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1 – 10 of 12Mohammad Alshuniaber, Omar Alhaj, Qasem Abdallah and Haitham Jahrami
This study aims to investigate the antihypertensive effect of camel milk hydrolysate in rats with fructose-induced hypertension.
Abstract
Purpose
This study aims to investigate the antihypertensive effect of camel milk hydrolysate in rats with fructose-induced hypertension.
Design/methodology/approach
The antihypertensive effect of fermented camel milk was determined using 6 groups comprising 36 Wistar male rats. Blood pressure of rats was altered via exposure to a 10% fructose (w/v) diet in drinking water for 3 weeks before conducting 21 days of treatment. The authors conducted the experiment for short and long term using different doses of 800 and 1,200 mg/kg body weight. Serum was used to assay total cholesterol (TC), triglyceride (TG), glucose and insulin levels using standard biochemical kits.
Findings
The group that received 1,200 mg hydrolysate camel milk (HM) has significantly (p = 0.003) reduced systolic and diastolic blood pressure after a short exposure time (4–8 h). These effects were significantly (p = 0.005) comparable to the nifedipine (NIF) drug group. Similar long-term (21 days) effects on blood pressure were observed in 1,200 mg HM and NIF groups. Angiotensin-converting enzyme (ACE) activity and levels were also reduced in a correlation with blood pressure reduction only in HM1200 and HM800 treated groups. The authors observed no significant effect on blood pressure in groups receiving the 800 mg HM or 1,200 mg unhydrolyzed camel milk (UM). Rats receiving the 10% fructose diet showed significant differences from control rats regarding their blood biochemistry, including TG, TC, blood glucose and insulin levels. Rats in groups NIF, HM1200 and HM800 showed a significant (p < 0.05) reduction in serum glucose, insulin, TG and TC levels toward the baseline level.
Research limitations/implications
Further mechanistic investigation on the HM antihypertensive activity is highly recommended before suggesting HM as a product to reduce blood pressure. While drug–food interaction between HM and antihypertensive drugs, especially ACE inhibitors, is probable, UM seems not to affect blood pressure or ACE activity and therefore is expected to have no or minimal effects on the activity of other antihypertensive drugs. Investigation of ACE expression from various organs including lungs and leukocytes is highly recommended in future works using sodium dodecyl-sulfate polyacrylamide gel electrophoresis and western blot analysis or reverse transcription polymerase chain reaction.
Originality/value
No previous studies have measured the antihypertensive activity of milk hydrolysate mediated by the reduction of ACE activity and levels in plasma. Mechanisms involved in attenuating the levels of ACE warrant further investigation.
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Ahmad F. Alenezi, Ahmed Aljowder, Mohamed J. Almarzooqi, Marya Alsayed, Rashed Aldoseri, Omar Alhaj, Sally Souraya, Graham Thornicroft and Haitham Jahrami
This paper aims to translate and validate an Arabic version of the Barriers to Access to Care Evaluation (BACE) BACE scale to make it appropriate for the targeted socio-cultural…
Abstract
Purpose
This paper aims to translate and validate an Arabic version of the Barriers to Access to Care Evaluation (BACE) BACE scale to make it appropriate for the targeted socio-cultural and linguistic context.
Design/methodology/approach
This psychometric study has two main compounds: translating the BACE into Arabic and validating it. Using the back-translation method, the authors involved seven professional individuals to maximize the efficacy of the translated version. The authors began with the process of translating the scale from English into Arabic and vice versa followed by evaluation, compression and matching. Later, a pilot study with a sample size of 35 participants was conducted to receive feedback on the Arabic version of the scale. Finally, an online survey was generated and distributed among Arabic-speaking countries; a total of 630 participants were voluntarily involved in this study.
Findings
A total of 630 participants completed the survey with a mean age of 31.4 ± 12.9, and 402 (63.8%) were females. Cronbach’s alpha coefficient and McDonald's Omega coefficient were both greater than 0.9. The confirmatory factor analysis was found to fit highly satisfactory with the stigma-related barriers.
Research limitations/implications
The BACE was validated in Arabic and its psychometric properties were examined in-depth and found to be strong.
Originality/value
This paper fulfils an identified need to translate tools to make mental health more accessible to patients in need.
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Areej Alsaad, Kawthar Aleid, Layla Almadani, Omar Alhaj, Haitham Jahrami and Abdulrahman Janahi
This study aimed to assess the influence of the community-based campaign on weight loss and healthy lifestyle adoption among Bahrain's adult population.
Abstract
Purpose
This study aimed to assess the influence of the community-based campaign on weight loss and healthy lifestyle adoption among Bahrain's adult population.
Design/methodology/approach
A cross -sectional self-reported online questionnaire completed in February 2021. The survey evaluated the impact of the community-based campaign health program which includes (exercise, diet plan and psychological eating behavior) weight reduction using social media platforms. The authors employed data from young and middle-aged healthy adults (n = 842) between the ages of 18-55 years, of both sexes. The intervention group (n = 842) was made up of the supporters of the voluntary community initiative called Obesity does not Suit Me (n = 194), and the control group (n = 648) was made up of non-followers of the campaign.
Findings
The study showed a statistically significant difference among the followers of the community-based campaign health program in the following parameters: 3.90-4.23 kg less, 1.46-1.59 difference in BMI and 0.05-0.06 WHR. All changes were of low effect size.
Originality/value
Diet and exercise had significant impact on weight, BMI and WHR among the followers of the community campaign. However, more research is required for sponsorship to increase the motivation and rewards for the community campaign.
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Abdulrahman Ismaeel Janahi, Iman Fahmi Mahmoud, Ibrahim Mohammed Al Alhareth, Alaa Yousef Alnakhli, Sara Nasser Almisrea, Hadel Mohammed Aljohani, Omar A. Alhaj, Adla Bakri Hassan and Haitham Jahrami
The complex interaction between the gut flora and central nervous systems made probiotics one promising natural candidate for the management and treatment of depression. Hence…
Abstract
Purpose
The complex interaction between the gut flora and central nervous systems made probiotics one promising natural candidate for the management and treatment of depression. Hence, the purpose of this paper was to assess the knowledge, patterns of consumption and attitudes of patients with depression toward probiotics.
Design/methodology/approach
In this cross-sectional study, and through simple random sampling, 200 adults who were diagnosed with various depressive symptoms were selected. A link to a self-reported survey was sent to them with the aim of collecting sociodemographic data, assessing participants’ attitudes and knowledge toward probiotic consumption, and measuring their depression status via the Patient Health Questionnaire (PHQ-9).
Findings
A total of 164 participants (82%) provided usable responses. Approximately 55% of participants had moderate depression (PHQ-9). Participants (22.6%) tend to comply with their psychiatrists’ advice regarding probiotics more than other health specialists’ advice (p = 0.04). Only 59 (36%) had knowledge about probiotics and believed that probiotics should be consumed regularly and not only after an antibiotic course. However, many tended to follow marketing tricks and were willing to buy the most expensive and advertised probiotic products. Participants showed some differences in their attitude and knowledge toward probiotics according to symptoms severity; however, the differences were insignificant (p = 0.88).
Originality/value
To the best of the authors’ knowledge, this study is believed to be the first investigation assessing the probiotics’ knowledge, patterns of consumption and attitude of patients with various depression symptoms in Bahrain. The findings of this study may help improve the well-being of depressive patients by addressing the probiotic knowledge gap among them, expand the market of probiotics and enrich nutritional psychiatry literature.
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Tom Parkinson, Tarek Zoubir, Shaher Abdullateef, Musallam Abedtalas, Ghana Alyamani, Ziad Al Ibrahim, Majdi Al Husni, Fuad Alhaj Omar, Hamoud Hajhamoud, Fadi Iboor, Husam Allito, Michael Jenkins, Abdulkader Rashwani, Adnan Sennou and Fateh Shaban
The purpose of this paper is twofold: first, to generate insight into the experiences of Syrian academics in exile in Turkey; and second, to explore approaches to collaboration…
Abstract
Purpose
The purpose of this paper is twofold: first, to generate insight into the experiences of Syrian academics in exile in Turkey; and second, to explore approaches to collaboration and community building among academics in exile and with counterparts in the international academic community.
Design/methodology/approach
The study employs a hybrid visual-autobiographical narrative methodology, embedded within a large group process (LGP) design.
Findings
Findings are presented in two phases: the first phase presents a thematic analysis of narrative data, revealing the common and divergent experiences of 12 exiled academics. The second phase presents a reflective evaluation of undertaking the LGP and its implications for community building and sustaining Syrian academia in exile.
Research limitations/implications
While this is a qualitative study with a small participant group, and therefore does not provide a basis for statistical generalisation, it offers rich insight into Syrian academics’ lived experiences of exile, and into strategies implemented to support the Syrian academic community in exile.
Practical implications
The study has practical implications for academic development in the contexts of conflict and exile; community building among dispersed academic communities; educational interventions by international NGOs and the international academic community; and group process design.
Originality/value
The study makes an original contribution to the limited literature on post-2011 Syrian higher education by giving voice to a community of exiled academics, and by critically evaluating a strategic initiative for supporting and sustaining Syrian academia. This represents significant, transferable insight for comparable contexts.
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Omar A. Alhaj, Ara D. Kanekanian and Adrian C. Peters
The main aim of this study is to investigate the whey protein profiles of different commercially available fermented milk drinks that might have been influenced by the growth of…
Abstract
Purpose
The main aim of this study is to investigate the whey protein profiles of different commercially available fermented milk drinks that might have been influenced by the growth of probiotics bacteria that have been added according to the claims made by the manufacturer.
Design/methodology/approach
The growth and the subsequent effect of probiotics on whey proteins were investigated through the peptide profiles of the hydrolysed whey protein. The profiles of whey proteins in skimmed milk and the four other probiotic fermented milk drinks were obtained by using the FPLC technique. Changes in whey proteins profiles in fermented milks were evaluated by comparing them with those of unfermented skimmed milk (control). The four samples were those of Yakult, Actimel, Muller and Tesco probiotic cranberry drinks.
Findings
This work has shown that all samples demonstrated a degree of protein hydrolysis. The high level of hydrolysis in “Yakult” and “Actimel” drink samples might have been due to the nature of the process, the length of time of fermentation or the high level of proteolytic activities of the micro‐organisms used. When compared with casein, it seems that whey proteins are more resistant to hydrolysis. The results also indicated that only traces of α‐lactalbumin were left in the whey sample from “Yakult” drink. There were noticeable reductions in the other three samples. Orotic acid, on the other hand, showed a decrease in their concentration in all whey protein samples when compared with the skimmed milk sample, except for the “Actimel” sample, which showed a noticeable increase.
Originality/value
This work has shown that there were distinct differences between the control sample (skimmed milk) and the four commercially available probiotic milk‐based fermented health drinks when a direct comparison was carried out between these samples.
Barbara Abou Tanos and Omar Meharzi
The purpose of this study is to investigate how the price delay of cryptocurrencies to market news affects the herding behavior of investors, particularly during turbulent events…
Abstract
Purpose
The purpose of this study is to investigate how the price delay of cryptocurrencies to market news affects the herding behavior of investors, particularly during turbulent events such as the COVID-19 period.
Design/methodology/approach
The paper investigates the presence of herding behavior by using Cross-Sectional Absolute Deviation (CSAD) measures. We also investigate the herding activity in the crypto traders’ behavior during up and down-market movements periods and under investor extreme sentiment conditions. The speed of cryptocurrencies’ price response to the information embedded in the market is assessed based on the price delay measure proposed by Hou and Moskowitz (2005).
Findings
Our findings suggest that cryptocurrencies characterized by high price delays exhibit more herding among investors, thereby highlighting higher degrees of market inefficiencies. This is also apparent during periods of extreme investor sentiment. We also document an asymmetric herding behavior across cryptocurrencies that present different levels of price speed adjustments to market news during bullish and bearish market conditions. Our results are consistent and robust across different sub-periods, various market return estimations and different price delay frequencies.
Practical implications
The study provides crucial guidelines for investors’ asset allocation and risk management strategies. This study is also valuable to regulators and policymakers, particularly in light of the increasing importance of financial reforms aimed at mitigating market distortions and enhancing the resilience of the cryptocurrency market. More specifically, regulations that improve the market’s information efficiency should be prioritized to speed up the response time of cryptocurrency prices to market information, which can help reduce the investors' herding behavior.
Originality/value
This paper makes a novel contribution to the academic literature by investigating the unexplored relationship between cryptocurrency price delays and the presence of herding behavior among investors, especially in times of uncertainty such as the COVID-19 pandemic.
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Yen Vy Bao Nguyen and An Hoang Kim Vo
The priority of this study is to contribute to the literature by examining herding behavior at different periods of the COVID-19 pandemic. Furthermore, this study aims to…
Abstract
Purpose
The priority of this study is to contribute to the literature by examining herding behavior at different periods of the COVID-19 pandemic. Furthermore, this study aims to investigate the herding behavior conditioned on market liquidity and information demand.
Design/methodology/approach
This study investigates herding behavior in Vietnam's stock exchanges (Ha Noi Stock Exchange and Ho Chi Minh Stock Exchange) on a sample of daily stock closing prices of 425 firms from 2018 to the first half of 2022.
Findings
The research confirms the existence of herding behavior not only for the whole but also during and post-COVID periods. These results are robust in both bull and bear markets, further confirming the influence of COVID-19 on herding in Vietnamese background. Moreover, when the authors condition exogenous factors for each period, the herding tendency is more evident at the medium market liquidity level than at high and low levels. Besides, the pandemic causes herding behavior of investors with low and medium information demand.
Research limitations/implications
These findings imply some recommendations that facilitate investors, policymakers and researchers in the context of the COVID-19 crisis.
Originality/value
The study contributes to the herding literature by examining herd behavior during the post-COVID period, suggesting the long-term impact of the health crisis. Furthermore, the research provides new evidence of herding behavior conditioned on market liquidity and information demand during different COVID sub-periods.
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Muhammad Ilyas Nadeem, Yasrul Izad Abu Bakar, Sana Akram and Atif Amin Baig
This study aims to determine the correlation of anthropometric measurements with serum lipid profile among Malay subjects in Kuala Terengganu, Malaysia.
Abstract
Purpose
This study aims to determine the correlation of anthropometric measurements with serum lipid profile among Malay subjects in Kuala Terengganu, Malaysia.
Design/methodology/approach
This cross-sectional study was conducted in Kuala Terengganu on a total of 193 individuals aged 18-60 years. Subjects were recruited via direct interview as per inclusion criteria and anthropometric measurements, i.e. body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), waist-to-height ratio, abdominal volume index and conicity index, were taken using International Standards for Anthropometric Assessment Guidelines. Fasting blood samples were collected for serum lipid profile analysis that measures triglyceride (TG), total cholesterol (TC), high-density lipoproteins (HDL), low-density lipoproteins (LDL), TG/HDL, TC/HDL and LDL/HDL. Besides socio-demographic characteristics, means and association of anthropometric parameters with lipid profiles were performed using simple linear regression and multivariate-adjusted regression analysis.
Findings
The mean age of obese (male [39.2 ± 8.7] and female [41.1 ± 1.0]) and non-obese (male [29.8 ± 1.3] and female [33.3 ± 1.3]) respondents was compared. Means of anthropometric indices and lipid profile were significantly (p < 0.001) higher in obese than in non-obese group. Multivariate-adjusted regression showed that weight and BMI increased risks for prevalent high TC, TG, LDL, TC/HDL, TG/HDL, LDL/HDL, hypercholesterolemia, hypertriglyceridemia and dyslipidemia. Regardless of sex, age and prevalent obese status, WHR increased risks for high prevalence of TC, TG, LDL, TC/HDL and LDL/HDL, and presents an independent risk factor for hypercholesterolemia and dyslipidemia. WC was highly associated with TG, while HC was associated with atherogenic lipid profile ratios: TC/HDL, TG/HDL and LDL/HDL.
Originality/value
In conclusion, the lipid profile (TC, TG and TG/HDL) of triglyceridemia and hypercholesteremia is highly correlated with anthropometric measurements (BMI, WC and WHR) of central obesity that predict obesity-associated cardiac risks.
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Tarig Zeinelabdeen Yousif Ahmed, Mawahib Eltayeb Ahmed, Quosay A. Ahmed and Asia Adlan Mohamed
The Gulf Cooperation Council (GCC) of countries has some of the highest electricity consumptions and carbon dioxide emissions per capita in the world. This poses a direct…
Abstract
Purpose
The Gulf Cooperation Council (GCC) of countries has some of the highest electricity consumptions and carbon dioxide emissions per capita in the world. This poses a direct challenge to the GCC government’s ability to meet their CO2 reduction targets. In this review paper the current household electricity consumption situation in the GCC is reviewed.
Design/methodology/approach
Three scenarios for reducing energy consumption and CO2 emissions are proposed and evaluated using strengths, weaknesses, opportunities and threats (SWOT) as well as the political, economic, social, technical, legal and environmental (PESTLE) frameworks.
Findings
The first scenario found that using solar Photovoltaic (PV) or hybrid solar PV and wind system to power household lighting could save significant amounts of energy, based on lighting making up between 8% to 30% of electricity consumption in GCC households. The second scenario considers replacement of conventional appliances with energy-efficient ones that use around 20% less energy. The third scenario looks at influencing consumer behavior towards sustainable energy consumption.
Practical implications
Pilot trials of these scenarios are recommended for a number of households. Then the results and feedback could be used to launch the schemes GCC-wide.
Social implications
The proposed scenarios are designed to encourage responsible electricity consumption and production within households (SDG12).
Originality/value
All three proposals are found viable for policymakers to implement. However, to ensure successful implementation GCC Governments are recommended to review all the opportunities and challenges associated with these schemes as laid out in this paper.
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