scholarly journals Ethiopian medicinal plants used for their anti-inflammatory, wound healing or anti-infective activities: protocol for systematic literature review and meta-analysis

2020 ◽  
Vol 4 (1) ◽  
pp. e100064
Author(s):  
Dereje Nigussie ◽  
Belete Adefris Legesse ◽  
Gail Davey ◽  
Abebaw Fekadu ◽  
Eyasu Makonnen

ObjectivesMedicinal plants are used globally as alternative medicines in the management of a range of disease conditions and are widely accepted across differing societies. Ethiopia hosts a large number of plant species (>7000 higher plant species), of which around 12% are thought to be endemic, making it a rich source of plant extracts potentially useful for human health. The aim of this review is to evaluate Ethiopian medicinal plants for their anti-inflammatory, wound healing, antifungal or antibacterial activities.Methods and analysisThe guidance of the Preferred Reporting Items for Systematic Review and Meta-analysis Protocols (PRISMA-P) statement will be used. This review will consider all controlled studies of anti-inflammatory and wound healing properties (both in vivo and in vitro) and in vitro anti-infective properties of medicinal plants found in Ethiopia. Data sources will be EMBASE, PubMed/Medline, Scopus and Google Scholar. Guidance documents on good in vitro methods and checklists for reporting in vitro studies will be used for quality assessment of in vitro studies. The risk of bias tool for animal intervention studies (the SYRCLE RoB tool) will be used to assess the validity of studies. The main outcomes will be percent inhibition of inflammation, time of epithelisation and tissue tensile strength in wounds and microbial growth inhibition.Ethics and disseminationThe findings of this systematic review will be disseminated by publishing in a peer-reviewed journal and via conference presentations. Ethical clearance was obtained from the Brighton and Sussex Medical School, Research Governance & Ethics Committee (RGEC) and Addis Ababa University, College of Health Science, Institutional Review Board.PROSPERO registration numberThis systematic literature review has been registered with PROSPERO (registration number CRD42019127471).

2021 ◽  
pp. 30-48
Author(s):  
Andrei Anatolevich Mudrov ◽  
Aleksandr Yur’evich Titov ◽  
Mariyam Magomedovna Omarova ◽  
Sergei Alekseevich Frolov ◽  
Ivan Vasilevich Kostarev ◽  
...  

Despite the large number of available surgical interventions aimed at the treatment of rectovaginal fistulas, the results of their use remain extremely disappointing, associated with the high recurrence rate of the disease reaching 80 %, as well as the lack of a single tactic to minimize the risk of anal incontinence and the need for colostomy. Objective: to conduct a systematic literature review in order to summarize information related to the rectovaginal fistulas surgery. The systematic review includes the results of an analysis of 97 clinical trials selected from 756 publications found in databases. Inclusion criteria: a full-text article, the presence of at least 5 patients in the study, as well as data on the outcome of surgery. Clinical trials with different surgical treatments were identified and classified into the following categories: elimination of the rectovaginal septal defect with a displaced flap (rectal and vaginal); Martius surgery; gracilis muscle transposition; transperineal procedure; abdominal procedure including endoscopic and laparoscopic methods; use of biological or biocompatible materials. Treatment outcomes vary significantly from 0 % to > 80 %. None of the studies were randomized. Due to the low quality of the identified studies, comparison of results and meta-analysis conduction were not possible. Conclusion: as a result of the systematic review, data for the analysis and development of any strategic and tactical algorithms for the treatment of RVF were not obtained. The most important questions still remain open: what and when surgical method to choose, is it necessary to form a disconnecting stoma?


BMJ Open ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. e048367
Author(s):  
Anna Julia Pedrosa Carrasco ◽  
Felicitas Mügge ◽  
David José Pedrosa

IntroductionIdiopathic Parkinson syndrome (iPS) is one of the most common neurodegenerative disorders characterised by the triad of bradykinesia, rigidity and tremor. Tremor at rest predominantly at one side is often perceived by patients as severely disabling and yet ranges among the most difficult symptoms to treat. In medically refractory cases, lesional approaches have proven to be effective alternatives. However, to date, there is no comprehensive analysis of non-surgical therapies to manage iPS-patients’ tremor. We therefore present a detailed study protocol for a systematic literature review assessing efficacy/effectiveness and safety of non-lesional treatments for tremor in iPS.Methods and analysisWe will search three electronic databases (MEDLINE, EMBASE and PsycINFO) using a combination of title/abstract keywords. Additionally, hand-searched reference and citation lists of key reviews identified through the search strategy will be screened. Eligible studies should investigate the efficacy/effectiveness and safety of therapeutic options for tremor in iPS excluding lesional interventions. Publications will be independently assessed for inclusion criteria by two investigators and study information summarised using a standardised template including quality assessment according to the QualSyst tool. We will provide a narrative synthesis of results and conduct a meta-analysis whenever possible.Ethics and disseminationWe commit to present contemporary evidence on the efficacy/effectiveness and safety of non-lesional interventions for tremor in iPS in a future publication. We aim to compile rich data of published studies to inform healthcare professionals in order to ultimately improve patient outcomes.PROSPERO registration numberCRD42020202911).


2019 ◽  
Author(s):  
Eduardo Silva ◽  
Paulo Gabriel

This paper reports a systematic review of the literature about genetic algorithms applied to the multiprocessor task scheduling problem. After defining a protocol with the main rules of this review, the research was performed considering journal papers published between 1990 and 2018. At the end of this process, 37 works were recovered and analyzed. By performing a meta-analysis, a variety of information was extracted and summarized, including impact factor, Eigenfactor score, scenarios considered, optimization metrics, volume of citations, and others.


2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Elahe Tajbakhsh ◽  
Tebit Emmanuel Kwenti ◽  
Parya Kheyri ◽  
Saeed Nezaratizade ◽  
David S. Lindsay ◽  
...  

Abstract Background Malaria still constitutes a major public health menace, especially in tropical and subtropical countries. Close to half a million people mainly children in Africa, die every year from the disease. With the rising resistance to frontline drugs (artemisinin-based combinations), there is a need to accelerate the discovery and development of newer anti-malarial drugs. A systematic review was conducted to identify the African medicinal plants with significant antiplasmodial and/or anti-malarial activity, toxicity, as wells as assessing the variation in their activity between study designs (in vitro and in vivo). Methods Key health-related databases including Google Scholar, PubMed, PubMed Central, and Science Direct were searched for relevant literature on the antiplasmodial and anti-malarial activities of African medicinal plants. Results In total, 200 research articles were identified, a majority of which were studies conducted in Nigeria. The selected research articles constituted 722 independent experiments evaluating 502 plant species. Of the 722 studies, 81.9%, 12.4%, and 5.5% were in vitro, in vivo, and combined in vitro and in vivo, respectively. The most frequently investigated plant species were Azadirachta indica, Zanthoxylum chalybeum, Picrilima nitida, and Nauclea latifolia meanwhile Fabaceae, Euphorbiaceae, Annonaceae, Rubiaceae, Rutaceae, Meliaceae, and Lamiaceae were the most frequently investigated plant families. Overall, 248 (34.3%), 241 (33.4%), and 233 (32.3%) of the studies reported very good, good, and moderate activity, respectively. Alchornea cordifolia, Flueggea virosa, Cryptolepis sanguinolenta, Zanthoxylum chalybeum, and Maytenus senegalensis gave consistently very good activity across the different studies. In all, only 31 (4.3%) of studies involved pure compounds and these had significantly (p = 0.044) higher antiplasmodial activity relative to crude extracts. Out of the 198 plant species tested for toxicity, 52 (26.3%) demonstrated some degree of toxicity, with toxicity most frequently reported with Azadirachta indica and Vernonia amygdalina. These species were equally the most frequently inactive plants reported. The leaves were the most frequently reported toxic part of plants used. Furthermore, toxicity was observed to decrease with increasing antiplasmodial activity. Conclusions Although there are many indigenous plants with considerable antiplasmodial and anti-malarial activity, the progress in the development of new anti-malarial drugs from African medicinal plants is still slothful, with only one clinical trial with Cochlospermum planchonii (Bixaceae) conducted to date. There is, therefore, the need to scale up anti-malarial drug discovery in the African region.


2021 ◽  
Vol 12 ◽  
Author(s):  
Dereje Nigussie ◽  
Gail Davey ◽  
Takele Beyene Tufa ◽  
Malcolm Brewster ◽  
Belete Adefris Legesse ◽  
...  

Background: Podoconiosis and lymphatic filariasis are the most common causes of lower limb lymphoedema in the tropics. Many sufferers experience frequent painful episodes of acute bacterial infection. Plant based traditional medicines are used to treat infections in many countries and are culturally established in Ethiopia. Ethiopian medicinal plants found to have antibacterial and antifungal activities were reviewed with the aim of increasing information about the treatment of wound infections in patients with lymphoedema.Methods: This study collates data from published articles on medicinal plants with antibacterial and antifungal activities in Ethiopia. A systematic search of Scopus, EMBASE, PUBMED/MEDLINE and Google Scholar was undertaken. The Preferred Reporting Items for Systematic Reviews and Meta-analysis (PRISMA) guidelines were followed. The protocol was registered on PROSPERO with registration number CRD42019127471. All controlled studies of in vitro antibacterial and antifungal activities were considered. All articles containing the descriptors published until June 28, 2019 were included. The outcome was measured as percent inhibition of microbial growth. For quality assessment of individual in vitro studies, OECD guidelines and the WHO-Good Laboratory Practice (GLP) handbook were used.Results: Seventy-nine studies met the inclusion criteria. A total of 150 plant species and three compounds had been tested against 42 species of bacteria, while 43 plant species had been tested against 22 species of fungus.Conclusion: Materials derived from several Ethiopian medicinal plants have been shown to have promising activity against a variety of bacteria and fungi. Those derived from Azadiractha indica A. Juss. and Lawsonia inerms L. are the most extensively studied against a wide range of gram-negative and positive bacteria, and fungal species.


2020 ◽  
Vol 12 (12) ◽  
pp. 4810 ◽  
Author(s):  
Hanna Górska-Warsewicz ◽  
Olena Kulykovets

The aim of this study was to analyze hotel brand loyalty (HBL) based on a systematic literature review conducted according to the preferred reporting items for systematic reviews and meta-analysis (PRISMA) statements. Following these statements, we searched two databases (Scopus and Web of Science) for studies containing the term ‘hotel brand loyalty’. Additionally, the backward and forward snowballing methods were applied. Only empirical studies concerning loyalty towards brand hotels were included, resulting in 26 studies in the final review. The quality of the various studies was evaluated according to the Joanna Briggs Institute critical appraisal checklist. The studies included in the systematic review were analyzed in three areas: general details and study design (authorship, year of publication, type of study, research country or location, characteristic of the sample population, the purpose of stay or travel, type of hotels, hotel brands), research specifications (factors/variables, hypotheses, measurement items, data analysis), and general findings (findings related to HBL and managerial recommendations). To summarize the results, word cloud visualization was applied. For studies included in the systematic review, HBL was analyzed on two levels: in the context of factors determining the guest/tourist loyalty to the hotel brands (such as frequently mentioned brand awareness, brand image, and perceived quality) as well as those pertaining to models of brand equity. This highlighted the need for managers to perform activities in terms of brand experience and shape long-term relationships in order to strengthen loyalty to hotel brands.


2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Sara H. Freiesleben ◽  
Jens Soelberg ◽  
Nils T. Nyberg ◽  
Anna K. Jäger

The present study was carried out to investigate the wound healing potentials of 17 medicinal plants historically used in Ghana for wound healing. Warm and cold water extracts were prepared from the 17 dried plant species and tested in vitro in the scratch assay with NIH 3T3 fibroblasts from mice. The wound healing scratch assay was used to evaluate the effect of the plants on cell proliferation and/or migration in vitro, as a test for potential wound healing properties. After 21 hours of incubation increased proliferation and/or migration of fibroblasts in the scratch assay was obtained for 5 out of the 17 plant species. HPLC separation of the most active plant extract, which was a warm water extract of Philenoptera cyanescens, revealed the wound healing activity to be attributed to rutin and a triglycoside of quercetin. The present study suggests that Allophylus spicatus, Philenoptera cyanescens, Melanthera scandens, Ocimum gratissimum, and Jasminum dichotomum have wound healing activity in vitro.


2020 ◽  
Vol 5 (1) ◽  
pp. 20-22
Author(s):  
Saravanan Vivekanandarajah Sathasivampillai ◽  
Moon Jain ◽  
Pholtan Rajeev Sebastian Rajamanoharan

Guettarda speciosa L. is a tree of the Rubiaceae family. G. specious has been used to treat diarrhea, abscesses, wounds, epilepsy, and malaria in ethnomedicinal systems. So far, there is no systematic review for the bioactivities of G. speciosa. Therefore, the purpose of this minireview is to analyze, summarize and document the reported bioactivities of G. speciosa. Major electronic databases (Web of Science, Scopus, ScienceDirect, PubMed, and Semantic Scholar) were used to identify related studies from 1900 to January 2021. So far, in vivo and in vitro scientific data are available for the bioactivities of this plant species. Studies have reported that G. speciosa contains antidiarrheal, antiepileptic, anti-inflammatory, anti-ulcer, antimalarial, antineurodegenerative, and antioxidant activities. Furthermore, no bioactive compound of G. speciosa has been isolated. This work will be useful for researchers interested in bioactivity and phytochemical researches.


2021 ◽  
Vol 2 (1) ◽  
pp. 25-37
Author(s):  
Nazirah Nazir

In the era of globalization today, Green technology acceptance has become a crucial sector not just for the environment, but also for humans and towards the economy. In this paper, the researcher will do the overview of Green Technology Acceptance as overall, means in many areas such as green transportation, green chemistry, green buildings, green procurements and few more. So, for this purpose the researcher choose to use the Scopus database to review on the past published studies on green technology fields. For this purpose, the Qualitative review has been done by the systematic review through the PRISMA Framework (Preferred Reporting Items for Systematic Review and Meta-Analysis). There are around 46 papers that had been selected in finals for this systematic literature review analysis. After follow the PRISMA Model to filter out the paper that suitable for this study, researcher is using the Microsoft Excels to do the descriptive analysis on year base publication, journal base, most cited by, theory utilised and subject areas. Besides that, researcher also focus on the methodology classification that had been use in the past studies. There are three main classifications which is Quantitative, Qualitative and Mixed Methods. There are around 26 paper used quantitative analysis method, 17 papers utilised qualitative method and 3 papers using mixed method. Mostly all this past study not including the latest branches of Green Technology such as green economies, green building and many more. As overall, researcher successfully using the PRISMA model to identified the suitable paper that being used in this papers.


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