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Sajid Adhi Raja,Vui Heng Chong,Noor A. Rahman,Lilabi M P Shakir,Joe Knights 대한안과학회 2022 Korean Journal of Ophthalmology Vol.36 No.1
Purpose: To determine the prevalence of diabetic retinopathy (DR) and the factors associated with retinopathy among type2 diabetes mellitus (DM) patients in Brunei Darussalam. Methods: Cross-sectional study of all type 2 DM patients who attended diabetic eye screening over a 3-month period at oneof four government hospitals. We assessed association between DR with the following variables: age, sex, glycated hemoglobin(HbA1c), duration of DM, hypertension, hyperlipidemia, and microalbuminuria. Results: There were 341 patients (female, 58.9%; mean age, 55.3 ± 11.9 years) with a mean duration of DM of 9.4 ± 7.4 yearsand mean serum HbA1c of 8.4% ± 1.9%. The overall prevalence of any DR was 22.6% (95% confidence interval, 18.8–27.1)with prevalence rates of 4.1% (95% confidence interval, 2.1–6.4) for proliferative DR and 9.7% (95% confidence interval,6.8–13.2) for vision-threatening DR. Multivariate analysis showed that DR was significantly associated with certain age groups(reduced in older age groups), longer duration of DM (11 years or more), poor control (HbA1c >9.0%) and presence of any microalbuminuria. Conclusions: DR affects one in five patients with DM in Brunei Darussalam, comparable to rates reported for other Asianpopulations. It is especially worrying that one in ten patients with DM had vision-threatening DR. DR was significantly associatedwith longer duration of DM, poor control and presence of microalbuminuria but reduced in older age groups. It isimportant to advocate good control right from the time of diagnosis of DM and institute timely and effective management ofretinopathy. DR was significantly associated with longer duration of DM, poor control of diabetes, and presence of microalbuminuriabut reduced in older age groups.
Sajid Ali,Sang-Moon Lee,Choon-Man Jang 대한설비공학회 2022 대한설비공학회 학술발표대회논문집 Vol.2022 No.6
The school building sector has a pivotal role to play in the transition to a low carbon economy. Due to COVID-19 pandemic, more efforts have been made to purify the air supplied indoors of school buildings which has raised the energy consumption of buildings and ventilation systems. Present work analyzes the energy performance of a school building with two classrooms. This building is under consideration for development of an energy-efficient heating, ventilation and air-conditioning (HVAC) system powered partially by renewable energy in the form of solar and geothermal energy. ‘Energy-balance method’ approach is used in present study to analyze building energy performance. The analyses showed that return air duct position has a significant impact on the energy efficiency of building and up to eight percent energy can be saved by choosing ceiling return rather than floor or wall return (for return air).
Sajid Qayyum,Tasawar Hayat,Sabir A. Shehzad,Ahmed Alsaedi 한국원자력학회 2017 Nuclear Engineering and Technology Vol.49 No.8
The main purpose of this article is to describe the magnetohydrodynamic stagnation point flow ofWalter-B nanofluid over a stretching sheet. The phenomena of heat and mass transfer are based on theinvolvement of thermal radiation and chemical reaction. Characteristics of Newtonian heating are givenspecial attention. The Brownian motion and thermophoresis models are introduced in the temperatureand concentration expressions. Appropriate variables are implemented for the transformation of partialdifferential frameworks into sets of ordinary differential equations. Plots for velocity, temperature, andnanoparticle concentration are displayed and analyzed for governing parameters. The skin friction coefficientand local Nusselt and Sherwood numbers are studied using numerical values. The temperatureand heat transfer rate are enhanced within the frame of the thermal conjugate parameter.
Sajid Sanaullah,Rahman Sajjad ur,Mohsin Mashkoor,Sindhu Zia ud Din 한국미생물·생명공학회 2022 한국미생물·생명공학회지 Vol.50 No.3
The infectious bursal disease (IBD) is a highly contagious and acute poultry disease caused by Birnavirus. However, the vaccination is the only disease prevention, but several factors impeded vaccine development. Thus, a need for time to develop a novel technique for managing and treating respiratory diseases in poultry birds. Passive immunization is a hope and a possible alternative used in birds to meet this need. The current research attempted to produce egg yolk-based polyclonal antibodies against the IBD virus. The benefits of IgY include ease of extraction, lack of reaction with mammalian Fc receptors, and low production cost. Commercial layers were immunized with inactivated IBD virus subcutaneously according to the treatment regimen. The eggs were gathered daily, and yolk antibodies were extracted with the ammonium sulfate precipitation technique. The use of an indirect hemagglutination test demonstrated that IgY was IBD-specific. Until the end of the experiment, the specific IgY immunoglobulins did not lose activity when stored at 4℃. The specific immunoglobulin (IgY) treated challenged birds were demonstrated 92% recovery in comparison to the control group. The study implies that the IBDV specific IgY is an easily prepared and rich source of antibodies and offers an alternative therapeutic agent to cure IBD-infected birds.
Sajid-ur-Rehman,Saeed, Aamer,Saddique, Gufran,Ali Channar, Pervaiz,Ali Larik, Fayaz,Abbas, Qamar,Hassan, Mubashir,Raza, Hussain,Fattah, Tanzeela Abdul,Seo, Sung-Yum Elsevier 2018 Bioorganic & medicinal chemistry Vol.26 No.12
<P><B>Abstract</B></P> <P>To seek the new medicinal potential of sulfadiazine drug, the free amino group of sulfadiazine was exploited to obtain acyl/aryl thioureas using simple and straightforward protocol. Acyl/aryl thioureas are well recognized bioactive pharmacophore containing moieties. A new series (<B>4a</B>–<B>4j</B>) of sulfadiazine derived acyl/aryl thioureas was synthesized and characterized through spectroscopic and elemental analysis. The synthesized derivatives <B>4a</B>–<B>4j</B> were subjected to calf intestinal alkaline phosphatase (CIAP) activity. The derivative <B>4a</B>–<B>4j</B> showed better inhibition potential compared to standard monopotassium phosphate (MKP). The compound <B>4c</B> exhibited higher potential in the series with IC<SUB>50</SUB> 0.251 ± 0.012 µM (standard KH<SUB>2</SUB>PO<SUB>4</SUB> 4.317 ± 0.201 µM). Lineweaver-Burk plots revealed that most potent derivative <B>4c</B> inhibition CIAP via mixed type pathway. Pharmacological investigations showed that synthesized compounds <B>4a</B>–<B>4j</B> obey Lipinsk’s rule. ADMET parameters evaluation predicted that these molecule show significant lead like properties with minimum possible toxicity and can serve as templates in drug designing. The synthetic compounds show none mutagenic and irritant behavior. Molecular docking analysis showed that compound <B>4c</B> interacts with Asp273, His317 and Arg166 amino acid residues.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Sulfadiazine based acyl/aryl thioureas has been synthesized and were screen against calf intestinal alkaline phosphatase (CIAP). </LI> <LI> Compound <B>4c</B> was found to be potent derivative in the series. </LI> <LI> Lineweaver-Burk plots revealed mixed type of enzyme inhibition mechanism. </LI> <LI> All the derivatives <B>4a</B>–<B>4j</B> obey Lipinski’s Rule. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>