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Maldonado-García JL, Alvarez-Herrera S, Pérez-Sánchez G, Becerril-Villanueva E, Pavón L, Tesoro-Cruz E, Girón-Pérez MI, Hurtado-Alvarado G, Damián-Morales G, López-Santiago R, Moreno-Lafont MC. Concomitant Treatment with Doxycycline and Rifampicin in Balb/c Mice Infected with Brucella abortus 2308 Fails to Reduce Inflammation and Motor Disability. Pharmaceuticals (Basel) 2024; 17:638. [PMID: 38794208 PMCID: PMC11123987 DOI: 10.3390/ph17050638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/26/2024] Open
Abstract
Brucellosis is an infection widely distributed around the world, and in some countries it is considered a public health problem. Brucellosis causes insidious symptoms that make it difficult to diagnose. Infection can also trigger chronic pain and neuropsychiatric complications. Antibiotics are not always effective to eradicate infection, contributing to chronicity. We aimed to investigate the effects of antibiotic treatment on proinflammatory cytokines, neurotransmitters, corticosterone, and behavior in a murine model of infecrion of B. abortus strain 2308. Four study groups were created: (a) control; (b) antibiotic control; (c) infected with B. abortus 2308; and (d) infected and treated with rifampicin and doxycycline. We determined B. abortus 2308 colony-forming units (CFUs), the count of dendritic cells, and macrophages in the spleen; serum levels of cytokines and corticosterone; levels of serotonin, dopamine, epinephrine, and norepinephrine in the brain; and equilibrium, physical strength, anxiety, and hopelessness tests. The infected and treated mice group was compared with the control and infected mice to assess whether treatment is sufficient to recover neuroimmunoendocrine parameters. Our results showed that despite the treatment of brucellosis with rifampicin and doxycycline, antibiotic-treated mice showed a persistence of B. abortus 2308 CFUs, an increased count in macrophage number, and higher circulating levels of corticosterone. Furthermore, the levels of IL-12, IL-6, and TNF-α remained higher. We found a decrease in muscular strength and equilibrium concomitant to changes in neurotransmitters in the hippocampus, cerebellum, and frontal cortex. Our data suggest that the remaining bacterial load after antibiotic administration favors inflammatory, neurochemical, and behavioral alterations, partly explaining the widespread and paradoxical symptomatology experienced by patients with chronic brucellosis.
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Affiliation(s)
- José Luis Maldonado-García
- Laboratorio de Inmunología Celular, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (J.L.M.-G.); (G.D.-M.); (R.L.-S.)
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04360, Mexico
| | - Samantha Alvarez-Herrera
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico City 14370, Mexico; (S.A.-H.); (G.P.-S.); (E.B.-V.)
| | - Gilberto Pérez-Sánchez
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico City 14370, Mexico; (S.A.-H.); (G.P.-S.); (E.B.-V.)
| | - Enrique Becerril-Villanueva
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico City 14370, Mexico; (S.A.-H.); (G.P.-S.); (E.B.-V.)
| | - Lenin Pavón
- Laboratorio de Psicoinmunología, Dirección de Investigaciones en Neurociencias del Instituto Nacional de Psiquiatría Ramón de la Fuente, Mexico City 14370, Mexico; (S.A.-H.); (G.P.-S.); (E.B.-V.)
| | - Emiliano Tesoro-Cruz
- Unidad de Investigación Biomédica en Inmunología e Infectología, Hospital de Infectología, Centro Médico Nacional “La Raza”, IMSS, Mexico City 02990, Mexico;
| | | | - Gabriela Hurtado-Alvarado
- Departamento de Anatomía, Facultad de Medicina, Universidad Nacional Autónoma de México, Mexico City 04360, Mexico;
| | - Gabriela Damián-Morales
- Laboratorio de Inmunología Celular, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (J.L.M.-G.); (G.D.-M.); (R.L.-S.)
| | - Rubén López-Santiago
- Laboratorio de Inmunología Celular, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (J.L.M.-G.); (G.D.-M.); (R.L.-S.)
| | - Martha C. Moreno-Lafont
- Laboratorio de Inmunología Celular, Departamento de Inmunología, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Mexico City 11340, Mexico; (J.L.M.-G.); (G.D.-M.); (R.L.-S.)
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Ahmed ME, Mohamed EI, Ramadan KM, Elsheikh HEM, El-Said BM, Shehata AA. Evaluation of the immunization of camels with Brucella abortus vaccine (RB51) in Egypt. Open Vet J 2024; 14:19-24. [PMID: 38633148 PMCID: PMC11018449 DOI: 10.5455/ovj.2024.v14.i1.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/15/2023] [Indexed: 04/19/2024] Open
Abstract
Background Brucellosis is a highly contagious zoonotic disease caused by an intracellular facultative microorganism termed Brucella spp. Control of brucellosis depends on test and slaughter policy as well as vaccination programs. Aim Estimation of the cell-mediated immunity (CMI) [total leukocytic count (TLC), phagocytic activity, phagocytic index, interleukin 6 (IL-6), and tumor necrosis factor-alpha (TNF-α)] in camels after vaccination with RB51 using real-time polymerase chain reaction (PCR). Methods A total of eight camels were grouped into two groups as follows: group (A): vaccinated with RB51 vaccine [1 dose/2 ml S/C (3 × 1010 CFU)] and group (B): control group. IL-6 and TNF-α were used for estimation of the CMI using real-time PCR on serum samples that were collected at 0, 7, 14, 21, 28, and 60 days after vaccination from each group. In addition, TLC, phagocytic activity, and phagocytic index were evaluated on heparinized blood samples at 0 and 60 days post-vaccination. Results RB51 vaccine provides a protective immune response which progressively increases from the first week to 60 days after vaccination. Moreover, the levels of TNF-α and IL-6 differed between camels in the vaccinated group. Conclusion Vaccination of camels with RB51 vaccine (with dose 3 × 1010 CFU) could induce good protective immune responses and this immunological response will be a good indication for a safe field vaccine that can be used for the control of camel brucellosis.
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Affiliation(s)
- Mousa E. Ahmed
- Zagazig Provincial Laboratory, Animal Health Research Institute, Zagazig, Egypt
| | - Eisa I. Mohamed
- Department of Animal Medicine, Infectious Diseases, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Khoudair M. Ramadan
- Brucellosis Research Department, Animal Health Research Institute (AHRI), Giza, Egypt
| | - Hend E. M. Elsheikh
- Department of Animal Medicine, Infectious Diseases, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Basma M. El-Said
- Department of Animal Medicine, Internal Medicine, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ayman A. Shehata
- Department of Animal Medicine, Infectious Diseases, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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Ansari AZ, Bhatia NY, Gharat SA, Godad AP, Doshi GM. Exploring Cytokines as Potential Target in Peptic Ulcer Disease: A Systematic Update. Endocr Metab Immune Disord Drug Targets 2023; 23:21-34. [PMID: 36043736 DOI: 10.2174/1871530322666220829142124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 06/06/2022] [Accepted: 06/15/2022] [Indexed: 11/22/2022]
Abstract
Peptic ulcer disease (PUD) is a widespread condition that affects millions of people each year, with an incidence rate of 0.1%-1.5%, and has a significant impact on human health. A range of stimuli, such as Helicobacter pylori, non-steroidal anti-inflammatory drugs, hyperacidity, stress, alcohol, smoking, and idiopathic disease states, can produce a sore in the gastrointestinal mucosal layer. For individuals infected with H. pylori, 2%-3% remain asymptomatic throughout their life. Although PUD treatments are available, genetic variations occurring in individuals because of geographical dissimilarity and antibiotic resistance pose limitations. Specifically, inflammatory cytokine gene polymorphisms have received immense attention in recent years because they appear to affect the severity and duration of stomach inflammation, which is induced by H. pylori infection, contributing to the initiation of PUD. In such a context, in-depth knowledge of interleukins may aid in the discovery of new targets and provide precautionary approaches for the treatment of PUD. This review aims to give insights into the importance of several interleukins that cognate with PUD and contribute to ulcer progression or healing by activating or dampening the host immunity. Furthermore, the available targets with clinical evidence have been explored in this review.
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Affiliation(s)
- Alveera Zubair Ansari
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, V. M. Road, Vile Parle (W), Mumbai, India
| | - Nirav Yogesh Bhatia
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, V. M. Road, Vile Parle (W), Mumbai, India
| | - Sankalp Ashok Gharat
- Department of Pharmaceutics, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, V. M. Road, Vile Parle (W), Mumbai, India
| | - Angel Pavalu Godad
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, V. M. Road, Vile Parle (W), Mumbai, India
| | - Gaurav Mahesh Doshi
- Department of Pharmacology, SVKM's Dr. Bhanuben Nanavati College of Pharmacy, V. M. Road, Vile Parle (W), Mumbai, India
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Majerczyk D, Ayad E, Brewton K, Saing P, Hart P. Systemic maternal inflammation promotes ASD via IL-6 and IFN-γ. Biosci Rep 2022; 42:BSR20220713. [PMID: 36300375 PMCID: PMC9670245 DOI: 10.1042/bsr20220713] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 09/30/2022] [Accepted: 10/26/2022] [Indexed: 07/25/2023] Open
Abstract
Autism spectrum disorder (ASD) is a neurological disorder that manifests during early development, impacting individuals through their ways of communicating, social behaviors, and their ability to perform day-to-day activities. There have been different proposed mechanisms on how ASD precipitates within a patient, one of which being the impact cytokines have on fetal development once a mother's immune system has been activated (referred to as maternal immune activation, MIA). The occurrence of ASD has long been associated with elevated levels of several cytokines, including interleukin-6 (IL-6) and interferon gamma (IFN-γ). These proinflammatory cytokines can achieve high systemic levels in response to immune activating pathogens from various extrinsic sources. Transfer of cytokines such as IL-6 across the placental barrier allows accumulation in the fetus, potentially inducing neuroinflammation and consequently altering neurodevelopmental processes. Individuals who have been later diagnosed with ASD have been observed to have elevated levels of IL-6 and other proinflammatory cytokines during gestation. Moreover, the outcome of MIA has been associated with neurological effects such as impaired social interaction and an increase in repetitive behavior in animal models, supporting a mechanistic link between gestational inflammation and development of ASD-like characteristics. The present review attempts to provide a concise overview of the available preclinical and clinical data that suggest cross-talk between IL-6 and IFN-γ through both extrinsic and intrinsic factors as a central mechanism of MIA that may promote the development of ASD.
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Affiliation(s)
- Daniel Majerczyk
- College of Science, Health and Pharmacy, Roosevelt University, Illinois 60173, U.S.A
- Loyola Medicine, Berwyn, Illinois 60402, U.S.A
| | - Elizabeth G. Ayad
- College of Science, Health and Pharmacy, Roosevelt University, Illinois 60173, U.S.A
| | - Kari L. Brewton
- College of Science, Health and Pharmacy, Roosevelt University, Illinois 60173, U.S.A
| | - Pichrasmei Saing
- College of Science, Health and Pharmacy, Roosevelt University, Illinois 60173, U.S.A
| | - Peter C. Hart
- College of Science, Health and Pharmacy, Roosevelt University, Illinois 60173, U.S.A
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Zhang Z, Zhang X, Chen X, Cui X, Cai M, Yang L, Zhang Y. Clinical Features of Human Brucellosis and Risk Factors for Focal Complications: A Retrospective Analysis in a Tertiary-Care Hospital in Beijing, China. Int J Gen Med 2022; 15:7373-7382. [PMID: 36157291 PMCID: PMC9507445 DOI: 10.2147/ijgm.s380328] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 08/29/2022] [Indexed: 01/18/2023] Open
Abstract
Purpose Brucellosis is an ongoing zoonotic disease in China, but there are few data in Beijing. This study was designed to illustrate clinical characteristics of patients with brucellosis in Beijing, China and explore the risk factors for focal brucellosis. Patients and Methods Data of patients with brucellosis were retrospectively collected from the patients’ electronic medical records in Beijing Youan Hospital during 2010 to 2021, including epidemiological, demographic and clinical features. Risk factors for focal brucellosis were identified by multivariable logistic regression models. Results A total of 197 patients were included in the study, with 165 (83.8%) cases in acute phase and 32 (16.2%) cases in chronic phase. Patients in acute phase were more likely to have splenomegaly (24.2% vs 3.1%, p=0.007) than those in chronic phase, but had less arthralgia (62.4% vs 81.3%, p=0.040). The median level of alanine aminotransferase (36.9 vs 20.7, p=0.001) was higher in patients at acute stage than those at chronic stage. Of all the patients, 76 (38.6%) were reported with focal complications, including 16 (8.1%) peripheral arthritis, 36 (18.3%) spondylitis, 17 (8.6%) epididymoorchitis, 8 (4.1%) meningitis and 3 (1.3%) endocarditis. Additionally, male (OR 2.76, 95% CI 1.15–6.64, p = 0.023), arthralgia (OR 6.23, 95% CI 2.36–16.43, p < 0.001) and higher level of platelets (OR 1.01, 95% CI 1.00–1.01, p < 0.001) were the independent risk factors for focal brucellosis. Conclusion The control of human brucellosis still cannot be ignored due to the re-emerging cases in Beijing, which are more likely to present splenomegaly and abnormal liver function in acute phase. Moreover, male, arthralgia and high level of platelets were the independent risk factors for focal brucellosis.
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Affiliation(s)
- Zhili Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Xin Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Xue Chen
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Xiao Cui
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Miaotian Cai
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Liu Yang
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
| | - Yulin Zhang
- Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
- Beijing Institute of Hepatology, Beijing Youan Hospital, Capital Medical University, Beijing, People’s Republic of China
- Correspondence: Yulin Zhang, Department of Respiratory and Critical Care Medicine, Beijing Youan Hospital, Capital Medical University, Beijing, 100069, People’s Republic of China, Tel +86 10-83997143, Fax +86 10-63293371, Email
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Zhu Y, Shi L, Zeng Y, Piao D, Xie Y, Du J, Gao M, Gao W, Tian J, Yue J, Li M, Guo X, Yao Y, Kang Y. Key immunity characteristics of diverse stages of brucellosis in rural population from Inner Mongolia, China. Infect Dis Poverty 2022; 11:63. [PMID: 35659087 PMCID: PMC9167523 DOI: 10.1186/s40249-022-00989-7] [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: 03/02/2022] [Accepted: 05/16/2022] [Indexed: 01/18/2023] Open
Abstract
Background Brucellosis poses a serious threat to human and animal health, particularly in developing countries such as China. The Inner Mongolia Autonomous Region is one of the most severely brucellosis-endemic provinces in China. Currently, the host immune responses functioning to control Brucella infection and development remain poorly understood. The aim of this study is to further clarify the key immunity characteristics of diverse stages of brucellosis in Inner Mongolia.
Methods We collected a total of 733 blood samples from acute (n = 137), chronic (n = 316), inapparent (n = 35), recovery (n = 99), and healthy (n = 146) groups from the rural community of Inner Mongolia between 2014 and 2015. The proportions of CD4+, CD8+, Th1, Th2, and Th17 T cells in peripheral blood and the expression of TLR2 and TLR4 in lymphocytes, monocytes and granulocytes were examined using flow cytometry analysis. The differences among the five groups were compared using one-way ANOVA and the Kruskal–Wallis method, respectively.
Results Our results revealed that the proportions of CD4+ and CD8+ T cells were significantly different among the acute, chronic, recovery, and healthy control groups (P < 0.05), with lower proportions of CD4+ T cells and a higher proportion of CD8+ T cells in the acute, chronic, and recovery groups. The proportion of Th1 cells in the acute, chronic, and inapparent groups was higher than that in the healthy and recovery groups; however, there was no significant difference between patients and healthy individuals (P > 0.05). The proportion of Th2 lymphocytes was significantly higher in the acute and healthy groups than in the inapparent group (P < 0.05). The proportion of Th17 cells in the acute group was significantly higher than that in the healthy control, chronic, and inapparent groups (P < 0.05). Finally, the highest expression of TLR4 in lymphocytes, monocytes and granulocytes was observed in the recovery group, and this was followed by the acute, chronic, healthy control, and inapparent groups. There was a significant difference between the recovery group and the other groups, except for the acute group (P < 0.05). Moreover, a correlation in TLR4 expression was observed in lymphocytes, monocytes and granulocytes among the five groups (r > 0.5), except for the inapparent group between lymphocytes and granulocytes (r = 0.34). Conclusions Two key factors (CD8+ T cells and TLR4) in human immune profiles may closely correlate with the progression of brucellosis. The detailed function of TLR4 in the context of a greater number of cell types or tissues in human or animal brucellosis and in larger samples should be further explored in the future. Graphical Abstract ![]()
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Affiliation(s)
- Yongzhang Zhu
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - Li Shi
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming, China
| | - Yige Zeng
- Department of Biological Science, Xi'an Jiaotong-Liverpool University, Suzhou, China
| | - Dongri Piao
- State Key Laboratory for Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, National Institute for Communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | - Yingbo Xie
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Juan Du
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Meng Gao
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Wei Gao
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Junli Tian
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Jun Yue
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China
| | - Min Li
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China
| | - XiaoKui Guo
- School of Global Health, Chinese Center for Tropical Diseases Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China. .,Key Laboratory of Parasite and Vector Biology, Ministry of Health, Shanghai, China.
| | - Yufeng Yao
- Department of Immunogenetics, Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College, Kunming, China.
| | - YaoXia Kang
- Baotou Municipal Center for Disease Control and Prevention, Baotou, Inner Mongolia, China. .,Inner Mongolia Autonomous Region Comprehensive Center for Disease Control and Prevention, Hohhot, Inner Mongolia, China.
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Tang Y, Ma C, Sun H, Yang S, Yu F, Li X, Wang L. Serum Levels of Seven General Cytokines in Acute Brucellosis Before and After Treatment. Infect Drug Resist 2021; 14:5501-5510. [PMID: 34955644 PMCID: PMC8694408 DOI: 10.2147/idr.s341331] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/02/2021] [Indexed: 01/02/2023] Open
Abstract
Purpose Human brucellosis is the most common bacterial zoonosis globally that poses a severe health threat. Despite the availability of antibiotic therapy for human brucellosis, its tendencies of chronicity and persistence may lead to severe debilitating and disabling conditions in patients. Comprehensive understanding of the immune response in brucellosis will be helpful in improving the treatment strategies. In this study, we measured serum levels of T helper cell type 1 (Th1), Th2, and Th17 cytokines in patients with acute brucellosis before and after treatment. Patients and Methods Overall, 30 patients with acute brucellosis from the Beijing Di Tan Hospital and 26 healthy controls were enrolled in this study. All the patients received a 6-week therapy regimen comprising ceftriaxone, doxycycline, and rifampicin. Serum samples were collected from patients with acute Brucella infection and healthy controls before and after treatment. Serum seven cytokine levels of Th1 (IL-2, IFN-γ, and TNF-α), Th2 (IL-4, IL-6, IL-10), and Th17 (IL-17A) were measured using cytometric bead array. Results In patients with acute infection, the IL-2, IFN-γ, and IL-10 levels were significantly increased compared with those in healthy controls (P < 0.001). After treatment, IL-2, IFN-γ, and IL-10 levels significantly decreased (P < 0.05) and the TNF-α level significantly increased compared with the corresponding baseline levels and those in healthy controls (P < 0.05). Furthermore, the IFN-γ, IL-4, and IL-10 levels were higher in patients after treatment than in healthy controls (P < 0.05). IL-2 and IL-6 levels exhibited a positive correlation with the C-reactive protein (CRP) level in acute brucellosis (P < 0.05). Conclusion Levels of most serum Th1 and Th2 cytokines were simultaneously increased in acute infection, followed by reduction in the corresponding cytokine levels and residual cytokine response during treatment. This residual immune response could represent a therapeutic opportunity that may improve the long-term clinical outcomes in patients with acute brucellosis after treatment.
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Affiliation(s)
- Yunxia Tang
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
| | - Chenjie Ma
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
| | - Huali Sun
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Siyuan Yang
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
| | - Fengting Yu
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
| | - Xingwang Li
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
| | - Linghang Wang
- Beijing Ditan Hospital, Capital Medical University, Beijing, People's Republic of China.,Clinical Center for HIV/AIDS, Capital Medical University, Beijing, People's Republic of China
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Sun HL, Du XF, Tang YX, Li GQ, Yang SY, Wang LH, Li XW, Ma CJ, Jiang RM. Impact of immune checkpoint molecules on FoxP3 + Treg cells and related cytokines in patients with acute and chronic brucellosis. BMC Infect Dis 2021; 21:1025. [PMID: 34592958 PMCID: PMC8482665 DOI: 10.1186/s12879-021-06730-3] [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: 05/03/2021] [Accepted: 07/26/2021] [Indexed: 12/13/2022] Open
Abstract
Background The immunoregulatory functions of regulatory T cells (Tregs) in the development and progression of some chronic infectious diseases are mediated by immune checkpoint molecules and immunosuppressive cytokines. However, little is known about the immunosuppressive functions of Tregs in human brucellosis, which is a major burden in low-income countries. In this study, expressions of immune checkpoint molecules and Treg-related cytokines in patients with acute and chronic Brucella infection were evaluated to explore their impact at different stages of infection. Methods Forty patients with acute brucellosis and 19 patients with chronic brucellosis admitted to the Third People’s Hospital of Linfen in Shanxi Province between August 2016 and November 2017 were enrolled. Serum and peripheral blood mononuclear cells were isolated from patients before antibiotic treatment and from 30 healthy subjects. The frequency of Tregs (CD4+ CD25+ FoxP3+ T cells) and expression of CTLA-4, GITR, and PD-1 on Treg cells were detected by flow cytometry. Levels of Treg-related cytokines, including IL-35, TGF-β1, and IL-10, were measured by customised multiplex cytokine assays using the Luminex platform. Results The frequency of Tregs was higher in chronic patients than in healthy controls (P = 0.026) and acute patients (P = 0.042); The frequency of CTLA-4+ Tregs in chronic patients was significantly higher than that in healthy controls (P = 0.011). The frequencies of GITR+ and PD-1+ Tregs were significantly higher in acute and chronic patients than in healthy controls (P < 0.05), with no significant difference between the acute and chronic groups (all P > 0.05). Serum TGF-β1 levels were higher in chronic patients (P = 0.029) and serum IL-10 levels were higher in acute patients (P = 0.033) than in healthy controls. We detected weak correlations between serum TGF-β1 levels and the frequencies of Tregs (R = 0.309, P = 0.031) and CTLA-4+ Tregs (R = 0.302, P = 0.035). Conclusions Treg cell immunity is involved in the chronicity of Brucella infection and indicates the implication of Tregs in the prognosis of brucellosis. CTLA-4 and TGF-β1 may contribute to Tregs-mediated immunosuppression in the chronic infection stage of a Brucella infection.
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Affiliation(s)
- Hua-Li Sun
- Department of Infectious Diseases, The Affiliated Hospital of Qingdao University, Qingdao, Shandong, China
| | - Xiu-Fang Du
- Department of Infectious Diseases, The Third People's Hospital of Linfen City, Linfen, Shanxi, China
| | - Yun-Xia Tang
- The Laboratory of Infectious Diseases Centre, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Guo-Qiang Li
- Department of Laboratory Medicine, The Third People's Hospital of Linfen City, Linfen, Shanxi, China
| | - Si-Yuan Yang
- The Laboratory of Infectious Diseases Centre, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Ling-Hang Wang
- The Laboratory of Infectious Diseases Centre, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Xing-Wang Li
- Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China
| | - Cheng-Jie Ma
- The Laboratory of Infectious Diseases Centre, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
| | - Rong-Meng Jiang
- Center for Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China.
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Guimarães ES, Martins JM, Gomes MTR, Cerqueira DM, Oliveira SC. Lack of Interleukin-6 Affects IFN-γ and TNF-α Production and Early In Vivo Control of Brucella abortus Infection. Pathogens 2020; 9:pathogens9121040. [PMID: 33322581 PMCID: PMC7764695 DOI: 10.3390/pathogens9121040] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 12/20/2022] Open
Abstract
Interleukin-6 (IL-6) is a pleiotropic cytokine promptly produced in response to infections, which contributes to host defense through the stimulation of acute phase immune responses. Brucella abortus is an intracellular bacterium that causes chronic disease in humans and domestic animals and triggers a robust immune response, characterized by the production of inflammatory cytokines. However, the mechanisms of IL-6-related immune responses in the context of Brucella infections are not completely understood. In this report, we describe an increased susceptibility of IL-6 knockout (KO) mice in the early phase of Brucella infection. Furthermore, we demonstrate that IL-6 is required for interferon (IFN)-γ and tumor necrosis factor (TNF)-α induction by infected splenocytes, indicating a protective role for IL-6 against B. abortus that parallels with Th1 type of immune response. Additionally, IL-6 KO mice exhibited reduced splenomegaly during the early phase of the infection. Corroborating this result, IL-6 KO mice displayed reduced numbers of macrophages, dendritic cells, and neutrophils in the spleen and reduced myeloperoxidase activity in the liver compared to wild-type infected mice. However, we demonstrate that IL-6 is not involved in B. abortus intracellular restriction in mouse macrophages. Taken together, our findings demonstrate that IL-6 contributes to host resistance during the early phase of B. abortus infection in vivo, and suggest that its protective role maybe partially mediated by proinflammatory immune responses and immune cell recruitment.
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Affiliation(s)
- Erika S. Guimarães
- Department of Genetics, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil;
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil; (J.M.M.); (M.T.R.G.); (D.M.C.)
| | - Jéssica M. Martins
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil; (J.M.M.); (M.T.R.G.); (D.M.C.)
| | - Marco Túlio R. Gomes
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil; (J.M.M.); (M.T.R.G.); (D.M.C.)
| | - Daiane M. Cerqueira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil; (J.M.M.); (M.T.R.G.); (D.M.C.)
| | - Sergio C. Oliveira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte 31270-901, Brazil; (J.M.M.); (M.T.R.G.); (D.M.C.)
- Correspondence:
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