Browse publications by year: 2023

  1. Lee XH, Nor LM, Ang CS, Yeow TP, Lim SL
    J ASEAN Fed Endocr Soc, 2023;38(1):52-61.
    PMID: 37252406 DOI: 10.15605/jafes.038.01.08
    OBJECTIVES: Type 2 diabetes mellitus (T2DM) is an important risk factor for Non-alcoholic fatty liver disease (NAFLD). It worsens the course of NAFLD. We investigated the prevalence of advanced liver fibrosis among patients with T2DM. Our secondary objectives were to describe patient demographics, to explore associated clinical factors, and to compare FIB-4 Index and liver stiffness measurement (LSM).

    METHODOLOGY: This was a cross-sectional study on 258 patients with T2DM duration of at least 10 years. Transient elastography (FibroScan®) was performed on all subjects. Advanced liver fibrosis was diagnosed based on LSM results. The FIB-4 index formula was used.

    RESULTS: The prevalence of advanced liver fibrosis was 22.1%. Associated factors were body mass index (BMI), alanine transaminase (ALT), aspartate transaminase (AST), gamma-glutamyl transferase (GGT), triglyceride (TG) and high-density lipoprotein (HDL) cholesterol. Independent factors were BMI and GGT (p=0.003 and p<0.001). FIB-4 index has 30.0% sensitivity, 85.0% specificity, 38.7% positive predictive value, and 79.4% negative predictive value in detecting advanced liver fibrosis by LSM criteria.

    CONCLUSION: Our study confirmed the high prevalence of advanced liver fibrosis among patients with long-standing T2DM. This study suggests the benefit of advanced liver fibrosis screening in patients with a minimum of 10 years of T2DM, especially those with high BMI and GGT.

    MeSH terms: Cross-Sectional Studies; gamma-Glutamyltransferase; Humans; Liver Cirrhosis/diagnosis; Malaysia/epidemiology; Prevalence
  2. Evenhuis A, Occhipinti S, Jones L, Wishart D
    Glob Health Action, 2023 Dec 31;16(1):2216068.
    PMID: 37254873 DOI: 10.1080/16549716.2023.2216068
    BACKGROUND: Offering cessation support to health professionals who smoke to ensure optimal implementation of cessation support for patients is a key recommendation of the WHO Framework Convention on Tobacco Control Article 14 guidelines. However, direct efforts to support this population to quit are limited. Although numerous articles on the topic of tobacco use among health professionals have been published, the factors associated with their own cessation have not been systematically synthesised.

    OBJECTIVE: We sought to synthesise existing literature on the predictors and processes informing attitudes and beliefs of smoking health professionals' own cessation.

    METHODS: A five-step methodological framework for scoping reviews was followed. We conducted a systematic search of EMBASE, PubMed, Web of Science, and PsycINFO databases, as well as Google Scholar for relevant articles. Titles, abstracts, and full texts were screened against predefined criteria: research published between 1990 and 2021, in English-language peer-reviewed journals; participants included doctors, nurses, medical, and student nurses who smoke.

    RESULTS: The initial search yielded 120, 883 articles, with 27 selected for synthesis. Prevalence estimates and predictors of smoking behaviour have remained the primary focus of smoking health professional research. Few studies explicitly examined the relevant predictors of quit attempts and quit attempt success. There is evidence that age and work environment factors predict quit attempt success in some health professional groups. There is also some evidence of tobacco smoking stigma experiences among nurses and nursing students who smoke.

    CONCLUSION: Although cessation support is desperately needed for health professionals who smoke, the evidence for factors predicting quit success remains limited. To better guide future research, first, more theoretical work is required to identify the relevant predictors. Second, these should be tested using prospective research designs that take a multi-focal perspective to clarify the targets for change.

    MeSH terms: Health Personnel; Humans; Physicians*; Prospective Studies; Smoking/epidemiology; Smoking Cessation*
  3. Mohd Fauzey NF, Muda SM, Hasan H, Nusee Z, Mustapa Kamal Basha MA
    Arch Ital Urol Androl, 2023 May 29;95(2):11298.
    PMID: 37254928 DOI: 10.4081/aiua.2023.11298
    OBJECTIVES: This study aims to identify knowledge, attitude, and practice of pelvic floor muscle training (PFMT) and to identify the prevalence of urinary incontinence.

    MATERIALS AND METHODS: The method used was a cross-sectional study. Self-administered knowledge, attitude, and practice questionnaires were distributed among childbearing women attending Maternal & Child Health Clinics in the East Coast region of Malaysia.

    RESULTS: The findings revealed that most respondents (N = 896) had good or moderate knowledge (80.1%) and attitudes (77.3%) regarding PFMT but most of them (87.2%) still lacked practice. However, there was no association between urinary incontinence and PFMT practice. On the contrary, married women showed a higher risk of urinary incontinence.

    CONCLUSIONS: The practice of pelvic floor muscle training should be recommended and emphasized to childbearing women by healthcare professionals.

    MeSH terms: Child; Cross-Sectional Studies; Exercise Therapy/methods; Female; Humans; Health Knowledge, Attitudes, Practice; Urinary Incontinence, Stress*; Treatment Outcome; Pelvic Floor
  4. Saleem H, Yaqub A, Rafique R, Ali Chohan T, Malik DE, Tousif MI, et al.
    PMID: 37255100 DOI: 10.1080/10408398.2023.2217264
    Enzymes are biologically active complex protein molecules that catalyze most chemical reactions in living organisms, and their inhibitors accelerate biological processes. This review emphasizes medicinal food plants and their isolated chemicals inhibiting clinically important enzymes in common diseases. A mechanistic overview was investigated to explain the mechanism of these food bases enzyme inhibitors. The enzyme inhibition potential of medicinal food plants and their isolated substances was searched in Ovid, PubMed, Science Direct, Scopus, and Google Scholar. Cholinesterase, amylase, glucosidase, xanthine oxidase, tyrosinase, urease, lipoxygenase, and others were inhibited by crude extracts, solvent fractions, or isolated pure chemicals from medicinal food plants. Several natural compounds have shown tyrosinase inhibition potential, including quercetin, glabridin, phloretin-4-O-β-D-glucopyranoside, lupinalbin, and others. Some of these compounds' inhibitory kinetics and molecular mechanisms are also discussed. Phenolics and flavonoids inhibit enzyme activity best among the secondary metabolites investigated. Several studies showed flavonoids' significant antioxidant and anti-inflammatory activities, highlighting their medicinal potential. Overall, many medicinal food plants, their crude extracts/fractions, and isolated compounds have been studied, and some promising compounds depending on the enzyme have been found. Still, more studies are recommended to derive potential pharmacologically active functional foods.
  5. Al-Ezzi A, Kamel N, Al-Shargabi AA, Al-Shargie F, Al-Shargabi A, Yahya N, et al.
    Front Psychiatry, 2023;14:1155812.
    PMID: 37255678 DOI: 10.3389/fpsyt.2023.1155812
    INTRODUCTION: The early diagnosis and classification of social anxiety disorder (SAD) are crucial clinical support tasks for medical practitioners in designing patient treatment programs to better supervise the progression and development of SAD. This paper proposes an effective method to classify the severity of SAD into different grading (severe, moderate, mild, and control) by using the patterns of brain information flow with their corresponding graphical networks.

    METHODS: We quantified the directed information flow using partial directed coherence (PDC) and the topological networks by graph theory measures at four frequency bands (delta, theta, alpha, and beta). The PDC assesses the causal interactions between neuronal units of the brain network. Besides, the graph theory of the complex network identifies the topological structure of the network. Resting-state electroencephalogram (EEG) data were recorded for 66 patients with different severities of SAD (22 severe, 22 moderate, and 22 mild) and 22 demographically matched healthy controls (HC).

    RESULTS: PDC results have found significant differences between SAD groups and HCs in theta and alpha frequency bands (p < 0.05). Severe and moderate SAD groups have shown greater enhanced information flow than mild and HC groups in all frequency bands. Furthermore, the PDC and graph theory features have been used to discriminate three classes of SAD from HCs using several machine learning classifiers. In comparison to the features obtained by PDC, graph theory network features combined with PDC have achieved maximum classification performance with accuracy (92.78%), sensitivity (95.25%), and specificity (94.12%) using Support Vector Machine (SVM).

    DISCUSSION: Based on the results, it can be concluded that the combination of graph theory features and PDC values may be considered an effective tool for SAD identification. Our outcomes may provide new insights into developing biomarkers for SAD diagnosis based on topological brain networks and machine learning algorithms.

  6. Wong LP, Farid NDN, Alias H, Yusop SM, Musa Z, Hu Z, et al.
    Front Psychiatry, 2023;14:1165023.
    PMID: 37255690 DOI: 10.3389/fpsyt.2023.1165023
    INTRODUCTION: This study aimed to shed light on how young people from low-income families were responding to COVID-19.

    METHODS: This cross-sectional study recruited young people aged between 18 and 24 years from the low-income-group communities. A convenience sampling approach was used. Google Surveys were used to gather data from the survey. The questionnaire consisted of an assessment of demographic characteristics, lifestyle factors, parent-youth conflict (Parental Environment Questionnaire, PEQ), resilient coping (Brief Resilient Coping Scale, BRCS), and psychological distress (Depression, Anxiety, and Stress Scale-short form, DASS-21).

    RESULTS: A total of 561 complete responses were received. The results showed a low level of parent-child conflict in the overall study population, with a median PEQ of 48.0 [interquartile range (IQR) 36-48]. Higher parent-child conflicts were found in females than in males (OR = 1.75, 95% CI 1.19-2.57) and in youth from households with an income below MYR 2000 than those earning MYR 3,001-5,000 (OR = 4.39, 95% CI 2.40-8.03). A low prevalence of depression (12.5%), anxiety (15.2%), and stress (6.4%) was found. Parent-child conflict remains the strongest significant predictor for higher levels of depression (OR = 10.90, 95% CI 4.31-27.57), anxiety (OR = 11.92, 95% CI 5.05-28.14), and stress (OR = 4.79, 95% CI 1.41-16.33) symptoms. Poor resilient coping was the second strongest predictor for depression and anxiety symptoms. Regarding lifestyle factors, a lower level of physical exercise was associated with higher symptoms of depression. By demographics, females reported more severe symptoms of depression and anxiety than males. Young people from low-income households reported greater severity in symptoms of depression, anxiety, and stress than those from high-income households. Young people who are employed also reported greater severity of anxiety symptoms than those who are unemployed.

    DISCUSSION: The COVID-19 pandemic continues to have an unpredictable impact on the lives of vulnerable youth in low-income families that warrants attention in future advocacy efforts.

  7. Bossuyt FM, Bogdanova Y, Kingsley KT, Bergquist TF, Kolakowsky-Hayner SA, Omar ZB, et al.
    Front Rehabil Sci, 2023;4:1173558.
    PMID: 37255738 DOI: 10.3389/fresc.2023.1173558
    The rapidly evolving COVID-19 public health emergency has disrupted and challenged traditional healthcare, rehabilitation services, and treatment delivery worldwide. This perspective paper aimed to unite experiences and perspectives from an international group of rehabilitation providers while reflecting on the lessons learned from the challenges and opportunities raised during the COVID-19 pandemic. We discuss the global appreciation for rehabilitation services and changes in access to healthcare, including virtual, home-based rehabilitation, and long-term care rehabilitation. We illustrate lessons learned by highlighting successful rehabilitation approaches from the US, Belgium, and Japan.
  8. Karkada G, Maiya GA, Arany P, Kg MR, Adiga S, Kamath SU
    J Diabetes Metab Disord, 2023 Jun;22(1):393-400.
    PMID: 37255770 DOI: 10.1007/s40200-022-01157-2
    PURPOSE: Diabetic foot ulcers are reported to be the most expensive complications of diabetes, with high morbidity and mortality rates. If the necessary care is not provided for the wound to heal, the individual may end up amputating the affected feet. Photobiomodulation therapy is a promising non-pharmacological treatment option for wound healing. The objective of the present study is to establish a dose-response relationship between photobiomodulation therapy and oxidative stress markers in the healing dynamics of diabetic neuropathic ulcers in Wistar rats.

    METHODOLOGY: Diabetic neuropathy was induced in 126 Albino Wistar rats. An excisional wound of an area of 2cm2 was made on the neuropathy-induced leg. Photobiomodulation therapy of dosages 4, 6, 8, 10, 12, and 15 J/cm2 of wavelengths 655 and 808 nm was irradiated. The control group animals were kept un-irradiated. The outcome measures were assessed during wound healing's inflammatory, proliferative and remodelling phases.

    RESULTS: In the experimental group, animals treated with photobiomodulation therapy at doses of 4, 6, and 8 J/cm2 showed better wound healing dynamics. Photobiomodulation therapy modulated the reactive oxygen species and antioxidant levels, thereby improving the oxidative status of the wound.

    CONCLUSION: Photobiomodulation therapy of dosages 4, 6, and 8 J/cm2 is effective and is a promising adjuvant modality in treating diabetic neuropathic ulcers. There was a strong dose-response relationship in the experimental groups treated with 4, 6 and 8 J/ cm2.

    SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40200-022-01157-2.

  9. Zain SM, Pung YF, Mohamed R
    J Diabetes Metab Disord, 2023 Jun;22(1):237-243.
    PMID: 37255815 DOI: 10.1007/s40200-022-01119-8
    BACKGROUND: Elevated circulating vaspin levels is linked with type 2 diabetes mellitus (T2DM) and obesity. The genetic basis of the association between vaspin rs2236242 and T2DM and obesity is still being investigated. We executed a meta-analysis to evaluate the magnitude of effect caused by vaspin rs2236242 on T2DM and obesity.

    METHODS: We searched Pubmed, Embase, MEDLINE, Scopus, Web of Science, and Google Scholar for relevant articles published up to 19 February 2022. Data were extracted and summary estimates of the association between vaspin rs2236242 and T2DM and obesity were assessed. Odds ratios (ORs) and confidence intervals (CIs) were used to measure the effect.

    RESULTS: This meta-analysis included 2206 cases and 2715 controls in the T2DM cohort, meanwhile 271 cases and 444 controls in the obesity cohort. The pooled estimates revealed no link between vaspin rs2236242 and T2DM, but allele-A was significantly higher in the controls of the obesity cohort, showing that this single nucleotide polymorphism (SNP) has a reduced obesity risk effect. Sensitivity analysis revealed no studies that would modify the estimates or the heterogeneity. Begg and Mazumdar's and Egger's tests indicated no substantial publication bias.

    CONCLUSION: Our meta-analysis provides evidence of significant association between vaspin rs2236242 and reduced risk of obesity but not T2DM.

    SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40200-022-01119-8.

  10. Chu LI, Berahim Z, Mohamad S, Shahidan WNS, Yhaya MF, Zainuddin SLA
    Cureus, 2023 Apr;15(4):e38297.
    PMID: 37255896 DOI: 10.7759/cureus.38297
    Honey has been widely used for medicinal purposes since ancient times. It is produced by stinging bees or stingless bees by processing the collected nectar or plant sap in their bodies into raw honey. Extraction of honey will result in the pooling of crude volatile bioactive materials that could enhance its benefits. This work aims to compare the phytochemical characteristics of raw and methanol-extracted honeys in the Kelulut, Tualang and Manuka honeys. All types of raw honey samples were extracted by using the methanol extraction method and both groups were analysed using gas chromatography/mass spectrometry (GC/MS) at the National Poison Centre, Universiti Sains Malaysia, Malaysia. The findings showed that 23 compounds were identified in raw Kelulut honey and 18 compounds in methanol-extracted Kelulut honey; 28 compounds were identified in raw Tualang honey and 29 compounds in methanol-extracted Tualang honey; 19 compounds in raw Manuka honey and 22 compounds in methanol-extracted Manuka honey. There were differences in the phytochemical substances detected in raw and methanol-extracted honeys. The major compounds in raw honeys were mostly from the ketone, alcohol, and ester groups, whereas the ketone group was dominant in methanol-extracted honeys. Most bioactive substances identified in the methanol-extracted variant of honeys were more concentrated than the raw variant. A majority of these substances have antimicrobial characteristics.
  11. Rajendran T, Azman M
    Cureus, 2023 Apr;15(4):e38293.
    PMID: 37255907 DOI: 10.7759/cureus.38293
    Subglottic hemangiomas are rare in adulthood. The presence of the lesion in the subglottic region makes it even more unusual. Moreover, these lesions do not have a typical course and involution changes as seen in the infantile forms. An elderly female initially came with a brief history of dyspnea and symptoms of upper respiratory tract infection. The patient also complained of a change of voice and noisy breathing, with a recent history of intubation following COVID-19 pneumonia and late-onset bronchial asthma. Flexible nasopharyngolaryngoscopy showed a mass below the vocal folds, which was seen to arise from the posterior subglottic region. The patient eventually underwent endoscopic excision of the lesion under general anesthesia and recovered well. Symptoms of hoarseness and stridor, along with a history of intubation, should raise a high index of suspicion for laryngeal diseases. A delay in the diagnosis of an obstructing lesion in the subglottis occurs in the presence of a confounding lung infection and overlap of clinical features with those of bronchial asthma. Surgical excision is required not only to alleviate obstructive symptoms but also to rule out malignancy.
  12. Yang J, Yee PL, Khan AA, Karamti H, Eldin ET, Aldweesh A, et al.
    Digit Health, 2023;9:20552076231172632.
    PMID: 37256015 DOI: 10.1177/20552076231172632
    Lung cancer is the second foremost cause of cancer due to which millions of deaths occur worldwide. Developing automated tools is still a challenging task to improve the prediction. This study is specifically conducted for detailed posterior probabilities analysis to unfold the network associations among the gray-level co-occurrence matrix (GLCM) features. We then ranked the features based on t-test. The Cluster Prominence is selected as target node. The association and arc analysis were determined based on mutual information. The occurrence and reliability of selected cluster states were computed. The Cluster Prominence at state ≤330.85 yielded ROC index of 100%, relative Gini index of 99.98%, and relative Gini index of 100%. The proposed method further unfolds the dynamics and to detailed analysis of computed features based on GLCM features for better understanding of the hidden dynamics for proper diagnosis and prognosis of lung cancer.
  13. Tsuyuki A, Oya Y, Jimi N, Hookabe N, Fujimoto S, Kajihara H
    Zoolog Sci, 2023 Jun;40(3):262-272.
    PMID: 37256573 DOI: 10.2108/zs220105
    We establish a new interstitial polyclad species, Theama japonica sp. nov., based on specimens collected from coarse-sandy habitats in three Japanese main islands (Hokkaido, Honshu, and Shikoku) along the coasts of the Pacific Ocean and the Sea of Japan. Theama japonica is characterized by i) two pairs of cerebral eyespots and four to six precerebral eyespots; ii) eosinophilic secretion glands distributed in the distal half of the inner ventral part of the prostatic vesicle; iii) a conical penis papilla, bent up dorsally, with a sclerotized inner wall; iv) the prostatic sheath with an inner angular fold on the dorso-distal side; and v) the external cilia longer dorsally than ventrally. Partial sequences of the cytochrome c oxidase subunit I (COI) gene from 20 specimens collected at eight localities along Japanese coasts represented 19 haplotypes. The uncorrected p-distances among these COI haplotypes fell within intraspecific variations observed in other polyclads. A network analysis based on these COI haplotypes suggested a geographically non-cohesive genetic structure of the species, possibly indicating the species' high dispersibility. Molecular phylogenetic analyses based on a concatenated dataset of 18S and 28S rDNA sequences showed T. japonica formed a clade with other Theama species. The resulting tree also indicates that our new species is more closely related to Theama sp. from Colombia than species from Panama and Croatia.
    MeSH terms: Animals; DNA, Ribosomal; Japan; Male; Phylogeny; Platyhelminths*
  14. Gunasagaran J, Ab Wahab N, Khoo SS, Shamsul SA, Shivdas S, Hashim S, et al.
    J Orthop Surg (Hong Kong), 2023;31(2):10225536231180330.
    PMID: 37256763 DOI: 10.1177/10225536231180330
    BACKGROUND: In complete brachial plexus injury, phrenic nerve (PN) is frequently used in neurotization for elbow flexion restoration. The advancement in video-assisted thoracoscopic surgery (VATS) allows full-length PN dissection intrathoracically for direct coaptation to recipient without nerve graft.

    PURPOSE: We report our experience in improving the surgical technique and its outcome.

    METHODS: Seven patients underwent PN dissection via VATS and full-length transfer to musculocutaneous nerve (MCN) or motor branch of biceps (MBB) from June 2015 to June 2018. Comparisons were made with similar group of patients who underwent conventional PN transfer.

    RESULTS: Mean age of patients was 21.9 years. All were males involved in motorcycle accidents who sustained complete brachial plexus injury. We found the elbow flexion recovery were earlier in full-length PN transfer. However, there was no statistically significant difference in elbow flexion strength at 3 years post-surgery.

    CONCLUSION: We propose full-length PN transfer for restoration of elbow flexion in patients with delayed presentation.

    MeSH terms: Adolescent; Humans; Male; Prospective Studies; Treatment Outcome; Thoracic Surgery, Video-Assisted*; Young Adult
  15. Lin X, Mamun AA, Yang Q, Masukujjaman M
    PLoS One, 2023;18(5):e0286382.
    PMID: 37256860 DOI: 10.1371/journal.pone.0286382
    For logistics service providers (LSPs), improving customer satisfaction and obtaining customer re-use intention are key to gaining sustainable competitive advantages and success. Logistics service quality (LSQ) is a concern for logistics service providers, retailers, and customers. The proposed model, which is based on the stimuli-organism-response theory and the logistics service quality framework, integrates operational quality, resource quality, information quality, personal contact quality, customization quality, and customer satisfaction to study logistics service re-use intentions. The data were obtained from an online survey using a structured questionnaire given to those with experience in logistics service. Using partial least squares structural equation modeling on 810 respondents who were adult Chinese customers, this study discovered that operational, resource, information, personal contact, and customization qualities positively affect the satisfaction of logistics service customers, while customer satisfaction positively affects re-use intention. Moreover, the results of the mediation analysis revealed that customer satisfaction mediated the connection between the five components of LSQ and the re-use intention of logistics services. The originality of the study lies in its comprehensive examination of the direct and indirect effects of service quality dimensions on customer satisfaction and logistics service re-use intention in the context of logistics services. This study provides valuable insights into the importance of customer satisfaction in the logistics industry and highlights the need for logistics companies to prioritize customer satisfaction and improve their overall performance and competitiveness.
    MeSH terms: Consumer Behavior*; Personal Satisfaction; Surveys and Questionnaires; Patient Satisfaction; Intention*
  16. Chen YZ, Yong MJ, Tan VY, Kong SLS, Elnawawy HMA, Yahya NA, et al.
    Eur Endod J, 2023 May;8(3):215-224.
    PMID: 37257037 DOI: 10.14744/eej.2023.36449
    OBJECTIVE: This study compared the effects of calcium chloride dihydrate (CaCl2.2H2O) on the physical properties and push-out bond strength of white Mineral Trioxide Aggregate (WMTA) and an experimental Malaysian Portland cement mixed with nano-zirconium oxide (nano-ZrO) [(radiopaque Malaysian Portland cement (RMPC). Mineral Trioxide Aggregate (MTA) was the first calcium silicate cement (CSC) introduced in dentistry, but up to date, it is an expensive cement with long setting time and causes tooth discolouration. Although Portland cement has been introduced as a potential substitute to MTA, it still faces some challenges such as long setting time and lack of sufficient radiopacity.

    METHODS: Four groups [WMTA, RMPC, fast-set WMTA (FS-WMTA) and fast-set RMPC (FS-RMPC)] were prepared. Initial setting time was evaluated using Vicat apparatus. The pH was measured at seven-day intervals. For discolouration potential, cements were packed in the pulp chamber of 46 extracted maxillary incisors. Spectrophotometric readings were obtained at seven-day intervals, and the rate of colour change (ΔE) was recorded. For the push-out bond strength testing, cements were applied in 48 sectioned root samples, and the test was performed using universal testing machine at crosshead speed of 0.5 mm/min until bond failure. Statistical analysis was done according to the nature of each group of data using SPSS 26.

    RESULTS: Addition of CaCl2.2H2O decreased the initial setting times of both RMPC and WMTA significantly (p<0.05). The pH values of FS-WMTA and FS-RMPC were comparable to their non-accelerated counterparts ranging from 10 to 12. Discolouration effect was more obviously observed with WMTA and FS-WMTA with time compared to RMPC formulations. Push-out bond strength of the two materials also showed an increase with the addition of the accelerator, however, only FS-WMTA showed statistically significant difference compared to WMTA (p<0.05).

    CONCLUSION: The addition of CaCl2.2H2O improves the physical and mechanical properties of the newly formulated RMPC and WMTA. The RMPC formulation overcomes the discolouration potential of WMTA. (EEJ-2022-12-155).

    MeSH terms: Calcium Chloride; Oxides*; Silicate Cement; Physical Phenomena
  17. Bradley DA, Essa RZ, Peh SC, Teow SY, Chew MT, Zubair HT, et al.
    Appl Radiat Isot, 2023 Aug;198:110875.
    PMID: 37257265 DOI: 10.1016/j.apradiso.2023.110875
    Review is provided of a number of low-dose, low dose rate situations that in study require advances in the development of dosimetric facilities. Using a clinical linac set up to provide doses down to the few mGy level, the performance of a real-time radioluminescence system has then been illustrated, accommodating pulsed as well as continuous dose delivery. The system gate times provide for tracking of the pattern of dose delivery, allowing detailed account of dose and dose-rate variations. The system has been tested in both x-ray and electron mode dose delivery.
    MeSH terms: Radiography; Radiotherapy Dosage; X-Rays
  18. Duman B, Erkmen C, Zahirul Kabir M, Ching Yi L, Mohamad SB, Uslu B
    PMID: 37257323 DOI: 10.1016/j.saa.2023.122907
    Binding mechanisms of two selected pesticides, propazine (PRO) and quinoxyfen (QUI) with bovine serum albumin (BSA) was examined using fluorescence, absorption and molecular docking methods. Intrinsic fluorescence of BSA was quenched in the presence of both PRO and QUI. The quenching was ascertained to be conversely linked to temperature, which suggested the contribution of static quenching process in the PRO-BSA and QUI-BSA complex formations. This results were validated by the enhancement in absorption spectrum of BSA upon binding with PRO and QUI. Binding constant values (Kf = 9.55-0.60 × 10-3 M-1 for PRO-BSA system; Kf = 7.08-5.01 × 102 M-1 for QUI-BSA system) and number of binding site (n) values for the PRO-BSA and QUI-BSA systems at different temperatures affirmed a weak binding strength with a set of equivalent binding sites on BSA. Thermodynamic data obtained for both the PRO-BSA and QUI-BSA interactions predicted that the association process was spontaneous and non-covalent contacts such as hydrophobic interactions, van der Waals forces and hydrogen bonds participated in the binding reactions. This result was further supported by the molecular docking assessments. Three-dimensional spectral results revealed the microenvironmental alterations near tryptophan (Trp) and tyrosine (Tyr) residues in BSA by the addition of PRO and QUI. The docking analysis demonstrated the binding pattern for the PRO-BSA and QUI-BSA systems and disclosed the preferred binding site of both PRO and QUI as site I (subdomain IIA) of BSA.
    MeSH terms: Binding Sites; Circular Dichroism; Protein Binding; Spectrometry, Fluorescence; Spectrophotometry, Ultraviolet; Thermodynamics; Molecular Docking Simulation
  19. Ghorbani M, Kianmehr MH, Sarlaki E, Angelidaki I, Yang Y, Tabatabaei M, et al.
    Sci Total Environ, 2023 Sep 20;892:164526.
    PMID: 37257609 DOI: 10.1016/j.scitotenv.2023.164526
    The livestock industry needs to use crop straws that are highly digestible to improve feed productivity and reduce ruminal methane emissions. Hence, this study aimed to use the ozonation and pelleting processes to enhance the digestibility and reduce the ruminal methane emissions of wheat straw enriched with two nitrogen sources (i.e., urea and heat-processed broiler litter). Various analyses were conducted on the pellets, including digestibility indicators, mechanical properties, surface chemistry functionalization, chemical-spectral-structural features, and energy requirements. For comparison, loose forms of the samples were also analyzed. The nitrogen-enriched ozonated wheat straw pellets had 43.06 % lower lignin, 28.30 % higher gas production for 24 h, 12.28 % higher metabolizable energy, 13.78 % higher in vitro organic matter digestibility for 24 h, and 28.81 % higher short-chain fatty acid content than the nitrogen-enriched loose sample. The reduction of methane emissions by rumen microorganisms of nitrogen-enriched wheat straw by ozonation, pelleting, and ozonation-pelleting totaled 89.15 %, 23.35 %, and 66.98 %, respectively. The ozonation process resulted in a 64 % increase in the particle density, a 5.5-time increase in the tensile strength, and a 75 % increase in the crushing energy of nitrogen-enriched wheat straw. In addition, ozone treatment could also reduce the specific and thermal energy consumption required in the pelleting process by 15.10 % and 7.61 %, respectively.
    MeSH terms: Animals; Chickens; Diet; Digestion; Fermentation; Manure; Methane/metabolism; Nitrogen/analysis; Rumen
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