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1.
J Infect Dis ; 2024 Jun 29.
Artículo en Inglés | MEDLINE | ID: mdl-38942608

RESUMEN

Immunomodulation enhances parasite fitness by reducing inflammation-induced morbidity in the mammalian host, as well as by attenuating parasite-targeting immune responses. Using a whole proteome differential screening method, we identified Schistosoma japonicum Helminth Defense Molecule (SjHDM-1) as a target of antibodies expressed by S. japonicum resistant, but not susceptible, individuals. In a longitudinal cohort study (N=644) conducted in a S. japonicum endemic region of the Philippines, antibody levels to SjHDM-1 did not predict resistance to reinfection but were associated with increased measures of inflammation. Individuals with high levels of anti-SjHDM-1 IgG had higher levels of C-reactive protein compared to individuals with low anti-SjHDM-1. High anti-SjHDM-1 IgG responses were also associated with reduced biomarkers of nutritional status (albumin), as well as decreased anthropometric measures of nutritional status (WAZ and HAZ) and increased measures of hepatomegaly. Our results suggest that anti-SjHDM-1 responses inhibit the immunomodulatory function of SjHDM-1, resulting in increased morbidity.

2.
Arch Microbiol ; 206(5): 205, 2024 Apr 04.
Artículo en Inglés | MEDLINE | ID: mdl-38573383

RESUMEN

Honeybees are vital for global crop pollination, making indispensable contributions to agricultural productivity. However, these vital insects are currently facing escalating colony losses on a global scale, primarily attributed to parasitic and pathogenic attacks. The prevalent response to combat these infections may involve the use of antibiotics. Nevertheless, the application of antibiotics raises concerns regarding potential adverse effects such as antibiotic resistance and imbalances in the gut microbiota of bees. In response to these challenges, this study reviews the utilization of a probiotic-supplemented pollen substitute diet to promote honeybee gut health, enhance immunity, and overall well-being. We systematically explore various probiotic strains and their impacts on critical parameters, including survival rate, colony strength, honey and royal jelly production, and the immune response of bees. By doing so, we emphasize the significance of maintaining a balanced gut microbial community in honeybees. The review also scrutinizes the factors influencing the gut microbial communities of bees, elucidates the consequences of dysbiosis, and evaluates the potential of probiotics to mitigate these challenges. Additionally, it delineates different delivery mechanisms for probiotic supplementation and elucidates their positive effects on diverse health parameters of honeybees. Given the alarming decline in honeybee populations and the consequential threat to global food security, this study provides valuable insights into sustainable practices aimed at supporting honeybee populations and enhancing agricultural productivity.


Asunto(s)
Apicultura , Probióticos , Abejas , Animales , Agricultura , Antibacterianos , Disbiosis
3.
Fish Shellfish Immunol ; 144: 109284, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38092092

RESUMEN

Micropterus salmoides rhabdovirus (MSRV) is a significant viral pathogen in largemouth bass aquaculture, causing substantial annual economic losses. However, effective prevention methods remain elusive for various reasons. Medicinal plant extracts have emerged as valuable tools in preventing and managing aquatic animal diseases. Thus, the search for immunomodulators with straightforward, safe structures in plant extracts is imperative to ensure the continued health and growth of the largemouth bass industry. In our research, we employed epithelioma papulosum cyprinid (EPC) cells and largemouth bass as models to assess the anti-MSRV properties and immunomodulatory effects of ten plant-derived bioactive compounds. Among them, rhein demonstrated noteworthy potential, exhibiting a 75 % reduction in viral replication in vitro at a concentration of 50 mg/L. Furthermore, rhein pre-treatment significantly inhibited MSRV genome replication in EPC cells, with the highest inhibition rate reaching 64.8 % after 24 h, underscoring rhein's preventive impact against MSRV. Likewise, rhein displayed remarkable therapeutic effects on EPC cells during the early stages of MSRV infection, achieving a maximum inhibition rate of 85.6 % in viral replication. Subsequent investigations unveiled that rhein, with its consistent activity, effectively mitigated cytopathic effects (CPE) and nuclear damage induced by MSRV infection. Moreover, it restrained mitochondrial membrane depolarization and reduced the apoptosis rate by 38.8 %. In vivo experiments reinforced these findings, demonstrating that intraperitoneal injection of rhein enhanced the expression levels of immune related genes in multiple organs, hindered virus replication, and curtailed the mortality rate of MSRV-infected largemouth bass by 29 %. Collectively, our study endorses the utility of rhein as an immunomodulator to combat MSRV infections in largemouth bass. This not only underscores the potential of rhein as a broad-spectrum antiviral and means to bolster the immune response but also highlights the role of apoptosis as an immunological marker, making it an invaluable addition to the armamentarium against aquatic viral pathogens.


Asunto(s)
Lubina , Enfermedades de los Peces , Infecciones por Rhabdoviridae , Rhabdoviridae , Animales , Factores Inmunológicos/metabolismo , Poder Psicológico , Enfermedades de los Peces/prevención & control
4.
Dig Dis Sci ; 2024 Jun 14.
Artículo en Inglés | MEDLINE | ID: mdl-38877332

RESUMEN

BACKGROUND AND AIMS: Patients with inflammatory bowel disease (IBD) receiving infliximab (IFX) commonly experience immunogenic loss of response (LOR) by formation of anti-drug antibodies (ADAs). An immunomodulator (IMM) used in combination with initial IFX induction is known to reduce ADA development and improve clinical outcomes. We aimed to assess the impact of reactively adding an IMM to patients on IFX monotherapy. METHODS: We conducted a retrospective cohort study and systematic review with meta-analysis of patients with IBD demonstrating immunologic LOR, with or without clinical LOR, that had an IMM (azathioprine, 6-mercaptopurine, or methotrexate) reactively added (reactive combination therapy; rCT) to combat elevated ADAs and raise IFX level. Data were extracted for pooled effect size estimation using random-effects models, and ADA and IFX trough levels were compared pre- and post-IMM initiation. RESULTS: We identified 6 patients who received rCT due to rising ADA titers and low IFX levels. Median ADA titer decreased from 506 ng/mL (interquartile range (IQR) [416-750]) to 76.5 ng/mL (IQR [25.8-232]), an 85% decrease (p = 0.031). Median IFX trough increased from 0.4 µg/mL (IQR [0.4-0.48]) to 8.25 µg/mL (IQR [3.7-9.6]), a 20.6-fold increase (p = 0.038). Meta-analysis pooled effect size of 7 studies with 89 patients showed an 87% ADA titer reduction [95% confidence interval (CI) = 72-94%], 6.7-fold increased IFX trough (95% CI = 2.4-18.7), and 76% clinical remission rescue rate (95% CI = 59-93%). CONCLUSIONS: These results suggest rCT is a valid rescue strategy in patients with immunogenic LOR to IFX to reduce ADA titers, restore therapeutic IFX levels, and recapture clinical remission of IBD.

5.
Mol Cell Neurosci ; 125: 103845, 2023 06.
Artículo en Inglés | MEDLINE | ID: mdl-36948231

RESUMEN

The opioids are potent and widely used pain management medicines despite also possessing severe liabilities that have fueled the opioid crisis. The pharmacological properties of the opioids primarily derive from agonism or antagonism of the opioid receptors, but additional effects may arise from specific compounds, opioid receptors, or independent targets. The study of the opioids, their receptors, and the development of remediation strategies has benefitted from derivatization of the opioids as chemical tools. While these studies have primarily focused on the opioids in the context of the opioid receptors, these chemical tools may also play a role in delineating mechanisms that are independent of the opioid receptors. In this review, we describe recent advances in the development and applications of opioid derivatives as chemical tools and highlight opportunities for the future.


Asunto(s)
Analgésicos Opioides , Receptores Opioides , Humanos , Analgésicos Opioides/farmacología , Analgésicos Opioides/uso terapéutico
6.
Pharm Biol ; 62(1): 367-393, 2024 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-38745507

RESUMEN

CONTEXT: Rice bran arabinoxylan compound (RBAC) is a natural immunomodulator with anticancer properties. OBJECTIVE: This study critically evaluates the available evidence on the biological pathways of RBAC and its effects on cancer treatment. METHODS: This secondary analysis of a scoping review includes studies evaluating the mechanisms of RBAC on healthy or malignant cells, animal models, or humans for cancer prevention or treatment. Data from randomized controlled trials on survival and quality of life outcomes were subjectd to meta analysis. RESULTS: The evidence synthesis was based on 38 articles. RBAC exhibited antitumor properties by promoting apoptosis and restoring immune function in cancer patients to enhance inflammatory and cytotoxic responses to block tumorigenesis. RBAC works synergistically with chemotherapeutic agents by upregulating drug transport. In a clinical trial, combining RBAC with chemoembolization in treating liver cancer showed improved response, reduced recurrence rates, and prolonged survival. RBAC also augments the endogenous antioxidant system to prevent oxidative stress and protect against radiation side effects. In addition, RBAC has chemoprotective effects. Animals and humans have exhibited reduced toxicity and side effects from chemotherapy. Meta analysis indicates that RBAC treatment increases the survival odds by 4.02-times (95% CI: 1.67, 9.69) in the first year and 2.89-times (95% CI: 1.56, 5.35) in the second year. CONCLUSION: RBAC is a natural product with immense potential in cancer treatment. Additional research is needed to characterize, quantify, and standardize the active ingredients in RBAC responsible for the anticancer effects. More well-designed, large-scale clinical trials are required to substantiate the treatment efficacies further.


Asunto(s)
Neoplasias , Oryza , Xilanos , Xilanos/farmacología , Humanos , Animales , Neoplasias/tratamiento farmacológico , Productos Biológicos/farmacología , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/administración & dosificación , Ensayos Clínicos Controlados Aleatorios como Asunto , Antineoplásicos/farmacología
7.
J Biol Chem ; 298(1): 101497, 2022 01.
Artículo en Inglés | MEDLINE | ID: mdl-34919963

RESUMEN

The Kv1.3 channel has been widely demonstrated to play crucial roles in the activation and proliferation of T cells, which suggests that selective blockers could serve as potential therapeutics for autoimmune diseases mediated by T cells. We previously described that the toxin mimic FS48 from salivary gland of Xenopsylla cheopis downregulates the secretion of proinflammatory factors by Raw 264.7 cells by blocking the Kv1.3 channel and the subsequent inactivation of the proinflammatory MAPK/NF-κB pathways. However, the effects of FS48 on human T cells and autoimmune diseases are unclear. Here, we described its immunomodulatory effects on human T cells derived from suppression of Kv1.3 channel. Kv1.3 currents in Jurkat T cells were recorded by whole-cell patch-clamp, and Ca2+ influx, cell proliferation, and TNF-α and IL-2 secretion were measured using Fluo-4, CCK-8, and ELISA assays, respectively. The in vivo immunosuppressive activity of FS48 was evaluated with a rat DTH model. We found that FS48 reduced Kv1.3 currents in Jurkat T cells in a concentration-dependent manner with an IC50 value of about 1.42 µM. FS48 also significantly suppressed Kv1.3 protein expression, Ca2+ influx, MAPK/NF-κB/NFATc1 pathway activation, and TNF-α and IL-2 production in activated Jurkat T cells. Finally, we show that FS48 relieved the DTH response in rats. We therefore conclude that FS48 can block the Kv1.3 channel and inhibit human T cell activation, which most likely contributes to its immunomodulatory actions and highlights the great potential of this evolutionary-guided peptide as a drug template in future studies.


Asunto(s)
Enfermedades Autoinmunes , Canal de Potasio Kv1.3 , Venenos de Escorpión , Linfocitos T , Xenopsylla , Adyuvantes Inmunológicos/farmacología , Animales , Enfermedades Autoinmunes/tratamiento farmacológico , Enfermedades Autoinmunes/inmunología , Humanos , Factores Inmunológicos/farmacología , Interleucina-2/metabolismo , Canal de Potasio Kv1.3/inmunología , Activación de Linfocitos/efectos de los fármacos , FN-kappa B/metabolismo , Bloqueadores de los Canales de Potasio/inmunología , Ratas , Glándulas Salivales/química , Venenos de Escorpión/farmacología , Linfocitos T/efectos de los fármacos , Linfocitos T/inmunología , Factor de Necrosis Tumoral alfa/inmunología , Xenopsylla/química
8.
Pflugers Arch ; 475(9): 1035-1044, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37401986

RESUMEN

In the central nervous system, oligodendrocyte precursor cells (OPCs) are recognized as the progenitors responsible for the generation of oligodendrocytes, which play a critical role in myelination. Extensive research has shed light on the mechanisms underlying OPC proliferation and differentiation into mature myelin-forming oligodendrocytes. However, recent advances in the field have revealed that OPCs have multiple functions beyond their role as progenitors, exerting control over neural circuits and brain function through distinct pathways. This review aims to provide a comprehensive understanding of OPCs by first introducing their well-established features. Subsequently, we delve into the emerging roles of OPCs in modulating brain function in both healthy and diseased states. Unraveling the cellular and molecular mechanisms by which OPCs influence brain function holds great promise for identifying novel therapeutic targets for central nervous system diseases.


Asunto(s)
Células Precursoras de Oligodendrocitos , Células Precursoras de Oligodendrocitos/metabolismo , Vaina de Mielina/metabolismo , Encéfalo/metabolismo , Oligodendroglía/metabolismo , Sistema Nervioso Central , Diferenciación Celular/fisiología
9.
Int J Cancer ; 153(8): 1436-1447, 2023 10 15.
Artículo en Inglés | MEDLINE | ID: mdl-37306091

RESUMEN

Multiple myeloma (MM) is a relapsing clonal plasma cell malignancy and incurable thus far. With the increasing understanding of myeloma, highlighting the critical importance of the immune system in the pathogenesis of MM is essential. The immune changes in MM patients after treatment are associated with prognosis. In this review, we summarize currently available MM therapies and discuss how they affect cellular immunity. We find that the modern anti-MM treatments enhance antitumour immune responses. A deeper understanding of the therapeutic activity of individual drugs offers more effective treatment approaches that enhance the beneficial immunomodulatory effects. Furthermore, we show that the immune changes after treatment in MM patients can provide useful prognostic marker. Analysing cellular immune responses offers new perspectives for evaluating clinical data and making comprehensive predictions for applying novel therapies in MM patients.


Asunto(s)
Mieloma Múltiple , Humanos , Inmunoterapia , Recurrencia Local de Neoplasia , Células Plasmáticas , Inmunidad Celular
10.
Microb Pathog ; 177: 106054, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36882130

RESUMEN

Crimean-Congo hemorrhagic fever is a serious vector-borne zoonotic viral infection which leads to severe illness and fatalities in people living in endemic regions and becoming infected sporadically. Hyalomma ticks are responsible for the transmission of the virus which belongs to the family Nairoviridae. This disease spreads through ticks bite, infected tissues, or blood of viremic animals, and from infected humans to others. Serological studies also indicate the presence of the virus in various domestic and wild animals to be a risk factor for the transmission of the disease. Crimean-Congo hemorrhagic fever virus elicits many immune responses during the infection including inflammatory, innate, and adaptive immune responses. The development of an effective vaccine could be a promising method for the control and prevention of disease in endemic areas. The purpose of this review is to highlight the importance of CCHF, its mode of transmission, the interaction of the virus with the hosts and ticks, immunopathogenesis, and advances in immunization.


Asunto(s)
Virus de la Fiebre Hemorrágica de Crimea-Congo , Fiebre Hemorrágica de Crimea , Garrapatas , Vacunas , Animales , Humanos , Fiebre Hemorrágica de Crimea/prevención & control , Fiebre Hemorrágica de Crimea/epidemiología , Virus de la Fiebre Hemorrágica de Crimea-Congo/fisiología , Animales Salvajes
11.
FEMS Yeast Res ; 232023 01 04.
Artículo en Inglés | MEDLINE | ID: mdl-36866505

RESUMEN

Indonesia is a mega biodiversity country with various local wisdom, including the enormous variety of fermented foods and beverages. Indonesian researchers have conducted an intensive study to understand the diversity of microbes on those fermented products, one of which shows probiotic properties. Compared to that lactic acid bacteria, the study on probiotic yeasts is less explored. Probiotic yeast isolates are commonly isolated from traditional Indonesian fermented products. Saccharomyces, Pichia, and Candida are among Indonesia's most popular genera of probiotic yeasts, primarily applied in poultry and human health. The exploration of functional probiotic characteristics, such as antimicrobial, antifungal, antioxidant, and immunomodulator, has been widely reported from these local probiotic yeast strains. In vivo studies in a model organism such as mice conclude the prospective functional probiotic characteristics of the yeast isolates. Employment of current technology, such as omics, is essential in elucidating those functional properties. Advanced research and development of probiotic yeasts in Indonesia are gaining significant attention currently. For instance, probiotic yeasts-mediated fermentation in the production of kefir and kombucha are among the trend with promising economic value. The future trends of probiotic yeasts research in Indonesia are discussed in this review to give valuable sight into the application of indigenous probiotic yeasts in various fields.


Asunto(s)
Probióticos , Saccharomyces , Animales , Humanos , Ratones , Indonesia , Estudios Prospectivos , Levaduras , Saccharomyces cerevisiae , Fermentación
12.
Vet Res ; 54(1): 91, 2023 Oct 16.
Artículo en Inglés | MEDLINE | ID: mdl-37845774

RESUMEN

The microbiota in humans and animals play crucial roles in defense against pathogens and offer a promising natural source for immunomodulatory products. However, the development of physiologically relevant model systems and protocols for testing such products remains challenging. In this study, we present an experimental condition where various natural products derived from the registered lactic acid bacteria Ligilactobacillus salivarius CECT 9609, known for their immunomodulatory activity, were tested. These products included live and inactivated bacteria, as well as fermentation products at different concentrations and culture times. Using our established model system, we observed no morphological changes in the airway epithelium upon exposure to Pasteurella multocida, a common respiratory pathogen. However, early molecular changes associated with the innate immune response were detected through transcript analysis. By employing diverse methodologies ranging from microscopy to next-generation sequencing (NGS), we characterized the interaction of these natural products with the airway epithelium and their potential beneficial effects in the presence of P. multocida infection. In particular, our discovery highlights that among all Ligilactobacillus salivarius CECT 9609 products tested, only inactivated cells preserve the conformation and morphology of respiratory epithelial cells, while also reversing or altering the natural immune responses triggered by Pasteurella multocida. These findings lay the groundwork for further exploration into the protective role of these bacteria and their derivatives.


Asunto(s)
Productos Biológicos , Ligilactobacillus salivarius , Infecciones por Pasteurella , Pasteurella multocida , Humanos , Animales , Inmunidad Innata , Células Epiteliales , Productos Biológicos/farmacología , Infecciones por Pasteurella/microbiología , Infecciones por Pasteurella/veterinaria
13.
Int J Colorectal Dis ; 38(1): 39, 2023 Feb 13.
Artículo en Inglés | MEDLINE | ID: mdl-36781513

RESUMEN

BACKGROUND: Cronkhite-Canada syndrome (CCS) is considered a relentlessly progressive disease with high mortality rates. Although disease understanding and treatment options have greatly improved, the prognosis from these advancements has not been well documented. This study aimed to evaluate treatment outcomes and overall survival of CCS. METHODS: Seventeen patients who were diagnosed and treated over a 20-year period at Mayo Clinic (Rochester, Minnesota) were included. Data were abstracted, which included clinical and endoscopic manifestations, treatment course, and survival outcomes. RESULTS: The median (interquartile range) duration of follow-up was 8.3 (3.7-15.8) years. All patients received an initial prednisone dose equivalence of 30-80 mg daily, and five patients required steroids at the time of the last follow-up. Twelve patients trialed thiopurine therapy, and ten patients continued with a thiopurine until the last follow-up. Fifteen patients achieved clinical complete remission, and eleven patients achieved endoscopic complete remission after pharmacotherapy initiation. Seven patients required gastrointestinal surgeries during their disease course. The 5-year overall survival was 93.3% (95% confidence interval (CI): 81.5-100%), and the 3-year relapse-free survival was 82.4% (95% CI: 66.1-100%). CONCLUSION: The prognosis and overall survival of patients with CCS have markedly improved with advancement in disease understanding and therapies. Pharmacotherapy, including corticosteroids and immunomodulators, is effective in inducing and maintaining remission, and gastrointestinal surgery is commonly needed as an adjunct for managing CCS disease complications.


Asunto(s)
Corticoesteroides , Poliposis Intestinal , Humanos , Corticoesteroides/uso terapéutico , Pronóstico , Resultado del Tratamiento , Inducción de Remisión , Poliposis Intestinal/tratamiento farmacológico , Poliposis Intestinal/complicaciones
14.
Int J Colorectal Dis ; 38(1): 54, 2023 Feb 25.
Artículo en Inglés | MEDLINE | ID: mdl-36840779

RESUMEN

PURPOSE: Loss of therapeutic response (LOR) due to anti-drug antibodies (ADA) against tumor necrosis factor (TNF) inhibitors is common in patients with inflammatory bowel disease (IBD). We aimed to investigate whether immunomodulator comedication can reverse the immunogenic LOR to TNF inhibitors in IBD. METHODS: In this real-world retrospective cohort study, 123 IBD patients with neutralizing ADA to infliximab or adalimumab and concomitant subtherapeutic trough levels were screened for clinical LOR. Subsequent ADA and trough level measurements and clinical outcomes were analyzed for patients who received either immunomodulator comedication or dose intensification of infliximab or adalimumab to overcome LOR. RESULTS: Following immunogenic LOR, the initial anti-TNF regimen was optimized in 33 patients. In univariable and multivariable logistic regression analyses, immunomodulator comedication was identified as the crucial factor for regaining clinical remission and ADA clearance. Detectable trough levels (≥ 0.98 or ≥ 1.00 mg/L, respectively) had optimal predictive performance for both endpoints in receiver operating characteristics curves [area under the curve 0.86 (95% confidence interval 0.68-1.00) for regaining clinical remission, 0.87 (0.71-1.00) for ADA clearance]. Furthermore, 11/20 patients (55%) on a comedication with azathioprine or methotrexate and 2/13 patients (15%) receiving anti-TNF dose intensification exclusively (P = 0.032) exhibited ADA elimination, regain of therapeutic trough levels, and clinical remission. Regain of clinical remission alone was achieved in 17/20 (85%) patients receiving comedication and 2/13 (15%) patients receiving anti-TNF dose intensification (P = 1.6 × 10-4). CONCLUSION: Immunogenic LOR to infliximab or adalimumab in IBD can be successfully reversed using immunomodulator comedication.


Asunto(s)
Enfermedades Inflamatorias del Intestino , Inhibidores del Factor de Necrosis Tumoral , Humanos , Adalimumab/farmacología , Infliximab/uso terapéutico , Inhibidores del Factor de Necrosis Tumoral/uso terapéutico , Estudios Retrospectivos , Enfermedades Inflamatorias del Intestino/tratamiento farmacológico , Factores Inmunológicos , Anticuerpos , Factor de Necrosis Tumoral alfa , Resultado del Tratamiento
15.
Pharmacoepidemiol Drug Saf ; 32(12): 1421-1430, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37555380

RESUMEN

PURPOSE: The objective was to compare the risk of malignancies in real-world settings between exclusive immunosuppressant (IS) and immunomodulator (IM) use in multiple sclerosis (MS). METHODS: A nested case-control study was designed within a new-user cohort of all patients with MS who initiated a first IM or IS between 2008 and 2014, and without cancer history, using the information of the SNDS nationwide French claims database. Incident cancer cases were matched with up to six controls on year of birth, sex, initiation date, and disease risk score of cancer. A conditional logistic regression (odds ratio [95% confidence interval]) was used to compare exclusive IS versus IM use during follow-up and according to three use durations. RESULTS: From 28 720 newly treated patients with MS, 407 incident cancers were observed during the follow-up with 2324 matched controls. A significant increase in cancer risk was observed for IS compared with IM (1.36 [1.05, 1.77]), with similar increases for the first 2 years of use but not for ≥2 years (1.06 [0.65, 1.75]). Similar increase was also observed for IS with indications other than MS (1.37 [1.04, 1.81]) but not for IS indicated only in MS (1.03 [0.45, 2.34]). CONCLUSIONS: Compared with IM, a 37% increase in cancer risk was observed for IS with indications other than MS and used for a short duration (≤2 years) but not for IS indicated only in MS. The absence of risk for prolonged exposure of IS with indications other than MS is not in favor of a causal relation with these drugs.


Asunto(s)
Esclerosis Múltiple , Neoplasias , Humanos , Esclerosis Múltiple/tratamiento farmacológico , Esclerosis Múltiple/epidemiología , Esclerosis Múltiple/inducido químicamente , Inmunosupresores/efectos adversos , Estudios de Casos y Controles , Factores Inmunológicos/efectos adversos , Neoplasias/inducido químicamente , Neoplasias/epidemiología , Neoplasias/tratamiento farmacológico , Factores de Riesgo , Adyuvantes Inmunológicos
16.
J Sep Sci ; 46(20): e2300380, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37609812

RESUMEN

Imidazoquinoline gallamide is a toll-like receptor 7/8 agonist, belongs to the imidazoquinoline class, has the potential to activate antigen-presenting cells, and enhances immune response, primarily Th1 response. The COVAXIN is a whole virion inactivated Coronavirus disease 2019 vaccine formulated with this novel adjuvant called, aluminum hydroxide gel Imidazoquinoline gallamide, wherein, Imidazoquinoline gallamide is chemisorbed onto aluminum hydroxide gel. Herein, an analytical method based on liquid chromatography-tandem mass spectrometry was developed to identify and quantify Imidazoquinoline gallamide in aluminum hydroxide gel Imidazoquinoline gallamide and COVAXIN. The multiple reaction monitoring transitions were optimized for Imidazoquinoline gallamide quantification are [M+H]+ ions with 512.24→343.19 m/z (quantifier ion) and 512.24→360.22 m/z (qualifier ion). The developed method was validated as per the international conference on harmonization quality2 revison1 guidelines. The method was linear in the range of 0.025-10 µg/mL with a coefficient of determination of 0.9985 and the limit of quantification is 0.025 µg/mL. The accuracy was in the range of 82-121 % and intra- and inter-day precision was less than 7.1% and 5.39%, respectively. The expanded uncertainty results are 9.2% for Imidazoquinoline gallamide in the sample. The validated method was successfully applied to evaluate Imidazoquinoline gallamide concentration in every batch of COVAXIN.


Asunto(s)
Hidróxido de Aluminio , Vacunas contra la COVID-19 , Humanos , Espectrometría de Masas en Tándem/métodos , Cromatografía Liquida/métodos , Adyuvantes Farmacéuticos , Reproducibilidad de los Resultados , Iones , Cromatografía Líquida de Alta Presión/métodos
17.
Skin Therapy Lett ; 28(1): 1-6, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36657434

RESUMEN

Atopic dermatitis (AD) is a common, chronic, recurrent, immune-mediated inflammatory skin disease. Targeted treatment options remain limited. Tralokinumab (Adtralza®) is a promising, new systemic therapy that inhibits interleukin-13. It was recently approved by Health Canada and the US FDA for the treatment of moderate-to-severe AD in adults and may be used alone or with topical corticosteroids. Herein, we review the efficacy and safety of tralokinumab in adults, as demonstrated in clinical trials.


Asunto(s)
Dermatitis Atópica , Humanos , Adulto , Dermatitis Atópica/tratamiento farmacológico , Resultado del Tratamiento , Anticuerpos Monoclonales , Piel , Índice de Severidad de la Enfermedad
18.
Skin Therapy Lett ; 28(6): 7-9, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-38016088

RESUMEN

Prurigo nodularis (PN) is a chronic inflammatory skin condition characterized by the presence of pruritic nodules. Dupilumab was approved by the US Food and Drug Administration in September 2022 and Health Canada in July 2023 for the treatment of PN. Dupilumab is a human monoclonal immunoglobulin G4 antibody that binds the interleukin (IL)-4 receptor alpha subunit, blocking intercellular signalling of IL-4 and IL-13. Inhibition of these cytokines downregulates the inflammatory response and improves disease severity and pruritus. Two randomized controlled trials have shown dupilumab to be effective in reducing pruritus and lesion count in patients with PN. The approval of dupilumab for PN represents the first approved therapy for PN and may indicate a paradigm shift in the way this condition is treated.


Asunto(s)
Anticuerpos Monoclonales Humanizados , Neurodermatitis , Prurigo , Humanos , Anticuerpos Monoclonales/uso terapéutico , Anticuerpos Monoclonales Humanizados/uso terapéutico , Subunidad alfa del Receptor de Interleucina-4/uso terapéutico , Neurodermatitis/tratamiento farmacológico , Prurigo/tratamiento farmacológico , Prurito/tratamiento farmacológico
19.
Int J Mol Sci ; 24(14)2023 Jul 08.
Artículo en Inglés | MEDLINE | ID: mdl-37510995

RESUMEN

Glycine is a non-essential amino acid with many functions and effects. Glycine can bind to specific receptors and transporters that are expressed in many types of cells throughout an organism to exert its effects. There have been many studies focused on the anti-inflammatory effects of glycine, including its abilities to decrease pro-inflammatory cytokines and the concentration of free fatty acids, to improve the insulin response, and to mediate other changes. However, the mechanism through which glycine acts is not clear. In this review, we emphasize that glycine exerts its anti-inflammatory effects throughout the modulation of the expression of nuclear factor kappa B (NF-κB) in many cells. Although glycine is a non-essential amino acid, we highlight how dietary glycine supplementation is important in avoiding the development of chronic inflammation.


Asunto(s)
Glicina , Oligoelementos , Humanos , Glicina/farmacología , Glicina/uso terapéutico , Micronutrientes/uso terapéutico , Citocinas/metabolismo , FN-kappa B/metabolismo , Aminoácidos , Antiinflamatorios/farmacología , Antiinflamatorios/uso terapéutico , Inflamación/tratamiento farmacológico , Inflamación/metabolismo , Oligoelementos/uso terapéutico
20.
Molecules ; 28(5)2023 Mar 06.
Artículo en Inglés | MEDLINE | ID: mdl-36903646

RESUMEN

Diabetes mellitus (DM) is a disease easily complicated by tuberculosis (TB) due to impaired function of the innate immune response. The successes of the discovery of immunomodulatory compounds needs to be continued to introduce new insights into the innate immune response. In previous studies, plant compounds of Etlingera rubroloba A.D. Poulsen (E.rubroloba) were demonstrated to have potential as an immunomodulators. This study aims to isolate and identify the structure of the compounds of E.rubroloba fruit that could effectively improve the function of the innate immune response in individuals with DM infected with TB. The isolation and purification of the compounds of the E.rubroloba extract were carried out by radial chromatography (RC) and thin-layer chromatography (TLC). Identification of the isolated compound structures was determined by measuring the proton (1H) and carbon (13C) nuclear magnetic resonance (NMR). In vitro testing was performed on the immunomodulating activity of the extracts and isolated compounds on DM model macrophages infected with TB antigens. This study succeeded at isolating and identifying the structures of two isolate compounds, namely Sinaphyl alcohol diacetat (BER-1), and Ergosterol peroxide (BER-6). The two isolates were more effective as immunomodulators than the positive controls were, which differed significantly (* p < 0.05) at the reducing interleukin-12 (IL-12) levels and Toll-like receptor-2 (TLR-2) protein expression and increasing the human leucocyte antigen-DR (HLA-DR) protein expression in DM infected with TB. The isolated compound was discovered in E. rubroloba fruits, which has been reported to have the potential to be developed as an immunomodulatory agent. Follow-up testing to determine the mechanism and effectiveness of these compounds as immunomodulators for DM patients is required so that they are not susceptible to TB infection.


Asunto(s)
Diabetes Mellitus , Tuberculosis , Humanos , Frutas , Interleucina-12 , Factores Inmunológicos
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