检索结果-南通市图书馆

雌激素替代疗法治疗轻到中度Alzheimer病：随机对照试验

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

美国医学会杂志（中文版） 2000年第6期19卷 282-290页

作者： Ruth A. Mulnard, RN, DNSc Anthony Gamst, PhD michael grundman, md,mph Ronald Thomas, PhD Leon J. Thal, md Alzheimer病协作组 Carl W. Cotman, PhD Claudia Kawas, md Christopher H. van Dyck, md Mary Sano, PhD Rachelle Doody, md, PhD Elizabeth Koss, PhD Eric Pfeiffer, md Shelia Jin, md, mph

背景：几项小型临床试验提示雌激素替代疗法可能有助于女性Alzheimer病（AD）患者的治疗。　　目的：确定雌激素替代疗法能否改善轻到中度女性AD患者总体功能、认知或日常生活能力。　　设计：Alzheimer病协作组于1995年10月至1999年1... 详细信息

背景：几项小型临床试验提示雌激素替代疗法可能有助于女性Alzheimer病（AD）患者的治疗。　　目的：确定雌激素替代疗法能否改善轻到中度女性AD患者总体功能、认知或日常生活能力。　　设计：Alzheimer病协作组于1995年10月至1999年1月进行的一项随机、双盲、安慰剂对照临床试验。　　参加单位：美国32个研究中心。　　受试对象：总共120例轻到中度女性AD患者。细微精神状态检查评分介于12～28分间，既往已行子宫切除术。　　干预：受试者随机服用雌激素0.625 mg/d（n=42）、1.25 mg/d（n=39）或者剂型相同的安慰剂（n=39）。1例患者于随机后接受药物治疗前退出试验；97例完成试验。　　主要结果评定：主要结果评定指标为临床整体印象的改变（CGIC），分值为7分，采用意向治疗(intent-to-treat)分析。次要指标包括其他总评估以及情绪、特殊认知功能（记忆、注意力和语言）、运动功能和日常生活能力；于随访 2、6、12和15个月时，对雌激素组与安慰剂组进行比较。　　结果：雌激素组与安慰剂组CGIC评分为5.1比5.0 (P=0.43)；雌激素组80%的患者恶化，而安慰剂组74%恶化(P=0.48)。除临床痴呆评分提示雌激素组恶化外(雌激素组与安慰剂组相比治疗后平均变化为0.5比0.2，P=0.01)，两组次要结果指标无显著差异。　　结论：雌激素替代治疗1年不能延缓轻、中度女性AD患者病情的进展，整体功能、认知和功能预后亦无改善。研究结果不支持雌激素对这种疾病有治疗作用的结论。雌激素对AD的潜在预防作用尚需进一步研究。

关键词：早老性痴呆雌激素替代疗法

The link between intracellular calcium signaling and exosomal PD-L1 in cancer progression and immunotherapy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第1期11卷 321-334页

作者： md Rakibul Alam md Mizanur Rahman Zhiguo Li Department of Toxicology and Cancer Biology College of MedicineUniversity of KentuckyLexingtonKY 40506USA Department of Medicine(Nephrology) Faculty of Medicine and DentistryUniversity of AlbertaEdmontonAlberta T6E2H7Canada

Exosomes are small membrane vesicles containing microRNA,RNA,DNA fragments,and proteins that are transferred from donor cells to recipient *** cells release exo-somes to reprogram the factors associated with the tumor microenvironment(TME)causing tu-mor metastasis and immune *** evidence revealed that cancer cell-derived exosomes carry immune inhibitory molecule program death ligand 1(PD-L1)that binds with re-ceptor program death protein 1(PD-1)and promote tumor progression by escaping immune ***,some FDA-approved monoclonal antibodies are clinicallyused for cancer treatment by blocking PD-1/PD-L1 *** notable treatment outcomes,some pa-tients show poor drug *** PD-L1 plays a vital role in lowering the treatment response,showing resistance to PD-1/PD-L1 blockage therapy through recapitulating the ef-fect of cell surface *** enhance therapeutic response,inhibition of exosomal PD-L1 is *** signaling is the central regulator of tumorigenesis and can regulate exosome biogenesis and secretion by modulating Rab GTPase family and membrane fusion ***-mune checkpoints are also connected with calcium signaling and calcium channel blockers like amlodipine,nifedipine,lercanidipine,diltiazem,and verapamil were also reported to suppress cellular PD-L1 ***,to enhance the PD-1/PD-L1 blockage therapy response,the reduction of exosomal PD-L1 secretion from cancer cells is in our therapeutic *** this review,we proposed a therapeutic strategy by targeting calcium signaling to inhibit the expression of PD-L1-containing exosome levels that could reduce the anti-PD-1/PD-L1 therapy resistance and increase the patient's drug response rate.

关键词： Calcium signaling CD8^(+)T cells Exosomal PD-L1 Exosomes biogenesis Immunosuppression Immunotherapy

Diabetic cardiomyopathy:Importance of direct evidence to support the roles of NOD-like receptor protein 3 inflammasome and pyroptosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Diabetes 2024年第8期15卷 1659-1662页

作者： Lu Cai Yi Tan md Shahidul Islam michael Horowitz Kupper A Wintergerst Pediatric Research Institute Departments of PediatricsRadiation OncologyPharmacology and ToxicologyUniversity of LouisvilleWendy Novak Diabetes InstituteNorton Children’s HospitalLouisvilleKY 40202United States Department of Biochemistry School of Life SciencesUniversity of KwaZulu-NatalDurban 4000KwaZulu-NatalSouth Africa Department of Medicine University of AdelaideAdelaide 5005Australia Pediatric Research Institute Division of EndocrinologyDepartment of PediatricsWendy Novak Diabetes InstituteNorton Children’s HospitalUniversity of LouisvilleLouisvilleKY 40202United States

Recently,the roles of pyroptosis,a form of cell death induced by activated NODlike receptor protein 3(NLRP3)inflammasome,in the pathogenesis of diabetic cardiomyopathy(DCM)have been extensively ***,most studies have focused mainly on whether diabetes increases the NLRP3 inflammasome and associated pyroptosis in the heart of type 1 or type 2 diabetic rodent models,and whether various medications and natural products prevent the development of DCM,associated with decreased levels of cardiac NLRP3 inflammasome and *** direct link of NLRP3 inflammasome and associated pyroptosis to the pathogenesis of DCM remains unclear based on the limited evidence derived from the available studies,with the approaches of NLRP3 gene silencing or pharmaceutical application of NLRP3 specific *** thus emphasize the requirement for more systematic studies that are designed to provide direct evidence to support the link,given that several studies have provided both direct and indirect evidence under specific *** editorial emphasizes that the current investigation should be circumspect in its conclusion,i.e.,not overemphasizing its role in the pathogenesis of DCM with the fact of only significantly increased expression or activation of NLRP3 inflammasome and pyroptosis in the heart of diabetic rodent *** clear-cut evidence-based causative roles of NLRP3 inflammasome and pyroptosis in the pathogenesis of DCM can help to develop effective and safe medications for the clinical management of DCM,targeting these biomarkers.

关键词： Diabetic cardiomyopathy Nucleotide oligomerization domain NOD-like receptor protein 3 inflammasome Cardiac cell death Pyroptosis

Synergistic enhancement of photocatalytic and antimicrobial efficacy of nitrogen and erbium co-doped ZnO nanoparticles

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第5期42卷 859-868,I0002页

作者： Sudipta Mondal Moniruzzaman Jamal Sikder Ashikuzzaman Ayon md Jannatul Ferdous Anik md Muktadir Billah Department of Materials and Metallurgical Engineering Bangladesh University of Engineering and TechnologyDhaka1000Bangladesh School of Materials Engineering Purdue UniversityWest LafayetteIN47907USA Department of Materials Science and Engineering University of CaliforniaBerkeleyCA94720USA Department of Materials Science and Engineering Northwestern UniversityEvanstonI28USA

Using the chemical co-precipitation approach,a series of nitrogen(N) and erbium(Er) co-doped ZnO nanoparticles(NPs) was effectively synthesized to enhance the photocatalytic and antibacterial *** characterization techniques,including X-ray diffraction(XRD),X-ray photoelectron spectro scopy(XPS),scanning electron microscopy(SEM),UV-vis,and photoluminescence(PL) spectroscopy,were carried out to validate the evaluated photocatalytic and antibacterial *** analysis confirms the pure wurtzite ZnO phase without the presence of any secondary *** analysis confirms the succe ssful incorporation of nitrogen and erbium into the ZnO *** optical bandgap of ZnO calculated from UV-vis spectroscopy shows a redshift after Er-N co-doping,with the lowest bandgap of 3.215 eV calculated for Zn_(0.97)Er_(0.03)N_(0.01)O_(0.99) *** images demonstrate the formation of nanorods after N-Er co-doping,followed by gradually increase d rod diameter and length after N-Er ***,the photocatalytic activities of ZnO samples we re measured by their ability to facilitate the photodegradation of Rhodamine B under UV *** with 1 mol% N doping exhibits 88% photodegradation of RhB under UV light within 360 min,and the photodegradation and antibacterial activity are greatly improved with Er *** fact,3 mol% Er-1 mol% N doped ZnO NPs demonstrate the highest photocatalytic activity,with approximately 96% degradation after 360 min,as well as superior antibacterial activity against Staphylococcus aureus(Gram-positive bacteria) and Pseudomonas aeruginosa(Gram-negative bacteria) with the highest zone of inhibition(ZOI) of 16 nm,due to nanorod formation,increased reactive oxygen species(ROS),and decreased electron-hole recombination,as validated by SEM,XPS,and PL spectroscopy.

关键词： Chemical co-precipitation Co-doping Bandgap Photocatalysis Rare earths Antimicrobial

Impact of cancer diagnosis on life expectancy by area-level socioeconomic groups in New South Wales, Australia: a population-based study

在线全文

学校读者我要写书评

暂无评论

Cancer Biology & Medicine 2024年第8期21卷 692-702页

作者： md Mijanur Rahman michael David David Goldsbury Karen Canfell Kou Kou Paramita Dasgupta Peter Baade Xue Qin Yu The Daffodil Centre The University of SydneyA Joint Venture with Cancer Council NSWSydneyNSW 1340Australia School of Medicine and Dentistry Griffith UniversityGold CoastQLD 4222Australia Cancer Council Queensland BrisbaneQLD 4006Australia

Objective: Improvement in cancer survival over recent decades has not been accompanied by a narrowing of socioeconomic disparities. This study aimed to quantify the loss of life expectancy(LOLE) resulting from a cancer diagnosis and examine disparities in LOLE based on area-level socioeconomic status(SES).Methods: Data were collected for all people between 50 and 89 years of age who were diagnosed with cancer, registered in the NSW Cancer Registry between 2001 and 2019, and underwent mortality follow-up evaluations until December 2020. Flexible parametric survival models were fitted to estimate the LOLE by gender and area-level SES for 12 common ***: Of 422,680 people with cancer, 24% and 18% lived in the most and least disadvantaged areas, respectively. Patients from the most disadvantaged areas had a significantly greater average LOLE than patients from the least disadvantaged areas for cancers with high survival rates, including prostate [2.9 years(95% CI: 2.5±3.2 years) vs. 1.6 years(95% CI: 1.3±1.9 years)] and breast cancer [1.6 years(95% CI: 1.4±1.8 years) vs. 1.2 years(95% CI: 1.0±1.4 years)]. The highest average LOLE occurred in males residing in the most disadvantaged areas with pancreatic [16.5 years(95% CI: 16.1±16.8 years) vs. 16.2 years(95% CI: 15.7±16.7 years)] and liver cancer [15.5 years(95% CI: 15.0±16.0 years) vs. 14.7 years(95% CI: 14.0±15.5 years)]. Females residing in the least disadvantaged areas with thyroid cancer [0.9 years(95% CI: 0.4±1.4 years) vs. 0.6 years(95% CI: 0.2±1.0 years)] or melanoma [0.9 years(95% CI: 0.8±1.1 years) vs. 0.7 years(95% CI: 0.5±0.8 years)] had the lowest average ***: Patients from the most disadvantaged areas had the highest LOLE with SES-based differences greatest for patients diagnosed with cancer at an early stage or cancers with higher survival rates, suggesting the need to prioritise early detection and reduce treatment-related barriers and survivorship challenges to improve life expec

关键词： Cancer diagnosis life expectancy loss of life expectancy area-level socioeconomic status flexible parametric model

Random fractal-based computational design of an ice-ray (IR) lattice shell structure

在线全文

学校读者我要写书评

暂无评论

Frontiers of Architectural Research 2024年第2期13卷 406-424页

作者： Iasef md Rian Department of Architecture Xi'an Jiaotong-Liverpool UniversitySuzhou 215123China

Chinese ice-ray (IR) lattices, known for their intricate and visually fascinating random patterns as decorative elements in traditional 18th-century Chinese window design, exhibit underlying stiffness as latticed window fences. Such unique patterns represent a new morphology within the family of stochastic lattices. However, the latent structural potential within the random patterns of ice-ray lattices remains largely unexplored, particularly in the context of lattice shell design. This study systematically studies the geometric qualities of ice-ray lattice patterns and develops an algorithm to model these patterns for ice-ray lattice shell design. Subsequently, it assesses the structural feasibility and effectiveness of these lattice shells in comparison to conventional gridshells. The practicality of constructing random lattice shells using digital fabrication tools is also explored. Employing fractal geometry as a foundational framework, this research not only offers insights into the potential of ice-ray lattices for innovative lattice shell design but also introduces a new structural morphology to the field, expanding the possibilities of incorporating stochastic patterns in lattice shell design. Ultimately, it opens up new opportunities for innovative lattice shell designs, emphasizing the potential of stochastic patterns in structural applications.

关键词： Ice-ray pattern Fractals Random Lattice shells Computational design Digital fabrication

Does fishing venture matter for reducing post-harvest loss?Empirical evidence from Bangladesh

在线全文

学校读者我要写书评

暂无评论

Aquaculture and Fisheries 2024年第4期9卷 696-705页

作者： md.Rasheduzzaman md.Masudul Haque Prodhan md.Salauddin Palash md.Akhtaruzzaman Khan Department of Agribusiness and Marketing Bangladesh Agricultural UniversityMymensingh2202Bangladesh Department of Agricultural Finance and Banking Bangladesh Agricultural UniversityMymensingh2202Bangladesh

The study was conducted to estimate the post-harvest loss(PHL)of inland capture fisheries in Bangladesh based on the fishing venture i.e.,sole proprietorship,partnership and cooperatives using Questionnaire Loss Assessment Method(QLAM).A total of 1339 fishermen were selected using stratified random sampling where 792,485,and 62 were involved in the sole proprietorship,partnership,and cooperatives types of fishing venture *** data were collected from thirty-nine districts across six divisions through the direct interview method covering 92 fish *** results indicated that Ashar(June-July)to Agrahayon(November-December)was the peak fishing period for every fishing *** study revealed that the high volumes of fishes were caught from haor for partnership and cooperatives while river was for sole *** study accounted lower PHL for cooperatives than that of sole proprietorship and partnership and found significance differences among them from Tukey’s pairwise *** estimated PHL was higher for Puti(Puntius chola)in sole proprietorship and partnership whereas Tengra(Gagata cenia)in cooperatives *** study suggests to expand the cooperatives fishing ventures widely in Bangladesh where the predominant factors(i.e.,longer harvesting duration,delaying in marketing the fishes and temperature,excess supply,and etc.)of causing PHL in this venture should be taken under consideration.

关键词： Post-harvest loss Inland capture fisheries Fishing venture Physical loss Market loss Bangladesh

Dynamic Hand Gesture-Based Person Identification Using Leap Motion and Machine Learning Approaches

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2024年第4期79卷 1205-1222页

作者： Jungpil Shin md.AlMehedi Hasan md.Maniruzzaman Taiki Watanabe Issei Jozume School of Computer Science and Engineering The University of AizuAizuwakamatsuFukushima965-8580Japan Department of Computer Science&Engineering Rajshahi University of Engineering&TechnologyRajshahi6204Bangladesh

Person identification is one of the most vital tasks for network security. People are more concerned about theirsecurity due to traditional passwords becoming weaker or leaking in various attacks. In recent decades, fingerprintsand faces have been widely used for person identification, which has the risk of information leakage as a resultof reproducing fingers or faces by taking a snapshot. Recently, people have focused on creating an identifiablepattern, which will not be reproducible falsely by capturing psychological and behavioral information of a personusing vision and sensor-based techniques. In existing studies, most of the researchers used very complex patternsin this direction, which need special training and attention to remember the patterns and failed to capturethe psychological and behavioral information of a person properly. To overcome these problems, this researchdevised a novel dynamic hand gesture-based person identification system using a Leap Motion sensor. Thisstudy developed two hand gesture-based pattern datasets for performing the experiments, which contained morethan 500 samples, collected from 25 subjects. Various static and dynamic features were extracted from the handgeometry. Randomforest was used to measure feature importance using the Gini Index. Finally, the support vectormachinewas implemented for person identification and evaluate its performance using identification accuracy. Theexperimental results showed that the proposed system produced an identification accuracy of 99.8% for arbitraryhand gesture-based patterns and 99.6% for the same dynamic hand gesture-based patterns. This result indicatedthat the proposed system can be used for person identification in the field of security.

关键词： Person identification leap motion hand gesture random forest support vector machine

Seasonal influence of freshwater discharge on spatio-temporal variations in primary productivity, sea surface temperature, and euphotic zone depth in the northern Bay of Bengal

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Oceanologica Sinica 2024年第6期43卷 1-14页

作者： Hafez Ahmad Felix Jose md.Simul Bhuyan md.Nazrul Islam Padmanava Dash Geosystems Research Institute/Department of Geosciences Mississippi State UniversityStarkville 39759USA Department of Oceanography University of ChittagongChittagong 4331Bangladesh Department of Marine&Earth Sciences Florida Gulf Coast UniversityFort Myers 33965USA Bangladesh Oceanographic Research Institute Cox’s Bazar 4730Bangladesh Faculty of Marine Sciences&Fisheries Institute of Marine SciencesUniversity of ChittagongChittagong 4331Bangladesh Department of Geography and Environment Jahangirnagar UniversityDhaka 1342Bangladesh Department of Geosciences Mississippi State UniversityStarkville 39759USA

Ocean productivity is the foundation of marine food web,which continuously removes atmospheric carbon dioxide and supports life at sea and on ***-temporal variability of net primary productivity(NPP),sea surface temperature(SST),sea surface salinity(SSS),mixed layer depth(MLD),and euphotic zone depth(EZD) in the northern B ay of Bengal(BoB) during three monsoon seasons were examined in this study based on remote sensing data for the period 2005 to *** compare the NPP distribution between the coastal zones and open BoB,the study area was divided into five zones(Z1-Z5).Results suggest that most productive zones Z2 and Zl are located at the head bay area and are directly influenced by freshwater discharge together with riverine sediment and nutrient *** Z1-Z5,the NPP ranges from 5 315.38 mg/(m^(2)·d) to 346.7 mg/(m^(2)·d)(carbon,since then the same).The highest monthly average NPP of 5 315.38 mg/(m^(2)·d) in February and 5 039.36 mg/(m^(2)·d) in June were observed from Z2,while the lowest monthly average of 346.72 mg/(m^(2)·d) was observed in March from Z4,which is an oceanic *** values vary from 6-154 m for the study area,and it has an inverse correlation with NPP *** is deeper during the summer season and shallower during the wintertime,with a corresponding increase in *** the year,monthly SST shows slight fluctuation for the entire study area,and statistical analysis shows a significant correlation among NPP,and EZD,overall positive between NPP and MLD,whereas no significant correlation among SSS,and SST for the northern ***-term trends in SST and productivity were significantly po sitive in head bay zones but negatively productive in the open *** findings in this study on the distribution of NPP,SST,SSS,MLD,and EZD and their seasonal variability in five different zones of BoB can be used to further improve the management of marine resources and overall environmental condition in response to clim

关键词： chlorophyll a sea surface temperature euphotic zone depth primary productivity Ganges-Brahmaputra ocean color Bay of Bengal monsoon