Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 53
Filtrar
Mais filtros

Bases de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
J Pediatr Gastroenterol Nutr ; 77(5): 661-665, 2023 11 01.
Artigo em Inglês | MEDLINE | ID: mdl-37608441

RESUMO

OBJECTIVES: Gastrointestinal (GI) endoscopic procedures are considered low risk with an overall bleeding risk for upper and lower endoscopies of 0.11%. However, a certain population of patients may have a higher risk for bleeding, and there is not a standardized process for screening patients to determine who these patients are. METHODS: At Children's Wisconsin, our gastroenterology and hematology divisions adapted an abbreviated version of a validated, history-based bleeding risk screening tool and implemented a hematology referral process to identify those at risk for bleeding prior to their first endoscopy. Provider compliance with the bleeding screen, referral to hematology, time to be seen in hematology clinic, new diagnoses of bleeding disorders, and bleeding complications were assessed from 2019 to 2021 across 3 phases. RESULTS: Provider compliance with the bleeding screen improved throughout our study from 48% (120/251) to 75% (189/253). For those who screened positive, compliance with referral to hematology ranged from 38% to 74% across our phases. The overall time to be seen by hematology decreased from 30 days to 7.5 days. Eighteen patients ultimately screened positive and were seen in hematology clinic, of whom 22% (4/18) were diagnosed with a new bleeding disorder. No bleeding complications were seen in our study population. CONCLUSIONS: Our quality improvement project provided a standardized screening tool to assess preoperative bleeding risk and reinforced the value of a history-based screening tool. This modified screening tool identified those with an undiagnosed bleeding disorder and preventative measures were undertaken to prevent procedural bleeding complications.


Assuntos
Transtornos da Coagulação Sanguínea , Hematologia , Humanos , Criança , Endoscopia Gastrointestinal , Hemorragia , Encaminhamento e Consulta
2.
Proc Natl Acad Sci U S A ; 117(6): 3114-3122, 2020 02 11.
Artigo em Inglês | MEDLINE | ID: mdl-31988134

RESUMO

Plasmodium falciparum vaccine RTS,S/AS01 is based on the major NPNA repeat and the C-terminal region of the circumsporozoite protein (CSP). RTS,S-induced NPNA-specific antibody titer and avidity have been associated with high-level protection in naïve subjects, but efficacy and longevity in target populations is relatively low. In an effort to improve upon RTS,S, a minimal repeat-only, epitope-focused, protective, malaria vaccine was designed. Repeat antigen copy number and flexibility was optimized using the tobacco mosaic virus (TMV) display platform. Comparing antigenicity of TMV displaying 3 to 20 copies of NPNA revealed that low copy number can reduce the abundance of low-affinity monoclonal antibody (mAb) epitopes while retaining high-affinity mAb epitopes. TMV presentation improved titer and avidity of repeat-specific Abs compared to a nearly full-length protein vaccine (FL-CSP). NPNAx5 antigen displayed as a loop on the TMV particle was found to be most optimal and its efficacy could be further augmented by combination with a human-use adjuvant ALFQ that contains immune-stimulators. These data were confirmed in rhesus macaques where a low dose of TMV-NPNAx5 elicited Abs that persisted at functional levels for up to 11 mo. We show here a complex association between NPNA copy number, flexibility, antigenicity, immunogenicity, and efficacy of CSP-based vaccines. We hypothesize that designing minimal epitope CSP vaccines could confer better and more durable protection against malaria. Preclinical data presented here supports the evaluation of TMV-NPNAx5/ALFQ in human trials.


Assuntos
Anticorpos Antiprotozoários/imunologia , Vacinas Antimaláricas , Malária Falciparum/imunologia , Plasmodium falciparum , Proteínas de Protozoários , Vírus do Mosaico do Tabaco/genética , Animais , Células HEK293 , Humanos , Imunogenicidade da Vacina , Macaca mulatta , Vacinas Antimaláricas/química , Vacinas Antimaláricas/genética , Vacinas Antimaláricas/imunologia , Camundongos , Camundongos Endogâmicos C57BL , Modelos Moleculares , Plasmodium falciparum/genética , Plasmodium falciparum/imunologia , Engenharia de Proteínas , Proteínas de Protozoários/química , Proteínas de Protozoários/genética , Proteínas de Protozoários/imunologia , Proteínas Recombinantes de Fusão/química , Proteínas Recombinantes de Fusão/genética , Proteínas Recombinantes de Fusão/imunologia
3.
Molecules ; 27(10)2022 May 19.
Artigo em Inglês | MEDLINE | ID: mdl-35630753

RESUMO

A molecularly imprinting polymer (MIP) was synthesized for Basic Blue 3 dye and applied to wastewater for the adsorption of a target template. The MIPs were synthesized by bulk polymerization using methacrylic acid (MAA) and ethylene glycol dimethacrylate (EGDMA). Basic Blue 3 dye (BB-3), 2,2'-azobisisobutyronitrile (AIBN) and methanol were used as a functional monomer, cross linker, template, initiator and porogenic solvent, respectively, while non-imprinting polymers (NIP) were synthesized by the same procedure but without template molecules. The contact time was 25 min for the adsorption of BB-3 dye from 10 mL of spiked solution using 25 mg polymer. The adsorption of dye (BB-3) on the MIP followed the pseudo-second order kinetic (k2 = 0.0079 mg·g-1·min-1), and it was according to the Langmuir isotherm, with maximum adsorption capacities of 78.13, 85.4 and 99.0 mg·g-1 of the MIP at 283 K, 298 K and 313 K, respectively and 7 mg·g-1 for the NIP. The negative values of ΔG° indicate that the removal of dye by the molecularly imprinting polymer and non-imprinting polymer is spontaneous, and the positive values of ΔH° and ΔS° indicate that the process is endothermic and occurred with the increase of randomness. The selectivity of the MIP for BB-3 dye was investigated in the presence of structurally similar as well as different dyes, but the MIP showed higher selectivity than the NIP. The imprinted polymer showed 96% rebinding capacity at 313 K towards the template, and the calculated imprinted factor and Kd value were 10.73 and 2.62, respectively. In this work, the MIP showed a greater potential of selectivity for the template from wastewater relative to the closely similar compounds.


Assuntos
Impressão Molecular , Corantes , Impressão Molecular/métodos , Oxazinas , Polímeros/química , Águas Residuárias
4.
Molecules ; 27(11)2022 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-35684464

RESUMO

Anabasis articulata is medicinally used to treat various diseases. In this study, A. articulata was initially subjected to extraction, and the resultant extracts were then evaluated for their antimicrobial, antioxidant, and antidiabetic potentials. After obtaining the methanolic extract, it was subjected to a silica gel column for separation, and fractions were collected at equal intervals. Out of the obtained fractions (most rich in bioactive compounds confirmed through HPLC), designated as A, B, C, and D as well hexane fraction, were subjected to GC-MS analysis, and a number of valuable bioactive compounds were identified from the chromatograms. The preliminary phytochemical tests were positive for the extracts where fraction A exhibited the highest total phenolic and flavonoid contents. The hexane fraction as antimicrobial agent was the most potent, followed by the crude extract, fraction A, and fraction D. DPPH and ABTS assays were used to estimate the free radical scavenging potential of the extracts. Fraction C was found to contain potent inhibitors of both the tested radicals, followed by fraction D. The potential antidiabetic extracts were determined using α-glucosidase and amylase as probe enzymes. The former was inhibited by crude extract, hexane, and A, B, C and D fractions to the extent of 85.32 ± 0.20, 61.14 ± 0.49, 62.15 ± 0.84, 78.51 ± 0.45, 72.57 ± 0.92 and 70.61 ± 0.91%, respectively, at the highest tested concentration of 1000 µg/mL with their IC50 values 32, 180, 200, 60, 120 and 140 µg/mL correspondingly, whereas α-amylase was inhibited to the extent of 83.98 ± 0.21, 58.14 ± 0.75, 59.34 ± 0.89, 81.32 ± 0.09, 74.52 ± 0.13 and 72.51 ± 0.02% (IC50 values; 34, 220, 240, 58, 180, and 200 µg/mL, respectively). The observed biological potentials might be due to high phenolic and flavonoid content as detected in the extracts. The A. articulata might thus be considered an efficient therapeutic candidate and could further be investigated for other biological potentials along with the isolation of pure responsible ingredients.


Assuntos
Antioxidantes , Chenopodiaceae , Antibacterianos/farmacologia , Antioxidantes/química , Flavonoides/química , Hexanos , Hipoglicemiantes/química , Hipoglicemiantes/farmacologia , Fenóis/análise , Compostos Fitoquímicos/química , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/química
5.
Molecules ; 27(18)2022 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-36144735

RESUMO

Dipeptidyl peptidase-IV (DPP-IV) inhibitors, often known as gliptins, have been used to treat type 2 diabetes mellitus (T2DM). They may be combined with other medications as an additional treatment or used alone as a monotherapy. In addition to insulin, sulfonylureas, thiazolidinediones, and metformin, these molecules appear as possible therapeutic options. Oxadiazole rings have been employed in numerous different ways during drug development efforts. It has been shown that including them in the pharmacophore increases the amount of ligand that may be bound. The exceptional hydrogen bond acceptor properties of oxadiazoles and the distinct hydrocarbon bonding potential of their regioisomers have been established. Beside their anti-diabetic effects, oxadiazoles display a wide range of pharmacological properties. In this study, we made the assumption that molecules containing oxadiazole rings may afford a different approach to the treatment of diabetes, not only for controlling glycemic levels but also for preventing atherosclerosis progression and other complications associated with diabetes. It was observed that oxadiazole fusion with benzothiazole, 5-(2,5,2-trifluoroethoxy) phenyl, ß-homophenylalanine, 2-methyl-2-{5-(4-chlorophenyl), diamine-bridged bis-coumarinyl, 5-aryl-2-(6'-nitrobenzofuran-2'-yl), nitrobenzofuran, and/or oxindole leads to potential anti-diabetic activity.


Assuntos
Diabetes Mellitus Tipo 2 , Inibidores da Dipeptidil Peptidase IV , Metformina , Tiazolidinedionas , Benzotiazóis/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Diaminas , Inibidores da Dipeptidil Peptidase IV/farmacologia , Inibidores da Dipeptidil Peptidase IV/uso terapêutico , Dipeptidil Peptidases e Tripeptidil Peptidases , Humanos , Hipoglicemiantes/farmacologia , Hipoglicemiantes/uso terapêutico , Insulina/uso terapêutico , Ligantes , Metformina/uso terapêutico , Oxidiazóis/farmacologia , Oxidiazóis/uso terapêutico , Oxindóis , Tiazolidinedionas/uso terapêutico
6.
Molecules ; 27(15)2022 Jul 23.
Artigo em Inglês | MEDLINE | ID: mdl-35897890

RESUMO

Indigofera linifolia is a medicinally important plant, and by virtue of its rich phytochemical composition, this plant is widely used as essential component in traditional medication systems. Due to its wide range of medicinal applications, the extract-loaded chitosan (Ext+Ch), extract-loaded PEG (Ext+PEG), and extract-loaded locust bean gum (Ext+LGB) nanoparticles (NPs) were prepared in the present study. The prepared NPs were then evaluated for their antibacterial, antioxidant, and antidiabetic potentials. Antibacterial activities of the crude extract and the synthesized NPs were performed following standard procedures reported in the literature. The antioxidant capabilities of extract and NPs were evaluated using DPPH free radical scavenging assay. The antidiabetic potential of the samples was evaluated against α-amylase and α-glucosidase. Ext+PEG NPs showed more potent antibacterial activity against the selected strains of bacteria with the highest activity against Escherichia coli. The lowest antibacterial potential was observed for Ext+LGB NPs. The Ext+LGB NPs IC50 value of 39 µg/mL was found to be the most potent inhibitor of DPPH free radicals. Ext+LGB NPs showed a greater extent of inhibition against α-glucosidase and α-amylase with an IC50 of 83 and 78 µg/mL, whereas for the standard acarbose the IC50 values recorded against the mentioned enzymes were 69 and 74 µg/mL, respectively. A high concentration of phenolics and flavonoids in the crude extract was confirmed through TPC and TFC tests, HPLC profiling, and GC-MS analysis. It was considered that the observed antibacterial, antidiabetic, and antioxidant potential might be due the presence of these phenolics and flavonoids detected. The plant could thus be considered as a potential candidate to be used as a remedy of the mentioned health complications. However, further research in this regard is needed to isolate the exact responsible compounds of the observed biological potentials exhibited by the crude extract. Further, toxicity and pharmacological evaluations in animal models are also needed to establish the safety or toxicity profile of the plant.


Assuntos
Indigofera , Nanopartículas , Animais , Antibacterianos/farmacologia , Antioxidantes/química , Flavonoides/análise , Flavonoides/farmacologia , Hipoglicemiantes/química , Hipoglicemiantes/farmacologia , Fenóis/análise , Compostos Fitoquímicos/farmacologia , Extratos Vegetais/química , Extratos Vegetais/farmacologia , alfa-Amilases , alfa-Glucosidases
7.
Molecules ; 27(14)2022 Jul 21.
Artigo em Inglês | MEDLINE | ID: mdl-35889532

RESUMO

A brain tumor (BT) is a condition in which there is growth or uncontrolled development of the brain cells, which usually goes unrecognized or is diagnosed at the later stages. Since the mechanism behind BT is not clear, and the various physiological conditions are difficult to diagnose, the success rate of BT is not very high. This is the central issue faced during drug development and clinical trials with almost all types of neurodegenerative disorders. In the first part of this review, we focus on the concept of brain tumors, their barriers, and the types of delivery possible to target the brain cells. Although various treatment methods are available, they all have side effects or toxic effects. Hence, in the second part, a correlation was made between the use of resveratrol, a potent antioxidant, and its advantages for brain diseases. The relationship between brain disease and the blood-brain barrier, multi-drug resistance, and the use of nanomedicine for treating brain disorders is also mentioned. In short, a hypothetical concept is given with a background investigation into the use of combination therapy with resveratrol as an active ingredient, the possible drug delivery, and its formulation-based approach.


Assuntos
Neoplasias Encefálicas , Estilbenos , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Encéfalo , Neoplasias Encefálicas/tratamento farmacológico , Sistemas de Liberação de Medicamentos , Humanos , Preparações Farmacêuticas , Resveratrol/uso terapêutico , Estilbenos/farmacologia , Estilbenos/uso terapêutico
8.
Chaos Solitons Fractals ; 148: 111030, 2021 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34002105

RESUMO

In this article, we are studying fractional-order COVID-19 model for the analytical and computational aspects. The model consists of five compartments including; ` ` S c ″ which denotes susceptible class, ` ` E c ″ represents exposed population, ` ` I c ″ is the class for infected people who have been developed with COVID-19 and can cause spread in the population. The recovered class is denoted by ` ` R c ″ and ` ` V c ″ is the concentration of COVID-19 virus in the area. The computational study shows us that the spread will be continued for long time and the recovery reduces the infection rate. The numerical scheme is based on the Lagrange's interpolation polynomial and the numerical results for the suggested model are similar to the integer order which gives us the applicability of the numerical scheme and effectiveness of the fractional order derivative.

9.
Malar J ; 16(1): 115, 2017 03 13.
Artigo em Inglês | MEDLINE | ID: mdl-28288639

RESUMO

BACKGROUND: Non-human primates, such as the rhesus macaques, are the preferred model for down-selecting human malaria vaccine formulations, but the rhesus model is expensive and does not allow for direct efficacy testing of human malaria vaccines. Transgenic rodent parasites expressing genes of human Plasmodium are now routinely used for efficacy studies of human malaria vaccines. Mice have however rarely predicted success in human malaria trials and there is scepticism whether mouse studies alone are sufficient to move a vaccine candidate into the clinic. METHODS: A comparison of immunogenicity, fine-specificity and functional activity of two Alum-adjuvanted Plasmodium falciparum circumsporozoite protein (CSP)-based vaccines was conducted in mouse and rhesus models. One vaccine was a soluble recombinant protein (CSP) and the other was the same CSP covalently conjugated to the Qß phage particle (Qß-CSP). RESULTS: Mice showed different kinetics of antibody responses and different sensitivity to the NANP-repeat and N-terminal epitopes as compared to rhesus. While mice failed to discern differences between the protective efficacy of CSP versus Qß-CSP vaccine following direct challenge with transgenic Plasmodium berghei parasites, rhesus serum from the Qß-CSP-vaccinated animals induced higher in vivo sporozoite neutralization activity. CONCLUSIONS: Despite some immunologic parallels between models, these data demonstrate that differences between the immune responses induced in the two models risk conflicting decisions regarding potential vaccine utility in humans. In combination with historical observations, the data presented here suggest that although murine models may be useful for some purposes, non-human primate models may be more likely to predict the human response to investigational vaccines.


Assuntos
Vacinas Antimaláricas/imunologia , Plasmodium falciparum/imunologia , Proteínas de Protozoários/imunologia , Animais , Feminino , Imunogenicidade da Vacina , Macaca mulatta , Masculino , Camundongos , Camundongos Endogâmicos C57BL , Proteínas Recombinantes/imunologia
10.
Pak J Pharm Sci ; 29(2): 503-10, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27087095

RESUMO

Ranunculus muricatus is commonly known as spiny fruit buttercup and is used in the treatment of intermittent fevers, gout and asthma. Qualitative analysis of phytochemicals of Ranunculus muricatus indicated the presence of saponins, tannins, phenols, flavonoids and alkaloids. Saponins were present in high amount as compared with other chemicals. Inorganic and heavy metals constituents were determined. Heavy metals estimation in the sample showed that iron was present in high amount followed by zinc even then the concentration of these metals is below acceptable limit. The physical parameters, antioxidant and antimicrobial activities of the extracts were determined. Acetone extract fraction showed optimal antioxidant activity as compared to ethanol and chloroform fractions of the candidate plant. The antimicrobial and antifungal activities of the crude extract and extract fractions were determined by well agar diffusion method. Highest zone of inhibitions were observed for crude extract followed by acetone extract fraction against Micrococcus luteus. Antifungal activities were high for crude extracts against Candida Albican. Findings of this study show that Ranunculus muricatus has a good medicinal impact.


Assuntos
Antibacterianos/farmacologia , Antifúngicos/farmacologia , Antioxidantes/farmacologia , Extratos Vegetais/farmacologia , Ranunculus/química , Antibacterianos/isolamento & purificação , Antifúngicos/isolamento & purificação , Antioxidantes/isolamento & purificação , Compostos de Bifenilo/química , Candida albicans/efeitos dos fármacos , Candida albicans/crescimento & desenvolvimento , Testes de Sensibilidade a Antimicrobianos por Disco-Difusão , Micrococcus luteus/efeitos dos fármacos , Micrococcus luteus/crescimento & desenvolvimento , Picratos/química , Extratos Vegetais/isolamento & purificação , Solventes/química
11.
BMC Vet Res ; 10: 255, 2014 Oct 30.
Artigo em Inglês | MEDLINE | ID: mdl-25358625

RESUMO

BACKGROUND: Aflatoxins are serious hazard to poultry industry and human health. Broiler chickens fed on aflatoxin contaminated feed develop various abnormal signs and behavior including less attraction toward feed, abnormal faeces consistency, growth retardation, dirty and ruffled feather, abnormal organs size and weight and blood serum biochemistry. Therefore the study was aimed to detoxify aflatoxin B1 in poultry feed. In this study a novel adsorbent was prepared from bagasse, characterized in vitro and in vivo it was fed to different groups of poultry birds along with aflatoxin B1. The groups were given arbitrary names A, B, C, D, E and F. Group A was fed with normal decontaminated feed, group B was fed with aflatoxin contaminated (200 µg/kg feed) feed while the groups C, D, E and F were fed with aflatoxin contaminated (200 µg/kg feed) feed plus 0.2, 0.3, 0.4 and 0.5% adsorbent respectively. Clinical signs and behavior of the chicks; blood level of alanine transferase, alkaline phosphatase, serum albumen, serum total proteins and serum globulin; Mortality; Body and organ weights; Hemorrhages in organs etc. were monitored in order to study the efficacy of the adsorbent for binding of aflatoxin B1 in the gastrointestinal tract of chickens. Statistical approach was adopted to analyze the data. RESULTS: It was found that adsorbent amount 0.3%/kg feed was highly effective to adsorb and detoxify aflatoxin B1 in gastrointestinal tract of broiler chickens and pass safely leaving no harmful effects. However the results of groups E and F fed on 0.4% and 0.5% respectively showed slight variation in tested parameters from group A. CONCLUSIONS: The prepared adsorbent was efficient for the detoxification of aflatoxin B1 in gastrointestinal tract of chicks and no negative symptoms associated with the use of activated carbon as previously reported were observed for the adsorbent under study.


Assuntos
Aflatoxina B1/toxicidade , Carbono/química , Celulose/química , Galinhas , Nanoestruturas/química , Doenças das Aves Domésticas/induzido quimicamente , Adsorção , Aflatoxina B1/química , Alanina Transaminase/sangue , Fosfatase Alcalina/sangue , Ração Animal/análise , Animais , Proteínas Sanguíneas , Dieta/veterinária , Contaminação de Alimentos , Globulinas/metabolismo , Fígado/efeitos dos fármacos , Fenômenos Magnéticos , Tamanho do Órgão/efeitos dos fármacos , Doenças das Aves Domésticas/sangue , Doenças das Aves Domésticas/prevenção & controle
12.
Cureus ; 16(4): e59191, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38807811

RESUMO

Allergic rhinitis (AR) and nasal polyps (NP) are common inflammatory disorders of the upper airways that often coexist and significantly impact patients' quality of life. This comprehensive review explores the intricate relationship between AR and NP, elucidating the underlying mechanisms, clinical manifestations, and management strategies. Immunological mechanisms, genetic predispositions, and environmental factors contribute to the development and progression of both conditions. Pharmacological therapies, including intranasal corticosteroids and biologic agents, are cornerstone treatments for managing AR with NP. At the same time, surgical interventions such as functional endoscopic sinus surgery (FESS) may be necessary in refractory cases. Emerging therapies, including immunomodulatory agents and precision medicine approaches, hold promise in improving treatment outcomes. A multidisciplinary approach, personalized treatment plans, and patient education are essential for optimizing clinical practice. Future research should focus on identifying novel therapeutic targets, conducting large-scale clinical trials, exploring precision medicine approaches, and investigating the role of the microbiome. Addressing these research priorities and implementing evidence-based treatment strategies can improve outcomes for patients with AR and NP.

13.
Malar J ; 12: 29, 2013 Jan 23.
Artigo em Inglês | MEDLINE | ID: mdl-23342996

RESUMO

BACKGROUND: The development of an asexual blood stage vaccine against Plasmodium falciparum malaria based on the major merozoite surface protein-1 (MSP1) antigen is founded on the protective efficacy observed in preclinical studies and induction of invasion and growth inhibitory antibody responses. The 42 kDa C-terminus of MSP1 has been developed as the recombinant protein vaccine antigen, and the 3D7 allotype, formulated with the Adjuvant System AS02A, has been evaluated extensively in human clinical trials. In preclinical rabbit studies, the FVO allele of MSP142 has been shown to have improved immunogenicity over the 3D7 allele, in terms of antibody titres as well as growth inhibitory activity of antibodies against both the heterologous 3D7 and homologous FVO parasites. METHODS: Two Phase 1 clinical studies were conducted to examine the safety, reactogenicity and immunogenicity of the FVO allele of MSP142 in the adjuvant system AS01 administered intramuscularly at 0-, 1-, and 2-months: one in the USA and, after evaluation of safety data results, one in Western Kenya. The US study was an open-label, dose escalation study of 10 and 50 µg doses of MSP142 in 26 adults, while the Kenya study, evaluating 30 volunteers, was a double-blind, randomized study of only the 50 µg dose with a rabies vaccine comparator. RESULTS: In these studies it was demonstrated that this vaccine formulation has an acceptable safety profile and is immunogenic in malaria-naïve and malaria-experienced populations. High titres of anti-MSP1 antibodies were induced in both study populations, although there was a limited number of volunteers whose serum demonstrated significant inhibition of blood-stage parasites as measured by growth inhibition assay. In the US volunteers, the antibodies generated exhibited better cross-reactivity to heterologous MSP1 alleles than a MSP1-based vaccine (3D7 allele) previously tested at both study sites. CONCLUSIONS: Given that the primary effector mechanism for blood stage vaccine targets is humoral, the antibody responses demonstrated to this vaccine candidate, both quantitative (total antibody titres) and qualitative (functional antibodies inhibiting parasite growth) warrant further consideration of its application in endemic settings. TRIAL REGISTRATIONS: Clinical Trials NCT00666380.


Assuntos
Anticorpos Antiprotozoários/imunologia , Antígenos de Protozoários/imunologia , Vacinas Antimaláricas/administração & dosagem , Malária Falciparum/prevenção & controle , Proteína 1 de Superfície de Merozoito/imunologia , Plasmodium falciparum/imunologia , Adjuvantes Imunológicos , Adulto , Formação de Anticorpos , Reações Cruzadas/imunologia , Método Duplo-Cego , Ensaio de Imunoadsorção Enzimática , Feminino , Humanos , Injeções Intramusculares , Vacinas Antimaláricas/efeitos adversos , Malária Falciparum/imunologia , Malária Falciparum/parasitologia , Masculino
14.
J Pediatr Gastroenterol Nutr ; 56(1): 12-8, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22847466

RESUMO

OBJECTIVES: Despite a paucity of published supporting data, 5-aminosalicylate (5-ASA) use in pediatric ulcerative colitis (UC) is common. The present study describes the use and outcome of a large multicenter inception cohort of children with UC treated with 5-ASA. METHODS: Data were obtained from the Pediatric Inflammatory Bowel Disease Collaborative Research Group Registry, a prospective North American observational study of children newly diagnosed as having inflammatory bowel disease ages 16 years or younger. Patient data are recorded at diagnosis, 30 days, and then quarterly. Patients are managed by physician dictate, not protocol. Disease activity is classified by physician global assessment. The primary outcome examined was corticosteroid (CS) free, inactive UC at 1 year following initiation of 5-ASA within 30 days of diagnosis (with or without concomitant CS use) without the need for rescue therapy (immunomodulators, biologics, or colectomy). RESULTS: Study subjects included 213 patients newly diagnosed as having UC who received oral 5-ASA compounds (115 of whom also received CS) during the first 30 days after diagnosis, and no other oral therapies for the treatment of UC. Of these 213 patients, 86 (40%) were CS free and physician global assessment inactive at 1 year without rescue. Outcome was not associated with disease severity at diagnosis, demographic or laboratory factors examined, or initial dose of 5-ASA used. CONCLUSIONS: Forty percent of children taking 5-ASA as primary maintenance therapy at diagnosis are in CS-free remission after 1 year of treatment. Further pediatric studies will be needed to address whether increased adherence and/or higher dosing schedules will improve outcomes.


Assuntos
Anti-Inflamatórios não Esteroides/uso terapêutico , Colite Ulcerativa/tratamento farmacológico , Mesalamina/uso terapêutico , Adolescente , Corticosteroides/uso terapêutico , Criança , Feminino , Humanos , Masculino , Estudos Prospectivos , Indução de Remissão , Resultado do Tratamento
15.
Indian J Sex Transm Dis AIDS ; 44(1): 64-65, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37457529

RESUMO

Vulvar vestibular papillomatosis (VP) is considered a normal anatomical variant of the vulva. We present a 19-year-old girl with a history of "small itchy growths" on the vulva for 2 months without any associated discharge. These lesions were causing significant anxiety to the patient. Cutaneous examination revealed multiple, uniformly arranged, skin-colored, monomorphic micropapillae on the inner aspect of the labia minora. Biopsy showed mucosal hyperplasia with papillomatosis and loosely arranged subdermal tissue, no koilocytes were spotted. The diagnosis of vulvar VP was made. We want to highlight this clinical entity as most dermatologists are not familiar with this benign condition and easily confuse it with genital warts. This inexperience may result in unnecessary investigations causing psychological discomfort to the patient. We herein present such a case which brings out the diagnostic dilemma.

16.
SAGE Open Med Case Rep ; 11: 2050313X231193983, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37605746

RESUMO

Dengue is an endemic viral fever transmitted by mosquitoes that may be asymptomatic or cause a nonspecific flu-like illness. The disease's most severe manifestations are dengue hemorrhagic fever and dengue shock syndrome. Various atypical manifestations have been observed that constitute the expanded dengue syndrome. Although uncommon, it is now known to cause cardiac complications that can be life-threatening and difficult to diagnose. We illustrate a case of a 16-year-old boy infected with dengue who experienced syncope, dizziness, and lethargy. His electrocardiogram showed third degree atrioventricular block which did not resolve with atropine and fluid resuscitation. After excluding all possible causes of complete heart block, transvenous pacing was done. A detailed workup was carried out that favored a diagnosis of subclinical myocarditis leading to complete heart block. The patient did not regain a normal rhythm and was considered for permanent pacemaker implantation. Myocarditis, pericarditis, rhythm disturbances, first- and second-degree atrioventricular blocks, and rarely third-degree heart blocks have been seen in dengue patients. However, a case of dengue illness associated complete heart blocks that is irreversible and necessitates a permanent pacemaker has never been described in the literature, and this is the first such case being reported. This article intends to increase clinicians' awareness, particularly those in dengue-endemic regions, about better recognition and comprehension of cardiac problems associated with dengue fever.

17.
PeerJ ; 11: e16179, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37941932

RESUMO

Cultivation of high-yield varieties and unbalanced fertilization have induced micronutrient deficiency in soils worldwide. Zinc (Zn) is an essential nutrient for plant growth and its deficiency is most common in alkaline and calcareous soils. Therefore, this study aimed to evaluate the effect of Zn applied either alone or in combination with foliar application on the quality and production of wheat grown in alkaline soils. Zn was applied in the form of zinc sulfate (ZnSo4) to the soil and as a foliar spray during the sowing and tillering stages, respectively. Results showed that Zn fertilization of wheat, irrespective of modes of application, significantly increased grain and biological yield, grain per spike, and 1,000 grains weight over control; however, its effect was more noticeable when applied as 7.5 kg ha-1 of soil Zn combined with foliar Zn at 2.5 kg ha-1. Zn application significantly increased the grain protein content from 9.40% in the control to a maximum of 11.83% at soil Zn of 10 kg ha-1. Similarly, Zn application improved Zn, phosphorus (P), and potassium (K) concentrations in wheat grains. Moreover, correlation analysis showed that the grain Zn concentration was positively correlated with the grain P concentration. The correlation between P concentration in wheat grains and 1,000 grain weight was not significant. A total of 1,000 grains weight was positively correlated with tillers per plant, grain yield, and biological yield. There were positive correlations between protein content, biological yield, grain yield, and tillers per plant. Therefore, soil-applied Zn + foliar application in alkaline soils with limited Zn availability is crucial for improving wheat yield and grain quality.


Assuntos
Solo , Zinco , Zinco/análise , Triticum , Sulfato de Zinco/metabolismo , Grão Comestível/química
18.
Biotechnol Genet Eng Rev ; 39(1): 118-142, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35876332

RESUMO

Diabetic retinopathy is one of the withering disorders that has been making the lives of patients miserable. Arising as a result of chronic high blood sugar levels in diabetes patients, retinopathy has become a major reason causing permanent blindness, retinal detachment, vitreous humor, rage, or glaucoma among patients. Angiogenesis being the major culprit behind the development of this condition is the growth of new blood vessels from the earlier ones existing. The abnormal growth and poor development of blood vessels also lead to aggravation of the conditions, with vascular endothelial growth factor (VEGF) playing a major role in the process. Various anti-angiogenic therapies or anti-VEGF therapies are being explored for the treatment of this condition. 4 widely explored drugs being-Bevacizumab, pegaptanib sodium, ranibizumab, and aflibercept. The review article tries to summarize studies illustrating the efficacy of these drugs in the treatment of diabetic retinopathy along with some of the herbal therapeutic paradigms displaying anti-angiogenic action that is being used to treat this condition.


Assuntos
Diabetes Mellitus , Retinopatia Diabética , Humanos , Retinopatia Diabética/tratamento farmacológico , Inibidores da Angiogênese/uso terapêutico , Fator A de Crescimento do Endotélio Vascular/uso terapêutico , Ranibizumab/uso terapêutico , Desenvolvimento de Medicamentos , Proteínas Recombinantes de Fusão/uso terapêutico , Diabetes Mellitus/tratamento farmacológico
19.
Cureus ; 14(5): e24868, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35702480

RESUMO

Tuberculosis (TB) is caused by Mycobacterium tuberculosis, an acid-fast bacillus that is predominantly transmitted through the respiratory system. Although TB most commonly infects the lungs, it may also affect other organs, resulting in secondary extrapulmonary TB. Extrapulmonary TB may occur alone or in conjunction with a primary pulmonary focus, such as disseminated TB resulting from self-inoculation with infected sputum, blood, or lymphatics. The lymph nodes are the most commonly seen extrapulmonary sites of TB. Oropharyngeal tubercular lesions are infrequent, and primary TB of the oropharynx is even more uncommon. Here, we present an unusual case of oropharyngeal TB in a young immunocompetent patient occurring without any evidence of pulmonary TB or cervical lymphadenopathy.

20.
Cureus ; 14(7): e27068, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-36000105

RESUMO

Chronic otitis media is generally more prevalent in individuals with a weakly pneumatized temporal bone, whereas acute otitis media has a propensity for pneumatized temporal bone. Antimicrobial drugs are thought to have influenced the incidence and progression of middle ear infections. The mastoid air cell system, a part of the middle ear cleft, has recently been recognized as a crucial factor in the genesis, behaviour, course, and outcome of middle ear inflammatory conditions. Epithelium infiltrates the growing bone and produces epithelium-lined air cell chambers, a process known as pneumatization. Conventional temporal bone radiography, i.e. X-ray mastoid, has not kept up with recent otology breakthroughs. Detailed visualization of the aural structures has advanced significantly with the introduction of high-resolution computed tomography (HRCT). HRCT has a clear edge in the assessment of the temporal bone, especially when thin-section, high-resolution methods are used, resulting in a more precise description of the pneumatization pattern and the anatomical extent of middle ear pathology. Our results of the review indicated that persistent inflammation of the middle ear in children inhibits pneumatization of the temporal bone. Due to its potential to exert a greater negative middle ear pressure, the middle ear volume is insufficient to generate a retraction pocket; thus, the size and state of the antrum is also a significant factor in the establishment of a COM-like retraction pocket in inactive squamosal disease. Numerous factors, including the number of patients, regional, genetic, ethnic and hereditary characteristics, as well as the cellularity of the mastoid, which is impacted by a multitude of factors, may account for the variable reports and inter-study variation in this regard.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA