Abdulrahman MUJALLI

Dr. Abdulrahman MUJALLI

Clinical Laboratory Sciences, Umm al-Qura University, Makkah al Mukarramah, Saudi Arabia
orcid

Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

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

Representative Publications

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1 June 2016 in Biochimie
Verified
Journal Article
Closed access
JVJulien Viaud
Julien Viaud
RMRana Mansour
Rana Mansour
AAAdrien Antkowiak
Adrien Antkowiak
AMAbdulrahman MUJALLI
Abdulrahman MUJALLI
CVColin Valet
Colin Valet
BPBernard PAYRASTRE
Bernard PAYRASTRE

21 May 2022 in Molecules
Verified
Journal Article
Open access
PDF file
AAAyman Alhazmi
Ayman Alhazmi
Abdullah F. AldairiAbdullah F. Aldairi
Abdullah F. Aldairi
AAAhmad Alghamdi
Ahmad Alghamdi
AAAnas Alomery
Anas Alomery
AMAbdulrahman MUJALLI
Abdulrahman MUJALLI
AAAbdulrhman Alghamdi
Abdulrhman Alghamdi
Commiphora gileadensis (CG) is a small tree distributed throughout the Middle East. It was traditionally used in perfumes in countries in this area. In Saudi Arabia, it was used to treat wounds burns and as an antidote to scorpion stings. This study aimed to evaluate the antimicrobial activity and cutaneous wound healing efficiency of the CG extracts using microbiological tests, rate of wound contraction and histopathological changes. CG plant were extracted using the methanol extraction technique; then, the methanolic extract was characterized using liquid chromatography coupled with mass spectrometry (LC–MS). Afterwards, a six-millimetre (mm) excision wound was induced in 60 male Balb/c mice. Mice were classified into two classes; each class consisted of three groups of 10 mice. In the non-infected wound class, the group I was assigned as control and received normal saline. Group II received gentamicin treatment, and group III treated with CG-methanolic extract. In the Staphylococcus aureus-infected class, group IV received normal saline, and groups V and VI were treated with gentamicin and CG-methanolic extract, respectively. The colonization of infected wounds was determined using colony-forming units (CFUs), and the percentage of wound contraction was measured in all groups. Finally, the histopathologic semi-quantitative determination of wound healing was evaluated by inflammatory cell infiltration, the presence of collagen fibres and granulation tissue, and the grade of re-epithelization. Composition analysis of the methanolic extract confirmed the presence of a high amount of ceramide (69%) and, to a lesser extent, hexosylceramide (18%) and phosphatidylethanolamine (7%) of the total amount. Additionally, there was a statistically significant difference between the percentage of wound contraction in the CG-treated and control groups in both Staphylococcus aureus-infected and non-infected wounds (p < 0.01). The colonization of the infected wounds was lower in the group treated with CG than in the control group (p < 0.01). In both non-infected and infected wounds, the CG-treated group showed significant statistical differences in inflammatory cell infiltration, collagen fibres, re-epithelization and granulation tissue formation compared with the control group (p < 0.01). The CG extract possesses antibacterial and anti-inflammatory properties that induce wound healing.

1 September 2018 in Biochimica et Biophysica Acta (BBA) - Molecular and Cell Biology of Lipids
Verified
Journal Article
Closed access
AMAbdulrahman MUJALLI
Abdulrahman MUJALLI
GCGaëtan Chicanne
Gaëtan Chicanne
Justine Bertrand-MichelJustine Bertrand-Michel
Justine Bertrand-Michel
FVFanny Viars
Fanny Viars
LSLen Stephens
Len Stephens
BPBernard PAYRASTRE
Bernard PAYRASTRE

1 November 2020 in Genomics
Verified
Journal Article
Closed access
AMAbdulrahman MUJALLI
Abdulrahman MUJALLI
BBBabajan Banaganapalli
Babajan Banaganapalli
NANuha Mohammad Alrayes
Nuha Mohammad Alrayes
NSNoor A. Shaik
Noor A. Shaik
RERamu Elango
Ramu Elango
JAJumana Y. Al-Aama
Jumana Y. Al-Aama

3 May 2023 in Frontiers in Endocrinology
Verified
Journal Article
Open access
Bassem RefaatBassem Refaat
Bassem Refaat
AAAkhmed Aslam
Akhmed Aslam
SIShakir Idris
Shakir Idris
AAAhmed H. Almalki
Ahmed H. Almalki
MAMofareh Y. Alkhaldi
Mofareh Y. Alkhaldi
IMIbrahim A. Muhayya
Ibrahim A. Muhayya
Background: Although estrogen (ERα/ERβ), progesterone (PGR), and androgen (AR) receptors are pathologically altered in colorectal cancer (CRC), their simultaneous expression within the same cohort of patients was not previously measured.Methods: ERα/ERβ/PGR/AR proteins were measured in archived paired normal and malignant colon specimens (n =120 patients) by immunohistochemistry, and results were analyzed by gender, age (≤50 vs. ≥60 years), clinical stages (early-stage I/II vs. late-stage III/IV), and anatomical location (right; RSCs vs. left; LSCs). Effects of 17β-estradiol (E2), progesterone (P4), and testosterone alone or combined with the specific blockers of ERα (MPP dihydrochloride), ERβ (PHTPP), PGR (mifepristone), and AR (bicalutamide) on cell cycle and apoptosis were also measured in the SW480 male and HT29 female CRC cell lines. Results: ERα and AR proteins increased, whilst ERβ and PGR declined markedly in malignant specimens. Moreover, male neoplastic tissues showed highest AR expression, whilst ERβ and PGR weakest alongside ERα strongest expression was seen in cancerous tissues from women aged ≥60 years. Late-stage neoplasms also revealed maximal alterations in the expression of sex steroid receptors. By tumor location, LSCs disclosed significant elevations in ERα with marked declines in PGR compared with RSCs, and ERα strongest alongside PGR weakest expression was detected in advanced LSCs from women aged ≥60 years. Late-stage LSCs from females aged ≥60 years also showed weakest ERβ and strongest AR expression. In contrast, male RSC and LSC tissues exhibited equal ERβ and AR expression in all clinical stages. ERα and AR proteins also correlated positively, whereas ERβ and PGR inversely, with tumor characteristics. Concomitantly, E2 and P4 monotherapies triggered cell cycle arrest and apoptosis in the SW480 and HT29 cells, and while pre-treatment with ERα-blocker enhanced the effects of E2, ERβ-blocker and PGR-blocker suppressed the E2 and P4 anti-cancer actions, respectively. In contrast, treatment with the AR-blocker induced apoptosis, whilst co-treatment with testosterone hindered the effects. Conclusions: This study advocates that protein expression of sex steroid receptors in malignant tissues could represent prognostic markers, as well as hormonal therapy could provide an alternative strategy against CRC, and their efficacies could be dependent on gender, clinical stage, and tumor location.

1 January 2018 in Advances in Biological Regulation
Verified
Journal Article
Closed access
FVFanny Vardon-Bounes
Fanny Vardon-Bounes
AMAbdulrahman MUJALLI
Abdulrahman MUJALLI
CCClaire Cenac
Claire Cenac
SSSonia Severin
Sonia Severin
PFPauline Le Faouder
Pauline Le Faouder
BPBernard PAYRASTRE
Bernard PAYRASTRE