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Analysis of 10 systemic pesticide residues in various baby foods using liquid chromatography-tandem mass spectrometry
Jae-Han Shim, Angel Yang, A. M. Abd El-Aty, Jong-Hyouk Park, Ayman Goudah, Md. Musfiqur Rahman, Jung-Ah Do

The method developed was sensitive and selective, and detected the analytes below the MRL established by the European Commission and the Korea Food and Drug Administration. The combination of QuEChERS sample preparation and LC-MS/MS analysis provided acceptable quantitative and qualitative results in baby food.

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Residue Analysis of Etoxazole in Red Pepper using Gas Chromatography: Application to Dissipation Pattern
Sung-Woo Kim, Jin Jang, Md. Musfiqur Rahman, A. M. Abd El-Aty, Ah-Young Ko, Jong-Heui Choi, Jae-Han Shim

The dSPE of QuEChERS was replaced with an SPE cartridge, which provided a very clean chromatogram, although a small recovery percentage was obtained. The method fulfilled all validation criteria and was useful for monitoring etoxazole residues in red pepper. It can also be used and optimized for other fruit and vegetable matrices.

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Simultaneous multi-determination and transfer of eight pesticide residues from green tea leaves to infusion using gas chromatography
Sung-Woo Kim, Soon-Kil Cho, A. M. Abd El-Aty, Md. Musfiqur Rahman, Jeong-Heui Choi, Jae-Han Shim

Acetonitrile was used as the extraction solvent with sodium chloride to enhance the partitioning of analytes into the organic phase. Recovery indicated good method accuracy and repeatability, and was within the acceptable range for residue determinations. The mere presence of pesticide residues in tea does not necessarily mean that the tea has become toxic and would pose a health hazard. We revealed that only a negligible or small percentage of pesticides in tea is transferred to the infusion.

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Matrix enhancement effect: A blessing or curse for gas chromatography?
Jae-Han Shim, Md. Musfiqur Rahman, A. M. Abd El-Aty

A sharp, narrow, and sensitive peak is a pre-condition for a sensitive GC analysis. Therefore, a protectant is needed to protect the analyte from any type of distortion for integration and to prevent overestimation. Existing solutions do not overcome these problems completely due to limitations. As the matrix enhancement problem originated from matrix components, its solution should come from similar components.

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Novel Gpr39 Agonists: Correlation Of Binding Affinity Using Label-Free Back-Scattering Interferometry With Potency In Functional Assays
Daniel Brown (1), Niklas Larsson (2), Ola Fjellström (3), Anders Johansson (3), Sara Lundqvist (2), Johan Brengdahl (2), and Richard J. Isaacs (1)

We describe the application of back-scattering interferometry (BSI) to the characterization of small molecule ligand binding to human GPR39 (a GPCR targeted for type-2 diabetes therapy) overexpressed in crude membrane fractions in free solution, including how BSI-derived affinity and functional assay-derived potency correlate for compounds of varying scaffolds

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Characterisation & Potential Applications of Human iPS Cell Derived Neural Progenitor Cells
Wei J1., Gibbons G1., Lopez Alcantara S2., Dale T2., González Rueda A3., Paulsen O3. & Cox C1.

We characterised iPS cell-derived human neural progenitor cells (hNPCs) and their progeny produced using optimised methods to examine their suitability for neurobiology research.

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MAB Discovery Technology: A Smart Way to Highly Diverse and Functional Therapeutic Antibodies
Hans-Willi Krell

MAB Discovery GmbH developped a highly integrated process which provides diverse antibodies by starting with a high number of B cells and filtering the relevant antibodies by an early-on functional screening.

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PRESEPSIN, A SOLUBLE CD14-SUBTYPE, A POSSIBLE NEW BIOMARKER INCREASES IN SEPTIC PATIENTS’ PLASMA FROM PEDIATRIC DEPARTMENT.
Hayato YAMAGUCHI1), Satoshi KIMURA1), Seiji FUKUOKA1), Emiko NAKAMA1), Hideyasu OTO2), Makoto INOUE2), Takashi SOGA2), Shigetaka KITAZAWA2), Yoh UMEDA2)

Increased plasma concentration of soluble CD14-subtype (presepsin) was observed in pediatric patients with bacteremia. Presepsin could be a possible biomarker of sepsis in pediatric patients, however, their reference interval in children could be lower than that of adults. More studies with larger number of samples are required to confirm the result.

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DETERMINATION OF HOMOCYSTEINE THIOLACTONE IN URINE BY FIELD AMPLIFIED SAMPLE INJECTION AND SWEEPING MEKC METHOD WITH UV DETECTION
Paulina Furmaniak, Pawel Kubalczyk, Kamila Borowczyk, Rafal Glowacki

* The procedure does not overload the capillary and has positive effect on the increase in peak hight,
* The method allows about 70-fold increase in method sensitivity,
* The limits of detection and quantification are 0.1 nmol and 0.09 nmol of Hcy-thiolactone in 1 mL of urine, respectively,
* Presented assay can be used for the determination of Hcy-thiolactone in biological samples.

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Scientific News
Novel Organoid Matrix Enables Long-Term Culture of Human Hepatocytes
Organoid growth matrix to enable long-term culture of genome-stable bipotent stem cells from adult human liver.
New Metabolic Biomarkers Predict Future Cardiovascular Diseases
Scientists of the Helmholtz Zentrum München contributed to the analysis of the biomarkers.
Study Links Deficiency of Cellular Housekeeping Gene with Aggressive Forms of Breast Cancer
Research team studies genes involved in the autophagy process and their roles in cancer, aging, infections, and neurodegenerative diseases.
New Method For Identifying Most Aggressive Childhood Cancers
A research group at Lund University in Sweden has found a new way to identify the most malignant tumours in children. The method involves studying genetic ‘micro-variation’, rather than the presence of individual mutations.
Powerful Tool Promises To Change The Way Scientists View Proteins
Aquaria, a publicly available web resource that streamlines and simplifies the process of gleaning insight from 3D protein structures, is fast, easy-to-use and contains twice as many models as all other similar resources combined.
Rapid Test Kit Detects Dengue Antibodies from Saliva
IBN’s MedTech innovation simplifies diagnosis of infectious diseases.
“Unprecedented Sensitivity and Specificity” in Ovarian Cancer
Study of the use of the Parsortix system as a clinical application in the detection and treatment of ovarian cancer patients.
Nanoparticle Lights Up Artery-Clogging Plaque
A new imaging agent that may light up dangerous plaque in arteries is to be evaluated in a clinical trial.
Study Uncovers Range of Molecular Alterations in Head and Neck Cancers
TCGA tumor genome sequencing analyses offer new insights into the effects of HPV and smoking, and find genomic similarities with other cancers.
Beating The Clock: New Treatment For Rabies Developed
University of Georgia researchers have developed a new treatment for rabies.
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