LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 198

Search options

  1. Article: Synthesis and Evaluation of Thioamide and Bromo Derivatives of 1,3-Diphenylpropane-1,3-dione as 5α-Reductase Inhibitors.

    Fouad, Marwa M / Farag, Ahmad M / Ragab, Eman A

    Current organic synthesis

    2023  

    Abstract: Background: 1,3-Diphenylpropane-1,3-dione (1) is an acetylacetone β-diketone in which both of the methyl groups have been replaced with phenyl groups. It is a component of licorice root extract (Glycyrrhiza glabra) and has anti-mutagenic and anti-cancer ...

    Abstract Background: 1,3-Diphenylpropane-1,3-dione (1) is an acetylacetone β-diketone in which both of the methyl groups have been replaced with phenyl groups. It is a component of licorice root extract (Glycyrrhiza glabra) and has anti-mutagenic and anti-cancer properties. It functions as a metabolite, an anti-mutagen, and an anti-neoplastic agent. It is an aromatic ketone and a β-diketone. 1,3-Diphenylpropane-1,3-dione (1) is primarily used in PVC hard and soft materials, including plates, films, profiles, pipes, and fittings.
    Objectives: This research aims to examine the utility of 1,3-diphenylpropane-1,3-dione (1) for the synthesis of a variety of new heterocyclic compounds, such as thioamide, thiazolidine, thiophene-2-carbonitrile, phenylthiazole, thiadiazole-2-carboxylate, 1,3,4-thiadiazole derivatives, 2-bromo-1,3-diphenylpropane-1,3-dione, new substituted benzo[1,4]thiazines, phenylquinoxalines, and imidazo[1,2-b][1,2,4]triazole derivatives of potential biological activity Methods: 1,3-Diphenylpropane-1,3-dione (1) was used as a starting compound for the synthesis of 3-oxo-N,3-diphenyl-2-(phenylcarbonyl)propanethioamide (3) and 2-bromo-1,3-diphenylpropane-1,3-dione (25), which can be used for further preparations. The 5α-reductase inhibitor activity of some of the synthesized compounds was also tested in vivo; the ED50 and LD50 data were established, Results: Using IR, 1H-NMR, mass spectroscopy, and elemental analysis, the structures of all produced compounds were elucidated. Some of these prepared compounds were reported as 5α-reductase inhibitors.
    Conclusion: New heterocyclic compounds can be formed via 1,3-diphenylpropane-1,3-dione (1), and some of these compounds can act as 5α-reductase inhibitors.
    Language English
    Publishing date 2023-06-08
    Publishing country United Arab Emirates
    Document type Journal Article
    ISSN 1570-1794
    ISSN 1570-1794
    DOI 10.2174/1570179420666230608161444
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: In Vivo and In Vitro Assessments of the Antibacterial Potential of Chitosan-Silver Nanocomposite Against Methicillin-Resistant Staphylococcus aureus-Induced Infection in Rats.

    Hassanen, Eman I / Ragab, Eman

    Biological trace element research

    2020  Volume 199, Issue 1, Page(s) 244–257

    Abstract: Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most threatening multidrug-resistant bacteria worldwide. Owing to their efficient antimicrobial properties, nanoparticles have been widely used as an alternative approach for combating the ... ...

    Abstract Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most threatening multidrug-resistant bacteria worldwide. Owing to their efficient antimicrobial properties, nanoparticles have been widely used as an alternative approach for combating the antibiotic-resistant bacteria. Consequently, this study was designed to compare in between the bactericidal effect of low doses (5 mg/kg bwt) of nanoparticles of chitosan (Ch-NPs), silver (Ag-NPs), and chitosan-silver nanocomposites (Ch-Ag NCs) both in vitro and in vivo against experimentally chronic infection induced by methicillin-resistant Staphylococcus aureus (MRSA). The three forms of nanoparticles were tested for their in vitro antimicrobial potential against MRSA by detection of MICs and MBCs using microdilution method. In vivo, thirty-five male albino Wistar rats were used and divided into five groups (n = 7). Group l (negative control), group 2 (MRSA infected and untreated), groups 3, 4, and 5 (MRSA infected then treated with Ch-NPs, Ag-NPs, and Ch-Ag NCs respectively for 7 days). After 6 weeks, blood samples were collected then rats were euthanized to collect different organs (liver, spleen, lungs, and kidneys). Some of them were kept in 10% formalin for histopathological investigations while others used for bacterial re-isolation. Ch-Ag NCs showed the lowest MIC and MBC among the tested nanoparticles. Moreover, the highest histopathological scoring was observed in the infected and untreated group while the lowest scoring was detected in groups treated with Ch-Ag NCs in comparison with the negative control group. The highest bacterial count was noticed in the infected and untreated group followed by those treated with Ch-NPs while the lowest count was observed in group treated with Ch-Ag NCs. Depending on these results, it can be concluded that Ch-Ag NCs have a strong bactericidal effect against MRSA and may be used as alternative option to antibiotics.
    MeSH term(s) Animals ; Anti-Bacterial Agents/pharmacology ; Chitosan/pharmacology ; Male ; Metal Nanoparticles ; Methicillin-Resistant Staphylococcus aureus ; Microbial Sensitivity Tests ; Nanocomposites ; Rats ; Silver/pharmacology
    Chemical Substances Anti-Bacterial Agents ; Silver (3M4G523W1G) ; Chitosan (9012-76-4)
    Language English
    Publishing date 2020-04-18
    Publishing country United States
    Document type Journal Article
    ZDB-ID 445336-0
    ISSN 1559-0720 ; 0163-4984
    ISSN (online) 1559-0720
    ISSN 0163-4984
    DOI 10.1007/s12011-020-02143-6
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Appraisal of a newly developed ALBI-sarcopenia score as a prognostic marker in patients with hepatocellular carcinoma.

    Elsabaawy, Maha / Badran, Hanaa / Ragab, Amr / Abdelwahab, Rasha / Sayed, Eman / Afify, Sameh / Othman, Warda

    European journal of gastroenterology & hepatology

    2024  

    Abstract: Objective: This study aimed to evaluate the impact of the combined Albumin-bilirubin (ALBI)/sarcopenia score as a newly developed prognostic model for hepatocellular carcinoma (HCC), with a focus on its utility in predicting mortality.: Methods: This ...

    Abstract Objective: This study aimed to evaluate the impact of the combined Albumin-bilirubin (ALBI)/sarcopenia score as a newly developed prognostic model for hepatocellular carcinoma (HCC), with a focus on its utility in predicting mortality.
    Methods: This prospective study was conducted on HCC patients who were followed for 1 year or until death. Sarcopenia was assessed radiologically by computed tomography at the level of L3. The study consisted of two sets: a development set in which the new ALBI-sarcopenia score was created, comprising 262 HCC patients, followed by an internal validation set with 100 patients.
    Results: The development cohort primarily included males (69.5%), aged 59.6 ± 8.09 years. In patients with sarcopenia, the ALBI score was -2.03 ± 0.42 (P < 0.006), the model for end-stage liver disease (MELD) score was 11.29 ± 2.43 (P < 0.001*), and the MELD-sarcopenia score was 21.29 ± 2.43 (P < 0.001*). The distribution of barcelona clinic liver cancer (BCLC) staging was as follows: BCLC A 18 (15.9%), BCLC B 63 (55.8%) and BCLC C 32 (28.3%) (P < 0.001*), with a notable association with higher mortality (P < 0.001). Multivariate analysis identified sarcopenia and ALBI scores as independent predictors of mortality in HCC (P < 0.001*). In the development set, the ALBI-sarcopenia score successfully predicted mortality at a cutoff >-11 with an area under a curve of 0.837 (95% CI, 0.784-0.889), while in the validation set, it predicted mortality at a cutoff >-11.55 with an area under a curve of 0.842 (95% CI, 0.753-0.930).
    Conclusion: The newly introduced ALBI-sarcopenia score has demonstrated superior effectiveness in comparison to MELD-sarcopenia score, overcoming the shortcomings associated MELD score in forecasting outcomes for patients with HCC.
    Language English
    Publishing date 2024-04-17
    Publishing country England
    Document type Journal Article
    ZDB-ID 1034239-4
    ISSN 1473-5687 ; 0954-691X
    ISSN (online) 1473-5687
    ISSN 0954-691X
    DOI 10.1097/MEG.0000000000002776
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Development of green micellar HPLC-DAD method for simultaneous determination of some sulbactam combinations used in COVID-19 regimen.

    Ragab, Gamal H / Saleh, Hanaa M / Abdulla, Nermeen M / Bahgat, Eman A

    BMC chemistry

    2023  Volume 17, Issue 1, Page(s) 94

    Abstract: In a new attempt to separate some sulbactam combinations by green chemical method we came up with this research in which an ecofriendly, green, sustainable and selective method was established for separation of four antibiotics, namely, cefoperazone (CFP) ...

    Abstract In a new attempt to separate some sulbactam combinations by green chemical method we came up with this research in which an ecofriendly, green, sustainable and selective method was established for separation of four antibiotics, namely, cefoperazone (CFP), cefixime (CFX), ampicillin (AMP) and sulbactam (SLB). No organic solvents were used in the composition of the mobile phase as it was replaced by mixing two surfactants together, sodium dodecyl sulfate (SDS) and polyoxyethylene-23-lauryl ether (Brij-35). Effect of varying the concentrations of the two surfactants on chromatographic separation was studied. Optimum separation was maintained using a mobile phase consisting of 0.01 mol/L SDS, 0.03 mol/L Brij-35, 0.4% Tri-ethylamine (TEA) and pH of 2.8 adjusted by using 1 M ortho-phosphoric acid on reversed phase Isère C
    Language English
    Publishing date 2023-08-05
    Publishing country Switzerland
    Document type Journal Article
    ISSN 2661-801X
    ISSN (online) 2661-801X
    DOI 10.1186/s13065-023-01006-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Assessment of the Impact of Bacillus Probiotics, Coconut Oil and Nigella sativa Oil on Productive Performance, Economic Indicators and Carcass Characteristics of cobb 500 Broiler Chickens

    Eman M. Ragab / Sanad T. Atallah / Eman EL-KTANY / Elrefaey Aboelftouh

    Journal of Advanced Veterinary Research, Vol 13, Iss

    2023  Volume 8

    Abstract: This experiment was conducted to evaluate the impact of dietary inclusion of probiotic mixture (B. subtilis and B. lieniformis), Coconut oil (CO) and Nigella sativa oil (NSO) or Black cumin oil (BCO) on productive performance, economic efficiency ... ...

    Abstract This experiment was conducted to evaluate the impact of dietary inclusion of probiotic mixture (B. subtilis and B. lieniformis), Coconut oil (CO) and Nigella sativa oil (NSO) or Black cumin oil (BCO) on productive performance, economic efficiency indicators and carcass characteristics of broiler chicks. For this purpose, 140 day-old broiler chicks (Cobb500) were weighed individually and assigned randomly into four treatments (T) 35 chicks in each, divided into five replicates of 7 chicks in each. (T1) control fed a basal diet, (T2) fed a basal diet + Coconut oil (10 ml/kg feed); (T3) fed a basal diet + Nigella sativa oil (1ml/kg feed) and (T4) fed a basal diet + bacillus probiotics (1g/kg of diet). Results clarified that CO, NSO and probiotic mixture groups improved significantly (P>0.05) the productive parameters (final body weight (FBW), body weight gain (BWG) and feed conversion ratio (FCR)) compared to control group. CO-based diet group recorded the highest BW and BWG, while probiotics mixture group was superior in feed intake value. The lowest FCR value was recorded in CO and NSO-based diet groups. The best economic efficiency measures were scored in CO followed by NSO then bacillus probiotics. Also, there are significant differences (P<0.05) among dietary treatments on relative weight of carcass, inner organs and immune organs. Diet containing NSO acquired the highest dressing percent (73.50%), while the highest relative weight of (heart, proventriculus, thymus, spleen %) was registered in broilers fed probiotics mixture diet. In conclusion CO, NSO, probiotics mixture-based diet has a beneficial influence on productive performance and economic indicators, thus highly recommended utilizing those supplements as natural feed additives.
    Keywords Bacillus probiotics ; Coconut oil ; Nigella sativa oil ; Productive performance ; Economic indicators ; Carcass characteristics ; Veterinary medicine ; SF600-1100
    Subject code 590
    Language English
    Publishing date 2023-09-01T00:00:00Z
    Publisher Assiut University
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  6. Article ; Online: Effects of antioxidant vitamins (A, D, E) and trace elements (Cu, Mn, Se, Zn) administration on gene expression, metabolic, antioxidants and immunological profiles during transition period in dromedary camels.

    El-Sayed, Ahmed / Ebissy, Eman / Mohamed, Ragab / Ateya, Ahmed

    BMC veterinary research

    2024  Volume 20, Issue 1, Page(s) 101

    Abstract: Background: Nutrition has a primary role for optimum expression of genetic potential, and most of the farmers have limited resources of green fodder. Hence, a fat-soluble vitamin, especially vitamin A and E and trace elements remained most critical in ... ...

    Abstract Background: Nutrition has a primary role for optimum expression of genetic potential, and most of the farmers have limited resources of green fodder. Hence, a fat-soluble vitamin, especially vitamin A and E and trace elements remained most critical in the animal's ration and affects their productive and reproductive performance adversely. Animals cannot be able to produce these vitamins in their bodies; hence, an exogenous regular supply is needed to fulfil the physiological needs and to maintain high production performance. This study elucidated effects of antioxidant vitamins (A, D, E) and trace elements (Cu, Mn, Se, Zn) administration on gene expression, metabolic, antioxidants and immunological parameters in dromedary camels during transition period.
    Results: At 0 day, there were no appreciable differences in the expression patterns of the metabolic (IGF-I, ACACA, SCD, FASN, LPL, and BTN1A1) genes between the control and treatment groups, despite lower levels. A substantial variation in the mRNA levels of SOD1, SOD3, PRDX2, PRDX3, PRDX4, PRDX6, and AhpC/TSA was observed between the control and treatment groups, according to the antioxidant markers. In comparison to the control group, the treatment group displayed a significant up-regulation at 0 and 21 days. The treatment and control groups exhibited substantial differences in the mRNA values of IL-1α, IL-1β, IL-6, and TNFα, as indicated by immunological markers. In comparison to the control group, there was a noticeable down-regulation in the treatment group at 0 and + 21 days. But IL10 produced the opposite pattern. No significant difference was observed in glucose, cholesterol, triglyceride, HDL, total protein, NEFA, BHBA, cortisol and IGF-1 levels between control and treatment group. The activity of serum GPx, SOD and TAC was significantly affected by time and treatment x time in supplemented groups as compared with control group. IL-1, IL-1, IL-6, and TNF were noticeably greater in the control group and lower in the treatment group. Additionally, in all groups, the concentration of all pro-inflammatory cytokines peaked on the day of delivery and its lowest levels showed on day 21 following calving. The IL-10 level was at its peak 21 days prior to calving and was lowest on calving day.
    Conclusion: The results demonstrated a beneficial effect of antioxidant vitamins and trace elements on the metabolic, antioxidant and immunological markers in dromedary camels throughout their transition period.
    MeSH term(s) Animals ; Trace Elements/pharmacology ; Antioxidants/metabolism ; Vitamins/pharmacology ; Camelus ; Vitamin A/pharmacology ; Interleukin-6 ; Vitamin K ; Zinc ; RNA, Messenger ; Gene Expression ; Interleukin-1
    Chemical Substances Trace Elements ; Antioxidants ; Vitamins ; Vitamin A (11103-57-4) ; Interleukin-6 ; Vitamin K (12001-79-5) ; Zinc (J41CSQ7QDS) ; RNA, Messenger ; Interleukin-1
    Language English
    Publishing date 2024-03-13
    Publishing country England
    Document type Journal Article
    ZDB-ID 2191675-5
    ISSN 1746-6148 ; 1746-6148
    ISSN (online) 1746-6148
    ISSN 1746-6148
    DOI 10.1186/s12917-024-03959-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Green Spectrophotometric Determination of Two Cephalosporin Drugs Used in COVID-19 Regimen Through Silver Nanoparticle Synthesis.

    Saleh, Hanaa M / Ragab, Gamal H / Abdulla, Nermeen M / Bahgat, Eman A

    Journal of AOAC International

    2023  Volume 106, Issue 3, Page(s) 613–623

    Abstract: Background: Cefixime trihydrate (CFX) and cefuroxime axetil (CFU) are antibacterial drugs. They are widely used in the treatment of bacterial infection and recently in COVID-19 treatment.: Objective: In this article, the two antibacterial drugs, CFX ... ...

    Abstract Background: Cefixime trihydrate (CFX) and cefuroxime axetil (CFU) are antibacterial drugs. They are widely used in the treatment of bacterial infection and recently in COVID-19 treatment.
    Objective: In this article, the two antibacterial drugs, CFX and CFU, were determined by a new simple, sensitive, effective, and green spectrophotometric method via reaction with silver nitrate (AgNO3).
    Methods: The reaction was based on reduction of AgNO3 by the cited drugs to silver nanoparticles (Ag-NPs) in the presence of polyvinylpyrrolidine (PVP) as stabilizing agent. Very intense surface plasmon resonance peaks were obtained at 435 nm for CFX and CFU that allow quantitative determination of the drugs.
    Results: The calibration curves were linear with concentration ranges of 0.2-1.4 μg/mL and 0.3-2.1 μg/mL for CFX and CFU, respectively. Validation of the proposed method has been done according to ICH (International Conference of Harmonization) guidelines; the method was verified on the Green Analytical Procedure Index and Analytical Greenness metric approach (AGREE) in regard to its greenness and was found to be an excellent green alternative method.
    Conclusion: A very sensitive and green spectrophotometric method was developed for determination of CFX and CFU in pure and dosage form.
    Highlight: The developed method not previously reported for simultaneous determination of CFX and CFU.
    MeSH term(s) Humans ; Cephalosporins ; Metal Nanoparticles ; COVID-19 Drug Treatment ; COVID-19 ; Silver ; Anti-Bacterial Agents ; Monobactams
    Chemical Substances Cephalosporins ; Silver (3M4G523W1G) ; Anti-Bacterial Agents ; Monobactams
    Language English
    Publishing date 2023-01-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 1103149-9
    ISSN 1944-7922 ; 1060-3271
    ISSN (online) 1944-7922
    ISSN 1060-3271
    DOI 10.1093/jaoacint/qsad014
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: Infrapatellar fat pad area on knee MRI

    Eman Ragab / Dena Serag

    The Egyptian Journal of Radiology and Nuclear Medicine, Vol 52, Iss 1, Pp 1-

    does it correlate with the extent of knee osteoarthritis?

    2021  Volume 9

    Abstract: Abstract Background Osteoarthritis (OA) of the knee joint is a common cause of chronic disability in older adults. During the past 10 years, the infrapatellar fat pad (IPFP) has emerged as a new player in the pathogenesis of knee OA. Its exact role in ... ...

    Abstract Abstract Background Osteoarthritis (OA) of the knee joint is a common cause of chronic disability in older adults. During the past 10 years, the infrapatellar fat pad (IPFP) has emerged as a new player in the pathogenesis of knee OA. Its exact role in the pathogenesis of knee OA remains uncertain. While many studies focused on the detrimental effect of the chemical mediators released by IPFP and their role in the accentuation of the development of OA, only few studies elucidated the beneficial effect of IPFP maximal area as a local shock absorber protecting the adjacent articular structures from progressive damage. The aim of this study was to evaluate the relation between the IPFP maximal area and the prevalence of OA manifestations. We also studied the relation between the subcutaneous (SC) fat thicknesses on the medial aspect of the knee as a surrogate marker of body obesity and the IPFP area. Results A total of 216 knee scans for 188 adult patients (64 males and 124 females) who met the inclusion criteria were examined. They were between 45 and 66 years (mean 52.5 years). The mean IPFP area for all patients was 6.9 cm2 (± 1.6 SD) (ranged from 4.5 to 11 cm2). After adjustment for potential confounders, there was a significant negative association between IPFP area and radiographic manifestations of OA (osteophites, joint space narrowing, and grade of OA) (P value < 0.001 for each), as well as MRI manifestations of OA (cartilage defects and subchondral bone marrow lesions) (P value < 0.001 and < 0.003, respectively). There was a negative but non-significant association between IPFP area and SC fat thickness. Conclusion In our study, we found supportive evidence that IPFP maximal area is associated with fewer osteoarthritic knee changes and less cartilage damage, suggesting that it plays a protective role against the development and progression of OA. Further large-scale clinical studies are awaited to confirm the obtained results. Based on our findings, it would be recommended to avoid IPFP resection ...
    Keywords Infrapatellar fat pad ; Knee osteoarthritis ; MRI ; Medical physics. Medical radiology. Nuclear medicine ; R895-920
    Subject code 796
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher SpringerOpen
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  9. Article: Ecoepidemiology and Potential Transmission of

    Ismail, Eman M / Kadry, Mona / Elshafiee, Esraa A / Ragab, Eman / Morsy, Eman A / Rizk, Omar / Zaki, Manal M

    Pathogens (Basel, Switzerland)

    2021  Volume 10, Issue 2

    Abstract: Cholera is a negative public health event caused ... ...

    Abstract Cholera is a negative public health event caused by
    Language English
    Publishing date 2021-02-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2695572-6
    ISSN 2076-0817
    ISSN 2076-0817
    DOI 10.3390/pathogens10020190
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Synthesis and Anti-Breast Cancer Potency of Mono- and Bis-(pyrazolyl[1,2,4]triazolo[3,4-

    Salem, Mostafa E / Mahrous, Esraa M / Ragab, Eman A / Nafie, Mohamed S / Dawood, Kamal M

    ACS omega

    2023  Volume 8, Issue 38, Page(s) 35359–35369

    Abstract: The target mono- and bis-(6-pyrazolyltriazolo-thiadiazine) ... ...

    Abstract The target mono- and bis-(6-pyrazolyltriazolo-thiadiazine) derivatives
    Language English
    Publishing date 2023-09-11
    Publishing country United States
    Document type Journal Article
    ISSN 2470-1343
    ISSN (online) 2470-1343
    DOI 10.1021/acsomega.3c05309
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top