1,720,964 research outputs found
The Antiviral Potential of Iranian Herbal Pharmacopoeia (IHP) on Herpes Simplex Viruses (HSV): A Review Article
Get PDFHerpes Simplex Viruses (HSV) viruses are highly contagious that commonly cause dermatitis, encephalitis, meningitis and genitourinary infections and also can lead to cervical cancer. For treatment of HSV infections, several physical methods and antiviral drugs are introduced, antiviral medications can also prevent or reduce outbreaks. The use of herbal medicine with antiviral effects attracted worldwide attentions. The aim of this review article is to introduce the Iranian Herbal Pharmacopoeia (IHP) with antiviral potential against two HSV serotypes and help to evaluate and develop the new drugs from natural sources. To provide this review, relevant articles in some authentic databases including PubMed, Web of Science, Science Direct, Scopus, Google Scholar and SID (scientific information database), from 1967 to April 2022 were collected, and selected botanicals from (IHP) with their scientific names and classifications and their outcome (CC50 and IC50) were introduced. In this review, scientific data regarding anti-herpetic activities of Iranian Herbal Pharmacopoeia (IHP) showed that 34 herbs from 17 families have antiviral potential to inhibit two HSV serotypes. According to families, Lamiaceae family has the highest percentage (29.41 %) of plants with antiviral activity against two HSV serotypes, also review of recent data showed that Salvia officinalis, Melissa officinalis, Securigera Securidaca, Hyssopus officinalis, Quercus brantii, Artemisia aucheri and Curcuma longa have remarkable antiviral activity against two HSV serotypes. Results of this review suggest that further research to identify and purify the bioactive compounds to determine the molecular mechanisms of action is needed
Cardiotoxicity Effects of Herbal Medicine, A Review Article
Get PDFWith the development of human's modern society more and more people tend to use complementary and alternative medicine (CAM). Toxicological studies indicated that many herbal medicines have direct toxic effects on the circulatory system or cardiovascular system and cause harmful effects on the body. Cardiotoxicity or heart damage is a serious issue defined as heart electrophysiology dysfunction, affecting the cardiac structure, and muscle damage that arises from the drug or chemical poisoning agents, that may lead to heart failure. The aim of this review article is to provide various information about the potential adverse effects of herbal medicine on the cardiovascular system and introduce herbs that induced cardiac toxicity. To provide this review, all reported cases of cardiac toxicity induced by herbal medicines and natural products were collected through research articles and documents, and the most relevant articles, and books in various authentic search engines including Scopus, PubMed, SID (scientific information database), Science Direct and Google Scholar, from 1984 to April 2022 were searched, and selected herbs with therapeutic properties which induce toxic effects on the cardiovascular system are introduced. In this review, scientific data regarding cardiotoxicity showed that 16 herbs from 11 families may increase cardiac toxicity. Therefore, it's important to use herbal medicines and natural products under the guidance of medical professionals
Antibacterial Activity of Honeybee Venom Against Pathogenic Bacteria in Comparison with Common Antibiotics
Get PDFAntibiotic resistance has dramatically spread in recent decades and has become a serious problem in modern medicine. Honeybee venom or bee venom (BV) has anticancer, anti-inflammation, and antimicrobial properties. This study aimed to evaluate the influence of BV on certain pathogenic bacteria. The effects of different concentrations of BV against Klebsiella pneumonia, Pseudomonas aeruginosa, and Staphylococcus aureus were evaluated by disk diffusion method (inhibition zone, IZ), minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC). Additionally, the antibacterial activity of BV was compared with that of ampicillin, penicillin, and tetracycline. The results indicated that different concentrations of BV had an inhibitory effect on the pathogen species. The MIC and MBC of BV were 18 and 24 μg/mL for K. pneumonia, respectively, 38 and 42 μg/mL for P. aeruginosa, respectively, and 21 and 31 μg/mL for S. aureus, respectively. Among the bacterial species tested, BV was the most effective against K. pneumonia. Meanwhile, P. aeruginosa was the most resistant against BV. The comparison revealed that 100 μg/mL BV had a greater effect on IZ against P. aeruginosa and K. pneumonia compared with evaluated common antibiotics (p \u3c 0.05). This study showed that BV demonstrated antibacterial effects. Precise toxicology examinations are required for the development of new antibiotics
Comparative Effect of Honey Bee Venom and Common Antifungal Agents on Candida albicans
Get PDFFungal infections, can cause various symptoms in different forms, and are associated with high morbidity and mortality in vulnerable groups. one of the most significant fungal infection is candidiasis which caused by Candida. In recent years, there has been growing worried about the challenging of fungal diseases treatment and unwanted consequence of synthetic antifungal drugs. This necessitates the searching for new classes of broad-spectrum anti-fungal drugs to bring pharmaceutical characteristics and more efficient treatments. Bee venom (BV) is an antimicrobial agent which has been widely used to treat various diseases. the aim of the current study was to examine the antifungal properties of honey bee venom on Candida albicans to compare it to some common antifungal drugs (ketoconazole and amphotericin B). to perform this assay, the standard strains of C. albicans (ATCC10231) was used for antimicrobial assessment, and Disc diffusion assay and the microbroth dilution method were used to evaluate the anti fungal activity of (BV). The result of this study showed that BV, amphotericin B and ketoconazole had inhibitory effects on C. albicans which MIC of the were measured to be 118.2, 3.3 and 2 respectively, furthermore, Comparison of BV and common antifungal drugs demonstrated that, amphotricin B and ketoconazole have a better effect on C. albicans
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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