material basis of this effect remains uncertain. Herein, we found that the soluble polysaccharide fraction from bile Arisaema presents a remarkable antipyretic effect through balancing the gut microbiota and regulating metabolic profiling. Bile Arisaema polysaccharide (BAP) was characterized for its monosaccharide composition with arabinose, galactose, glucose, mannose and xylose (0.028:0.072:0.821:0.05:0.029, molar ratios) and amino acid composition with arginine, threonine, alanine, glycine, serine, proline and tyrosine (109.33, 135.78, 7.22, 8.86, 21.07, 4.96, 12.31 μg/mg). A total of 50 peptides were identified from BAP using Ltq-Orbitrap MS/MS. The oral administration of 100 mg/kg BAP significantly increased the antipyretic effect in yeast-induced fever rats by comparing the rectal temperature. Mechanistically, the inflammation and disorders of neurotransmitters caused by fever were improved by treatment with BAP. The western blotting results suggested that BAP could suppress fever-induced inflammation by down-regulating the NF-κB/TLR4/MyD88 signaling pathway. We also demonstrated that BAP affects lipid metabolism, amino acid metabolism and carbohydrate metabolism and balances the gut microbiota. In summary, the present study provides a crucial foundation for determining polysaccharide activity in bile Arisaema and further investigating the underlying mechanism of action.
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Affiliation(s)
- Fa-Zhi Su
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Chen-Xi Bai
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Wen-Sen Zhang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Yuan-Yuan Zhang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Meng Liu
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Yan-Ping Sun
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Bing-You Yang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China
| | - Hai-Xue Kuang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China.
| | - Qiu-Hong Wang
- Key Laboratory of Basic and Application Research of Beiyao (Heilongjiang University of Chinese Medicine), Ministry of Education, Harbin 150040, China; School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Li M, Barros-Pinkelnig M, Weiss G, Rensen PCN, Kooijman S. Brown adipose tissue facilitates the fever response following infection with Salmonella enterica serovar Typhimurium in mice. J Lipid Res 2024:100617. [PMID: 39128824 DOI: 10.1016/j.jlr.2024.100617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 08/05/2024] [Accepted: 08/06/2024] [Indexed: 08/13/2024] Open
Abstract
INTRODUCTION Brown adipose tissue (BAT) combusts lipids and glucose to generate heat. Via this process of non-shivering thermogenesis, BAT plays a pivotal role in thermoregulation in cold environments, but its contribution to immune-induced fever is less clear. METHODS Male APOE*3-Leiden.CETP mice, a well-established model for human-like lipoprotein metabolism, and wildtype mice were given an intraperitoneal injection of Salmonella enterica serovar Typhimurium (S.tm). Energy expenditure and substrate utilization, plasma lipid levels, fatty acid uptake by adipose tissues, and lipid content and thermogenic markers in adipose tissues were examined. RESULTS S.tm infection led to a set of characteristic symptoms, including elevated body temperature and decreased body weight. Whole-body energy expenditure was significantly decreased 72 hours post-infection, but fat oxidation was increased and accompanied by a substantial reduction in plasma triglyceride (TG) levels as demonstrated in APOE*3-Leiden.CETP mice. S.tm infection strongly increased uptake of fatty acids from TG-rich lipoproteins (TRLs) by BAT, which showed a positive correlation with body temperature in infected mice. Upon histological examination of BAT from wildtype or APOE*3-Leiden.CETP mice, elevated levels of tyrosine hydroxylase were observed, indicative of stimulated sympathetic activity. In addition, the gene expression profile was consistent with more adrenergic stimulation, while lipid content was reduced. Furthermore, browning of white adipose tissue was observed, evidenced by a modest increase in TG-derived fatty acid uptake, the presence of multilocular cells, and induction of UCP-1 expression. CONCLUSION We proposed that BAT, or thermogenic adipose tissue in general, is involved in the maintenance of elevated body temperature upon invasive bacterial infection.
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Affiliation(s)
- Mohan Li
- Deparment of Medicine, Division of Endocrinology, and Einthoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Marina Barros-Pinkelnig
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Günter Weiss
- Department of Internal Medicine II, Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Patrick C N Rensen
- Deparment of Medicine, Division of Endocrinology, and Einthoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands
| | - Sander Kooijman
- Deparment of Medicine, Division of Endocrinology, and Einthoven Laboratory of Experimental Vascular Medicine, Leiden University Medical Center, Leiden, The Netherlands.
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Che J, Sun Y, Deng Y, Zhang J. Blood-brain barrier disruption: a culprit of cognitive decline? Fluids Barriers CNS 2024; 21:63. [PMID: 39113115 PMCID: PMC11305076 DOI: 10.1186/s12987-024-00563-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2024] [Accepted: 07/31/2024] [Indexed: 08/10/2024] Open
Abstract
Cognitive decline covers a broad spectrum of disorders, not only resulting from brain diseases but also from systemic diseases, which seriously influence the quality of life and life expectancy of patients. As a highly selective anatomical and functional interface between the brain and systemic circulation, the blood-brain barrier (BBB) plays a pivotal role in maintaining brain homeostasis and normal function. The pathogenesis underlying cognitive decline may vary, nevertheless, accumulating evidences support the role of BBB disruption as the most prevalent contributing factor. This may mainly be attributed to inflammation, metabolic dysfunction, cell senescence, oxidative/nitrosative stress and excitotoxicity. However, direct evidence showing that BBB disruption causes cognitive decline is scarce, and interestingly, manipulation of the BBB opening alone may exert beneficial or detrimental neurological effects. A broad overview of the present literature shows a close relationship between BBB disruption and cognitive decline, the risk factors of BBB disruption, as well as the cellular and molecular mechanisms underlying BBB disruption. Additionally, we discussed the possible causes leading to cognitive decline by BBB disruption and potential therapeutic strategies to prevent BBB disruption or enhance BBB repair. This review aims to foster more investigations on early diagnosis, effective therapeutics, and rapid restoration against BBB disruption, which would yield better cognitive outcomes in patients with dysregulated BBB function, although their causative relationship has not yet been completely established.
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Affiliation(s)
- Ji Che
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, No.270 Dong'An Road, Xuhui District, Shanghai, 200032, P. R. China
| | - Yinying Sun
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, No.270 Dong'An Road, Xuhui District, Shanghai, 200032, P. R. China
| | - Yixu Deng
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, No.270 Dong'An Road, Xuhui District, Shanghai, 200032, P. R. China
| | - Jun Zhang
- Department of Anesthesiology, Fudan University Shanghai Cancer Center, No.270 Dong'An Road, Xuhui District, Shanghai, 200032, P. R. China.
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, 200032, P. R. China.
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Feitosa Ribeiro T, Carvalho de Souza NA, Cícero de Lima Araújo T, Ferreira Macedo CA, Souza Silva F, de Oliveira Siqueira A, Modesto Nascimento Menezes P, Gomes de Melo C, Rolim Neto PJ, Gonçalves de Oliveira Junior R, Douglas Melo Coutinho H, Raposo A, Araújo Rolim L. Antitussive, Expectorant and Antipyretic Effect of the Ethanolic Extract of the Leaves of Momordica charantia L. Chem Biodivers 2024; 21:e202400072. [PMID: 38780224 DOI: 10.1002/cbdv.202400072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 05/23/2024] [Accepted: 05/23/2024] [Indexed: 05/25/2024]
Abstract
The traditional use of the M. charantia L. plant to treat coughs, fever and expectoration is widely practiced in different cultures, but its effectiveness and safety still require scientific investigation. This study sought to perform a chemical analysis and evaluate the antitussive, expectorant and antipyretic effects of the ethanolic extract of M. charantia leaves (EEMc) in rats and mice. The EEMc was subjected to chemical analysis by HPLC-DAD, revealing the presence of the flavonoids astragalin and isoquercetin. Acute oral toxicity in mice did not result in deaths, although changes in liver weight and stool consistency were observed. EEMc demonstrated an antitussive effect at doses of 100 and 300 mg/kg in mice subjected to cough induction by citric acid nebulization. Furthermore, it showed expectorant activity at a dose of 300 mg/kg, assessed based on the elimination of the phenol red marker in bronchoalveolar lavage. In the evaluation of antipyretic activity in rats, fever induced by Saccharomyces cerevisiae was reduced at all doses tested during the first hour after treatment. This innovative study identified the presence of astragalin and isoquercetin in EEMc and indicated that the extract has antitussive, expectorant and antipyretic properties. Therefore, EEMc presents itself as a promising option in herbal medicine for the treatment of respiratory symptoms and fever.
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Affiliation(s)
- Tiago Feitosa Ribeiro
- Central for Analysis of Drugs, Medicines and Food (CAFMA), Federal University of Vale do São Francisco, Pernambuco, Brazil
- Northeast Network of Biotechnology (RENORBIO), Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil
| | - Nathália Andrezza Carvalho de Souza
- Central for Analysis of Drugs, Medicines and Food (CAFMA), Federal University of Vale do São Francisco, Pernambuco, Brazil
- Northeast Network of Biotechnology (RENORBIO), Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil
| | - Tarcísio Cícero de Lima Araújo
- Central for Analysis of Drugs, Medicines and Food (CAFMA), Federal University of Vale do São Francisco, Pernambuco, Brazil
- Northeast Network of Biotechnology (RENORBIO), Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil
| | | | - Fabrício Souza Silva
- Program of Graduate Studies in Biotechnology, State University of Feira de Santana (UEFS), Bahia, Brazil
- Federal University of Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brazil
| | | | | | | | | | | | | | - António Raposo
- CBIOS (Research Center for Biosciences and Health Technologies), Universidade Lusófona de Humanidades e Tecnologias, Campo Grande 376, 1749-024, Lisboa, Portugal
| | - Larissa Araújo Rolim
- Central for Analysis of Drugs, Medicines and Food (CAFMA), Federal University of Vale do São Francisco, Pernambuco, Brazil
- Northeast Network of Biotechnology (RENORBIO), Federal Rural University of Pernambuco (UFRPE), Recife, Pernambuco, Brazil
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Atosuo J, Karhuvaara O, Suominen E, Virtanen J, Vilén L, Nuutila J. The role of gamma globulin, complement component 1q, factor B, properdin, body temperature, C-reactive protein and serum amyloid alpha to the activity and the function of the human complement system and its pathways. J Immunol Methods 2024; 531:113709. [PMID: 38862098 DOI: 10.1016/j.jim.2024.113709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 05/20/2024] [Accepted: 06/08/2024] [Indexed: 06/13/2024]
Abstract
The complement system plays a crucial role in orchestrating the activation and regulation of inflammation within the human immune system. Three distinct activation pathways-classical, lectin, and alternative-converge to form the common lytic pathway, culminating in the formation of the membrane-attacking complex that disrupts the structure of pathogens. Dysregulated complement system activity can lead to tissue damage, autoimmune diseases, or immune deficiencies. In this study, the antimicrobial activity of human serum was investigated by using a bioluminescent microbe probe, Escherichia coli (pEGFPluxABCDEamp). This probe has previously been used to determine the antimicrobial activity of complement system and the polymorphonuclear neutrophils. In this study, blocking antibodies against key serum activators and components, including IgG, complement component 1q, factor B, and properdin, were utilized. The influence of body temperature and acute phase proteins, such as C reactive protein (CRP) and serum amyloid alpha (SAA), on the complement system was also examined. The study reveals the critical factors influencing complement system activity and pathway function. Alongside crucial factors like C1q and IgG, alternative pathway components factor B and properdin played pivotal roles. Results indicated that the alternative pathway accounted for approximately one third of the overall serum antimicrobial activity, and blocking this pathway disrupted the entire complement system. Contrary to expectations, elevated body temperature during inflammation did not enhance the antimicrobial activity of human serum. CRP demonstrated complement activation properties, but at higher physiological concentrations, it exhibited antagonistic tendencies, dampening the response. On the other hand, SAA enhanced the serum's activity. Overall, this study sheds a light on the critical factors affecting both complement system activity and pathway functionality, emphasizing the importance of a balanced immune response.
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Affiliation(s)
- Janne Atosuo
- Laboratory of Immunochemistry, Department of Life Technologies, Faculty of Technology, University of Turku, 20140, Finland.
| | - Outi Karhuvaara
- Laboratory of Immunochemistry, Department of Life Technologies, Faculty of Technology, University of Turku, 20140, Finland.
| | - Eetu Suominen
- Laboratory of Immunochemistry, Department of Life Technologies, Faculty of Technology, University of Turku, 20140, Finland.
| | - Julia Virtanen
- Laboratory of Immunochemistry, Department of Life Technologies, Faculty of Technology, University of Turku, 20140, Finland
| | - Liisa Vilén
- Department of Occupational Medicine, Clinical Department, Faculty of Medicine, 20140, University of Turku, Finland.
| | - Jari Nuutila
- Laboratory of Immunochemistry, Department of Life Technologies, Faculty of Technology, University of Turku, 20140, Finland.
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Alkandahri MY, Sadino A, Pamungkas BT, Oktoba Z, Arfania M, Yuniarsih N, Wahyuningsih ES, Putri DE. Pharmacological evaluation of anti-inflammatory, antipyretic, analgesic, and antioxidant activities of Castanopsis costata leaf fractions (water, ethyl acetate, and n-hexane fractions): the potential medicinal plants from North Sumatra, Indonesia. Res Pharm Sci 2024; 19:251-266. [PMID: 39035821 PMCID: PMC11257201 DOI: 10.4103/rps.rps_201_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 01/29/2024] [Accepted: 03/11/2024] [Indexed: 07/23/2024] Open
Abstract
Background and purpose Inflammation, fever, and pain can be associated with several diseases, and the synthetic drugs used in the treatment of these conditions often have severe side effects. As a result, there is a need for effective, economical, and safe alternative drugs, such as those derived from medicinal plants. Therefore, this study aimed to evaluate the anti-inflammatory, antipyretic, analgesic, and antioxidant activities of Castanopsis costata leaf fractions (CcLF), as well as its acute toxicity. Experimental approach For anti-inflammatory, antipyretic, and analgesic tests, rats were given CcLF (WFCC, EAFcC, and n-HFCC) at 50 and 100 mg/kg, diclofenac sodium (10 mg/kg), paracetamol (150 mg/kg), aspirin (100 mg/kg), and tramadol (20 mg/kg). For the antioxidant activity test, various concentrations of CcLF were used ranging from 25 to 200 μg/mL. This study also looked into whether there could be any acute toxicity and histopathology of the liver, stomach, and kidneys in experimental animals. Findings/Results The administration of CcLF significantly inhibited the increase in foot edema volume, and CcLF (EAFCC at 100 mg/kg) considerably decreased rectal temperature and was proportional to the standard drug paracetamol, and significantly inhibited pain sensation in various models. Additionally, CcLF showed strong antioxidant activity, and its administration at a dose limit of 5000 mg/kg/day did not show any toxic effects or death in test animals. Conclusions and implications The results of the current confirmed that CcLF has demonstrated anti-inflammatory, antipyretic, analgesic, and antioxidant properties in experimental models, and is practically non-toxic.
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Affiliation(s)
- Maulana Yusuf Alkandahri
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Buana Perjuangan Karawang, Karawang, West Java, Indonesia
| | - Asman Sadino
- Department of Pharmacy, Faculty of Mathematics and Natural Science, Universitas Garut, Garut, West Java, Indonesia
| | - Barolym Tri Pamungkas
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Mulawarman, Samarinda, East Kalimantan, Indonesia
| | - Zulpakor Oktoba
- Department of Pharmacy, Faculty of Medicine, Universitas Lampung, Bandar Lampung, Indonesia
| | - Maya Arfania
- Department of Pharmacology and Clinical Pharmacy, Faculty of Pharmacy, Universitas Buana Perjuangan Karawang, Karawang, West Java, Indonesia
| | - Nia Yuniarsih
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Universitas Buana Perjuangan Karawang, Karawang, West Java, Indonesia
| | - Eko Sri Wahyuningsih
- Department of Pharmaceutical Biology, Faculty of Pharmacy, Universitas Buana Perjuangan Karawang, Karawang, West Java, Indonesia
| | - Dea Eka Putri
- Student of Pharmacy, Faculty of Pharmacy, Universitas Buana Perjuangan Karawang, Karawang, West Java, Indonesia
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Hakke M, Bhagwat NM, Gada JV, Misra S. Elevated IL-6 levels in a patient with pheochromocytoma. BMJ Case Rep 2024; 17:e256410. [PMID: 38670572 PMCID: PMC11057251 DOI: 10.1136/bcr-2023-256410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024] Open
Abstract
Pheochromocytoma is a chromaffin cell-derived adrenal medullary tumour and usually presents with paroxysms of hypertension, palpitations, sweating and headache due to excessive catecholamine release. These tumours can also secrete a variety of bioactive neuropeptides and hormones other than catecholamines, resulting in unusual clinical manifestations. We report a female in her mid-30s who presented with fever, anaemia, thrombocytosis and markedly elevated inflammatory markers. The fever profile, including cultures, was negative. Contrast-enhanced CT of abdomen showed a large solid-cystic right adrenal lesion with elevated plasma-free normetanephrine levels suggestive of pheochromocytoma. The fever persisted despite empirical antibiotics and antipyretics. Interleukin-6 (IL-6) levels were elevated (41.2 pg/mL (3-4 pg/mL)). She was initiated on naproxen (NPX) at a dose of 250 mg two times per day. The patient responded to NPX, and after stabilisation, she underwent an adrenalectomy. There was a complete resolution of fever with normalisation of IL-6 levels postoperatively.
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Affiliation(s)
- Mahesh Hakke
- Department of Endocrinology, Topiwala National Medical College & BYL Nair Ch. Hospital, Mumbai, Maharashtra, India
| | - Nikhil M Bhagwat
- Department of Endocrinology, Topiwala National Medical College & BYL Nair Ch. Hospital, Mumbai, Maharashtra, India
| | - Jugal Velji Gada
- Department of Endocrinology, Topiwala National Medical College & BYL Nair Ch. Hospital, Mumbai, Maharashtra, India
| | - Sukirti Misra
- Department of Endocrinology, Topiwala National Medical College & BYL Nair Ch. Hospital, Mumbai, Maharashtra, India
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10
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Kinishi Y, Koyama Y, Yuba T, Fujino Y, Shimada S. Fever in childbirth: a mini-review of epidural-related maternal fever. Front Neurosci 2024; 18:1389132. [PMID: 38707593 PMCID: PMC11065963 DOI: 10.3389/fnins.2024.1389132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Accepted: 04/05/2024] [Indexed: 05/07/2024] Open
Abstract
Fever during childbirth, which is often observed in clinical settings, is characterized by a temperature of 38°C or higher, and can occur due to infectious and non-infectious causes. A significant proportion of non-infectious causes are associated with epidural-related maternal fever during vaginal delivery. Therapeutic interventions are required because fever has adverse effects on both mother and newborn. Effective treatment options for ERMF are lacking. As it is difficult to distinguish it from intrauterine infections such as chorioamnionitis, antibiotic administration remains the only viable option. We mentioned the importance of interleukin-1 receptor antagonist in the sterile inflammatory fever pathway and the hormonal influence on temperature regulation during childbirth, an important factor in elucidating the pathophysiology of ERMF. This review spotlighted the etiology and management of ERMF, underscoring recent advancements in our understanding of hypothalamic involvement in thermoregulation and its link to sterile inflammation. We propose to deepen the understanding of ERMF within the broader context of autonomic neuroscience, aiming to foster the development of targeted therapies.
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Affiliation(s)
- Yuki Kinishi
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yoshihisa Koyama
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
- Addiction Research Unit, Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Suita, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Japan
| | - Tomoo Yuba
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yuji Fujino
- Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Shoichi Shimada
- Department of Neuroscience and Cell Biology, Osaka University Graduate School of Medicine, Osaka, Japan
- Addiction Research Unit, Osaka Psychiatric Research Center, Osaka Psychiatric Medical Center, Osaka, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, Suita, Japan
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11
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Alemany M. The Metabolic Syndrome, a Human Disease. Int J Mol Sci 2024; 25:2251. [PMID: 38396928 PMCID: PMC10888680 DOI: 10.3390/ijms25042251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024] Open
Abstract
This review focuses on the question of metabolic syndrome (MS) being a complex, but essentially monophyletic, galaxy of associated diseases/disorders, or just a syndrome of related but rather independent pathologies. The human nature of MS (its exceptionality in Nature and its close interdependence with human action and evolution) is presented and discussed. The text also describes the close interdependence of its components, with special emphasis on the description of their interrelations (including their syndromic development and recruitment), as well as their consequences upon energy handling and partition. The main theories on MS's origin and development are presented in relation to hepatic steatosis, type 2 diabetes, and obesity, but encompass most of the MS components described so far. The differential effects of sex and its biological consequences are considered under the light of human social needs and evolution, which are also directly related to MS epidemiology, severity, and relations with senescence. The triggering and maintenance factors of MS are discussed, with especial emphasis on inflammation, a complex process affecting different levels of organization and which is a critical element for MS development. Inflammation is also related to the operation of connective tissue (including the adipose organ) and the widely studied and acknowledged influence of diet. The role of diet composition, including the transcendence of the anaplerotic maintenance of the Krebs cycle from dietary amino acid supply (and its timing), is developed in the context of testosterone and β-estradiol control of the insulin-glycaemia hepatic core system of carbohydrate-triacylglycerol energy handling. The high probability of MS acting as a unique complex biological control system (essentially monophyletic) is presented, together with additional perspectives/considerations on the treatment of this 'very' human disease.
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Affiliation(s)
- Marià Alemany
- Faculty of Biology, Universitat de Barcelona, 08028 Barcelona, Catalonia, Spain
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12
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Sukkasem K, Itharat A, Thisayakorn K, Tangsuphoom N, Panthong S, Makchuchit S, Inprasit J, Prommee N, Khoenok W, Sriyam K, Pahusee D, Tasanarong A, Ooraikul B, Davies NM. Exploring in vitro and in vivo anti-inflammatory activities of the Thai traditional remedy Kheaw-Hom and its bioactive compound, ethyl p-methoxycinnamate, and ethnopharmacological analysis. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117131. [PMID: 37689327 DOI: 10.1016/j.jep.2023.117131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/23/2023] [Accepted: 09/04/2023] [Indexed: 09/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Kheaw-Hom (KH) remedy, a Thai traditional medicine (TTM) on the National List of Essential Medicines, has long been clinically used to treat fever and inflammation in children. However, no in vitro or in vivo anti-inflammatory or bioactive compound studies are published in the literature. AIMS OF THE STUDY To explore the in vitro and in vivo anti-inflammatory activities of KH remedy and its bioactive compound and analyze relationships between flavor and ethnopharmacological activities of plant components in KH remedy according to TTM theory. MATERIALS AND METHODS Ethyl p-methoxycinnamate (EPMC), a bioactive compound of KH remedy was analyzed using high performance liquid chromatography (HPLC). In vitro anti-inflammatory activities of ethanolic extract (KHE), aqueous extract (KHA), acid-hydrolysis of KHA (KHA-h), acid-hydrolysis of KH powder (KHP-h), and EPMC were investigated using lipopolysaccharide (LPS)-induced nitric oxide (NO), prostaglandin E2 (PGE2), and tumor necrosis factor-alpha (TNF-α) production in murine macrophage RAW 264.7 cells. In vivo anti-inflammatory activities of KH powder (KHP) and KHE were determined using carrageenan-induced paw edema and ethyl phenylpropiolate (EPP)-induced ear edema in rats and PGE2 production in tissue samples was examined. RESULTS KHP-h showed the highest EPMC content (21.33 ± 1.08 mg/g of extract) and inhibited PGE2, NO, and TNF-α production with IC50 values of 11.92 ± 0.21, 30.61 ± 3.12, and 56.71 ± 2.91 μg/mL, respectively, followed by KHE and KHA-h while KHA did not. EPMC, a bioactive compound of KH remedy showed high anti-inflammatory activities through three pathways. KHP oral administration (100 mg/kg) significantly minimized rat paw inflammation at 1, 2, and 3 h while KHE (100 mg/kg) noticeably reduced at 2 and 3 h. KHP (100, 200, and 400 mg/kg) and KHE (100 mg/kg) significantly inhibited PGE2 production. KHP (1% w/v) notably reduced rat ear edema at 30, 60, and 120 min whereas KHE at all concentrations decreased swelling at 120 min. KHP and KHE at all doses significantly inhibited PGE2 production. Cool flavor was the main KH remedy flavor. Spicy plant components and some fragrant components showed high anti-inflammatory activity. CONCLUSIONS Results from the in vivo study strongly paralleled the in vitro study. These findings support the rational use of KH remedy according to TTM theory for fever treatment and inflammation in children.
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Affiliation(s)
- Kanmanee Sukkasem
- Student of Doctor of Philosophy (Applied Thai Traditional Medicine), Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Arunporn Itharat
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand; Center of Excellence in Applied Thai Traditional Medicine Research (CEATMR), Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Krittiya Thisayakorn
- Expert Center of Innovative Herbal Products (InnoHerb), Thailand Institute of Scientific and Technological Research (TISTR), Technopolis, Khlong Luang, Pathum Thani, 12120, Thailand.
| | | | - Sumalee Panthong
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand; Center of Excellence in Applied Thai Traditional Medicine Research (CEATMR), Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Sunita Makchuchit
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand; Center of Excellence in Applied Thai Traditional Medicine Research (CEATMR), Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Janjira Inprasit
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Nuntika Prommee
- Department of Applied Thai Traditional Medicine, Faculty of Medicine, Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Wicheian Khoenok
- Expert Center of Innovative Herbal Products (InnoHerb), Thailand Institute of Scientific and Technological Research (TISTR), Technopolis, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Kanjana Sriyam
- Expert Center of Innovative Herbal Products (InnoHerb), Thailand Institute of Scientific and Technological Research (TISTR), Technopolis, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Darunee Pahusee
- Expert Center of Innovative Herbal Products (InnoHerb), Thailand Institute of Scientific and Technological Research (TISTR), Technopolis, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Adis Tasanarong
- Chulabhorn International College of Medicine, Thammasat University, Klong Luang, Pathum Thani, 12120, Thailand.
| | - Buncha Ooraikul
- Department of Agricultural Food and Nutritional Science, Faculty of Agricultural Life and Environmental Sciences, University of Alberta, Edmonton, Alberta, T6G2E1, Canada; Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand.
| | - Neal M Davies
- Thammasat University, Khlong Luang, Pathum Thani, 12120, Thailand; Faculty of Pharmacy and Pharmaceutical Sciences, Katz Centre for Pharmacy and Health Research, University of Alberta, Edmonton, Alberta, T6G2E1, Canada.
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13
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Kumar V, Stewart JH. Immune Homeostasis: A Novel Example of Teamwork. Methods Mol Biol 2024; 2782:1-24. [PMID: 38622389 DOI: 10.1007/978-1-0716-3754-8_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
All living organisms must maintain homeostasis to survive, reproduce, and pass their traits on to the next generation. If homeostasis is not maintained, it can result in various diseases and ultimately lead to death. Physiologists have coined the term "homeostasis" to describe this process. With the emergence of immunology as a separate branch of medicine, the concept of immune homeostasis has been introduced. Maintaining immune homeostasis is crucial to support overall homeostasis through different immunological and non-immunological routes. Any changes in the immune system can lead to chronic inflammatory or autoimmune diseases, immunodeficiency diseases, frequent infections, and cancers. Ongoing scientific advances are exploring new avenues in immunology and immune homeostasis maintenance. This chapter introduces the concept of immune homeostasis and its maintenance through different mechanisms.
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Affiliation(s)
- Vijay Kumar
- Department of Surgery, Laboratory of Tumor Immunology and Immunotherapy, Medical Education Building-C, Morehouse School of Medicine, Atlanta, GA, USA
| | - John H Stewart
- Department of Surgery, Laboratory of Tumor Immunology and Immunotherapy, Medical Education Building-C, Morehouse School of Medicine, Atlanta, GA, USA.
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14
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Lv X, Gao K, Nie J, Zhang X, Zhang S, Ren Y, Sun X, Li Q, Huang J, Liu L, Zhang X, Zhang W, Liu X. Structures of human prostaglandin F 2α receptor reveal the mechanism of ligand and G protein selectivity. Nat Commun 2023; 14:8136. [PMID: 38065938 PMCID: PMC10709307 DOI: 10.1038/s41467-023-43922-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 11/23/2023] [Indexed: 12/18/2023] Open
Abstract
Prostaglandins and their receptors regulate various physiological processes. Carboprost, an analog of prostaglandin F2α and an agonist for the prostaglandin F2-alpha receptor (FP receptor), is clinically used to treat postpartum hemorrhage (PPH). However, off-target activation of closely related receptors such as the prostaglandin E receptor subtype EP3 (EP3 receptor) by carboprost results in side effects and limits the clinical application. Meanwhile, the FP receptor selective agonist latanoprost is not suitable to treat PPH due to its poor solubility and fast clearance. Here, we present two cryo-EM structures of the FP receptor bound to carboprost and latanoprost-FA (the free acid form of latanoprost) at 2.7 Å and 3.2 Å resolution, respectively. The structures reveal the molecular mechanism of FP receptor selectivity for both endogenous prostaglandins and clinical drugs, as well as the molecular mechanism of G protein coupling preference by the prostaglandin receptors. The structural information may guide the development of better prostaglandin drugs.
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Affiliation(s)
- Xiuqing Lv
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Kaixuan Gao
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China
| | - Jia Nie
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Xin Zhang
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China
| | - Shuhao Zhang
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China
| | - Yinhang Ren
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China
| | - Xiaoou Sun
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China
- School of Medicine, Tsinghua University, Beijing, China
| | - Qi Li
- Reproductive Medicine Center, Xiangya Hospital Central South University, Changsha, China
| | - Jingrui Huang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Lijuan Liu
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Xiaowen Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China
| | - Weishe Zhang
- Department of Obstetrics, Xiangya Hospital Central South University, Changsha, China.
- Hunan Engineering Research Center of Early Life Development and Disease Prevention, Changsha, China.
| | - Xiangyu Liu
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Pharmaceutical Sciences, Tsinghua University, Beijing, China.
- Beijing Frontier Research Center for Biological Structure, Beijing Advanced Innovation Center for Structural Biology, Tsinghua University, Beijing, China.
- Beijing Key Laboratory of Cardiovascular Receptors Research, Peking University, Beijing, China.
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15
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Zhang H, Ge S, Diao F, Song W, Zhang Y, Zhuang P, Zhang Y. Network pharmacology integrated with experimental verification reveals the antipyretic characteristics and mechanism of Zi Xue powder. PHARMACEUTICAL BIOLOGY 2023; 61:1512-1524. [PMID: 38069658 PMCID: PMC11001279 DOI: 10.1080/13880209.2023.2287658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 11/20/2023] [Indexed: 12/18/2023]
Abstract
CONTEXT Zi Xue Powder (ZXP) is a traditional formula for the treatment of fever. However, the potential mechanism of action of ZXP remains unknown. OBJECTIVE This study elucidates the antipyretic characteristics of ZXP and the mechanism by which ZXP alleviates fever. MATERIALS AND METHODS The key targets and underlying fever-reducing mechanisms of ZXP were predicted using network pharmacology and molecular docking. The targets of ZXP anti-fever active ingredient were obtained by searching TCMSP, STITCH and HERB. Moreover, male Sprague-Dawley rats were randomly divided into four groups: control, lipopolysaccharide (LPS), ZXP (0.54, 1.08, 2.16 g/kg), and positive control (acetaminophen, 0.045 g/kg); the fever model was established by intraperitoneal LPS injection. After the fever model was established at 0.5 h, the rats were administered treatment by gavage, and the anal temperature changes of each group were observed over 10 h after treatment. After 10 h, ELISA and Western blot analysis were used to further investigate the mechanism of ZXP. RESULTS Network pharmacology analysis showed that MAPK was a crucial pathway through which ZXP suppresses fever. The results showed that ZXP (2.16 g/kg) decreased PGE2, CRH, TNF-a, IL-6, and IL-1β levels while increasing AVP level compared to the LPS group. Furthermore, the intervention of ZXP inhibited the activation of MAPK pathway in LPS-induced fever rats. CONCLUSIONS This study provides new insights into the mechanism by which ZXP reduces fever and provides important information and new research ideas for the discovery of antipyretic compounds from traditional Chinese medicine.
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Affiliation(s)
- Hanyu Zhang
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shining Ge
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Fengyin Diao
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Wen Song
- Tianjin Hongrentang Pharmaceutical Co., Ltd, Tianjin, China
| | - Ying Zhang
- Tianjin Hongrentang Pharmaceutical Co., Ltd, Tianjin, China
| | - Pengwei Zhuang
- College of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
| | - Yanjun Zhang
- State Key Laboratory of Component-based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Haihe Laboratory of Modern Chinese Medicine, Tianjin, China
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
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16
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Wang H, Zheng X, Lin Y, Zheng X, Yan M, Li Y, Shi D, Guo S, Liu C. The mixture of Radix isatidis, Forsythiae, and Gypsum alleviates lipopolysaccharide-induced fever in broilers by inhibition of TLR4/NF-κB signaling pathway. Poult Sci 2023; 102:103032. [PMID: 37769495 PMCID: PMC10542642 DOI: 10.1016/j.psj.2023.103032] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 10/03/2023] Open
Abstract
To determine whether the antipyretic effect of the mixture of Radix isatidis, Forsythiae, and Gypsum (RIFG) on lipopolysaccharide (LPS) induced fever broilers and its related mechanisms. A total of 315 24-day-old yellow-plumed broilers were randomly divided into 7 groups, except for the control group, other groups were injected with LPS. Two hours later, RIFG were given drinking water to relieve fever, and it was evaluated by the expression of genes and proteins of the maximum body temperature rise (∆T), body temperature response index (TRI), serum and hypothalamic pyrogenic heat factor. RIFG could reduce the body temperature of broilers with fever (P < 0.01). It inhibited the expressions of IL-6 and PGE2 (P < 0.01), down-regulated mRNA expression levels of TNF-ɑ and COX-2 (P < 0.01), and promoted the generation of antipyretic factor AVP mRNA (P < 0.01). In addition, the expression level of TLR4 and NF-κB p65 protein can be down-regulated, and LPS + RM group has the best down-regulated effect. RIFG had a good antipyretic effect on reducing LPS-induced fever of broilers by inhibiting the activation of TLR4/NF-κB signaling pathway and thermogenic factors.
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Affiliation(s)
- Huiting Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaoman Zheng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yongshi Lin
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xirui Zheng
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Mingen Yan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Yaoxing Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Dayou Shi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Nature Medicine, Guangzhou, 510642, China; International Institute of Traditional Chinese Veterinary Medicine, Guangzhou, 510642, China
| | - Shining Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China; Guangdong Technology Research Center for Traditional Chinese Veterinary Medicine and Nature Medicine, Guangzhou, 510642, China; International Institute of Traditional Chinese Veterinary Medicine, Guangzhou, 510642, China
| | - Cui Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China.
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17
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Campanaro CK, Nethery DE, Guo F, Kaffashi F, Loparo KA, Jacono FJ, Dick TE, Hsieh YH. Dynamics of ventilatory pattern variability and Cardioventilatory Coupling during systemic inflammation in rats. FRONTIERS IN NETWORK PHYSIOLOGY 2023; 3:1038531. [PMID: 37583625 PMCID: PMC10423997 DOI: 10.3389/fnetp.2023.1038531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 06/20/2023] [Indexed: 08/17/2023]
Abstract
Introduction: Biometrics of common physiologic signals can reflect health status. We have developed analytics to measure the predictability of ventilatory pattern variability (VPV, Nonlinear Complexity Index (NLCI) that quantifies the predictability of a continuous waveform associated with inhalation and exhalation) and the cardioventilatory coupling (CVC, the tendency of the last heartbeat in expiration to occur at preferred latency before the next inspiration). We hypothesized that measures of VPV and CVC are sensitive to the development of endotoxemia, which evoke neuroinflammation. Methods: We implanted Sprague Dawley male rats with BP transducers to monitor arterial blood pressure (BP) and recorded ventilatory waveforms and BP simultaneously using whole-body plethysmography in conjunction with BP transducer receivers. After baseline (BSLN) recordings, we injected lipopolysaccharide (LPS, n = 8) or phosphate buffered saline (PBS, n =3) intraperitoneally on 3 consecutive days. We recorded for 4-6 h after the injection, chose 3 epochs from each hour and analyzed VPV and CVC as well as heart rate variability (HRV). Results: First, the responses to sepsis varied across rats, but within rats the repeated measures of NLCI, CVC, as well as respiratory frequency (fR), HR, BP and HRV had a low coefficient of variation, (<0.2) at each time point. Second, HR, fR, and NLCI increased from BSLN on Days 1-3; whereas CVC decreased on Days 2 and 3. In contrast, changes in BP and the relative low-(LF) and high-frequency (HF) of HRV were not significant. The coefficient of variation decreased from BSLN to Day 3, except for CVC. Interestingly, NLCI increased before fR in LPS-treated rats. Finally, we histologically confirmed lung injury, systemic inflammation via ELISA and the presence of the proinflammatory cytokine, IL-1β, with immunohistochemistry in the ponto-medullary respiratory nuclei. Discussion: Our findings support that NLCI reflects changes in the rat's health induced by systemic injection of LPS and reflected in increases in HR and fR. CVC decreased over the course to the experiment. We conclude that NLCI reflected the increase in predictability of the ventilatory waveform and (together with our previous work) may reflect action of inflammatory cytokines on the network generating respiration.
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Affiliation(s)
- Cara K. Campanaro
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - David E. Nethery
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
| | - Fei Guo
- Institute for Smart, Secure and Connected Systems (ISSACS), Case Western Reserve University, Cleveland, OH, United States
| | - Farhad Kaffashi
- Institute for Smart, Secure and Connected Systems (ISSACS), Case Western Reserve University, Cleveland, OH, United States
| | - Kenneth A. Loparo
- Institute for Smart, Secure and Connected Systems (ISSACS), Case Western Reserve University, Cleveland, OH, United States
| | - Frank J. Jacono
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Louis Stokes Cleveland VA Medical Center, Cleveland, OH, United States
| | - Thomas E. Dick
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
- Department of Neurosciences, Case Western Reserve University, Cleveland, OH, United States
| | - Yee-Hsee Hsieh
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, Case Western Reserve University, Cleveland, OH, United States
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Kasten E, Eilers JJ. How the Mind Creates the Body and What Can Go Wrong: Case Studies of Misperceptions of the Body. Healthcare (Basel) 2023; 11:2144. [PMID: 37570384 PMCID: PMC10418408 DOI: 10.3390/healthcare11152144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/04/2023] [Accepted: 07/16/2023] [Indexed: 08/13/2023] Open
Abstract
The review brings together a wealth of case studies, both from the authors' patients and from the literature, about people whose bodies do not feel as they really should. Body parts suddenly become longer or shorter, heavier or lighter and there may be a loss of body control to the point where individuals feel as if they no longer have a body at all. The article differentiates by type of causes: mental disorders (e.g., psychosis), the influence of drugs on body perception and neurological causes. Depending on the type of body change, examples are given from the categories of sexually toned changes in body perception, out-of-body experiences and near-death experiences. Since there are countless types of body image disorders, the article is limited to a selective selection of the most interesting and sometimes obscure deviations.
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Affiliation(s)
- Erich Kasten
- Department of Psychology, Faculty of Human Sciences, Medical School Hamburg, 20457 Hamburg, Germany;
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19
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Liu T, Chen H, Shi Y, Xu W, Yuan F. Fever in the initial stage of IIM patients: an early clinical warning sign for AE-ILD. Adv Rheumatol 2023; 63:31. [PMID: 37443073 DOI: 10.1186/s42358-023-00313-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND Fever is a common symptom of Idiopathic inflammatory myopathies (IIM). However, the exact correlation between fever and the prognosis of IIM is still unclear. This study aims to clarify if the IIM patients initiated with fever are associated with poorer outcomes. METHODS This was a single-center retrospective cohort study. Data were collected from 79 newly diagnosed, treatment-naive IIM patients in the Affiliated Wuxi People's Hospital of Nanjing Medical University (Wuxi, Jiangsu, China) from November 2016 to June 2020. According to the presence or absence of fever at the onset, the IIM patients were divided into two groups(fever group n = 28, without fever group n = 51) Clinical characteristics, laboratory data, treatment, and outcomes were recorded. The Kaplan-Meier and log-rank tests were used to compare the all-cause mortality, relapse rate, and acute exacerbation of interstitial lung disease (AE-ILD) incidence. The association of fever with the outcomes was assessed in the unadjusted and adjusted forward logistic regression model. RESULTS Compared with the non-fever group, the age at onset of the fever group was higher, and mechanic's hands (MH) and interstitial lung disease (ILD) were more common. Systemic inflammation (CRP and ESR) was significantly higher in the fever group, while the level of albumin(ALB) and muscle enzymes were lower. The fever group seemed to be received more aggressive treatment, with higher dose glucocorticoids and higher rates of intravenous immunoglobulins(IVIG) use. The all-cause mortality rate and the incidence rate of AE-ILD were higher in the fever group. Even adjusted for the age at onset and treatments, fever was significantly associated with AE-ILD and all-cause mortality. CONCLUSION Our study has demonstrated that fever at initial diagnosis is associated with AE-ILD and mortality. Fever should serve as an early clinical warning sign for poor outcomes in IIM patients.
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Affiliation(s)
- Ting Liu
- Department of Rheumatology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, 214023, Jiangsu, China
| | - Haifeng Chen
- Department of Rheumatology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, 214023, Jiangsu, China
| | - Yitian Shi
- Department of Rheumatology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, 214023, Jiangsu, China
| | - Wei Xu
- Department of Rheumatology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, 214023, Jiangsu, China
| | - Fenghong Yuan
- Department of Rheumatology, The Affiliated Wuxi People's Hospital of Nanjing Medical University, Wuxi People's Hospital, Wuxi Medical Center, Nanjing Medical University, Wuxi, 214023, Jiangsu, China.
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20
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Eren F, Schwieler L, Orhan F, Malmqvist A, Piehl F, Cervenka S, Sellgren CM, Fatouros-Bergman H, Engberg G, Erhardt S. Immunological protein profiling of first-episode psychosis patients identifies CSF and blood biomarkers correlating with disease severity. Brain Behav Immun 2023; 111:376-385. [PMID: 37146654 DOI: 10.1016/j.bbi.2023.04.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 04/21/2023] [Accepted: 04/30/2023] [Indexed: 05/07/2023] Open
Abstract
BACKGROUND AND HYPOTHESIS Immune activation is suggested to play an important role in psychosis. In this study, a large number of immune-related proteins were analyzed to obtain a more comprehensive picture of immune aberrations in schizophrenia. STUDY DESIGN Ninety-two immune markers were analyzed by the Olink Protein Extension Assay (Inflammatory Panel) in plasma and cerebrospinal fluid (CSF) from 77 first-episode psychosis (FEP) patients (of which 43 later received the diagnosis of schizophrenia) and 56 healthy controls, all recruited from the Karolinska Schizophrenia Project (KaSP), Stockholm, Sweden. STUDY RESULTS Differential analysis showed that 12 of 92 inflammatory proteins were significantly higher in the plasma of FEP patients (n = 77) than in controls, and several proteins were positively correlated with disease severity. Patients from the same cohort diagnosed with schizophrenia (n = 43), showed significantly higher levels of 15 plasma proteins compared to controls whereas those not receiving this diagnosis showed no significant differences. The presently used OLINK inflammatory panel allowed the detection of only 47 CSF proteins of which only CD5 differed between patients and controls. CONCLUSIONS The levels of several peripheral immune markers, particularly those interfering with WNT/β-catenin signaling, were significantly higher in patients with FEP than in healthy controls and associated with illness severity.
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Affiliation(s)
- Feride Eren
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Lilly Schwieler
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Funda Orhan
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Anna Malmqvist
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
| | - Fredrik Piehl
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Neuroimmunology Unit, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Simon Cervenka
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden; Department of Medical Sciences, Psychiatry, Uppsala University, Uppsala, Sweden
| | - Carl M Sellgren
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Helena Fatouros-Bergman
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden; Centre for Psychiatry Research, Department of Clinical Neuroscience, Karolinska Institutet and Stockholm Health Care Services, Stockholm County Council, Stockholm, Sweden
| | - Göran Engberg
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden.
| | - Sophie Erhardt
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden
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21
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Kang Y, Gao Y, Li X, Guo X, Liu Z, Li W, Wei J, Qi Y. Bupleurum chinense exerts a mild antipyretic effect on LPS-induced pyrexia rats involving inhibition of peripheral TNF-α production. JOURNAL OF ETHNOPHARMACOLOGY 2023; 310:116375. [PMID: 36934787 DOI: 10.1016/j.jep.2023.116375] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 03/02/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Bupleuri Radix, the dried roots of Bupleurum chinense DC. (BC) or Bupleurum scorzonerifolium Willd., is one of the most frequently used traditional Chinese medicines. As the species in Xiao-Chai-Hu decoction, BC has been used as an antipyretic medicine with a long history. However, its antipyretic characteristics and underlying mechanism(s) remain unclear. AIM OF THE STUDY To elucidate the antipyretic characteristics and mechanism(s) of BC used in its traditional way. METHODS The water extract of BC (BCE) was prepared according to the traditional decocting mode. Murine fever and endotoxemia models were induced by intravenous injection of lipopolysaccharide (LPS). In vitro complement activation assay and the levels of TNF-α, IL-6, IL-1β, and C5a were determined by ELISA. RESULTS BCE exerted a confirmed but mild antipyretic effect on LPS-induced fever of rat. In vitro, it significantly lowered LPS-elevated TNF-α in the supernatant of rat complete blood cells and THP-1 cells, but failed to decrease IL-6 and IL-1β. In murine endotoxemia models, BCE markedly decreased serum TNF-α, but had no impact on IL-6 and IL-1β. BCE also restricted complement activation in vitro and in vivo. Nevertheless, the mixture of saikosaponin A and D could not suppress supernatant TNF-α of monocytes and serum TNF-α of endotoxemia mice. CONCLUSIONS The present study dissects the peripheral mechanism for the antipyretic effect of BC used in the traditional way. Our findings indicate that BCE directly suppresses monocyte-produced TNF-α, thus decreasing circulating TNF-α, which may be responsible for its mild but confirmed antipyretic action.
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Affiliation(s)
- Yuan Kang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Yuan Gao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Ximeng Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Xinwei Guo
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Zhuangzhuang Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Wenjing Li
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Jianhe Wei
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Yun Qi
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
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22
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Qin Y, Zhang B, Zhao S, Wang W, Dong S, Miao Y, Zhao S, Liu L, Wu Z, Kang J, Liu A. Association between higher systemic immune inflammation index (SII) and deep vein thrombosis (DVT) in patients with aneurysmal subarachnoid hemorrhage (aSAH) after endovascular treatment. Neurosurg Rev 2023; 46:142. [PMID: 37338601 DOI: 10.1007/s10143-023-02048-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 05/21/2023] [Accepted: 06/10/2023] [Indexed: 06/21/2023]
Abstract
Inflammation contributes to deep vein thrombosis (DVT) formation in patients with aSAH after endovascular treatment. The relationship between systemic immune-inflammatory index (SII) as an inflammatory marker and DVT formation remains unclear. Thus, this study aims to evaluate the association between SII and aSAH-associated DVT following endovascular treatment. We enrolled 562 consecutive patients with aSAH after endovascular treatment at three centers from January 2019 to September 2021. The endovascular treatments included simple coil embolization and stent-assisted coil embolization. Deep venous thrombosis (DVT) was assessed by Color Doppler ultrasonography (CDUS). Multivariate logistic regression analysis was used to establish the model. We assessed the association of the SII, neutrophil-to-lymphocyte ratio (NLR), the systemic inflammatory response index (SIRI), platelet-lymphocyte ratio (PLR), and DVT by using restricted cubic spline (RCS). ASAH-associated DVT was found in 136 (24.20%) patients. Based on the multiple logistic regression analysis, the correlation was found between aSAH-associated DVT and elevated SII (fourth quartile) (adjusted odds ratio = 8.20 [95% confidence interval, 3.76-17.92]; p < 0.001 [p for trend < 0.001]), elevated NLR (fourth quartile) (adjusted odds ratio = 6.94 [95% confidence interval, 3.24-14.89]; p < 0.001 [p for trend < 0.001]), elevated SIRI (fourth quartile) (adjusted odds ratio = 4.82 [95% confidence interval, 2.36-9.84]; p < 0.001 [p for trend < 0.001]), and elevated PLR (fourth quartile) (adjusted odds ratio = 5.49 [95% confidence interval, 2.61-11.57]; p < 0.001 [p for trend < 0.001]). The increased SII was correlated with the formation of aSAH-associated DVT after endovascular treatment.
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Affiliation(s)
- Yongkai Qin
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Baorui Zhang
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Shangfeng Zhao
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Wei Wang
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China
| | - Siyuan Dong
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Yan Miao
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Songfeng Zhao
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Lang Liu
- Department of Neurosurgery, The Third Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Zhongxue Wu
- Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China
| | - Jun Kang
- Department of Neurosurgery, Beijing Tongren Hospital, Capital Medical University, Beijing, 100730, China.
| | - Aihua Liu
- Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, 100070, China.
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Garofalo S, Cocozza G, Mormino A, Bernardini G, Russo E, Ielpo D, Andolina D, Ventura R, Martinello K, Renzi M, Fucile S, Laffranchi M, Mortari EP, Carsetti R, Sciumè G, Sozzani S, Santoni A, Tremblay ME, Ransohoff RM, Limatola C. Natural killer cells and innate lymphoid cells 1 tune anxiety-like behavior and memory in mice via interferon-γ and acetylcholine. Nat Commun 2023; 14:3103. [PMID: 37248289 DOI: 10.1038/s41467-023-38899-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 05/18/2023] [Indexed: 05/31/2023] Open
Abstract
The mechanisms of communication between the brain and the immune cells are still largely unclear. Here, we characterize the populations of resident natural killer (NK) cells and innate lymphoid cells (ILC) 1 in the meningeal dura layer of adult mice. We describe that ILC1/NK cell-derived interferon-γ and acetylcholine can contribute to the modulation of brain homeostatic functions, shaping synaptic neuronal transmission and neurotransmitter levels with effects on mice behavior. In detail, the interferon-γ plays a role in the formation of non-spatial memory, tuning the frequency of GABAergic neurotransmission on cortical pyramidal neurons, while the acetylcholine is a mediator involved in the modulation of brain circuitries that regulate anxiety-like behavior. These findings disclose mechanisms of immune-to-brain communication that modulate brain functions under physiological conditions.
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Affiliation(s)
- Stefano Garofalo
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy.
| | - Germana Cocozza
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
- IRCCS Neuromed, Pozzilli, Italy
| | - Alessandro Mormino
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
| | | | - Eleonora Russo
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Donald Ielpo
- Department of Psychology and Centre for Research in Neurobiology D. Bovet, Sapienza University of Rome, Rome, Italy
| | - Diego Andolina
- Department of Psychology and Centre for Research in Neurobiology D. Bovet, Sapienza University of Rome, Rome, Italy
| | - Rossella Ventura
- Department of Psychology and Centre for Research in Neurobiology D. Bovet, Sapienza University of Rome, Rome, Italy
| | | | - Massimiliano Renzi
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
| | - Sergio Fucile
- Department of Physiology and Pharmacology, Sapienza University of Rome, Rome, Italy
- IRCCS Neuromed, Pozzilli, Italy
| | - Mattia Laffranchi
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Eva Piano Mortari
- B Cell Unit, Immunology Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Rita Carsetti
- B Cell Unit, Immunology Research Area, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Giuseppe Sciumè
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Silvano Sozzani
- IRCCS Neuromed, Pozzilli, Italy
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Angela Santoni
- IRCCS Neuromed, Pozzilli, Italy
- Department of Molecular Medicine, Sapienza University of Rome, Rome, Italy
| | - Marie-Eve Tremblay
- Centre de Recherche CHU de Quebec-Université Laval, Quebec City, QC, Canada
| | | | - Cristina Limatola
- IRCCS Neuromed, Pozzilli, Italy.
- Department of Physiology and Pharmacology, Sapienza University, Laboratory affiliated to Istituto Pasteur, Rome, Italy.
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Lauritano D, Mastrangelo F, D’Ovidio C, Ronconi G, Caraffa A, Gallenga CE, Frydas I, Kritas SK, Trimarchi M, Carinci F, Conti P. Activation of Mast Cells by Neuropeptides: The Role of Pro-Inflammatory and Anti-Inflammatory Cytokines. Int J Mol Sci 2023; 24:ijms24054811. [PMID: 36902240 PMCID: PMC10002992 DOI: 10.3390/ijms24054811] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Mast cells (MCs) are tissue cells that are derived from bone marrow stem cells that contribute to allergic reactions, inflammatory diseases, innate and adaptive immunity, autoimmunity, and mental disorders. MCs located near the meninges communicate with microglia through the production of mediators such as histamine and tryptase, but also through the secretion of IL-1, IL-6 and TNF, which can create pathological effects in the brain. Preformed chemical mediators of inflammation and tumor necrosis factor (TNF) are rapidly released from the granules of MCs, the only immune cells capable of storing the cytokine TNF, although it can also be produced later through mRNA. The role of MCs in nervous system diseases has been extensively studied and reported in the scientific literature; it is of great clinical interest. However, many of the published articles concern studies on animals (mainly rats or mice) and not on humans. MCs are known to interact with neuropeptides that mediate endothelial cell activation, resulting in central nervous system (CNS) inflammatory disorders. In the brain, MCs interact with neurons causing neuronal excitation with the production of neuropeptides and the release of inflammatory mediators such as cytokines and chemokines. This article explores the current understanding of MC activation by neuropeptide substance P (SP), corticotropin-releasing hormone (CRH), and neurotensin, and the role of pro-inflammatory cytokines, suggesting a therapeutic effect of the anti-inflammatory cytokines IL-37 and IL-38.
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Affiliation(s)
- Dorina Lauritano
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Filiberto Mastrangelo
- Department of Clinical and Experimental Medicine, School of Dentistry, University of Foggia, 71100 Foggia, Italy
| | - Cristian D’Ovidio
- Section of Legal Medicine, Department of Medicine and Aging Sciences, G. d’Annunzio University of Chieti-Pescara, 66100 Chieti, Italy
| | - Gianpaolo Ronconi
- Clinica dei Pazienti del Territorio, Fondazione Policlinico Gemelli, 00185 Rome, Italy
| | | | - Carla E. Gallenga
- Section of Ophthalmology, Department of Biomedical Sciences and Specialist Surgery, University of Ferrara, 44121 Ferrara, Italy
| | - Ilias Frydas
- Department of Parasitology, Aristotle University, 54124 Thessaloniki, Greece
| | - Spyros K. Kritas
- Department of Microbiology and Infectious Diseases, School of Veterinary Medicine, Aristotle University of Thessaloniki, 54124 Macedonia, Greece
| | - Matteo Trimarchi
- Centre of Neuroscience of Milan, Department of Medicine and Surgery, University of Milan, 20122 Milano, Italy
| | - Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Pio Conti
- Immunology Division, Postgraduate Medical School, University of Chieti, 66100 Chieti, Italy
- Correspondence:
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Blomqvist A. Prostaglandin E 2 Production by Brain Endothelial Cells and the Generation of Fever. DNA Cell Biol 2023; 42:107-112. [PMID: 36720071 PMCID: PMC10024267 DOI: 10.1089/dna.2022.0662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We recently demonstrated that prostaglandin production in brain endothelial cells is both necessary and sufficient for the generation of fever during systemic immune challenge. I here discuss this finding in light of the previous literature and point to some unresolved issues.
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Affiliation(s)
- Anders Blomqvist
- Division of Neurobiology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
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26
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Bezerra LFG, Silva APSD, Cunha RXD, Oliveira JRSD, Barros MDD, Silva VMDMAD, Lima VLDM. Antioxidant, anti-inflammatory and analgesic activity of Mimosa acutistipula (Mart.) Benth. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:115964. [PMID: 36436717 DOI: 10.1016/j.jep.2022.115964] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 11/15/2022] [Accepted: 11/21/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Medicinal plants belonging to the genus Mimosa, such as Mimosa tenuiflora, M. caesalpinifolia, and M. verrucosa are known for their popular use for asthma, bronchitis and fever. Ethnopharmacological studies report that Mimosa acutistipula is used to treat alopecia and pharyngitis, conditions that can be related to oxidative stress, inflammatory processes and painful limitations. However, there is no studies on its efficacy and mechanism of action. AIM OF THE STUDY To elucidate the antioxidant, anti-inflammatory, analgesic and antipyretic activity of M. acutistipula leaves. MATERIALS AND METHODS Phytochemical profile of M. acutistipula extracts was evaluated by several reaction-specific methods. Secondary metabolites such as tannins, phenols and flavonoids were quantified with colorimetric assays. In vitro antioxidant potential was evaluated using DPPH and ABTS + as free radical scavenging tests, FRAP and phosphomolybdenum as oxide-reduction assays, and anti-hemolytic for lipid peroxidation evaluation. In vivo anti-inflammatory evaluation was performed by paw edema, and peritonitis induced by carrageenan. Analgesic effect and its possible mechanisms were determined by acetic acid-induced abdominal writhing and the formalin test. Antipyretic activity was evaluated by yeast-induced fever. RESULTS Cyclohexane, chloroform, ethyl acetate and methanol extracts of leaves had presence of tannins, flavonoids, phenol, alkaloids, terpenes (except methanolic extract), and saponins (only for methanolic and chloroformic extracts). In phenols, flavonoids and tannins quantification, methanolic and ethyl acetate extract had higher amounts of this phytocompounds. Ethyl acetate extract, due to its more expressive quantity of phenols and flavonoids, was chosen for carrying out the in vivo tests. Due to the relationship between oxidative stress and inflammation, antioxidant tests were performed, showing that ethyl acetate extract had a high total antioxidant activity (70.18%), moderate activity in DPPH radical scavenging, and a moderate ABTS + radical inhibition (33.61%), and FRAP assay (112.32 μg Fe2+/g). M. acutistipula showed anti-inflammatory activity, with 54.43% of reduction in paw edema (50 mg/kg) when compared to the vehicle. In peritonitis test, a reduction in the concentration of NO could be seen, which is highly involved in the anti-inflammatory activity and is responsible for the increase in permeability. In the analgesic evaluation, most significant results in writhing test were seen at 100 mg/kg, with a 34.7% reduction of writhing. A dual mechanism of action was confirmed with the formalin test, both neurogenic and inflammatory pain were reduced, with a mechanism via opioid route. In the antipyretic test, results were significantly decreased at all concentrations tested. CONCLUSION M. acutistipula leaves ethyl acetate extract showed expressive concentrations of phenolic compounds and antioxidant activity. It also exhibited anti-inflammatory and analgesic activity, besides its antipyretic effect. Thus, these results provide information regarding its popular use and might help future therapeutics involving this specimen.
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Affiliation(s)
- Layza Fernanda Gomes Bezerra
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - Ana Paula Sant'Anna da Silva
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - Rebeca Xavier da Cunha
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - João Ricardhis Saturnino de Oliveira
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - Mateus Domingues de Barros
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - Vycttor Mateus de Melo Alves da Silva
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil
| | - Vera Lúcia de Menezes Lima
- Laboratory of Lipids and Applications of Biomolecules in Prevalent and Neglected Diseases, Center of Biosciences, Federal University of Pernambuco, Professor Moraes Rego Avenue 1235, Recife, PE, 50670-90, Brazil.
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Napora P, Kobrzycka A, Pierzchała-Koziec K, Wieczorek M. Effect of selective cyclooxygenase inhibitors on animal behaviour and monoaminergic systems of the rat brain. Behav Brain Res 2023; 438:114143. [PMID: 36206821 DOI: 10.1016/j.bbr.2022.114143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/16/2022]
Abstract
The long-term effects of cyclooxygenase 1 and 2 (COX-1/2) inhibitors are usually tested in terms of the periphery of the organism. Therefore, we studied the effects of SC560 (selective COX-1 inhibitor) and celecoxib (selective COX-2 inhibitor) on the activity of brain monoaminergic systems and animal behaviour. Additionally, we tested the effect of these inhibitors during inflammation. We have observed that long-term administration of celecoxib reduces the activity of the noradrenergic system, increases the activity of dopaminergic and serotonergic systems, increases locomotor activity, and enhances the exploratory behaviour of rats. Administration of SC560 also increases the activity of dopaminergic and serotonergic systems but reduces locomotor activity and impairs the exploratory behaviour of rats. The mechanism responsible for decreased activity of the noradrenergic system may be related to the weakening of activity of the positive feedback loop between the paraventricular nucleus and coeruleus locus. We suggest that the effect of used inhibitors on the dopaminergic system is associated with a possible increase in anandamide concentration and its effect on dopamine reuptake in synaptic clefts. It also appears that cyclooxygenase peroxidase activity may play a role in this process. In turn, changes in the activity of the serotonergic system may be related to the activity of indoleamine-2,3-dioxygenase, which decreases because of the decreased concentration of pro-inflammatory compounds. We believe that behavioural changes induced by COX inhibitors are the result of the modified activity of monoaminergic CNS systems in the brainstem, hypothalamus, and medial prefrontal cortex.
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Affiliation(s)
- Paweł Napora
- Department of Neurobiology, University of Łódź, Faculty of Biology and Environmental Protection, 141/143 Pomorska Street, 90-236 Łódź, Poland.
| | - Anna Kobrzycka
- Department of Neurobiology, University of Łódź, Faculty of Biology and Environmental Protection, 141/143 Pomorska Street, 90-236 Łódź, Poland
| | - Krystyna Pierzchała-Koziec
- Department of Animal Physiology and Endocrinology, University of Agriculture in Kraków, 24/28 Adam Mickiewicz Avenue, 30-059 Łódź, Poland
| | - Marek Wieczorek
- Department of Neurobiology, University of Łódź, Faculty of Biology and Environmental Protection, 141/143 Pomorska Street, 90-236 Łódź, Poland.
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Ohno M, Sagata M, Sekiya T, Nomura N, Shingai M, Endo M, Kimachi K, Suzuki S, Thanh Nguyen C, Nakayama M, Ishigaki H, Ogasawara K, Itoh Y, Kino Y, Kida H. Assessing the pyrogenicity of whole influenza virus particle vaccine in cynomolgus macaques. Vaccine 2023; 41:787-794. [PMID: 36526501 DOI: 10.1016/j.vaccine.2022.12.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 10/31/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
Abstract
Among inactivated influenza vaccines, the whole virus particle vaccine (WPV) elicits superior priming responses to split virus vaccine (SV) in efficiently inducing humoral and cellular immunity. However, there is concern for undesired adverse events such as fever for WPV due to its potent immunogenicity. Therefore, this study investigated the febrile response induced by subcutaneous injection with quadrivalent inactivated influenza vaccines of good manufacturing grade for pharmaceutical or investigational products in cynomolgus macaques. Body temperature was increased by 1 °C-2 °C for 6-12 h after WPV administration at the first vaccination but not at the second shot, whereas SV did not affect body temperature at both points. Given the potent priming ability of WPV, WPV-induced fever may be attributed to immune responses that uniquely occur during priming. Since WPV-induced fever was blunted by pretreatment with indomethacin (a cyclooxygenase inhibitor), the febrile response by WPV is considered to depend on the increase in prostaglandins synthesized by cyclooxygenase. In addition, WPV, but not SV, induced the elevation of type I interferons and monocyte chemotactic protein 1 in the plasma; these factors may be responsible for pyrogenicity caused by WPV, as they can increase prostaglandins in the brain. Notably, sufficient antibody responses were acquired by half the amount of WPV without causing fever, suggesting that excessive immune responses to trigger the febrile response is not required for acquired immunity induction. Thus, we propose that WPV with a reduced antigen dose should be evaluated for potential clinical usage, especially in naïve populations.
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Affiliation(s)
- Marumi Ohno
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | | | - Toshiki Sekiya
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan; Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan
| | - Naoki Nomura
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan
| | - Masashi Shingai
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan; Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo, Japan
| | | | | | - Saori Suzuki
- Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | - Cong Thanh Nguyen
- Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | - Misako Nakayama
- Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | - Hirohito Ishigaki
- Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | - Kazumasa Ogasawara
- Global Station for Zoonosis Control, Global Institution for Collaborative Research and Education (GI-CoRE), Hokkaido University, Sapporo, Japan; Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | - Yasushi Itoh
- Division of Pathogenesis and Disease Regulation, Department of Pathology, Shiga University of Medical Science, Otsu, Japan
| | | | - Hiroshi Kida
- International Institute for Zoonosis Control, Hokkaido University, Sapporo, Japan; Institute for Vaccine Research and Development (HU-IVReD), Hokkaido University, Sapporo, Japan.
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Eskilsson A, Shionoya K, Blomqvist A. Prostaglandin production in brain endothelial cells during the initiation of fever. Commun Integr Biol 2023; 16:2166237. [PMID: 36644132 PMCID: PMC9839369 DOI: 10.1080/19420889.2023.2166237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The initiation of fever has been a matter of controversy. Based on observations of little or no induction of prostaglandin synthesizing enzymes in the brain during the first phase of fever it was suggested that fever is initiated by prostaglandin released into the circulation from cells in the liver and lungs. Here we show in the mouse that prostaglandin synthesis is rapidly induced in the brain after immune challenge. These data are consistent with our recent findings in functional experiments that prostaglandin production in brain endothelial cells is both necessary and sufficient for the generation of all phases of fever.
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Affiliation(s)
- Anna Eskilsson
- Division of Neurobiology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Kiseko Shionoya
- Division of Neurobiology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden
| | - Anders Blomqvist
- Division of Neurobiology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, Linköping, Sweden,CONTACT Anders Blomqvist Division of Neurobiology, Department of Biomedical and Clinical Sciences, Faculty of Medicine and Health Sciences, Linköping University, SE-581 85Linköping, Sweden
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30
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Anatychuk L, Zadorozhnyy O, Naumenko V, Kobylianskyi R, Kustryn T, Nasinnyk I, Korol A, Pasyechnikova N. Device Development for Ocular Surface Temperature and Heat Flux Density Measurement. Curr Eye Res 2023; 48:441-446. [PMID: 36594458 DOI: 10.1080/02713683.2023.2165104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
PURPOSE Currently, much attention is paid to measuring the temperature of the ocular surface in various ophthalmic diseases. However, for a comprehensive assessment of heat transfer of the eye, it is advisable to measure both the ocular surface temperature and the heat flux (HF) density. This will expand our knowledge of the physiology of the eye and create new possibilities for diagnosing ocular pathology. The present study aimed to develop a thermoelectric device to study rabbits' ocular surface temperature and HF density. METHODS The multichannel thermoelectric device was developed to measure the ocular surface temperature and HF density. This study included ten rabbits (20 eyes). In all animals, the temperature and the HF density were measured on the surface of the central cornea of both eyes. The measurement was repeated after pupils' dilation. RESULTS The corneal surface temperature of rabbits was 33.1 ± 0.8 °C, and the HF density of the surface of the cornea was 8.3 ± 0.6 mW/cm2. Our results revealed a high degree of interocular symmetry in the surface HF density in healthy rabbits. After pupil dilation, an increase in the HF density on the surface of the rabbit cornea compared with the initial data and control eye was noted. CONCLUSIONS The application of the developed device showed that it is safe and allows for the measurement of the ocular surface temperature and the HF density. We believe that further studies on the ocular surface HF density measurement in various eye diseases will allow us to evaluate the possibilities of this device and technique for diagnostic purposes.
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Affiliation(s)
- Lukyan Anatychuk
- Institute of Thermoelectricity of the National Academy of Sciences of Ukraine and the Ministry of Education and Science of Ukraine, Chernivtsi, Ukraine.,Department of Thermoelectricity, Yuriy Fedkovych Chernivtsi National University, Chernivtsi, Ukraine
| | - Oleg Zadorozhnyy
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
| | - Volodymyr Naumenko
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
| | - Roman Kobylianskyi
- Institute of Thermoelectricity of the National Academy of Sciences of Ukraine and the Ministry of Education and Science of Ukraine, Chernivtsi, Ukraine.,Department of Thermoelectricity, Yuriy Fedkovych Chernivtsi National University, Chernivtsi, Ukraine
| | - Taras Kustryn
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
| | - Illia Nasinnyk
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
| | - Andrii Korol
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
| | - Nataliya Pasyechnikova
- State Institution "The Filatov Institute of Eye Diseases and Tissue Therapy of the National Academy of Medical Sciences of Ukraine", Odesa, Ukraine
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31
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Tegegne BA, Alehegn AA. Antipyretic Potential of 80% Methanol Extract and Solvent Fractions of Bersama abyssinica Fresen. (Melianthaceae) Leaves Against Yeast-Induced Pyrexia in Mice. J Exp Pharmacol 2023; 15:81-91. [PMID: 36879895 PMCID: PMC9985388 DOI: 10.2147/jep.s390825] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
Introduction Since fever is a complicated physiological reaction to an infection or aseptic stimulus, finding safer solutions that are more potent and derived from plants is essential to resolving this issue. Bersama abyssinica (Melianthaceae) is traditionally used to treat fever, though this has yet to be proven scientifically. Objective The present study aimed to assess the antipyretic potential of leaf extract and solvent fractions of B. abyssinica. Methods The antipyretic activities of crude extract and solvent fractions of B. abyssinica leaves were evaluated using a yeast-induced pyrexia model at three different dose ranges (100mg/kg, 200mg/kg, and 400mg/kg) methanol extract as well as chloroform, ethyl acetate, and aqueous fractions to mice showing an increase in temperature of ≥0.5 °C. The rectal temperature of each mouse was recorded using a digital thermometer. To analyze the data, SPSS version 20 and one-way ANOVA followed by Tukey's HSD post hoc test to compare results between groups were utilized. Results The crude extract demonstrated significant antipyretic potential (P<0.05 by 100 mg/kg and 200 mg/kg as well as P<0.01 by 400 mg/kg), with a maximum of 95.06% reduction in rectal temperature at 400 mg/kg, comparable to 98.37% at 2.5 hours by the standard drug. Similarly, all doses of the aqueous fraction, as well as 200 mg/kg and 400 mg/kg doses of the ethyl acetate fractions, resulted in a significant (P<0.05) reduction in rectal temperature when compared to the corresponding value of the negative control group. Conclusion Extracts of B. abyssinica leaves were found to have a significant antipyretic effect. Thus, the use of the plant for pyrexia in traditional settings has scientific ground.
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Affiliation(s)
- Bantayehu Addis Tegegne
- Department of Pharmacy, College of Health Sciences, Debre Markos University, Debre Markos, Ethiopia
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32
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Chen R, Wang X, Xu H, Zhao R, Hu Q. Comparative Study on Volatile Oils among Bupleuri radix Species and Habitats: Yields, Chemical Characterization and Antipyretic Activities. Chem Biodivers 2022; 19:e202200549. [PMID: 36382416 DOI: 10.1002/cbdv.202200549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 11/14/2022] [Indexed: 11/18/2022]
Abstract
Volatile oils from several Bupleuri radix (BR) are reported as potential sources of drugs. To provide evidence for the application of BR, the volatile oils from 19 batches of different species and habitats of BR including Bupleurum chinese DC. (BCD), Bupleurum scorzonerifolium Willd. (BSW), Bupleurum bicaule Helm (BBH), Bupleurum marginatum var. stenophyllum (Wolff) Shan et Y.Li (BMS), Bupleurum marginatum Wall.ex DC. (BMW) and Bupleurum falcatum L. (BFL) were investigated. The composition of BR volatile oils was determined by GC/MS. Samples were clustered by hierarchical cluster analysis (HCA). Fever was induced by Lipopolysaccharide (LPS), and antipyretic activities of BR volatile oils were evaluated with Chaihu injection (CI) as the positive control. The yields of volatile oils were among 360-5320 ppm. A total of 229 components were identified by GC/MS. Samples could be divided into 4 clusters by HCA. 4 representative samples, one for each cluster, were selected to further compare their antipyretic activities. For the highest content of volatile oil (5320 ppm) and the best activity, BSW has great potential for utilization.
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Affiliation(s)
- Ruoqiao Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Xiaoshuang Wang
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Hongting Xu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
| | - Ruizhi Zhao
- Guangdong Provincial Key Laboratory of Clinical Research on Traditional Chinese Medicine Syndrome, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510006, China
| | - Qiaohong Hu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou, 510006, China
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Prostaglandin production selectively in brain endothelial cells is both necessary and sufficient for eliciting fever. Proc Natl Acad Sci U S A 2022; 119:e2122562119. [PMID: 36252026 PMCID: PMC9618080 DOI: 10.1073/pnas.2122562119] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Fever is known to be elicited by prostaglandin E2 acting on the brain, but its origin has remained disputed. We show in mice that selective deletion of prostaglandin synthesis in brain endothelial cells, but not in neural cells or myeloid cells, abolished fever induced by intravenous administration of lipopolysaccharide and that selective rescue of prostaglandin synthesis in brain endothelial cells reinstated fever. These data demonstrate that prostaglandin production in brain endothelial cells is both necessary and sufficient for eliciting fever.
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34
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Miyata S. Glial functions in the blood-brain communication at the circumventricular organs. Front Neurosci 2022; 16:991779. [PMID: 36278020 PMCID: PMC9583022 DOI: 10.3389/fnins.2022.991779] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 09/20/2022] [Indexed: 11/13/2022] Open
Abstract
The circumventricular organs (CVOs) are located around the brain ventricles, lack a blood-brain barrier (BBB) and sense blood-derived molecules. This review discusses recent advances in the importance of CVO functions, especially glial cells transferring periphery inflammation signals to the brain. The CVOs show size-limited vascular permeability, allowing the passage of molecules with molecular weight <10,000. This indicates that the lack of an endothelial cell barrier does not mean the free movement of blood-derived molecules into the CVO parenchyma. Astrocytes and tanycytes constitute a dense barrier at the distal CVO subdivision, preventing the free diffusion of blood-derived molecules into neighboring brain regions. Tanycytes in the CVOs mediate communication between cerebrospinal fluid and brain parenchyma via transcytosis. Microglia and macrophages of the CVOs are essential for transmitting peripheral information to other brain regions via toll-like receptor 2 (TLR2). Inhibition of TLR2 signaling or depletion of microglia and macrophages in the brain eliminates TLR2-dependent inflammatory responses. In contrast to TLR2, astrocytes and tanycytes in the CVOs of the brain are crucial for initiating lipopolysaccharide (LPS)-induced inflammatory responses via TLR4. Depletion of microglia and macrophages augments LPS-induced fever and chronic sickness responses. Microglia and macrophages in the CVOs are continuously activated, even under normal physiological conditions, as they exhibit activated morphology and express the M1/M2 marker proteins. Moreover, the microglial proliferation occurs in various regions, such as the hypothalamus, medulla oblongata, and telencephalon, with a marked increase in the CVOs, due to low-dose LPS administration, and after high-dose LPS administration, proliferation is seen in most brain regions, except for the cerebral cortex and hippocampus. A transient increase in the microglial population is beneficial during LPS-induced inflammation for attenuating sickness response. Transient receptor potential receptor vanilloid 1 expressed in astrocytes and tanycytes of the CVOs is responsible for thermoregulation upon exposure to a warm environment less than 37°C. Alternatively, Nax expressed in astrocytes and tanycytes of the CVOs is crucial for maintaining body fluid homeostasis. Thus, recent findings indicate that glial cells in the brain CVOs are essential for initiating neuroinflammatory responses and maintaining body fluid and thermal homeostasis.
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35
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Kamm GB, Siemens J. Neuroscience: Detection of systemic inflammation by the brain. Curr Biol 2022; 32:R751-R753. [PMID: 35820388 DOI: 10.1016/j.cub.2022.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
When confronted with illness, humans and animals undergo critical changes in their behavior and physiology. New research shows how neuronal circuits detect sickness and coordinate illness-specific responses.
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Affiliation(s)
- Gretel B Kamm
- Cell Biology and Biophysics Unit, European Molecular Biology Laboratory (EMBL), Meyerhofstraße 1, 69117 Heidelberg, Germany
| | - Jan Siemens
- Department of Pharmacology, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany; Molecular Medicine Partnership Unit (MMPU), European Molecular Biology Laboratory (EMBL), Meyerhofstraße 1, 69117 Heidelberg, Germany.
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36
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Mota CM, Madden CJ. Neural circuits mediating circulating interleukin-1β-evoked fever in the absence of prostaglandin E2 production. Brain Behav Immun 2022; 103:109-121. [PMID: 35429606 PMCID: PMC9524517 DOI: 10.1016/j.bbi.2022.04.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 03/31/2022] [Accepted: 04/10/2022] [Indexed: 10/18/2022] Open
Abstract
Infectious diseases and inflammatory conditions recruit the immune system to mount an appropriate acute response that includes the production of cytokines. Cytokines evoke neurally-mediated responses to fight pathogens, such as the recruitment of thermoeffectors, thereby increasing body temperature and leading to fever. Studies suggest that the cytokine interleukin-1β (IL-1β) depends upon cyclooxygenase (COX)-mediated prostaglandin E2 production for the induction of neural mechanisms to elicit fever. However, COX inhibitors do not eliminate IL-1β-induced fever, thus suggesting that COX-dependent and COX-independent mechanisms are recruited for increasing body temperature after peripheral administration of IL-1β. In the present study, we aimed to build a foundation for the neural circuit(s) controlling COX-independent, inflammatory fever by determining the involvement of brain areas that are critical for controlling the sympathetic outflow to brown adipose tissue (BAT) and the cutaneous vasculature. In anesthetized rats, pretreatment with indomethacin, a non-selective COX inhibitor, did not prevent BAT thermogenesis or cutaneous vasoconstriction (CVC) induced by intravenous IL-1β (2 µg/kg). BAT and cutaneous vasculature sympathetic premotor neurons in the rostral raphe pallidus area (rRPa) are required for IL-1β-evoked BAT thermogenesis and CVC, with or without pretreatment with indomethacin. Additionally, activation of glutamate receptors in the dorsomedial hypothalamus (DMH) is required for COX-independent, IL-1β-induced BAT thermogenesis. Therefore, our data suggests that COX-independent mechanisms elicit activation of neurons within the DMH and rRPa, which is sufficient to trigger and mount inflammatory fever. These data provide a foundation for elucidating the brain circuits responsible for COX-independent, IL-1β-elicited fevers.
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Affiliation(s)
| | - Christopher J. Madden
- Corresponding author at: Dept. of Neurological Surgery, Oregon Health & Science University, 3181 Sam Jackson Park Road, Portland, OR 97239, United States. (C.J. Madden)
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Shi L, Yang J, Zhang L, Zhang Y, Yan G, Zhang H, Yang J, Wang P, Zhang G, Zhou Z, Wang X. Adverse reactions of ALA-PDT for the treatment of cutaneous diseases: A retrospective study. Photodiagnosis Photodyn Ther 2022; 38:102783. [PMID: 35218941 DOI: 10.1016/j.pdpdt.2022.102783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 02/10/2022] [Accepted: 02/22/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND 5-Aminolaevulinic acid photodynamic therapy (ALA-PDT) is an effective therapy for cutaneous diseases, such as precancers, superficial non melanoma skin cancers and certain inflammatory or viral conditions. However, the absence of a complete picture of adverse reactions limits the promotion of ALA-PDT. OBJECTIVE To systemically investigate the detailed evidence of adverse reactions relating to ALA-PDT for skin diseases. METHODS A retrospective study performed at the Shanghai Skin Disease Hospital. RESULTS In the retrospective study, 439 patients were included. Incidences of adverse reactions, including in-treatment pain (98.8%), erythema (92.4%), edema (35.0%), exudation (23.0%), hyperpigmentation (27.3%) were clarified. Edema was more common in female patients (P<0.05). Patients with HPV-related skin diseases were more likely to suffer erythema, edema or exudation (P<0.05). Hyperpigmentation was more likely to occur in skin appendage disorders (P<0.05). Fever (2.4%) and hypopigmentation (1.9%) are two neglected adverse reactions analyzed in detail. Fever is more prevalent in female patients. Hypopigmentation occurred predominantly in elderly with skin cancer or precancerosis lesions. CONCLUSION The results outline detailed information about the adverse reactions, including systemic reactions following ALA-PDT, assisting dermatologists in predicting and managing adverse reactions for greater efficacy and higher patient satisfaction.
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Affiliation(s)
- Lei Shi
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Jiayi Yang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Linglin Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Yunfeng Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Guorong Yan
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Haiyan Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Jin Yang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Peiru Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Guolong Zhang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Zhongxia Zhou
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China
| | - Xiuli Wang
- Institute of Photomedicine, Shanghai Skin Disease Hospital, School of Medicine, Tongji University, Shanghai 200092, China.
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Curcumin attenuates LPS-induced sickness behavior and fever in rats by modulating Nrf2 activity. Neurosci Lett 2022; 781:136680. [PMID: 35568344 DOI: 10.1016/j.neulet.2022.136680] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/26/2022] [Accepted: 05/09/2022] [Indexed: 11/21/2022]
Abstract
Lipopolysaccharide (LPS) is a potent inducer of inflammation, triggering behavioral changes and fever. The present study aimed to evaluate whether pretreatment with curcumin prevents the behavioral changes and fever induced by LPS through the modulation of nuclear factor-erythroid 2 related factor 2 (Nrf2). Male Wistar rats received either vehicle or LPS and after 2 h, the behavioral responses were assessed through open field test (OFT), social interaction test, forced swim test (FST), and food intake assessment. The febrile response was assessed by telemetry after vehicle or LPS injection to evaluate the effect of curcumin on the thermoregulatory response during the immunological challenge. The pretreatment with curcumin at doses of 50 and 100 mg/kg prevented the reduction of distance traveled on OFT, increased the immobility time of FST, impaired social withdrawal, decreased food intake, and induced fever. In addition, at these doses, it was possible to observe a significant decrease in the plasma levels of cytokines and an increase in Nrf2 translocation to the cell nucleus during the immunological challenge. Our data provide further evidence of curcumin's ability to prevent LPS-induced sickness behavior and fever possibly by a mechanism related to the modulation of Nrf2 translocation.
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Osaka T. The EP 3 and EP 4 Receptor Subtypes both Mediate the Fever-producing Effects of Prostaglandin E 2 in the Rostral Ventromedial Preoptic Area of the Hypothalamus in Rats. Neuroscience 2022; 494:25-37. [PMID: 35550162 DOI: 10.1016/j.neuroscience.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 04/25/2022] [Accepted: 05/01/2022] [Indexed: 11/29/2022]
Abstract
This study aimed to re-examine the receptor subtype that mediates the fever-producing effects of prostaglandin E2 (PGE2) in the rostral ventromedial preoptic area (rvmPOA) of the hypothalamus. Among the four subtypes of PGE2 receptors (EP1, EP2, EP3, and EP4), EP3 receptor is crucially involved in the febrile effects of PGE2. However, it is possible for other subtypes of PGE2 receptor to contribute in the central mechanism of fever generation. Accordingly, effects of microinjection of PGE2 receptor subtype-specific agonists or antagonists were examined at the locus where a microinjection of a small amount (420 fmol) of PGE2 elicited prompt increases in the O2 consumption rate (VO2), heart rate, and colonic temperature (Tc) in the rvmPOA of urethane-chloralose-anesthetized rats. The EP3 agonist sulprostone mimicked, whereas its antagonist L-798,106 reduced, the febrile effects of PGE2 microinjected into the same site. Similarly, the EP4 agonist rivenprost mimicked, whereas its antagonist ONO-AE3-208 reduced, the effects of PGE2 microinjected into the same site. In contrast, microinjection of the EP1 agonist iloprost induced a very small increase in VO2 but did not have significant influences on the heart rate and Tc, whereas its antagonist, AH6809, did not affect the PGE2-induced responses. Microinjection of the EP2 agonist butaprost had no effects on the VO2, heart rate, and Tc. The results suggest that the EP3 and EP4 receptor subtypes are both involved in the fever generated by PGE2 in the rvmPOA.
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Affiliation(s)
- Toshimasa Osaka
- National Institutes of Biomedical Innovation, Health and Nutrition, Shinjuku 162-8636, Japan.
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Wang H, Tian L, Han Y, Ma X, Hou Y, Bai G. Mechanism Assay of Honeysuckle for Heat-Clearing Based on Metabolites and Metabolomics. Metabolites 2022; 12:121. [PMID: 35208196 PMCID: PMC8874459 DOI: 10.3390/metabo12020121] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/25/2022] [Accepted: 01/26/2022] [Indexed: 11/24/2022] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs), such as cyclooxygenase (Cox)-1/2 inhibitor, have emerged as potent antipyretics and analgesics. However, few herbs with Cox-1/2 inhibitory activity are commonly used for heat-clearing in China. Although these are known to have antipyretic activity, there is a lack of molecular data supporting their activity. Using the traditional Chinese medicine herb honeysuckle (Hon) as an example, we explored key antipyretic active compounds and their mechanisms of action by assessing their metabolites and metabolomics. Mitogen-activated protein kinase (MAPK) 3 and protein kinase B (AKT) 1 were suggested as key targets regulated primarily by chlorogenic acid (CA) and swertiamarin (SWE). CA and SWE synergistically inhibited the production of interleukin (IL)-1 and IL-6, alleviated generation of prostaglandin E2, and played an antipyretic role equivalent to honeysuckle extract at the same dose contents within 3 h. Collectively, these findings indicated that lipopolysaccharide-induced fever can be countered by CA with SWE synergistically, allowing the substitution of a crude extract of complex composition with active compounds. Our findings demonstrated that, unlike the traditional NSAIDs, the Hon extract showed a remote and indirect mechanism for alleviating fever that depended on the phosphatidylinositol-3-kinase-AKT and MAPK pathways by regulating the principal mediator of inflammation.
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Affiliation(s)
- Hechen Wang
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
| | - Lu Tian
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
| | - Yiman Han
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
| | - Xiaoyao Ma
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Yuanyau Hou
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
| | - Gang Bai
- State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin 300353, China; (H.W.); (L.T.); (Y.H.); (X.M.)
- Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin 300353, China
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Cheng Y, Xu J, Zeng R, Zhao X, Gao W, Quan J, Hu X, Shen Z, Zhang J. The Role of Prostaglandin E2 Synthesized in Rat Lateral Parabrachial Nucleus in LPS-Induced Fever. Neuroendocrinology 2022; 112:399-416. [PMID: 34348333 DOI: 10.1159/000518491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 07/15/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The lateral parabrachial nucleus (LPBN) is considered to be a brain site of the pyrogenic action of prostaglandin (PG) E2 outside of the preoptic area. Yet, the role of the LPBN in fever following a systemic immune challenge remains poorly understood. METHODS We examined the expression of cyclooxygenase-2 (COX-2) and microsomal PGE synthase-1 (mPGES-1) in the LPBN after the intraperitoneal injection of lipopolysaccharide (LPS). We investigated the effects of LPBN NS-398 (COX-2 inhibitor) on LPS-induced fever, the effects of direct LPBN PGE2 administration on the energy expenditure (EE), brown adipose tissue (BAT) thermogenesis, neck muscle electromyographic activity and tail temperature, and the effects of PGE2 on the spontaneous firing activity and thermosensitivity of in vitro LPBN neurons in a brain slice. RESULTS The COX-2 and mPGES-1 enzymes were upregulated at both mRNA and protein levels. The microinjection of NS-398 in the LPBN attenuated the LPS-induced fever. Direct PGE2 administration in the LPBN resulted in a febrile response by a coordinated response of increased EE, BAT thermogenesis, shivering, and possibly decreased heat loss through the tail. The LPBN neurons showed a clear anatomical distinction in the firing rate response to PGE2, with the majority of PGE2-excited or -inhibited neurons being located in the external lateral or dorsal subnucleus of the LPBN, respectively. However, neither the firing rate nor the thermal coefficient response to PGE2 showed any difference between warm-sensitive, cold-sensitive, and temperature-insensitive neurons in the LPBN. CONCLUSIONS PGE2 synthesized in the LPBN was at least partially involved in LPS-induced fever via its different modulations of the firing rate of neurons in different LPBN subnuclei.
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Affiliation(s)
- Yongjing Cheng
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Jianhui Xu
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Ruixin Zeng
- School of Dentistry, Zunyi Medical University, Zunyi, China
| | - Xi Zhao
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Wenmin Gao
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
| | - Junru Quan
- School of Clinical Medicine, Chengdu Medical College, Chengdu, China
| | - Xiaosong Hu
- School of Basic Medicine, Chengdu Medical College, Chengdu, China
| | - Ziling Shen
- School of Basic Medicine, Chengdu Medical College, Chengdu, China
| | - Jie Zhang
- Key Laboratory of Thermoregulation and Inflammation of Sichuan Higher Education Institutes, Chengdu Medical College, Chengdu, China
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Keringer P, Furedi N, Gaszner B, Miko A, Pakai E, Fekete K, Olah E, Kelava L, Romanovsky AA, Rumbus Z, Garami A. The hyperthermic effect of central cholecystokinin is mediated by the cyclooxygenase-2 pathway. Am J Physiol Endocrinol Metab 2022; 322:E10-E23. [PMID: 34779255 DOI: 10.1152/ajpendo.00223.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Cholecystokinin (CCK) increases core body temperature via CCK2 receptors when administered intracerebroventricularly (icv). The mechanisms of CCK-induced hyperthermia are unknown, and it is also unknown whether CCK contributes to the fever response to systemic inflammation. We studied the interaction between central CCK signaling and the cyclooxygenase (COX) pathway. Body temperature was measured in adult male Wistar rats pretreated with intraperitoneal infusion of the nonselective COX enzyme inhibitor metamizol (120 mg/kg) or a selective COX-2 inhibitor, meloxicam, or etoricoxib (10 mg/kg for both) and, 30 min later, treated with intracerebroventricular CCK (1.7 µg/kg). In separate experiments, CCK-induced neuronal activation (with and without COX inhibition) was studied in thermoregulation- and feeding-related nuclei with c-Fos immunohistochemistry. CCK increased body temperature by ∼0.4°C from 10 min postinfusion, which was attenuated by metamizol. CCK reduced the number of c-Fos-positive cells in the median preoptic area (by ∼70%) but increased it in the dorsal hypothalamic area and in the rostral raphe pallidus (by ∼50% in both); all these changes were completely blocked with metamizol. In contrast, CCK-induced satiety and neuronal activation in the ventromedial hypothalamus were not influenced by metamizol. CCK-induced hyperthermia was also completely blocked with both selective COX-2 inhibitors studied. Finally, the CCK2 receptor antagonist YM022 (10 µg/kg icv) attenuated the late phases of fever induced by bacterial lipopolysaccharide (10 µg/kg; intravenously). We conclude that centrally administered CCK causes hyperthermia through changes in the activity of "classical" thermoeffector pathways and that the activation of COX-2 is required for the development of this response.NEW & NOTEWORTHY An association between central cholecystokinin signaling and the cyclooxygenase-prostaglandin E pathway has been proposed but remained poorly understood. We show that the hyperthermic response to the central administration of cholecystokinin alters the neuronal activity within efferent thermoeffector pathways and that these effects are fully blocked by the inhibition of cyclooxygenase. We also show that the activation of cyclooxygenase-2 is required for the hyperthermic effect of cholecystokinin and that cholecystokinin is a modulator of endotoxin-induced fever.
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Affiliation(s)
- Patrik Keringer
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Nora Furedi
- Department of Anatomy, Research Group for Mood Disorders, Centre for Neuroscience, Medical School and Szentagothai Research Centre, University of Pécs, Pécs, Hungary
| | - Balazs Gaszner
- Department of Anatomy, Research Group for Mood Disorders, Centre for Neuroscience, Medical School and Szentagothai Research Centre, University of Pécs, Pécs, Hungary
| | - Alexandra Miko
- Institute for Translational Medicine, Medical School and Szentagothai Research Centre, University of Pécs, Pécs, Hungary
| | - Eszter Pakai
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Kata Fekete
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Emoke Olah
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Leonardo Kelava
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | | | - Zoltan Rumbus
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
| | - Andras Garami
- Department of Thermophysiology, Institute for Translational Medicine, Medical School, University of Pécs, Pécs, Hungary
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Tiwary E, Hu M, Prasain JK. Sperm-Guiding Unconventional Prostaglandins in C. elegans: Synthesis and Signaling. Metabolites 2021; 11:metabo11120853. [PMID: 34940611 PMCID: PMC8705762 DOI: 10.3390/metabo11120853] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 12/02/2021] [Accepted: 12/04/2021] [Indexed: 02/02/2023] Open
Abstract
Prostaglandins comprise a family of lipid signaling molecules derived from polyunsaturated fatty acids and are involved in a wide array of biological processes, including fertilization. Prostaglandin-endoperoxide synthase (a.k.a. cyclooxygenase or Cox) initiates prostaglandin synthesis from 20-carbon polyunsaturated fatty acids, such as arachidonic acid. Oocytes of Caenorhabditis elegans (C. elegans) have been shown to secrete sperm-guidance cues prostaglandins, independent of Cox enzymes. Both prostaglandin synthesis and signal transduction in C. elegans are environmentally modulated pathways that regulate sperm guidance to the fertilization site. Environmental factors such as food triggers insulin and TGF-β secretion and their levels regulate tissue-specific prostaglandin synthesis in C. elegans. This novel PG pathway is abundant in mouse and human ovarian follicular fluid, where their functions, mechanism of synthesis and pathways remain to be established. Given the importance of prostaglandins in reproductive processes, a better understanding of how diets and other environmental factors influence their synthesis and function may lead to new strategies towards improving fertility in mammals.
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Affiliation(s)
- Ekta Tiwary
- Department of Medicines, University of Alabama at Birmingham, Birmingham, AL 35205, USA;
| | - Muhan Hu
- Medical Scientist Training Program, University of Alabama at Birmingham, Birmingham, AL 35205, USA;
| | - Jeevan K. Prasain
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
- Correspondence: ; Tel.: +1-(205)-996-2612
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Cardoso AM, Silvério MNO, de Oliveira Maciel SFV. Purinergic signaling as a new mechanism underlying physical exercise benefits: a narrative review. Purinergic Signal 2021; 17:649-679. [PMID: 34590239 PMCID: PMC8677870 DOI: 10.1007/s11302-021-09816-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Accepted: 07/21/2021] [Indexed: 11/27/2022] Open
Abstract
In the last years, it has become evident that both acute and chronic physical exercise trigger responses/adaptations in the purinergic signaling and these adaptations can be considered one important mechanism related to the exercise benefits for health improvement. Purinergic system is composed of enzymes (ectonucleotidases), receptors (P1 and P2 families), and molecules (ATP, ADP, adenosine) that are able to activate these receptors. These components are widely distributed in almost all cell types, and they respond/act in a specific manner depending on the exercise types and/or intensities as well as the cell type (organ/tissue analyzed). For example, while acute intense exercise can be associated with tissue damage, inflammation, and platelet aggregation, chronic exercise exerts anti-inflammatory and anti-aggregant effects, promoting health and/or treating diseases. All of these effects are dependent on the purinergic signaling. Thus, this review was designed to cover the aspects related to the relationship between physical exercise and purinergic signaling, with emphasis on the modulation of ectonucleotidases and receptors. Here, we discuss the impact of different exercise protocols as well as the differences between acute and chronic effects of exercise on the extracellular signaling exerted by purinergic system components. We also reinforce the concept that purinergic signaling must be understood/considered as a mechanism by which exercise exerts its effects.
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Affiliation(s)
- Andréia Machado Cardoso
- Graduate Program in Biomedical Sciences and Medicine Course, Federal University of Fronteira Sul - UFFS, Campus Chapecó, Rodovia SC 484 - Km 02, Fronteira Sul, 89815-899, Brazil.
- Graduate Program in Physical Education, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil.
| | - Mauro Nicollas Oliveira Silvério
- Medicine Course, Federal University of Fronteira Sul - UFFS, Campus Chapecó, Rodovia SC 484 - Km 02, Fronteira Sul, 89815-899, Brazil
| | - Sarah Franco Vieira de Oliveira Maciel
- Graduate Program in Biomedical Sciences and Medicine Course, Federal University of Fronteira Sul - UFFS, Campus Chapecó, Rodovia SC 484 - Km 02, Fronteira Sul, 89815-899, Brazil
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Isoorientin Inhibits Amyloid β 25-35-Induced Neuronal Inflammation in BV2 Cells by Blocking the NF-κB Signaling Pathway. Molecules 2021; 26:molecules26227056. [PMID: 34834150 PMCID: PMC8623752 DOI: 10.3390/molecules26227056] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/08/2021] [Accepted: 11/17/2021] [Indexed: 11/28/2022] Open
Abstract
Alzheimer’s disease (AD) is a severe neurodegenerative disorder. AD is pathologically characterized by the formation of intracellular neurofibrillary tangles, and extracellular amyloid plaques which were comprised of amyloid-beta (Aβ) peptides. Aβ induces neurodegeneration by activating microglia, which triggers neurotoxicity by releasing various inflammatory mediators and reactive oxygen species (ROS). Nuclear factor-kappa B (NF-κB) is expressed in human tissues including the brain and plays an important role in Aβ-mediated neuronal inflammation. Thus, the identification of molecules that inhibit the NF-κB pathway is considered an attractive strategy for the treatment and prevention of AD. Isoorientin (3′,4′,5,7-Tetrahydroxy-6-C-glucopyranosyl flavone; ISO), which can be extracted from several plant species, such as Philostachys and Patrinia is known to have various pharmacological activities such as anticancer, antioxidant, and antibacterial activity. However, the effect of ISO on Aβ-mediated inflammation and apoptosis in the brain has yet to be elucidated. In the present study, we investigated whether ISO regulated Aβ-induced neuroinflammation in microglial cells and further explored the underlying mechanisms. Our results showed that ISO inhibited the expression of iNOS and COX-2 induced by Aβ25–35. And, it inhibited the secretion of pro-inflammatory cytokines such as tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6). In addition, ISO reduced the ROS production in Aβ25–35-induced BV2 cells and inhibited NF-κB activation. Furthermore, ISO blocked Aβ25–35-induced apoptosis of BV2 cells. Based on these findings, we suggest that ISO represents a promising therapeutic drug candidate for the treatment and prevention of AD.
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Pittman QJ. Vasopressin and central control of the cardiovascular system: A 40-year retrospective. J Neuroendocrinol 2021; 33:e13011. [PMID: 34235812 DOI: 10.1111/jne.13011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 06/25/2021] [Indexed: 01/24/2023]
Abstract
In the 40 years since vasopressin (AVP) was reported to have a central action with respect to raising blood pressure, the finding has been repeatedly replicated using a variety of complimentary approaches. The role of AVP as a central neurotransmitter involved in control of the cardiovascular system is now textbook material. However, it is evident that brain AVP plays, at best, a minor role in regulation of normal blood pressure. However, it appears to be an important player in a several cardiovascular-associated pathologies, ranging from hypertension to neural changes associated with heart failure. There are many interventions that have been shown to affect neural function, many of which are associated with alterations in behaviour. Possible alterations in neuronal AVP actions relevant to cardiovascular control in the setting of chronic inflammatory disease, early-life stress and inflammation are suggested areas for future research.
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Affiliation(s)
- Quentin J Pittman
- Department of Physiology and Pharmacology, Hotchkiss Brain Institute, University of Calgary, Calgary, AB, Canada
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Antoun S, Ellul P, Peyre H, Rosenzwajg M, Gressens P, Klatzmann D, Delorme R. Fever during pregnancy as a risk factor for neurodevelopmental disorders: results from a systematic review and meta-analysis. Mol Autism 2021; 12:60. [PMID: 34537069 PMCID: PMC8449704 DOI: 10.1186/s13229-021-00464-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 08/06/2021] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Fever during pregnancy is a relatively common and most often trivial event. However, under specific conditions, it could affect significantly fetal brain development. Few studies, with inconsistent results, investigated whether fever, regardless the pathogen, could represent a risk factor for neurodevelopmental disorders (NDD) in the offspring. We aimed to explore further this question by performing a systematic review and meta-analysis. METHODS Peer-reviewed studies exploring the occurrence of NDD in offspring after a fetal exposure to maternal fever were included. We specifically considered the impact of fever severity and duration, taking into consideration some confounding variables such as the use of antipyretic during pregnancy, the trimester in which the fever arose, the maternal age or smoking at time of gestation. MEDLINE, EMBASE, PsycINFO, Cochrane and Web of Science were searched without language restriction. PRISMA recommendations were followed. Odds ratio (OR) were pooled using random-effects meta-analysis. Heterogeneity in effect size across studies was studied using random-effects meta-regression analysis. (PROSPERO CRD42020182801). RESULTS We finally considered ten studies gathering a total of 10,304 children with NDD. Among them, 1394 were exposed to fever during pregnancy. The selected studies were divided into 5 case-control studies and 5 cohort studies. Maternal exposure to fever during pregnancy increased the risk of NDD in offspring with an OR of 1.24 [95% CI: 1.12-1.38]. Secondary analysis revealed an increased risk for NDD when fever occurred during the first trimester of gestation [OR 1.13-95% CI: 1.02-1.26]. LIMITATIONS We excluded studies that considered infections with no evidence of fever. Another potential limitation may be the possible heterogeneity between study designs (cohorts and case-control). CONCLUSION Additional evidence supported the association between fever during pregnancy and increased risk for NDD in offspring. Careful monitoring should be considered for children born from mothers with a febrile episode during pregnancy (specifically during the first trimester).
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Affiliation(s)
- Stephanie Antoun
- Child and Adolescent Psychiatry Department, Robert Debré Hospital, APHP, Paris University, Paris, France
| | - Pierre Ellul
- Child and Adolescent Psychiatry Department, Robert Debré Hospital, APHP, Paris University, Paris, France
- Immunology-Immunopathology-Immunotherapy (i3), INSERM U959, Sorbonne University, Paris, France
| | - Hugo Peyre
- Child and Adolescent Psychiatry Department, Robert Debré Hospital, APHP, Paris University, Paris, France
- Université de Paris, Inserm UMR, 1141 NeuroDiderot, Paris, France
| | - Michelle Rosenzwajg
- Immunology-Immunopathology-Immunotherapy (i3), INSERM U959, Sorbonne University, Paris, France
| | - Pierre Gressens
- Université de Paris, Inserm UMR, 1141 NeuroDiderot, Paris, France
- Centre for the Developing Brain, Division of Imaging Sciences and Biomedical Engineering, King’s College London, King’s Health Partners, St. Thomas’ Hospital, London, UK
| | - David Klatzmann
- Immunology-Immunopathology-Immunotherapy (i3), INSERM U959, Sorbonne University, Paris, France
| | - Richard Delorme
- Child and Adolescent Psychiatry Department, Robert Debré Hospital, APHP, Paris University, Paris, France
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France
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Abstract
Interactions between the immune system and the nervous system have been described mostly in the context of diseases. More recent studies have begun to reveal how certain immune cell-derived soluble effectors, the cytokines, can influence host behaviour even in the absence of infection. In this Review, we contemplate how the immune system shapes nervous system function and how it controls the manifestation of host behaviour. Interactions between these two highly complex systems are discussed here also in the context of evolution, as both may have evolved to maximize an organism's ability to respond to environmental threats in order to survive. We describe how the immune system relays information to the nervous system and how cytokine signalling occurs in neurons. We also speculate on how the brain may be hardwired to receive and process information from the immune system. Finally, we propose a unified theory depicting a co-evolution of the immune system and host behaviour in response to the evolutionary pressure of pathogens.
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Pérez DJ, Patiño EB, Orozco J. Electrochemical Nanobiosensors as Point‐of‐Care Testing Solution to Cytokines Measurement Limitations. ELECTROANAL 2021. [DOI: 10.1002/elan.202100237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- David J. Pérez
- Max Planck Tandem Group in Nanobioengineering University of Antioquia Complejo Ruta N Calle 67, N° 52–20 050010 Medellín Colombia
- Grupo de Bioquímica Estructural de Macromoléculas Chemistry Institute University of Antioquia Lab 1–314 Calle 67, N° 53–108 050010 Medellín Colombia
| | - Edwin B. Patiño
- Grupo de Bioquímica Estructural de Macromoléculas Chemistry Institute University of Antioquia Lab 1–314 Calle 67, N° 53–108 050010 Medellín Colombia
| | - Jahir Orozco
- Max Planck Tandem Group in Nanobioengineering University of Antioquia Complejo Ruta N Calle 67, N° 52–20 050010 Medellín Colombia
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Rothhaas R, Chung S. Role of the Preoptic Area in Sleep and Thermoregulation. Front Neurosci 2021; 15:664781. [PMID: 34276287 PMCID: PMC8280336 DOI: 10.3389/fnins.2021.664781] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/28/2021] [Indexed: 12/18/2022] Open
Abstract
Sleep and body temperature are tightly interconnected in mammals: warming up our body helps to fall asleep and the body temperature in turn drops while falling asleep. The preoptic area of the hypothalamus (POA) serves as an essential brain region to coordinate sleep and body temperature. Understanding how these two behaviors are controlled within the POA requires the molecular identification of the involved circuits and mapping their local and brain-wide connectivity. Here, we review our current understanding of how sleep and body temperature are regulated with a focus on recently discovered sleep- and thermo-regulatory POA neurons. We further discuss unresolved key questions including the anatomical and functional overlap of sleep- and thermo-regulatory neurons, their pathways and the role of various signaling molecules. We suggest that analysis of genetically defined circuits will provide novel insights into the mechanisms underlying the coordinated regulation of sleep and body temperature in health and disease.
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Affiliation(s)
- Rebecca Rothhaas
- Department of Neuroscience, Perelman School of Medicine, Chronobiology and Sleep Institute, University of Pennsylvania, Philadelphia, PA, United States
| | - Shinjae Chung
- Department of Neuroscience, Perelman School of Medicine, Chronobiology and Sleep Institute, University of Pennsylvania, Philadelphia, PA, United States
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