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1.
Malar J ; 23(1): 103, 2024 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-38609987

RESUMO

BACKGROUND: The emergence of resistance to artemisinin-based combination therapy necessitates the search for new, more potent antiplasmodial compounds, including herbal remedies. The whole extract of Maytenus senegalensis has been scientifically investigated for potential biological activities both in vitro and in vivo, demonstrating strong antimalarial activity. However, there is a lack of data on the electrocardiographic effects of M. senegalensis in humans, which is a crucial aspect in the investigation of malaria treatment. Assessing the electrocardiographic effects of M. senegalensis is essential, as many anti-malarial drugs can inadvertently prolong the QT interval on electrocardiograms. Therefore, the study's objective was to evaluate the electrocardiographic effects of M. senegalensis in healthy adult volunteers. METHODS: This study is a secondary analysis of an open-label single-arm dose escalation. Twelve healthy eligible Tanzanian males, aged 18 to 45, were enrolled in four study dose groups. A single 12-lead electrocardiogram (ECG) was performed at baseline and on days 3, 7, 14, 28, and 56. RESULTS: No QTcF adverse events occurred with any drug dose. Only one volunteer who received the highest dose (800 mg) of M. senegalensis experienced a moderate transient change (△QTcF > 30 ms; specifically, the value was 37 ms) from baseline on day 28. There was no difference in maximum QTcF and maximum △QTcF between volunteers in all four study dose groups. CONCLUSIONS: A four-day regimen of 800 mg every 8 h of M. senegalensis did not impact the electrocardiographic parameters in healthy volunteers. This study suggests that M. senegalensis could be a valuable addition to malaria treatment, providing a safer alternative and potentially aiding in the battle against artemisinin-resistant malaria. The results of this study support both the traditional use and the modern therapeutic potential of M. senegalensis. They also set the stage for future research involving larger and more diverse populations to explore the safety profile of M. senegalensis in different demographic groups. This is especially important considering the potential use of M. senegalensis as a therapeutic agent and its widespread utilization as traditional medicine. Trial registration ClinicalTrials.gov, NCT04944966. Registered 30 June 2021-Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT04944966?term=kamaka&draw=2&rank=1.


Assuntos
Antimaláricos , Artemisininas , Malária , Maytenus , Adulto , Humanos , Masculino , Antimaláricos/farmacologia , Eletrocardiografia , Voluntários Saudáveis , Malária/tratamento farmacológico , Tanzânia , Voluntários , Adulto Jovem , Pessoa de Meia-Idade
2.
Phytomedicine ; 128: 155371, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38518649

RESUMO

BACKGROUND: Irinotecan (CPT-11) is used as chemotherapeutic drug for treatment of colorectal cancer. However, without satisfactory treatments, its gastrointestinal toxicities such as diarrhea and intestinal inflammation severely restrained its clinical application. Roots of Aucklandia lappa Decne. are used as traditional Chinese medicine to relieve gastrointestinal dysfunction and dehydrocostus lactone (DHL) is one of its main active components. Nevertheless, the efficacy and mechanism of DHL against intestinal mucositis remains unclear. PURPOSE: The present study aimed to investigate the protective effects of DHL on CPT-11-induced intestinal mucositis and its underlying mechanisms. METHODS: The protective effect of DHL was investigated in CPT-11-induced mice and lipopolysaccharide (LPS)+CPT-11 induced THP-1 macrophages. Body weight, diarrhea score, survival rate, colon length, and histopathological changes in mice colon and jejunum were analyzed to evaluate the protective effect of DHL in vivo. And DHL on reducing inflammatory response and regulating TLR4/NF-κB/NLRP3 pathway in vivo and in vitro were explored. Moreover, DHL on the interaction between TLR4 and MD2 was investigated. And silencing TLR4 targeted by siRNA was performed to validate the mechanisms of DHL on regulating the inflammation. RESULTS: DHL prevented CPT-11-induced intestinal damage, represented by reducing weight loss, diarrhea score, mortality rate and the shortening of the colon. Histological analysis confirmed that DHL prevented intestinal epithelial injury and improved the intestinal barrier function in CPT-11 induced mice. Besides, DHL significantly downregulated the level of inflammatory cytokines by inhibiting TLR4/NF-κB/NLRP3 signaling pathway in CPT-11-induced mice and LPS+CPT-11-induced THP-1 macrophages. In addition, DHL blocked TLR4/MD2 complex formation. Molecular docking combined with SIP and DARTS assay showed that DHL could bind to TLR4/MD2 and occludes the hydrophobic pocket of MD2. Furthermore, Silencing TLR4 abrogated the effect of DHL on LPS+CPT-11 induced inflammatory response in THP-1 macrophages. Additionally, DHL ameliorate the CPT-11-induced intestinal mucositis without affecting the anti-tumor efficacy of CPT-11 in the tumor xenograft mice. CONCLUSION: This study found that DHL exhibited the anti-inflammatory effects in CPT-11-induced intestinal mucositis by inhibiting the formation of TLR4/MD2 complex and then regulation of NF-κB/NLRP3 signaling pathway. DHL is potentially served as a novel strategy of combined medication with CPT-11.


Assuntos
Irinotecano , Lactonas , Antígeno 96 de Linfócito , Mucosite , Sesquiterpenos , Receptor 4 Toll-Like , Animais , Receptor 4 Toll-Like/metabolismo , Mucosite/induzido quimicamente , Mucosite/tratamento farmacológico , Camundongos , Lactonas/farmacologia , Humanos , Antígeno 96 de Linfócito/metabolismo , Masculino , NF-kappa B/metabolismo , Transdução de Sinais/efeitos dos fármacos , Lipopolissacarídeos , Proteína 3 que Contém Domínio de Pirina da Família NLR/metabolismo , Células THP-1 , Antineoplásicos Fitogênicos/farmacologia , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos BALB C , Mucosa Intestinal/efeitos dos fármacos , Mucosa Intestinal/metabolismo
3.
Med J Malaysia ; 79(Suppl 1): 134-139, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38555898

RESUMO

INTRODUCTION: Night eating is a very common dietary behaviour among university students. This study aims to investigate the relationship between night eating and BMI, stress, sleep quality and duration of study among university students. MATERIALS AND METHODS: A total of 385 university students including foundation and undergraduate students took part in this study. Self-administered online surveys were used to obtain sociodemographic data, and anthropometry measurements including weight and height, night eating during studying, duration of the study, opinion on eating and academic performance, sleep quality, level of depression, anxiety, and stress of the respondents. Questionnaires were validated and IBM SPSS Statistics Software version 26.0 was used to analyse categorical and continuous variables. RESULTS: The findings showed that there was an association between night eaters and coffee consumption with BMI (p<0.001) and sleep quality (p<0.05). However, there was no association (p>0.05) found between the types of food eaten during night studying and the mean duration of the study. The results showed drinking coffee had an association with depression, anxiety, and stress (p<0.05) among Malaysian university students. CONCLUSION: Coffee consumption was common among undergraduate students during studying. Awareness of the risk of overconsumption of caffeine intake should be implemented in the future. However, this study did not include all types of food choices and drinks. Thus, frequency of eating energy dense food during night studying among students should be conducted in the future.


Assuntos
Café , Qualidade do Sono , Humanos , Índice de Massa Corporal , Universidades , Inquéritos e Questionários , Estudantes
4.
Nutrients ; 16(5)2024 Feb 25.
Artigo em Inglês | MEDLINE | ID: mdl-38474764

RESUMO

Nanotechnology in human nutrition represents an innovative advance in increasing the bioavailability and efficiency of bioactive compounds. This work delves into the multifaceted dietary contributions of nanoparticles (NPs) and their utilization for improving nutrient absorption and ensuring food safety. NPs exhibit exceptional solubility, a significant surface-to-volume ratio, and diameters ranging from 1 to 100 nm, rendering them invaluable for applications such as tissue engineering and drug delivery, as well as elevating food quality. The encapsulation of vitamins, minerals, and antioxidants within NPs introduces an innovative approach to counteract nutritional instabilities and low solubility, promoting human health. Nanoencapsulation methods have included the production of nanocomposites, nanofibers, and nanoemulsions to benefit the delivery of bioactive food compounds. Nutrition-based nanotechnology and nanoceuticals are examined for their economic viability and potential to increase nutrient absorption. Although the advancement of nanotechnology in food demonstrates promising results, some limitations and concerns related to safety and regulation need to be widely discussed in future research. Thus, the potential of nanotechnology could open new paths for applications and significant advances in food, benefiting human nutrition.


Assuntos
Suplementos Nutricionais , Nanopartículas , Humanos , Antioxidantes , Vitaminas , Nanotecnologia/métodos
5.
J Ethnopharmacol ; 321: 117566, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38081395

RESUMO

ETHNOPHARMACOLOGICAL RELEVANCE: Euphorbia plants have long been used as traditional medicine in China, Europe, America, Turkey, India, Africa, Iran, and Pakistan because of its high medicinal value and health advantages especially as a remedy for several types of cancer. AIM OF THE STUDY: Doxorubicin (DOX) is one of the most frequently prescribed drugs in cancer chemotherapy, with dose-limiting cardiotoxicity. The development of medicinal approaches to attenuate drug's toxicity represents an area of great concern in cancer research. Because research on this topic is still disputed and limited, we aim to investigate the potential of supplementation with Euphorbia grantii Oliv. on DOX-induced cardiomyopathy in Ehrlich carcinoma bearing mice. MATERIALS AND METHODS: The high-performance thin layer chromatography (HPTLC) analysis of total methanolic extract (TE), and its bioactive dichloromethane fraction (DCMF) was applied for the determination of friedelin. Male BALB/c mice were used to keep the Ehrlich ascites tumor cells. The experiment was performed for a 2-weeks period. RESULTS: A good linearity relationship was found to be with correlation coefficient (r2) value of 0.9924 for the isolated friedelin. Limit of detection (LOD) and limit of quantitation (LOQ) was found to be 0.00179, and 0.000537 ng/band respectively for friedelin. The amount of friedelin in the TE and DCMF were determined by using calibration curve of standard as 106.32 ± 5.69 µg, and 159.2 ± 4.24 µg friedelin/mg extract, respectively. DOX-induced cardiomyopathy by decreasing the ejection fraction (EF) compared to the Ehrlich and negative control groups. It resulted in a decrease in the EF by 30 and 39% compared to the other groups. High and low doses of the TE and DCMF did not result in significantly different ejection fractions compared to the Ehrlich group. Co-administration of DCMF with DOX ameliorated the alteration in the serum CKMB and LDH levels. As revealed from histopathological study, DOX impairs viability of cardiac myocytes and DCMF could effectively and extensively counteract this action of DOX and potentially protect the heart from severe toxicity of DOX. CONCLUSIONS: Finally, our results indicated that Euphorbia grantii Oliv. would be the best option to reduce DOX adverse effects.


Assuntos
Carcinoma de Ehrlich , Cardiomiopatias , Euphorbia , Camundongos , Animais , Doxorrubicina/farmacologia , Miócitos Cardíacos , Cardiomiopatias/induzido quimicamente , Cardiomiopatias/tratamento farmacológico , Carcinoma de Ehrlich/tratamento farmacológico , Carcinoma de Ehrlich/patologia
6.
Micron ; 177: 103574, 2024 02.
Artigo em Inglês | MEDLINE | ID: mdl-38070325

RESUMO

This study provides a comprehensive pollen micromorphology within the Nepeta genus, revealing intricate details about the pollen grains' structure and characteristics. The findings shed light on the evolutionary and taxonomical aspects of this plant genus, offering valuable insights for botanists and researchers studying Nepeta species. The pollen grains of 18 Nepeta species were studied using scanning electron microscopy (SEM) and light microscopy (LM) in Northern Pakistan. At the microscale, pollen quantitative measurements, qualitative traits, and diverse sculpturing patterns were reported and compared. Significant differences in pollen size, shape, ornamentation, and sculpturing patterns were discovered among the Nepeta species. Our data show that exine sculpturing is quite diverse, with most species exhibiting a reticulate perforate pollen pattern. Nepeta connata, Nepeta discolor, Nepeta elliptica, revealed a distinct bireticulate perforate exine stratification. Hexazonocolpate pollen is the most common. Furthermore, the surface membrane attributes of the colpus varied greatly, ranging from rough, scabrate, psilate, to sinuate patterns. Principal Component Analysis (PCA) was used to discover the key factors influencing pollen diversity. PCA results showed that polar and equatorial diameters, colpi size, and exine thickness were the most influential pollen features between Nepeta species. This study adds to our understanding of pollen morphology in the Nepeta genus, offering information on the vast range of characteristics found in this economically important group. The extensive characterization of pollen features provides useful insights for the categorization and differentiation of Nepeta species, adding to the Lamiaceae micromorphology.


Assuntos
Nepeta , Microscopia Eletrônica de Varredura , Evolução Biológica , Pólen/anatomia & histologia , Paquistão
7.
Br Poult Sci ; 65(1): 28-33, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38038674

RESUMO

1. The effectiveness of inactivated vaccines depends on selecting the suitable adjuvant for vaccine formulation. The potency of vaccines with low antigen content can be improved with the appropriate adjuvant. This could allow production of more doses and lower the production cost.2. This study evaluated the efficiency of vaccines prepared using oil extracted from natural sources including argan oil, almond oil, sesame seed oil, pumpkin oil, cactus oil and black seed oil as alternative adjuvants for improving the protection capacity of inactivated influenza virus vaccine as compared to commonly used mineral oils.3. Each vaccine formulation was evaluated for stability, safety and immunogenicity in chickens, as well as for reducing the viral shedding after challenge infection.4. The cactus, sesame and pumpkin seed oil-based vaccines were found to be potent and successfully induced the production of humoral immunity in vaccinated chickens.


Assuntos
Vacinas contra Influenza , Influenza Aviária , Animais , Galinhas , Óleo Mineral , Óleos de Plantas , Influenza Aviária/prevenção & controle , Minerais
8.
Eur Respir J ; 63(2)2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38123239

RESUMO

BACKGROUND: Short-term studies suggest that dietary nitrate (NO3 -) supplementation may improve the cardiovascular risk profile, lowering blood pressure (BP) and enhancing endothelial function. It is not clear if these beneficial effects are sustained and whether they apply in people with COPD, who have a worse cardiovascular profile than those without COPD. Nitrate-rich beetroot juice (NR-BRJ) is a convenient dietary source of nitrate. METHODS: The ON-BC trial was a randomised, double-blind, placebo-controlled parallel group study in stable COPD patients with home systolic BP (SBP) measurement ≥130 mmHg. Participants were randomly allocated (1:1) using computer-generated, block randomisation to either 70 mL NR-BRJ (400 mg NO3 -) (n=40) or an otherwise identical nitrate-depleted placebo juice (0 mg NO3 -) (n=41), once daily for 12 weeks. The primary end-point was between-group change in home SBP measurement. Secondary outcomes included change in 6-min walk distance (6MWD) and measures of endothelial function (reactive hyperaemia index (RHI) and augmentation index normalised to a heart rate of 75 beats·min-1 (AIx75)) using an EndoPAT device. Plasma nitrate and platelet function were also measured. RESULTS: Compared with placebo, active treatment lowered SBP (Hodges-Lehmann treatment effect -4.5 (95% CI -5.9- -3.0) mmHg), and improved 6MWD (30.0 (95% CI 15.7-44.2) m; p<0.001), RHI (0.34 (95% CI 0.03-0.63); p=0.03) and AIx75 (-7.61% (95% CI -14.3- -0.95%); p=0.026). CONCLUSIONS: In people with COPD, prolonged dietary nitrate supplementation in the form of beetroot juice produces a sustained reduction in BP, associated with an improvement in endothelial function and exercise capacity.


Assuntos
Doenças Cardiovasculares , Doença Pulmonar Obstrutiva Crônica , Humanos , Nitratos/uso terapêutico , Doenças Cardiovasculares/prevenção & controle , Doenças Cardiovasculares/tratamento farmacológico , Suplementos Nutricionais , Fatores de Risco , Pressão Sanguínea , Antioxidantes , Doença Pulmonar Obstrutiva Crônica/complicações , Doença Pulmonar Obstrutiva Crônica/tratamento farmacológico , Método Duplo-Cego , Estudos Cross-Over
9.
BMC Complement Med Ther ; 23(1): 450, 2023 Dec 12.
Artigo em Inglês | MEDLINE | ID: mdl-38087230

RESUMO

BACKGROUND: In Uganda, medicinal plants have been utilized to treat a variety of ailments, including cancer. However, there is little information available about the medicinal plants used to treat cancer in the Elgon subregion. As a result, the current study documented the plant species used in the management of cancer in the Elgon sub-region. METHODS: Data were gathered by observation, self-administered questionnaires, interview guides, and guided field trips. Analyzing descriptive statistics and creating graphs were done using SPSS (version 21.0) and GraphPad Prism® version 9.0.0, respectively. Well-established formulae were used to calculate quantitative indices. The narratives were interpreted using major theories and hypotheses in ethnobotany. RESULTS: A total of 50 plant species from 36 families were documented, and herbal knowledge was mainly acquired through inheritance. Fabaceae and Asteraceae comprised more plant species used in herbal preparation. Most plants were collected from forest reserves (63%); herbal therapies were made from herbs (45%); and leaves were primarily decocted (43%). The most frequently used plants were Tylosema fassoglensis, Hydnora abyssinica, Azidarachata indica, Prunus Africana, Kigelia africana, Syzygium cumini, Hydnora africana, Rhoicissus tridentata, Albizia coriaria, and Plectranthus cuanneus. All the most commonly used plants exhibited a high preference ranking (60-86%) and reliability level (74.1-93.9%). Generally, the ICF for all the cancers treated by medicinal plants was close to 1 (0.84-0.95). CONCLUSIONS: The ten most commonly utilized plants were favored, dependable, and most important for treating all known cancers. As a result, more investigation is required to determine their phytochemistry, toxicity, and effectiveness in both in vivo and in vitro studies. This could be a cornerstone for the pharmaceutical sector to develop new anticancer medications.


Assuntos
Neoplasias , Plantas Medicinais , Humanos , Uganda , Reprodutibilidade dos Testes , Medicinas Tradicionais Africanas , Conhecimentos, Atitudes e Prática em Saúde , Neoplasias/tratamento farmacológico
10.
BMC Med Educ ; 23(1): 826, 2023 Nov 03.
Artigo em Inglês | MEDLINE | ID: mdl-37924041

RESUMO

BACKGROUND: Dental internships are a vital way for recent graduates of undergraduate dentistry courses to bridge the gap between study and clinical practice. Interns' perceptions of dental internships have been explored in certain studies but the reality of the dental internship and dental interns' practical performance has not been examined. Therefore, this study aims to explore the reality of the dental internship as a transitional stage after completion of an undergraduate course in dentistry. METHODS: This qualitative research recruited 23 dental interns from Saudi Arabia's Riyadh Province. To explore the reality of dental internships, the research relied on a performative knowledge approach to examine interns' practices and performance. Diaries and semi-structured interviews conducted virtually were used to gather data across three months. The data was then subject to thematic analysis that applied an inductive strategy. The data analysis's credibility and trustworthiness were verified using triangulation techniques, an audit trail and member-checking. RESULTS: Five key themes concerning dental interns' practices were identified in this research: exploration, addressing knowledge gaps, responsibilities, decision-making and social connections. The most significant findings reveal that dental internships go beyond clinical work to include certain personal and social aspects that dental interns undertake during their internships. CONCLUSION: The findings of this research indicate that more real-world, practical knowledge should be integrated into the curricula of undergraduate dentistry programmes. In sum, this work highlights the need for holistic dental education that encompasses not only the clinical development of interns and students but also other elements such as their personal and social growth. Moreover, this research reveals that a performative knowledge approach can help researchers to identify significant findings regarding the practical experiences of dental interns. This study has implications for dentistry and any other medical speciality education programme that involves an internship.


Assuntos
Internato e Residência , Humanos , Arábia Saudita , Pesquisa Qualitativa , Currículo
11.
Nutrients ; 15(21)2023 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-37960352

RESUMO

This review delves into the intricate relationship between excess folate (vitamin B9) intake, especially its synthetic form, namely, folic acid, and its implications on health and disease. While folate plays a pivotal role in the one-carbon cycle, which is essential for DNA synthesis, repair, and methylation, concerns arise about its excessive intake. The literature underscores potential deleterious effects, such as an increased risk of carcinogenesis; disruption in DNA methylation; and impacts on embryogenesis, pregnancy outcomes, neurodevelopment, and disease risk. Notably, these consequences stretch beyond the immediate effects, potentially influencing future generations through epigenetic reprogramming. The molecular mechanisms underlying these effects were examined, including altered one-carbon metabolism, the accumulation of unmetabolized folic acid, vitamin-B12-dependent mechanisms, altered methylation patterns, and interactions with critical receptors and signaling pathways. Furthermore, differences in the effects and mechanisms mediated by folic acid compared with natural folate are highlighted. Given the widespread folic acid supplementation, it is imperative to further research its optimal intake levels and the molecular pathways impacted by its excessive intake, ensuring the health and well-being of the global population.


Assuntos
Deficiência de Ácido Fólico , Ácido Fólico , Gravidez , Feminino , Humanos , Ácido Fólico/efeitos adversos , Suplementos Nutricionais/efeitos adversos , Vitamina B 12 , Metilação de DNA
12.
Sci Rep ; 13(1): 14845, 2023 09 08.
Artigo em Inglês | MEDLINE | ID: mdl-37684294

RESUMO

The development of an efficient, safe, and environment-friendly technique to terminate tuber dormancy in potatoes (Solanum tuberosum L.) is of great concern due to the immense scope of multiple cropping all over the globe. The breakage of tuber dormancy has been associated with numerous physiological changes, including a decline in the level of starch and an increase in the levels of sugars during storage of freshly harvested seed potatoes, although their consistency across genotypes and various dormancy-breaking techniques have not yet been fully elucidated. The purpose of the present research is to assess the efficacy of four different dormancy-breaking techniques, such as soaking in 90, 60, or 30 mg L-1 solutions of benzyl amino purine (BAP) and 30, 20, or 10 mg L-1 gibberellic acid (GA3) alone and in the combination of optimized concentrations; cold pre-treatment at 6, 4, or 2 °C; electric shock at 80, 60, 40, or 20 Vs; and irradiation at 3.5, 3, 2.5, 2, 1.5, or 1 kGy on the tuber dormancy period and sprout length of six genotypes. Furthermore, the changes that occurred in tuber weight and endogenous starch, sucrose, fructose, and glucose contents in experimental genotypes following the application of these techniques were also examined. Overall, the most effective technique to terminate tuber dormancy and hasten spout growth was the combined application of BAP and GA3, which reduced the length of dormancy by 9.6 days compared to the untreated control, following 6.7 days of electric current, 4.4 days of cold pre-treatment, and finally irradiation (3.3 days). The 60 mg L-1 solution of BAP greatly reduced the dormancy period in all genotypes but did not affect the sprout length at all. The genotypes showed a weak negative correlation (r = - 0.4) (P < 0.05) of endogenous starch contents with dormancy breakage and weight loss or a moderate (r = - 0.5) correlation with sprout length, but a strong positive correlation (r = 0.8) of tuber glucose, fructose, and sucrose contents with dormancy breakage and weight loss. During 3 weeks of storage, sprouting commencement and significant weight loss occurred as tuber dormancy advanced towards breakage due to a reduction in starch and an increase in the sucrose, fructose, and glucose contents of the tubers. These findings could be advantageous for postponing or accelerating seed potato storage as well as investigating related physiological research in the future.


Assuntos
Solanum tuberosum , Açúcares , Solanum tuberosum/genética , Glucose , Morte , Frutose , Genótipo , Amido , Sacarose
13.
Trop Biomed ; 40(2): 174-182, 2023 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-37650404

RESUMO

The present study was conducted to investigate the antimicrobial potential of essential oils of Curcuma longa and Syzygium aromaticum against multidrug-resistant pathogenic bacteria. Four identified bacterial isolates including Methicillin-resistant Staphylococcus aureus (MRSA), Escherichia coli, Klebsiella pneumoniae, and Acinetobacter baumannii were selected and their antibiotic sensitivity was checked by disc diffusion assay. C. longa and S. aromaticum were subjected to steam distillation to obtain their essential oils. The crude essential oils were fractioned by employing column chromatography. Crude essential oils and their fractions were evaluated for their antibacterial activity by agar well diffusion assay and minimum inhibitory concentrations were calculated. All the selected bacterial isolates showed resistance to three or more than three antibiotic groups and were declared as multidrugresistant (MDRs). Crude essential oils of C. longa and S. aromaticum exhibited antimicrobial activity against all selected isolates but S. aromaticum activity was better than the C. longa with a maximum 19.3±1.50 mm zone of inhibition against A. baumannii at 1.04 µL/mL MIC. GC/MS analysis revealed the abundance of components including eugenol, eugenyl acetate, b- caryophyllene, and a- Humulene in both crude oil and fractions of S. aromaticum. While the main components of C. longa essential oil were Ar-tumerone, a-tumerone, b- Tumerone, I-Phellandrene, a-zingibirene, b- sesquiphellandrene, and p- Cymene. This study highlights that plant-based essential oils could be a promising alternative to antibiotics for which pathogens have developed resistance. C. longa and S. aromaticum carry compounds that have antimicrobial potential against multiple drug-resistant bacteria including MRSA. E. coli, K. pneumoniae and A. baumannii.


Assuntos
Staphylococcus aureus Resistente à Meticilina , Óleos Voláteis , Syzygium , Óleos Voláteis/farmacologia , Curcuma , Escherichia coli , Óleos de Plantas , Antibacterianos/farmacologia , Bactérias
14.
Cureus ; 15(8): e43136, 2023 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-37577274

RESUMO

Background The use of traditional medicine (TM) in children is widespread, particularly in developing countries. Parents often rely on TM to treat their children's illnesses or maintain their health. However, the safety and efficacy of TM are often unclear, and there is a need to assess parents' knowledge, attitudes, and practices toward its use. Methods This is a community-based cross-sectional study conducted in Bisha, Saudi Arabia, with a sample size of 555. The study used a modified questionnaire to collect data. The data were collected from March to June 2023. This study involved both descriptive and inferential statistics.  Results The study included 555 participants, most of whom were female, Saudi nationals, and married and had a bachelor's degree. More than half of the participants reported using TM, and most believed that it had fewer side effects and could be taken with allopathic medicines. However, many participants did not believe that TM could prevent or cure all diseases or that it was always safe. The median knowledge score was 4.0, with higher scores associated with older age and higher educational level. Most participants had a positive attitude toward TM, with higher attitude scores associated with younger age, male gender, lower educational level, and healthcare-related occupation. The median practice score was 31.0, with higher scores associated with younger age, male gender, illiteracy, and healthcare-related occupation. Overall, the study highlights the importance of understanding the patterns of use, knowledge, attitudes, and practices of TM in the population, particularly among different demographic groups. Conclusions This study highlights the need for better regulation and supervision of TM outlets to ensure the safety and efficacy of the products. It also emphasizes the importance of consulting healthcare professionals before using TM on children. The findings suggest that healthcare providers should be knowledgeable about TM and provide guidance to parents on its appropriate use.

15.
Trop Anim Health Prod ; 55(4): 265, 2023 Jul 11.
Artigo em Inglês | MEDLINE | ID: mdl-37433975

RESUMO

In vitro and in vivo experiments were carried out to investigate the effects of the supplementation of different levels of humic and fulvic acids alone or their combination (2:1 ratio) on ruminal fermentation constituents, and nutrients digestibility in goats. The treatments in Exp. 1 were the following: (1) basal substrate (50% concentrate: 50% forage) was incubated humic at 0, 2, 4, and 6 g/kg DM; (2) fulvic at 0, 1, 2, and 3 g/kg DM; and (3) a combination of humic and fulvic (in a 2:1 ratio) at 0, 3, 6, and 9 g/kg DM" of treatments. The results of Exp. 1 revealed that methane (CH4) production was linearly decreased (P < 0.001) upon increasing humic doses. Whereas, the combination of fulvic acid with humic acid resulted in a quadratic decrease (P < 0.001) in net CH4 production. Supplementing humic and fulvic acids, either separately or in combination, resulted in reduced (P < 0.05) ammonia nitrogen (NH3-N) and total volatile fatty acid (VFA) concentrations. In Exp. 2 to further examine the findings obtained in Exp. 1, forty Damascus non-lactating goats (2-3 years of age and body weight 29 ± 1.5 kg) were fed the same basal diet as in Exp. 1, plus one of four treatments. Treatments were the following: (1) control (no supplement); (2) basal diet plus 5 g humic alone; (3) basal diet plus 2.5 g fulvic alone, and (4) basal diet plus 7.5 g their combination. Goats fed diets supplemented with humic acid, fulvic acid, either alone or in combination, increased concentrations of butyrate (P = 0.003), total VFA (P < 0.001), and improved (P < 0.001) digestibility of nutrients, but reduced (P < 0.001) ruminal NH3-N concentrations. In conclusion, applying humic and fulvic acids alone or in combination attenuated in vitro CH4 production, while improved intake and diet digestibility without adverse effect on rumen fermentation profiles in Damascus goats.


Assuntos
Cabras , Substâncias Húmicas , Animais , Fermentação , Ingestão de Alimentos , Nutrientes
16.
Anal Methods ; 15(28): 3439-3448, 2023 07 20.
Artigo em Inglês | MEDLINE | ID: mdl-37409475

RESUMO

Nutraceuticals are promoted and marketed with the stated label of being natural as well as safe herbal products. In order to enhance their effectiveness, nutraceuticals are usually adulterated with undeclared constituents. Slimming herbs may contain sibutramine (SBT) which is an FDA-banned ingredient due to its fatal outcomes. This current work's aim is to design a trimodal sensor for SBT detection in different herbal slimming formulations. Screen-printed silver and multi-walled carbon nanotube inks were employed for the potentiometric sensor. The sensor was designed to fill a reaction well in which a carbon dot-silver nanoparticle pair was applied for fluorimetric and colorimetric purposes. The trimodal sensor was designed to fit an 8 mm 2-pin LED strip connector. Potentiometric measurement took place upon application of one sample aliquot then the optical reaction proceeded next in a specified zone for optical detection. These multiple detection mechanisms achieved the required selectivity for SBT determination in the presence of other slimming products' additives. This trimodal sensor satisfied World Health Organization standards for point-of-care devices demonstrating the suggested device as a dynamic part for rapid on-site detection of undisclosed SBT.


Assuntos
Nanopartículas Metálicas , Prata , Potenciometria , Suplementos Nutricionais/análise
17.
Braz J Biol ; 84: e268892, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37311125

RESUMO

Most of the treatment strategies for tumors and other disorders is photodynamic therapy (PDT). For several years, increasing the efficiency of nanostructured treatment devices, including light therapy, has been considered in different treatment methods. Light Dynamics The use of nanomaterial in this method's production and progress. The use of nanoparticles as carriers is a promising accomplishment, since all the criteria for an ideal photodynamic therapy agent can be given with these nanomaterials. The kinds of nanoparticles that have recently been used in photodynamic therapy are mentioned in this article. Latest advancements are being explored in the use of inorganic nanoparticles and biodegradable polymer-based nanomaterial as carriers of photosynthetic agents. Photosynthetic nanoparticles, self-propagating nanoparticles, and conversion nanoparticles are among the successful photodynamic therapy nanoparticles addressed in this report.


Assuntos
Nanopartículas , Neoplasias , Fotoquimioterapia , Humanos , Nanopartículas/uso terapêutico , Neoplasias/tratamento farmacológico , Fotossíntese
18.
J Nat Med ; 77(3): 430-445, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-37147480

RESUMO

The aim of this state-of-the-art review is to provide a comprehensive overview of the various therapeutic effects of Mastic (Pistacia lentiscus) gum on oral health. The search of the literature was conducted across thirteen databases for relevant publications published through May 2022 in English, Arabic, or Greek using a combination of keywords and phrases. Out of 246 papers, the search procedure identified 14 papers for inclusion. Mastic gum displayed antibacterial and antimicrobial properties and inhibited plaque accumulation, constituting a beneficial adjuvant in caries prevention. In the treatment and prevention of periodontal diseases, Pistacia lentiscus essential oil provided effective antibacterial activity against a variety of periodontal bacteria as well as anti-inflammatory properties. For oral cancer, several clinical trials revealed interesting results against cell proliferation, induction of apoptosis, and regulation of intracellular signaling pathways. This indicates the potential of Mastic gum to serve as a preventive and therapeutic agent for oral mucosa inflammation and oral cancer. No notable toxic or side effects were reported in the clinical trials reviewed. This review highlights the various beneficial effects of Mastic gum in the prevention and potential treatment of oral diseases. Further research targeting Pistacia lentiscus products is required in order to validate and utilize these products to prevent and to treat oral health diseases.


Assuntos
Neoplasias Bucais , Pistacia , Humanos , Resina Mástique , Resinas Vegetais/farmacologia , Resinas Vegetais/uso terapêutico , Saúde Bucal , Antibacterianos/farmacologia , Neoplasias Bucais/tratamento farmacológico
19.
Drug Dev Ind Pharm ; 49(3): 1-12, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37074796

RESUMO

BACKGROUND: Ginkgo biloba (GB) leaves extract is known to possess potent antioxidants and other bioactivities such as improved skin conditions and rejuvenation. OBJECTIVE: This study aimed to develop a cosmeceutical preparation to utilize the strong antioxidant potential of GB leaves as part of the skincare formulation. METHODS: Cream incorporated GB (GBC) was prepared by mixing the obtained extract with stearic acid-sodium hydroxide components in an emulsion format. The obtained GBC was characterized for GB contents, uniformity, pH, compatibility, stability, and skin's human application. RESULTS: A homogeneous, physically, and chemically stable, with pH near the skin pH and shiny cream, was obtained. The prepared cream was easy to rub and pearly in appearance. It was effective and safe during the two-week trial conducted on human volunteers according to clinical trial registry protocols. The cream scavenged free radicals in DPPH assay tests. The cream incorporated GB made the skin more spirited and tauter. Furthermore, the wrinkles were reduced and the skin was renewed vigor. CONCLUSION: The GBC worked at the topical level and provided benefits when applied daily for the trial duration. The formulation also provided visually observable anti-wrinkle effects on the skin, with visible improvements in the skin's shape and texture. The prepared cream can be used to rejuvenate the skin.


Assuntos
Cosmecêuticos , Envelhecimento da Pele , Humanos , Cosmecêuticos/farmacologia , Ginkgo biloba , Rejuvenescimento , Voluntários Saudáveis , Creme para a Pele , Extratos Vegetais/farmacologia , Antioxidantes/farmacologia
20.
Molecules ; 28(5)2023 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-36903563

RESUMO

The use of the synthetic drugs has increased in the last few decades; however, these drugs exhibit various side effects. Scientists are therefore seeking alternatives from natural sources. Commiphora gileadensis has long been used to treat various disorders. It is commonly known as bisham or balm of Makkah. This plant contains various phytochemicals, including polyphenols and flavonoids, with biological potential. We found that steam-distilled essential oil of C. gileadensis exhibited higher antioxidant activity (IC50, 22.2 µg/mL) than ascorbic acid (IC50, 1.25 µg/mL). The major constituents (>2%) in the essential oil were ß-myrcene, nonane, verticiol, ß-phellandrene, ß-cadinene, terpinen-4-ol, ß-eudesmol, α-pinene, cis-ß-copaene and verticillol, which might be responsible for the antioxidant and antimicrobial activity against Gram-positive bacteria. The extract of C. gileadensis exhibited inhibitory activity against cyclooxygenase (IC50, 450.1 µg/mL), xanthine oxidase (251.2 µg/mL) and protein denaturation (110.5 µg/mL) compared to standard treatments, making it a viable treatment from a natural plant source. LC-MS analysis revealed the presence of phenolic compounds such as caffeic acid phenyl ester, hesperetin, hesperidin, chrysin and transient amounts of catechin, gallic acid, rutin and caffeic acid. The chemical constituents of this plant can be explored further to investigate its wide variety of therapeutic potential.


Assuntos
Antioxidantes , Óleos Voláteis , Antioxidantes/química , Commiphora/química , Xantina Oxidase , Extratos Vegetais/química , Arábia Saudita , Óleos Voláteis/química
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