All Articles

Benzoate Concentration and Cooperativity by a Substrate for Benzoate 1,2-dioxygenase from Benzoate-Degrading Rhodococcus Opacus 1CP

Abstract:

We explored the effect of a change in substrate-benzoate (as sole carbon and energy source) concentration in growth medium on the activity of benzoate 1,2-dioxygenase (BDO) of R.opacus 1CP cells, where BDO is the enzyme mediated the initial attack of benzoate. The activity of the enzyme was estimated by a change of respiration of whole freshly harvested bacterial cells (growth of the cells on benzoate) in response to injection of benzoate. It was shown that when concentration of growth substrate-benzoate decreased from 6 g/L to 250 mg/L, the curves of the dependency of the response rate to benzoate on the initial concentration of benzoate demonstrated that kinetics of the process changes from hyperbolic saturation kinetics, or typical Michaelis-Menten kinetics, to sigmoidal dependency of V on S. The semisaturation constant as a characteristic of the strength of substrate binding with BDO changed simultaneously. These changes were accompanied by th...

Association of Non Epileptic Seizures and Epilepsy:2 Cases Reports of Masturbation Seizures

Abstract:

Non epileptic seizures (NES) are little reported in our country.

Glass Chromatography Application: TLC Separation of Benzoic Esters in Pharmaceutical Products

Abstract:

p-hydroxybenzoic acid esters are used as food and drug preservatives. These compounds were quantised by a reversed-phase thin-layer chromatography method based on the use of silanized silica gel as stationary phase. Thin layers chromatography of silanized silica gel (HF₂₅₄) is implemented to separate p-hydroxybenzoic acid and its methyl, ethyl, propyl, butyl and benzyl esters. Borate buffer (pH 2) was used as a mobile phase with the addition of organic solvent as required. For the quantitative determination, the solutions to be analysed were applied in bands on 5 x 20 cm plates. The plates are developed in glass chromatography chambers lined with filter paper. After the plates have been developed they are dried at room temperature. The spots or bands of the various compounds are visualised under a 250-mµ UV light source. The extraction of the silica gel with methanol was effective. Six preservatives were separated with...

Prenatal Prognostication of Congenital Diaphragmatic Hernia: What are we Looking at?

Abstract:

Data support the use of both ultrasound (US) and magnetic resonance imaging (MRI) in the prenatal prognostication of congenital diaphragmatic hernia (CDH). The aim of this study was to examine our experience and learning curve with both of these diagnostic tools in the setting of a new fetal program.

Sero-Prevalence of HBs Ag, HCV and HIV among Blood Donors in Three Blood Bank Centers in Sana'a city: Yemen

Abstract:

To determine the current prevalence of HBs Ag, Anti-HCV Ab and anti-HIV Abamong blood donors.

How Harm Reduction Programs Work in The Context of Village and Commune Safety Policy: Lessons Learned from A National Non-Governmental Organization in Cambodia

Abstract:

This paper aims to examine the challenges and implications of the Village and Commune Safety Policy (VCSP) on harm-reduction programs and describe lessons learned from a harm-reduction program within the context of the VCSP in Cambodia. Data were collected from a monitoring and evaluation database and reports of a drop-in center that provides a wide range of harm-reduction services. In addition, qualitative data were collected through key informant interviews and focus group discussions with 38 participants including people who use drugs (PWUD) and people who inject drugs (PWID). Desk reviews and consultative meetings with key stakeholders were also conducted. In total, 496 PWUD were registered into the program between 2010 and 2012, of which 22.4% were PWID, and 15.0% were women. The mean age of participants was 26 years old. HIV prevalence among PWUD was 1.0% compared to 16.2% among PWID. Remarkable achievements were observed such as high uptake of services by P...

Blockade of Programmed Cell Death Protein-1 Pathway for the Treatment of Melanoma

Abstract:

Metastatic melanoma is a very deadly type of skin cancer with poor prognosis and low 5-year survival rates. Until recently, patients with metastatic melanoma had very few treatment options, which only included dacarbazine and aldesleukin. In 2011, the first checkpoint blocker, ipilimumab was approved for the treatment of unresectable metastatic melanoma but its success was eclipsed by low response rates and high incidence of adverse events. Later in 2014, anti-PD-1 antibodies, nivolumab and pembrolizumab were approved for the treatment of metastatic melanoma. With comparatively high response rates and manageable safety profile, PD-1 blockers were remarkably successful in the treatment of melanoma and also other cancer subtypes such as non-small cell lung cancer and metastatic urothelial carcinoma. This article highlights the success of anti-PD-1 antibodies, discusses the mechanism of PD-1:PD-L1/2 pathway, responses of melanoma patients to PD-1 blockers and the ...

Identification and Expression Analysis of Fragaria Vesca MLO Genes Involved in Interaction with Powdery Mildew (Podosphaera Aphanis)

Abstract:

Strawberry powdery mildew, caused by Podosphaeraaphanis is a major fungal disease that affects strawberry yield and quality. In the model plant species Arabidopsis and the crop plants barley, tomato and pea, the Mildew resistance locus O (MLO) proteins have been found to be required for powdery mildew susceptibility. The present study, based on the sequence of a wild plum (Prunus americana) MLO protein, identified 16 MLO genes within the genome of woodland strawberry, Fragaria vesca and examined their expression pattern in response to powdery mildew infection in three diploid strawberry cultivars. Phylogenetic analysis showed that the FvMLO genes can be classified into six clades. Four FvMLO genes were grouped into clade III, which comprises MLO genes from Arabidopsis Read Article

Evaluation of an External Quality Assessment Program for HIV Testing in Tigray North Ethiopia 2016

Abstract:

Point-of-care diagnostic tests (POCTs) are increasingly used in both developing and developed countries. They allow same day testing and treatment at remote locations where no laboratory support is available. Quality control measures, which are routinely used in laboratories, have not been widely implemented for POCTs. This aimed to assess the integrity of the entire laboratory testing process, and aims to educate and improve performance in quality of HIV rapid testing.

Mild Ovarian Stimulation has Similar Live Birth Rates as Compared with Hyper Stimulation for Treatment of Poor Responding IVF Patients of Advanced Maternal Age

Abstract:

The number of patients with poor ovarian response (POR) for in vitro fertilization (IVF) varies from 9 to 25%, especially high in patients of advanced maternal age. Although various stimulation protocols have been developed to improve clinical outcomes in patients with POR, a typical and effective protocol remains improvement. Some physicians prefer a mild stimulation protocol, while others like hyper stimulation protocol to obtain more eggs. This study was designed to compare the efficiency of a mild stimulation protocol with hyper stimulation protocol in patients with POR, particularly focused on live birth rate after IVF. Data were collected from 30 poor responders (over 39 years old). Patients were assigned to 2 protocols at the start of ovarian stimulation: Patients in group A were treated with a hyper stimulation (GnRH-antagonist) protocol and patients in group B were treated with a mild stimulation protocol. The ovarian stimulation characteristics, gonado...