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1.
Cureus ; 16(3): e56489, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38638762

ABSTRACT

Foreign body (FB) aspiration is a matter that should not be taken lightly. The presence of a foreign object might lead to hazardous complications, particularly in the pediatric population. These complications depend on the type and location of the aspirated object as the tracheobronchial tree has a very small diameter, and foreign bodies become stuck in the upper airways of children, causing stridor and sudden difficulty in breathing. Impaction of a foreign body in the right bronchial tree is more frequent due to the relatively straighter alignment of the right mainstem of the trachea, as opposed to the left side. Herein, we present a 10-year-old Malay boy who accidentally aspirated a pencil cap. An urgent computed tomography (CT) of the thorax revealed a suspicious intraluminal FB in the bronchus leading to pneumothorax and pneumomediastinum. He underwent a right bronchoscopy and a successful FB removal.

2.
Phys Eng Sci Med ; 2024 Apr 18.
Article in English | MEDLINE | ID: mdl-38634981

ABSTRACT

Modern radiotherapy techniques have advanced and become more sophisticated. End-to-end 3D verification of the complex radiotherapy dose distribution in an anthropomorphic phantom can ensure the accuracy of the treatment delivery. The phantoms commonly used for dosimetry are homogeneous solid water phantom which lacks the capability to measure the 3D dose distribution for heterogeneous tissues necessary for advanced radiotherapy techniques. Therefore, we developed an end-to-end 3D radiotherapy dose verification system based on MAX-HD anthropomorphic phantom (Integrated Medical Technologies Inc., Troy, New York) with bespoke intracranial insert for PRESAGE® dosimeter. In this study, several advanced radiotherapy treatment techniques of various levels of complexity; 3D-CRT, IMRT and VMAT treatment, were planned for a 20 mm diameter of a spherical target in the brain region and delivered to the phantom. The dosimeters were read out using an in-house developed optical computed tomography (OCT) imaging system known as 3DmicroHD-OCT. It was found that the measured dose distribution of the PRESAGE® when compared with the measured dose distribution of EBT film and Monaco TPS has a maximum difference of less than 3% for 3D-CRT, IMRT and VMAT treatment plans. The gamma analysis results of PRESAGE® in comparison to EBT film and Monaco TPS show pass rates of more than 95% for the criteria of 3% dose difference and 3 mm distance-to-agreement. This study proves the capability of PRESAGE® and bespoke MAX-HD phantom in conjunction with the 3DmicroHD-OCT system to measure 3D dose distribution for end-to-end dosimetry verification.

3.
Cureus ; 15(11): e48901, 2023 Nov.
Article in English | MEDLINE | ID: mdl-38106721

ABSTRACT

A woman in her fifty-seventh year appeared with a painless swelling on her left lower lip that had been present for three years. The size of the swelling was noticeably increasing in size over time. On examination, there was a lump that was firm, non-tender, and measured 2 cm x 1 cm above the lower lip. The oral cavity, as well as the intraoral mucosa, were normal and unremarkable in appearance. As fine-needle aspiration cytology revealed a spindle cell lesion, she had an excision biopsy performed, followed by bilateral advancement flap closure. Histopathological examination (HPE) revealed a schwannoma in the tissue sample. Schwannomas are rare, benign neural tumors originating from Schwann cells. They are mainly asymptomatic and have a moderate rate of growth. Excision is the recommended treatment for schwannomas. Proper surgical planning and postoperative monitoring are crucial for optimal wound healing and complete recovery.

4.
Biomedicines ; 11(11)2023 Oct 25.
Article in English | MEDLINE | ID: mdl-38001886

ABSTRACT

Active matrix metalloproteinase-8 (aMMP-8) is a promising biomarker candidate for the modern periodontal and peri-implant disease diagnostics utilizing the chairside/point-of-care oral fluid technologies. These rapid biomarker analysis technologies utilize gingival crevicular fluid (GCF), peri-implant sulcular fluid (PISF), or mouth rinse as the oral fluid matrices that can be collected patient-friendly and non-invasively without causing bacteremia. aMMP-8, but not total or latent proMMP-8, has been shown to be a relevant biomarker to be implemented to the latest 2017 classification system of periodontitis and peri-implantitis. Thus, aMMP-8 point-of-care-testing (POCT)-but not total or latent proMMP-8-can be conveniently used as an adjunctive and preventive diagnostic tool to identify and screen the developing and ongoing periodontal and peri-implant breakdown and disease as well as predict its episodic progression. Similarly, aMMP-8 POCT provides an important tool to monitor the treatment effect of these diseases, but also other diseases such as head and neck cancer, where it can identify and predict the rapid tissue destructive oral side-effects during and after the radiotherapy. Additionally, recent studies support aMMP-8 POCT benefitting the identification of periodontitis and diabetes as the escalating risk diseases for COVID-19 infection. Overall, aMMP-8 POCT has launched a new clinical field in oral medicine and dentistry, i.e., oral clinical chemistry.

5.
Biomimetics (Basel) ; 8(5)2023 Aug 26.
Article in English | MEDLINE | ID: mdl-37754143

ABSTRACT

High-strength grout is specified to increase the bond between grout and bar in grouted connections and to ensure that the forces in the bars can be transferred to the surrounding material accordingly. Although polymer grout is fast setting and rapid in strength development, the use of polymer mortar in grouted connections is still limited because of the lack of information and familiarity practitioners have regarding the product. The goal of this work is to investigate the mechanical characteristics and performance of polyester grout containing fly ash that can be used as an infill material for grouted connections. This study focused on the composition of polymer grout, which typically consists of a binder, hardener, and filler. In this particular case, the binder was made of unsaturated polyester resin and hardener, while the filler was fine sand. The aim of the research was to investigate the potential benefits of incorporating fly ash as an additional filler in polymer resin grout and examine the mechanical properties of polymer resin grout. To this end, varying amounts of fly ash were added to the mix, ranging from 0% to 32% of the total filler by volume, with a fixed polymer content of 40%. The performance of the resulting grout was evaluated through flowability, compression, and splitting tensile tests. The results of the experiments showed that, at a fly ash volume of 28%, the combination of fine sand and fly ash led to an improvement in grout strength; specifically, at this volume of fly ash, the compressive and tensile strengths increased by 24.7% and 124%, respectively, compared to the control mix. However, beyond a fly ash volume of 28%, the mechanical properties of the grout started to deteriorate. Due its superior properties in terms of compressive and flexural strengths over all examined mixes, the PRG-40-28 mix is ideal for use in the infill material for mechanical connections.

6.
Pharm. pract. (Granada, Internet) ; 21(3): 1-8, jul.-sep. 2023. graf, tab
Article in English | IBECS | ID: ibc-226182

ABSTRACT

Background: The COVID-19 pandemic caused a significant increase in deaths globally. However, there is a scarcity of data addressing risk factors associated with mortality among hospitalised COVID-19 patients in Malaysia. This study aimed to identify the predictors of death among hospitalised COVID-19 patients in Malaysia. Methods: A retrospective cross-sectional study was conducted at two public hospitals in East Coast Malaysia from February 2020 to August 2021. The study included all hospitalised COVID-19 patients by extracting data from the electronic medical records focusing on patient demographics and clinical outcomes. Univariable and multivariable logistic regression analyses were conducted to evaluate association between risk factors and mortality among COVID-19 patients. Results: A total of 1060 patients were included (59% male) with median age of 41.5 years (IQR 27 – 58.5). Multivariable logistic regression showed that factors contributing to mortality of COVID-19 patients were elderly (OR, 1.04; 95% CI, 1.02, 1.06; p = 0.001), chronic kidney disease (OR, 3.75; 95% CI, 1.25, 11.27; p = 0.019), an increased point of CCI score (OR, 1.59; 95% CI, 1.25, 2.05; p = ≤0.05), progression to severe stage (OR, 40.68; 95% CI, 17.55, 94.31; p = ≤ 0.05) and admitted to intensive care unit (ICU) (OR, 2.68; 95% CI, 1.16, 6.17, p = 0.021). Conclusion: Patients who were elderly, with chronic kidney disease, multiple comorbidities, progressed to severe stage and admitted to ICU were at significantly increased risk of mortality. These findings highlight the importance of implementing extra monitoring and aggressive preventive measures for high-risk patients, in order to reduce their mortality risk and improve patient outcomes. (AU)


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Pandemics , Coronavirus Infections/epidemiology , Coronavirus Infections/mortality , Retrospective Studies , Cross-Sectional Studies , Malaysia , Severe acute respiratory syndrome-related coronavirus
7.
World J Urol ; 41(9): 2437-2442, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37493708

ABSTRACT

PURPOSE: To present the seven-year experience of a multi-component and interactive module on female, neurological and urodynamic urology (FNUU) training at the UK National Urology Simulation Bootcamp Course (USBC) and demonstrate trainee satisfaction and competency progression. METHODS: During the week-long USBC, a four-hour module on FNUU was designed which consisted of short interactive presentations with an emphasis on practical stations in urodynamics, intravesical botulinum toxin injection, urethral bulking injection, female pelvic examination and, initially, mid-urethral tapes (subsequently replaced with percutaneous sacral nerve evaluation). The trainee's level of knowledge, operative experience and confidence were assessed pre- and post-course. The practical assessment consisted of preparation and intravesical administration of botulinum toxin, female pelvic examination, urodynamic trace interpretation or mid-urethral tape simulation. Trainee feedback was also collected. RESULTS: Two-hundred sixty-one newly appointed urology trainees participated in the USBC during this period. A high level of satisfaction was constantly reported. The highest rated session was urethral bulking with 72% being very satisfied, followed by Botox and urodynamics. The final assessment showed 70% had achieved level 4 competency in cystoscopy and Botox. Qualitative feedback was also obtained. CONCLUSION: To our knowledge, this is the first module of its kind, and it shows that it is feasible to develop, implement and evaluate an introductory curriculum into FNUU that is reproducible over a 7-year period with very positive feedback.


Subject(s)
Botulinum Toxins, Type A , Simulation Training , Urology , Humans , Female , Urology/education , Urodynamics , Clinical Competence , Curriculum
8.
Sci Rep ; 13(1): 11411, 2023 Jul 14.
Article in English | MEDLINE | ID: mdl-37452080

ABSTRACT

Centrality analysis is a crucial tool for understanding the role of nodes in a network, but it is unclear how different centrality measures provide much unique information. To improve the identification of influential nodes in a network, we propose a new method called Hybrid-GSM (H-GSM) that combines the K-shell decomposition approach and Degree Centrality. H-GSM characterizes the impact of nodes more precisely than the Global Structure Model (GSM), which cannot distinguish the importance of each node. We evaluate the performance of H-GSM using the SIR model to simulate the propagation process of six real-world networks. Our method outperforms other approaches regarding computational complexity, node discrimination, and accuracy. Our findings demonstrate the proposed H-GSM as an effective method for identifying influential nodes in complex networks.

9.
Local Reg Anesth ; 16: 59-69, 2023.
Article in English | MEDLINE | ID: mdl-37304230

ABSTRACT

Purpose: A subcostal flank incision is required for open radical nephrectomy, which is a surgical procedure used to remove tumors of the kidney that are malignant. The erector spinae plane block (ESPB) and continuous catheter use in children are receiving more and more support by paediatric regional anaesthesiologists. Our objective was to compare systemic analgesic to continuous ESPB for pain relief in paediatric patients undergoing open radical nephrectomy. Methods: Sixty children with cancer ASA I or II and undergoing open radical nephrectomy between the ages of two and seven participated in this prospective, randomized, controlled, and open label study. The cases were divided into two equal groups (E and T groups); Group E received ipsilateral continuous ultrasound-guided ESPB at T9 (thoracic vertebrae), with a bolus of 0.4 mL/kg bupivacaine 0.25%. Immediately postoperatively, Group E (ESPB group) received continuous ESPB with a PCA (patient controlled analgesia) pump at a rate of 0.2 mL/kg/hour bupivacaine 0.125%. Group T (Tramadol group), Tramadol hydrochloride was administered intravenously at a dose of 2 mg/kg/8hour, which could be increased to 2 mg/kg/6hours. Then, we followed up on patients' total analgesic consumption for 48 hours following surgery, as well as the time it took for them to request rescue analgesic, their FLACC and sedation scores, and their hemodynamics and side effects immediately following surgery as well as at 2, 4, 6, 8, 12, 18, 24, 36, and 48 hours. Results: A highly significant difference in total tramadol consumed in group T 11.97 ± 1.13 mg/kg while group E was 2.07± 1.54 mg/kg (p < 0.001). 100% patients in group T requested analgesia compared to 46.7% patients in group E (p < 0.001). From 2 to 48 hour, FLACC significantly decreased in E compared to T group (p≤ 0.006) at all-time points. Conclusion: Ultrasound-guided continuous ESPB significantly provided better postoperative pain relief, reduced postoperative tramadol consumption and reduced pain scores compared with the use of tramadol alone, in paediatric cancer patients undergoing nephrectomy.

10.
Clin Chim Acta ; 541: 117243, 2023 Feb 15.
Article in English | MEDLINE | ID: mdl-36740088

ABSTRACT

Macrophage activation and hypercytokinemia are notable presentations in certain viral infections leading to severe disease and poor prognosis. Viral infections can cause macrophage polarization into the pro-inflammatory M1 or anti-inflammatory M2 phenotype. Activated M1 macrophages usually restrict viral replication whereas activated M2 macrophages suppress inflammation and promote tissue repair. In response to inflammatory stimuli, macrophages polarize to the M2 phenotype expressing hemoglobin scavenger CD163 surface receptor. The CD163 receptor is shed as the soluble form, sCD163, into plasma or tissue fluids. sCD163 causes detoxification of pro-oxidative hemoglobin which produces anti-inflammatory metabolites that promote the resolution of inflammation. Hence, increased CD163 expression in tissues and elevated circulatory levels of sCD163 have been associated with acute and chronic inflammatory diseases. CD163 and other macrophage activation markers have been commonly included in the investigation of disease pathogenesis and progression. This review provides an overview of the involvement of CD163 in viral diseases. The clinical utility of CD163 in viral disease diagnosis, progression, prognosis and treatment evaluation is discussed.


Subject(s)
Antigens, CD , Virus Diseases , Humans , Antigens, CD/genetics , Receptors, Cell Surface/genetics , Inflammation , Biomarkers
11.
Asia Pac J Clin Oncol ; 19(1): 179-186, 2023 Feb.
Article in English | MEDLINE | ID: mdl-35686690

ABSTRACT

BACKGROUND: Immune checkpoint inhibitors (ICIs) have increased overall survival (OS) in metastatic melanoma in all clinical trials to date. However, pivotal trial populations were not representative of the real-world population in New Zealand. Real-world treatment effectiveness studies help evaluate the value of public pharmaceutical expenditure. AIM: To determine the survival outcomes of New Zealand patients with unresectable or metastatic melanoma treated with pembrolizumab or nivolumab. METHODS: This is a national retrospective cohort study. Patients with advanced unresectable or metastatic melanoma who received publicly funded immune-checkpoint inhibitors (ICIs) from 2017 to 2019 were included. Individual patient data were extracted from national administrative databases. The primary endpoint was OS, and secondary endpoints included OS by age, duration of treatment, posttreatment survival, and 30-day mortality from last pharmaceutical claim. RESULTS: Five hundred ninety-seven patients were included, with a median follow-up of 25 months. One-year OS was 72%, the 2-year OS estimate was 60%, and median OS not reached. Survival did not differ by dichotomized age (≥70 vs. <70 year old), hazard ratio (HR) .94 (95% confidence interval (CI): .72-1.22; p = .62). Median duration of treatment was 9.0 months (95% CI: 7.9-10.1). Median post-treatment survival for the subgroup who had ceased treatment was 12.0 months (95% CI: 9.0-14.0). For the sample as a whole, the estimated 30-day mortality from last pharmaceutical claim was 15.7%. CONCLUSION: OS in our New Zealand real-world population is comparable to pivotal clinical trials and real-world data (RWD) from other countries. These findings support the achievement of health gains from use of ICI in advanced unresectable and metastatic melanoma.


Subject(s)
Immune Checkpoint Inhibitors , Melanoma , Humans , Aged , Immune Checkpoint Inhibitors/therapeutic use , Retrospective Studies , New Zealand/epidemiology , Melanoma/pathology , Pharmaceutical Preparations
12.
Cureus ; 15(12): e50411, 2023 Dec.
Article in English | MEDLINE | ID: mdl-38213374

ABSTRACT

Oropharyngeal squamous cell carcinoma is a prevalent neoplastic condition. The incidence rate in Malaysia is rising, with human papillomavirus (HPV) infection being recognized as a significant contributing factor. Hence, it is paramount for physicians to effectively diagnose and identify significant indicators that may indicate a malignant etiology. In this study, we present a case of a middle-aged Malay male who presented with the primary symptom of persistent right throat discomfort for one month. The preliminary presentation, blood parameters, and initial histopathological examination (HPE) findings indicate the presence of an infection. However, despite undergoing several medical treatments, the patient's symptoms remain, albeit with only minor clinical improvement. Subsequently, the patient underwent a biopsy under general anesthesia, which subsequently yielded a report indicating the presence of oropharyngeal squamous cell carcinoma with a negative p16 status. Therefore, it is imperative for clinicians to possess knowledge of warning flags and exercise vigilance when encountering a patient who fails to respond despite thorough and precise evaluation. If there is a strong suspicion of malignancy, it is imperative to do a comprehensive clinical investigation and regular monitoring.

13.
Microorganisms ; 10(12)2022 Nov 27.
Article in English | MEDLINE | ID: mdl-36557599

ABSTRACT

The common methods that are presently used to identify Vibrio harveyi include microscopic examination and biochemical, immunological and PCR-based assays. These methods require technical expertise, and can be time-consuming. A rapid method is required for the high-throughput screening of large number of samples. As such, we have developed a rapid, simple yet sensitive and specific detection method based on the use of the loop-mediated isothermal amplification (LAMP) of DNA. A set of six primers, i.e., two outer, two inner and two loop primers, was designed based on the in silico analysis of a large pool of 39 strains of the toxR gene sequence of V. harveyi. The addition of the loop primers decreased the reaction time of the LAMP by more than half. Furthermore, with the application of SYBR Green, the result can be obtained as quickly as in 10 to 15 min without the need of gel electrophoresis. The specificity of the method primers was then determined by performing LAMP with Vibrio and non-Vibrio samples. LAMP has a greater sensitivity than PCR reaction. The sensitivity of PCR was at 0.6 pg concentration of V. harveyi recombinant plasmid DNA standard, while LAMP was able to detect lower amounts even at 0.6 fg. The development of the LAMP assay will provide a valuable tool for the high-throughput rapid detection of V. harveyi contamination both in laboratories and in the field.

14.
Polymers (Basel) ; 14(14)2022 Jul 16.
Article in English | MEDLINE | ID: mdl-35890665

ABSTRACT

Recent advances in radiotherapy technology and techniques have allowed a highly conformal radiation to be delivered to the tumour target inside the body for cancer treatment. A three-dimensional (3D) dosimetry system is required to verify the accuracy of the complex treatment delivery. A 3D dosimeter based on the radiochromic response of a polymer towards ionising radiation has been introduced as the PRESAGE dosimeter. The polyurethane dosimeter matrix is combined with a leuco-dye and a free radical initiator, whose colour changes in proportion to the radiation dose. In the previous decade, PRESAGE gained improvement and enhancement as a 3D dosimeter. Notably, PRESAGE overcomes the limitations of its predecessors, the Fricke gel and the polymer gel dosimeters, which are challenging to fabricate and read out, sensitive to oxygen, and sensitive to diffusion. This article aims to review the characteristics of the radiochromic dosimeter and its clinical applications. The formulation of PRESAGE shows a delicate balance between the number of radical initiators, metal compounds, and catalysts to achieve stability, optimal sensitivity, and water equivalency. The applications of PRESAGE in advanced radiotherapy treatment verifications are also discussed.

15.
Egypt J Forensic Sci ; 12(1): 22, 2022.
Article in English | MEDLINE | ID: mdl-35573158

ABSTRACT

Introduction: Coronavirus-19 disease (COVID-19) has been declared as pandemic by the World Health Organization (WHO) in March 2020. As of 28 November 2021, there were more than 260 million cases and nearly 5.2 million deaths caused by COVID-19. The most affected system by COVID-19 infection was the respiratory system although several other studies suggested multi-organ involvement with pathophysiology that was not clearly understood. Autopsy findings were beneficial to researchers to determine the mechanism behind these organ failures. The objective of this review was to summarize the autopsy findings related to COVID-19 death. Method: Online literature search was conducted via online databases such as Scopus, PubMed and Google Scholar. The keywords inputted during the search were "post-mortem", "autopsy" and "COVID-19" in title, abstract and keywords. The inclusion criteria were the topic related with the title of this review, published in 2020-2021, have full text available and in English language. Any articles that were not related, duplicated studies, review articles including systematic review and meta-analysis and in other languages were excluded. Results: A total of 20 articles were included in this review. The articles reviewed were mostly case reports and case series while others were case-control and cohort study ranging from one to 348 cases. Majority were originated from the United States of America (USA). Conclusion: The most frequent system described in autopsy findings in COVID-19 death was the respiratory system, with the most common histological finding of diffuse alveolar damage (DAD). Majority of the findings of other organs were related to chronic diseases.

16.
Imaging Sci Dent ; 52(4): 383-391, 2022 Dec.
Article in English | MEDLINE | ID: mdl-36605859

ABSTRACT

Purpose: Periodontitis, the most prevalent chronic inflammatory condition affecting teeth-supporting tissues, is diagnosed and classified through clinical and radiographic examinations. The staging of periodontitis using panoramic radiographs provides information for designing computer-assisted diagnostic systems. Performing image segmentation in periodontitis is required for image processing in diagnostic applications. This study evaluated image segmentation for periodontitis staging based on deep learning approaches. Materials and Methods: Multi-Label U-Net and Mask R-CNN models were compared for image segmentation to detect periodontitis using 100 digital panoramic radiographs. Normal conditions and 4 stages of periodontitis were annotated on these panoramic radiographs. A total of 1100 original and augmented images were then randomly divided into a training (75%) dataset to produce segmentation models and a testing (25%) dataset to determine the evaluation metrics of the segmentation models. Results: The performance of the segmentation models against the radiographic diagnosis of periodontitis conducted by a dentist was described by evaluation metrics (i.e., dice coefficient and intersection-over-union [IoU] score). Multi-Label U-Net achieved a dice coefficient of 0.96 and an IoU score of 0.97. Meanwhile, Mask R-CNN attained a dice coefficient of 0.87 and an IoU score of 0.74. U-Net showed the characteristic of semantic segmentation, and Mask R-CNN performed instance segmentation with accuracy, precision, recall, and F1-score values of 95%, 85.6%, 88.2%, and 86.6%, respectively. Conclusion: Multi-Label U-Net produced superior image segmentation to that of Mask R-CNN. The authors recommend integrating it with other techniques to develop hybrid models for automatic periodontitis detection.

17.
Article in English | WPRIM (Western Pacific) | ID: wpr-966947

ABSTRACT

Purpose@#Periodontitis, the most prevalent chronic inflammatory condition affecting teeth-supporting tissues, is diagnosed and classified through clinical and radiographic examinations. The staging of periodontitis using panoramic radiographs provides information for designing computer-assisted diagnostic systems. Performing image segmentation in periodontitis is required for image processing in diagnostic applications. This study evaluated image segmentation for periodontitis staging based on deep learning approaches. @*Materials and Methods@#Multi-Label U-Net and Mask R-CNN models were compared for image segmentation to detect periodontitis using 100 digital panoramic radiographs. Normal conditions and 4 stages of periodontitis were annotated on these panoramic radiographs. A total of 1100 original and augmented images were then randomly divided into a training (75%) dataset to produce segmentation models and a testing (25%) dataset to determine the evaluation metrics of the segmentation models. @*Results@#The performance of the segmentation models against the radiographic diagnosis of periodontitis conducted by a dentist was described by evaluation metrics (i.e., dice coefficient and intersection-over-union [IoU] score). Multi-Label U-Net achieved a dice coefficient of 0.96 and an IoU score of 0.97. Meanwhile, Mask R-CNN attained a dice coefficient of 0.87 and an IoU score of 0.74. U-Net showed the characteristic of semantic segmentation, and Mask R-CNN performed instance segmentation with accuracy, precision, recall, and F1-score values of 95%, 85.6%, 88.2%, and 86.6%, respectively. @*Conclusion@#Multi-Label U-Net produced superior image segmentation to that of Mask R-CNN. The authors recommend integrating it with other techniques to develop hybrid models for automatic periodontitis detection.

18.
J Food Sci Technol ; 58(9): 3379-3387, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34366455

ABSTRACT

Betacyanin is a red natural dye pigment widely used in food products. However, the pigment is also unstable and easily degraded by temperature during storage and food processing. This research aims to increase the stability of betacyanin obtained from dragon fruit peels using pectin as a wall medium via the coacervation method. Due to the efficiency and shell integrity, the coacervation method was selected instead of spray drying to enhance betacyanin's stability. Coacervation was conducted in a three-necked round-bottomed flask fitted with a mercury-sealed stirrer and reflux condenser. An accelerated stability test was conducted at 80 °C and 100 °C for 30 min and considered completed after obtaining a stable absorbance. Two full factorials, three-level design, for 80 °C and 100 °C, were analyzed by Response Surface Methodology using Minitab® 19. The core/wall ratio, agitation speed, and pH were the continuous variables, with temperature as the categorical variables. The models were yielded high R-square and low coefficient of variance on the validation process. Simple coacervation is selected because of a superior method such as simplicity, low-cost, high efficiency, and high shell integrity.

19.
Molecules ; 26(4)2021 Feb 19.
Article in English | MEDLINE | ID: mdl-33669627

ABSTRACT

Essential oils (EOs) are known to have varying degrees of antimicrobial properties that are mainly due to the presence of bioactive compounds. These include antiviral, nematicidal, antifungal, insecticidal and antioxidant properties. This review highlights the potential of EOs and their compounds for application as antifungal agents for the treatment of skin diseases via conventional and nonconventional approaches. A search was conducted using three databases (Scopus, Web of Science, Google Scholar), and all relevant articles from the period of 2010-2020 that are freely available in English were extracted. In our findings, EOs with a high percentage of monoterpenes showed strong ability as potential antifungal agents. Lavandula sp., Salvia sp., Thymus sp., Citrus sp., and Cymbopogon sp. were among the various species found to show excellent antifungal properties against various skin diseases. Some researchers developed advanced formulations such as gel, semi-solid, and ointment bases to further evaluate the effectiveness of EOs as antifungal agents. To date, most studies on the application of EOs as antifungal agents were performed using in vitro techniques, and only a limited number pursued in vivo and intervention-based research.


Subject(s)
Antifungal Agents/therapeutic use , Dermatomycoses/drug therapy , Oils, Volatile/therapeutic use , Animals , Dermatomycoses/microbiology , Humans , Publications
20.
Molecules ; 26(4)2021 Feb 19.
Article in English | MEDLINE | ID: mdl-33669787

ABSTRACT

Despite the improvements in life expectancy, neurodegenerative conditions have arguably become the most dreaded maladies of older people. The neuroprotective and anti-ageing potentials of essential oils (EOs) are widely evaluated around the globe. The objective of this review is to analyse the effectiveness of EOs as neuroprotective remedies among the four common age-related neurodegenerative diseases. The literature was extracted from three databases (PubMed, Web of Science and Google Scholar) between the years of 2010 to 2020 using the medical subject heading (MeSH) terms "essential oil", crossed with "Alzheimer's disease (AD)", "Huntington's disease (HD)", "Parkinson's disease (PD)" or "amyotrophic lateral sclerosis (ALS)". Eighty three percent (83%) of the studies were focused on AD, while another 12% focused on PD. No classifiable study was recorded on HD or ALS. EO from Salvia officinalis has been recorded as one of the most effective acetylcholinesterase and butyrylcholinesterase inhibitors. However, only Cinnamomum sp. has been assessed for its effectiveness in both AD and PD. Our review provided useful evidence on EOs as potential neuroprotective remedies for age-related neurodegenerative diseases.


Subject(s)
Aging/pathology , Neurodegenerative Diseases/drug therapy , Neuroprotection , Neuroprotective Agents/therapeutic use , Oils, Volatile/therapeutic use , Humans , Publications
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