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The Differences of Cord Blood Troponin I (TnI) Level between Normal and Asphyxiated Infants and Its Correlation with APGAR Score

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Open Journal of Obstetrics and Gynecology 2014年第15期4卷 954-960页

作者： amillia siddiq Sofie R. Krisnadi Jusuf S. Effendi Department of Obstetrics and Gynecology Faculty of Medicine/Hasan Sadikin Hospital Padjadjaran University Bandung Indonesia

Asphyxia could increase infant morbidity and mortality. Ante- and intrapartum cardiotocography (CTG) examination could lead to a false positive diagnosis of asphyxia (fetal distress). Troponin I (TnI) is an important factor to the pathogenesis of asphyxia. Cord blood TnI level is increased in infants with fetal cardiac dysfunction, causing pathological CTG and low APGAR score (<7). In the future, TnI is expected to reduce false positive diagnosis of asphyxia caused by CTG. This research was conducted to examine and analyze the differences of cord blood TnI level between normal and asphyxiated infants and to determine the correlation between TnI level and APGAR score. An observational analytical cross sectional study was conducted to a total of 36 patients with asphyxiated infants (18 patients) and normal infants (18 patients). Subjects were selected according to the inclusion and exclusion criteria. Cardiotocography, TnI level, and APGAR score were examined. Umbilical cord blood samples were taken from each subject for the measurement of TnIlevel using a highly sensitive indirect sandwich Enzyme Linked Immunosorbent Assay (ELISA). Statistical analysis was performed by Mann-Whitney and Rank Spearman correlation coefficient test. Cord blood TnI level of asphyxia andnormal groups were 1615.77 ± 1199.98 pg/mL and 819.88 ± 145.82 pg/mLrespectively (p ≤ 0.05). Rank Spearman correlation coefficient between cord blood TnI level and 1’ and 5’ APGAR score was -0.523 (p = 0.026;p ≤ 0.05)and -0.502 respectively (p = 0.034;p ≤ 0.05). There was a statistically significant difference between cord blood TnI level of asphyxia and normal groups;cord blood TnI level of asphyxia group was higher than normal group. Furthermore, negative correlation was observed between cord blood TnI level and APGAR score.

关键词： APGAR Score Asphyxia Cord Blood Troponin I Level TnI

The Differences of Cord Blood Troponin I (TnI) Level between Normal and Asphyxiated Infants and Its Correlation with APGAR Score

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Focus on current and emerging treatment options for glioma:A comprehensive review

Open Journal of Obstetrics and Gynecology（妇产科期刊） 2014年第15期

作者： amillia siddiq Sofie R. Krisnadi Jusuf S. Effendi

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World Journal of Clinical Oncology 2024年第4期15卷 482-495页

作者： Brandon Lucke-Wold Burhanuddin Sohail Rangwala Muhammad Ashir Shafique Mohammad Arham siddiq Muhammad Saqlain Mustafa Fnu Danish Rana Muhammad Umer Nasrullah Noor Zainab Abdul Haseeb Department of Neurosurgery University of FloridaGainesvilleFL 32608United States Department of Neurosurgery Jinnah Sindh Medical UniversityKarachi 75510Pakistan Department of Neurosurgery Army Medical CollegeRawalpindi 46000Pakistan

This comprehensive review delves into the current updates and challenges associated with the management of low-grade gliomas(LGG),the predominant primary tumors in the central nervous *** a general incidence rate of 5.81 per 100000,gliomas pose a significant global concern,necessitating advancements in treatment techniques to reduce mortality and *** review places a particular focus on immunotherapies,discussing promising agents such as Zotiraciclib and ***,a CDK9 inhibitor,has demonstrated efficacy in glioblastoma treatment in preclinical and clinical studies,showing its potential as a therapeutic ***,a viral immunotherapy,induces inflammation in glioblastoma and displays positive outcomes in both adult and pediatric *** of immunotherapy extends to Pembrolizumab,Nivolumab,and Entrectinib,revealing the challenges and variabilities in patient *** promising preclinical data,the monoclonal antibody Depatuxizumab has proven ineffective in glioblastoma treatment,emphasizing the critical need to understand resistance *** review also covers the success of radiation therapy in pediatric LGG,with evolving techniques,such as proton therapy,showing potential improvements in patient quality of *** treatment is discussed in the context of achieving a balance between preserving the patient’s quality of life and attaining gross total resection,with the extent of surgical resection significantly influencing the survival *** addition to advancements in cancer vaccine development,this review highlights the evolving landscape of LGG treatment,emphasizing a shift toward personalized and targeted *** research is essential for refining strategies and enhancing outcomes in the management of LGG.

关键词： Low-grade gliomas Monoclonal antibody Lerapolturev Glioblastoma CDK9 inhibitor

Properties of Phosphoric Acid Doped Poly(benzimidazole/sulfone/siloxane/amide)/Sulfonated Polystyrene/Silica Nanoparticle-based Proton Exchange Membranes for Fuel Cells

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Chinese Journal of Polymer Science 2014年第10期32卷 1319-1328页

作者： Ayesha Kausar Muhammad siddiq Nanosciences and Catalysis Division National Centre For Physics Quaid-i-Azam University CampusIslamabad 44000 Pakistan Department of Chemistry Quaid-i-Azam University Islamabad Pakistan

New siloxane and sulfone containing poly（benzimidazole/sulfone/siloxane/amide）（PBSSA） has been prepared for the formation of hybrid membranes （PBSSA/PS-S/SiNPs） with sulfonated polystyrene （PS-S） and 0.1 wt%-2 wt% silica nanoparticles （SiNPs）. Field emission scanning electron micrographs showed good dispersion of filler, formation of dense nanoporous honeycomb like structure and uniform ionic pathway in these hybrids. The porous membrane structure was responsible for the fine water retention capability and higher proton conductivity of the new hybrids. Increasing the amount of nanoparticles from 0.1 wt% to 2 wt% increased the tensile stress of acid doped PBSSA/PS-S/SiNPs nanocomposites from 65.7 MPa to 68.5 MPa. A relationship between nanofiller loading and thermal stability of the membranes was also experientially studied, as the glass transition temperature of phosphoric acid doped PBSSAJPS-S/SiNPs nanocomposites increased from 207℃ to 215 ℃. The membranes also had higher ion exchange capacity （IEC） around 2.01 mmol/g to 3.01 mmol/g. The novel membranes with high IEC value achieved high proton conductivity of 1.10-2.34 S/cm in a wide range of humidity values at 80 ~C which was higher than that of perfluorinated Nafion 117 membrane （1.1 × 10^-1 S/cm） at 80 ~C （94% RH）. A H2/O2 fuel cell using the PBSSA/PS-S/SiNP 2 （IEC 3.01 retool/g） showed better performance than that of Nation 117 at 40 ℃ and 30% RH.

关键词： Poly(benzimidazole/sulfone/siloxane/amide) Sulfonated polystyrene Silica nanoparticles Ion exchange capacity Proton conductivity.

GRAFTING OF POLY(SODIUM STYRENESULFONATE) ONTO GOLD SURFACE FROM NaNO_3 SOLUTION

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Chinese Journal of Polymer Science 2011年第5期29卷 575-579页

作者： Iram Bibi Mohammad siddiq Department of Chemistry Quaid-i-Azam University Islamabad 45320Pakistan

The chemical grafting of thiol terminated poly（sodium styrenesulfonate）（HS-PSSS） chains from sodium nitrate （NaNO3） salt solution to a gold surface was investigated with a quartz crystal microbalance with dissipation monitoring （QCM-D） in different salt concentrations, It was found that at low salt concentration grafting density of HS-PSSS was low and the grafted chains adopted a mushroom conformation. With the increase of salt concentration polyelectrolyte chains underwent a transition toward coiled state due to reduction of electrostatic repulsion and as a result more chains were grafted on the surface, When the grafting density reached a certain limit after which further grafting caused repulsion between already grafted HS-PSSS chains and as a result grafted chains adopted a brush conformation.

关键词： Poly(sodium styrenesulfonate) Quartz crystal microbalance Kinetics of grafting.

Thermal, Mechanical and Electrical Studies of Novel Shape Memory Polyurethane/Polyaniline Blends

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Chinese Journal of Polymer Science 2015年第9期33卷 1313-1324页

作者： Rabia Sattar Ayesha Kausar Muhammad siddiq Department of Chemistry Quaid-i-Azam University Nanosciences and Catalysis Division National Centre for Physics Quaid-i-Azam University Campus

Shape memory polymer （SMP） blends based on polyurethane （PU） and polyaniline （PANI） were prepared via chemical in situ polymerization process. The thermal, mechanical, electrical and shape memory properties were investigated. The structural characterization and morphology of the polymer blends were inspected by Fourier transform infrared （FTIR） and scanning electron microscopy （SEM）, respectively. The 1 wt% of PANI loading enhanced the thermal stability of the system up to 339 ~C. According to differential scanning calorimetry （DSC）, the glass transition temperature （Tg） and melting temperature （Tm） of PU/PANI blends increased with the polyaniline loading （0.1 wt%-l wt%）. Improved mechanical properties such as tensile strength and Young＇s modulus of PU matrix were also observed with PANI. Moreover, the electrical conductivity of PU/PANI blends was also found to be a function of PANI loading. Remarkable recoverability of thermally triggered shape memory （SM） behavior to the extent of 96% was achieved for 1 wt% PANI blend.

关键词： Shape memory Polyurethane Polyaniline Blends Conductivity.

Cobalt and sulfur co-doped nano-size TiO_2 for photodegradation of various dyes and phenol

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Journal of Environmental Sciences 2015年第11期27卷 100-109页

作者： Asima siddiqa Dilshad Masih Dalaver Anjum Muhammad siddiq KAUST Catalysis Center King Abdullah University of Science and Technology (KAUST) National Centre for Physics Quaid-i-Azam University Complex Chemistry Department Quaid-i-Azam University Imaging and Characterization Lab KAUST

Various compositions of cobalt and sulfur co-doped titania nano-photocatalyst are synthesized via sol–gel method. A number of techniques including X-ray diffraction（XRD）, ultraviolet–visible（UV–Vis）, Rutherford backscattering spectrometry（RBS）, thermal gravimetric analysis（TGA）Raman, N2 sorption, electron microscopy are used to examine composition, crystalline phase, morphology, distribution of dopants, surface area and optical properties o synthesized materials. The synthesized materials consisted of quasispherical nanoparticles of anatase phase exhibiting a high surface area and homogeneous distribution o dopants. Cobalt and sulfur co-doped titania demonstrated remarkable structural and optical properties leading to an efficient photocatalytic activity for degradation of dyes and phenol under visible light irradiations. Moreover, the effect of dye concentration catalyst dose and p H on photodegradation behavior of environmental pollutants and recyclability of the catalyst is also examined to optimize the activity of nano-photocatalys and gain a better understanding of the process.

关键词： Photocatalysis Nanoparticles Co-doped Ti O2 Dye degradation Phenol

MICELLAR PARAMETERS OF DIBLOCK COPOLYMERS AND THEIR INTERACTIONS WITH IONIC SURFACTANTS

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Chinese Journal of Polymer Science 2012年第2期30卷 217-226页

作者： Noor Rehman Abbas Khan Iram Bibi Mohammad siddiq Department of Chemistry Quaid-I-Azam UniversityIslamabad 45320Pakistan Instituto de Quimica Universidade Federal do Rio Grande do SulUFRGS PO Box 15010CEP 91501-930Porto Alegre/RS/Brazil Department of Chemistry Abdul Wali Khan UniversityMardan K-PukhtoonkhwaPakistan

The interactions of non-ionic amphiphilic diblock copolymer poly（oxyethylene/oxybutylene）（E39B18） with anionic surfactant sodium dodecyl sulphate （SDS） and cationic surfactant hexadecyltrimethylammonium bromide （CTAB） were studied by using various techniques such as surface tension, conductivity, steady-state fluorescence and dynamic light scattering. Surface tension measurements were used to determine the critical micelle concentration （CMC） and thereby the free energy of micellization （AGmic）, free energy of adsorption （AG^ds）, surface excess concentration （F） and minimum area per molecule （A）. Conductivity measurements were used to determine the critical micelle concentration （CMC）, critical aggregation concentration （CAC）, polymer saturation point （PSP）, degree of ionization （tr） and counter ion binding （l]）. Dynamic light scattering experiments were performed to check the changes in physiochemical properties of the block copolymer micelles taken place due to the interactions of diblock copolymers with ionic surfactants. The ratio of the first and third vibronic peaks （11/Is） indicated the polarity of the pyrene micro environment and was used for the detection of micelle as well as polymer-surfactant interactions. Aggregation number （N）, number of binding sites （n） and free energy of binding （AGb） for pure surfactants as well as for polymer-surfactant mixed micellar systems were determined by the fluorescence quenching method.

关键词： Surface tension Conductivity Dynamic light scattering steady-state fluorescence Micellization.

Mixed Matrix Membranes of Polysulfone/Polyimide Reinforced with Modified Zeolite Based Filler: Preparation, Properties and Application

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Chinese Journal of Polymer Science 2018年第1期36卷 65-77页

作者： Sedra Tul Muntha Muhammad siddiq Ayesha Kausar Anum Khan Department of Chemistry Quaid i Azam University Department of Microbiology Quaid i Azam University

In this work, polysulfone/polyimide（PSf/PI） mixed matrix membranes were fabricated by reinforcement of modified zeolite（MZ） particles through solution casting method for investigation of antibacterial activity against two gram negative bacteria（Salmonella typhi, Klebsella pneumonia） and two gram positive bacteria（Staphylococcus aureus, Bacillus subtilis）. The modified zeolite particles were incorporated to PSf and PI matrix and the influence of these particles on thermal, mechanical and structural properties was evaluated. The morphological evolution was investigated through scanning electron microscopy（SEM） and transmission electron microscopy（TEM） analysis, which revealed good compatibility between organic polymer matrix and inorganic filler. Mechanical stability was investigated by tensile testing while thermal analysis was evaluated by thermogravimetric analysis（TGA） and differential scanning calorimetry（DSC）. This revealed improvement in thermal properties with increasing filler concentration from 1 wt% to 10 wt%. Structural analysis was successfully done using X-ray diffraction analysis（XRD） and Fourier transform infrared（FTIR） spectroscopy. Solvent content of fabricated mixed matrix membranes was observed to decrease while moving from more hydrophilic to less hydrophilic solvent. However, addition of filler content enhanced the porosity of fabricated membranes. The synthesized mixed matrix membranes exhibited good antibacterial activity and the highest activity was shown by PSf/PI/MZ mixed matrix membrane. Therefore, the combination effect of PSf, PI and MZ sufficiently enhanced the antibacterial activity of mixed matrix membranes.

关键词： Modified zeolite Polysulfone/polyimide blend membrane Mixed matrix membrane Thermal analysis Antibacterial activity