Anti-endometriotic Effects of Ceratonia Siliqua L. Pod on Endometrial Mesenchymal Stromal/stem Cells Isolated from Women with Endometriosis-associated Infertility

This study investigated the effects of carob (Ceratonia siliqua L.) pod extract (CPE) on human endometrial stem cells (ESCs) viability and to examine its impact on mRNA expression of methyltransferase (DNMT-1, DNMT-3A and DNMT-3B), histone deacetylase-1 (HDAC-1), matrix metalloproteinase-2 (MMP-2) and cyclooxygenase-2 (COX-2) in endometriotic patients. The ESCs were derived from endometrium of patients with endometrioma (OMA-ESCs) and deep infiltrative endometriosis samples of 10 women with endometriosis associated infertility (E-ESCs) were compared to the ESCs derived from endometrium of endometriosis free, normal women as control group (C-ESCs). The metabolic activity of control and case groups was evaluated by treating them with different concentrations of CPE. In the E-ESCs, treatment with 0.8 and 2 µg/mL of CPE resulted in downregulation of COX-2 and HDAC-1 compared to the control group (p = 0.02 and p = 0.02, respectively). Treatment with 0.8 µg/mL of CPE decreased MMP-2 and DNMT-3B genes expression (p = 0.02 and p = 0.03, respectively). Furthermore, COX-2 and DNMT-3A genes were significantly upregulated after treatment with 2 µg/mL of CPE. Expression of the COX-2, HDAC-1, DNMT-1, DNMT-3A, and DNMT-3B peptides decreased in E-ESCs, OMA-ESCs and C-ESCs after treatment with 0.8 and 2 µg/mL concentrations of the CPE. The GC analysis of the CPE resulted in 14 compounds with interactions with the target proteins through the docking process. In vitro CPE treatment significantly downregulated cell inflammatory pathway involved in the pathophysiology of endometriosis and may be a potential agent for treatment of endometriosis.

Phytochemical Characterization and Evaluation of Biological Activities of Egyptian Carob Pods (Ceratonia siliqua L.) Aqueous Extract: In Vitro Study

Ceratonia siliqua (Carob) is an evergreen Mediterranean tree, and carob pods are potentially nutritive and have medicinal value. The present study was carried out to estimate the possible biological activities of phytochemical-characterized carob pod aqueous extract (CPAE). The phytochemical contents of CPAE were determined by using colorimetric methods and HPLC. In addition, the free radical scavenging properties and anti-diabetic, anti-hemolytic, and antimicrobial activities were estimated by using standardized in vitro protocols. The phytochemical analysis revealed that CPAE was rich in polyphenols, flavonoids, and alkaloids, where it contained a significant amount of gallic acid, catechin, and protocatechuic acid. Furthermore, CPAE exhibited strong antioxidant activity where it prevented the formation of 2, 2-Diphenyl-1-picryl hydrazyl, hydroxyl, and nitric oxide free radicals. Additionally, it had a potent inhibitory effect against digestive enzymes (amylase, maltase, sucrase, and lactase). Moreover, CPAE exhibited anti-Staph aureus, anti-Escherichia coli, anti-Candida albicans, and anti-herpes simplex type I virus (HSV-I). Finally, CPAE protected the erythrocyte membrane from hypotonic solution-induced hemolysis. Altogether, CPAE could be regarded as an interesting source of biologically active antioxidant, anti-diabetic, and antimicrobial preparation for a potential application in pharmaceutical and food supplement fields.

Assemblage of indigenous arbuscular mycorrhizal fungi and green waste compost enhance drought stress tolerance in carob (Ceratonia siliqua L.) trees

In the current study, an eco-friendly management technology to improve young carob (Ceratonia siliqua L.) tree tolerance to water deficit was set up by using single or combined treatments of arbuscular mycorrhizal fungi (AMF) and/or compost (C). Two groups of young carob have been installed: (i) carob cultivated under well-watered conditions (WW; 70% field capacity (FC)) and (ii) where the plants were drought-stressed (DS; 35% FC) during 2, 4, 6, and 8 months. The effect of used biofertilizers on the course of growth, physiological (photosynthetic traits, water status, osmolytes, and mineral content), and biochemical (hydrogen peroxide (H2O2), oxidative damage to lipids (malondialdehyde (MDA), and membrane stability (MS)) traits in response to short- and long-term droughts were assessed. The dual application of AMF and C (C + AMF) boosted growth, physiological and biochemical parameters, and nutrient uptake in carob under WW and DS. After eight months, C + AMF significantly enhanced stomatal conductance by 20%, maximum photochemical efficiency of PSII by 7%, leaf water potential by 23%, chlorophyll and carotenoid by 40%, plant uptake of mineral nutrients (P by 75%, N by 46%, K+ by 35%, and Ca2+ by 40%), concentrations of soluble sugar by 40%, and protein content by 44% than controls under DS conditions. Notably, C + AMF reduced the accumulation of H2O2 and MDA content to a greater degree and increased MS. In contrast, enzyme activities (superoxide dismutase, catalase, peroxidase, and polyphenoloxidase) significantly increased in C + AMF plants under DS. Overall, our findings suggest that the pairing of C + AMF can mediate superior drought tolerance in young carob trees by increasing leaf stomatal conductance, cellular water content, higher solute concentration, and defense response against oxidative damage during the prolonged period of DS.

Chemical Composition and Antioxidant Activity of the Ceratonia Siliqua L. Seeds Oil

In this work, we are interested in the antioxidant activity of Ceratonia Siliqua L. seeds oil. After extraction of seeds oil by Soxhlet, we characterized by GC-MS and evaluated the antioxidant activity by DPPH• and ABTS+•. The obtained results show that the seeds oil of Ceratonia Siliqua L. contains various organic compounds, the majority of which are fatty acids. Furthermore, the determination of IC50 by the DPPH• and ABTS+• methods show that cyclohexane has good IC50 compared to hexane.