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1.
Biol Trace Elem Res ; 202(1): 210-220, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-37088826

RESUMEN

In leishmaniasis, the protective immunity is largely mediated by proinflammatory cytokine producing abilities of T cells and an efficient parasite killing by phagocytic cells. Notwithstanding a substantial progress that has been made during last decades, the mechanisms or factors involved in establishing protective immunity against Leishmania are not identified. In ancient Indian literature, metallic "bhasma," particularly that of "swarna" or gold (fine gold particles), is indicated as one of the most prominent metal-based therapeutic medicine, which is known to impart protective and curative properties in various health issues. In this work, we elucidated the potential of swarna bhasma (SB) on the effector properties of phagocytes and antigen-activated CD4+ T cells in augmenting the immunogenicity of L. donovani antigens. The characterization of SB revealing its shape, size, composition, and measurement of cytotoxicity established the physiochemical potential for its utilization as an immunomodulator. The activation of macrophages with SB enhanced their capacity to produce nitric oxide and proinflammatory cytokines, which eventually resulted in reduced uptake of parasites and their proliferation in infected cells. Further, in Leishmania-infected animals, SB administration reduced the generation of IL-10, an anti-inflammatory cytokine, and enhanced pro-inflammatory cytokine generation by antigen activated CD4+ T cells with increased frequency of double (IFNγ+/TNFα+) and triple (IFNγ+TNFα+IL-2+) positive cells and abrogated disease pathogeneses at the early days of infection. Our results also suggested that cow-ghee (A2) emulsified preparation of SB, either alone or with yashtimadhu, a known natural immune modulator which enhances the SB's potential in enhancing the immunogenicity of parasitic antigens. These findings suggested a definite potential of SB in enhancing the effector functions of phagocytes and CD4+ T cells against L. donovani antigens. Therefore, more studies are needed to elucidate the mechanistic details of SB and its potential in enhancing vaccine-induced immunity.


Asunto(s)
Presentación de Antígeno , Antígenos de Protozoos , Linfocitos T CD4-Positivos , Calotropis , Oro , Látex , Leishmania donovani , Macrófagos , Medicina Ayurvédica , Células TH1 , Arsénico , Combinación de Medicamentos , Oro/administración & dosificación , Oro/farmacología , Látex/administración & dosificación , Látex/farmacología , Plomo , Macrófagos/efectos de los fármacos , Macrófagos/inmunología , Linfocitos T CD4-Positivos/inmunología , Fagocitos/efectos de los fármacos , Fagocitos/inmunología , Leishmaniasis/inmunología , Leishmaniasis/parasitología , Leishmania donovani/efectos de los fármacos , Leishmania donovani/crecimiento & desarrollo , Leishmania donovani/inmunología , Antígenos de Protozoos/inmunología , Células TH1/inmunología , Animales , Ratones , Células RAW 264.7 , Femenino , Ratones Endogámicos BALB C
2.
Complement Med Res ; 31(1): 1-9, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38008074

RESUMEN

INTRODUCTION: The coronavirus disease 2019 (COVID-19) is leading to unknown and unusual health conditions that are challenging to manage. Post-COVID-19 fatigue is one of those challenges, becoming increasingly common as the pandemic evolves, as it impairs the quality of life of an individual. This trial attempts to identify the preliminary evidence of the efficacy of individualized homeopathic medicines (IHMs) against placebos in the treatment of post-COVID-19 fatigue in adults. METHODS: A 3-month, single-blind, randomized, placebo-controlled, parallel-arm trial was conducted at the outpatient department of The Calcutta Homoeopathic Medical College and Hospital, India. Sixty participants were randomized in a 1:1 ratio to receive either IHMs (n = 30) or identical-looking placebos (n = 30). The primary and secondary outcome measures were the Fatigue Assessment Scale (FAS) and Outcome in Relation to Impact on Daily Living (ORIDL), respectively, measured every month, for up to 3 months. Comparative analysis was carried out on the intention-to-treat sample to detect group differences. RESULTS: Group differences in both the primary (FAS total: F1, 58 = 14.356, p < 0.001) and secondary outcomes (ORIDL: F1, 58 = 210.986, p < 0.001) after 3 months favored IHMs against placebos. Lycopodium clavatum (11.7%), sulfur (11.7%), Arsenicum album (10%), and Thuja occidentalis (10%) were the most frequently indicated medicines. No harm, unintended effects, homeopathic aggravations, or any serious adverse events were reported from either of the groups. CONCLUSION: IHMs produced significantly better effects than placebos in the treatment of post-COVID-19 fatigue in adults. Definitive robust trials may be undertaken to confirm the findings.EinleitungDie Coronainfektion (COVID-19) zieht unbekannte und ungewöhnliche gesundheitliche Probleme nach sich, deren Management oft eine Herausforderung darstellt. Das gilt unter anderem für Ermüdung nach einer COVID-19-Erkrankung, die mit zunehmender Dauer der Pandemie immer häufiger auftritt und die Lebensqualität der Betroffenen beeinträchtigt. In dieser Studie wird versucht, vorläufige Belege für die Wirksamkeit individualisierter homöopathischer Mittel (IHM) im Vergleich zu Placebo zur Behandlung von Ermüdung nach COVID-19 bei Erwachsenen zu identifizieren.MethodenEine einfach verblindete, randomisierte, placebokontrollierte Parallelgruppenstudie von 3 Monaten Dauer wurde im ambulanten Bereich des Calcutta Homoeopathic Medical College and Hospital in Indien durchgeführt. 60 Teilnehmer erhielten nach Randomisierung im Verhältnis 1:1 entweder IHM (n = 30) oder identisch aussehendes Placebo (n = 30). Die primäre und die sekundäre Zielgröße waren die Fatigue Assessment Scale (FAS) und das Outcome in Relation to Impact on Daily Living (ORIDL) für bis zu 3 Monate, jeweils monatlich gemessen. Vergleichende Analysen wurden an der Intent-to-treat-Population durchgeführt, um Unterschiede zwischen den Gruppen zu erkennen.ErgebnisseGruppenunterschiede bei der primären (FAS gesamt: F1, 58 = 14,356; p < 0.001) sowie der sekundären Zielgröße (ORIDL: F1, 58 = 210,986; p < 0.001) nach 3 Monaten sprachen für die IHM gegenüber Placebo. Lycopodium clavatum (11.7%), sulfur (11.7%), Arsenicum album (10%) und Thuja occidentalis (10%) waren die am häufigsten indizierten Mittel. In beiden Gruppen wurden keine Schädigungen, unbeabsichtigten Wirkungen, homöopathischen Verschlechterungen oder jegliche schwerwiegenden unerwünschten Ereignisse beobachtet.SchlussfolgerungDie IHM erzielten signifikant bessere Effekte als Placebo in der Behandlung von Post-COVID-Ermüdung bei Erwachsenen. Definitive, belastbare Studien können eingeleitet werden, um diese Befunde zu bestätigen.


Asunto(s)
COVID-19 , Materia Medica , Adulto , Humanos , COVID-19/terapia , India , Calidad de Vida , Método Simple Ciego , Azufre
3.
Int J Mol Sci ; 24(11)2023 May 24.
Artículo en Inglés | MEDLINE | ID: mdl-37298166

RESUMEN

Andrographis paniculata belongs to the family Acanthaceae and is known for its medicinal properties owing to the presence of unique constituents belonging to the lactones, diterpenoids, diterpene glycosides, flavonoids, and flavonoid glycosides groups of chemicals. Andrographolide, a major therapeutic constituent of A. paniculata, is extracted primarily from the leaves of this plant and exhibits antimicrobial and anti-inflammatory activities. Using 454 GS-FLX pyrosequencing, we have generated a whole transcriptome profile of entire leaves of A. paniculata. A total of 22,402 high-quality transcripts were generated, with an average transcript length and N50 of 884 bp and 1007 bp, respectively. Functional annotation revealed that 19,264 (86%) of the total transcripts showed significant similarity with the NCBI-Nr database and were successfully annotated. Out of the 19,264 BLAST hits, 17,623 transcripts were assigned GO terms and distributed into three major functional categories: molecular function (44.62%), biological processes (29.19%), and cellular component (26.18%) based on BLAST2GO. Transcription factor analysis showed 6669 transcripts, belonging to 57 different transcription factor families. Fifteen TF genes that belong to the NAC, MYB, and bHLH TF categories were validated by RT PCR amplification. In silico analysis of gene families involved in the synthesis of biochemical compounds having medicinal values, such as cytochrome p450, protein kinases, heat shock proteins, and transporters, was completed and a total of 102 different transcripts encoding enzymes involved in the biosynthesis of terpenoids were predicted. Out of these, 33 transcripts belonged to terpenoid backbone biosynthesis. This study also identified 4254 EST-SSRs from 3661 transcripts, representing 16.34% of the total transcripts. Fifty-three novel EST-SSR markers generated from our EST dataset were used to assess the genetic diversity among eighteen A. paniculata accessions. The genetic diversity analysis revealed two distinct sub-clusters and all accessions based on the genetic similarity index were distinct from each other. A database based on EST transcripts, EST-SSR markers, and transcription factors has been developed using data generated from the present study combined with available transcriptomic resources from a public database using Meta transcriptome analysis to make genomic resources available in one place to the researchers working on this medicinal plant.


Asunto(s)
Andrographis paniculata , Factores de Transcripción , Anotación de Secuencia Molecular , Factores de Transcripción/genética , Etiquetas de Secuencia Expresada , Perfilación de la Expresión Génica , Transcriptoma , Repeticiones de Microsatélite/genética , Bases de Datos Genéticas , Glicósidos
4.
Molecules ; 28(3)2023 Feb 03.
Artículo en Inglés | MEDLINE | ID: mdl-36771169

RESUMEN

Wild plants supply food and shelter to several organisms; they also act as important sources of many nutrients and pharmaceutical agents for mankind. These plants are widely used in traditional medicinal systems and folk medicines. The present study analyzed the nutritional and proximate composition of various compounds in selected wild plants available in the UAE, viz., Chenopodium murale L., Dipterygium glaucum Decne., Heliotropium digynum Asch. ex C.Chr., Heliotropium kotschyi Gürke., Salsola imbricata Forssk., Tribulus pentandrus Forssk., Zygophyllum qatarense Hadidi. The predominant amino acids detected in the plants were glycine, threonine, histidine, cysteine, proline, serine, and tyrosine; the highest quantities were observed in H. digynum and T. pentandrus. The major fatty acids present were long-chain saturated fatty acids; however, lauric acid was only present in S. imbricata. The presence of essential fatty acids such as oleic acid, α-Linoleic acid, and linolenic acid was observed in H. digynum, S. imbricata, and H. kotschyi. These plants also exhibited higher content of nutrients such as carbohydrates, proteins, fats, ash, and fiber. The predominant vitamins in the plants were vitamin B complex and vitamin C. C. murale had higher vitamin A, whereas vitamin B complex was seen in T. pentandrus and D. glaucum. The phosphorus and zinc content were high in T. pentandrus; the nitrogen, calcium, and potassium contents were high in H. digynum, and D. glaucum. Overall, these plants, especially H. digynum and T. pentandrus contain high amounts of nutritionally active compounds and important antioxidants including trace elements and vitamins. The results from the experiment provide an understanding of the nutritional composition of these desert plant species and can be better utilized as important agents for pharmacological drug discovery, food, and sustainable livestock production in the desert ecosystem.


Asunto(s)
Complejo Vitamínico B , Emiratos Árabes Unidos , Ecosistema , Ácidos Grasos/análisis , Plantas , Valor Nutritivo
5.
Genes (Basel) ; 13(8)2022 08 12.
Artículo en Inglés | MEDLINE | ID: mdl-36011344

RESUMEN

Tinospora cordifolia, commonly known as "Giloe" in India, is a shrub belonging to the family Menispermaceae. It is an important medicinal plant known for its antipyretic, anti-inflammatory, antispasmodic, and antidiabetic properties and is used in the treatment of jaundice, gout, and rheumatism. Despite its economic importance, the limited information related to its genomic resources prohibits its judicious exploitation through molecular breeding or biotechnological approaches. In this study, we generated a meta-transcriptome assembly of 43,090 non-redundant transcripts by merging the RNASeq data obtained from Roche 454 GS-FLX, and Illumina platforms, and report the first transcriptome-based database for simple sequence repeats and transcription factors ("TinoTranscriptDB" (Tinospora cordifolia Transcriptome Database)). We annotated 26,716 (62%) of the total transcripts successfully from National Center for Biotechnology Information non-redundant protein (NCBI-NR), gene ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG), Swiss-Prot, and Pfam databases. This database contains information of 2620 perfect simple sequence repeats (P-SSRs) with a relative abundance of 340.12 (loci/Mb), and relative density of 6309.29 (bp/Mb). Excluding mono-nucleotides, the most abundant SSR motifs were tri-nucleotides (54.31%), followed by di-nucleotides (37.51%), tetra-nucleotides (4.54%), penta-nucleotides (3.16%) and hexa-nucleotides (0.45%). Additionally, we also identified 4,311 transcription factors (TFs) and categorized them into 55 sub-families. This database is expected to fill the gap in genomic resource availability in T. cordifolia and thus accelerate molecular breeding and related functional and other applied studies aimed towards genetic improvements of T. cordifolia and related species.


Asunto(s)
Plantas Medicinales , Tinospora , Bases de Datos Factuales , Humanos , Repeticiones de Microsatélite/genética , Anotación de Secuencia Molecular , Plantas Medicinales/genética , Tinospora/genética , Factores de Transcripción/genética
6.
Pharmacol Rep ; 74(3): 439-450, 2022 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-35088386

RESUMEN

Aluminium is one of the most widely distributed elements of the Earth's crust. Its routine use has resulted in excessive human exposure and due to the potential neurotoxic effects has attained a huge interest in recent years. Despite its ubiquitous abundance, aluminium has no crucial biological functions in the human body. Oxidative stress and neuroinflammatory effects are attributed to its neurotoxic manifestations implicated in Alzheimer's disease. In this review, we have discussed the neuroinflammatory and neurodegenerative events in the brain induced by aluminium exposure. We have highlighted the neurotoxic events caused by aluminium, such as oxidative stress, apoptosis, inflammatory events, calcium dyshomeostasis, Aß deposition, and neurofibrillary tangle formation in the brain. In addition, the protective measures needed for prevention of aluminium-induced neuronal dysregulations have also been discussed.


Asunto(s)
Enfermedad de Alzheimer , Síndromes de Neurotoxicidad , Aluminio/toxicidad , Enfermedad de Alzheimer/inducido químicamente , Enfermedad de Alzheimer/complicaciones , Humanos , Síndromes de Neurotoxicidad/etiología , Estrés Oxidativo , Factores de Riesgo
7.
Front Immunol ; 12: 699389, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34603280

RESUMEN

The impact of zinc (Zn) sufficiency/supplementation on COVID-19-associated mortality and incidence (SARS-CoV-2 infections) remains unknown. During an infection, the levels of free Zn are reduced as part of "nutritional immunity" to limit the growth and replication of pathogen and the ensuing inflammatory damage. Considering its key role in immune competency and frequently recorded deficiency in large sections of different populations, Zn has been prescribed for both prophylactic and therapeutic purposes in COVID-19 without any corroborating evidence for its protective role. Multiple trials are underway evaluating the effect of Zn supplementation on COVID-19 outcome in patients getting standard of care treatment. However, the trial designs presumably lack the power to identify negative effects of Zn supplementation, especially in the vulnerable groups of elderly and patients with comorbidities (contributing 9 out of 10 deaths; up to >8,000-fold higher mortality). In this study, we have analyzed COVID-19 mortality and incidence (case) data from 23 socially similar European populations with comparable confounders (population: 522.47 million; experiencing up to >150-fold difference in death rates) and at the matching stage of the pandemic (March 12 to June 26, 2020; first wave of COVID-19 incidence and mortality). Our results suggest a positive correlation between populations' Zn-sufficiency status and COVID-19 mortality [r (23): 0.7893-0.6849, p-value < 0.0003] as well as incidence [r (23):0.8084-0.5658; p-value < 0.005]. The observed association is contrary to what would be expected if Zn sufficiency was protective in COVID-19. Thus, controlled trials or retrospective analyses of the adverse event patients' data should be undertaken to correctly guide the practice of Zn supplementation in COVID-19.


Asunto(s)
COVID-19/dietoterapia , COVID-19/mortalidad , SARS-CoV-2/efectos de los fármacos , Zinc/sangre , Zinc/uso terapéutico , COVID-19/epidemiología , Comorbilidad , Suplementos Dietéticos , Europa (Continente)/epidemiología , Humanos , Oxidación-Reducción/efectos de los fármacos , Estrés Oxidativo , SARS-CoV-2/inmunología
8.
Epidemiol Psychiatr Sci ; 30: e63, 2021 Oct 11.
Artículo en Inglés | MEDLINE | ID: mdl-34632978

RESUMEN

Research on the effectiveness of mental health and psychosocial support interventions for common mental disorders in global mental health provides controversial results. These results are based on mean values for different groups, often without due consideration of individual-level characteristics and contextual factors. Against this background, and based on the recent development of a precision theoretical framework in clinical psychology, which is calling for a renewed perspective on the development and implementation of trial designs, we propose to develop a precision psychology paradigm in global mental health, with emphasis not only on individual clinical and socio-demographic data, but also on the social determinants of mental health. A precision psychology paradigm would require a coordinated action of academics, stakeholders and humanitarian workers in planning a global mental health research agenda, including the design of trials aimed at reliably approximate prediction of intervention response at individual level.


Asunto(s)
Trastornos Mentales , Servicios de Salud Mental , Salud Global , Humanos , Trastornos Mentales/terapia , Salud Mental
9.
3 Biotech ; 11(10): 425, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34567930

RESUMEN

Transcriptional factors act as mediators in regulating stress response in plants from signal perception to processing the directed gene expression. WRKY, MYB, AP2/ERF, etc. are some of the major families of transcription factors known to mediate stress mechanisms in plants by regulating the production of secondary metabolites. NAC domain-containing proteins are among these large transcription factors families in plants. These proteins play impulsive roles in plant growth, development, and various abiotic as well as biotic stresses. They are involved in regulating the different signaling pathways of plant hormones that direct a plant's immunity against pathogens, thereby affecting their immune responses. However, their role in stress regulation or defence mechanism in plants through the secondary metabolite biosynthesis pathway is studied for very few cases. Emerging concern over the requirement of medicinal plants for the production of biocompatible drugs and antibiotics, the study of these vast, affecting proteins should be focused to improve their qualitative and quantitative production further. In medicinal plants, phytochemicals and secondary metabolites are the major biochemicals that impose antimicrobial and other medicinal properties in these plants. This review compiles the NAC transcription factors reported in selected medicinal plants and their possible roles in different mechanisms. Further, the comprehensive understanding of the molecular mechanism, genetic engineering, and regulation responses of NAC TFs in medicinal plants, can lead to improvement in stress response, immunity, and production of usable secondary metabolites.

10.
Plants (Basel) ; 9(12)2020 Dec 09.
Artículo en Inglés | MEDLINE | ID: mdl-33316874

RESUMEN

Kalmegh (Andrographis paniculata (Burm. F.) Nees) is one of the most important medicinal plants and has been widely explored as traditional medicine. To exploit its natural genetic diversity and initiations of molecular breeding to develop novel cultivars or varieties, developments of genomic resources are essential. Four microsatellite-enriched genomic libraries-(CT)14, (GT)12, (AG)15 and (AAC)8-were constructed using the genomic DNA of A. paniculata. Initially, 183 recombinant colonies were screened for the presence of CT, GT, AG, and AAC microsatellite repeats, out of which 47 clones found positive for the desired simple sequence repeats (SSRs). It was found that few colonies had more than one desirable SSR. Thus, a sum of 67 SSRs were designed and synthesized for their validation among 42 A. paniculata accessions. Out of the 67 SSRs used for genotyping, only 41 were found to be polymorphic. The developed set of g-SSR markers showed substantial genetic variability among the selected A. paniculata accessions, with an average polymorphic information content (PIC) value of 0.32. Neighbor-joining tree analysis, population structure analysis, analysis of molecular variance (AMOVA), and principal coordinate analysis (PCoA) illustrated the considerable genetic diversity among them. The novel g-SSR markers developed in the present study could be important genomic resources for future applications in A. paniculata.

11.
CNS Neurol Disord Drug Targets ; 19(7): 527-540, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32787765

RESUMEN

BACKGROUND: Parkinson's Disease (PD) is characterized by both motor and non-motor symptoms. The presynaptic neuronal protein, α-Synuclein, plays a pivotal role in PD pathogenesis and is associated with both genetic and sporadic origin of the disease. Ursolic Acid (UA) is a well-known bioactive compound found in various medicinal plants, widely studied for its anti-inflammatory and antioxidant activities. OBJECTIVE: In this research article, the neuroprotective potential of UA has been further explored in the Rotenone-induced mouse model of PD. METHODS: To investigate our hypothesis, we have divided mice into 4 different groups, control, drug only control, Rotenone-intoxicated group, and Rotenone-intoxicated mice treated with UA. After the completion of dosing, behavioral parameters were estimated. Then mice from each group were sacrificed and the brains were isolated. Further, the biochemical tests were assayed to check the balance between the oxidative stress and endogenous anti-oxidants; and TH (Tyrosine Hydroxylase), α-Synuclein, Akt (Serine-threonine protein kinase), ERK (Extracellular signal-regulated kinase) and inflammatory parameters like Nuclear Factor-κB (NF-κB) and Tumor Necrosis Factor- α (TNF-α) were assessed using Immunohistochemistry (IHC). Western blotting was also done to check the expressions of TH and α-Synuclein. Moreover, the expression levels of PD related genes like α-Synuclein, ß-Synuclein, Interleukin-1ß (IL-1ß), and Interleukin-10 (IL-10) were assessed by using Real-time PCR. RESULTS: The results obtained in our study suggested that UA significantly reduced the overexpression of α-Synuclein and regulated the phosphorylation of survival-related kinases (Akt and ERK) apart from alleviating the behavioral abnormalities and protecting the dopaminergic neurons from oxidative stress and neuroinflammation. CONCLUSION: Thus, our study shows the neuroprotective potential of UA, which can further be explored for possible clinical intervention.


Asunto(s)
Neuroprotección/efectos de los fármacos , Fármacos Neuroprotectores/uso terapéutico , Trastornos Parkinsonianos/tratamiento farmacológico , Triterpenos/uso terapéutico , Animales , Antiinflamatorios/uso terapéutico , Antioxidantes/uso terapéutico , Encéfalo/metabolismo , Modelos Animales de Enfermedad , Neuronas Dopaminérgicas/metabolismo , Masculino , Ratones , Estrés Oxidativo/efectos de los fármacos , Enfermedad de Parkinson/tratamiento farmacológico , Rotenona/metabolismo , alfa-Sinucleína/metabolismo , Ácido Ursólico
12.
PLoS One ; 15(4): e0230991, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32240242

RESUMEN

There has been a growing burden of anxiety among Nepalese adolescents. Social anxiety in particular is one of the commonly reported symptoms indicating mental health problem among adolescents. The purpose of this study was to assess social anxiety, and identify how social support, emotion regulation and mindfulness uniquely contribute to social anxiety among adolescents in Birgunj, Nepal. The study was conducted by using a self-administered questionnaire among 384 adolescents (65.4% boys; M = 16.05 years, SD = 1.39) studying at secondary schools of Birgunj. Results show that there was a positive correlation between social anxiety symptoms and age, and girls reported more symptoms. Traits such as non-acceptance of emotions, lack of clarity and lack of awareness of emotions were related to increased social anxiety; while acting with awareness, non-reactivity, and better ability to describe emotions was related to decreased social anxiety. Finally, more social support from close friends was related to lower social anxiety. These results suggest that improving emotion regulation, dispositional mindfulness, and social support may be helpful for adolescents who are at risk of, or are suffering from, social anxiety.


Asunto(s)
Trastornos de Ansiedad/psicología , Ansiedad/psicología , Regulación Emocional/fisiología , Emociones/fisiología , Adolescente , Adulto , Estudios Transversales , Depresión/psicología , Miedo/psicología , Femenino , Humanos , Masculino , Atención Plena , Nepal , Instituciones Académicas , Apoyo Social , Encuestas y Cuestionarios , Adulto Joven
13.
Clin Transl Sci ; 13(1): 137-146, 2020 01.
Artículo en Inglés | MEDLINE | ID: mdl-31651077

RESUMEN

Variation in methotrexate (MTX) efficacy represents a significant barrier to early and effective disease control in the treatment of autoimmune arthritis. We hypothesize that the utilization of metabolomic techniques will allow for an improved understanding of the biochemical basis for the pharmacological activity of MTX, and can promote the identification and evaluation of novel molecular biomarkers of MTX response. In this work, erythroblastoid cells were exposed to MTX at the physiologic concentration of 1,000 nM and analyzed using three metabolomic platforms to give a broad spectrum of cellular metabolites. MTX pharmacological activity, defined as cellular growth inhibition, was associated with an altered cellular metabolomic profile based on the analysis of 724 identified metabolites. By discriminant analysis, MTX treatment was associated with increases in ketoisovaleric acid, fructose, galactose, and 2-deoxycytidine, and corresponding reductions in 2-deoxyuridine, phosphatidylinositol 32:0, orotic acid, and inosine monophosphate. Inclusion of data from analysis of folate metabolism in combination with chemometric and metabolic network analysis demonstrated that MTX treatment is associated with dysregulated folate metabolism and nucleotide biosynthesis, which is in line with its known mechanism of action. However, MTX treatment was also associated with alterations in a diversity of metabolites, including intermediates of amino acid, carbohydrate, and lipid metabolism. Collectively, these findings support a robust metabolic response following exposure to physiologic concentrations of MTX. They also identify various metabolic intermediates that are associated with the pharmacological activity of MTX, and are, therefore, potential molecular biomarker candidates in future preclinical and clinical studies of MTX efficacy in autoimmune arthritis.


Asunto(s)
Antirreumáticos/administración & dosificación , Artritis Reumatoide/tratamiento farmacológico , Monitoreo de Drogas/métodos , Metabolómica/métodos , Metotrexato/administración & dosificación , Antirreumáticos/efectos adversos , Antirreumáticos/farmacocinética , Artritis Reumatoide/sangre , Artritis Reumatoide/inmunología , Artritis Reumatoide/metabolismo , Biomarcadores/sangre , Biomarcadores/metabolismo , Evaluación Preclínica de Medicamentos/métodos , Humanos , Células K562 , Metotrexato/efectos adversos , Metotrexato/farmacocinética
14.
Eur J Pharmacol ; 853: 264-274, 2019 Jun 15.
Artículo en Inglés | MEDLINE | ID: mdl-30951714

RESUMEN

Methotrexate (MTX) efficacy in autoimmune arthritis is variable and unpredictable resulting in the need for the identification of biomarkers to guide drug therapy. This study utilizes the collagen-induced arthritis mouse model to investigate erythrocyte MTX disposition and anti-folate activity as biochemical markers of efficacy in autoimmune arthritis. Following induction of arthritis, DBA/1J mice were treated with once-weekly subcutaneous MTX at varying doses over a period of 40 days. At the completion of the study tissue samples were analyzed for MTX and folate content and assessed for their relationship with MTX efficacy. MTX treatment resulted in a reduction in disease activity that was variable and dose-dependent. Erythrocyte accumulation of MTX and its polyglutamate metabolites were dose proportionate, however, polyglutamate metabolites represented a mean ±â€¯S.E.M. of 8.9 ±â€¯0.4% of total erythrocyte MTX, which is markedly lower than previously observed in humans and failed to display any significant association with MTX efficacy. MTX treatment resulted in reductions in erythrocyte 5-methyl-tetrahydrofolate (5mTHF) levels that were similar to those previously observed in human studies. Disease induction was associated with a decrease in liver 5mTHF and increased formyl-tetrahydrofolate (fTHF) that was normalized in MTX treated mice. MTX efficacy was associated with reductions in erythrocyte 5mTHF (P = 0.04) and increases in liver 5mTHF (P = 0.0001). Together, these findings demonstrate a relationship between alterations in tissue folate levels and MTX efficacy, and supports erythrocyte levels of 5mTHF as a marker of MTX efficacy in autoimmune arthritis.


Asunto(s)
Artritis Experimental/metabolismo , Colágeno/efectos adversos , Antagonistas del Ácido Fólico/metabolismo , Antagonistas del Ácido Fólico/farmacología , Ácido Fólico/metabolismo , Metotrexato/metabolismo , Metotrexato/farmacología , Animales , Artritis Experimental/inducido químicamente , Modelos Animales de Enfermedad , Masculino , Ratones , Ácido Poliglutámico/metabolismo
15.
Neuromolecular Med ; 21(1): 42-53, 2019 03.
Artículo en Inglés | MEDLINE | ID: mdl-30644041

RESUMEN

Parkinson's disease (PD), a neurodegenerative central nervous system disorder, is characterised by progressive loss of nigrostriatal neurons in basal ganglia. Previous studies regarding PD have suggested the role of oxidative stress along with neuroinflammation in neurodegeneration. Accordingly, our study explore the anti-inflammatory activity of Tinospora cordifolia aqueous extract (TCAE) in 1-methyl-4-phenyl-1,2,3,6-tetra hydropyridine (MPTP)-intoxicated Parkinsonian mouse model. MPTP-intoxicated mice showed significant behavioral and biochemical abnormalities which were effectively reversed by TCAE. It is evident that TCAE inhibits the MPTP-intoxicated Nuclear factor-κB (NF-κB) activation and its associated pro-inflammatory cytokine tumor necrosis factor-α (TNF-α) from immunohistochemistry and Western blot analysis. In MPTP-intoxicated mice, microglial and astroglial-specific inflammatory markers, ionized calcium binding adaptor molecule 1 (Iba1) and glial fibrillary acidic protein (GFAP), respectively were increased while were significantly reduced in TCAE treatment. Expression of pro-inflammatory cytokine genes, TNF-α, Interleukin-12 (IL-12) and Interleukin-1ß (IL-1ß) were found to be upregulated in MPTP-intoxicated mice, whereas TCAE treatment restored their levels. Additionally, anti-inflammatory factor Interleukin-10 (IL-10) gene was found to be downregulated in MPTP-intoxicated mice which were significantly restored by TCAE treatment. Tyrosine hydroxylase (TH) expression was reduced in MPTP-intoxicated mice, while its expression was significantly increased in TCAE-treated group. Our result strongly suggests that T. cordifolia protects dopaminergic neurons by suppressing neuroinflammation in MPTP-induced Parkinsonian mouse model.


Asunto(s)
Antiinflamatorios/uso terapéutico , Intoxicación por MPTP/tratamiento farmacológico , Fármacos Neuroprotectores/uso terapéutico , Trastornos Parkinsonianos/tratamiento farmacológico , Fitoterapia , Tinospora/química , Animales , Antiinflamatorios/administración & dosificación , Antiinflamatorios/farmacología , Astrocitos/efectos de los fármacos , Astrocitos/metabolismo , Cuerpo Estriado/efectos de los fármacos , Cuerpo Estriado/metabolismo , Citocinas/biosíntesis , Citocinas/genética , Modelos Animales de Enfermedad , Neuronas Dopaminérgicas/efectos de los fármacos , Neuronas Dopaminérgicas/metabolismo , Relación Dosis-Respuesta a Droga , Regulación de la Expresión Génica/efectos de los fármacos , Peroxidación de Lípido/efectos de los fármacos , Masculino , Medicina Ayurvédica , Ratones , Ratones Endogámicos C57BL , Microglía/efectos de los fármacos , Microglía/metabolismo , Proteínas del Tejido Nervioso/metabolismo , Fármacos Neuroprotectores/administración & dosificación , Fármacos Neuroprotectores/farmacología , Estrés Oxidativo/efectos de los fármacos , Extractos Vegetales/uso terapéutico , Tallos de la Planta/química , Prueba de Desempeño de Rotación con Aceleración Constante , Sustancia Negra/efectos de los fármacos , Sustancia Negra/metabolismo
16.
J Ayurveda Integr Med ; 10(2): 88-93, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-29249635

RESUMEN

BACKGROUND: Tamra Bhasma is derived from metallic copper that is recommended for different ailments of liver and spleen, dropsy, abdominal pain, heart disease, colitis, tumors, anemia, loss of appetite, tuberculosis, as well as eye problems. OBJECTIVES: The knowledge of crystallite size and active ingredients in Bhasma materials is limited restricting its use as nanomedicine in the modern era. Also, the 2015 Nobel prize in medicine has motivated many researchers towards traditional medicines. Therefore, the different chemical and physical properties of prepared Tamra Bhasma has been studied by modern experimental tools (XRD, VSM, SEM, FTIR and PL spectrometer) and the preliminary testing of Tamra Bhasma nanoparticles was examined on bacteria. MATERIALS AND METHODS: Bhasma is prepared by metals and minerals using three step procedures e.g. Shodhana, Bhavana and Marana. In the present work, for the preparation of Tamra Bhasma, pulverized copper wire was used and prepared by the principle of Puta (incineration) in an Electrical Muffle Furnace (EMF). RESULTS: X-ray diffraction analysis and scanning electron microscopy results revealed that the crystallite size of Bhasma powder was less than 100 nm and nanocrystallites of aglomerated size in micrometer. Magnetometer measurement supports its medicinal value. Photoluminescence (PL) properties of nanocrystalline Bhasma powder was investigated in UV-NIR region and shows luminescence in visible region. The antimicrobial study of Tamra Bhasma shows effectiveness on bacteria and, may be useful to control the bacterial infection disease. CONCLUSION: Scientific data obtained using modern scientific tools and evidence would support in utilizing the ancient Indian wisdom of Ayurveda for the development of newer drugs as a modern nanomedicine and in other possible technological applications.

17.
J Drugs Dermatol ; 17(11): 1211-1218, 2018 11 01.
Artículo en Inglés | MEDLINE | ID: mdl-30500143

RESUMEN

Objective: To assess the real-world risk of developing adverse medical conditions (AMCs) among patients with psoriasis treated with biologic therapies or conventional systemic/topical therapies (CST/topical). Methods: Adult patients with psoriasis were identified from the Truven MarketScan US claims database (2008 Q3­2015 Q3) and classified into cohorts based on treatment initiated on the index date (adalimumab [ADA], etanercept [ETN], ustekinumab [UST], infliximab [IFX], or CST/topical). Incident AMCs were identified while on treatment from diagnoses recorded in medical claims and included abnormal test results, infections, mental disorders, cardiovascular disease, malignancies (skin and non-skin), and respiratory disease. Cox proportional hazards models were used to compare AMC risk for (1) ADA, ETN, and UST (separately) vs CST/topical, and (2) ADA vs other biologic therapies (ETN, UST, and IFX combined). Regressions were adjusted for age, gender, region, insurance plan type, year, Charlson comorbidity index, and prior AMCs; and based on stepwise selection, comorbidities, specialist encounters, and frequently prescribed treatments. Results: A total of 42,981 patients were identified (ADA: 5,197; ETN: 3,311; UST: 1,370; IFX: 187; CST/topical: 32,916). Across cohorts, median age was 46­50 years, 46.2%­53.1% were female, and median follow-up duration was 3.3­7.9 months. For all cohorts, infection was the most frequent AMC (28.7%­41.8%). Compared with CST/topical, ADA, ETN, and UST were associated with a lower risk of infections (adjusted hazard ratio [aHR]: 0.93, 0.92, and 0.86, respectively, all P<0.05). ADA was associated with a lower risk of malignancies (aHR: 0.71, P<0.05), and ETN was associated with a lower risk of respiratory disease (aHR: 0.80, P<0.05). Compared with biologic therapies, ADA was not associated with higher risk of AMCs. Conclusions: Compared to CST/topical, biologic therapies were associated with similar or lower risk of AMCs. Comparison between ADA and other biologic therapies suggests a similar safety profile with respect to the studied AMCs.


Asunto(s)
Antirreumáticos/efectos adversos , Productos Biológicos/efectos adversos , Fármacos Dermatológicos/efectos adversos , Vigilancia de Productos Comercializados/estadística & datos numéricos , Psoriasis/tratamiento farmacológico , Adalimumab/efectos adversos , Etanercept/efectos adversos , Femenino , Humanos , Infliximab/efectos adversos , Masculino , Metotrexato/efectos adversos , Persona de Mediana Edad , Terapia PUVA/efectos adversos , Psoriasis/diagnóstico , Estudios Retrospectivos , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Ustekinumab/efectos adversos
18.
Front Pharmacol ; 9: 757, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30127737

RESUMEN

Oxidative stress and neuroinflammation play a key role in dopaminergic (DA) neuronal degeneration, which results in the hindrance of normal ongoing biological processes in the case of Parkinson's disease. As shown in several studies, on 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) administration, different behavioral parameters have suggested motor impairment and damage of antioxidant defence. Thus, some specific biological molecules found in medicinal plants can be used to inhibit the DA neuronal degeneration through their antioxidant and anti-inflammatory activities. With this objective, we studied chlorogenic acid (CGA), a naturally occurring polyphenolic compound, for its antioxidant and anti-inflammatory properties in MPTP-intoxicated mice. We observed significant reoccurrence of motor coordination and antioxidant defence on CGA supplementation, which has been in contrast with MPTP-injected mice. Moreover, in the case of CGA-treated mice, the enhanced expression of tyrosine hydroxylase (TH) within the nigrostriatal region has supported its beneficial effect. The activation of glial cells and oxidative stress levels were also estimated using inducible nitric oxide synthase (iNOS) and glial fibrillary acidic protein (GFAP) immunoreactivity within substantia nigra (SN) and striatum of MPTP-injected mice. Administration of CGA has prevented the neuroinflammation in SN by regulating the nuclear factor-κB expression in the MPTP-induced group. The significant release of certain pro-inflammatory mediators such as tumor necrosis factor-α and interleukin (IL)-1ß has also been inhibited by CGA with the enhanced expression of anti-inflammatory cytokine IL-10. Moreover, reduced GFAP staining within the nigrostriatal region has supported the fact that CGA has significantly helped in the attenuation of astrocyte activation. Hence, our study has shown that CGA supplementation shows its therapeutic ability by reducing the oxidative stress and neuroinflammation in MPTP-intoxicated mice.

19.
J Am Acad Dermatol ; 79(1): 60-68, 2018 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-29499292

RESUMEN

BACKGROUND: Psoriasis is a risk factor for cardiovascular events. OBJECTIVE: To assess the risk of major cardiovascular events and the effect of cumulative treatment exposure on cardiovascular event risk in patients with psoriasis treated with tumor necrosis factor-α inhibitors (TNFis) versus phototherapy. METHODS: Adult patients with psoriasis were selected from a large US administrative claims database (from the first quarter of 2000 through the third quarter of 2014) and classified in 2 mutually exclusive cohorts based on whether they were treated with TNFis or phototherapy. Cardiovascular event risk was compared between cohorts using multivariate Cox proportional hazards models. Cumulative exposure was defined based on treatment persistence. RESULTS: A total of 11,410 TNFi and 12,433 phototherapy patients (psoralen plus ultraviolet A light phototherapy, n = 1117; ultraviolet B light phototherapy, n = 11,316) were included in this study. TNFi patients had a lower risk of cardiovascular events compared to phototherapy patients (adjusted hazard ratio 0.77, P < .05). The risk reduction associated with 6 months of cumulative exposure was 11.2% larger for patients treated with TNFis compared to phototherapy (P < .05). LIMITATIONS: Information on psoriasis severity and mortality was limited/not available. CONCLUSIONS: Patients with psoriasis who were treated with TNFis exhibited a lower cardiovascular event risk than patients treated with phototherapy. Cumulative exposure to TNFis was associated with an incremental cardiovascular risk reduction compared to phototherapy.


Asunto(s)
Enfermedades Cardiovasculares/diagnóstico , Enfermedades Cardiovasculares/epidemiología , Psoriasis/epidemiología , Psoriasis/terapia , Factor de Necrosis Tumoral alfa/antagonistas & inhibidores , Terapia Ultravioleta/métodos , Adulto , Distribución por Edad , Anciano , Estudios de Cohortes , Comorbilidad , Bases de Datos Factuales , Femenino , Humanos , Incidencia , Masculino , Persona de Mediana Edad , Pronóstico , Modelos de Riesgos Proporcionales , Psoriasis/diagnóstico , Medición de Riesgo , Distribución por Sexo , Resultado del Tratamiento , Factor de Necrosis Tumoral alfa/administración & dosificación , Estados Unidos
20.
J Pharmacol Exp Ther ; 365(1): 96-106, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29420256

RESUMEN

Lower plasma nicotinamide phosphoribosyltransferase (NAMPT) levels are associated with improved response to methotrexate (MTX) in patients with juvenile idiopathic arthritis. Cell-based studies confirmed that reduced cellular NAMPT activity potentiates the pharmacologic activity of MTX; however, the mechanism of this interaction has yet to be defined. Therefore, in this study, we investigate the mechanism of enhanced pharmacologic activity of MTX in NAMPT-deficient A549 cells. Small interfering RNA-based silencing of NAMPT expression resulted in a greater than 3-fold increase in sensitivity to MTX (P < 0.005) that was completely reversed by supplementation with folinic acid. Despite a 68% reduction in cellular NAD levels in NAMPT-deficient cells, no change in expression or activity of dihydrofolate reductase was observed and uptake of MTX was not significantly altered. MTX did not potentiate the depletion of cellular NAD levels, but NAMPT-deficient cells had significant elevations in levels of intermediates of de novo purine biosynthesis and were 4-fold more sensitive to depletion of ATP by MTX (P < 0.005). Supplementation with hypoxanthine and thymidine completely reversed the antiproliferative activity of MTX in NAMPT-deficient cells and corresponded to repletion of the cellular ATP pool without any effect on NAD levels. Together, these findings demonstrate that increased MTX activity with decreased NAMPT expression is dependent on the antifolate activity of MTX and is driven by enhanced sensitivity to the ATP-depleting effects of MTX. For the first time, these findings provide mechanistic details to explain the increase in pharmacological activity of MTX under conditions of reduced NAMPT activity.


Asunto(s)
Adenosina Trifosfato/metabolismo , Citocinas/deficiencia , Espacio Intracelular/efectos de los fármacos , Espacio Intracelular/metabolismo , Metotrexato/farmacología , Nicotinamida Fosforribosiltransferasa/deficiencia , Células A549 , Transporte Biológico , Proliferación Celular/efectos de los fármacos , Citocinas/genética , Ácido Fólico/metabolismo , Silenciador del Gen , Homeostasis/efectos de los fármacos , Humanos , Nicotinamida Fosforribosiltransferasa/genética
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