RESUMO
Plasma cells (PC) are found in the CNS of multiple sclerosis (MS) patients, yet their source and role in MS remains unclear. We find that some PC in the CNS of mice with experimental autoimmune encephalomyelitis (EAE) originate in the gut and produce immunoglobulin A (IgA). Moreover, we show that IgA+ PC are dramatically reduced in the gut during EAE, and likewise, a reduction in IgA-bound fecal bacteria is seen in MS patients during disease relapse. Removal of plasmablast (PB) plus PC resulted in exacerbated EAE that was normalized by the introduction of gut-derived IgA+ PC. Furthermore, mice with an over-abundance of IgA+ PB and/or PC were specifically resistant to the effector stage of EAE, and expression of interleukin (IL)-10 by PB plus PC was necessary and sufficient to confer resistance. Our data show that IgA+ PB and/or PC mobilized from the gut play an unexpected role in suppressing neuroinflammation.
Assuntos
Imunoglobulina A/metabolismo , Interleucina-10/metabolismo , Intestinos/imunologia , Animais , Encefalomielite Autoimune Experimental/imunologia , Humanos , Imunoglobulina A/imunologia , Mucosa Intestinal/metabolismo , Camundongos , Camundongos Endogâmicos C57BL , Esclerose Múltipla/imunologia , Neuroimunomodulação/imunologia , Plasmócitos/metabolismoRESUMO
As a relatively new specialty with a minimally invasive nature, the field of interventional radiology is rapidly growing. Although the application of robotic systems in this field shows great promise, such as with increased precision, accuracy, and safety, as well as reduced radiation dose and potential for teleoperated procedures, the progression of these technologies has been slow. This is partly due to the complex equipment with complicated setup procedures, the disruption to theatre flow, the high costs, as well as some device limitations, such as lack of haptic feedback. To further assess these robotic technologies, more evidence of their performance and cost-effectiveness is needed before their widespread adoption within the field. In this review, we summarise the current progress of robotic systems that have been investigated for use in vascular and non-vascular interventions.
Assuntos
Procedimentos Endovasculares , Procedimentos Cirúrgicos Robóticos , Robótica , Cirurgia Assistida por Computador , Humanos , Radiologia Intervencionista , Robótica/métodos , Procedimentos Endovasculares/métodos , Cirurgia Assistida por Computador/métodos , Procedimentos Cirúrgicos Robóticos/métodosRESUMO
Non-functioning pituitary adenomas (NFPAs) are a group of pituitary tumors lacking manifestations linked to high hormone production, such as acromegaly and Cushing's syndrome. NFPA carcinogenesis depends on several molecular players. Long non-coding RNAs (lncRNAs) are a class of molecular players whose role in tumorigenesis has just recently been recognized. In the current study, we appraised expressions of 5 lncRNAs, namely FGD5-AS1, ATP6V0E2-AS1, ARHGAP5-AS1, WWC2-AS2 and EPB41L4A-AS1 in NFPAs versus their corresponding non-tumoral samples. Expressions of ATP6V0E2-AS1, EPB41L4A-AS1, FGD5-AS1 and WWC2-AS2 were significantly increased in NFPA samples compared with adjacent non-tumoral samples (P values = 0.037, 0.007, 0.008 and 0.03, respectively). However, expression of ARHGAP5-AS1 was not different between NFPA samples and controls (P value = 0.62). EPB41L4A-AS1 and FGD5-AS1 could discriminate between NFPA samples and adjacent non-tumoral samples (P values = 0.03 and 0.04, respectively). However, the AUC values were not appropriate. There was a significant positive association between age of NFPA patients and invasiveness of NFPA (χ2 = 4.24, P value = 0.039). Moreover, there was a significant positive association between diseases duration and CSF leak (χ2 = 11.4, p value = 0.023). Finally, there was a significant positive association between tumor size and Knosp classification (χ2 = 11.5, p value = 0.02) and invasiveness of NFPA (χ2 = 6.12, p value = 0.04). The current study provides information about dysregulation of lncRNAs in NFPAs and warrants additional studies in this field.
Assuntos
Adenoma , Neoplasias Hipofisárias , RNA Longo não Codificante , Humanos , Neoplasias Hipofisárias/patologia , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Adenoma/patologiaRESUMO
Background: Pulmonary hypertension (PH) is a hemodynamic and pathophysiological disease defined by a mean pulmonary artery pressure of ≥20 mm Hg. Pulmonary hypertension severity and prognosis play an essential role in the management of these patients. The aim of this study was to evaluate the prognostic value of platelet to lymphocyte ratio (PLR) and neutrophil to lymphocyte ratio (NLR) in patients with PH referred to Masih Daneshvari Hospital, Tehran, Iran. Materials and Methods: A total of 61 patients with PH referred to Masih Daneshvari Hospital in Tehran were enrolled. Patients' information such as age, sex, type of PH, echocardiographic data, and blood cell count, including platelet, lymphocyte, and neutrophil count, hemoglobin, and RDW, were collected in each follow-up. Results: Out of 61 patients with PH, 27 (44.3%) were male, and 34 (55.7%) were female. The mean age of the patients was 43.19 ± 2.25 years. Our results showed that during hospitalization, PLR decreased from 13.2 to 9.7, and NLR also decreased from 4.49 to 3.08. Neither PLR nor NLR was associated with gender. However, both PLR and NLR showed a significant difference between deceased vs. discharged patients and were significantly lower in the patients who died. Conclusion: Both PLR and NLR decreased during hospitalization in patients with PH, and this decrease was greater in the patients who died, suggesting these indicators as potential prognostic markers for the disease.