48 results on '"Alamoudi, S"'
Search Results
2. Shared Decision-Making: A Cross-Sectional Study Assessing Patients Awareness and Preferences in Saudi Arabia
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Aljaffary A, Alsheddi F, Alzahrani R, Alamoudi S, Aljuwair M, Alrawiai S, Aljabri D, Althumairi A, Hariri B, and Alumran A
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awareness ,preferences ,patients ,shared decision-making ,saudi arabia ,treatment plan. ,Medicine (General) ,R5-920 - Abstract
Afnan Aljaffary, Fatimah Alsheddi, Raghad Alzahrani, Somayyah Alamoudi, Mona Aljuwair, Sumaiah Alrawiai, Duaa Aljabri, Arwa Althumairi, Bayan Hariri, Arwa Alumran Department of Health Information Management & Technology, College of Public Health, Imam Abdulrahman Bin Faisal University, Dammam, Saudi ArabiaCorrespondence: Afnan Aljaffary, Email aaljaffari@iau.edu.saBackground and Aim: Shared decision-making (SDM) has become broadly accepted during the consultation, especially when there are many options of treatment. This study aims to assess patients’ levels of awareness and preferences of SDM in Saudi Arabia.Methods: This is a cross-sectional study targeting patients in Saudi Arabia. Two validated questionnaires were used, the first validated questionnaire focuses on measuring knowledge, attitude and experiences of shared-decision making. The second questionnaire is the the Autonomy‐Preference‐Index focusing on patients’ preferences for being involved in SDM. Relevant items to the study aim were chosen and translated into Arabic. Psychometric testing was conducted for Arabic and English versions and tested for content and face validity. The questionnaire administered online via social media channels, between February 2021 and May 2021. A total of 411 respondents completed the questionnaire.Results: The findings showed a positive association between awareness and preferences of SDM among patients in Saudi Arabia. In the awareness of the SDM domain, females reported higher scores than male participants (t = − 4.504, P < 0.001). Saudis reported higher scores in their awareness of SDM than non-Saudis (t = 2.569, P = 0.011). Participants without health insurance reported higher scores in their awareness of SDM than those insured (t = − 2.130, P = 0.034). Participants with degree have higher knowledge levels than participants with no degree (f = 10.034, P < 0.001). Females reported higher scores in their preferences of SDM than the male (t = − 2.099, P = 0.036). Participants who visited private health-care settings in their last clinical encounter reported higher preferences of SDM than participants who received care in other settings (f = 2.653, P = 0.048).Conclusion: The study concludes that the more aware a patient is, the more likely they prefer SDM practice. This finding can support health-care policymakers in developing SDM policies that enhance patient-centered care.Keywords: awareness, preferences, patients, shared decision-making, Saudi Arabia, treatment plan
- Published
- 2022
3. A Systematic Review of Screw versus Cement-Retained Fixed Implant Supported Reconstructions
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Hamed MT, Abdullah Mously H, Khalid Alamoudi S, Hossam Hashem AB, and Hussein Naguib G
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dental implant ,dental implant reconstructions ,screw retained fixed implant ,reversible. ,Dentistry ,RK1-715 - Abstract
Mohamed Tharwat Hamed, 1 Hisham Abdullah Mously, 2 Saeed Khalid Alamoudi, 3 Abou Bakr Hossam Hashem, 4 Ghada Hussein Naguib 5 1Department of Oral & Maxillofacial Prosthodontics, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia, Department of Fixed Prosthodontics, Cairo University Faculty of Dentistry, Cairo, Egypt; 2Department of Oral & Maxillofacial Prosthodontics, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia; 3King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia; 4 Dental Department, Research Institute of Ophthalmology, Giza, Egypt; 5Department of Restorative Dentistry, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi Arabia, Department of Oral Biology, Cairo University Faculty of Dentistry, Cairo, EgyptCorrespondence: Mohamed Tharwat HamedDepartment of Oral & Maxillofacial Prosthodontics, King Abdulaziz University Faculty of Dentistry, Jeddah, Saudi ArabiaEmail mohsarwat62@gmail.comPurpose: Dental implant is an effective and standardized treatment procedure in the healthcare setting. This study presents a comparison of dental implant reconstruction using screw and cement. It explicitly reviews the studies concerning cement and screws dental implants to determine the efficiency of the two.Patients and Methods: A systematic review was conducted by comprehensively searching electronic literature. The keywords, such as “Screw versus Cement Retained Fixed Implant Supported Reconstructions,” “Screw Retained Fixed Implant.” “Cement Implant” and “Dental Implant” were used for article searching. Twelve studies were included based on the determined inclusion and exclusion criteria.Results: No significant difference was found between the screw-retained and cemented retained implant supported reconstructions. Dental implants are associated with complications leading to implant failure based on the type of restoration that is being used; cement-retained restoration and screw-retained restoration. The treatment selection must be based on the significance criteria and the tooth condition.Conclusion: Screw-retained implant-supported reconstructions were found to pose less biological and technological complications. Retention of the tooth is more stable and functional when implantation is selected based on the efficiency of a treatment procedure.Keywords: dental implant, dental implant reconstructions, screw retained fixed implant, reversible
- Published
- 2020
4. Averaged dynamics of soliton molecules in dispersion-managed optical fibers
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Alamoudi, S. M., Khawaja, U. Al, and Baizakov, B. B.
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Nonlinear Sciences - Pattern Formation and Solitons - Abstract
The existence regimes and dynamics of soliton molecules in dispersion-managed (DM) optical fibers have been studied. Initially we develop a variational approximation (VA) for description of periodic dynamics of a soliton molecule within each unit cell of the dispersion map. The obtained system of coupled equations for the pulse width and chirp allows to find the parameters of DM soliton molecules for the given dispersion map and pulse energy. Then by means of a scaling transformation and averaging procedure we reduce the original nonlinear Schr\"odinger equation (NLSE) with piecewise-constant periodic dispersion to its counterpart with constant coefficients and additional parabolic potential. The obtained averaged NLSE with expulsive potential can explain the essential features of solitons and soliton molecules in DM fibers related to their energy loss during propagation. Also, the model of averaged NLSE predicts the instability of the temporal position of the soliton, which may lead to difficulty in holding the pulse in the middle of its time slot. All numerical simulations are performed using the parameters of the existing DM fiber setup, and illustrated via pertinent examples., Comment: 10 pages, 7 eps figures
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- 2013
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5. Nonequilibrium relaxation of Bose-Einstein condensates: Real-time equations of motion and Ward identities
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Boyanovsky, D., Wang, S. -Y., Lee, D. -S., Yu, H. -L., and Alamoudi, S. M.
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Condensed Matter ,High Energy Physics - Phenomenology ,High Energy Physics - Theory - Abstract
We present a field-theoretical method to obtain consistently the equations of motion for small amplitude condensate perturbations in a homogeneous Bose-condensed gas directly in real time. It is based on linear response, and combines the Schwinger-Keldysh formulation of nonequilibrium quantum field theory with the Nambu-Gorkov formalism of quasiparticle excitations in the condensed phase and the tadpole method in quantum field theory. This method leads to causal equations of motion that allow to study the nonequilibrium evolution as an initial value problem. It also allows to extract directly the Ward identities, which are a consequence of the underlying gauge symmetry and which in equilibrium lead to the Hugenholtz-Pines theorem. An explicit one-loop calculation of the equations of motion beyond the Hartree-Fock- Bogoliubov approximation reveals that the nonlocal, absorptive contributions to the self-energies corresponding to the Beliaev and Landau damping processes are necessary to fulfill the Ward identities \emph{in} or \emph{out} of equilibrium. It is argued that a consistent implementation at low temperatures must be based on the loop expansion, which is shown to fulfill the Ward identities order by order in perturbation theory., Comment: Latex (elsart.cls), 41 pages, 4 eps figs, to appear in Ann. Phys
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- 2001
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6. Dynamical Viscosity of Nucleating Bubbles
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Alamoudi, S. M., Barci, D. G., Boyanovsky, D., de Carvalho, C. A. A., Fraga, E. S., Joras, S. E., and Takakura, F. I.
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High Energy Physics - Phenomenology ,Condensed Matter ,Nuclear Theory - Abstract
We study the viscosity corrections to the growth rate of nucleating bubbles in a first order phase transition in scalar field theory. We obtain the non-equilibrium equation of motion of the coordinate that describes small departures from the critical bubble and extract the growth rate consistently in weak coupling and in the thin wall limit. Viscosity effects arise from the interaction of this coordinate with the stable quantum and thermal fluctuations around a critical bubble. In the case of 1+1 dimensions we provide an estimate for the growth rate that depends on the details of the free energy functional. In 3+1 dimensions we recognize robust features that are a direct consequence of the thin wall approximation and give the leading viscosity corrections.These are long-wavelength hydrodynamic fluctuations that describe surface waves, quasi-Goldstone modes which are related to ripples on interfaces in phase ordered Ising-like systems. We discuss the applicability of our results to describe the growth rate of hadron bubbles in a quark-hadron first order transition., Comment: 40 pages, 4 figures, revtex, minor changes, to be published in Phys. Rev. D
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- 1999
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7. Quantum kinetics and thermalization in a particle bath model
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Alamoudi, S. M., Boyanovsky, D., and de Vega, H. J.
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Condensed Matter - Abstract
We study the dynamics of relaxation and thermalization in an exactly solvable model of a particle interacting with a harmonic oscillator bath. Our goal is to understand the effects of non-Markovian processes on the relaxational dynamics and to compare the exact evolution of the distribution function with approximate Markovian and Non-Markovian quantum kinetics. There are two different cases that are studied in detail: i) a quasiparticle (resonance) when the renormalized frequency of the particle is above the frequency threshold of the bath and ii) a stable renormalized `particle' state below this threshold. The time evolution of the occupation number for the particle is evaluated exactly using different approaches that yield to complementary insights. The exact solution allows us to investigate the concept of the formation time of a quasiparticle and to study the difference between the relaxation of the distribution of bare particles and that of quasiparticles. We derive a non-Markovian quantum kinetic equation which resums the perturbative series and includes off-shell effects. A Markovian approximation that includes off-shell contributions and the usual Boltzmann equation (energy conserving) are obtained from the quantum kinetic equation in the limit of wide separation of time scales upon different coarse-graining assumptions. The relaxational dynamics predicted by the non-Markovian, Markovian and Boltzmann approximations are compared to the exact result. The Boltzmann approach is seen to fail in the case of wide resonances and when threshold and renormalization effects are important., Comment: 39 pages, RevTex, 14 figures (13 eps figures)
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- 1998
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8. A MULTICENTER RETROSPECTIVE STUDY TO UNDERSTAND THE CLINICAL CHARACTERISTICS FOR PATIENTS WITH CHRONIC LYMPHOCYTIC LEUKEMIA: INTERIM RESULTS FROM THE CREEK STUDY
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Al‐Huraiji, A., primary, Soliman, R. M., additional, Samra, M. A., additional, Alamoudi, S. M., additional, Absi, A., additional, Alshehri, H. M., additional, Bagal, B. P., additional, Buyukasik, Y., additional, Kantharaju, P., additional, Gonzalez, F. J., additional, Ishikawa, A., additional, and Alhejazi, A. Y., additional
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- 2023
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9. Quantum kinetics and thermalization in an exactly solvable model
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Alamoudi, S. M., Boyanovsky, D., de Vega, H. J., and Holman, R.
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High Energy Physics - Phenomenology - Abstract
We study the dynamics of relaxation and thermalization in an exactly solvable model with the goal of understanding the effects of off-shell processes. The focus is to compare the exact evolution of the distribution function with different approximations to the relaxational dynamics: Boltzmann, non-Markovian and Markovian quantum kinetics. The time evolution of the distribution function is evaluated exactly using two methods: time evolution of an initially prepared density matrix and by solving the Heisenberg equations of motion. There are two different cases that are studied in detail: i) no stable particle states below threshold of the bath and a quasiparticle resonance above it and ii) a stable discrete exact `particle' state below threshold. For the case of quasiparticles in the continuum (resonances) the exact quasiparticle distribution asymptotically tends to a statistical equilibrium distribution that differs from a simple Bose-Einstein form as a result of off-shell processes. In the case ii), the distribution of particles does not thermalize with the bath. We study the kinetics of thermalization and relaxation by deriving a non-Markovian quantum kinetic equation which resums the perturbative series and includes off-shell effects. A Markovian approximation that includes off-shell contributions and the usual Boltzmann equation are obtained from the quantum kinetic equation in the limit of wide separation of time scales upon different coarse-graining assumptions. The relaxational dynamics predicted by the non-Markovian, Markovian and Boltzmann approximations are compared to the exact result of the model. The Boltzmann approach is seen to fail in the case of wide resonances and when threshold and renormalization effects are important., Comment: 49 pages, LaTex, 17 figures (16 eps figures)
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- 1998
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10. Domain Walls Out of Equilibrium
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Alamoudi, S. M., Boyanovsky, D., and Takakura, F. I.
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High Energy Physics - Phenomenology ,High Energy Physics - Theory - Abstract
We study the non-equilibrium dynamics of domain walls in real time for $\phi^4$ and Sine Gordon models in 1+1 dimensions in the dilute regime. The equation of motion for the collective coordinate is obtained by integrating out the meson excitations around the domain wall to one-loop order. The real-time non-equilibrium relaxation is studied analytically and numerically to this order. The constant friction coefficient vanishes but there is dynamical friction and relaxation caused by off-shell non-Markovian effects. The validity of a Markovian description is studied in detail. The proper Langevin equation is obtained to this order, the noise is Gaussian and additive but colored. We analyze the classical and hard thermal loop contributions to the self-energy and noise kernels and show that at temperatures larger than the meson mass the hard contributions are negligible and the finite temperature contribution to the dynamics is governed by the classical soft modes of the meson bath. The long time relaxational dynamics is completely dominated by classical Landau damping resulting in that the corresponding time scales are not set by the temperature but by the meson mass. The noise correlation function and the dissipative kernel obey a generalized form of the Fluctuation-Dissipation relation., Comment: 39 pages, LaTex, 9 figures (3 EPS; 6 GIF), minor changes
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- 1997
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11. Real Time Dynamics of Soliton Diffusion
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Alamoudi, S. M., Boyanovsky, D., and Takakura, F. I.
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Condensed Matter - Abstract
We study the non-equilibrium dynamics of solitons in model Hamiltonians for Peierls dimerized quasi-one dimensional conducting polymers and commensurate charge density wave systems. The real time equation of motion for the collective coordinate of the soliton and the associated Langevin equation is found in a consistent adiabatic expansion in terms of the ratio of the optical phonon or phason frequency to the soliton mass. The equation of motion for the soliton collective coordinate allows to obtain the frequency dependent soliton conductivity. In lowest order we find that although the coefficient of static friction vanishes, there is dynamical dissipation represented by a non-Markovian dissipative kernel associated with two-phonon processes. The correlation function of the noise in the quantum Langevin equation and the dissipative kernel are related by a generalized quantum fluctuation dissipation relation. To lowest adiabatic order we find that the noise is gaussian, additive and colored. We numerically solve the equations of motion in lowest adiabatic order and compare to the Markovian approximation which is shown to fail both in the $\phi^4$ and the Sine Gordon models even at large temperatures., Comment: 44 pages, LaTex, 8 GIF figures, to be published in Phys. Rev. B
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- 1997
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12. Comparative genomics study reveals Red Sea Bacillus with characteristics associated with potential microbial cell factories (MCFs)
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Othoum, G., Prigent, S., Derouiche, A., Shi, L., Bokhari, A., Alamoudi, S., Bougouffa, S., Gao, X., Hoehndorf, R., Arold, S. T., Gojobori, T., Hirt, H., Lafi, F. F., Nielsen, J., Bajic, V. B., Mijakovic, I., and Essack, M.
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- 2019
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13. A short tale of blood, kidney and brain: BK virus encephalitis in an allogeneic stem cell transplant recipient
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Bourlon, C, Alamoudi, S, Kumar, D, Viswabandya, A, Thyagu, S, Michelis, F V, Kim, D (D-H), Lipton, J H, Messner, H A, and Deotare, U
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- 2017
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14. IN VITRO ANTIBACTERIAL, ANTIDERMATOPHYTE AND ANTICANDIDA POTENTIALS OF DIFFERENT ORGANIC EXTRACTS AND TOTAL ALCALOIDS OF INDIAN THORN APPLE (DATURA METEL L.) FROM TUNISIA
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BEL HADJ SALAH, K., primary, TAHRANI, L., additional, ALAMOUDI, S., additional, AL-QUWAIE, D.A.H., additional, HARZALLAH-SKHIRI, F., additional, and AOUNI, M., additional
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- 2022
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15. EE51 A Cost-Consequence Analysis of Adopting Chimeric Antigen Receptor T-Cell Therapy for Patients with Relapsed or Refractory Large B-Cell Lymphoma in Saudi Arabia: a Multi-Center Comparison
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Al-Abdulkarim, H.A., Alrajhi, A., Alzahrani, M., Alamoudi, S., Khan, M., Ball, G., Alharbi, M., and Mereani, W.
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- 2023
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16. Collisional Damping and Resonance Behavior of Coupled Scissors Modes of a Bose–Einstein Condensate
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Al Khawaja, U., Bahlouli, H., Alamoudi, S. M., and Alsunaidi, A.
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- 2003
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17. MICROBIAL SIGNATURES IN THE RHIZOSPHERE AND SURROUNDING BULK SOILS AND DIFFERENTIAL ABUNDANCE DUE TO WATERING FOR SWEET INDIAN MALLOW (ABUTILON FRUTICOSUM).
- Author
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AL-QUWAIE, D. A. H. and ALAMOUDI, S. A.
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DROUGHT tolerance ,DEVIATORIC stress (Engineering) ,SOILS ,MALVACEAE ,BACILLUS (Bacteria) ,PLANT-water relationships - Abstract
The present study aims to decipher microbiota signatures of rhizosphere soil of the medicinal plant A. fruticosum and surrounding bulk soil. The study also investigates differential response of microbes potentially serving to promote drought tolerance in the plant. Microbiomes of rhizosphere and bulk soils were collected after 0, 24 and 48 h of watering, deep sequenced and annotated to the different taxonomic ranks. The results strongly indicated higher relative abundance in rhizosphere soil microbiomes compared to those in the bulk soil of phyla Proteobacteria, Actinobacteria, Bacteroidetes, Firmicutes and Acidobacteria. Of these, growth of Acidobacteria and Firmicutes, in addition to Gemmatimonadetes, Melainabacteria, Elusimicrobia and Armatimonadetes, responded positively to watering across microbiome source. While Cyanobacteria was the only abundant phylum in bulk soil and showed lower abundance in rhizosphere soil due to watering. At the genus level, Bacillus, Microvirga, Adhaeribacter, Sphingomonas, Arthrobacter and Pontibacter are the most abundant in rhizosphere soil, while growth of genera Ramlibacter, Haliangium, Gemmatimonas and unidentified genera of taxon Acidobacteria significantly increased 24 h after watering. Results of the present study warrant comprehensive research to dissect factors influencing differential stress responses and plant-bacterial relationships in order to provide feasible soil management programs in the future. [ABSTRACT FROM AUTHOR]
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- 2022
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18. Averaged dynamics of soliton molecules in dispersion-managed optical fibers
- Author
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Alamoudi, S. M., primary, Al Khawaja, U., additional, and Baizakov, B. B., additional
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- 2014
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19. Dynamical viscosity of nucleating bubbles
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Alamoudi, S., primary, Barci, D. G., additional, Boyanovsky, D., additional, de Carvalho, C. A. A., additional, Fraga, E. S., additional, Jorás, S. E., additional, and Takakura, F. I., additional
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- 1999
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20. Quantum kinetics and thermalization in a particle bath model
- Author
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Alamoudi, S. M., primary, Boyanovsky, D., additional, and de Vega, H. J., additional
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- 1999
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21. Quantum kinetics and thermalization in an exactly solvable model
- Author
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Alamoudi, S. M., primary, Boyanovsky, D., additional, de Vega, H. J., additional, and Holman, R., additional
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- 1998
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22. Domain walls out of equilibrium
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Alamoudi, S. M., primary, Boyanovsky, D., additional, and Takakura, F. I., additional
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- 1998
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23. Real-time dynamics of soliton diffusion
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Alamoudi, S. M., primary, Boyanovsky, D., additional, and Takakura, F. I., additional
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- 1998
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24. 334MO A multicenter retrospective study to understand the clinical characteristics, treatment patterns, and outcomes of CLL patients in the Middle East: A subgroup analysis of the CREEK study.
- Author
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Abdelfattah Soliman, R.M., Alhuraiji, A., Buyukasik, Y., Siddiqui, M., Alamoudi, S., Alshehri, H., Aboutaleb, A., Gonzalez Hernandez, F.J., Rajadhyaksha, V., and Absi, A.
- Subjects
- *
SUBGROUP analysis (Experimental design) , *RETROSPECTIVE studies , *THERAPEUTICS - Published
- 2023
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25. Nonequilibrium Relaxation of Bose–Einstein Condensates: Real-Time Equations of Motion and Ward Identities
- Author
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Boyanovsky, D., Wang, S.-Y., Lee, D.-S., Yu, H.-L., and Alamoudi, S. M.
- Subjects
- *
BOSE-Einstein condensation , *EQUATIONS of motion , *FIELD theory (Physics) - Abstract
We present a field-theoretical method to obtain consistently the equations of motion for small amplitude condensate perturbations in a homogeneous Bose-condensed gas directly in real time. It is based on a linear response and combines the Schwinger–Keldysh formulation of nonequilibrium quantum field theory with the Nambu–Gor''kov formalism of quasiparticle excitations in the condensed phase and the tadpole method in quantum field theory. This method leads to causal equations of motion that allow us to study the nonequilibrium evolution as an initial value problem. It also allows us to extract directly the Ward identities, which are a consequence of the underlying gauge symmetry and which in equilibrium lead to the Hugenholtz–Pines theorem. An explicit one-loop calculation of the equations of motion beyond the Hartree–Fock–Bogoliubov approximation reveals that the nonlocal, absorptive contributions to the self-energies corresponding to the Beliaev and Landau damping processes are necessary to fulfill the Ward identities in or out of equilibrium. It is argued that a consistent implementation at low temperatures must be based on the loop expansion, which is shown to fulfill the Ward identities order by order in perturbation theory. [Copyright &y& Elsevier]
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- 2002
- Full Text
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26. Functional Outcomes of Endoscopic Sinus Surgery: A Prospective Cohort Study Using the Sino-Nasal Outcome Test-16 Questionnaire.
- Author
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Shehri KA, Sait S, Alamoudi S, Khubrani Y, and Bahakim A
- Abstract
Background: Chronic rhinosinusitis affects a large portion of the adult population, and its symptoms can be burdensome to patients' quality of life. Functional endoscopic sinus surgery (FESS) is usually required after medical therapies fail., Objective: To analyze the outcomes of FESS in a tertiary hospital using the modified Arabic Sinonasal Outcome Test., Methods: This prospective cohort study involved administering an electronic questionnaire, the modified Arabic Sinonasal Outcome Test-16, pre-operatively to patients diagnosed with chronic rhinosinusitis who underwent FESS. This test was subsequently resent six weeks post-operatively. Scores were calculated by adding the total score of the 16 questions. The lowest possible score was 0, and the highest score was 48. Pre- and post-operative scores were compared., Results: Twenty-eight patients were included, with a mean age of 37.3±14.6. Our findings showed that FESS significantly improved all symptoms except cough and exophthalmos (p < 0.001). Nose congestion had the highest improvement score, with 78.6% of patients experiencing better symptoms. Lack of good night sleep was the second most ameliorated symptom, with 75% of patients showing improvement., Conclusion: Modified Arabic Sinonasal Outcome Test scores were significantly improved after FESS. Therefore, primary treatment with FESS should be considered for patients with chronic rhinosinusitis with nasal polyposis. However, further studies are recommended to investigate the long-term benefits of FESS and the impact of comorbidities, such as asthma and allergic rhinitis, on outcomes., Competing Interests: Human subjects: Consent was obtained or waived by all participants in this study. Unit of Biomedical Ethics (King Abdulaziz University, Jeddah, Saudi Arabia) issued approval HA-02-J-008. Ethical approval for this study was obtained from the Unit of Biomedical Ethics at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. Animal subjects: All authors have confirmed that this study did not involve animal subjects or tissue. Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Shehri et al.)
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- 2024
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27. Outcomes of central nervous system tuberculosis in Saudi Arabia: a multi-center study.
- Author
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Dhafer Alshehri F, Mahmood Okal F, Baeshen SK, Alharbi ZG, Khojah O, Alhawsawi WK, Alamoudi S, Bahati A, and Lary AI
- Subjects
- Humans, Saudi Arabia epidemiology, Male, Female, Adult, Middle Aged, Retrospective Studies, Treatment Outcome, Young Adult, Adolescent, Aged, Cohort Studies, Tuberculosis, Central Nervous System drug therapy, Tuberculosis, Central Nervous System epidemiology, Antitubercular Agents therapeutic use
- Abstract
Objectives: Central nervous system tuberculosis (TB) (CNS-TB) can occur in several forms, including intracranial tuberculoma, tuberculous brain abscess, TB meningitis (TBM), and spinal TB. Early treatment can save lives and prevent severe neurological complications. This study aimed to describe the characteristics and post-treatment outcomes of patients with CNS-TB and identify factors associated with poor outcomes. To the best of our knowledge, this is the largest CNS-TB study till date published in Saudi Arabia., Methods: This retrospective cohort study included all patients diagnosed with CNS-TB in three tertiary centers in Saudi Arabia (King Abdulaziz Medical City in Jeddah, King Abdulaziz Medical City in Riyadh, and Al-Noor Specialist Hospital in Makkah) between 2009 and 2019. Data of patients' demographics, co-morbidities, presenting symptoms, type of CNS-TB, medical and surgical treatments, and outcome after completion of treatment were obtained from medical records. Treatment outcomes were categorized using the modified Rankin Scale for neurological disability., Results: A total of 140 participants were included in this study from 2009 to 2019. Good outcomes were achieved in approximately 65% of cases, whereas 35% had poor outcomes based on the modified Rankin Scale. Glasgow Coma Scale score ≤10 at presentation and TBM/tuberculoma were significantly associated with poor outcomes. Moreover, the use of corticosteroids, more than three anti-TB medications, and surgical interventions were not significantly associated with good or poor outcomes., Discussion: CNS-TB is associated with a high burden of long-term neurological morbidity. Early detection and treatment are crucial to prevent serious complications and decrease morbidity and mortality.
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- 2024
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28. Failure Rate of Dental Implants in the Esthetic Zone: A Systematic Review and Meta-Analysis.
- Author
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Alzahrani M, Bakhreibah S, Alharbi N, Alamoudi L, Halloul S, Alamoudi S, Alharthi R, Baghdadi S, and Alamoudi A
- Abstract
The present systematic review and meta-analysis has systematically reviewed and analyzed dental implant failure for the implants placed in the esthetic zone. An electronic database search was performed in PubMed and ScienceDirect, including a manual search through the references using appropriate keywords and the PICO (population, intervention, control, and outcomes) format for the inclusion criteria. A total of 11 relevant articles were included. The quality of the randomized controlled trial ( RCT ) studies was assessed using the Cochrane Risk of Bias tool while the quality of non-randomized studies was assessed using the Newcastle Ottawa scale. Of the 11 articles included, 5 were RCTs, and 6 were non-randomized. The overall failure rate was found to be 2% (95% CI; 0.00-0.03%). The percentage marginal bone loss was estimated to be 1% (95% CI; 0.00 - 0.02%) and the mean and proportion pink esthetic scores were approximately 11.75 (0.43%) with 2% mid-facial soft tissue recession and the mesial and distal papillary recession was 0.02% and 0.01%, respectively. Based on this systematic review and meta-analysis, the rate of dental implant failure for implant placement in the esthetic zone was minimal. In addition, 1% proportional marginal bone loss and moderately high esthetic scores were found., Competing Interests: Conflicts of interest: In compliance with the ICMJE uniform disclosure form, all authors declare the following: Payment/services info: All authors have declared that no financial support was received from any organization for the submitted work. Financial relationships: All authors have declared that they have no financial relationships at present or within the previous three years with any organizations that might have an interest in the submitted work. Other relationships: All authors have declared that there are no other relationships or activities that could appear to have influenced the submitted work., (Copyright © 2024, Alzahrani et al.)
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- 2024
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29. Neglected Developmental Hip Dysplasia Treated With External Iliofemoral Distraction, Open Reduction, and Pelvic Osteotomy: Eleven-Year Follow-Up.
- Author
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Amin OA, AlAmoudi S, Amin BA, and Alamoudi A
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- Child, Female, Humans, Femur surgery, Follow-Up Studies, Hip Dislocation, Congenital surgery, Osteogenesis, Distraction methods, Pelvic Bones surgery, Developmental Dysplasia of the Hip surgery, Osteotomy methods
- Abstract
Neglected untreated developmental hip dysplasia can result in severe deformities and functional disabilities. This report describes the treatment and 11-year follow-up of a patient who underwent the procedure in two stages. At the time of treatment, the patient was 7 years of age and was diagnosed with acetabular dysplasia and neglected right hip dysplasia. A stepwise treatment approach, including gradual distraction of the iliofemoral joint, open reduction, and pelvic osteotomy, was performed. Subsequent postoperative rehabilitation and regular follow-up assessments were performed over 11 years. The long-term results indicated notable improvements in hip joint congruency, functional range of motion, and overall quality of life. Early diagnosis and appropriate intervention are crucial for patients with developmental hip dysplasia, and the treatment methods described here are effective., (Copyright © 2024 The Authors. Published by Wolters Kluwer Health, Inc. on behalf of the American Academy of Orthopaedic Surgeons.)
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- 2024
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30. Patterns of multiple sclerosis presentation to the emergency department.
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Makkawi S, Maglan A, Khojah O, Allaf F, Alamoudi S, Ahmed ME, Alsharif R, Altayeb M, Alharthi A, Abulaban A, and Al Malik Y
- Abstract
Background: Multiple sclerosis (MS) patients are no strangers to the emergency department (ED) due to the relapsing and progressive nature of the disease and the associated complications. This study aimed to identify patterns of ED visits among patients diagnosed with MS, the underlying causes of these visits, and the factors associated with these visits., Methods: This was a single center retrospective cohort study which utilized a non-probability consecutive sampling technique to include all patients diagnosed with MS (471 patients) from March 2016 to October 2021 in King Abdulaziz Medical City, Jeddah, Saudi Arabia. ED visits were categorized as directly related to MS, indirectly related to MS, or unrelated to MS., Results: One in four people with MS visited the ED at least once with a total of 280 ED visits. Most ED visits were ones directly related to MS 43.6%, closely followed by unrelated to MS 41.1%, and then indirectly-related MS visits 15.4%. The most common presenting symptoms in directly-related MS visits were weakness 56.6% and numbness/tingling 56.6% followed by gait impairment 29.5%. Indirectly related to MS or unrelated to MS ED visits were commonly due to neurological 17.7% and gastrointestinal 17.1% causes. Using disease modifying therapy (DMT) was significantly associated with no ED visits ( p < 0.001). The use of high-efficacy DMTs was significantly associated with no ED visits than using moderate efficacy DMT ( p < 0.001). The use of B-cell depleting therapy (ocrelizumab and rituximab) was significantly associated with no visits to the ED than using any other DMT ( p < 0.001). Evidence of brain atrophy on imaging was significantly associated with patients who presented to the ED ≥3 times ( p = 0.006, UOR = 3.92)., Conclusion: Due to the nature of the disease, many MS patients find themselves visiting the ED due to MS related and unrelated issues. These patients are not only required to be treated by neurologists but also by multiple disciplines. The use of high-efficacy DMTs and B-cell depleting therapy may reduce the total frequency of ED visits. Special attention should be paid to patients who have evidence of brain atrophy on imaging., Competing Interests: SM reports personal fees from Roche, Merck, Novartis, Sanofi Genzyme, Biogen, Janssen, Biologix, AstraZeneca, and Horizon Therapeutics outside the submitted work. AAb reports personal fees from Roche, Merck, Novartis, Biogen, Janssen, Biologix, AstraZeneca, Sudair Pharma, Pharmascience, Genpharma, SPIMACO, and Horizon Therapeutics outside the submitted work. YM reports personal fees from Roche, Merck, Novartis, Sanofi Genzyme, Biogen, Janssen, Hikma, and SAJA outside the submitted work. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Makkawi, Maglan, Khojah, Allaf, Alamoudi, Ahmed, Alsharif, Altayeb, Alharthi, Abulaban and Al Malik.)
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- 2024
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31. Virtual screening and site-directed mutagenesis-derived aptamers for precise Salmonella typhimurium prediction: emphasizing OmpD targeting and G-quadruplex stability.
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Zamzami M, Altayb H, Ahmad A, Choudhry H, Hosawi S, Alamoudi S, Al-Malki M, Rabbani G, and Arkook B
- Abstract
The efficient detection of the foodborne pathogen Salmonella typhimurium has historically been hampered by the constraints of traditional methods, characterized by protracted culture periods and intricate DNA extraction processes for PCR. To address this, our research innovatively focuses on the crucial and relatively uncharted virulence factor, the Outer Membrane Protein D (OmpD) in Salmonella typhimurium . By harmoniously integrating the power of virtual screening and site-directed mutagenesis, we unveiled aptamers exhibiting marked specificity for OmpD. Among these, aptamer 7ZQS stands out with its heightened binding affinity. Capitalizing on this foundation, we further engineered a repertoire of mutant aptamers, wherein APT6 distinguished itself, reflecting unmatched stability and specificity. Our rigorous validation, underpinned by cutting-edge bioinformatics tools, amplifies the prowess of APT6 in discerning and binding OmpD across an array of Salmonella typhimurium strains. This study illuminates a transformative approach to the prompt and accurate detection of Salmonella typhimurium , potentially redefining boundaries in applied analytical chemistry and bolstering diagnostic precision across diverse research and clinical domains.Communicated by Ramaswamy H. Sarma.
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- 2024
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32. Lenalidomide-Induced Diffuse Alveolar Hemorrhage in Patient With Multiple Myeloma.
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Qanash S, Alamoudi S, Alsuraihi A, Jafri A, Malakah MA, Baghlaf B, Alamoudi M, and Althobaiti MM
- Abstract
We present a case of multiple myeloma that was treated with a regimen that included lenalidomide. Lenalidomide, a thalidomide analog, is an immunomodulatory drug created synthetically by changing the chemical makeup of thalidomide to increase efficacy and lessen negative effects. It has been authorized for the treatment of relapsed or resistant multiple myeloma. In the case discussed in this report, the patient's lenalidomide dosage was changed to account for her renal impairment. Regardless of this adjustment of the dose, the patient presented with lung infiltrates, hemoptysis, and fever. Unfortunately, she was diagnosed with diffuse alveolar hemorrhage (DAH) secondary to lenalidomide after excluding other causes of hemoptysis. To the best of our knowledge, we believe this is the first case of DAH reported with lenalidomide in Saudi Arabia, which also discusses the possible therapeutic options for such presentations., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Qanash et al.)
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- 2023
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33. Comparison of a modified pediatric protocol versus a hyper-CVAD protocol in adolescents and young adults with Philadelphia-negative acute lymphoblastic leukemia: A multicenter retrospective analysis.
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Salama H, Eldadah S, Omer MH, Alhejazi A, Bin Dayil L, Almozaini A, Khalil RR, Mugairi AA, Snnallah M, Damlaj M, Alaskar A, Alsaeed A, Bakkar MM, Alahmari B, Alzahrani M, Elhemaidi I, Alahmadi M, Alamoudi S, Rajkhan W, Khalil M, Kanfar SS, Saleh ASA, Raizah AA, Ibrahim A, and Absi A
- Subjects
- Humans, Adolescent, Young Adult, Child, Retrospective Studies, Doxorubicin therapeutic use, Cyclophosphamide therapeutic use, Antineoplastic Combined Chemotherapy Protocols adverse effects, Dexamethasone adverse effects, Vincristine therapeutic use, Multicenter Studies as Topic, Precursor Cell Lymphoblastic Leukemia-Lymphoma drug therapy, Precursor Cell Lymphoblastic Leukemia-Lymphoma complications
- Abstract
Background: The outcomes of Pediatric acute lymphoblastic leukemia (ALL) have improved dramatically whereas outcomes for ALL amongst adolescents and young adults (AYA) have lagged behind. The introduction of pediatric-like regimens to manage adult ALL has shown promising outcomes across several analyses., Materials and Methods: In this analysis, we aimed to retrospectively compare the differences in outcomes among patients aged 14-40 years with Philadelphia-negative ALL treated with a Hyper-CVAD protocol versus a modified pediatric protocol., Results: A total of 103 patients were identified with 58 (56.3%) in the modified ABFM group and 45 (43.7%) in the hyper-CVAD group. The median duration of follow-up for the cohort was 39 months (range 1-93). There were significantly lower rates of MRD persistence after consolidation (10.3% vs. 26.7%, P = 0.031) and transplantation (15.5% vs. 46.6%, P < 0.001) in the modified ABFM group. 5-year OS rates (83.9% vs. 65.3%, P = 0.036) and DFS rates (67.4% vs. 44%, P = 0.014) were higher in the modified ABFM groups. The incidence of grade 3 and 4 hepatotoxicity (24.1% vs. 13.3%, P < 0.001) and osteonecrosis (20.6% vs. 2.2%, P = 0.005) were higher in the modified ABFM group., Conclusion: Our analysis demonstrates that the use of a pediatric modified ABFM protocol demonstrated superior outcomes compared to the hyper-CVAD regimen in the treatment of Philadelphia-negative ALL amongst AYA patients. However, the modified ABFM protocol was associated with an increased risk of certain toxicities including high grade liver toxicity and osteonecrosis., Competing Interests: Declaration of Competing Interest The authors have no conflicts of interest to declare., (Copyright © 2023 Elsevier Ltd. All rights reserved.)
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- 2023
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34. Comparison of Biosimilar Filgrastim with Innovator Fligrastim for Peripheral Blood Stem Cells Mobilization, Collection of CD34+ Stem Cells, and Engraftment in Patients Undergoing Autologous and Allogeneic Stem Cell Transplantation: A Single-Center Experience.
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Islami MM, Khan MA, Aseeri MA, Alshamrani MA, Alnatsheh A, Alamoudi S, and Alzahrani AA
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- Adult, Humans, Filgrastim therapeutic use, Retrospective Studies, Granulocyte Colony-Stimulating Factor therapeutic use, Stem Cell Transplantation, Antigens, CD34, Cell Adhesion Molecules, Biosimilar Pharmaceuticals therapeutic use, Peripheral Blood Stem Cells, Hematopoietic Stem Cell Transplantation
- Abstract
BACKGROUND In the Middle East, there is lack of data on peripheral blood CD34+stem cells mobilization by using biosimilar filgrastim. We have been using both Neupogen and a biosimilar G-CSF) Zarzio® (as a mobilizing agent since February 2014 for both allogenic and autologous stem cell transplantations. MATERIAL AND METHODS This was a single-center retrospective study. All patients and healthy donors who received either the biosimilar G-CSF (Zarzio®) or original G-CSF (Neupogen®) for mobilization of CD34+ stem cells were included in the study. The primary goal was to determine and compare the rate of successful harvest and amount of CD34+ stem cells collected in either adult cancer patients or healthy donors between Zarzio® and Neupogen® groups. RESULTS A total of 114 patients, including 97 cancer patients and 17 healthy donors, underwent successful CD34+ stem cell mobilization using G-CSF with chemotherapy (35 with Zarzio® +chemotherapy, 39 with Neupogen® +chemotherapy) or G-CSF as monotherapy (14 with Zarzio®, 9 with Neupogen®) in autologous transplantation. In an allogeneic stem cell transplantation, successful harvest was achieved by using G-CSF monotherapy (8 with Zarzio®, 9 with Neupogen®). There was no difference between Zarzio® and Neupogen® in the amount of CD34+ stem cells collected at leukapheresis. There was no difference with regards to secondary outcomes between the 2 groups. CONCLUSIONS Our study showed that biosimilar G-CSF (Zarzio®) has comparable efficacy to the original G-CSF (Neupogen®) when used for mobilization in both autologous and allogenic stem cell transplantation and was associated with significant cost saving.
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- 2023
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35. A 68-Year-Old Man with a Cytogenetic Diagnosis of Chronic Myeloid Leukemia and Bone Marrow Findings of Philadelphia Chromosome Translocation Between the Long Arm of Chromosomes 9 and 22, Leading to the BCR-ABL1 Fusion Gene and V617F Mutation in the JAK2 Gene.
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Warsi A, Alamoudi S, Alsuraihi AK, Althobaiti M, Daghistani M, Samarin K, Alahmadi MO, Abuyabis RG, Bogari RA, and Filimban SA
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- Aged, Humans, Male, Bone Marrow, In Situ Hybridization, Fluorescence, Janus Kinase 2 genetics, Philadelphia Chromosome, Translocation, Genetic, Diabetes Mellitus, Type 2, Leukemia, Myelogenous, Chronic, BCR-ABL Positive diagnosis, Leukemia, Myelogenous, Chronic, BCR-ABL Positive drug therapy, Leukemia, Myelogenous, Chronic, BCR-ABL Positive genetics
- Abstract
BACKGROUND Breakpoint cluster region (BCR)-Abelson murine leukemia (ABL1) and Janus Kinase-2 (JAK2) mutations have been thought to be mutually exclusive in myeloproliferative neoplasms (MNPs), but recent data suggest that they can occur together. CASE REPORT A 68-year-old man was referred to the hematology clinic because of an elevated white blood cell count. His medical history included type II diabetes mellitus, hypertension, and retinal hemorrhage. Fluorescence in situ hybridization analysis of the bone marrow was positive for BCR-ABL1 in 66/100 cells. Conventional cytogenetics was positive for the Philadelphia chromosome in 16/20 counted cells. The percentage of BCR-ABL1 was 12%. Considering the patient's age and medical comorbidities, he was started on imatinib 400 mg once daily. Further tests showed JAK2 V617F mutation positivity and absence of acquired von Willebrand disease. He was then started on aspirin 81 mg and hydroxyurea 500 mg once daily, which was later increased to 1000 mg daily. The patient achieved a major molecular response after 6 months of treatment, with undetectable BCR-ABL1 levels. CONCLUSIONS BCR-ABL1 and JAK2 mutations can co-existence in MNPs. Physicians must suspect the presence of one of the MPNs in chronic myeloid leukemia (CML) patients with persistent or increased thrombocytosis, an atypical course of the disease, or hematological abnormalities despite evidence of response or remission of CML. Therefore, testing for JAK2 should be performed accordingly. Combining cytoreductive therapy with tyrosine kinase inhibitors (TKIs) is a therapeutic option when both mutations are present, and TKI alone is not sufficient to control peripheral blood cell counts.
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- 2023
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36. Direct Identification of Label-Free Gram-Negative Bacteria with Bioreceptor-Free Concentric Interdigitated Electrodes.
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Zamzami M, Alamoudi S, Ahmad A, Choudhry H, Khan MI, Hosawi S, Rabbani G, Shalaan ES, and Arkook B
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- Electrodes, Bacteria, Gram-Negative Bacteria, Limit of Detection, Biosensing Techniques methods
- Abstract
This investigation demonstrates an electrochemical method for directly identifying unlabeled Gram-negative bacteria without other additives or labeling agents. After incubation, the bacterial cell surface is linked to the interdigitated electrode through electroadsorption. Next, these cells are exposed to a potential difference between the two electrodes. The design geometry of an electrode has a significant effect on the electrochemical detection of Gram-negative bacteria. Therefore, electrode design geometry is a crucial factor that needs to be considered when designing electrodes for electrochemical sensing. They provide the area for the reaction and are responsible for transferring electrons from one electrode to another. This work aims to study the available design in the commercial market to determine the most suitable electrode geometry with a high detection sensitivity that can be used to identify and quantify bacterial cells in normal saline solutions. To work on detecting bacterial cells without the biorecognition element, we have to consider the microelectrode's design, which makes it very susceptible to bacteria size. The concentration-dilution technique measures the effect of the concentration on label-free Gram-negative bacteria in a normal saline solution without needing bio-recognized elements for a fast screening evaluation. This method's limit of detection (LOD) cannot measure concentrations less than 102 CFU/mL and cannot distinguish between live and dead cells. Nevertheless, this approach exhibited excellent detection performance under optimal experimental conditions and took only a few hours.
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- 2023
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37. Outcomes of high‑dose methotrexate for CNS prophylaxis in diffuse large B‑cell lymphoma with an intermediate or high CNS‑International Prognostic Index: A single‑center retrospective cohort study.
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Al-Mansour M, Absi A, Al-Μufti R, Alahmadi M, El-Ηemaidi I, Alamoudi S, Eldadah S, Aga SS, Khan MA, and Alsaeed A
- Abstract
Central nervous system (CNS) relapse in patients with diffuse large B-cell lymphoma (DLBCL) is rare (2-5% of cases), but is a devastating complication with a poor survival rate. The administration of high-dose methotrexate (HDMTX) for CNS prophylaxis in patients with DLBCL is controversial and variable in the literature. The present study aimed to evaluate the clinical outcomes of HDMTX CNS prophylaxis in patients with intermediate and high CNS-International Prognostic Index (IPI) DLBCL using real-world data. An observational retrospective cohort study was conducted of all patients with intermediate and high CNS-IPI DLBCL treated at Princess Noorah Oncology Center (King Abdulaziz Medical City, Jeddah, Saudi Arabia) between January 2010 and December 2020. Patients were treated with HDMTX either intravenously or intrathecally, according to the physician's evaluation of the patient. Data on patient clinical characteristics, CNS relapses, risk factors and survival rates were obtained from hospital records. Data were analyzed using Student's unpaired t-test and the χ
2 test to compare the two subgroups, the Kaplan-Meier survival method with log-rank test to calculate and compare the survival rates, and regression analysis to determine the risk factors for CNS relapse and death. The study included 358 patients (n=32 with HDMTX CNS prophylaxis and n=326 without CNS prophylaxis). Patients in the CNS prophylaxis group had a significantly higher CNS relapse rate than those in the non-CNS prophylaxis group (12.5% vs. 1.8%; P=0.008). Patients who received CNS prophylaxis were younger and had an advanced stage of disease, with extranodal involvement and a high serum lactate dehydrogenase level at presentation. CNS prophylaxis was significantly associated with CNS relapse, while relapsed disease was associated with the risk of death (all P<0.05). In conclusion, the present study found that patients with intermediate and high CNS-IPI who received HDMTX CNS prophylaxis did not have fewer CNS relapses; however, those without CNS relapse had higher survival rates. In addition to CNS prophylaxis, Stage of DLBCL and IPI were significantly associated with CNS relapse. Future randomized control trials are needed to evaluate the efficacy of HDMTX CNS prophylaxis in patients with DLBCL., Competing Interests: The authors declare that they have no competing interests., (Copyright: © Al-Mansour et al.)- Published
- 2022
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38. Assessment of Quality of Life (QoL) of Colorectal Cancer Patients using QLQ-30 and QLQ-CR 29 at King Abdulaziz Medical City, Jeddah, Saudi Arabia.
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Qedair JT, Al Qurashi AA, Alamoudi S, Aga SS, and Y Hakami A
- Subjects
- Fatigue, Humans, Saudi Arabia epidemiology, Surveys and Questionnaires, Colorectal Neoplasms epidemiology, Quality of Life psychology
- Abstract
Objective: We aimed to assess the quality of life (QoL) and its predictors in colorectal cancer (CRC) patients at King Abdulaziz Medical City, Jeddah., Methods: A total of 118 CRC patients at King Abdulaziz Medical City, a tertiary hospital in Jeddah, participated in this study. The participants were provided with the online questionnaire via WhatsApp by trained researchers and data collectors in February 2021. All participants were required to answer the three-section questionnaire comprising of (a) demographic data and a validated Arabic version of the European Organization for Research and Treatment of Cancer (EORTC) quality of life questionnaires, (b) a general version (QLQ-30), and (c) a CRC-specific version (QLQ-CR29)., Results: Statistical analysis revealed that the most common comorbidity among the participants was diabetes mellitus (42.4%). In addition, the mean global health status was 63.91 ± 24.75. For the global health tool QLQ-C30, results exhibited that physical functioning [62.94 (30.04)] and social functioning [63.56 (31.95)] scored below the threshold, while the cognitive functioning scale scored the highest [74.86 (25.11)]. In addition, on the QLQ-C30 scales, fatigue and insomnia were distressing, with fatigue scoring the highest. For the disease-specific tool QLQ-CR29, it was found that for the symptom scale, urinary frequency and embarrassment scored the highest. Conclusion. The participants reported high global quality of life on both the EORTC QLQ-30 and QLQ-CR29 scales. This study identifies the factors and predictors that affect the quality of life of CRC patients in Saudi Arabia. Recognizing these factors and predictors may empower those patients to maintain positive perception towards the impact of colorectal cancer and improve their survival., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2022 Jumanah T. Qedair et al.)
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- 2022
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39. Management outcomes of otitis media with effusion in children with down syndrome: A systematic review.
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Sait S, Alamoudi S, and Zawawi F
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- Child, Hearing Tests, Humans, Middle Ear Ventilation adverse effects, Down Syndrome complications, Down Syndrome therapy, Hearing Loss diagnosis, Otitis Media with Effusion complications, Otitis Media with Effusion diagnosis, Otitis Media with Effusion therapy
- Abstract
Objective: To assesses the current state of uncertainty concerning the management options used for otitis media with effusion (OME) in children with trisomy 21., Review Methods: A systematic review of adhering to the PRISMA statement of studies evaluating the management of OME in trisomy 21 children prior to September 2021 was conducted. Studies were identified using the following medical databases: PubMed, Google Scholar, CINAHL, Scopus and Medline. Data extraction was performed by screening of titles and abstracts based on eligibility criteria, followed by full-article analysis of selected records., Results: Twenty articles were included in this review. Studies showed conflicting outcomes regarding the different interventions used for OME in children with trisomy 21. Of those evaluating pressure equalizing tubes (PET), some studies report pronounced complication rates and recommend using a conservative approach unless complications arise and/or hearing loss is severe. In contrast, other studies reported significantly reduced complication rates and improved hearing with earlier intervention and adaptations to PETs. Hearing aids may be provided after multiple failed PETs., Conclusion: Clinical equipoise still persists regarding the best method to manage children with trisomy 21 who have OME. Although PETs exhibited the lowest complication rates and highest improvement rates, further prospective trials are warranted to assess the various treatment modalities and determine which of them would provide the best outcome while reducing complications as well as the age of treatment., (Copyright © 2022 Elsevier B.V. All rights reserved.)
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- 2022
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40. Central nervous system vasculopathy and Seckel syndrome: case illustration and systematic review.
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Khojah O, Alamoudi S, Aldawsari N, Babgi M, and Lary A
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- Adolescent, Central Nervous System, Humans, Cerebrovascular Disorders epidemiology, Dwarfism, Microcephaly, Moyamoya Disease complications, Moyamoya Disease epidemiology
- Abstract
Purpose: To systematically review reported cases of Seckel syndrome (SS) and point out cases associated with central nervous system (CNS) vasculopathy and provide a summary of their clinical presentation, management, and outcomes including our illustrative case., Methods: We conducted a search on the MEDLINE, PubMed, Google Scholar, and Cochrane databases using the keywords "Seckel + syndrome." We identified 127 related articles reporting 252 cases of SS apart from our case. Moreover, we searched for SS cases with CNS vasculopathies from the same databases. We identified 7 related articles reporting 7 cases of CNS vasculopathies in SS patients., Results: The overall rate of CNS vasculopathy in SS patients is 3.16% (n = 8/253), where moyamoya disease (MMD) accounted for 1.97%. The mean age is 13.5 years (6-19 years), with equal gender distribution (M:F, 1:1). The most common presenting symptoms were headache and seizure followed by weakness or coma. Aneurysms were mostly located in the basilar artery, middle cerebral artery, and internal carotid artery, respectively. Regardless of the management approach, 50% of the cases sustained mild-moderate neurological deficit, 37.5% have died, and 12.5% sustained no deficit., Conclusion: A high index of suspicion should be maintained in (SS) patients, and MMD should be part of the differential diagnosis. Prevalence of CNS vasculopathy in SS is 3.16% with a much higher prevalence of MMD compared to the general population. Screening for cerebral vasculopathy in SS is justifiable especially in centers that have good resources. Further data are still needed to identify the most appropriate management plan in these cases., (© 2021. The Author(s).)
- Published
- 2021
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41. Clinical course and outcomes of COVID-19 in hematopoietic cell transplant patients, a regional report from the Middle East.
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El Fakih R, Haroon A, Alfraih F, Al-Khabori MK, Alzahrani M, Alhuraiji A, Hamadah A, AlJohani NI, Alahmari B, Essa MF, Motabi IH, Tailor IK, Almaghrabi RS, Al-Farsi K, Abosoudah I, Ayas M, Elhassan TA, Suhebeh AM, Ahmed SO, Alhayli S, Kaloyannidis P, Alsaeed A, Anezi KA, Alamoudi S, Damlaj M, Hashmi HA, and Aljurf M
- Subjects
- Humans, Retrospective Studies, SARS-CoV-2, Transplant Recipients, COVID-19, Hematopoietic Stem Cell Transplantation
- Abstract
The coronavirus disease-2019 (COVID-19) caused by SARS Coronavirus 2 (SARS-CoV-2) is a potentially lethal infection. Cancer patients, and specifically hematopoietic cell transplant (HCT) recipients are severely immunocompromised and may be at a higher risk of a complicated course with this infection. We aimed to study the COVID-19 outcomes and severity in post HCT patients. We retrospectively reviewed post-HCT patients diagnosed with COVID-19 between March 15, 2020, and December 1, 2020 at 10 transplant centers across the Middle East. We identified 91 patients with confirmed SARS-CoV-2 infection across 10 transplant centers. The median age upon presentation with COVID-19 was 35. Fifty two patients were post allo-HCT while the remaining 39 patients were post auto-HCT. The median time from transplant was 14.9 months. Mortality rate was 4.4%. Hospital admission rate was 53%. ICU admission rate was 14%. Mechanical ventilation rate was 10%. Oxygen supplementation rate was 18%. Time from HCT to COVID-19 >6 months was associated with lower admission rates and lower rates of the "severity" composite endpoint. Antibody responses was seen 67% of evaluable patients. In this series of HCT recipients, we report overall favorable clinical outcomes for patients with COVID-19 and provide preliminary insights into the clinical course of this disease in this specific population., (© 2021. The Author(s), under exclusive licence to Springer Nature Limited.)
- Published
- 2021
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42. Author Correction: Bioprospecting desert plant Bacillus endophytic strains for their potential to enhance plant stress tolerance.
- Author
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Bokhari A, Essack M, Lafi FF, Andres-Barrao C, Jalal R, Alamoudi S, Razali R, Alzubaidy H, Shah KH, Siddique S, Bajic VB, Hirt H, and Saad MM
- Abstract
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
- Published
- 2020
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43. The value of transfusion of phenotyped blood units for thalassemia and sickle cell anemia patients at an academic center.
- Author
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Hindawi S, Badawi M, Elfayoumi R, Elgemmezi T, Al Hassani A, Raml M, Alamoudi S, and Gholam K
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Anemia, Sickle Cell blood, Anemia, Sickle Cell therapy, Blood Donors, Female, Hospitals, University, Humans, Isoantibodies blood, Male, Middle Aged, Phenotype, Prospective Studies, Rh-Hr Blood-Group System immunology, Young Adult, beta-Thalassemia blood, beta-Thalassemia therapy, Blood Group Antigens immunology, Blood Transfusion
- Abstract
Background: Blood transfusion is the first-line treatment for patients with thalassemia and many sickle cell patients. However, cases of unregulated blood transfusion are shown to carry a high risk of alloimmunization to red blood cells (RBCs), which can lead to a hemolytic transfusion reaction and be fatal to patients. Screening and identification of alloantibodies are, therefore, essential practice in blood transfusion services. Transfusion of phenotyped blood can minimize these risks to patients., Study Design and Methods: A prospective study was carried out on 1015 donors, and a prospective and retrospective study was carried out on 208 multiple transfused patients with β-thalassemia and sickle cell anemia. Donor and patient samples were subjected to Rh & K typing, and patient samples were also subjected to screening & identification of RBC antibodies. We aimed to determine the prevalence of RBC antigens in thalassemia and sickle cell patients, as well as blood donors, at King Abdulaziz University Hospital and the frequency of alloimmunization in the selected patients., Results: The most commonly detected Rh-phenotype in donors was R1r (32.02%), followed by R1R1 (23.25%). Only 9.16% of donors were positive for the K antigen. The prevalence of Rh and K blood group antigens was also reported: the highest detected Rh-phenotype was R1r (40.86%) followed by R1R2 (24.04%) with only (6.25%) positive patients for K antigen. The rate of alloimmunization among sickle cell anemia and thalassemia patients was 39.42% and 35.57%, respectively. The highest specificity rates of the alloantibodies were recorded for anti-E and anti-K in both patient groups., Conclusion: The rate of alloimmunization in transfused patients was high and particularly observed against the Rh and K antigens. This study emphasizes the clinical need for typing patient RBCs prior to transfusion so as to provide phenotyped matched blood units and minimize the risks and associated morbidities of alloimmunization. Keeping a database of phenotyped blood donors is essential for the clinically effective and safe management of transfusion patients., (© 2020 AABB.)
- Published
- 2020
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44. Bioprospecting desert plant Bacillus endophytic strains for their potential to enhance plant stress tolerance.
- Author
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Bokhari A, Essack M, Lafi FF, Andres-Barrao C, Jalal R, Alamoudi S, Razali R, Alzubaidy H, Shah KH, Siddique S, Bajic VB, Hirt H, and Saad MM
- Abstract
Plant growth-promoting bacteria (PGPB) are known to increase plant tolerance to several abiotic stresses, specifically those from dry and salty environments. In this study, we examined the endophyte bacterial community of five plant species growing in the Thar desert of Pakistan. Among a total of 368 culturable isolates, 58 Bacillus strains were identified from which the 16 most divergent strains were characterized for salt and heat stress resilience as well as antimicrobial and plant growth-promoting (PGP) activities. When the 16 Bacillus strains were tested on the non-host plant Arabidopsis thaliana, B. cereus PK6-15, B. subtilis PK5-26 and B. circulans PK3-109 significantly enhanced plant growth under salt stress conditions, doubling fresh weight levels when compared to uninoculated plants. B. circulans PK3-15 and PK3-109 did not promote plant growth under normal conditions, but increased plant fresh weight by more than 50% when compared to uninoculated plants under salt stress conditions, suggesting that these salt tolerant Bacillus strains exhibit PGP traits only in the presence of salt. Our data indicate that the collection of 58 plant endophytic Bacillus strains represents an important genomic resource to decipher plant growth promotion at the molecular level.
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- 2019
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45. In silico exploration of Red Sea Bacillus genomes for natural product biosynthetic gene clusters.
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Othoum G, Bougouffa S, Razali R, Bokhari A, Alamoudi S, Antunes A, Gao X, Hoehndorf R, Arold ST, Gojobori T, Hirt H, Mijakovic I, Bajic VB, Lafi FF, and Essack M
- Subjects
- Bacillus enzymology, Bacteriocins metabolism, Genome, Bacterial genetics, Peptide Synthases genetics, Polyketide Synthases genetics, Ribosomes metabolism, Bacillus genetics, Bacillus metabolism, Biological Products metabolism, Computer Simulation, Genomics, Multigene Family genetics
- Abstract
Background: The increasing spectrum of multidrug-resistant bacteria is a major global public health concern, necessitating discovery of novel antimicrobial agents. Here, members of the genus Bacillus are investigated as a potentially attractive source of novel antibiotics due to their broad spectrum of antimicrobial activities. We specifically focus on a computational analysis of the distinctive biosynthetic potential of Bacillus paralicheniformis strains isolated from the Red Sea, an ecosystem exposed to adverse, highly saline and hot conditions., Results: We report the complete circular and annotated genomes of two Red Sea strains, B. paralicheniformis Bac48 isolated from mangrove mud and B. paralicheniformis Bac84 isolated from microbial mat collected from Rabigh Harbor Lagoon in Saudi Arabia. Comparing the genomes of B. paralicheniformis Bac48 and B. paralicheniformis Bac84 with nine publicly available complete genomes of B. licheniformis and three genomes of B. paralicheniformis, revealed that all of the B. paralicheniformis strains in this study are more enriched in nonribosomal peptides (NRPs). We further report the first computationally identified trans-acyltransferase (trans-AT) nonribosomal peptide synthetase/polyketide synthase (PKS/ NRPS) cluster in strains of this species., Conclusions: B. paralicheniformis species have more genes associated with biosynthesis of antimicrobial bioactive compounds than other previously characterized species of B. licheniformis, which suggests that these species are better potential sources for novel antibiotics. Moreover, the genome of the Red Sea strain B. paralicheniformis Bac48 is more enriched in modular PKS genes compared to B. licheniformis strains and other B. paralicheniformis strains. This may be linked to adaptations that strains surviving in the Red Sea underwent to survive in the relatively hot and saline ecosystems.
- Published
- 2018
- Full Text
- View/download PDF
46. First case of pneumonia caused by Cupriavidus pauculus in an infant in the Gulf Cooperation Council.
- Author
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Yahya R, Alyousef W, Omara A, Alamoudi S, Alshami A, and Abdalhamid B
- Subjects
- Anti-Bacterial Agents pharmacology, Cefepime, Cephalosporins pharmacology, Cupriavidus drug effects, Gram-Negative Bacterial Infections microbiology, Humans, Infant, Kidney Failure, Chronic complications, Male, Microbial Sensitivity Tests, Pneumonia, Bacterial microbiology, Saudi Arabia, Cupriavidus isolation & purification, Gram-Negative Bacterial Infections diagnosis, Gram-Negative Bacterial Infections pathology, Pneumonia, Bacterial diagnosis, Pneumonia, Bacterial pathology
- Abstract
Cupriavidus pauculus is an emerging organism causing infections in immunocompromised and immunocompetent patients. We report a C.pauculus pneumonia case susceptible to cefepime in an infant with end-stage renal failure. To our knowledge, this is the first case report of C. pauculus causing respiratory infections in the Gulf Cooperation Council.
- Published
- 2017
- Full Text
- View/download PDF
47. The perceptions and readiness toward interprofessional education among female undergraduate health-care students at King Saud University.
- Author
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Al-Eisa E, Alderaa A, AlSayyad A, AlHosawi F, AlAmoudi S, AlTaib S, Mahmoud S, AlGhanim T, Alghadir A, and Anwer S
- Abstract
[Purpose] Interprofessional education (IPE) is an important academic approach for preparing health-care professionals to provide patient care in a collaborative team environment. This study aimed to measure the perceptions and readiness toward IPE among female undergraduate health-care students at King Saud University (KSU). [Subjects and Methods] A cross-sectional study carried out using a survey in the form of an electronic questionnaire: The Readiness for Interprofessional Learning Scale (RIPLS). The questionnaire was distributed to the students via e-mail and social media networks. [Results] The RIPLS was completed by 296 female health-care students at KSU who valued the importance of IPE. The differences between health-care disciplines in the perceptions and readiness toward IPE were statistically significant, but there were no differences between students of different years of study in their perception and readiness toward IPE. [Conclusion] Administering a course of interprofessional teamwork in the health-care curriculum is a major challenge for the clinical education community. IPE offers an opportunity to address the multi-disciplinary concept in hospitals. Our findings indicate that undergraduate health-care students have high perception and readiness toward IPE.
- Published
- 2016
- Full Text
- View/download PDF
48. Salvage chemotherapy and autologous stem cell transplantation for transformed indolent lymphoma: a subset analysis of NCIC CTG LY12.
- Author
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Kuruvilla J, MacDonald DA, Kouroukis CT, Cheung M, Olney HJ, Turner AR, Anglin P, Seftel M, Ismail WS, Luminari S, Couban S, Baetz T, Meyer RM, Hay AE, Shepherd L, Djurfeldt MS, Alamoudi S, Chen BE, and Crump M
- Subjects
- Adult, Aged, Cisplatin administration & dosage, Cytarabine administration & dosage, Deoxycytidine administration & dosage, Deoxycytidine analogs & derivatives, Dexamethasone administration & dosage, Etoposide administration & dosage, Female, Follow-Up Studies, Humans, Lymphoma, Large B-Cell, Diffuse pathology, Lymphoma, Non-Hodgkin pathology, Male, Middle Aged, Multivariate Analysis, Prognosis, Recurrence, Survival Analysis, Time Factors, Transplantation, Autologous, Gemcitabine, Antineoplastic Combined Chemotherapy Protocols, Hematopoietic Stem Cell Transplantation, Lymphoma, Large B-Cell, Diffuse therapy, Lymphoma, Non-Hodgkin therapy, Salvage Therapy methods
- Abstract
The treatment of transformed indolent lymphoma (TRIL) often includes salvage chemotherapy (SC) and autologous stem cell transplant (ASCT). NCIC CTG LY12 is a randomized phase 3 trial comparing gemcitabine, dexamethasone, and cisplatin (GDP) with dexamethasone, cytarabine, and cisplatin (DHAP) before ASCT. This analysis compares the results of SC and ASCT for TRIL with de novo diffuse large B-cell lymphoma (DLBCL). Six-hundred nineteen patients with relapsed/refractory aggressive non-Hodgkin lymphoma were randomized to GDP or DHAP; 87 patients (14%) had TRIL and 429 (69%) had DLBCL. The response rate to SC was 47% in TRIL and 45% in DL (P = .81). Transplantation rates were similar: TRIL 53% and DL 52% (P = 1.0). With a median follow-up of 53 months, 4 year overall survival was 39% for TRIL and 41% for DL (P = .78); 4 year event-free survival (EFS) was 27% for TRIL and 27% for DL (P = .83). Post-ASCT, 4-year EFS was 45% for TRIL and 46% for DL. Histology (TRIL or DL) was not a predictor of any outcome in multivariate models. Patients with relapsed or refractory TRIL and DLBCL have similar outcomes with SC and ASCT; this therapy should be considered the standard of care for patients with TRIL who have received prior systemic chemotherapy. NCIC CTG LY12 is registered at ClinicalTrials.gov as #NCT00078949., (© 2015 by The American Society of Hematology.)
- Published
- 2015
- Full Text
- View/download PDF
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