Legacy effect of short-term alirocumab in familial hypercholesterolaemia: A case report

Homozygous familial hypercholesterolaemia (FH) is a rare genetic disorder with aberrantly high level of low-density lipoprotein cholesterol (LDL-C) requiring multiple combined aggressive lipidlowering therapy to reduce the progression of atherosclerotic cardiovascular disease. Alirocumab, a proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK9i) has been approved for treatment of FH, which requires further lowering of LDL-C in addition to diet modification and maximally tolerated statin therapy. We report the response of short-term alirocumab treatment on a young patient with clinically and genetically confirmed FH, who suffered from acute coronary syndrome, and in particular, discussed the hypothesised legacy effect of PCSK9i. The patient was initially treated with a combination of high-intensity statin and ezetimibe for 12 weeks. Subsequently, alirocumab was added to the patient's lipid-lowering regime and he managed to attain guideline recommended LDL-C target within 10 weeks. However, alirocumab was stopped at week 54 due to financial constraint. Interestingly, despite cessation of PCSK9i therapy for a period of 30 weeks, the patient's LDL-C level rose slightly not returning to his baseline level.

Knowledge and attitudes amongst internal medicine clinicians in referring valvular heart disease patients : a multi-centre survey study

Funding Acknowledgements

Type of funding sources: None.

Background

With advancement in valvular interventions, outcomes of valvular heart disease (VHD) patients have improved dramatically. However, very little is known regarding levels of knowledge and attitudes amongst non-cardiology clinicians in managing VHD. 

Purpose

To determine the knowledge and attitudes towards VHD management, pertaining specifically to referrals to cardiology services for consideration for intervention, amongst internal medicine clinicians in Malaysia.

Methods

We conducted a multi-centre survey study. A 20-item survey was distributed amongst internal medicine clinicians within three different institutions.

Results

A total of 75 responses was obtained (response rate of 35.7%). The mean age of responders was 36.6 years (S.D. 7.9). 57.3% were male. Respondents include medical officers (50.6%), internal medicine consultants (31.9%) and internal medicine specialist (i.e. pre-consultant) (17.5%). Majority had more than 10 years of experience working as medical doctors (46.7%). 69.3% admit to managing patients with VHD regularly (defined as at least one VHD patient per week). Respondents were comfortable using online resources, both formal (95.0%) and informal (75.0%) sources. A large proportion felt that they had ‘insufficient’ or ‘very insufficient’ knowledge and experience managing VHD patients on their own (28.0% and 8.0% respectively) and less than half felt that management of VHD patients within their institutions was ‘adequate’ or ‘very adequate’ (46.7% and 2.7% respectively). However, it is reassuring that most respondents felt comfortable discussing cases of VHD with their senior colleagues or their local cardiology services. Although many were felt to be over-zealous in wanting too frequent an echocardiography monitoring for cases of mild VHD (majority felt that the patient would require it every 1 year (25.3%) or 1-2 years (29.3%)), nevertheless attitudes in referrals to cardiology services for consult and intervention were felt appropriate (majority felt that cardiology consult would be indicated if valvular lesion was at least moderate in severity (56.0%), when there were changes to the heart function or structure (52.0%), when patients became symptomatic (45.3%) or when there were two or more valvular lesions simultaneously (45.3%). However, within a Malaysian context, there may be a need to shift attitudes towards referring much earlier, consistent with changes in recent international guidelines on managing VHD, as valvular surgery waiting times are extremely long.

Conclusion

The survey highlights the need for education amongst internal medicine clinician to tackle both the over-zealous attitude in monitoring patients with mild valvular disease on one extreme,  and in improving early referrals for VHD indicated for intervention in the other. Abstract Figure. Survey items on echocardiography  Abstract Figure. Survey items on cardiology referrals

Knowledge and attitudes amongst internal medicine clinicians in referring valvular heart disease patients : a multi-centre survey study

Funding Acknowledgements

Type of funding sources: None.

Background

With advancement in valvular interventions, outcomes of valvular heart disease (VHD) patients have improved dramatically. However, very little is known regarding levels of knowledge and attitudes amongst non-cardiology clinicians in managing VHD. 

Purpose

To determine the knowledge and attitudes towards VHD management, pertaining specifically to referrals to cardiology services for consideration for intervention, amongst internal medicine clinicians in Malaysia.

Methods

We conducted a multi-centre survey study. A 20-item survey was distributed amongst internal medicine clinicians within three different institutions.

Results

A total of 75 responses was obtained (response rate of 35.7%). The mean age of responders was 36.6 years (S.D. 7.9). 57.3% were male. Respondents include medical officers (50.6%), internal medicine consultants (31.9%) and internal medicine specialist (i.e. pre-consultant) (17.5%). Majority had more than 10 years of experience working as medical doctors (46.7%). 69.3% admit to managing patients with VHD regularly (defined as at least one VHD patient per week). Respondents were comfortable using online resources, both formal (95.0%) and informal (75.0%) sources. A large proportion felt that they had ‘insufficient’ or ‘very insufficient’ knowledge and experience managing VHD patients on their own (28.0% and 8.0% respectively) and less than half felt that management of VHD patients within their institutions was ‘adequate’ or ‘very adequate’ (46.7% and 2.7% respectively). However, it is reassuring that most respondents felt comfortable discussing cases of VHD with their senior colleagues or their local cardiology services. Although many were felt to be over-zealous in wanting too frequent an echocardiography monitoring for cases of mild VHD (majority felt that the patient would require it every 1 year (25.3%) or 1-2 years (29.3%)), nevertheless attitudes in referrals to cardiology services for consult and intervention were felt appropriate (majority felt that cardiology consult would be indicated if valvular lesion was at least moderate in severity (56.0%), when there were changes to the heart function or structure (52.0%), when patients became symptomatic (45.3%) or when there were two or more valvular lesions simultaneously (45.3%). However, within a Malaysian context, there may be a need to shift attitudes towards referring much earlier, consistent with changes in recent international guidelines on managing VHD, as valvular surgery waiting times are extremely long.

Conclusion

The survey highlights the need for education amongst internal medicine clinician to tackle both the over-zealous attitude in monitoring patients with mild valvular disease on one extreme,  and in improving early referrals for VHD indicated for intervention in the other. Abstract Figure. Survey item on echocardiography  Abstract Figure. Survey item on cardiology referrals

KNOWLEDGE, RISK PERCEPTION AND PREVENTIVE PRACTICES OF COVID-19 AMONG STAFF OF PRIMARY AND SECONDARY SCHOOLS IN KADUNA STATE, NIGERIA

INTRODUCTION

Kaduna State is among the three States with the highest number of confirmed COVID-19 cases. The objective of this study was to assess the knowledge, risk perception and practices of staff towards prevention and control of COVID-19 infection in schools to provide policy makers, education and health managers required information to manage the epidemic as the schools prepare to re-open.

METHODS

This was a school-based survey conducted using purposive sampling of 55 schools located in nine LGAs with the highest number of reported COVID-19 cases as at October 2020. Five schools with the highest students'/pupils' enrollment in each of the LGA were selected and all staff were interviewed. Information on knowledge, risk perception and practices of prevention was collected. Descriptive statistics were generated using Stata v14 software.

RESULTS

A total of 1065 staff in 55 schools completed the interview. Major sources of information are television (73%), radio (61%), and social media (57%); and 76% indicated that a virus is the causative agent of COVID-19. Overall, 70%, 19%, 7%, 9.3% and 0% respectively had adequate knowledge of cause, preventive measures, respiratory hygiene, modes of transmission and symptoms of COVID-19; however only 14% ever attended a workshop on COVID-19. Eighty-two percent and 89% respectively believed in the efficacy of face masks and handwashing as means of prevention; 39% thought that they are likely to contract COVID-19. Ninety-nine percent and 90% have ever used face mask and hand sanitizer to prevent COVID-19; 96% and 85% respectively have use these methods in previous 24hours. Between 42% and 73% of schools needed additional commodities/requirements/supplies to comply fully with COVID-19 prevention protocols.

CONCLUSION

While knowledge of COVID-19 is suboptimal, perception is positive and practice is high. Thus, teachers need to be well informed and encouraged to sustain current levels of preventive measures. Government needs to provide schools with adequate preventive commodities to ensure compliance.

The effect of obstructive sleep apnoea on timing of acute coronary syndrome

Background and objective

Acute coronary syndrome (ACS) remains the principal cause of death in Malaysia. It is estimated about 20% of ACS occurs at nighttime during sleep between 12am to 6am. Factors associated with nocturnal ACS are unknown. Acute nocturnal pathophysiological response to obstructive sleep apnea (OSA) may increase risk of nocturnal ACS. We hypothesized that OSA risk is associated with timing of ACS onset.

Methodology

This study included 200 patients with ACS who underwent coronary angiogram for which the time of chest pain onset was clearly identified and divided into 2 groups; nocturnal ACS (12am-5.59am) and non-nocturnal ACS (6am–11.59pm). Two validated questionnaires, STOP-BANG and Epworth Sleepiness Scale (ESS) were self-administered by subjects to determine OSA risk. All subjects timing of ACS onset, OSA risk, demography, anthropometric measurements, comorbidities and echocardiographic characteristics were analyzed.

Results

Acute coronary syndrome occurs nocturnally in 19% of ACS patients. The prevalence of high risk OSA individuals among ACS patients is 43%. There is significantly higher prevalence of high risk OSA individuals in nocturnal ACS group of 95% compared to 30% of high risk OSA individuals in non-nocturnal ACS group (p=0.001). Nocturnal ACS patients was significantly younger (50.1±8.7yrs, p=0.001), had higher BMI (33.9±4.3kg/m2, p=0.005), waist circumference (106.7±10.3cm, p=0.003) and larger neck circumference (44.6±3.3cm, p=0.001) compared to non-nocturnal ACS group. These groups had similar prevalence of other comorbidities for ACS and showed no significant difference between left and right ventricular systolic function. In multiple logistic regression analysis, the most significant predictors for nocturnal ACS are OSA risk, neck circumference and age.

Conclusion

There is a strong association between high risk OSA individuals and nocturnal ACS onset. Patient with nocturnal ACS onset should be screened for OSA and prioritized for polysomnography.

OSA prevalence according to ACS onset

Funding Acknowledgement

Type of funding source: None

Prevalence and pattern of skin diseases in patients with diabetes mellitus at a tertiary hospital in Northern Nigeria

Background

Diabetes mellitus is one of the most common metabolic disorders with a rising prevalence. It cuts across all ages and socioeconomic status. Various skin lesions are frequently observed in diabetic patients.

Aims

This study was carried out to determine the prevalence, pattern, and determinants of skin diseases in diabetic patients at the Barau Dikko Teaching Hospital, Kaduna, North West Nigeria.

Materials and Methods

One hundred consecutive diabetic patients attending the clinic were included in the study.

Results

Many of the patients had more than one skin condition at a time. The most prevalent skin diseases were idiopathic guttate hypomelanosis which was seen in 61% of patients, infections from fungal, bacterial, and viral causes occurred in 30% of patients, other skin disorders were diabetic dermopathy seen in 17% of patients, palmoplantar hyperpigmentation was seen in 13% of patients, while pruritus occurred in 12% of patients and xerosis was seen in 10% of patients.

Conclusion

Skin disorders are common among diabetic patients at Barau Dikko Teaching Hospital, Kaduna, North West Nigeria.

Sickling-suppressive effects of chrysin may be associated with sequestration of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, alteration of redox homeostasis and functional chemistry of sickle erythrocytes

Sickle cell disease (SCD) is a medical condition caused by mutation in a single nucleotide in the β-globin gene. It is a health problem for people in sub-Saharan Africa, the Middle East and India. Orthodox drugs developed so far for SCD focus largely on symptomatic respite of pain and crisis mitigation. We investigated the antisickling effects of chrysin via modulation of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, redox homeostasis and alteration of functional chemistry in human sickle erythrocytes. In silico and in vitro methods were adopted for the studies. Chrysin was docked against deoxy-haemoglobin and 2,3-bisphosphoglycerate mutase, with binding energies (-24.064 and -18.171 kcal/mol) and inhibition constant (K _i) of 0.990 µM and 0.993 µM at their active sites through strong hydrophobic and hydrogen bond interactions. Sickling was induced with 2% metabisulphite at 3 h. Chrysin was able to prevent sickling maximally at 2.5 µg/mL and reversed the same at 12.5 µg/mL, by 66.5% and 69.6%, respectively. Treatment with chrysin significantly (p < 0.05) re-established the integrity of erythrocytes membrane as evident from the observed percentage of haemolysis relative to induced erythrocytes. Chrysin also significantly (p < 0.05) prevented and reversed lipid peroxidation. Similarly, glutathione and catalase levels were observed to significantly (p < 0.05) increase with concomitant significant (p < 0.05) decrease in superoxide dismutase activity relative to untreated. From Fourier-transform infrared results, treatment with chrysin was able to favourably alter the functional chemistry, judging from the shifts and functional groups observed. Sickling-suppressive effects of chrysin may therefore be associated with sequestration of deoxy-haemoglobin, 2,3-bisphosphoglycerate mutase, alteration of redox homeostasis and functional chemistry of sickle erythrocytes.

Natural history of asymptomatic gallstones: differential behaviour in male and female subjects

OBJECTIVE

The natural history of asymptomatic (silent) gallstones has been inadequately studied. Existing information derives from studies based on oral cholecystography or relatively small sample sizes. We planned a retrospective cohort study in subjects with gallstones to determine conversion rates from asymptomatic to symptomatic.

METHODS

We extracted data from computerised databases of one government hospital and two private clinics in Malaysia. Files were scrutinised to ensure that criteria for asymptomatic gallstones were fulfilled. Patients were called on telephone, further questioned to confirm that the gallstones at detection were truly asymptomatic, and asked about symptoms that were consistent with previously defined criteria for biliary colic. Appropriate ethical clearances were taken.

RESULTS

213 (112 males) patients fulfilled the criteria for asymptomatic gallstones and could be contacted. 23 (10.8%) developed pain after an average follow up interval of 4.02 years (range 0.1-11 years). Conversion rates from asymptomatic to symptomatic gallstones were high in the first two years of follow up, averaging 4.03±0.965 per year. Over time the conversion rates slowed, and by year 10 the annual conversion rate averaged only 1.38±0.29. Conversion rates were much higher for females compared to males (F:M hazard ratio 3.23, SE 1.54, p>z 0.014). The lifetime risks for conversion approached 6.15% for males, and 22.1% for females.

CONCLUSION

In conclusion, asymptomatic gallstones are much more likely to convert to symptomatic in females than in males. Males in whom asymptomatic stones are discovered should be advised conservative treatment. Surgery may be preferable to conservative management if the subject is a young female.

Growth and branching habit of rooted cuttings collected from epicormic shoots of Betula pendula Roth

Patterns of shoot growth and branching were studied over two growing seasons in rooted cuttings collected from both epicormic shoots and seedlings of Betula pendula Roth. Epicormic shoots were induced to sprout on stumps and small logs of 5-, 10- and 30-year-old trees. The use of epicormic shoots enhanced the rooting capacity of stem cuttings collected from these shoots but did not appear to reverse the process of maturation. In this study, maturation was based on characteristics typical of mature trees but not necessarily those of the mother plant, because it was not possible to root cuttings, for comparison, from 5-, 10- and 30-year-old ortets, other than from epicormic shoots. There was evidence of the persistence of mature characteristics through an increase in shoot plagiotropism with increasing ortet age. Rooted cuttings from both seedlings and epicormic shoots, however, assumed an increasingly orthotropic habit with a smaller shoot angle at the end of the first growing season than at the beginning and this continued into the second growing season. Other indications of maturation, such as delayed bud flushing and the incidence of flowering with increasing ortet age, were also evident in rooted cuttings from epicormic shoots. There was a clear difference in branching habit depending on cutting source. Rooted cuttings derived from epicormic shoots produced nearly twice as many lateral branches compared with rooted cuttings collected from seedlings, but this was not an effect of maturation. There was some evidence that rooted cuttings derived from seedlings grew taller than rooted cuttings from epicormic shoots.