Article
Biochemistry & Molecular Biology
Russell R. Fling, Timothy R. Zacharewski
Summary: TCDD-induced changes in gut microbiota composition increase levels of lactobacilli species and are associated with secondary bile acid metabolism.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Nutrition & Dietetics
Keisuke Satake, Takenobu Ishii, Taiki Morikawa, Teruo Sakamoto, Yasushi Nishii
Summary: Quercetin, a flavonoid with various pharmacological activities, has been found to prevent TCDD-induced cleft palate by inhibiting CYP1A1 through AhR. This study suggests the potential of quercetin as a preventive measure for cleft palate.
Article
Nutrition & Dietetics
Wurood Hantoosh Neamah, Alex Rutkovsky, Osama Abdullah, Kiesha Wilson, Ryan Bloomquist, Prakash Nagarkatti, Mitzi Nagarkatti
Summary: This study demonstrates that Resveratrol (RSV), an AhR antagonist, reduces the induction and function of murine myeloid-derived suppressor cells (MDSCs) induced by 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD). RSV reverses the effects of TCDD on macrophages and dendritic cells, as well as the upregulation of critical molecules involved in TCDD-mediated induction and immunosuppressive functions of MDSCs. RSV treatment decreases the energetic demands induced by TCDD. These findings suggest the potential use of RSV to attenuate the immunosuppressive properties of MDSCs.
Article
Plant Sciences
Han Li, Yun-hang Gao, Ling Song, Teng-fei Chen, Guang-ping Zhang, Zu-guang Ye, Yue Gao, Wang Huo
Summary: Ginsenoside Rg1 is a potential medication for protecting against TCDD-associated liver injury.
JOURNAL OF ETHNOPHARMACOLOGY
(2022)
Article
Reproductive Biology
Javier Esteban, Ismael Sanchez-Perez, Gerd Hamscher, Hanna M. Miettinen, Merja Korkalainen, Matti Viluksela, Raimo Pohjanvirta, Helen Hakansson
Summary: The study indicates that AHR and TCDD have significant effects on the retinoid system, with differences in impact based on sex among wild-type mice, and variations in concentrations of different retinoid forms in the liver, kidneys, and blood.
REPRODUCTIVE TOXICOLOGY
(2021)
Article
Toxicology
S. G. Rudyak, L. A. Usakin, E. A. Tverye, E. D. Robertson, A. A. Panteleyev
Summary: Aryl hydrocarbon receptor (AhR) expression and stability are influenced by AhR ligands. Treatment with TCDD, FICZ, and I3C caused a decrease in AhR expression. AhR degradation is regulated by proteasomal degradation and the presence of AhR antagonists, and requires the involvement of AhR dimerization partner ARNT. In addition, HDAC inhibition enhances AhR expression.
TOXICOLOGY LETTERS
(2023)
Article
Environmental Sciences
Michelle E. Kossack, Katherine E. Manz, Nathan R. Martin, Kurt D. Pennell, Jessica Plavicki
Summary: Dioxin and dioxin-like compounds are environmental contaminants that induce toxicity by binding to the aryl hydrocarbon receptor (AHR). The zebrafish model has been used to study developmental toxicity caused by exposure to AHR ligands such as dioxin. In this study, targeted gas chromatography (GC) and non-targeted liquid chromatography (LC) were used to quantify TCDD uptake, model its elimination dynamics, and determine its impact on the zebrafish metabolome. The results showed that environmentally relevant body burdens of TCDD were produced in zebrafish through different waterborne exposures, and TCDD exposure affected metabolic pathways associated with AHR signaling and brain development.
Review
Biochemistry & Molecular Biology
Charlotte Esser
Summary: Identifying historical trajectories is helpful in research to clarify important shifts in science. This review discusses the role of AHR in linking environmental pollution toxicity with healthy adaptive immune and skin responses, revealing opportunities for targeting AHR in treating various diseases.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Han-Bi Kim, Ji-Young Um, Bo-Young Chung, Jin-Cheol Kim, Seok-Young Kang, Chun-Wook Park, Hye-One Kim
Summary: The aryl hydrocarbon receptor (AhR) is crucial for the metabolism of xenobiotics and has been found to be associated with various diseases in different organs. Recent studies have shed light on its functions in chronic inflammatory skin diseases such as atopic dermatitis (AD) and psoriasis (PS), as well as its impact on the immune system of the skin. The therapeutic effects of AhR ligands have been demonstrated, but further research is needed to fully understand the roles of AhR in chronic inflammatory skin diseases.
Article
Immunology
Cassandra L. Houser, B. Paige Lawrence
Summary: This study demonstrates that activation of the aryl hydrocarbon receptor (AHR) reduces the frequency and differentiation of T follicular helper (Tfh) cells during viral infection. It also affects T cell-dependent B cell responses and alters the balance between Tfollicular regulatory (Tfr) cells and Tfh cells. These findings have important implications for understanding the role of environmental factors in immune defenses against viral pathogens.
JOURNAL OF IMMUNOLOGY
(2022)
Article
Environmental Sciences
Jyoti Bhuju, Kristin M. Olesen, Clarisse S. Muenyi, Tejesh S. Patel, Robert W. Read, Lauren Thompson, Omar Skalli, Qi Zheng, Elizabeth A. Grice, Carrie Hayes Sutter, Thomas R. Sutter
Summary: Exposure to TCDD during pregnancy and lactation in mice resulted in skin effects such as acanthosis and chloracne-like sebaceous gland hypoplasia, which were reversible and did not cause long-term immunosuppression. Additionally, increased expression of CYP1A1 and CYP1B1 in the skin of exposed mice was observed, with co-localization with progenitor cells and stem cell niches.
Review
Biochemistry & Molecular Biology
Antero Salminen
Summary: The antagonistic pleiotropy hypothesis explains the aging process by proposing that certain genes may have beneficial effects during development but deleterious properties in aging. The aryl hydrocarbon receptor (AhR) is involved in various age-related degenerative processes, as well as stem cell pluripotency, immune system regulation, and differentiation of peripheral tissues. However, AhR signaling can also promote cellular senescence, pathological processes, and disturb energy metabolism. The complex connections with major signaling pathways and epigenetic regulation play a crucial role in the antagonistic pleiotropy of AhR signaling.
CELLULAR AND MOLECULAR LIFE SCIENCES
(2022)
Review
Engineering, Environmental
Wanglong Zhang, Heidi Qunhui Xie, Yunping Li, Mingxi Zhou, Zhiguang Zhou, Renjun Wang, Mark E. Hahn, Bin Zhao
Summary: The aryl hydrocarbon receptor (AHR) is a transcription factor with diverse biological functions. While initial research focused on its role in regulating drug-metabolizing enzymes and mediating the toxicity of dioxins and related compounds, recent studies have discovered additional functions of AHR. The structural similarity of emerging DLCs to dioxins has led to the observation that AHR predominantly mediates the toxic effects of these compounds. Understanding the mechanisms and impacts of traditional and emerging DLCs is important for environmental science.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Review
Biochemistry & Molecular Biology
Heidi Qunhui Xie, Yongchao Ma, Hualing Fu, Tuan Xu, Yali Luo, Yiyun Liu, Yangsheng Chen, Li Xu, Yingjie Xia, Bin Zhao
Summary: Acetylcholinesterase (AChE) plays important roles in cholinergic neurotransmission and is widely recognized as a biomarker for monitoring pollution by organophosphate and carbamate pesticides. Dioxin, a persistent organic pollutant, affects the nervous system and has been linked to neurodegenerative diseases and neurodevelopmental disorders, mainly through its impact on AChE and cholinergic dysfunctions. The aryl hydrocarbon receptor (AhR)-dependent pathway is a key research focus in studying the mechanisms of dioxin-induced AChE dysregulation.
JOURNAL OF NEUROCHEMISTRY
(2021)
Article
Environmental Sciences
Michela Novelli, Pascale Beffy, Matilde Masini, Chiara Vantaggiato, Luisa Martino, Lorella Marselli, Piero Marchetti, Vincenzo De Tata
Summary: Exposure to environmental pollutant TCDD affects pancreatic islets, especially beta cells, leading to cell death, ultrastructural alterations, decreased insulin secretion, and changes in gene expression. TCDD exposure significantly reduces cell survival and insulin secretion, causes ultrastructural changes in beta cells, and alters gene expression profiles in isolated islets.
Article
Cell Biology
Hasan Alghetaa, Amira Mohammed, Muthanna Sultan, Philip Busbee, Angela Murphy, Saurabh Chatterjee, Mitzi Nagarkatti, Prakash Nagarkatti
JOURNAL OF CELLULAR AND MOLECULAR MEDICINE
(2018)
Article
Cell Biology
Haider Rasheed Alrafas, Philip B. Busbee, Mitzi Nagarkatti, Prakash S. Nagarkatti
JOURNAL OF LEUKOCYTE BIOLOGY
(2019)
Article
Immunology
Zinah Zamil Al-Ghezi, Philip Brandon Busbee, Hasan Alghetaa, Prakash S. Nagarkatti, Mitzi Nagarkatti
BRAIN BEHAVIOR AND IMMUNITY
(2019)
Article
Multidisciplinary Sciences
Kumaraswamy Naidu Chitrala, Xiaoming Yang, Brandon Busbee, Narendra P. Singh, Laura Bonati, Yongna Xing, Prakash Nagarkatti, Mitzi Nagarkatti
SCIENTIFIC REPORTS
(2019)
Article
Multidisciplinary Sciences
Sutapa Sarkar, Diana Kimono, Muayad Albadrani, Ratanesh K. Seth, Philip Busbee, Hasan Alghetaa, Dwayne E. Porter, Geoff I. Scott, Bryan Brooks, Mitzi Nagarkatti, Prakash Nagarkatti, Saurabh Chatterjee
SCIENTIFIC REPORTS
(2019)
Article
Immunology
Wurood Hantoosh Neamah, Narendra P. Singh, Hasan Alghetaa, Osama A. Abdulla, Saurabh Chatterjee, Philip B. Busbee, Mitzi Nagarkatti, Prakash Nagarkatti
JOURNAL OF IMMUNOLOGY
(2019)
Article
Food Science & Technology
Haider Rasheed Alrafas, Philip B. Busbee, Mitzi Nagarkatti, Prakash S. Nagarkatti
MOLECULAR NUTRITION & FOOD RESEARCH
(2020)
Article
Medicine, General & Internal
Haider Rasheed Alrafas, Philip Brandon Busbee, Kumaraswamy Naidu Chitrala, Mitzi Nagarkatti, Prakash Nagarkatti
JOURNAL OF CLINICAL MEDICINE
(2020)
Article
Biochemistry & Molecular Biology
Wurood Hantoosh Neamah, Philip Brandon Busbee, Hasan Alghetaa, Osama A. Abdulla, Mitzi Nagarkatti, Prakash Nagarkatti
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Article
Gastroenterology & Hepatology
William Becker, Haider Rasheed Alrafas, Philip B. Busbee, Michael D. Walla, Kiesha Wilson, Kathryn Miranda, Guoshuai Cai, Vasanta Putluri, Nagireddy Putluri, Mitzi Nagarkatti, Prakash S. Nagarkatti
Summary: The study highlights that THC can prevent colitis while the ameliorative effects of CBD on colitis are limited, even in combination with THC. THC increases colonic barrier integrity by promoting mucus, tight junction, and antimicrobial peptide production, specifically in the large intestine.
JOURNAL OF CROHNS & COLITIS
(2021)
Article
Cell Biology
Muthanna Sultan, Kiesha Wilson, Osama A. Abdulla, Philip Brandon Busbee, Alina Hall, Taylor Carter, Narendra Singh, Saurabh Chatterjee, Prakash Nagarkatti, Mitzi Nagarkatti
Summary: The study showed that treatment with anandamide (AEA) attenuated SEB-mediated ARDS by inducing AMPs, tight junction proteins, and short-chain fatty acids (SCFAs), which stabilized the gut-lung microbial axis, suppressed inflammation, and prevented dysbiosis in both the lungs and the gut.
Article
Multidisciplinary Sciences
Kathryn Miranda, William Becker, Philip B. Busbee, Nicholas Dopkins, Osama A. Abdulla, Yin Zhong, Jiajia Zhang, Mitzi Nagarkatti, Prakash S. Nagarkatti
Summary: This study investigates the role of CB1 in immune and non-immune cells during diet-induced obesity (DIO). The results show that CB1 in non-immune cells is necessary for induction of DIO, while CB1 in immune cells exacerbates DIO and leads to other metabolic abnormalities.
Article
Biochemistry & Molecular Biology
Marpe Bam, Xiaoming Yang, Brandon P. Busbee, Allison E. Aiello, Monica Uddin, Jay P. Ginsberg, Sandro Galea, Prakash S. Nagarkatti, Mitzi Nagarkatti
MOLECULAR MEDICINE
(2020)
Article
Medicine, Research & Experimental
Philip B. Busbee, Lorenzo Menzel, Haider Rasheed Alrafas, Nicholas Dopkins, William Becker, Kathryn Miranda, Chaunbing Tang, Saurabh Chatterjee, Udai P. Singh, Mitzi Nagarkatti, Prakash S. Nagarkatti