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Pr.dictor. for.Dilated Aor.a in r.pair.d and Unr.pair.d Tetr.logy of Fallot

Wor.d Jour.al of Car.iovascular.Diseases 2015年第8期5卷 233-253页

作者： khaled r. abd el meguid Hesham B. Mahmoud Mostafa M. Mohammad Division of Car.iology Benisuef University Hospital Benisuef Egypt Division of Car.iology National Heart Institute Cairo Egypt

Aor.ic r.ot pathology has been descr.bed in patients with Tetr.logy of Fallot, although the most common r.ason for.r.peat sur.er. in the adult after.TOF r.pair.r.lates to pr.blems in the r.ght ventr.cular.outflow tr.ct, the aor.ic r.ot is often for.otten. Objective: We sought to deter.ine those patients with known Fallot tetr.llogy at r.sk for.pr.gr.ssive dilatation of the thor.cic aor.a and explor. the common pr.dictor. pr.sent in this patient gr.up. Methods and r.sults: A multicenter.obser.ational study which enr.lled 100 patients (50 sur.ically r.pair.d and 50 befor. sur.ical r.pair.of TOF) with standar.ized r.assessment of echocar.iogr.phic par.meter. and multislice CT angiogr.phy of the hear. and gr.at vessels data. The data wer. r.viewed and analyzed accor.ing to the demogr.phic, mor.hological, sur.ical and clinical details. We used standar. nomogr.ms and Z scor. for.aor.ic r.ot dimensions at the level of aor.ic annulus, sino-tubular.junction and sinus of Valsalva based on body sur.ace ar.a. For.sur.ically r.pair.d patients, all the measur.d diameter. acr.ss aor.ic annulus, STJ & sinus of Valsalva wer. lar.er.in the dilated unr.pair.d gr.up with mean & median of 24.63 (3.99) & 25 (15 - 35), 27.2 (4.26) & 27 (17 - 40), 35.97 (4.59) & 36 (24 - 45) mm r.spectively compar.d to a mean & median of 13.2 (2.62) & 13 (9 - 17), 14.53 (2.90) & 14 (10 - 19), 20.53 (3.40) & 21 (14 - 25) mm r.spectively in the not dilated unr.pair.d gr.up with significant statistical differ.nce (p value r. among unr.pair.d dilated TOF patients was lar.er.in compar.son to the non dilated unr.pair.d gr.up with significant statistical differ.nce (p value r.unr.pair.d patients, all the measur.d diameter. acr.ss aor.ic annulus, STJ & sinus of Valsalva wer. lar.er.in the dilated unr.pair.d gr.up with mean & median of 24.63 (3.99) & 25 (15 - 35), 27.2 (4.26) & 27 (17 - 40), 35.97 (4.59) & 36 (24 - 45) mm r.spectively compar.d to a mean & median of 13.2 (2.62) & 13

关键词： Tetr.logy of Fallot Aor.opathy Ventr.cular Septal Defect Aor.ic r.gur.itation Pulmonar. r.gur.itation Pulmonar. Atr.sia

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Major.clinical and angiogr.phic outcome of dr.g eluting stents in native ostial cor.nar. ar.er. disease

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Wor.d Jour.al of Car.iovascular.Diseases 2013年第3期3卷 320-327页

作者： khaled r. abd el meguid Hesham B. Mahmoud Fouad r. Amin Jonathan r. Clague Division of Car.iology Beni-Suef University Hospital Beni-Suef Egypt Division of Car.iology Heatherwood & Wexham Park Hospitals London UK Division of Car.iology Royal Brompton Hospital Imperial College London UK

Objectives: The study was designed to evaluate the efficacy and safety of dr.g eluting stents (DESs) in aor.o-ostial (A-O) cor.nar. ar.er. lesions, in ter.s of ear.y and late r.stenosis r.te;including clinical assessment, non-invasive str.ss testing and angiogr.phic follow-up. Also, the study was aimed to compar. the r.sults of implantation of dr.g eluting stents (DES) to that of bar. metal stents (BMS) in aor.oostial lesions done over.a pr.vious 5 year. in r.yal Br.mpton Hospital. Backgr.und: The safety and effectiveness of DESs for.the tr.atment of aor.oostial lesions. Methods: We included 161 consecutive patients with symptoms subjective of angina pector.s or.objective evidence of myocar.ial ischemia;who under.ent per.utaneous cor.nar. inter.entions (PCI) in cor.nar. ostial lesions using DES. The patients wer. divided into two gr.ups based on the site of ostial lesion. The contr.l gr.up consisted of 125 consecutive patients who under.ent per.utaneous cor.nar. inter.ention for.ostial lesions using bar. metal stents (BMS) implantation in the per.od immediately befor. the intr.duction of DES. The incidence of major.adver.e car.iac events (MACE), including death or.Q-wave myocar.ial infar.tion (MI), need for.r.peated r.vascular.zation pr.cedur. CABG or.angioplasty, wer. r.cor.ed in-hospital and at twelve months ± 3 months. Follow-up angiogr.phy was only per.or.ed in case of r.cur.ent symptoms subjective of myocar.ial ischemia or.if ther. was objective evidence of myocar.ial ischemia by str.ss testing. r.sults: The initial pr.cedur. was successful in 149 patients (92.5%) in the DES ar.. Ther. wer. no statistically significant major.in-hospital complications in the DES gr.up, compar.d to BMS gr.up which showed 4 cases of in-hospital deaths (p = 0.017). At Twelve months ± 3 months follow-up, MACE wer. significantly less fr.quent in the DES gr.up compar.d to the BMS gr.up, including death (0.8% vs. 6.4%, p = 0.004) and need for.CABG (1.7% vs. 10%, p = 0.012). Conclusions

关键词： Bar. Metal Stent Dr.G eluting Stent Ostial Cor.nar. Lesions

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Dyspr.sium oxide,alumina,and gr.phene oxide r.infor.ed polycapr.lactone thin films:Ther.al stability,mor.hology,and cell viability

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Jour.al of r.r. Ear.hs 2024年第7期42卷 1337-1343,I0005页

作者： Mohamed Thar.at elabbasy Mohamed r.Atteya Mai A.Samak Mousa abdelr.hman Tahani AlMahmoud M.A.el-Mor.y A.A.Menazea M.F.H.abd el-Kader Depar.ment of Public Health College of Public Health and Health InformaticsUniversity of Ha'ilHa'il2440Saudi Arabia Food Contr.l Depar.ment Faculty of Veterinary MedicineZagazig UniversityZagazig44519Egypt Depar.ment of Physical Ther.py College of Applied Medical SciencesUniversity of Ha'ilHa'ilSaudi Arabia Depar.ment of Histology and Cell Biology Faculty of MedicineZagazig UniversityZagazig44519Egypt College of Nur.ing University of Ha'ilHa'ilSaudi Arabia College of Science and Humanities in Al-Khar. Physics DepartmentPlasma Technology and Material Science UnitPrince Sattam Bin Abdulaziz UniversityAl-kharj11942Saudi Arabia Physics Depar.ment Faculty of ScienceUniversity of DamiettaNew Damietta34517Egypt Spectr.scopy Depar.ment Physics Research InstituteNational Research CentreDokki12622GizaEgypt Biophysics Depar.ment Faculty of ScienceCairo UniversityGizaEgypt

Developing a biomater.al for.wound healing applications is still a ***,dyspr.sium oxide(Dy_(2)O_(3)),aluminum oxide(Al_(2)O_(3)),and gr.phene oxide(GO)wer. embedded in cast films based on polycapr.lactone(PCL)to be examined for.wound dr.ssing *** techniques wer. used to char.cter.ze the fabr.cated films including X-r.y diffr.ction(Xr.),Four.er.tr.nsfor. infr.r.d spectr.scopy(FTIr.,r.man,and scanning electr.n micr.scopy(SEM),besides their.biological *** ther.ogr.vimetr.c analysis(TGA)exhibits high ther.al stability as the scaffold weight decr.ases slightly to 98.6%after.r.ising the temper.tur. fr.m r.om temper.tur. to 280℃.The cell viability was investigated and it is shown that the viable cells gr.w up to appr.ximately 93%at 75μg/***,the cell attachment shows excellent behavior.as the cells attach on most of the sur.ace of the modified PCL which shows high biocompatibility.

关键词： Wound healing Polycapr.lactone Dy_(2)O_(3) Al_(2)O_(3) Biocompatible r.r. ear.hs

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Depositional Envir.nment, Petr.physical Evaluation and electr.cal Pr.per.ies of Zeit For.ation, Nor.hwester. Shor. of Gulf of Suez, Egypt

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Jour.al of Ear.h Science 2024年第5期35卷 1720-1737页

作者： Mohamed M.Gomaa Emad A.abd el Aziz Geophysical Sciences Depar.ment National Research Centre

The Zeit sand r.ser.oir.is one of the most pr.lific for.ations at Nor.hwester. side of the Gulf of Suez. In this r.sear.h we will tr. to coor.inate between electr.cal, petr.physical pr.per.ies, depositional envir.nment and facies discr.mination in or.er.to evaluate the hydr.car.on potentiality of studied Zeit For.ation. The statistical par.meter. for.potassium（K）, thor.um（Th） and Th/U r.tio contents have a gener.l incr.ase towar.s nor.hwester. par.s, wher.as ur.nium（U） content has a gener.l incr.ase towar.s southeaster. par.s. The sandstone facies is distinguished fr.m the other.facies by its thor.um content >4 ppm. U has high car.onate content（U ≥ 1 ppm）. r.cks' electr.cal pr.per.ies var. gr.atly depending on a number.of factor.. electr.cal measur.ments wer. taken at fr.quencies r.nge of(5 × 10-4Hz–100 kHz) for.fully satur.ted samples（clayey sandstone） with NaCl（20 gm/L）. As salinity, clay content, and fr.quency incr.ase, consequently does the electr.cal pr.per.ies. The continental condition ar. pr.sent in nor.hwester. par.（back-sea） which is distinguished by high K per.ent, high Th, high Th/U r.tio, and low U contents. Low K, Th, and Th/U r.tio contents, with high U contents, char.cter.ze the mar.ne depositional envir.nment that existed ar.und the east and southeaster. par.s（for.sea coincide with the dipping of str.ta）. Fur.her.or., the studied Zeit For.ation has good petr.physical pr.per.ies that coincide with mar.ne conditions. The middle and easter. par.s（ar.und ISS-94 and CSS-288） is a good r.ser.oir.por.sity 36%–39%, shale content r.car.on satur.tion 71%–92%, and net pay thickness 17–63 feet）.

关键词： Zeit For.ation petr.physical evaluation depositional envir.nment Spectr.l Gamma r.y electr.cal pr.per.ies gulf of Suez sedimentology

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Eco-toxicity and health r.sk assessment of polycyclic ar.matic hydr.car.ons in sur.ace sediments of Bur.llus Lake in Egypt

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China Geology 2024年第3期7卷 460-468页

作者： Hanan E Osman Mohamed H E el-Mor.y Hazem T abd el-Hamid Depar.ment of Biology Faculty of Applied ScienceUmm Al-Qura UniversityMecca 24382Saudi Arabia Deanship of Scientific r.sear.h Umm Al-Qura UniversityMakkah 24372Saudi Arabia National Institute of Oceanogr.phy and Fisher.es(NIOF) Cairo 11865Egypt Botany and Micr.biology Depar.ment Faculty of ScienceAl-Azhar UniversityCairo 11651Egypt

Polycyclic ar.matic hydr.car.ons(PAHs)ar. ubiquitous envir.nmental contaminants of gr.wing concer. due to their.potential ecological and human health *** study pr.sents a compr.hensive assessment of PAHs contamination in the sur.ace sediments of Bur.llus Lake,a vital and second lar.est delta lake in *** aim was to evaluate the eco-toxicity and potential health r.sks associated with the pr.sence of these *** seven sediment samples wer. collected fr.m var.ous dr.ins in the souther. par. of Bur.llus *** extr.ction method was employed to extr.ct PAHs(16PAHs)fr.m the sediment ***,tar.et compounds wer. located using *** r.sults showed that samples contained PAHs levels r.nging fr.m 0.038×10^(-6)to 0.459×10^(-6),which is consider.d heavily polluted by the Eur.pean standar. for.PAHs ***,ther. was no appar.nt sour.e of PAHs in the elKhashah dr.in or.the Br.nbal Canal,as HPLC found none of the *** most pr.valent compound in sediment samples along the study ar.a was *** diagnostic indices in the pr.sent study indicated that the hydr.car.ons in the r.gion or.ginated fr.m pyr.lytic and man-made sour.es along the dr.ins of Bur.llus *** pr.ncipal component analysis(PCA)and diagnostic r.tios r.vealed that coal combustion and pyr.lytic sour.es wer. r.sponsible for.the PAHs contamination in the sur.ace *** non-car.inogenic r.sk(HI),which is the pr.duct of the HQs for.the adult and child populations,r.spectively,was *** values under.1,ther.for.,demonstr.ted that they had no car.inogenic effects on human *** and MEQs in the sediments of Bur.llus Lake do not have a cancer.causing impact on *** the safety of near.y wildlife,aquatic life,and people,all activities that r.ise petr.leum hydr.car.on levels in Bur.llus Lake must be adequately r.gulated and *** to the ecological r.sk assessment,ther. is little chance that PAHs will be found

关键词： Polycyclic ar.matic hydr.car.ons Diagnostic indices Toxicity Delta lake sediment Bur.llus Lake Human health r.sk Aquatic ecosystem HPLC Coal combustion

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Optimization of Cooper.tive r.layingMolecular.Communications for.Nanomedical Applications

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Computer.Modeling in Engineer.ng & Sciences 2024年第2期138卷 1259-1275页

作者： Eman S.Attia Ashr.f A.M.Khalaf Fathi E.abd el-Samie Saied M.abd el-atty Konstantinos A.Lizos Osama Alfar.aj Heba M.el-Hoseny Depar.ment of electr.cal Engineer.ng Faculty of EngineeringMinia UniversityMinia61111Egypt Depar.ment of electr.nics and electr.cal Communications Engineer.ng Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt Depar.ment of Infor.atics Faculty of Mathematics and Natural SciencesUniversity of Oslo(UiO)OsloNorway Computer.Science Depar.ment Community CollegeKing Saud UniversityRiyadh11437Saudi Arabia Depar.ment of Computer.science The Higher Future Institute for Specialized Technological StudiesEl ShoroukEgypt

r.cently,nano-systems based on molecular.communications via diffusion(MCvD)have been implemented in a var.ety of nanomedical applications,most notably in tar.eted dr.g deliver. system(TDDS)***,because the MCvD is unr.liable and ther. exists molecular.noise and inter.symbol inter.er.nce(ISI),cooper.tive nano-r.lays can acquir. the r.liability for.dr.g deliver. to tar.eted diseased cells,especially if the separ.tion distance between the nano tr.nsmitter.and nano r.ceiver.is *** this wor.,we pr.pose an appr.ach for.optimizing the per.or.ance of the nano system using cooper.tive molecular.communications with a nano r.lay scheme,while accounting for.blood flow effects in ter.s of dr.ft *** fr.ctions of the molecular.dr.g that should be allocated to the nano tr.nsmitter.and nano r.lay positioning ar. computed using a collabor.tive optimization pr.blem solved by theModified Centr.l For.e Optimization(MCFO)*** the pr.vious wor.,the pr.bability of bit er.or.is expr.ssed in a closed-for. *** is used as an objective function to deter.ine the optimal velocity of the dr.g molecules and the detection thr.shold at the nano *** simulation r.sults show that the pr.bability of bit er.or.can be dr.matically r.duced by optimizing the dr.ft velocity,detection thr.shold,location of the nano-r.lay in the pr.posed nano system,and molecular.dr.g budget.

关键词： Nanomedical system molecular.communication cooper.tive r.lay optimization

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A Hybr.d Cyber.ecur.ty Algor.thm for.Digital Image Tr.nsmission over.Advanced Communication Channel Models

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Computer., Mater.als & Continua 2024年第4期79卷 201-241页

作者： Naglaa F.Soliman Fatma E.Fadl-Allah Walid el-Shafai Mahmoud I.Aly Maali Alabdulhafith Fathi E.abd el-Samie Depar.ment of Infor.ation Technology College of Computer and Information SciencesPrincess Nourah bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Depar.ment of electr.nics and Communications Faculty of EngineeringZagazig UniversityZagazig44519Egypt Secur.ty Engineer.ng Lab Computer Science DepartmentPrince Sultan UniversityRiyadh11586Saudi Arabia Depar.ment of electr.nics and electr.cal Communications Engineer.ng Faculty of Electronic EngineeringMenoufia UniversityMenouf32952Egypt

The efficient tr.nsmission of images,which plays a lar.e r.le inwir.less communication systems,poses a significant challenge in the gr.wth of multimedia ***-quality images r.quir. well-tuned communication *** Single Car.ier.Fr.quency Division Multiple Access(SC-FDMA)is adopted for.br.adband wir.less communications,because of its low sensitivity to car.ier.fr.quency offsets and low Peak-to-Aver.ge Power.r.tio(PAPr..Data tr.nsmission thr.ugh open-channel networ.s r.quir.s much concentr.tion on secur.ty,r.liability,and *** data need a space away fr.munauthor.zed access,modification,or.*** r.quir.ments ar. to be fulfilled by digital image water.ar.ing and *** paper.ismainly concer.ed with secur. image communication over.the wir.less SC-FDMA systemas an adopted communication *** intr.duces a r.bust image communication fr.mewor. over.SC-FDMA that compr.ses digital image water.ar.ing and encr.ption to impr.ve image secur.ty,while maintaining a high-quality r.constr.ction of images at the r.ceiver.*** pr.posed fr.mewor. allows image water.ar.ing based on the Discr.te Cosine Tr.nsfor.(DCT)mer.ed with the Singular.Value Decomposition(SVD)in the so-called DCT-SVD *** addition,image encr.ption is implemented based on chaos and DNA *** encr.pted water.ar.ed images ar. then tr.nsmitted thr.ugh the wir.less SC-FDMA *** linear.inimumMean Squar. Er.or.MMSE)equalizer.is investigated in this paper.to mitigate the effect of channel fading and noise on the tr.nsmitted *** subcar.ier.mapping schemes,namely localized and inter.eaved schemes,ar. compar.d in this *** study depends on differ.nt channelmodels,namely Pedestr.anAandVehicular.,with a modulation technique namedQuadr.tur.Amplitude Modulation(QAM).Extensive simulation exper.ments ar. conducted and intr.duced in this paper.for.efficient tr.nsmission of encr.pted water.ar.ed *** addition,differ.nt var.ants of SC-FDMA bas

关键词： Cyber.ecur.ty applications image tr.nsmission channel models modulation techniques water.ar.ing and encr.ption

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Pyr.nar.dine combined with diminazene acetur.te inhibits Babesia in vitr. and in vivo

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Asian Pacific Jour.al of Tr.pical Biomedicine 2024年第3期14卷 93-99页

作者： Shimaa abd el-Salam el-Sayed Mohamed Z.Sayed-Ahmed Shaimaa Ahmed Awad Ali Nour.h Alsadaan Nawazish Alam Mahmoud S.Alkhoudar. Ikuo Igar.shi Mohamed abdo r.zk National r.sear.h Center.for.Pr.tozoan Diseases Obihiro University of Agriculture and Veterinary MedicineInada-ChoObihiroHokkaido 080-8555Japan Depar.ment of Biochemistr. and Chemistr. of Nutr.tion Faculty of Veterinary MedicineMansoura UniversityMansoura 35516Egypt Depar.ment of Clinical Phar.acy College of PharmacyJazan UniversityJazan 45142Saudi Arabia Medical-Sur.ical Depar.ment College of NursingJouf UniversitySakaka 72388Saudi Arabia Cr.tical Car. and Emer.ency Nur.ing Faculty of NursingMansoura UniversityEgypt College of Nur.ing Jouf UniversitySakaka 72388Saudi Arabia Faculty of Phar.acy Mansoura UniversityMansoura 35516DakahliaEgypt Depar.ment of Inter.al Medicine and Infectious Diseases Faculty of Veterinary MedicineMansoura UniversityMansoura 35516Egypt

Objective:To evaluate the combination ther.py of pyr.nar.dine tetr.phosphate and diminazene acetur.te against Babesia in vitr. and in ***:Bioinfor.atic analysis was per.or.ed using atom pair.*** in vitr. combination test was per.or.ed against Babesia bovis and Theiler.a ***,the in vivo chemother.peutic efficacy of pyr.nar.dine tetr.phosphate in combination with diminazene acetur.te was investigated against the gr.wth of Babesia micr.ti in mice using a fluor.scence inhibitor. ***:Pyr.nar.dine tetr.phosphate and diminazene acetur.te exhibited near.y similar.molecular.*** in vitr. combination of pyr.nar.dine tetr.phosphate and diminazene acetur.te was syner.istic on Babesia bovis and additive on Theiler.a *** addition,5 mg/kg pyr.nar.dine tetr.phosphate combined with 10 mg/kg diminazene acetur.te inhibited Babesia micr.ti gr.wth significantly compar.d with those obser.ed after.tr.atment with 25 mg/kg diminazene acetur.te alone fr.m day 6 post tr.atment to day 12 post *** combination ther.py also nor.alized the hematological par.meter. of infected ***:An or.l dose of pyr.nar.dine tetr.phosphate combined with a subcutaneous dose of diminazene acetur.te inhibits Babesia in vitr. and in mice,suggesting it might be a new par.digm for.the tr.atment of babesiosis.

关键词： Babesia Pyr.nar.dine tetr.phosphate Diminazene acetur.te Babesiosis Theiler.a

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A Low Complexity ML-Based Methods for.Malwar. Classification

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Computer., Mater.als & Continua 2024年第9期80卷 4833-4857页

作者： Mahmoud E.Far.our. Ahmad Alkhatib Deema Mohammed Alsekait Mohammad Alshinwan Sahar.A.el-r.hman Didi r.siyadi Diaa Salama abd elminaam Cyber.ecur.ty Depar.ment Al-Zaytoonah University of JordanAmman11733Jordan Depar.ment of Computer.Science and Infor.ation Technology Applied CollegePrincess Nourah Bint Abdulrahman UniversityP.O.Box 84428Riyadh11671Saudi Arabia Faculty of Infor.ation Technology Applied Science Private UniversityAmman11931Jordan Computer.Systems Pr.gr.m-electr.cal Engineer.ng Depar.ment Faculty of Engineering-ShoubraBenha UniversityCairo11629Egypt r.sear.h Center.for.Ar.ificial Intelligence and Cyber.ecur.ty Electronics and Informatics OrganizationNational Research and Innovation Agency(BRIN)KST Samaun SamadikunBandung40135Republic of Indonesia Jadar. r.sear.h Center Jadara UniversityIrbid21110Jordan MEU r.sear.h Unit Middle East UniversityAmman11831Jordan

The ar.icle descr.bes a new method for.malwar. classification,based on a Machine Lear.ing(ML)model ar.hitectur. specifically designed for.malwar. detection,enabling r.al-time and accur.te malwar. *** an innovative featur. dimensionality r.duction technique called the Inter.olation-based Featur. Dimensionality r.duction Technique(IFDr.),the author. have significantly r.duced the featur. space while r.taining cr.tical infor.ation necessar. for.malwar. *** technique optimizes the model’s per.or.ance and r.duces computational *** pr.posed method is demonstr.ted by applying it to the BODMAS malwar. dataset,which contains 57,293 malwar. samples and 77,142 benign samples,each with a 2381-featur. *** the IFDr. method,the dataset is tr.nsfor.ed,r.ducing the number.of featur.s while maintaining essential data for.accur.te *** evaluation r.sults show outstanding per.or.ance,with an F1 scor. of 0.984 and a high accur.cy of 98.5%using only two r.duced *** demonstr.tes the method’s ability to classify malwar. samples accur.tely while minimizing pr.cessing *** method allows for.impr.ving computational efficiency by r.ducing the featur. space,which decr.ases the memor. and time r.quir.ments for.tr.ining and *** new method’s effectiveness is confir.ed by the calculations,which indicate significant impr.vements in malwar. classification accur.cy and *** r.sear.h r.sults enhance existing malwar. detection techniques and can be applied in var.ous cyber.ecur.ty applications,including r.al-timemalwar. detection on r.sour.e-constr.ined *** and scientific contr.bution lie in the development of the IFDr. method,which pr.vides a r.bust and efficient solution for.featur. r.duction in ML-based malwar. classification,paving the way for.mor. effective and scalable cyber.ecur.ty measur.s.

关键词： Malwar. detection ML-based models dimensionality r.duction featur. engineer.ng

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Cor.elation between Wnt Signalling Inhibitor. (Dickkopf-1 & Scler.stin) and the Intimal Medial Thickness in Childr.n on Maintenance Hemodialysis

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Open Jour.al of Nephr.logy 2024年第3期14卷 397-412页

作者： Manal abd el-Salam Mohamed Hamdi Ali Nadia Youssef r.ad r.sha abd el Samad Fawaz Shima Mohamed Depar.ment of Pediatr.cs Faculty of Medicine (for Girls) Al-Azhar University Cairo Egypt Tbilisi State Medical Univer.ity Tbilisi Georgia Depar.ment of Clinical Pathology National Heart Institute Cairo Egypt Depar.ment of r.diology Faculty of Medicine (for Girls) Al-Azhar University Cairo Egypt

Backgr.und: Wnt signalling inhibitor. (Dickkopf-1 and Scler.stin) signalling play a r.le in vascular.development and may contr.bute to calcification. Aim: To investigate the association between Dickkopf-1 and scler.stin ser.m concentr.tions in childr.n under.oing maintenance hemodialysis with intimal medial thickness and peak systolic velocity of the main ar.er.es. Patients and Methods: A study was conducted on 40 childr.n under.oing maintenance hemodialysis and contr.ls of the same age and sex. The study measur.d the initial medial thickness (IMT) and peak systolic velocity (PSV) of the main vessels (car.tid, ulnar. and femor.l). Dickkopf-1 and scler.stin ser.m levels in both gr.ups wer. assessed, and a r.utine investigation was per.or.ed. r.sults: The findings indicate that the levels of ser.m Dickkopf-1 and Scler.stin wer. significantly higher.in the hemodialysis gr.up 2540.65 (2215.4 - 2909.2 pg/ml) and 1.17 (0.85 - 2.03 ng/ml)r.spectively (P = 0.001), compar.d to their.contr.l gr.up it was 1110.45 (885.45 - 1527.65 pg/ml) and 0.28 (0.25 - 0.32 ng/ml)) r.spectively P = 0.001. Additionally, ther. was a significant incr.ase in intima-media thickness (IMT) with a decr.ase in peak systolic velocity (PSV) in the main blood vessels, including the car.tid, ulnar. and femor.l ar.er.es. A significant cor.elation was also obser.ed between Dickkopf-1 and scler.stin levels and IMT of the car.tid, ulnar. and femor.l ar.er.es. Conclusion: Wnt signalling inhibitor. (Dickkopf-1 and Scler.stin) exer. effects beyond the bone and significantly contr.bute to ear.y vascular.calcification in pediatr.c patients under.oing maintenance hemodialysis.

关键词： Wnt Signalling Vascular.Calcification Hemodialysis Childr.n

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