RESUMEN
Evidence of chronic, systemic, low levels of inflammation is present in several stress-related psychiatric conditions including schizophrenia, depression, and intermittent explosive disorder (IED). We analyzed leukocyte gene expression (mRNA) to quantify the activity of pro and anti-inflammatory signaling pathways. Work performed in non-aggressive populations has uncovered a Conserved Transcriptional Response to Adversity (CTRA) characterized by an upregulation of pro-inflammatory gene transcription in chronically stressed individuals. We used pathway-based bioinformatic analyses of genome-wide transcriptional profiles of peripheral blood leukocyte samples from IED study participants (N = 45) and controls [healthy (n = 45) and psychiatric (n = 34)], with analyses focusing on the pro-inflammatory transcription control pathway mediated by the NF-kB family of transcription factors (typically upregulated in CTRA) and the antiviral transcription control pathway mediated by anti-viral response (IRF) family transcription factors (typically downregulated in CTRA). Compared with both healthy and psychiatric controls, individuals with IED had upregulated transcriptional activity of the antiviral response (IRF), but no evidence of pro-inflammatory NF-kB activation. Analyses implicated CD4 + T cells, CD8 + T cells, and B lymphocytes in IED-related transcriptional alterations, but showed no significant indication of monocyte involvement. This suggests that the inflammatory profile of IED differs substantially from that observed previously in other stress-related disorders, and may involve a pathogen-driven adaptive immune etiology.
Asunto(s)
Trastornos Disruptivos, del Control de Impulso y de la Conducta , Leucocitos Mononucleares , Agresión/fisiología , Trastornos Disruptivos, del Control de Impulso y de la Conducta/genética , Expresión Génica , Humanos , FN-kappa B , Trastornos PsicofisiológicosRESUMEN
Previous research has linked perceived social isolation (loneliness) to reduced antiviral immunity, but the immunologic effects of the objective social isolation imposed by pandemic "shelter in place" (SIP) policies is unknown. We assessed the immunologic impact of SIP by relocating 21 adult male rhesus macaques from 2,000-m2 field cage communities of 70 to 132 other macaques to 2 wk of individual housing in indoor shelters. SIP was associated with 30% to 50% reductions in all circulating immune cell populations (lymphocytes, monocytes, and granulocytes), down-regulation of Type I interferon (IFN) antiviral gene expression, and a relative up-regulation of CD16- classical monocytes. These effects emerged within the first 48 h of SIP, persisted for at least 2 wk, and abated within 4 wk of return to social housing. A subsequent round of SIP in the presence of a novel juvenile macaque showed comparable reductions in circulating immune cell populations but reversal of Type I IFN reductions and classical monocyte increases observed during individual SIP. Analyses of lymph node tissues showed parallel up-regulation of Type I IFN genes and enhanced control of viral gene expression during juvenile-partnered SIP compared to isolated SIP. These results identify a significant adverse effect of SIP social isolation on antiviral immune regulation in both circulating immune cells and lymphoid tissues, and they suggest a potential behavioral strategy for ameliorating gene regulatory impacts (but not immune cell declines) by promoting prosocial engagement during SIP.
Asunto(s)
Antivirales/metabolismo , Cuidadores , Interferón Tipo I/genética , Aislamiento Social , Animales , Sistema Inmunológico/metabolismo , Interferón Tipo I/metabolismo , Tejido Linfoide/metabolismo , Macaca mulatta , MasculinoRESUMEN
OBJECTIVE: To determine the feasibility of pharmacologic beta-adrenergic blockade in women with newly diagnosed stage II-IV epithelial ovarian cancer (EOC) throughout primary treatment. METHODS: Patients initiated propranolol prior to beginning chemotherapy or surgery. Feasibility was assessed as proportion able to complete 6 chemotherapy cycles while on adrenergic suppression. Descriptive statistics summarized surveys, and paired changes were analyzed using signed rank tests. Random-intercept Tobit models examined immune response. RESULTS: Median age was 59.9; 88.5% were stage IIIC/IV; and 38.5% underwent primary debulking. Thirty-two patients were enrolled; 3 excluded because they never took propranolol; an additional 3 didn't meet inclusion criteria, leaving 26 evaluable. Eighteen of 26 (69%), 90% credible interval (CI) of 53-81%, completed 6 chemotherapy cycles plus propranolol (an 82% posterior probability that the true proportion of success is ≥60%). Among the 23 patients with baseline and six month follow up data, overall QOL, anxiety, and depression improved (Pâ¯<â¯0.05) and leukocyte expression of pro-inflammatory genes declined (Pâ¯=â¯0.03) after completion of therapy. Decrease from baseline of serum IL-6 and IL-8 preceded response to chemotherapy (Pâ¯<â¯0.0014). Change from baseline IL-10 preceded complete response. CONCLUSION: Use of propranolol during primary treatment of EOC is feasible and treatment resulted in decrease in markers of adrenergic stress response. In combination with chemotherapy, propranolol potentially results in improved QOL over baseline.
Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/administración & dosificación , Carcinoma Epitelial de Ovario/tratamiento farmacológico , Neoplasias Ováricas/tratamiento farmacológico , Propranolol/administración & dosificación , Antagonistas Adrenérgicos beta/administración & dosificación , Anciano , Carboplatino/administración & dosificación , Carcinoma Epitelial de Ovario/genética , Carcinoma Epitelial de Ovario/inmunología , Carcinoma Epitelial de Ovario/cirugía , Quimioterapia Adyuvante , Citocinas/sangre , Citocinas/genética , Citocinas/inmunología , Estudios de Factibilidad , Femenino , Expresión Génica/efectos de los fármacos , Expresión Génica/inmunología , Humanos , Leucocitos/efectos de los fármacos , Leucocitos/inmunología , Estudios Longitudinales , Persona de Mediana Edad , Terapia Neoadyuvante , Neoplasias Ováricas/genética , Neoplasias Ováricas/inmunología , Neoplasias Ováricas/cirugía , Paclitaxel/administración & dosificación , Proyectos Piloto , Estudios Prospectivos , Calidad de VidaRESUMEN
Our main objective of this study was to determine how Human Immunodeficiency Virus (HIV) avoids induction of the antiviral Type I Interferon (IFN) system. To limit viral infection, the innate immune system produces important antiviral cytokines such as the IFN. IFN set up a critical roadblock to virus infection by limiting further replication of a virus. Usually, IFN production is induced by the recognition of viral nucleic acids by innate immune receptors and subsequent downstream signaling. However, the importance of IFN in the defense against viruses has lead most pathogenic viruses to evolve strategies to inhibit host IFN induction or responses allowing for increased pathogenicity and persistence of the virus. While the adaptive immune responses to HIV infection have been extensively studied, less is known about the balance between induction and inhibition of innate immune defenses, including the antiviral IFN response, by HIV infection. Here we show that HIV infection of T cells does not induce significant IFN production even IFN I Interferon production. To explain this paradox, we screened HIV proteins and found that two HIV encoded proteins, Vpu and Nef, strongly antagonize IFN induction, with expression of these proteins leading to loss of expression of the innate immune viral RNA sensing adaptor protein, IPS-1 (IFN-ß promoter stimulator-1). We hypothesize that with lower levels of IPS-1 present, infected cells are defective in mounting antiviral responses allowing HIV to replicate without the normal antiviral actions of the host IFN response. Using cell lines as well as primary human derived cells, we show that HIV targeting of IPS-1 is key to limiting IFN induction. These findings describe how HIV infection modulates IFN induction providing insight into the mechanisms by which HIV establishes infection and persistence in a host.