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1.
J Oncol Pharm Pract ; : 10781552241242022, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38576408

RESUMO

OBJECTIVE: Relapsed/refractory multiple myeloma (MM) has poor outcomes, especially in heavily pretreated patients. Limited data exists on the use of novel therapies in MM patients with renal dysfunction. This case series describes the successful initiation of teclistamab in four patients with heavily pre-treated MM on hemodialysis (HD). DATA SOURCES: The medical records of four adult MM patients on HD who received teclistamab were retrospectively reviewed. DATA SUMMARY: All patients completed teclistamab step-up dosing and received at least one full dose. HD runs were administered irrespective of teclistamab initiation. Patients tolerated therapy well, with only one patient experiencing grade 1 CRS, which was managed with supportive care. CONCLUSIONS: Due to the complexity of this patient population, close monitoring and multidisciplinary care are crucial. This approach is essential for effectively managing MM patients with renal dysfunction and for exploring novel treatment options.

2.
J Oncol Pharm Pract ; 28(5): 1140-1151, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-34120514

RESUMO

INTRODUCTION: The recently published FLAURA trial demonstrated that osimertinib has remarkable efficacy in front-line setting for non-small cell lung cancer (NSCLC). While this has transformed current practice, there are no effective treatments following progression on osimertinib. The aim of our study was to compare progression-free survival (PFS) and overall survival (OS) between patients initiated on osimertinib to those started on other EGFR TKIs. METHODS: This was a multicenter, retrospective study conducted at two large academic centers. Adult patients with EGFR-mutated non-small cell lung cancer (NSCLC) who received EGFR therapy between 2014 and 2019 were included. Patients were dichotomized based on front-line TKI (osimertinib vs. other). PFS, OS, and time-to-discontinuation were evaluated. RESULTS: One-hundred seventy-two patients were included in the final analysis. Fifty-two (30.2%) patients received osimertinib and 120 (69.8%) patients received another EGFR TKI. The PFS rates at 6, 12, and 18 months were 86.3%, 79.5%, 69.8% in the osimertinib group and 86.6%, 64.2%, 39.3% in the other EGFR TKI group, respectively (p < 0.0036).Estimated OS at 6, 12, and 18 months was similar for both groups: 94.2%, 94.2%, 80.2% and 95.7%, 93.9%, 84.1%, respectively [Adjusted HR = 0.95 (95% CI, 0.37-2.44; p < 0.9128]. CONCLUSION: Osimertinib demonstrated greater 12 and 18 month PFS compared to other EGFR TKIs. This finding is consistent with results of the FLAURA trial. However, unlike FLAURA, there were no differences in estimated OS between the two groups in our study. Further research to evaluate optimal sequencing strategies in the real world of first, second and third generation TKIs is needed.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Adulto , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Estudos Retrospectivos , Receptores ErbB/genética , Mutação
3.
Saudi Pharm J ; 30(9): 1243-1251, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36249940

RESUMO

Generic drugs or generic medicines are pharmaceutical products manufactured to be equivalent to the brand/innovator drug products. They represent the majority of worldwide prescribed medicines; therefore, their quality is critical to maximize patients' therapeutic outcomes. This study aimed to evaluate the pharmaceutical equivalency of locally and regionally manufactured generic pharmaceutical products being sold in the United Arab Emirates (UAE) market to enhance public confidence, promote their utilization, and reduce treatment costs. Three drugs (tadalafil, rosuvastatin, and acetaminophen) from three different pharmacological classes were selected from the UAE market as representatives for generic drugs. At least two generic products for each locally (L) and regionally (R) manufactured generic were evaluated according to the USP criteria in comparison to the brand (B) comparator product. All comparative tests were performed before storage and 3 and 6 months after storage during the accelerated stability study performed under the conditions for climatic zone IV (40 °C ± 2 °C /75% RH ± 5% RH). Although results were statistically different from the comparators using ANOVA and Tukey's Kremer post hoc tests, all tests were within the USP acceptance limits, except one, for friability, disintegration, content uniformity, and dissolution. Significant changes were observed following their storage over 6 months during accelerated stability studies, however, without failing the USP limits. Only one locally manufactured acetaminophen generic failed the USP dissolution tests before and after its storage and failed the disintegration test following its storage under accelerated conditions for zone IV. In conclusion, the majority of the locally and regionally manufactured generic products being sold in the UAE market were of good quality and performed similarly to their comparators. However, a continuous independent quality evaluation for the marketed generic drugs is essential to enhance public confidence.

4.
BMC Health Serv Res ; 21(1): 477, 2021 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-34016124

RESUMO

BACKGROUND: Yemen that has been devastated by war is facing various challenges to respond to the recent potential outbreaks and other public health emergencies due to lack of proper strategies and regulations, which are essential to public health security. The aim of this study is to assess the implementation of the International Health Regulations (IHR 2005) core capacities under the current ongoing conflict in Yemen. METHODS: The study simulated the World Health Organization (WHO) Joint External Evaluation (JEE) tool to assess the IHR core capacities in Yemen. Qualitative research methods were used, including desk reviews, in-depth interviews with key informants and analysis of the pooled data. RESULT: Based on the assessment of the three main functions of the IHR framework (prevention, detection, and response), Yemen showed a demonstrated or developed capacity to detect outbreaks, but nevertheless limited or no capacity to prevent and respond to outbreaks. CONCLUSION: This study shows that there has been poor implementation of IHR in Yemen. Therefore, urgent interventions are needed to strengthen the implementation of the IHR core capacities in Yemen. The study recommends 1) raising awareness among national and international health staff on the importance of IHR; 2) improving alignment of INGO programs with government health programs and aligning both towards better implementation of the IHR; 3) improving programmatic coordination, planning and implementation among health stakeholders; 4) increasing funding of the global health security agenda at country level; 5) using innovative approaches to analyze and address gaps in the disrupted health system, and; 6) addressing the root cause of the collapse of the health services and overall health system in Yemen by ending the protracted conflict situation.


Assuntos
Cooperação Internacional , Regulamento Sanitário Internacional , Surtos de Doenças/prevenção & controle , Saúde Global , Humanos , Saúde Pública , Organização Mundial da Saúde , Iêmen/epidemiologia
5.
J Biochem Mol Toxicol ; 34(5): e22465, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32048413

RESUMO

Treatment with Lipitor is associated with several adverse impacts. Here we investigated the effects of low Lipitor nanoparticles (atorvastatin calcium nanopartilcle [AC-NP]), with size less than 100 , on enzymes of lipid metabolism and inflammation in cardiac, hepatic, and brain tissues of hypercholestremic adult male rats. Adult male rats were divided into five experimental groups. In group 1, the intact control (normal pellet diet), animals were fed a normal control diet; the other four groups were fed a high-fat diet (HFD) for 6 weeks. After 6 weeks, groups from 2 to 5 were assigned as a positive control (HFD), HFD + Lipitor, HFD + AC-NP-R1, or HFD + AC-NP-R2. Different treatments were administrated orally for two regimen periods (R1 daily and R2 once every 3 days). The treatment was conducted for two consecutive weeks. The HFD group faced a significant elevation in 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA), associated with a significant reduction in low-density lipoprotein receptor (LDL-R) along with cholesterol 7 α-hydroxylase enzyme in hepatic tissues, compared with the control group. Also, the HFD group induced hepatic, cardiac, and brain inflammation, evidenced by increased hepatic oxidative stress markers and cardiac homocysteine, together with elevated proinflammatory cytokines interleukin-1ß (IL-1ß) and IL-6 levels in brain tissue, compared with the control group. Different AC-NP treatments significantly augmented both mRNA LDL-R and mRNA 7α-hydroxylase expression in hepatic tissues, associated with significant depletion in mRNA HMG-CoA expression, compared with HFD + Lipitor. The inflammation symptoms were ameliorated by the AC-NP treatments, compared to HFD + Lipitor. Lipitor encapsulation in NP formulation results in increased efficiency and reduced dose-related adverse effects known to be associated with the Lipitor chronic administration.


Assuntos
Acil Coenzima A/metabolismo , Atorvastatina/administração & dosagem , Colesterol 7-alfa-Hidroxilase/metabolismo , Dieta Hiperlipídica/efeitos adversos , Encefalite/tratamento farmacológico , Encefalite/etiologia , Inibidores de Hidroximetilglutaril-CoA Redutases/administração & dosagem , Miocardite/tratamento farmacológico , Miocardite/etiologia , Nanopartículas/administração & dosagem , Animais , Encéfalo/metabolismo , Citocinas/metabolismo , Sistemas de Liberação de Medicamentos/métodos , Hepatite/tratamento farmacológico , Hepatite/etiologia , Masculino , Ratos , Receptores de LDL/metabolismo , Resultado do Tratamento
6.
Saudi Pharm J ; 28(7): 876-887, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32647490

RESUMO

In modern drug delivery, seeking a drug delivery system (DDS) with a modifiable skeleton for proper targeting of loaded actives to specific sites in the body is of extreme importance for a successful therapy. Magnetically guided nanosystems, where particles such as iron oxides are guided to specific regions using an external magnetic field, can provide magnetic resonance imaging (MRI) while delivering a therapeutic payload at the same time, which represents a breakthrough in disease therapy and make MNPs excellent candidates for several biomedical applications. In this review, magnetic nanoparticles (MNPs) along with their distinguishable properties, including pharmacokinetics and toxicity, especially in cancer therapy will be discussed. The potential perspective of using other elements within the MNP system to reduce toxicity, improve pharmacokinetics, increase the magnetization ability, improve physical targeting precision and/or widen the scope of its biomedical application will be also discussed.

7.
Mol Pharm ; 15(8): 3478-3488, 2018 08 06.
Artigo em Inglês | MEDLINE | ID: mdl-29953815

RESUMO

Baicalin (BG) is a natural glycoside with several promising therapeutic and preventive applications. However, its pharmaceutical potential is compromised by its poor water solubility, complex oral absorption kinetics, and low bioavailability. In this work, BG was incorporated in a series of chitosan (Ch)/glycerophosphate (GP)-based thermosensitive hydrogel formulations to improve its water solubility and control its release profile. Molecular interactions between BG and GP were investigated using Fourier transform infrared spectroscopy (FT-IR), and the ability of GP to enhance the water solubility of BG was studied in different release media. Drug-loaded Ch/GP hydrogels were prepared and characterized for their gelation time, swelling ratio, and rheological properties in addition to surface and internal microstructure. Polyethylene glycol (PEG) 6000 and hydroxypropyl methyl cellulose (HPMC) were incorporated in the formulations at different ratios to study their effect on modulating the sol-gel behavior and the in vitro drug release. In vivo pharmacokinetic (PK) studies were carried out using a rabbit model to study the ability of drug-loaded Ch/GP thermosensitive hydrogels to control the absorption rate and improve the bioavailability of BG. Results showed that the solubility of BG was enhanced in the presence of GP, while the incorporation of PEG and/or HPMC had an impact on gelation time, rheological behavior, and rate of drug release in vitro. PK results obtained following buccal application of drug-loaded Ch/GP thermosensitive hydrogels to rabbits showed that the rate of BG absorption was controlled and the in vivo bioavailability was increased by 330% relative to BG aqueous oral suspension. The proposed Ch/GP thermosensitive hydrogel is an easily modifiable delivery platform that is not only capable of improving the solubility and bioavailability of BG following buccal administration but also can be suited for various local and injectable therapeutic applications.


Assuntos
Portadores de Fármacos/química , Flavonoides/farmacocinética , Administração Bucal , Animais , Disponibilidade Biológica , Química Farmacêutica , Quitosana/química , Liberação Controlada de Fármacos , Flavonoides/administração & dosagem , Flavonoides/química , Glicerofosfatos/química , Hidrogéis/química , Masculino , Modelos Animais , Polietilenoglicóis/química , Coelhos , Reologia , Solubilidade , Espectroscopia de Infravermelho com Transformada de Fourier , Temperatura
8.
Mol Pharm ; 15(1): 247-255, 2018 01 02.
Artigo em Inglês | MEDLINE | ID: mdl-29232954

RESUMO

Atorvastatin calcium (AC)-loaded nanoparticles (NPs) of mean particle diameter <100 nm and narrow distribution were prepared and characterized. Their in vivo PK as well as PD measures following oral administration in different dosage regimens in hyperlipidemic rats were evaluated. The results revealed that the oral bioavailability of two selected AC-NPs formulations was 235% and 169% relative to Lipitor. However, the treatment regimens were not superior in reducing serum total cholesterol (TC), low-density lipoproteins (LDL), and triglycerides (TG) levels compared to Lipitor. Moreover, the AC-NPs treatments were associated with significant adverse effects observed biochemically and histologically. These results were contradictory with those obtained from a previous study in which similarly formulated AC-NPs of mean particle diameter >200 nm were found to be more safe and effective in reducing TC, LDL, and TG levels when administered to hyperlipiemic rats at reduced dosing frequency compared to daily dose of Lipitor despite their lower oral bioavailability. The discrepant correlation between pharmacokinetics (PK) and pharmacodynamics (PD) results was suggested to pertain to the different biodistribution profiles of AC-NPs depending on their sizes. Hereby, we provide a simple approach of particle size modulation to enhance the efficacy and safety of atorvastatin.


Assuntos
Atorvastatina/química , Atorvastatina/farmacocinética , Nanopartículas/química , Administração Oral , Animais , Atorvastatina/administração & dosagem , Colesterol/sangue , Lipoproteínas LDL/sangue , Masculino , Ratos , Distribuição Tecidual , Triglicerídeos/sangue
10.
Biopharm Drug Dispos ; 36(7): 417-28, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25845479

RESUMO

The regression limited sampling strategy approach (R-LSS), which is based on a small number of blood samples drawn at selected time points, has been used as an alternative method for the estimation of the area under the concentration-time curve (AUC). However, deviations from planned sampling times may affect the performance of R-LSS, influencing related therapeutic decisions and outcomes. The aim of this study was to investigate the impact of different sampling time deviation (STD) scenarios on the estimation of AUC by the R-LSS using a simulation approach. Three types of scenarios were considered going from the simplest case of fixed deviations, to random deviations and then to a more realistic case where deviations of mixed nature can occur. In addition, the sensitivity of the R-LSS to STD in each involved sampling point was evaluated. A significant impact of STD on the performance of R-LSS was demonstrated. The tolerance of R-LSS to STD was found to depend not only on the number of sampling points but more importantly on the duration of the sampling process. Sensitivity analysis showed that sampling points at which rapid concentration changes occur were relatively more critical for AUC prediction by R-LSS. As a practical approach, nomograms were proposed, where the expected predictive performance of R-LSS was provided as a function of STD information. The investigation of STD impact on the predictive performance of R-LSS is a critical element and should be routinely performed to guide R-LSS selection and use.


Assuntos
Área Sob a Curva , Ciclosporina/sangue , Monitoramento de Medicamentos/métodos , Imunossupressores/sangue , Monitoramento de Medicamentos/tendências , Previsões , Transplante de Células-Tronco Hematopoéticas/métodos , Transplante de Células-Tronco Hematopoéticas/tendências , Humanos , Análise de Regressão , Fatores de Tempo
11.
Drug Dev Ind Pharm ; 41(3): 375-81, 2015 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24303901

RESUMO

The administration of grapefruit juice (GFJ) has been postulated to inhibit the activity of P-glycoprotein (P-gp) transport system and thus can enhance the uptake of substrate drugs. However, for various reasons, the results obtained have been always swaying between confirmation and refutation. This study aims at re-evaluating the effect of lyophilized freshly-prepared grapefruit juice (LGFJ) prepared from the whole peeled fruit on P-gp activity using the model drug doxorubicin (DOX) in-vitro and timolol maleate (TM) in-vivo. Human uterine sarcoma MES-SA/DX5v cells, grown under nanomolar concentration of DOX and highly expressing P-gp, were used as model cells for in-vitro studies whereas white New Zealand male rabbits were used for in-vivo studies. Results showed that the accumulation of DOX in MES-SA/DX5v cells was increased by 18.3 ± 2.0% in presence of LGFJ compared to control experiments. Results from in-vivo absorption studies showed that the relative oral bioavailability of TM ingested with LGFJ was significantly higher by 70% and 43% compared to the oral bioavailability of TM ingested with saline and a commercial GFJ, respectively. This study as such confirms the inhibitory effects of LGFJ on P-gp efflux proteins and highlights the superiority of using lyophilized freshly prepared juices over the commercially available juices in research studies. Also, the results call for further studies to assess the possibility of co-administrating LGFJ with anti-cancer agents to modulate multidrug resistance in their cellular environment or incorporating LGFJ in solid dosage forms to improve oral bioavailability of drugs.


Assuntos
Membro 1 da Subfamília B de Cassetes de Ligação de ATP/fisiologia , Citrus paradisi , Interações Alimento-Droga/fisiologia , Preparações Farmacêuticas/metabolismo , Extratos Vegetais/metabolismo , Animais , Transporte Biológico/efeitos dos fármacos , Transporte Biológico/fisiologia , Linhagem Celular Tumoral , Doxorrubicina/metabolismo , Doxorrubicina/farmacologia , Liofilização/métodos , Humanos , Masculino , Extratos Vegetais/isolamento & purificação , Extratos Vegetais/farmacologia , Coelhos
13.
JCO Glob Oncol ; 10: e2400144, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38959450

RESUMO

Sudan has been under an armed conflict between the Sudanese Armed Forces and the Rapid Support Forces (RSF) militia since April 15, 2023. The conflict has turned the country into the largest internal displacement humanitarian crisis with 9.05 million internally displaced persons including 2.2 million children younger than 5 years and caused 1.47 million Sudanese to flee the country as refugees. The conflict has had a major destructive impact on the health system, which has incurred targeting with air raids, ground invasion, vandalization, looting of assets and supplies, and killing of doctors, nurses, and other health personnel. Khartoum Oncology Hospital, Sudan's main cancer hub for treatment, diagnostics, and research has become nonfunctional as a result of the conflict. The National Cancer Institute in Wad Medani, the second largest hub, faced a similar fate as the conflict spread to Al-Gezira State. Patients with cancer have been displaced multiple times in Sudan with grave consequences on the continuity of care, worsening of their disease outcomes and palpable negative impacts on children. The oncology workforce in Sudan have themselves been displaced yet are working hard to provide services and care for patients under impossible circumstances. Sudan's doctors in diaspora have rallied to provide support but they face multiple obstacles. As the conflict continues to spread, we call upon the WHO, the United Nations Children's Fund, St Jude Hospital, and all relevant partners to implement an immediate evacuation operation with urgent air lifts of the affected children to continue their cancer care in neighboring countries as was done in Ukraine and Gaza.


Assuntos
Conflitos Armados , Neoplasias , Humanos , Atenção à Saúde/organização & administração , Neoplasias/terapia , Neoplasias/epidemiologia , Refugiados , Sudão
14.
Int J Pharm X ; 7: 100244, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38585344

RESUMO

The process of wound healing and tissue regeneration involves several key mechanisms to ensure the production of new tissues with similar cellular functions. This study investigates the impact of pectin, a natural polysaccharide, and nebivolol hydrochloride (NBV), a nitric oxide (NO) donor drug, on wound healing. Utilizing ionotropic gelation, NBV-loaded pectin nanoparticles were developed following a 2231 full factorial design. The optimized formulation, determined using Design expert® software, exhibited an encapsulation efficiency percentage of 70.68%, zeta potential of -51.4 mV, and a particle size of 572 nm, characterized by a spherical, discrete morphology. An in vivo study was conducted to evaluate the effectiveness of the optimal formulation in wound healing compared to various controls. The results demonstrated the enhanced ability of the optimal formulation to accelerate wound healing. Moreover, histopathological examination further confirmed the formulation's benefits in tissue proliferation and collagen deposition at the wound site 15 days post-injury. This suggests that the developed formulation not only promotes faster healing but does so with minimal side effects, positioning it as a promising agent for effective wound healing and tissue regeneration.

15.
Pharm Dev Technol ; 18(4): 935-43, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-22107175

RESUMO

The aim of this study was to evaluate the use of maltodextrin as a sugar-matrix former along with several cellulosic binders in the preparation of freeze-dried orally disintegrating tablets (ODT). The ODT was prepared by freeze-drying an aqueous dispersion of nimesulide (NM) containing maltodextrin and a cellulosic binder. The influence of formulation parameters on the in vitro/in vivo disintegration time and in vitro dissolution of NM from ODTs along with other tablet characteristics was investigated using full factorial design. The optimized ODT contained 5% w/v maltodextrin DE 29, 2% w/v Methocel E15, and 5% w/v NM, disintegrated in less than 10 s and showed more than 70% of NM in ODTs dissolved within 2 min, compared to only 1.52% of NM plain drug and 7.25% of NM in immediate release commercial tablet. Crystalline state evaluation of NM in the optimized ODT was conducted through differential scanning calorimetry, and X-ray powder diffraction. The study suggests that the optimized ODT formulation developed in this work may be an alternative to conventional formulations of NM inconvenient to the patients such as intramuscular or rectal administration.


Assuntos
Anti-Inflamatórios não Esteroides/administração & dosagem , Excipientes/química , Polissacarídeos/química , Sulfonamidas/administração & dosagem , Administração Oral , Anti-Inflamatórios não Esteroides/química , Varredura Diferencial de Calorimetria , Cristalização , Liofilização , Derivados da Hipromelose , Metilcelulose/análogos & derivados , Metilcelulose/química , Solubilidade , Sulfonamidas/química , Comprimidos , Fatores de Tempo , Difração de Raios X
16.
Discov Health Syst ; 2(1): 15, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37520515

RESUMO

Background: Yemen is regarded as one of the Middle East's poorest countries. Decades of political, economic, and social difficulties have culminated in the current protracted conflict. As a result, the globe experienced its worst humanitarian catastrophe. The ongoing war has affected several public services, notably the health sector, which is operating at less than half its capacity. This study aims to examine Yemen's health system at the governorate level (Al Hodeida) amidst the current conflict. It analyzes current challenges and produces suggestions for enhancement. Methods: The study used qualitative research methods such as Key Informant Interviews (KIIs) and document analysis. The study used WHO's health systems framework to measure health system performance. Twelve KIIs were conducted via Skype with several health stakeholders. In addition, documents were analyzed to inform the subject guide, generate themes, and aid in the triangulation of results. Results: According to the study findings, the governorate health system managed to offer a minimum level of healthcare services while making some advances in outbreak control jointly with other partners. One of the main difficulties confronting the governorate's health system is a severe lack of financial resources forcing it to rely entirely on external aid. Furthermore, other significant deficiencies include inadequate health system organogram, low reporting capacities, insufficient funding, and scarcity of health professionals. Conclusion: Yemen's frail health system has been weakened by almost eight years of insecurity and conflict. If the current scenario continues, most of Yemen's health system's operations and indicators will likely deteriorate. On the other hand, progress in some areas, such as primary healthcare (PHC) services and disease management, is remarkable. However, for better performance, Yemen's health system leadership and stakeholders should seek a holistic strategy to improve the entire dimensions of the health system.

17.
J Infect Public Health ; 16(9): 1346-1360, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37433256

RESUMO

OBJECTIVES: COVID-19, caused by the novel coronavirus, has had a profound and wide-reaching impact on individuals of all age groups across the globe, including children. This review article aims to provide a comprehensive analysis of COVID-19 in children, covering essential topics such as epidemiology, transmission, pathogenesis, clinical features, risk factors, diagnosis, treatment, vaccination, and others. By delving into the current understanding of the disease and addressing the challenges that lie ahead, this article seeks to shed light on the unique considerations surrounding COVID-19 in children and contribute to a deeper comprehension of this global health crisis affecting our youngest population. METHODS: A comprehensive literature search was conducted to gather the most recent and relevant information regarding COVID-19 in children. Multiple renowned databases, including MEDLINE, PubMed, Scopus, as well as authoritative sources such as the World Health Organization (WHO), the U.S. Food and Drug Administration (FDA), the European Medicines Agency (EMA), and the National Institutes of Health (NIH) websites and others were thoroughly searched. The search included articles, guidelines, reports, clinical trials results and expert opinions published within the past three years, ensuring the inclusion of the latest research findings on COVID-19 in children. Several relevant keywords, including "COVID-19," "SARS-CoV-2," "children," "pediatrics," and related terms were used to maximize the scope of the search and retrieve a comprehensive set of articles. RESULTS AND CONCLUSION: Three years since the onset of the COVID-19 pandemic, our understanding of its impact on children has evolved, but many questions remain unanswered. While SAR-CoV-2 generally leads to mild illness in children, the occurrence of severe cases and the potential for long-term effects cannot be overlooked. Efforts to comprehensively study COVID-19 in children must continue to improve preventive strategies, identify high-risk populations, and ensure optimal management. By unraveling the enigma surrounding COVID-19 in children, we can strive towards safeguarding their health and well-being in the face of future global health challenges.


Assuntos
COVID-19 , Criança , Humanos , COVID-19/epidemiologia , COVID-19/prevenção & controle , SARS-CoV-2 , Pandemias/prevenção & controle , Saúde Global , Organização Mundial da Saúde
18.
Int J Pharm X ; 6: 100210, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37727680

RESUMO

The increasing resistance to antiparasitic drugs and limited availability of new agents highlight the need to improve the efficacy of existing treatments. Ivermectin (IVM) is commonly used for parasite treatment in humans and animals, however its efficacy is not optimal and the emergence of IVM-resistant parasites presents a challenge. In this context, the physico-chemical characteristics of IVM were modified by nanocrystallization to improve its equilibrium water-solubility and skin penetration, potentially improving its therapeutic effectiveness when applied topically. IVM-nanocrystals (IVM-NC) were prepared using microfluidization technique. The impact of several process/formulation variables on IVM-NC characteristics were studied using D-optimal statistical design. The optimized formulation was further lyophilized and evaluated using several in vitro and ex vivo tests. The optimal IVM-NC produced monodisperse particles with average diameter of 186 nm and polydispersity index of 0.4. In vitro results showed an impressive 730-fold increase in the equilibrium solubility and substantial 24-fold increase in dissolution rate. Ex vivo permeation study using pig's ear skin demonstrated 3-fold increase in dermal deposition of IVM-NC. Additionally, lyophilized IVM-NC was integrated into topical cream, and the resulting drug release profile was superior compared to that of the marketed product. Overall, IVM-NC presents a promising approach to improving the effectiveness of topically applied IVM in treating local parasitic infections.

19.
Antioxidants (Basel) ; 11(8)2022 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-36009255

RESUMO

The currently available management strategies for acute pancreatitis are inadequately effective which calls for exploration of new approaches to treat this condition. Caffeic acid phenethyl ester (CAPE) is a major bioactive constituent of honeybee propolis with promising therapeutic and preventive applications. However, its pharmaceutical potential and clinical use are hindered by its poor water solubility and limited plasma stability. In this study, we aimed to prepare, characterize and evaluate a CAPE-loaded nanoliposomal formulation to improve the efficacy of CAPE for the management of acute pancreatitis. The CAPE-loaded nanoliposomes (CAPE-loaded-NL) were prepared by a thin layer evaporation technique and were optimized using three edge activators. CAPE-loaded-NL were characterized for their vesicle size (VS), zeta potential (ZP), encapsulation efficiency (EE), polydispersity index (PDI), crystalline state and morphology. The protective effect of the optimal CAPE-loaded-NL was evaluated in a rat model of acute pancreatitis induced by administering a single intraperitoneal injection of L-ornithine. Oral pretreatment with CAPE-loaded-NL significantly counteracted ornithine-induced elevation in serum activities of pancreatic digestive enzymes and pancreatic levels of malondialdehyde, nuclear factor kappa B (NF-κB) p65, tumor necrosis factor-alpha, nitrite/nitrate, cleaved caspase-3 and myeloperoxidase activity. Moreover, pretreatment with CAPE-loaded-NL significantly reinstated the ornithine-lowered glutathione reductase activity, glutathione, nuclear factor erythroid 2-related factor 2 (Nrf2), heme oxygenase-1 levels and ATP/ADP ratio, and potentiated the Bcl-2/Bax ratio in pancreatic tissue. CAPE-loaded-NL displayed superior antioxidant, anti-inflammatory and anti-apoptotic effects compared to free CAPE oral suspension and achieved a more potent correction of the derangements in serum amylase and pancreatic myeloperoxidase activities. The histological observations were in line with the biochemical findings. Our results suggest that CAPE-loaded-NL provide a promising interventional approach for acute pancreatitis mainly through the enhancement of the exerted antioxidant, anti-inflammatory and anti-apoptotic effects which may be mediated, at least in part, through modulation of Nrf2 and NF-κß signaling.

20.
Ecancermedicalscience ; 16: 1433, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36200016

RESUMO

Cancer is the leading cause of death worldwide and the second leading cause of death in Sudanese women. However, despite proven interventions for primary, secondary and tertiary prevention and the World Health Organization's call to action toward eliminating cervical cancer, there has been little progress in addressing the cervical cancer burden in Sudan. This short communication intends to shed light on the challenges facing women's cancers in Sudan, taking cervical cancer as an example. It also discusses the opportunities and suggests ways to improve the outcomes of women's cancers in Sudan. Sudan's government should urgently implement a broad public health strategy to improve outcomes for women with cancer. The cancer control plan should be aligned with international, evidence-based recommendations and adapted to local circumstances. It should strengthen health literacy, augment different health care interventions, including vaccination, committed screening programmes, early detection and proper diagnosis of symptomatic cases, a programmatic approach to active management and palliative care and ensure robust referral pathways. Policies are also needed in collaboration with the international community in addressing the cancer care needs of internally displaced and refugee women in Sudan. The strategy should consider overcoming the existing challenges and making the most opportunities available.

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