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Acta Metallurgica Sinica(English Letters) 2024年第2期37卷 242-254页

作者： Ying Shen Xianfeng Shan Iniobong P.Etim muhammad ali siddiqui Yang Yang Zewen Shi Xuping Su Junxiu Chen Key Laboratory of Materials Surface Science and Technology of Jiangsu Province Changzhou UniversityChangzhou213164China Department of Stomatology The Affiliated Xinhua Hospital of Dalian UniversityDalian116000China Department of Physics University of CalabarCalabar540242Nigeria Metallurgical Engineering Department NED University of Engineering and TechnologyUniversity RoadKarachi75270Pakistan Ningbo No.2 Hospital Ningbo315010China

This research systematically examined the degradation,antibacterial effects,and biocompatibility of micro-arc oxidation(MAO)coatings with nano CuO and ZnO on extruded Mg *** copper(Cu)and Zinc(Zn)possess antibacterial *** findings demonstrated that adding ZnO will appreciably reduce the degradation rate of MAO-coating alloy due to the self-sealing micro ***+MAO coating exhibited excellent antibacterial performance,with an antibacterial rate of over 90%within 6 h co-cultured with Staphylococcus ***,the antibacterial rate of ZnO+MAO coating reached 90%after 12 h *** test using MG63 cell indicated that the incorporation of CuO and ZnO did not notably affect the cell viability rate of the ***,after 14 days of culture,the CuO+MAO and ZnO+MAO coated samples exhibited higher alkaline phosphatase(ALP)activity than the MAO-coated and uncoated samples,suggesting favorable osteogenic properties.

关键词： Copper oxide Zinc oxide Micro-arc oxidation(MAO)coating Corrosion behavior Antibacterial characteristics

Preliminary study of adsorption behavior of bovine serum albumin(BSA) protein and its effect on antibacterial and corrosion property of Ti-3Cu alloy

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Journal of Materials Science & Technology 2021年第21期80卷 117-127页

作者： muhammad ali siddiqui Ihsan Ullah Hui Liu Shuyuan Zhang Ling Ren Ke Yang Institute of Metal Research Chinese Academy of Sciences72 Wenhua RoadShenyang110016China School of Materials Science and Engineering University of Science and Technology of China96 Jinzhai RoadHefei230026China Department of Metallurgical Engineering NED University of Engineering and TechnologyUniversity RoadKarachi75270Pakistan

The adsorption behavior, antibacterial, and corrosion properties of a Ti-3 Cu alloy were studied in a phosphate-buffered saline solution containing 0, 1, 3, and 6 gL^(-1) bovine serum albumin protein at 37℃ and pH = 7.4(±0.2). The protein adsorption behavior was examined via cyclic voltammetry, secondary ions mass spectroscopy(SIMS), and angle-resolved X-ray photoelectron spectroscopy(ARXPS). The corrosion property was analyzed by the open circuit potential(OCP), potentiodynamic polarization(PD),and electrochemical impedance spectroscopy(EIS) examinations. The antibacterial test was conducted according to the GB/T 21510 China Standard. It was observed that the surface charge density(QA DS) was directly proportional to the amount of the adsorbed BSA protein, signifying that the protein adsorption was accompanied by the charge transfer, pointing to chemisorptions phenomena. BSA amino groups and other organic species were observed in the surface analysis examinations. It was shown that the formation of barrier complexes between the TiO_(2) oxide-layer and PBS solution resulted in decreasing the release of Cu-ions, which consequently reduced the antibacterial activity. On the other hand, these barrier complexes improved the corrosion resistance by increasing the charge transfer resistance and double-layer capacitance of the Ti-3 Cu alloy.

关键词： Bovine serum albumin protein Ti-3Cu alloy Antibacterial Corrosion Adsorption behavior

Optimized Mechanical Properties,Corrosion Resistance and Bactericidal Ability of Ti-15Zr-xCu Biomedical Alloys During Aging Treatment

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Acta Metallurgica Sinica(English Letters) 2022年第2期35卷 304-316页

作者： Sharafadeen Kunle Kolawole Ling Ren muhammad ali siddiqui Ihsan Ullah Hai Wang Shuyuan Zhang Ji Zhang Ke Yang School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shi-Changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Federal Polytechnic P.M.B.420OffaKwara StateNigeria

The effects of different aging conditions on the microstructure,strength,corrosion resistance,cytotoxicity and antibacterial ability of Ti-15Zr-xCu(3≤x≤7,wt%)(TZC)alloys were systematically *** evolution and behavior were analyzed by X-ray diffraction(XRD)patterns and scanning electron microscopy with energy-dispersive spectroscopy(SEM-EDS),while potentiodynamic polarization technique was employed to characterize the corrosion response of the alloys after solution-treatment and aging(STA).High-temperature aging at 660℃ for 4 h(660-4)gave the best combination of properties by enabling significant precipitation of the Cu-rich Ti_(2)Cu and Zr_(2)Cu compounds,and mild formation of the Zr_(7)Cu_(10) secondary *** high kinetics at this condition was beneficial to the complete precipitation and more homogeneous distribution of the intermetallic *** led to the inhibition of dislocation movements and allowed for significantly improved mechanical strengths with added ductility,availability of more Cu ions for the desired oligodynamic activity without evoking cytotoxicity,better corrosion resistance and very high antibacterial ability(over 99.5%),thus improving the overall properties of the TZC alloys for biomedical applications.

关键词： Ti-15Zr-xCu alloys Solution treatment and aging Cu-rich precipitates Improved strength Corrosion resistance Antibacterial ability

Preliminary study of microstructure, mechanical properties and corrosion resistance of antibacterial Ti-15Zr-xCu alloy for dental application

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Journal of Materials Science & Technology 2020年第15期47卷 31-43页

作者： Sharafadeen Kunle Kolawole Wang Hai Shuyuan Zhang Ziqing Sun muhammad ali siddiqui Ihsan Ullah Wei Song Frank Witte Ke Yang School of Materials Science and Engineering University of Science and Technology of ChinaHefei230026China Institute of Metal Research Chinese Academy of SciencesShenyang110016China Department of Prosthodontics Geriatric Dentistry and Craniomandibular DisordersAssmannshauser Strane 4-614197BerlinGermany Federal Polytechnic OffaP.M.B.420OffaKwara StateNigeria

Ti-15 Zr-xCu(3≤x≤7,wt.%) novel antibacterial and antibiofilm alloys with competitive mechanical properties,biological responses and corrosion resistance were designed and *** heat treatment on Ti-15 Zr-7 Cu(TZC-7 A),after holding for 2 h at slightly above their beta transus temperature(BTT) ensured their tensile strength(UTS),yield strength(YS) and hardness(HRV) were improved by31.2%,20% and 12.3% respectively compared to the control without Cu,Ti-15 Zr(T-15 ZA).Although the3 wt.% Cu alloy displayed the highest elongation(26%),the TZC-7 A alloy also possessed a good *** of evenly dispersed Ti2 Cu and Zr2 Cu Cu-rich intermetallic phases formed as interwoven and alternating lamellae within the α+β matrix as a result of Cu addition,as revealed by X-ray diffraction(XRD),scanning electron microscopy(SEM) and transmission electron microscopy(TEM).These greatly contributed to their strengthening and bactericidal *** 98% antibacterial effect against *** and *** have been imparted,coupled with excellent biofilm *** polarization curves showed that the TZC-7 A alloy possessed higher corrosion resistance than commercially pure titanium,cp-Ti;contact angle test revealed enhanced hydrophilicity;while confocal laser scanning microscopy(CLSM) and cell counting kit(CCK-8) assays also displayed drastically lowered bacterial adhesion rate with comparatively no *** attachment on all alloys was similar but the best spread was obtained on TZC-7 A after 24 *** developed alloy has good potential as an antibacterial implant material with combination of optimized properties.

关键词： Ti-Zr alloy Cu addition Antibacterial Mechanical properties Intermetallic phases

Effect of N_(2) partial pressure on comprehensive properties of antibacterial TiN/Cu nanocomposite coating

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International Journal of Minerals,Metallurgy and Materials 2023年第1期30卷 131-143页

作者： Hui Liu Yanhui Zhao Chuanshi Sui Yi Li muhammad ali siddiqui Susu Li Tong Li Shuyuan Zhang Hai Wang Tao Jin Ling Ren Ke Yang Ning Zhang School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Shi-changxu Innovation Center for Advanced Materials Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Shenyang SYRICI Testing Co. Ltd.Shenyang 110000China Department of Metallurgical Engineering NED University of Engineering and TechnologyKarachi 75270Pakistan Department of Nephrology Shenyang Chest HospitalShenyang 110044China School and Hospital of Stomatology China Medical UniversityShenyang 110002China

Foreign body reactions to the wear debris and corrosion products from the implants,and bacterial infections are the main factors leading to the implant *** order to resolve these problems,the antibacterial TiN/Cu nanocomposite coatings with various N_(2) partial pressures were deposited on 304 stainless steels(SS)using an arc ion plating(AIP)system,named TiN/Cu-x(x=0.5,1.0,1.5 Pa).The results of X-ray diffraction analysis,energy-dispersive X-ray spectroscopy,and scanning electron microscopy showed that the N_(2) partial pressures determined the Cu contents,surface defects,and crystallite sizes of TiN/Cu nanocomposite coatings,which further influenced the comprehensive *** the hardness and wear resistances of TiN/Cu coatings were enhanced with increase of the crystallite *** the co-actions of surface defects,crystallite sizes,and Cu content,TiN/Cu-1.0 and TiN/Cu-1.5 coatings possessed excellent corrosion ***,the biological tests proved that all the TiN/Cu coatings showed no cytotoxicity with strong antibacterial *** them,TiN/Cu-1.5 coating significantly promoted the cell proliferation,which is expected to be a novel antibacterial,corrosion-resistant,and wear-resistant coating on the surfaces of medical implants.

关键词： N_(2)partial pressure TiN/Cu coating wear resistance corrosion behavior antibacterial ability cytocompatibility

Decoding the fruit microbiome:A climate smart strategy to manage postharvest decays

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Horticultural Plant Journal 2024年第5期10卷 1061-1072页

作者： Manori Kuruppu Kong Lih Ling Phebe Ding Khairulmazmi Ahmad Asgar ali Yasmeen siddiqui Laboratory of Sustainable Agronomy and Crop Protection Institute of Plantation StudiesUniversiti Putra MalaysiaSerdang 43400Malaysia Department of Plant Protection Faculty of AgricultureUniversiti Putra MalaysiaSerdang 43400Malaysia Centre of Excellence for Post-harvest Biotechnology(CEFB) School of BiosciencesUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangorMalaysia Department of Biological Sciences College of ScienceKing Faisal UniversityAl Ahsa31982Saudi Arabia

There is an urgent necessity to shift our diets toward those rich in fruits and vegetables and at reduce postharvest losses of *** 20%e50%of fruits and vegetables are lost due to poor postharvest handling and pathogen infections in developing countries while it was estimated as 5%e35%in developed *** fruits have evolved with a plethora of microorganisms having important roles in maintaining fruit ***,little information is available on the dynamics,structure,and functional capacities of underpinning fruit *** present review discussed environmental conditions favoring fruit-harbored antagonists and their different modes of action for suppressing postharvest pathogens in *** also provides information on omics technologies such as next-generation sequencing(NGS),metaproteomics,metatranscriptomic,and metabolomics studies to characterize fruit *** the advent of NGS and meta-omics technologies,microbiome research could bring remarkable development and understanding in succeeding biological *** addition,they may provide us with a fundamental understanding of microclimate requirements for fruit microbiome establishment and microbiome shifts during post-harvest storage,which would be advantageous in developing composite biocontrol treatments for post-harvest decay management.

关键词： Biological control Food loss Fruit microbiome Meta-omics Microclimate Postharvest decay

How Agent Orange impacts prostate cancer risk,pathology,and treatment outcomes

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Current Urology 2024年第2期18卷 79-86页

作者： Awais Paracha Zohair siddiqui ali Abid Ekamjit Deol Fatima Waheed Zachary Hamilton Saint Louis University School of Medicine Saint LouisMOUSA Saint Louis University Saint LouisMOUSA New York Institute of Technology College of Osteopathic Medicine OldWestburyNYUSA Department of Surgery Division of UrologySaint Louis University School of MedicineSaint LouisMOUSA

Between 2.6 and 3.8 million veterans served in Vietnam while the US military dispersed Agent Orange(AO),although the exact number of exposed individuals is *** Orange,an herbicide,is a known risk factor for various cancers,including sarcoma and leukemia,but less is known about its link with prostate cancer(PC).Prostate cancer is the most commonly diagnosed malignancy in men and the fifth most common cause of cancer-related death in men *** 2023,approximately 288,300 patients will be given a diagnosis of PC,and an estimated 34,700 fatalities will occur in the United ***,whether the pathologic characteristics of PC among those exposed to AO differ from those in the general population remains *** review synthesizes the literature regarding the impact of AO exposure on PC incidence and disease course.A comprehensive PubMed literature search of articles published beginning in 1950 was performed using the primary search terms“Agent Orange,”“TCDD,”and“tetrachlorodibenzodioxin”and the secondary search terms“prostate cancer”or“prostate neoplasm.”The search was limited to studies that focused on human participants and were published in *** authors thoroughly reviewed the retrieved articles for relevancy to the study aims:discussion of PC diagnosis,prognosis,or management among patients exposed to *** 108 studies identified in our search,13 were included in this systematic *** within studies concerning AO exposure with relation to PC incidence,age at diagnosis or treatment initiation,and PC severity seemed to be mixed and generally ***,the literature seems to indicate that there are no significant differences in survivorship between exposed and unexposed veterans who are given a diagnosis of *** these heterogeneous outcomes,the evidence does not encourage a significantly different approach to the diagnosis and management of PC for veterans exposed to *** shouldmake case-by-case decision

关键词： Agent Orange 2,3,7,8-Tetrachlorodibenzo-p-dioxin Prostate cancer Veterans

Leptomeningeal metastases in prostate cancer:A review of the current literature

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Current Urology 2024年第3期18卷 159-166页

作者： Umar Durrani Kasem Rifai Maha Arshad Awais Paracha Ekamjit Deol Maria Paracha Fatima Waheed Zohair siddiqui ali Abid Esed Mustafic Wilson Rodriguez Zachary Hamilton Saint Louis University School of Medicine Saint LouisMOUSA University of Missouri School of Medicine ColumbiaMOUSA University of Virginia CharlottesvilleVAUSA New York Institute of Technology College of Osteopathic Medicine Old WestburyNYUSA Saint Louis University Saint LouisMOUSA Department of Neurology Saint Louis University School of MedicineSaint LouisMOUSA Division of Urology Department of SurgerySaint Louis University School of MedicineSaint LouisMOUSA

Leptomeningeal metastasis/leptomeningeal carcinomatosis(LMC;terms used interchangeably)is an inflammatory complication of primary tumors that involves the spread of the disease to the meninges(specifically the arachnoid and pia maters)and spinal *** the United States,approximately 110,000 new cases are diagnosed each year,and the prognosis is usually *** of LMC include cognitive impairment,cranial nerve dysfunction,ischemic stroke,and *** survival times of untreated and treated LMC are approximately 4–6 weeks and 2–4 months,*** carcinomatoses are usually metastatic cancers that spread to the central nervous *** lung and breast cancers have a clearly defined relationship with LMC,it remains unclear whether prostate cancer(PC)is also directly associated with *** determine whether such association exists,we conducted a PubMed review of the literature on patients with PC with coexisting *** search yielded 23 case reports of patients with preexisting PC who developed *** addition,2 retrospective cohort studies were *** findings were identified in the revised cases and *** first 3 findings were related to the progression of the disease:patients presenting with neurological disease symptoms were in remission from PC for 7 years on average,LMCs tended to occur after other cancer diagnoses,and the disease had already rapidly progressed by the time the symptoms were *** diagnosis,the major finding was that most LMCs were detected by magnetic resonance imaging(which does not detect early dissemination),and it was suggested that single-photon emission computed tomography or positron emission tomography imaging could be used for earlier ***,in terms of treatment,the main finding was that treatment was palliative rather than curative and that prognosis remained poor despite *** the basis of these results,we recommend for individuals with risk facto

关键词： Leptomeningeal carcinomatosis Prostate cancer Prostate cancer metastasis

Incidence and predictors of hypocalcemia in end-stage renal disease patients on denosumab therapy: A systematic review and metaanalysis

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World Journal of Meta-Analysis 2024年第3期12卷 68-78页

作者： Abdul Hannan siddiqui Misbah Shaikh Afia Salman muhammad Ahmed ali Fahim Fizzah Batool Tahreem Mari Sarah Musani Muneeb Fareed Rooma Rehan Amna Hassni Urooj Nizami Ayesha Amir Abdul Moeed Salim R Surani Department of Internal Medicine Dow University of Health SciencesKarachi 74200SindhPakistan Department of Medicine&Pharmacology Texas A&M UniversityCollege StationTX 77843United States

BACKGROUND Denosumab inhibits the receptor activator of nuclear factor *** markedly increases bone mineral density and has been proven to reduce the risk of ***,numerous adverse effects,notably hypocalcemia,are prevalent in patients with end-stage renal disease(ESRD).AIM To analyze the incidence and predictors of hypocalcemia caused by denosumab compared to control in patients with *** We conducted this study in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-analyses ***,Scopus,Cochrane Central,and EMBASE were systematically searched from inception through March *** original studies investigating the effects of denosumab on patients with ESRD compared to control were *** primary outcomes of our study were the incidence of mild,severe,and very severe *** outcomes included serum levels of intact parathyroid hormone,calcium,and *** results were pooled and analyzed using a random-effects *** Seven articles comprising 3240 patients were included in our *** treated with denosumab had a significantly increased incidence of mild hypocalcemia[risk ratio(RR):2.79;95%confidence interval(CI):0.99-7.91;P=0.05;I²=37%]and of very severe hypocalcemia(RR:9.58;95%CI:1.58-57.98;P=0.01;I²=49%).However,an increase in the occurrence of severe hypocalcemia was non-significant(RR:4.23;95%CI:0.47-38.34;P=0.20;I²=96%).Alternatively,denosumab showed a significant decrease in serum intact parathyroid hormone[mean difference(MD):-433.20,95%CI:-775.12 to-91.28,I2=98%,P=0.01],while there was a non-significant decrease in phosphate(MD:-0.47,95%CI:-1.35 to 0.41,I2=88%,P=0.30)and calcium levels(MD:-0.33,95%CI:-0.95 to 0.29,I2=94%,P=0.29).CONCLUSION Our study demonstrated that denosumab is significantly associated with mild and very severe hypocalcemia in patients with ESRD making it necessary to detect and prevent this side effect of treatment.

关键词： Denosumab End-stage renal disease Hypocalcemia Parathyroid hormone Dialysis

Algebraic Properties for Molecular Structure of Magnesium Iodide

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Computer Modeling in Engineering & Sciences 2023年第5期135卷 1131-1146页

作者： ali N.A.Koam ali Ahmad muhammad Azeem muhammad Kamran siddiqui Department of Mathematics College of ScienceNew CampusJazan UniversityJazanSaudi Arabia College of Computer Science and Information Technology Jazan UniversityJazanSaudi Arabia Department of Mathematics Riphah Institute of Computing and Applied SciencesRiphah International UniversityLahorePakistan Department of Mathematics COMSATS University IslamabadLahorePakistan

As an inorganic chemical,magnesium iodide has a significant crystalline *** is a complex and multifunctional substance that has the potential to be used in a wide range of medical *** graph theory,on the other hand,provides a sufficient and cost-effective method of investigating chemical structures and networks.M-polynomial is a relatively new method for studying chemical networks and structures in molecular graph *** displays numerical descriptors in algebraic form and highlights molecular features in the form of a polynomial *** present a polynomials display of magnesium iodide structure and calculate several M-polynomials in this paper,particularly the M-polynomials of the augmented Zagreb index,inverse sum index,hyper Zagreb index and for the symmetric division index.

关键词： Magnesium iodide M-polynomials algebraic properties of magnesium iodide algebraic formation of numerics of magnesium iodide