Motivators and barriers of circular economy business model adoption and its impact on sustainable production in Malaysia.

The circular economy concept is popular among developed countries contributing to sustainable production, efficient resource utilization, a new economic model, and higher skill job creation. In production and consumption, it is inevitable in our modern life that we are used to the traditional linear economy cradle-to-cradle model. With the gap in developing countries within the Southeast Asia region, this research aims to understand the motivators and barriers to circular economy business model adoption among the manufacturing firms in Malaysia. Subsequently, the impact of sustainable production will be studied based on the circular economy business model adoption. Using the Theory of Planned Behavior and Partial Least Squares Structural Equation Modeling, this study assesses the responses of 102 respondents from various industries with environmental management systems within Malaysia. Survey-based primary data was gathered to understand motivators and barriers that negatively influence the circular economy business adoption, affecting sustainable production. The findings show that motivators have a positive impact while barriers have a negative impact on circular economy business model adoption. Apart from the barriers and motivators, the research also assesses the level of circular economy adoption among manufacturing firms with certified environmental management systems. This implies a general overview for manufacturing firms in Malaysia regarding circular economy adoption and contributes to the studies done in developing nations. In conclusion, motivators positively impact the adoption of the circular economy business model, while barriers have a negative effect. In addition, adopting the circular economy model has a positive relationship with sustainable production.

Transverse Colostomy Differs in Outcomes Compared to Sigmoid Colostomy: A Cohort Analysis.

PURPOSE: Our aim was to identify any differences in outcomes following transverse versus sigmoid colostomy creation for management of cancer. METHODS: Transverse and sigmoid colostomies are used to manage cancer-related complications including obstruction, perforation, and fistulation. The decision to use either colostomy is largely based on the surgeon's preference and the location of the cancer complication. All patients treated for cancer complications with the use of a sigmoid or transverse colostomy at National University Hospital between January 2011 and December 2016 were included. Patient characteristics and distribution frequencies were reported based on the operation performed. Post procedure morbidity and mortality was compared. Univariate and subgroup analysis were performed. RESULTS: This was a single-center, retrospective cohort study of 93 patients who underwent a colostomy creation over a 5-year duration. Of the 93 patients included, 56 underwent a transverse colostomy (median age 59, 26 male, 30 female) and 37 a sigmoid colostomy (median age 64, 20 male, 17 female). According to univariate analysis, higher rates of stoma prolapse were seen patients with transverse colostomies. There were no differences in complications between a laparoscopic or open approach. There were no differences in the rate of other postoperative complications. CONCLUSION: Sigmoid colostomies were associated with a lower prolapse rate compared to transverse colostomies for cancer management. The manner of surgical approach did not affect rate of postoperative complications.

Prevalence and Types of Mucocutaneous Disorders, Their Correlation to CD4 Count and Their Impact on Quality of Life in Adults with HIV Infection

Background@#Data on prevalence and type of mucocutaneous diseases in HIV-positive patients and their impact on quality of life (QoL) are sparse. We aim to determine prevalence and type of mucocutaneous disorders, their correlation to CD4+ counts and impact on QoL for adults with HIV, using the Dermatology Life Quality Index (DLQI).@*Methods@#A cross-sectional study of HIV-infected adults seen in HIV and Dermatology Clinic.@*Results@#The majority (90%) of 174 participants recruited was male. Median age at diagnosis of HIV infection was 29 years (IQR 10). Mucocutaneous disorders were present in 90.2%, out of which 58.6% had two or more mucocutaneous disorders. Mean CD4+ count was significantly lower in patients with, compared to those without mucocutaneous disorders (363 vs 548 cells/µL; p=0.030). Infections accounted for 67.2% of all mucocutaneous disorders seen, followed by inflammatory dermatoses (51.7%), cutaneous adverse drug reactions (17.8%) and neoplasm (2.3%). The five most frequent manifestations were eczema (22.4%), anogenital warts (21.2%), candidiasis (16.7%), dermatophytosis (15.5%) and secondary syphilis (12.0%). Oral candidiasis, pruritic papular eruption, drug-induced maculopapular eruption and drug rash with eosinophilia and systemic symptoms were significantly more prevalent in patients with CD4+ counts <200 cells/µL but anogenital warts were more prevalent in patients with CD4+ counts ≥200 cells/µL. The mean DLQI score was 8.39 (SD ± 6.83). QoL was severely impaired (DLQI >10) in 34.4%.@*Conclusion@#Mucocutaneous disorders were common in HIV patients causing significant impairment in quality of life. Prevalence co-related with low CD4+ counts. Adequate management of HIV may reduce the prevalence of mucocutaneous disorders and improve QoL.

A retrospective review of trampoline-related injuries presenting to a paediatric emergency department in Singapore

INTRODUCTION@#Trampolining is a popular activity. However, to our knowledge, no studies on paediatric trampoline-related injuries (TRIs) have been conducted in Asia. We aimed to provide an Asian perspective on paediatric TRIs and evaluate current safety measures.@*METHODS@#Patients aged under 16 years who presented to the emergency department at KK Women's and Children's Hospital, Singapore, from March 2012 to June 2016 with a TRI were identified from the National Trauma Registry. Data was collated retrospectively focusing on age, location of the trampoline, mechanism and location of injury, treatment, disposition, and follow-up treatment.@*RESULTS@#137 children were seen for a TRI during this period. There was even representation across age groups (< 6 years, 6-11 years and 11-16 years). 60.6% of these injuries occurred in a public trampoline park, and a smaller proportion involved home and school trampolines. 61.3% of injuries occurred on the trampoline and 25.5% involved a fall off it, while the remaining were incurred by hitting the trampoline frame. The most common injury was soft tissue injury, followed by fractures and dislocations, of which 16.7% required surgical intervention. Most patients were discharged to an outpatient clinic. 14.6% of all patients required admission and 9.5% eventually required surgical intervention. There were three stable head injuries and no cervical spine injuries or deaths.@*CONCLUSION@#The existence of trampoline parks has contributed to a rise in TRIs. We recommend measures such as general education, changes in the setup around the trampoline, increasing the age limit for trampolining, adult supervision and discouraging double bouncing.

Flavivirus serocomplex cross-reactive immunity is protective by activating heterologous memory CD4 T cells.

How previous immunity influences immune memory recall and protection against related flaviviruses is largely unknown, yet encounter with multiple flaviviruses in a lifetime is increasingly likely. Using sequential challenges with dengue virus (DENV), yellow fever virus (YFV), and Japanese encephalitis virus (JEV), we induced cross-reactive cellular and humoral immunity among flaviviruses from differing serocomplexes. Antibodies against JEV enhanced DENV replication; however, JEV immunity was protective in vivo during secondary DENV1 infection, promoting rapid gains in antibody avidity. Mechanistically, JEV immunity activated dendritic cells and effector memory T cells, which developed a T follicular helper cell phenotype in draining lymph nodes upon secondary DENV1 infection. We identified cross-reactive epitopes that promote recall from a pool of flavivirus serocomplex cross-reactive memory CD4 T cells and confirmed that a similar serocomplex cross-reactive immunity occurs in humans. These results show that sequential immunizations for flaviviruses sharing CD4 epitopes should promote protection during a subsequent heterologous infection.

Factors Associated with Resolution of Hypertension after Adrenalectomy in Patients with Primary Aldosteronism

BACKGROUND: The aim of this study was to investigate the factors associated with resolution of hypertension after adrenalectomy in patients with primary aldosteronism. A secondary aim was to describe our use of the contralateral ratio in adrenal venous sampling (AVS) in the setting of suboptimal successful cannulation rates. METHODS: A retrospective review of patients who underwent AVS followed by unilateral adrenalectomy for primary aldosteronism was performed. RESULTS: Complete resolution of hypertension and hypokalemia was seen in 17 of 40 patients (42.5%), while a clinical improvement in hypertension was seen in 38 of 40 (95%). Shorter duration of hypertension, mean aldosteronoma resolution score (ARS), and a high ARS of 3 to 5 were associated with resolution of hypertension after adrenalectomy (P=0.02, P=0.02, and P=0.004, respectively). Of the individual components of ARS, only a duration of hypertension of ≤6 years was associated with resolution of hypertension after adrenalectomy (P=0.03). CONCLUSION: A shorter duration of hypertension was significantly associated with resolution of hypertension after adrenalectomy in patients with primary aldosteronism.

Effect of position-specific single-point mutations and biophysical characterization of amyloidogenic peptide fragments identified from lattice corneal dystrophy patients.

Corneal stromal dystrophies are a group of genetic disorders that may be caused by mutations in the transforming growth factor ß-induced (TGFBI) gene which results in the aggregation and deposition of mutant proteins in various layers of the cornea. The type of amino acid substitution dictates the age of onset, anatomical location of the deposits, morphological features of deposits (amyloid, amorphous powder or a mixture of both forms) and the severity of disease presentation. It has been suggested that abnormal turnover and aberrant proteolytic processing of the mutant proteins result in the accumulation of insoluble protein deposits. Using mass spectrometry, we identified increased abundance of a 32 amino acid-long peptide in the 4th fasciclin-like domain-1 (FAS-1) domain of transforming growth factor ß-induced protein (amino acid 611-642) in the amyloid deposits of the patients with lattice corneal dystrophies (LCD). In vitro studies demonstrated that the peptide readily formed amyloid fibrils under physiological conditions. Clinically relevant substitution (M619K, N622K, N622H, G623R and H626R) of the truncated peptide resulted in profound changes in the kinetics of amyloid formation, thermal stability of the amyloid fibrils and cytotoxicity of fibrillar aggregates, depending on the position and the type of the amino acid substitution. The results suggest that reduction in the overall net charge, nature and position of cationic residue substitution determines the amyloid aggregation propensity and thermal stability of amyloid fibrils.

The use of general anesthesia to facilitate dental treatment in adult patients with special needs

General anesthesia is commonly used to facilitate dental treatment in patients with anxiety or challenging behavior, many of whom are children or patients with special needs. When performing procedures under general anesthesia, dental surgeons must perform a thorough pre-operative assessment, as well as ensure that the patients are aware of the potential risks and that informed consent has been obtained. Such precautions ensure optimal patient management and reduce the frequency of morbidities associated with this form of sedation. Most guidelines address the management of pediatric patients under general anesthesia. However, little has been published regarding this method in patients with special needs. This article constitutes a review of the current literature regarding management of patients with special needs under general anesthesia.

Hypertension management and lifestyle changes following screening for hypertension in an Asian low socioeconomic status community: a prospective study

<p><b>INTRODUCTION</b>This study investigated the effect of an access-enhanced intervention on hypertension screening and management, as well as on health behaviours among newly diagnosed hypertensives, in a multi-ethnic low socioeconomic status (SES) community. Factors associated with hypertension screening, treatment, and control in the community were also determined.</p><p><b>MATERIALS AND METHODS</b>The study involved all residents aged ≥40 years in 2 public rental housing precincts (low SES), between 2009 and 2011, who were followed-up prospectively for 1 year after a 6-month community-based intervention comprising a 3-month access-enhanced screening component and a 3-month follow-up (outreach) component. Blood pressure was measured at baseline and follow-up. Multivariate Cox regression determined predictors of hypertension management at follow-up.</p><p><b>RESULTS</b>The follow-up rate was 80.9% (467/577). At baseline, 60.4% (282/467) were hypertensive; 53.5% (151/282) were untreated; 54.2% (71/131) uncontrolled. One year later, postintervention, 51.6% (78/151) of untreated hypertensives were treated; combined with treated hypertensives previously uncontrolled, 53.0% (79/149) achieved control. Older age independently predicted treatment (adjusted relative risk, aRR = 1.98, CI, 1.08 to 3.65); majority ethnicity (aRR = 1.76, CI, 1.05 to 2.96), employment (aRR = 1.85, CI, 1.26 to 2.80) and newly treated hypertension (aRR=1.52, CI, 1.01 to 2.32) predicted control. A total of 52.4% (97/185) were irregularly screened at baseline; at follow-up 61.9% (60/97) were regularly screened. Cost and misperceptions were common barriers to screening and treatment. Newly diagnosed hypertensives were also less likely to go for additional cardiovascular screening (aRR = 0.54, CI, 0.29 to 0.99).</p><p><b>CONCLUSION</b>An access-enhanced intervention had some success in improving hypertension management within low SES communities; however, it was less successful in improving cardiovascular risk management, especially in encouraging lifestyle changes and additional cardiovascular screening amongst newly diagnosed hypertensives.</p>

Expression, purification and characterization of fourth FAS1 domain of TGFßIp-associated corneal dystrophic mutants.

Corneal dystrophies (CDs) are a group of inherited bilateral disorders affecting the corneal tissue of the eye. Most of these CDs in the stromal layer of the cornea have been associated with mutations found on the TGFBI gene that codes for a 683-amino acid transforming growth factor induced protein (TGFßIp). These mutations have been found to induce atypical aggregation and progressive accumulation of protein aggregates in the cornea that leads to loss of corneal transparency and hence blindness. At present, 65 distinct pathogenic mutations have been identified in TGFBI that are associated with different clinical phenotypes. More than 80% of these missense mutations occur in the 4th FAS (fasciclin-like) 1 domain. Current treatment includes surgical intervention, which often involves high recurrence rates. Hence, it is imperative to examine the properties of the TGFßIp and the pathogenic mutant proteins to understand the pathology of the disease mechanism and to develop potent therapeutics. Here, we report the recombinant expression, purification, characterization and the effect of four clinically significant pathogenic TGFßIp mutants - R555W, H572R, A620D, and H626R on the biophysical properties of the wild type (WT) 4th FAS1 domain of TGFßIp. While a higher proportion of the R555W, H572R and H626R mutants of the 4th FAS1 domains remained stable, the A620D mutant largely existed as inclusion bodies in native state and aggregates under physiological conditions. These mutants present a unique platform to examine protein aggregation-prone diseases wherein single amino-acid mutations present distinct pathogenic phenotypes. Though pathogenically and phenotypically diverse, these mutants do not exhibit variations in secondary structure and stability, except for the A620D mutant, when examined by CD and UV spectroscopy.