Critical evaluation of migration studies of silver nanoparticles present in food packaging: a systematic review

Abstract Background Coronary stents are routinely placed in the treatment and prophylaxis of coronary artery disease (CAD). Current coronary stent designs are prone to developing blockages: in-stent thrombosis (IST) and in-stent re-stenosis (ISR). This is a systematic review of the design of current coronary stent models, their structural properties and their modes of application, with a focus on their associated risks of IST and ISR. The primary aim of this review is to identify the best stent design features for reducing the risk of IST and ISR. To review the three major types of stents used in clinical settings today, determining best and relevant clinical practice by exploring which types and features of offer improved patient outcomes regarding coronary angioplasty. This information can potentially be used to increase the success rate of coronary angioplasty and stent technology in the future taking into account costs and benefits. Methods Scientific databases were searched to find studies concerning stents. After the exclusion criteria were applied, 19 of the 3192 searched literature were included in this review. Studies investigating three major types of stent design were found: bare-metal stents (BMS), drug-eluting stents (DES) and bioresorbable stents (BRS). The number of participants varied between 14 and 1264. On average 77.4% were male, with a mean age of 64 years. Results From the findings of these studies, it is clear that DES are superior in reducing the risk of ISR when compared to BMS. Conflicting results do not clarify whether BRS are superior to DES at reducing IST occurrence, although studies into newer BRS technologies show reducing events of IST to 0, creating a promising future for BRS showing them to be non-inferior. Thinner stents were shown to reduce IST rates, due to better re-endothelialisation. Scaffold material has also been shown to play a role with cobalt alloy stents reducing the risk of IST. This study found that thinner stents that release drugs were better at preventing re-blockages. Some dissolvable stents might be better at stopping blood clots blocking the arteries when compared to metal stents. The method and procedure of implanting the stent during coronary angioplasty influences success rate of these stents, meaning stent design is not the only significant factor to consider. Conclusions Positive developments in coronary angioplasty could be made by designing new stents that encompass all the most desirable properties of existing stent technology. Further work is needed to investigate the benefits of BRS in reducing the risk of IST compared to DES, as well as to investigate the effects of different scaffold materials on IST and ISR outcomes.

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Analysis of Gabapentin’s Efficacy in Tinnitus Treatment: A Systematic Review

Annals of Otology Rhinology & Laryngology ◽

10.1177/00034894211018921 ◽

2021 ◽

pp. 000348942110189

Author(s):

Matheus Pedrosa Tavares ◽

Fayez Bahmad

Keyword(s):

Systematic Review ◽

Controlled Trial ◽

Critical Evaluation ◽

Outcome Study ◽

Qualitative Synthesis ◽

Eligibility Criteria ◽

Double Blind ◽

Randomized Controlled ◽

Study Selection ◽

Tinnitus Treatment

Objectives: Tinnitus can be a chronic symptom that brings disability and distress. Some studies suggested that gabapentin might be effective on tinnitus relief. The objective of the study is to perform a systematic review in order to evaluate the efficacy of oral gabapentin in patients with tinnitus. Methods: A literature search was conducted in English and following the recommendations from PRISMA. The terms used were: (“tinnitus” OR “subjective tinnitus”) AND (“gabapentin”). The study selection was performed following the eligibility criteria in accordance to the PICOS (population, intervention, comparison, outcome, study design) strategy—patients with tinnitus; oral gabapentin; placebo; reduction of tinnitus severity questionnaires scores; prospective, double-blind, randomized controlled trial, respectively. The selected studies were included in qualitative synthesis. The studies were analyzed according to Joanna Briggs Institute’s critical appraisal checklist for randomized controlled trials. Results: One hundred twenty-one studies were found in 9 databases and 8 studies were found in gray literature. After study selection, 6 articles were read in full. Then, 2 studies were excluded and 4 were included in qualitative synthesis. All 4 articles were analyzed according to critical evaluation checklist. Conclusions: There is insufficient evidence to recommend the use of gabapentin for patients with tinnitus.

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Biosynthesis, Characterization, and Biological Activities of Procyanidin Capped Silver Nanoparticles

Journal of Functional Biomaterials ◽

10.3390/jfb11030066 ◽

2020 ◽

Vol 11 (3) ◽

pp. 66

Author(s):

Umar M. Badeggi ◽

Jelili A. Badmus ◽

Subelia S. Botha ◽

Enas Ismail ◽

Jeanine L. Marnewick ◽

...

Keyword(s):

Silver Nanoparticles ◽

Food Packaging ◽

Antioxidant Activities ◽

Biological Activities ◽

Bacterial Species ◽

Bactericidal Effect ◽

Total Extract ◽

Selected Area Electron Diffraction ◽

Ic50 Values ◽

Inhibitory Activities

In this study, procyanidin dimers and Leucosidea sericea total extract (LSTE) were employed in the synthesis of silver nanoparticles (AgNPs) and characterized by ultraviolet-visible (UV-Visible) spectroscopy, high-resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), X-ray diffraction (XRD), and dynamic light scattering (DLS) techniques. AgNPs of about 2–7 nm were obtained. DLS and stability evaluations confirmed that the AgNPs/procyanidins conjugates were stable. The formed nanoparticles exhibited good inhibitory activities against the two enzymes studied. The IC50 values against the amylase enzyme were 14.92 ± 1.0, 13.24 ± 0.2, and 19.13 ± 0.8 µg/mL for AgNPs coordinated with LSTE, F1, and F2, respectively. The corresponding values for the glucosidase enzyme were 21.48 ± 0.9, 18.76 ± 1.0, and 8.75 ± 0.7 µg/mL. The antioxidant activities were comparable to those of the intact fractions. The AgNPs also demonstrated bacterial inhibitory activities against six bacterial species. While the minimum inhibitory concentrations (MIC) of F1-AgNPs against Pseudomonas aeruginosa and Staphylococcus aureus were 31.25 and 15.63 µg/mL respectively, those of LSTE-AgNPs and F2-AgNPs against these organisms were both 62.50 µg/mL. The F1-AgNPs demonstrated a better bactericidal effect and may be useful in food packaging. This research also showed the involvement of the procyanidins as reducing and capping agents in the formation of stable AgNPs with potential biological applications.

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Sustainable use of biowaste for synthesis of silver nanoparticles and its incorporation into gelatin‐based nanocomposite films for antimicrobial food packaging applications

Journal of Food Process Engineering ◽

10.1111/jfpe.13641 ◽

2021 ◽

Author(s):

Elumalai Kowsalya ◽

Kithiyon MosaChristas ◽

Pannerselvam Balashanmugam ◽

Veerasamy Manivasagan ◽

Thiyagarajan Devasena ◽

...

Keyword(s):

Silver Nanoparticles ◽

Food Packaging ◽

Sustainable Use ◽

Nanocomposite Films

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Measuring Instruments In Cardiology Adapted Into Portuguese Language Of Brazil: A Systematic Review

Revista da Escola de Enfermagem da USP ◽

10.1590/s0080-6234201400002000023 ◽

2014 ◽

Vol 48 (2) ◽

pp. 368-376 ◽

Cited By ~ 2

Author(s):

Marilia Estevam Cornélio ◽

Neusa Maria Costa Alexandre ◽

Thaís Moreira São-João

Keyword(s):

Systematic Review ◽

Cultural Adaptation ◽

Methodological Quality ◽

Scientific Community ◽

Health Knowledge ◽

Critical Evaluation ◽

Measurement Properties ◽

Measuring Instruments ◽

Adaptation Process

This was a systematic review aimed at identifying and characterizing measuring instruments, developed in the context of cardiology, which were adapted into Portuguese language of Brazil. Systematic searches were performed in six databases. Information extracted included cultural adaptation process and measurement properties. To assess the methodological quality of studies, criteria based on international guidelines for cultural adaptation of instruments were used. Among the 114 articles found, 14 were eligible for review. Of these, most evaluated quality of life (35.7%) and health knowledge/learning (28.6%). Most studies followed all stages of the adaptation process recommended in the literature. With respect to measurement properties, internal consistency, verified by Cronbach’s alpha, was the property reported in the majority of the studies, as well as construct and criterion validity. This study is expected to provide to the scientific community a critical evaluation of adapted questionnaires available in the context of cardiology. 

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Evaluation of Antimicrobial Activity of Silver Nanoparticles for Carboxymethylcellulose Film Applications in Food Packaging

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2014.8991 ◽

2014 ◽

Vol 14 (7) ◽

pp. 5512-5517 ◽

Cited By ~ 23

Author(s):

Maria C. Siqueira ◽

Gustavo F. Coelho ◽

Marcia R. de Moura ◽

Joana D. Bresolin ◽

Silviane Z. Hubinger ◽

...

Keyword(s):

Antimicrobial Activity ◽

Silver Nanoparticles ◽

Food Packaging

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Effects of Light Treatment on Sleep, Cognition, Mood, and Behavior in Alzheimer’s Disease: A Systematic Review

Dementia and Geriatric Cognitive Disorders ◽

10.1159/000494921 ◽

2018 ◽

Vol 46 (5-6) ◽

pp. 371-384 ◽

Cited By ~ 18

Author(s):

Micaela Mitolo ◽

Caterina Tonon ◽

Chiara La Morgia ◽

Claudia Testa ◽

Valerio Carelli ◽

...

Keyword(s):

Systematic Review ◽

Alzheimer’S Disease ◽

Alzheimer's Disease ◽

Task Force ◽

Critical Evaluation ◽

Bright Light ◽

Light Treatment ◽

Intervention Treatment ◽

And Behavior ◽

Bright Light Treatment

Background: Bright light treatment is a therapeutic intervention mainly used to treat sleep and circadian disturbances in Alzheimer’s disease (AD) patients. Recently, a handful of studies also focused on the effect on cognition and behavior. Conflicting findings are reported in the literature, and no definite conclusions have been drawn about its specific therapeutic effect. Summary: The aim of this review is to provide a critical evaluation of available evidence in this field, highlighting the specific characteristics of effective bright light treatment. Eligible studies were required to assess at least one of the following outcome measures: sleep, cognition, mood, and/or behavior (e.g., depression, agitation). A total of 32 articles were included in this systematic review and identified as research intervention studies about light treatment in AD. The quality of the papers was evaluated based on the US Preventive Service Task Force guidelines. Key Messages: Overall, the current literature suggests that the effects of light treatment in AD patients are mixed and may be influenced by several factors, but with a general trend toward a positive effect. Bright light seems to be a promising intervention treatment without significant adverse effects; therefore, further well-designed randomized controlled trials are needed taking into account the highlighted recommendations.

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