Eyad Mallah

Prof. Eyad Mallah


Research Focus & Metrics

Academic Career Length

16Years (2011-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 August 2011 in BMC Clinical Pathology
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Journal Article
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EMEyad Mallah
Eyad Mallah
MHMohammad F Hamad
Mohammad F Hamad
MEMays A ElManaseer
Mays A ElManaseer
NQNidal Qinna
Nidal Qinna
NINasir Idkaidek
Nasir Idkaidek
KMKhalid Matalka
Khalid Matalka
Vitamin D is cutaneously synthesized following sun exposure (vitamin D3) as well as it is derived from dietary intake (vitamin D3 and D2). Vitamin D2 and D3 are metabolized in the liver to 25-hydroxyvitamin D (25(OH)D). This metabolite is considered the functional indicator of vitamin D stores in humans. Since Jordan latitude is 31°N, cutaneous synthesis of vitamin D3 should be sufficient all year round. However, many indications reveal that it is not the case. Thus, this study was conducted to determine the 25(OH)D status among Jordanians.

1 June 2021 in Journal of Multidisciplinary Healthcare
Verified
Journal Article
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MBMona Bustami
Mona Bustami
KMKhalid Matalka
Khalid Matalka
EMEyad Mallah
Eyad Mallah
Luay Abu-QatousehLuay Abu-Qatouseh
Luay Abu-Qatouseh
Wael Abu DayyihWael Abu Dayyih
Wael Abu Dayyih
TATawfiq Arafat
Tawfiq Arafat
Objective: The study aimed to investigate the prevalence of obesity among Jordanian women and its association with a wide range of chronic diseases. Methods: Subjects were enrolled in the present cross-sectional study based on a random drop-off technique at the Obstetrics and Gynecology clinics at Jordan University Hospital. Initially, any female 18 years of age and older was asked to enroll in the study. Relevant data were gathered using a questionnaire composed of 30 questions, and body mass index (BMI) was determined from each participant’s weight and height. The following variables were collected: socio-demographic, chronic diseases, and health status. Each variable’s frequencies were reported, and the 95% confidence interval (95% CI) for each variable was calculated. For association analysis, Chi-square analysis was performed with an odds ratio (OR) and 95% CI. Multinomial logistic regression analysis was applied to a combination of independent variables and a dependent condition with covariate factors. Results: The age-standardized prevalence of overweight/obese Jordanian women was 70.6% (95% CI 66.0– 74.8%). On the other hand, the age-standardized prevalence of only obese women was 36.4 (95% Cl 31.9– 41.2%). Furthermore, the association between age and overweight/obesity was significant (p< 0.0001). The percentage of overweight and obesity started to be significant in the 30– 39 year age group. Moreover, the OR for obesity ranged from 2.7 to 7.0 (p< 0.05– 0.01) for those women with only elementary education. Besides, high parity was significantly associated with obesity and elementary education. For chronic conditions, the percentages of hypertension, diabetes, hypertriglyceridemia, osteoporosis, and rheumatoid arthritis were significantly correlated with increased BMI in Jordanian women. With age adjustment, however, only hypertension was associated with obese level 3 with OR of 7.2 and 95% CI of 2.1– 25.1 (p< 0.01). Conclusion: There is a high prevalence of overweight/obesity among women in Jordan, which was related to high parity and low education level. This high prevalence of obesity increased the incidence of chronic diseases, such as hypertension. Therefore, community-based multiple strategies are required to combat obesity in Jordanian women.

24 January 2019 in BMC Complementary and Alternative Medicine
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MAMaisa Alnaqeeb
Maisa Alnaqeeb
KMKenza Mansoor
Kenza Mansoor
EMEyad Mallah
Eyad Mallah
BGBayan Ghanim
Bayan Ghanim
NINasir Idkaidek
Nasir Idkaidek
NQNidal Qinna
Nidal Qinna
In-depth information of potential drug-herb interactions between warfarin and herbal compounds with suspected anticoagulant blood thinning effects is needed to raise caution of concomitant administration. The current study aimed to investigate the impact of co-administration of pomegranate peel and guava leaves extracts, including their quality markers namely; ellagic acid and quercetin, respectively, on warfarin’s in vivo dynamic activity and pharmacokinetic actions, in addition to potential in vitro cytochrome P450 enzymes (CYP) inhibition. Influence of mentioned extracts and their key constituents on warfarin pharmacodynamic and kinetic actions and CYP activity were evaluated. The pharmacodynamic interactions were studied in Sprague Dawley rats through prothrombin time (PT) and International Normalized Ratio (INR) measurements, while pharmacokinetic interactions were detected in vivo using a validated HPLC method. Furthermore, potential involvement in CYP inhibition was also investigated in vitro on isolated primary rat hepatocytes. Preparations of pomegranate peel guava leaf extract, ellagic acid and quercetin in combination with warfarin were found to exert further significant increase on PT and INR values (p < 0.01) than when used alone (p < 0.05). Pomegranate peel extract showed insignificant effects on warfarin pharmacokinetics (p > 0.05), however, its constituent, namely, ellagic acid significantly increased warfarin Cmax (p < 0.05). Guava leaves extract and quercetin resulted in significant increase in warfarin Cmax when compared to control (p < 0.01). Furthermore, guava leaves extract showed a significant effect on changing the AUC, CL and Vz. Significant reduction in CYP2C8, 2C9, and 3A4 was seen upon concomitant use of warfarin with ellagic acid, guava leaves and quercetin, unlike pomegranate that insignificantly affected CYP activities. All combinations enhanced the anticoagulant activity of warfarin as the results of in vivo and in vitro studies were consistent. The current investigation confirmed serious drug herb interactions between warfarin and pomegranate peel or guava leaf extracts. Such results might conclude a high risk of bleeding from the co-administration of the investigated herbal drugs with warfarin therapy. In addition, the results raise attention to the blood-thinning effects of pomegranate peel and guava leaves when used alone.

24 February 2023 in Molecules
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Journal Article
Open access
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KMKenza Mansoor
Kenza Mansoor
RBRazan Bardees
Razan Bardees
BABayan Alkhawaja
Bayan Alkhawaja
EMEyad Mallah
Eyad Mallah
Luay Abu-QatousehLuay Abu-Qatouseh
Luay Abu-Qatouseh
KMKhalid Matalka
Khalid Matalka
The Punica granatum L. (pomegranate) fruit juice contains large amounts of polyphenols, mainly tannins such as ellagitannin, punicalagin, and punicalin, and flavonoids such as anthocyanins, flavan-3-ols, and flavonols. These constituents have high antioxidant, anti-inflammatory, anti-diabetic, anti-obesity, and anticancer activities. Because of these activities, many patients may consume pomegranate juice (PJ) with or without their doctor’s knowledge. This may raise any significant medication errors or benefits because of food-drug interactions that modulate the drug’s pharmacokinetics or pharmacodynamics. It has been shown that some drugs exhibited no interaction with pomegranate, such as theophylline. On the other hand, observational studies reported that PJ prolonged the pharmacodynamics of warfarin and sildenafil. Furthermore, since it has been shown that pomegranate constituents inhibit cytochrome P450 (CYP450) activities such as CYP3A4 and CYP2C9, PJ may affect intestinal and liver metabolism of CYP3A4 and CYP2C9-mediated drugs. This review summarizes the preclinical and clinical studies that investigated the impact of oral PJ administration on the pharmacokinetics of drugs that are metabolized by CYP3A4 and CYP2C9. Thus, it will serve as a future road map for researchers and policymakers in the fields of drug-herb, drug-food and drug-beverage interactions. Preclinical studies revealed that prolonged administration of PJ increased the absorption, and therefore the bioavailability, of buspirone, nitrendipine, metronidazole, saquinavir, and sildenafil via reducing the intestinal CYP3A4 and CYP2C9. On the other hand, clinical studies are limited to a single dose of PJ administration that needs to be protocoled with prolonged administration to observe a significant interaction.

1 January 2021 in Risk Management and Healthcare Policy
Verified
Journal Article
Open access
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MBMona Bustami
Mona Bustami
KMKhalid Z Matalka
Khalid Z Matalka
YEYousef Elyyan
Yousef Elyyan
NHNagham Hussein
Nagham Hussein
NHNour Hussein
Nour Hussein
TATawfiq Arafat
Tawfiq Arafat
Objective: The aim of this study was to assess factors related to the onset of premature/early natural menopause among Jordanian women. Methods: A cross-sectional study was conducted in early 2016. Subjects were enrolled based on random drop-off technique to the Obstetrics and Gynecology clinics at the Jordan University Hospital. Women 18 years of age and above were initially eligible to enroll, and women who had surgically induced menopause or specific disease were excluded from the analysis. Relevant data were collected using a questionnaire that included 30 questions. The following variables were collected: socio-demographic, body mass index, chronic conditions, diseases, reproductive characteristics, and health status. Hormone indicators of menopause were tested by measuring estrogen (E2) and follicle-stimulating hormone (FSH) levels. Age at natural menopause (ANM) was self-reported retrospectively and considered an independent variable against BMI, smoking, hormone therapy, and concomitant diseases. Association analysis and multinomial logistic regression were used to examine the associated factors of ANM with adjusted odds ratios (ORs), and their 95% confidence intervals (CIs) were reported. Results: A total of 409 women were included in the analysis, aged between 20− 75 years. The mean ANM in our sample was 48.5± 5.0, with 2.7% of the women experienced premature menopause (ANM < 40) and 7.8% early menopause (ANM 40– 44). Within the menopause women (n=242), the percentage of women who had premature menopause was 4.5%, 13.6% with early menopause, and 21.1% with late menopause (ANM > 52). Smoking was the major risk factor for premature/early menopausal age among Jordanian women with an OR of 2.46 (95% CI: 1.08– 5.59, p< 0.05). On the other hand, women with occasional arthritis symptoms and diseases such as hypertension, diabetes, dyslipidemia, and their combination were associated with average (45– 52 years) or late menopause (> 52 years). Conclusion: Smoking is the main contributor of premature/early menopause in Jordanian women. Increased awareness and public health policy about the adverse effects of smoking on women’s reproductive health are needed.

13 October 2022 in Journal of Food Quality
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Journal Article
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ZAZead Helmi Abudayeh
Zead Helmi Abudayeh
UKUliana Karpiuk
Uliana Karpiuk
NANarjes Armoon
Narjes Armoon
QAQAIS ABUALASSAL
QAIS ABUALASSAL
EMEyad Mallah
Eyad Mallah
YAYousef Aldalahmeh
Yousef Aldalahmeh
Macroscopic and microscopic analysis of R. damascena buds and flower petals was used to find the main morphological and anatomical features of these types of medicinal plant material (MPM). The presence of polysaccharides, free and bound monosaccharides, tannins, flavonoids, saponins, and essential oils was confirmed by chemical and histochemical reactions. The quality indicator of R. damascena buds and flower petals was evaluated in this study; weight loss on drying gave the next result: 6.690.20 for flower petals and 6.650.13 for buds. The swelling index showed a high result for R. damascena flower petals and buds. R. damascena buds swelling index50.2 and R. damascenaflower petals swelling index150.6. The determination of volatile substances by GC/MS shows the presence of 18 volatile compounds in flower petals and buds, this number varies up to 17. Nonadecane, heneicosane, and octadecane are the main components in both medicinal plant materials. Both buds and flower petals contain approximately the same amount of citronellol. Phenylethyl alcohol is present in large amounts in buds but in small amounts in flower petals. R. damascena flower petals and buds are the sources of volatile compounds, phenols, and polysaccharides. The results of our investigation showed great differences and similarities between buds and flower petals of R. damascena. We have confirmed that not only buds but also flower petals could be a source of biologically active substances (BASs) such as essential oils, polysaccharides, and phenolic compounds. Flower petals could be an alternative MPM. We would also like to underline the importance of standard documentation for MPM: its macro and microscopic description, harvest time, control techniques of the qualitative composition, and the quantitative content of the main BAS. Because it will help in the production of various high-quality products that can be used in medicine, pharmacy, food, and the perfume industries.