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Al-Reza, Sharif M.,Rahman, Atiqur,Kang, Sun Chul Blackwell Publishing Ltd 2009 International journal of food science & technology Vol.44 No.6
<P>Summary</P><P>In this study, we examined the chemical compositions of essential oil and tested the efficacy of oil and organic extracts of <I>Cestrum nocturnum</I> L. against food-borne pathogens. The chemical compositions of the oil was analysed by gas chromatography-mass spectrometry (GC-MS). Forty-seven compounds representing 93.28% of the total oil were identified. The oil [5 &mgr;L of 1:5 (v/v) dilution of oil with methanol] and organic extracts of hexane, chloroform, ethyl acetate and methanol (300 &mgr;g per disc) of <I>C. nocturnum</I> displayed a great potential of antibacterial activity against <I>Staphylococcus aureus</I> (ATCC 6538 and KCTC 1916), <I>Listeria monocytogenes</I> (ATCC 19166 and ATCC 15313), <I>Bacillus subtilis</I> ATCC 6633, <I>Pseudomonas aeruginosa</I> KCTC 2004, <I>Salmonella typhimurium</I> KCTC 2515 and <I>Escherichia coli</I> ATCC 8739. Also the oil had strong detrimental effect on the viable count of the tested bacteria. The results obtained from this study may contribute to the development of new antimicrobial agents with potential applications in food industries as natural preservatives to control food-borne pathogens.</P>
Efficacy of Chemical Preservatives to Control Perilla Rust
Al-Reza, Sharif M.,Hwang, Cher-Won,Kang, Sun-Chul The Korean Society of Environmental Agriculture 2010 한국환경농학회지 Vol.29 No.4
The rust fungi are biotrophic fungal pathogens that cause serious disease on Perilla leaves in Korea. The effect of some commonly used chemical preservatives (sorbic acid, D-sorbitol, propionic acid and benzoic acid) against Perilla rust was investigated in this study. Results of this investigation showed that all the preservatives were effective against Perilla rust except benzoic acid. There was no growth of rust spores on the Perilla leaves treated with 0.1% of preservative even after 21 days of preservation. However, 0.01% of preservative also showed remarkable reduction of rust spores on the Perilla leaves as compared to the control groups. Thus, the results of this study indicated that the chemical preservatives used might be useful to control the growth of rust fungi on Perilla leaves.
Al-Reza, Sharif M.,Rahman, Atiqur,Ahmed, Yunus,Kang, Sun Chul Elsevier 2010 Pesticide biochemistry and physiology Vol.96 No.2
<P><B>Abstract</B></P><P>The efficacy of the essential oil and various organic extracts from flowers of <I>Cestrum nocturnum</I> L. was evaluated for controlling the growth of some important phytopathogenic fungi. The oil (1000ppm) and the organic extracts (1500μg/disc) revealed antifungal effects against <I>Botrytis cinerea</I>, <I>Colletotrichum capsici</I>, <I>Fusarium oxysporum</I>, <I>Fusarium solani</I>, <I>Phytophthora capsici</I>, <I>Rhizoctonia solani</I> and <I>Sclerotinia sclerotiorum</I> in the growth inhibition range of 59.2–80.6% and 46.6–78.9%, respectively, and their MIC values were ranged from 62.5 to 500 and 125 to 1000μg/mL. The essential oil had a remarkable effect on spore germination of all the plant pathogens with concentration and time-dependent kinetic inhibition of <I>P. capsici</I>. Further, the oil displayed remarkable <I>in vivo</I> antifungal effect up to 82.4–100% disease suppression efficacy on greenhouse-grown pepper plants. The results obtained from this study may contribute to the development of new antifungal agents to protect the crops from fungal diseases.</P>
( Hasan Al Reza ),( Wardatul Jannat Anamika ),( Md. Miraj Kobad Chowdhury ),( Mohammad Golam Mostafa ),( M. Aftab Uddin ) 대한내과학회 2020 The Korean Journal of Internal Medicine Vol.35 No.3
Background/Aims: Bangladesh is a densely populated country with an increased incidence of lung cancer, mostly due to smoking. Therefore, elucidating the association of mouse double minute 2 homolog (MDM2) single nucleotide polymorphism (SNP) 309 (rs2279744) with lung cancer risk from smoking in Bangladeshi population has become necessary. Methods: DNA was extracted from blood samples of 126 lung cancer patient and 133 healthy controls. The MDM2 SNP309 was genotyped by polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP), using the restriction enzymes MspA1I. Logistic regression was then carried out to calculate odds ratios (ORs) and 95% confidence intervals (CIs) to estimate the risk of lung cancer. A meta-analysis of SNP309 was also carried out on 12,758 control subjects and 11,638 patient subjects. Results: In multivariate logistic regression, significantly increased risk of lung cancer was observed for MDM2 SNP309 in the dominant model (TG + GG vs. TT: OR, 2.13; 95% CI, 1.29 to 3.53). Stratification analysis revealed that age, sex, obesity, and smoking also increases the risk of lung cancer when carrying the MDM2 SNP309. Our meta-analysis revealed that MDM2 SNP309 was considerably associated with lung cancer in Asian populations (TG + GG vs. TT: OR, 1.32; 95% CI , 1.12 to 1.56; p = 0.019 for heterogeneity). Conclusions: The MDM2 SNP309 was associated with high risk of lung cancer in Bangladeshi and Asian population, particularly with increased age, smoking, and body mass index.
A cohort study on the association of MDM2 SNP309 with lung cancer risk in Bangladeshi population
Hasan Al Reza,Wardatul Jannat Anamika,Md. Miraj Kobad Chowdhury,Mohammad Golam Mostafa,M. Aftab Uddin 대한내과학회 2020 The Korean Journal of Internal Medicine Vol.35 No.3
Background/Aims: Bangladesh is a densely populated country with an increased incidence of lung cancer, mostly due to smoking. Therefore, elucidating the association of mouse double minute 2 homolog (MDM2) single nucleotide polymorphism (SNP) 309 (rs2279744) with lung cancer risk from smoking in Bangladeshi population has become necessary. Methods: DNA was extracted from blood samples of 126 lung cancer patient and 133 healthy controls. The MDM2 SNP309 was genotyped by polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP), using the restriction enzymes MspA1I. Logistic regression was then carried out to calculate odds ratios (ORs) and 95% confidence intervals (CIs) to estimate the risk of lung cancer. A meta-analysis of SNP309 was also carried out on 12,758 control subjects and 11,638 patient subjects. Results: In multivariate logistic regression, significantly increased risk of lung cancer was observed for MDM2 SNP309 in the dominant model (TG + GG vs. TT: OR, 2.13; 95% CI, 1.29 to 3.53). Stratification analysis revealed that age, sex, obesity, and smoking also increases the risk of lung cancer when carrying the MDM2 SNP309. Our meta-analysis revealed that MDM2 SNP309 was considerably associated with lung cancer in Asian populations (TG + GG vs. TT: OR, 1.32; 95% CI , 1.12 to 1.56; p = 0.019 for heterogeneity). Conclusions: The MDM2 SNP309 was associated with high risk of lung cancer in Bangladeshi and Asian population, particularly with increased age, smoking, and body mass index.
Efficacy of Chemical Preservatives to Control Perilla Rust
( Sharif M. Al-Reza ),( Cher Won Hwang ),( Sun Chul Kang ) 한국환경농학회 2010 한국환경농학회지 Vol.29 No.4
The rust fungi are biotrophic fungal pathogens that cause serious disease on Perilla leaves in Korea. The effect of some commonly used chemical preservatives (sorbic acid, D-sorbitol, propionic acid and benzoic acid) against Perilla rust was investigated in this study. Results of this investigation showed that all the preservatives were effective against Perilla rust except benzoic acid. There was no growth of rust spores on the Perilla leaves treated with 0.1% of preservative even after 21 days of preservation. However, 0.01% of preservative also showed remarkable reduction of rust spores on the Perilla leaves as compared to the control groups. Thus, the results of this study indicated that the chemical preservatives used might be useful to control the growth of rust fungi on Perilla leaves.
( Y. A. Al-gumaei ),( K. A. Noordin ),( A. W. Reza ),( K. Dimyati ) 한국인터넷정보학회 2015 KSII Transactions on Internet and Information Syst Vol.9 No.7
In the recent years, femtocell technology has received a considerable attention due to the ability to provide an efficient indoor wireless coverage as well as enhanced capacity. However, under the spectrum sharing between femtocell user equipment (FUEs) and the owner of spectrum macrocell user equipment (MUEs), both may experience higher uplink interference to each other. This paper proposes a novel distributed power control algorithm for the interference management in two-tier femtocell networks. Due to the assignment of licensed radio frequency to the outdoor macrocell users, the access priority of MUEs should be higher than FUEs. In addition, the quality of service (QoS) of MUEs that is expressed in the target signal-to-interference-plus-noise ratio (SINR) must always be achieved. On the other hand, we consider an efficient QoS provisioning cost function for the low-tier FUEs. The proposed algorithm requires only local information and converges even in cases where the frontiers of available power serve the target SINRs impossible. The advantage of the algorithm is the ability to implement in a distributed manner. Simulation results show that the proposed algorithm based on our cost function provides effective resource allocation and substantial power saving as compared to the traditional algorithms.
Md. Mamun Al-Amin,Mir Muhammad Nasir Uddin,Hasan Mahmud Reza 대한정신약물학회 2013 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.11 No.3
Objective: We investigated the effects of antipsychotics on immune-challenged peripheral blood mononuclear cell (PBMC)cultures. Methods: Blood samples were collected from twelve patients with first-episode schizophrenia. The PBMCs were separated and cultures were prepared and stimulated with lipopolysaccharide (LPS) or polyinosinic:polycytidylic acid (poly[I:C]), and then separately treated with a typical antipsychotic (haloperidol) or atypical antipsychotic (clozapine, quetiapine, or risperidone). Pro-inflammatory (interferon gamma [IFN-γ]) and anti-inflammatory (interleukin [IL]-4 and IL-10) cytokine levels were measured in the LPS- or poly(I:C)-stimulated PBMC cultures treated with antipsychotics. Results: Haloperidol and quetiapine significantly increased the IL-4 levels (p<0.05) in LPS-stimulated PBMC cultures, while clozapine and quetiapine significantly enhanced the IL-4 levels (p<0.05) in poly(I:C)-stimulated PBMC cultures. Only treatment with haloperidol resulted in a significant increase in IL-10 production (p<0.05) in LPS-stimulated PBMC cultures, whereas clozapine,quetiapine, and risperidone treatment significantly increased IL-10 production (p<0.05) in poly(I:C)-stimulated PBMC cultures. All of the antipsychotics reduced the IFN-γ level significantly (p<0.05) in LPS- and poly(I:C)-stimulated PBMC cultures. Conclusion: Antipsychotic treatment altered immune function by raising the levels of anti-inflammatory cytokines (IL-4 and IL-10)and suppressing the levels of pro-inflammatory cytokines (IFN-γ).