Faculty of Biotechnology Research Paper

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1 of 1 ISOLATION AND CHARACTERIZATION OF CAPSULAR (VI) POLYSACCHARIDE OF SALMONELLA TYPHI ANTIGEN AND TESTING ITS IMMUNOGENICITY IN LABORATORY ANIMALS
(2012) Fahmy, L. I.; Khalaf, N. G.; Ashour, M. S. E.; Hashem, A. -G. M.
[1,2,4] Triazolo [3,4‑a]isoquinoline chalcone derivative exhibits anticancer activity via induction of oxidative stress, DNA damage, and apoptosis in Ehrlich solid carcinoma‑bearing mice
(Springer Verlag, 2022-07-26) WalyEldeen, Amr Ahmed ; El‑Shorbagy, Haidan M; Hassaneen, Hamdi M; Abdelhamid, Ismail A; Sabet, Salwa ; Ibrahim, Sherif Abdelaziz
Despite the advances made in cancer therapeutics, their adverse efects remain a major concern, putting safer therapeutic options in high demand. Since chalcones, a group of favonoids and isofavonoids, act as promising anticancer agents, we aimed to evaluate the in vivo anticancer activity of a synthetic isoquinoline chalcone (CHE) in a mice model with Ehrlich solid carcinoma. Our in vivo pilot experiments revealed that the maximum tolerated body weight-adjusted CHE dose was 428 mg/kg. Female BALB/c mice were inoculated with Ehrlich ascites carcinoma cells and randomly assigned to three dif- ferent CHE doses administered intraperitoneally (IP; 107, 214, and 321 mg/kg) twice a week for two consecutive weeks. A group injected with doxorubicin (DOX; 4 mg/kg IP) was used as a positive control. We found that in CHE-treated groups: (1) tumor weight was signifcantly decreased; (2) the total antioxidant concentration was substantially depleted in tumor tis- sues, resulting in elevated oxidative stress and DNA damage evidenced through DNA fragmentation and comet assays; (3) pro-apoptotic genes p53 and Bax, assessed via qPCR, were signifcantly upregulated. Interestingly, CHE treatment reduced immunohistochemical staining of the proliferative marker ki67, whereas BAX was increased. Notably, histopathological examination indicated that unlike DOX, CHE treatment had minimal toxicity on the liver and kidney. In conclusion, CHE exerts antitumor activity via induction of oxidative stress and DNA damage that lead to apoptosis, making CHE a promising candidate for solid tumor therapy.
Abstract 3302: High incidence of MAC387 positive cells in the carcinoma tissues of inflammatory breast cancer patients correlate with the detection of multiple human Cytomegalovirus genotypes and invasive properties of the disease
(American Association for Cancer Research, 2016) Taha Mohamed, Hossam; Gadalla, Ramy; Abdel Aziz Ibrahim, Sherif; Akram Nouh, M.; El-Shinawi, Mohamed; J. Schneider, Robert; Mostafa Mohamed, Mona
Introduction: Previously we showed that the incidence of multiple human cytomegalovirus (HCMV) genotypes in the carcinoma tissues of inflammatory breast cancer (IBC) patients plays essential role in the disease progression. Primary HCMV infection to monocytes induces differentiation and biological turnover of monocytes to macrophages. In addition infected macrophages serves as “mobile vectors” for virus spreading and dissemination to different organs mainly by transendothelial migration. In addition we screened for the infiltration of CD14+ and CD68+ monocytes/macrophages markers in the carcinoma tissues of IBC versus non-IBC patients we showed that of CD14+ cells highly infiltrate tumor microenvironment (TME) of IBC patients compared to non-IBC. Aims: In the present study we aim to 1) Assess the level of expression of MAC387 protein by monocytes/macrophages infiltrating TME of IBC versus non-IBC patients; 2) Test the correlation between the density of infiltrated MAC387+ cells and the incidence of different HCMV genotypes in carcinoma tissues of IBC versus non-IBC tissues. Since MAC387 found to be more common in cancers characterized by high metastatic properties we will also 3) determine whether the expression of MCA387 correlate with lymph-node metastasis and lymphovascular invasion in IBC versus non-IBC breast cancer patients. Materials and Methods: A total of 135 breast cancer patients (91 non-IBC and 44 IBC) were enrolled to the present study during the period of January 2012 to September 2015 from Ain Shams university Hospitals. Detection of MAC387 marker was assessed by immunohistochemistry and HCMV genotypes were detected using multiplex PCR methodology. Results: MAC387+ positive cells were more prevalent in IBC tissues than non-IBC tissues (p = 0.4). Incidence of higher number of MAC387+ cells were positively correlate with higher number of metastatic lymph nodes in both IBC and non-IBC patients r = 0.807 and 0.779 respectively. Moreover, Incidence of higher number of MAC387+ cells found to be positively correlate with lymphovascular invasion in IBC patients r = 0622. Detection of multiple HCMV genotypes was statistically higher (p = 0.04) in IBC tissues in comparison with non-IBC tissues. Moreover, triple negative non-IBC and IBC tissues showed higher incidence of multiple HCMV genotypes in comparison with hormonal positive non-IBC and IBC tissues. of the monocytes/macrophages MAC387+ positive cells were more prevalent in IBC tissues showed multiple HCMV genotypes in comparison with IBC tissues showed single HCMV genotype (p = 0.46). Conclusion: MAC387+ positive cells were more prevalent in IBC tissues and correlate with presence of multiple HCMV genotypes and high invasive properties of the disease.
Abstract 4788: Detection of different genotypes of Human Cytomegalovirus in breast cancer patients.
(American Association for Cancer Research, 2013) Taha Mohamed, Hossam; El-Shinawi, Mohamed; Bashtar, Abdel-Rahman; Tarek abdel Salam, El-Said; J. Schneider, Robert; Mostafa Mohamed, Mona
Background: Human Cytomegalovirus (HCMV) is an endemic herpes virus that re-emerges in cancer patients enhancing oncogenic potential. Recent studies have shown that HCMV infection is associated with certain types of cancer morbidity such as glioblastoma; Although HCMV has been detected in breast cancer tissues. The ability of HCMV to infect diverse organs and cell types in vivo has been attributed to strain variations in certain genes of the virus. The relationship between genetic variants of the envelope glycoprotein genes of HCMV and disease outcome has been studied recently, among these variable genes HCMV ORF UL73 (envelope glycoprotein N). Aims: The aims of the present study were to 1) Screen for the infection of Human cytomegalovirus infection in inflammatory versus non-inflammatory breast cancer patients and 2) test the frequency of occurrence of multiple genotypes of HCMV glycoprotein N in IBC versus Non-IBC patients, to determine if there is any mixed infections by multiple genotypes in paired clinical specimens obtained from patients. Material and Methods: A total 93 (62 Non-IBC and 31 IBC) women diagnosed with breast cancer by clinical examination, ultrasound, mammography, and confirmed by biopsy (tru-cut) were enrolled into this study from Ain Shams university Hospitals. During modified radical mastectomy or conservative breast surgery carcinoma and non carcinoma tissues with peripheral blood were collected to detect the presence of Human cytomegalovirus DNA using nested PCR. HCMV glycoprotein N polymorphism (gN) was detected using multiplex PCR by using specific primers to each gN genotype which enable us to detect any mixed genotypes infection. Results: Analysis of the HCMV nested PCR to the carcinoma tissues showed that 63% of non-IBC carcinoma tissues were HCMV-DNA positive and 37% were HCMV-DNA negative. In IBC 80% of carcinoma tissues were HCMV-DNA positive and 20% were HCMV-DNA negative. Application of multiplex PCR for gN gene on HCMV positive carcinoma tissues (25 IBC and 32 Non-IBC) revealed that gN-1 genotype was detected in 25% of the non-IBC patients and 32% of the IBC patients, While gN-3b was detected in 6.25% of non-IBC patients and 4% of the IBC patients. Genotype gN-4a was detected in 9.38% of Non-IBC patients and in 4% of the IBC patients, while gN-4b\c was detected in 59.37% of Non-IBC patients and in 60% of the IBC patients. Also revealed mixed infection of gN-1+ gN-4b\c, gN-3b + gN-4b\c and gN-4a + gN-4b\c in Non-IBC patients and gN-1+ gN-4b\c, gN-3b + gN-4b\c in IBC patients. Conclusion: The frequency of HCMV infection in IBC was higher than Non-IBC patients; however the most dominant HCMV gN genotypes in IBC and Non-IBC are similar.
Accurate classification and hemagglutinin amino acid signatures for influenza A virus host-origin association and subtyping
(ACADEMIC PRESS INC ELSEVIER SCIENCE, 2014) ElHefnawi, Mahmoud; Sherif, Fayroz E.
Host-origin classification and signatures of influenza A viruses were investigated based on the HA protein for tracking of the HA host of origin. Hidden Markov models (HMMs), decision trees and associative classification for each influenza A virus subtype and its major hosts (human, avian, swine) were generated. Features of the HA protein signatures that were host-and subtype-specific were sought. Host-associated signatures that occurred in different subtypes of the virus were identified. Evaluation of the classification models based on ROC curves and support and confidence ratings for the amino acid class-association rules was performed. Host classification based on the HA subtype achieved accuracies between 91.2% and 100% using decision trees after feature selection. Host-specific class association rules for avian-host origins gave better support and confidence ratings, followed by human and finally swine origin. This finding indicated the lower specificity of the swine host, perhaps pointing to its ability to mix different strains. (C) 2013 Elsevier Inc. All rights reserved.
Adaptive Mechanisms During the Recovery of Tolerant and Sensitive Local Grape Genotypes Subjected to Salt Stress
(Universidad del Zulia, 2024-08) Mahmoud, Rania; Ashry, Fouad; Shallan, Roqaya
Utilization of distinct genetic resources is an auspicious prospective strategy to combat adverse impacts of salinity, which is expected to get worse under climate change conditions, for maintaining grape production and quality. This research aims to study the adaptive mechanisms during the recovery of tolerant and sensitive salt-stressed local grape genotypes on the bases of biochemical, anatomical and gene expression responses. Transplants of three Egyptian grapes (Vitis vinifera); Baltim Eswid, Romy Ahmer and Romy Abiad, were exposed to sodium chloride-induced salt stress of 2.28 and 3.75 mS compared to 695 µS water-irrigated control for two months, then all plants were irrigated with tap water for additional one month for recovery. Recovered Baltim Eswid cultivar following the highest saline treatment gave maximum survival percentage (100 %), while Romy Abiad recorded the lowest rate (40 %). Suggested adaptive mechanisms include: damage reduction caused by salinity-related oxidative stress, osmotic adjustment, and perform structural modifications that allow protection. It was concluded that, Blatim Eswid is a superior salt-tolerant local grape genotype, while Romy Abiad is the most sensitive as affected mostly by oxidative stress represented by a significant increment of hydrogen peroxide content.
Adipocyte of Obese Breast Cancer Patients Is Characterized by The Overexpression of Caveolin-1 Protein/Mediator the Main Constituent of the Plasma Membrane Vesicles Caveolae That Contain Proteins Contribute to Breast Cancer Progression
(Egyptian Society of Biological Sciences, 2019) Saber, Aya; Abdelaziz Ibrahim, Sherif; Hosney, Mohamed; Taha Mohamed, Hossam; Fares, Mohamed; Sabet, Salwa; El-Shinawi, Mohamed; Mostafa Mohamed, Mona
Breast cancer (BC) is the second leading mortality cause due to poor survival rates compared to lung cancer all over the world. Recently, lifestyle increased obesity among the population globally. Since, the adipose tissues (AT) are the major contributor to the volume of the breast and adipocytes cells, which constitute AT are one of the major prominent cells play an effective role in cancer progression via releasing different mediators and adipokines. Thus, AT may display a crucial role in BC progression, especially in obese patients compared to non-obese patients, which characterized by increased AT. Interestingly, adipocytes are characterized by expressing caveolin-1 (Cav-1) protein. Cav-1 constitutes the lipid raft of caveola which contains different proteolytic enzymes inducing cancer metastasis. In this regard, the aim of the present study was to explore the level of expression of Cav-1 protein in the tissue specimen of 5 non-obese vs. 15 obese patients using immunohistochemistry (IHC) and immunoblotting techniques. Our finding demonstrates that the level of Cav-1expression was statistically significantly low in non-obese compared to obese BC patients (p < 0.05). Herein, our results revealed that the highest expression of Cav-1 in obese patients compared to non-obese (control) patients can be considered as a biomarker for BC patients.
Adipokine (adiponectin-rs1501299) Gene Variant and Patient Characteristics in Relation to Metabolic-associated Fatty Liver Disease
(Elsevier B.V, 2024-09) Mohamed, Amal A; Hassanin, Soha; Mohamed, Ahmed A; Zaafar, Dalia; Mohamed, Rasha; Hassan, Mohamed B; Hassanin, Al-Shaymaa A; Abouahmad, Eman Alsayed; Sak, Mohamed A; Abd el salam, Soha M; Abdelghafour, Reem A. M; Muharram, Nashwa M; Darwish, Marwa K; faried, Saadia; Nasraldin, Karmia; Hafez, Wael
Background: Several genetic and metabolic variables, most notably the variation in the adipokine gene rs1501298, have been linked to metabolic-associated fatty liver disease etiopathogenesis (MAFLD). Liver biopsy, the gold standard for diagnosing MAFLD, is an invasive procedure; therefore, alternative diagnostic methods are required. Consequently, the integration of these metabolic variables with some of the patients’ characteristics may facilitate the development of noninvasive diagnostic methods that aid in the early detection of MAFLD, identification of at-risk individuals and planning of management strategies. Methods: This study included 224 Egyptians (107 healthy individuals and 117 MAFLD patients). Age, sex, BMI, clinical and laboratory characteristics, and rs1501299 adipokine gene polymorphisms were examined. The rs1501299 variant, insulin resistance, hypertension, obesity, blood pressure, lipid profile, hemoglobin A1C level, and hepatic fibrosis predictors were evaluated for MAFLD risk. The feasibility and effectiveness of developing non-invasive MAFLD diagnostic models will be investigated. Results: The +276G/T (rs1501299) polymorphism (GG vs GT/TT) was linked with MAFLD (OR: 0.43, CI: 0.26–0.69, P = 0.002). The GG variants had lower MAFLD rates than those of the GT and TT variants. In addition to altered lipid profiles, patients with MAFLD showed increased gamma-glutamyl transferase levels (GGT: 56 IU/L vs. 36 IU/L). Genetic diversity also affects the accuracy of hepatic fibrosis and steatosis prediction. Hepatic fibrosis and steatosis predictors had receiver operating characteristic (ROC) AUCs of 0.529%, 0.846%, and 0.700–0.825%, respectively. We examined a diagnostic model based on these variables and demonstrated its effectiveness. Conclusion: The Adipokine variant rs1501299 increased the risk of MAFLD. Identifying and genotyping this variation and other metabolic variables allow for a noninvasive diagnostic model for early MAFLD diagnosis and identification of those at risk. This study illuminates the prevention and management of MAFLD. Further research with more participants is needed to verify these models and to prove their MAFLD diagnostic efficacy.
Alkali-cellulose/ Polyvinyl alcohol biofilms fabricated with essential clove oil as a novel scented antimicrobial packaging material
(Elsevier Ltd., 2022-12) Sayed, Asmaa; Safwat, Gehan; Abdel-raouf, Manar; Mahmoud, Ghada A
The increased environmental awareness issues encouraged the manufacture of food -wares and packaging items from cellulosic materials to cope with the rapid growth of fast- food industry. In this work, scented biofilms with potent antimicrobial activity were prepared in a multi-step process assisted with the AFM. The biofilms comprised of polyvinyl alcohol (PVA) physically crosslinked with different weight ratios of alkaline cellulose (Na-Cell) [PVA/Na-Cell]. Then, the effect of gamma irradiation on the surface features of the optimized sample (PVA/Na-Cell4) was verified at 5-25 KGy. The optimum film (PVA/Na- Cell4.20kGy) was fabricated with different weight ratios of essential clove oil (ECO). The biofilms were characterized by the AFM, FT-IR, XRD, TGA, and the DMA. The contact angle measurements of the optimized films reveal wettability resistance as following: PVA/Na-Cell4.0kGy (102.48o ) < PVA/Na-Cell4.20kGy (133.66o )< PVA/Na-Cell4.ECO20kGy (140.62o ). The antimicrobial investigation displayed remarkable effect against different pathogens. Therefore, the claimed biofilms are excellent candidates for packaging application.
Alleviation of calcium hydroxide nanoparticles induced genotoxicity and gastritis by coadministration of calcium titanate and yttrium oxide nanoparticles in mice
(Nature Publishing Group, 2023-11) Mohamed, Hanan R. H; Elbasiouni, Salma H; Farouk, Ahmed H; Nasif, KirollsA; Nasraldin, Karima; Safwat, Gehan
Diverse applications of nanoparticles due to their unique properties has rapidly increased human exposure to numerous nanoparticles such as calcium hydroxide (Ca(OH)2), calcium titanate (CaTiO3), and yttrium oxide (Y2O3) nanoparticles almost in all aspect of daily life. However, very limited data are available on the efect of these nanoparticles on genomic DNA integrity and infammation induction in the gastric tissues. Hence, this study estimated the efect of Ca(OH)2, CaTiO3, or/and Y2O3 nanoparticles multiple oral administration on the genomic DNA damage and infammation induction in the mice gastric tissues. A suspension containing 50 mg/kg b.w of Ca(OH)2, CaTiO3, or Y2O3 nanoparticles were given orally to male mice separately or together simultaneously three times a week for two consecutive weeks. Multiple oral administration of Ca(OH)2 nanoparticles led to signifcant elevations in DNA damage induction and ROS generation, in contrast to the non-signifcant changes observed in the level of induced DNA damage and generated ROS after administration of CaTiO3 or Y2O3 nanoparticles separately or in combination with Ca(OH)2 nanoparticles. Oral administration of Ca(OH)2 nanoparticles alone also highly upregulated INOS and COX-2 genes expression and extremely decreased eNOS gene expression. However, high elevations in eNOS gene expression were detected after multiple administration of CaTiO3 and Y2O3 nanoparticles separately or together simultaneously with Ca(OH)2 nanoparticles. Meanwhile, non-remarkable changes were noticed in the expression level of INOS and COX-2 genes after administration of CaTiO3 and Y2O3 nanoparticles separately or simultaneously together with Ca(OH)2 nanoparticles. In conclusion: genomic DNA damage and infammation induced by administration of Ca(OH)2 nanoparticles alone at a dose of 50 mg/kg were mitigated by about 100% when CaTiO3 and Y2O3 nanoparticles were coadministered with Ca(OH)2 nanoparticles until they reached the negative control level through altering the expression level of eNOS, INOS and COX-2 genes and scavenging gastric ROS. Therefore, further studies are recommended to investigate the toxicological properties of Ca(OH)2, CaTiO3 and Y2O3 nanoparticles and possibility of using CaTiO3 and Y2O3 nanoparticles to mitigate genotoxicity and infammation induction by Ca(OH)2 nanoparticles.
Alleviation of calcium hydroxide nanoparticles induced genotoxicity and gastritis by coadministration of calcium titanate and yttrium oxide nanoparticles in mice
(Nature Publishing Group, 2023-12) Mohamed, Hanan R. H; Elbasiouni, Salma H; Farouk, Ahmed H; Nasif, KirollsA; Nasraldin, Karima; Safwat, Gehan
Diverse applications of nanoparticles due to their unique properties has rapidly increased human exposure to numerous nanoparticles such as calcium hydroxide (Ca(OH)2), calcium titanate (CaTiO3), and yttrium oxide (Y2O3) nanoparticles almost in all aspect of daily life. However, very limited data are available on the effect of these nanoparticles on genomic DNA integrity and inflammation induction in the gastric tissues. Hence, this study estimated the effect of Ca(OH)2, CaTiO3, or/and Y2O3 nanoparticles multiple oral administration on the genomic DNA damage and inflammation induction in the mice gastric tissues. A suspension containing 50 mg/kg b.w of Ca(OH)2, CaTiO3, or Y2O3 nanoparticles were given orally to male mice separately or together simultaneously three times a week for two consecutive weeks. Multiple oral administration of Ca(OH)2 nanoparticles led to significant elevations in DNA damage induction and ROS generation, in contrast to the non-significant changes observed in the level of induced DNA damage and generated ROS after administration of CaTiO3 or Y2O3 nanoparticles separately or in combination with Ca(OH)2 nanoparticles. Oral administration of Ca(OH)2 nanoparticles alone also highly upregulated INOS and COX-2 genes expression and extremely decreased eNOS gene expression. However, high elevations in eNOS gene expression were detected after multiple administration of CaTiO3 and Y2O3 nanoparticles separately or together simultaneously with Ca(OH)2 nanoparticles. Meanwhile, non-remarkable changes were noticed in the expression level of INOS and COX-2 genes after administration of CaTiO3 and Y2O3 nanoparticles separately or simultaneously together with Ca(OH)2 nanoparticles. In conclusion: genomic DNA damage and inflammation induced by administration of Ca(OH)2 nanoparticles alone at a dose of 50 mg/kg were mitigated by about 100% when CaTiO3 and Y2O3 nanoparticles were coadministered with Ca(OH)2 nanoparticles until they reached the negative control level through altering the expression level of eNOS, INOS and COX-2 genes and scavenging gastric ROS. Therefore, further studies are recommended to investigate the toxicological properties of Ca(OH)2, CaTiO3 and Y2O3 nanoparticles and possibility of using CaTiO3 and Y2O3 nanoparticles to mitigate genotoxicity and inflammation induction by Ca(OH)2 nanoparticles.
Allicin mitigates hepatic injury following cyclophosphamide administration via activation of Nrf2/ARE pathways and through inhibition of inflammatory and apoptotic machinery
(Springer, 3/24/2021) Sun, Dongsheng; Sun, Chen; Qiu, Gongcai; Yao, Lei; Yu, Jian; Al Sberi, Hassan; Fouda, Manar S; Othman, Mohamed S; Lokman, Maha S; Kassab, Rami B; Abdel Moneim, Ahmed E
Treatment with anti-neoplastic agents, including cyclophosphamide (CP), is associated with several adverse reactions. Here, we distinguished the potential protective effect of allicin against CP-mediated hepatotoxicity in rats. To assess the effect of allicin, four experimental groups were used, with 7 rats per group, including control, allicin (10 mg/kg), CP (200 mg/kg), and allicin + CP-treated groups. All groups were treated for 10 days. Blood and liver samples were collected for biochemical, molecular, and histological analyses. Treatment with CP led to deformations in the liver tissue that were associated with higher liver function markers (alanine transaminase, aspartate transaminase, and alkaline phosphatase). Additionally, a disturbance in the redox balance was observed after CP exposure, as indicated by increased levels of oxidants, including malondialdehyde and nitric oxide, and the decreased levels of endogenous antioxidants, including glutathione, glutathione peroxidase, glutathione reductase, superoxide dismutase, and catalase. At the molecular level, CP treatment resulted in reduced expression of the Nrf2/ARE pathway and other genes related to this pathway, including NAD(P)H quinone dehydrogenase 1 and glutamate-cysteine ligase catalytic subunit. CP also led to a hyper-inflammatory response in hepatic tissue, with increased production of pro-inflammatory cytokines, including tumor necrosis factor-alpha and interlukin-1beta, and upregulation of nitric oxide synthase 2. CP also enhanced the immunoreactivity of the profibrogenic cytokine, transforming growth factor-beta, in liver tissue. Upregulation of caspase 3 and Bcl-2-associated X protein and downregulation of B-cell lymphoma 2 were also observed in response to CP treatment. Treatment with allicin reversed the molecular, biochemical, and histological changes that occurred with CP exposure. These results suggest that allicin can be used in combination with CP to avoid hepatotoxicity.
Aloe vera gel as a stimulant for mesenchymal stem cells differentiation and a natural therapy for radiation induced liver damage
(Oxford University Press, 2022-08-10) Farid, Alyaa; Haridyy, Hebatallah; Ashraf, Salma; Ahmed, Selim; Safwat, Gehan
Aloe vera is a medical plant that has been used, traditionally, in treatment of several dermal disorders. In addition to its role as an anti-cancer, anti-oxidant, anti-diabetic, and anti-hyperlipidemic agent. Aloe vera gel extract contains several compounds like minerals, enzymes, hormones and carbohydrates. Therefore, Aloe vera as well as its bioactive constituents have been studied to determine its intriguing potential roles in medicinal science. Mesenchymal stem cells (MSCs) are biologically active precursor cells that can self-renew and develop into a variety of cell types. Plant extracts have been used, in vitro, to enhance the proliferation and differentiation of MSCs. Therefore, the present study aimed to evaluate the therapeutic effect of lyophilized Aloe vera gel together with bone marrow (BM)-MSCs transplantation against radiation induced liver damage (RILD) in X-ray irradiated Sprague dawley male rats. By determining the oxidative stress, antioxidant enzymes, and pro-inflammatory cytokines in liver tissue homogenate, the antioxidant and anti-inflammatory properties of lyophilized Aloe vera gel were investigated. The degree of liver damage and NF-κB expression were determined using histological and immunohistochemical staining techniques. The results showed that treatment of irradiated rats with lyophilized Aloe vera gel and MSCs transplantation has led to an improvement in liver function and a decrease in fibrotic markers, oxidative stress, and pro-inflammatory cytokines; as well as, a reduction in the pathological alterations in the rats’ liver and a reduced NF-κB activation. Lyophilized Aloe vera gel provided two important functions; where it stimulated the differentiation of transplanted MSCs and alleviated the radiation induced damages in liver. Aloe vera’s antioxidant and anti-inflammatory properties have enhanced liver function, as well as, creating a favorable environment for MSCs development in the liver. MSCs, in combination with lyophilized Aloe vera gel, hold promise for regenerative medicine; where, it has a considerable impact on MSCs differentiation.
Ameliorating heat stressed conditions in wheat by altering its physiological and phenotypic traits associated with varying nitrogen levels
(Academic Press Inc, 2024-04) SHAUKAT, Muhammad; ABBASI, Asim; RAMZAN, Kashaf; HINA, Aiman; MEMON, Shafique Q; MAQSOOD, Zarish; GAAFAR, Abdel-Rhman Z; HODHOD, Mohamed S; LAMLOM, Sobhi F
Currently, more than half of the global nations cultivating wheat crops are facing severe consequences of climate change and its associated heat stress in terms of quantitative and qualitative yield losses. Plants exposed to heat stress need a balanced and adequate amount of mineral nutrients to counter its ill effects. Therefore, the present study was designed to investigate the potential effects of heat stress applied during the vegetative growth period (Zadoks growth scale: ZGS 5–60) on physiological and phenotypic traits of wheat (Triticum aestivum) crop subjected to variable rates of nitrogen (N). In this experiment, wheat plants of cv. ‘Punjab-2011’ were exposed to two levels of temperature i.e. heat stress (HS) and control or non-heat stress (NHS), and three N rates (N50 = 50 kg ha-1, N100= 100 kg ha-1 and N150 = 150 kg ha-1). The experiment was executed under controlled conditions in a completely randomized design (CRD) with six replications. One set of eighteen pots containing wheat seedlings was placed in a compartment of the greenhouse under heat-stressed conditions, while another set was placed in another compartment under non-heated conditions. The greenhouse compartments were equipped with a heating and cooling system to maintain desired ecological conditions. Pots in heated chamber were kept for 60 days from emergence (ZGS = 5–60), and then shifted to non-heated chamber till harvesting. The temperature in heat stress treatment was almost 2 ± 0.47 °C higher than in non-heated treatment. The results indicated that HS significantly reduced the photosynthetic rate by 42.52%, leaf photosynthetic efficiency by 56.82%, chlorophyll scores by 20.11%, relative water contents (RWC) by 12.81%, tillers by 48.21%, grain weight by 21.47% and grain yield by 68.20% relative to NHS conditions. These reductions were more prominent in plants subjected to a limited N dose rate (50 kg N ha-1). Furthermore, the results also revealed higher transpiration rate, stomatal conductance, and membrane ruptures under HS with N50 treatment. However, N150 treatment compensated for the detrimental effects of HS on wheat plants by improving the photosynthetic rate and efficiencies, higher RWC, more stability of membrane and pigments, more tillers, and higher grain weight, and grain yield of wheat. Additionally, grain yield was negatively correlated with transpiration rate, stomatal conductance, internal CO2 concentration, and membrane leakage. In conclusion, a high dose rate of N under high temperatures during vegetative growth could alleviate the magnitude of penalties to grain yield and enhance the potential of wheat crops to withstand heat-induced detrimental effects. The journal offers free, immediate, and unrestricted access to peer-reviewed research and scholarly work. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. License - Articles published in Notulae Botanicae Horti Agrobotanici Cluj-Napoca are Open-Access, distributed under the terms and conditions of the Creative Commons Attribution (CC BY 4.0) License.
Amelioration of neurotoxicity induced by esfenvalerate: impact of Cyperus rotundus L. tuber extract
(Springer Science and Business Media Deutschland GmbH, 11/07/2020) Hussein, J.S; Medhat, D; Abdel-Latif, Y; Morsy, S; Gaafar, A.A; Ibrahim, E.A; Al-kashef, A.S; Nooman, M.U
The main objective of this current study was to assess the protective role of Cyperus rotundus L. (CR) extract against oxidative stress, neurotoxicity, and inflammation induced by esfenvalerate in rats. The total phenol (TP) and total tannins (TT) were estimated by Folin ciocalteu and total flavonoids were evaluated by aluminum chloride methods. The methanol: acetone: H2O with ratio 2:2:1 extract of C. rotundus tubers was determined antioxidant activity by DPPH, ABTS•+scavenging activities, and ferrous chelating, reducing power activities assays. Antioxidant activities of C. rotundus tuber extract exhibited 224.25, 191.47, and 218.77 μg/ml against 2,2-diphenyl-1-picrylhydrazyl (DPPH•), and 2,2-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS•) radicals and Fe2+-chelating, respectively expressed as IC50 while reducing power showed 119.88 μg/ml expressed as EC50. C. rotundus tuber extract’ analysis showed a presence of several phenolic and flavonoid compounds identified by HPLC. Albino Wistar rats were divided into normal control, C. rotundus alone treated esfenvalerate, and treated (Esfenvalerate + CR) groups. The dose of C. rotundus extract was100 mg /kg BW, while the dose of esfenvalerate was 0.533 mg/kg BW orally. Administration of esfenvalerate decreased the levels of brain reduced glutathione (GSH), and paraoxnase-1(PON-1), and decreased acetylcholinesterase activity along with increasing the levels of brain malondialdehyde (MDA) and nitric oxide (NO), furthermore, increased serum tumor necrosis factor-alpha (TNF-α), adiponectin, and lipocalin-2. On the other hand, treatment with C. rotundus extract significantly showed a protective effect against esfenvalerate by ameliorating levels of antioxidant enzymes, acetylcholine esterase, and inflammatory markers. The present study elicited a prophylactic effect of C. rotundus against neural damage induced by esfenvalerate in experimental rats. © 2020, Springer-Verlag London Ltd., part of Springer Nature
Analysis of paracetamol, pseudoephedrine and cetirizine in Allercet Cold® capsules using spectrophotometric techniques
(Springer, 2018) H. Youssef, Souha; Abdel-Monem Hegazy, Maha
Paracetamol (PAR), Pseudoephedrine hydrochloride (PSE) and cetirizine dihydrochloride (CET) is a ternary mixture that composes tablets which are popular for the relief of flu in Egypt. The spectra of the drugs were overlapped and no spectrophotometric methods were reported to resolve the mixture. This research proposes four spectrophotometric methods that are efficient and require water only as a solvent. The first method was ratio subtraction-ratio difference method (RSDM) where PAR was initially removed from the mixture by ratio subtraction and determined at 292.4 nm, then PSE and CET were quantified by subtracting the amplitudes of their ratio spectra between 257.0 and 230.0 nm for PSE and between 228.0 and 257.0 nm for CET. The second method was derivative ratio spectra—zero crossing (DRZC) which was based on determining both PSE and CET from the zero-crossing points of the first and third derivative of their ratio spectra at 252.0 and 237.0 nm, respectively while PAR was determined using its first derivative at 292.4 nm. Moreover, the ternary mixture was resolved using successive derivative ratio (SDR) method where PAR, PSE and CET were determined at 310.2, 257.0 and 242.4 nm, respectively. The fourth proposed method was pure component contribution algorithm (PCCA) which was applied to quantify the drugs at their λmax. Recovery percentages for RSDM were 100.7 ± 1.890, 99.69 ± 0.8400 and 99.38 ± 1.550; DRZC were 101.8 ± 0.8600, 99.04 ± 1.200 and 98.95 ± 1.300; SDR were 101.9 ± 1.060, 99.59 ± 1.010 and 100.2 ± 0.6300; PCCA were 101.6 ± 1.240, 99.10 ± 0.5400 and 100.4 ± 1.800 for PAR, PSE and BRM; respectively. The suggested methods were effectively applied to analyze laboratory prepared mixtures and their combined dosage form.
Angiokinase Inhibition of VEGFR-2, PDGFR and FGFR and Cell Growth Inhibition in Lung Cancer: Design, Synthesis, Biological Evaluation and Molecular Docking of Novel Azaheterocyclic Coumarin Derivatives
(Elsevier, 07/09/2021) Ahmed, Eman Y; Elserwy, Weam S; El-Mansy, Mohamed F; Serry, Aya M; Salem, Abdelrahman M; Abdou, Andrew M; Abdelrahman, Basel A; El-Sayed, Kenzi H; Abd Elaziz, Moaaz R
The present work represents the design and synthesis of some azaheterocyclic coumarin derivatives which are evaluated as anti-lung cancer agents. Ten out of the twenty azaheterocyclic compounds showed superior activity than the standard drug staurosporine against non-small cell lung cancer (A549). Representing the four different azaheterocyclic series, compounds 4a, 5d, 6e, and 7d, which demonstrated IC50s of 2.38, 2.39, 1.05 and 3.98 µM, respectively, each exhibiting the best cytotoxicity in its group, were selected for further assessment of their toxicity on normal lung cells (WI-38). Compound 4a was selected for further investigations because it remarkably revealed less cytotoxicity (IC50=53.76 µM) than 7d (IC50=19.95 µM) on (WI-38) compared to staurosporine (IC50=24.41 µM). 4a was assessed for its ability to inhibit the angiokinases VEGFR-2, PDGFR, FGFR and the growth factor EGFR, remarkably it showed better VEGFR-2, PDGFR, FGFR inhibition than the reference drugs used and exhibited as well noticeable EGFR inhibition. Going further, 4a was capable of arresting the cell cycle at pre-G1 phase and S phase and inducing apoptosis. Moreover, the capability of the target 4a to interact with the key amino acids of VEGFR-2 binding site was detected by molecular docking. Finally, the in silico physicochemical properties of 4a were studied.
Anti-apoptotic and antioxidant effects of melatonin protect spleen of whole body gamma-irradiated male Sprague-dawleny rats
(IJRR-IRANIAN JOURNAL RADIATION RES, NO 29, 4TH FL, CHAMRAN MEDICAL BLDG, PARVANEH ST, ALE-AHMAD HWY, TEHRAN, 00000, IRAN, 2021-10) Farid, A; El-Dewak, M; Safwat, Gehan; Diab, Ayman
Background: Spleen is the largest lymphatic organ that is seriously affected during irradiation. Radiation exposure reduces both of spleen size and weight; that in turn decreases the numbers of immune cells. Melatonin is an effective free radicals scavenger. Therefore, this study aimed to evaluate the effects of melatonin on both blood and spleen of whole body gamma-irradiated male Sprague dawley rats. Materials and methods: Animals were intraperitoneally injected with 100 mg/kg melatonin prior to radiation exposure by 30 minutes. Experimental groups were group I: control rats, group II: irradiated rats, group III: melatonin administrated unirradiated rats and group IV: melatonin administrated irradiated rats. Blood and spleen samples were collected 24 hours post irradiation for biochemical, immunological and blastogenesis measurements. Apoptosis, pro- and anti-apoptotic proteins of spleen cells were measured by flow cytometry techniques. Results: Melatonin significantly upregulated the activities of superoxide dismutase (SOD), glutathione (GSH) and catalase (CAT); and reduced malondialdehyde (MDA). It down regulated the expression of pro-apoptotic proteins (p53, Bax, caspase -3 and caspase-8) and up regulated the expression of anti-apoptotic protein Bcl-2 in spleen cells; that in turn reduced the radiation-induced apoptosis. Levels of pro-inflammatory cytokines (TNF-alpha, IFN-gamma and IL-1 beta) were significantly reduced in group IV. Blastogenesis assay showed that melatonin protects PBMC and spleen B lymphocytes and stabilized their proliferation. Conclusion: Melatonin administration prior to whole body gamma-radiation successfully protected rat's spleen from the consequences of radiation exposure. This was due to its free radicle scavenger nature, its reduction of lipid peroxidation and its anti-apoptotic effects.
Anti-cancer Effect of Hyoscyamus muticus Extract via Its Activation of Fas/FasL-ASK1-p38 Pathway
(Korean Society for Biotechnology and Bioengineering, 2022-11) Abd El-Hafeez, Amer Ali; Marzouk, Hala Mohamed M; Abdelhamid, Mohamed A. A; Khalifa, Hazim O; Hasanin, Tamer H. A; Habib, Ahmed G. K; Abdelwahed, Fatma Mahmoud; Barakat, Fatma M; Bastawy, Eslam M; Abdelghani, Eman M. B; Ozawa, Toru Hosoi, Koichiro; Aref, Ahmed M; Fujimura, Takashi; Ibrahim, Ahmed R. N; Abdelmoniem, Aalaa S. O; Elghazawy, Hagar; Ghosh, Pradipta; Kawamoto, Seiji; Pil Pack, Seung
flow cytometric analysis, knockdown of ASK1, and reactive oxygen species (ROS) production were evaluated to clarify the mechanism of action. Phytochemical screening confirmed the presence of wide range of phytoconstituents. Hyoscyamus muticus methanolic extracts (HMME) showed the highest anti-cancer activities against leukemia, breast, renal, and prostate cancers as compared to ethanol and aqueous extracts. Specifically, HMME exerted cytotoxic effect against the MDA-MB-231 and MDA-MB-468 triple-negative breast cancer (TNBC) cell lines with IC50 values of 8.75 and 7.25 μg/mL, respectively. Mechanistically, DAPI staining and flow cytometric analysis revealed that HMME induces apoptosis via the death receptor, FAS, but not the mitochondrial pathway. Moreover, ASK1 and p38 were rapidly activated in response to HMME, and knockdown of ASK1 by a small interference of RNA specific to Ask1 attenuated p38 and caspase-3 activation and suppressed apoptosis, implying that HMME-induced apoptosis relies on the ASK1-p38-caspase-3 pathway. Furthermore, we confirmed that cellular ROS generation was a critical mediator in HMME-induced apoptosis because the ROS- scavenger N-acetyl cysteine significantly decreased the phosphorylation of ASK1 and HMME-induced apoptosis. Our results confirmed HMME cytotoxic effects in TNBCs via ROS-dependent activation of the Fas/FasL-ASK1-p38 axis.
Anti-Cryptosporidium oocysts polyclonal antibodies for cryptosporidiosis diagnosis and protection
(SpringerOpen, 2023-11) Farid, Alyaa; Aiad, Silvia; Safwat, Gehan
Cryptosporidiosis is an intestinal infection that is triggered by the protozoan parasite Cryptosporidium spp. Crypto- sporidium oocysts can spread from one host to another either through direct contact with infected hosts’ faeces or through indirect means (consumption of contaminated water or food). Signifcant numbers of oocysts are pro- duced as a result of the rapid growth of the parasite within the infected hosts. For proper care of cryptosporidiosis, a laboratory diagnosis is necessary. Therefore, this study aimed to produce anti-Cryptosporidium parvum (C. parvum) oocyst immunoglobulin (Ig)G polyclonal antibodies (pAbs). The produced pAbs were used in the detection of C. parvum oocysts antigens in stool and serum samples of infected calves. Moreover, pAbs were tested in protection of balb-c male mice from cryptosporidiosis infection. C. parvum oocysts were used in the preparation of antigens to be used in the immunization of New Zealand white rabbits. pAb was purifed by ammonium sulphate precipitation method, caprylic acid purifcation method and diethylaminoethyl (DEAE) anion exchange chromatographic method. Sandwich enzyme-linked immunosorbent assay (ELISA) (using prepared pAb) scored higher sensitivity (85% and 95% for serum and stool samples) than that (80%) of microscopic examination of stool samples. Moreover, pAb signif- cantly reduced the oocysts shedding, decreased infammatory cytokines and enhanced the loss in the body weight of protected animals. The prepared pAb succeeded in the diagnosis of cryptosporidiosis in calves with high sensitiv- ity either in the serum or stool samples. Our results indicated the usefulness of using the prepared pAb in protection against cryptosporidiosis.

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