Publications by authors named "Mohammed Qari"

Article Synopsis
  • - The study investigates the oral microbiota differences between healthy individuals and those with sickle cell anemia (SCA) in the Middle East, highlighting the need for more research on this genetic disorder.
  • - Saliva samples from 36 participants (18 with SCA and 18 healthy controls) were analyzed using next-generation sequencing to identify and quantify various bacterial species in their oral microbiomes.
  • - Findings reveal that alterations in the oral microbiota may increase health complications for SCA patients, suggesting that salivary diagnostics could be useful for predicting and preventing related diseases in the future.
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Background: It is well-established that specific herbal plants contain natural active ingredients that have demonstrated anti-cancer potential. Therefore, they are considered highly beneficial as a potential adjuvant, alternative or complementary agent in anti-cancer therapy. However, the low chemical stability and limited bioavailability of 3, 3'-Diindolylmethane (DIM), a plant-derived compound used in clinical settings, limit its therapeutic applications.

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trans-Anethole a valuable compound derived from star anise widely used by ethnic tribals to manage numerous human diseases. In this study antiproliferative activities of trans-Anethole towards human liver cancer (HepG2), cervical cancer (HeLa) and breast cancer (MCF-7) cells were explored. trans-Anethole showed free radical scavenging potential as assessed by DNA nicking assay.

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Article Synopsis
  • Curcumin nanoparticles (Cur-NPs) were developed using PEG/chitosan to enhance the therapeutic effects of curcumin on liver cancer cells, which typically face limitations due to low pharmacologic profiles.
  • In tests, Cur-NPs showed cytotoxic effects on liver cancer cells (HepG2 and Huh 7) at concentrations as low as 6.25 µg/mL and inhibited cell migration significantly at higher doses.
  • The treatment led to decreased cell growth and induced apoptosis by altering the expression of critical proteins, promoting pro-apoptotic pathways while suppressing anti-apoptotic signals in liver cancer cells.
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This nonrandomized controlled trial determined the effects of Phoenix dactylifera palm date (Ajwa) intake on the number of infections and hospitalizations associated with fever, neutropenia, and mortality of pediatric cancer patients admitted between 2008 and 2017 to King Abdulaziz University Hospital (Jeddah, Saudi Arabia). Patients were eligible to be enrolled if they fulfilled the inclusion criteria, were not allergic to Ajwa, and were not enrolled in another study. Of 200 screened patients, 56 were included and 144 were excluded.

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There is a need for safe, effective treatment for atopic dermatitis (AD) in the Middle East. To propose a practical algorithm for the treatment of AD throughout the Middle East. An international panel of six experts from the Middle East and one from Europe developed the algorithm.

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Background: Higher sphingosine 1-phosphate (S1P) plasma levels are associated with decreased bone mineral density (BMD), and increased risk of prevalent vertebral fracture. So, we hypothesized that postmenopausal women with increased baseline plasma S1P levels have a greater risk for future incident fracture (osteoporosis-related fractures [ORFs]).

Methods: This study was conducted in a prospective longitudinal cohort of 707 women recruited in 2004 and followed up annually for a mean period of 5.

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Lycopene supplementation decreases oxidative stress and exhibits beneficial effects on bone health, but the mechanisms through which it alters bone metabolism in vivo remain unclear. The present study aims to evaluate the effects of lycopene treatment on postmenopausal osteoporosis. Six-month-old female Wistar rats (n=264) were sham-operated (SHAM) or ovariectomized (OVX).

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Objective: This study aims to identify possible risk factors for falls among Saudi postmenopausal women in a population-based study.

Methods: Seven hundred seven postmenopausal women aged 50 years or older were followed in a prospective cohort study. Participant demographic characteristics, medical history, lifestyle factors, past-year history of falls, and physical activity (PA) scores were assessed.

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Background. Besides lipid-lowering effect of statins, they have been shown to have nonlipid lowering effects, such as improving bone health. An improvement in bone mineral density (BMD) has been indicated in some studies after the use of statins, in addition to an increase in 25-hydroxyvitamin D (25OHD) level.

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Insulin-like growth factor 1 (IGF-1) is a determinant of bone mass and is inversely associated with vertebral fractures (VFs). Sclerostin regulates bone formation by inhibiting Wnt/β-catenin signaling. Currently, there is little information on circulating sclerostin levels among postmenopausal women with type-2 diabetes mellitus (T2DM) with VFs in relation to serum IGF-1 (s-IGF-1).

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Context: There is limited information on the effects of mechanical loading caused by physical activity (PA) on sclerostin, IGF-I, and bone turnover markers (BTM).

Objective: The objective of the investigation was to study the relationships between serum sclerostin, serum-IGF-I (s-IGF-I), BTM, and the PA level in premenopausal women and to discern how 8 wk of PA training (PAT) affects the serum levels of sclerostin, IGF-I, and BTM.

Design: This was a cross-sectional study with a subgroup followed up longitudinally.

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Sclerostin regulates bone formation by inhibiting Wnt pathway signaling. Low circulating sclerostin levels cause high bone mass. We hypothesized that postmenopausal women with increased sclerostin levels have a greater risk for osteoporosis-related fractures.

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Sclerostin is a secreted Wnt antagonist produced almost exclusively by osteocytes that regulates bone mass. However, there is currently limited information on the determinants of sclerostin in a large population-based study. The main objectives of the present study were to: (1) establish reference normative interval values for serum sclerostin in randomly selected healthy premenopausal women; (2) study the changes in serum sclerostin in relation to age in premenopausal and postmenopausal women and the factors that may influence bone turnover; and (3) determine the effect of menopausal status on serum sclerostin.

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Biochemical bone turnover markers (BTMs) provide important information on the diagnosis, therapy and monitoring of metabolic bone diseases including osteoporosis. One goal of antiresorptive therapy in women is to decrease biochemical BTMs to the lower half of reference intervals for healthy pre-menopausal counterparts, using newly developed automated assays of such markers. The main objectives of the present study were to: (1) establish reference interval values for the following biochemical BTMs: serum osteocalcine (s-OC), bone alkaline phosphatase (s-bone ALP), procollagen type 1 N-terminal propeptide (s-PINP), crosslinked C-terminal telopeptide of Type 1 collagen (s-CTX), tartarate-resistant acid phosphatase isoform 5b (s-TRACP-5b) and urinary: CTX (u-CTX), N-telopeptides of type 1 collagen (u-NTX), pyridinoline (u-PYD) and deoxypyridinoline (u-DPD) in randomly selected Saudi healthy pre-menopausal women; (2) study the changes in biochemical BTMs in relation to age in pre- and post-menopausal women and the factors reported to influence bone turnover and (3) determine the effect of menopausal status on BTMs.

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Objective: To establish normative values and distribution parameters of first-trimester screening markers, namely, fetal nuchal translucency (NT), maternal serum free beta-human chorionic gonadotrophin (beta-hCG) and pregnancy-associated plasma protein-A (PAPP-A), at 10 to 13(+6) weeks of gestation in Saudi women and to evaluate the effect of co-variables including maternal body weight, gravidity, parity, fetal gender, twin pregnancy, smoking and ethnicity on these markers.

Methods: A cohort of Saudi women (first cohort n = 1616) with singleton pregnancies prospectively participated in the present study, and fetal NT together with maternal serum free beta-hCG and PAPP-A were determined at 10 to 13(+6) weeks of gestation. The distribution of gestational age-independent multiples of the median (MoM) of the parameters was defined and normative values were established, and correction for maternal body weight was made accordingly.

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Objective: To evaluate the reference intervals for fasting total plasma homocysteine concentrations in Saudi healthy males and females in relation to age, sex and the nutritional status of folate and vitamin B12.

Methods: A prospective study was conducted on randomly selected Saudi healthy males (n=642) and females (n=784) living in the Jeddah area, Kingdom of Saudi Arabia. Plasma homocysteine together with serum folate and plasma vitamin B12 concentrations were determined.

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