Life Sciences Mass Spectrometry eNewsletter
Critical Mass Issue 30
Dec 2006
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 Tip of the Month: Calibration File Backup and Restore  
Calibration file backup and restore allows saving and restoring calibration files. It is useful for different calibration samples, especially for high-mass calibration sample.
See How to Access this Feature 

 Software Update  
Here are the software updates for December. There have been several since the last revision. Please contact your local sales representative regarding questions on how to upgrade your software.
Note: This list is subject to change without notice as our software is continuously being updated and improved.
View the Latest Software Updates 

 Environmental Application: Anti-Infectives in Raw and Treated Sewage  
“Anti-infectives” is a general term that refers to several classes of biologically active compounds used to treat or prevent infections. Therapeutic agents such as antimicrobials (synthetic) and antibiotics (natural or semi-natural) are examples of anti-infectives. The widespread utilization of anti-infectives in urban centers as well as their resistance to biodegradation or elimination in wastewater treatment plants (WWTPs) has led to their appearance in effluents and surface waters. In the last few years there has been a growing concern about the environmental fate and the possible effects of these agents on the aquatic environment.
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 Drug Discovery: CID of Methimazole and Acetylsalicylic Acid  
Acetylsalicylic acid (Aspirin) belongs to a class of medications known as non-steroidal anti-inflammatory drugs (NSAIDs) and has been among the most popular medications for treating mild to moderate pain. It also reduces inflammation, clotting of blood, fever, redness, swelling and discomfort caused by medical disorders such as headaches, infections and arthritis. Methimazole is used to treat hyperthyroidism, a condition that occurs when the thyroid gland produces too much thyroid hormone. Mass spectrometry has played a significant role in the characterization and analysis of small molecules such as Methimazole and Aspirin.
Download Full Article [PDF 268 kB] 

 Thermo Fisher Scientific Acquires Cohesive Technologies  
Thermo Fisher Scientific recently acquired Massachusetts-based Cohesive Technologies Inc., a manufacturer of advanced sample extraction and liquid chromatography products. The Cohesive product line enhances the company's Thermo Scientific-branded portfolio by adding in-line sample preparation capabilities that couple with mass spectrometry technology to create end-to-end workflow solutions for drug and other organic molecule analyses. These new capabilities will significantly improve sample throughput and increase detection limits during LC/MS/MS analysis for customers in the pharmaceutical, clinical, environmental and food science industries.
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 Resource Centre  
Multiple information packed CDs are a mere click away. Make use of this opportunity to order one or more of the following resources:
- Proteomics Resource Library 2.2 CD
- 2006 LC/MS Presentations CD
- LC/MS Abstracts Database Rev 1.3 CD
- Laminated 2007 Wall Calendar
- Columns and Consumables catalog
Place your Order Now 

 Proteomics Application: Relative Quantitation on an LTQ Orbitrap  
Accurate quantitation of differentially expressed proteins is a continuing challenge in proteomics research. Many analytical methods have been developed, including several isotope labeling techniques. LC-MS/MS with linear ion trap technology is a proven method for sensitive and robust protein identification in "bottom-up" experiments. Quantitation of low mass reporter ions created during MS/MS analysis of iTRAQ labeled peptides can be performed...
Download Full Article [PDF 255 kB] 

 Trap Talk: Increased Post-Excitation Ion Cyclotron Radius  
In Fourier transform ion cyclotron resonance (FTICR) mass spectrometry, high post-excitation cyclotron radii are beneficial in terms of both detection sensitivity and mass accuracy. However, in conventional ICR cells, the maximum attainable post-excitation radius usually is limited by axial components of the excitation field causing the loss of ions due to axial ejection. Various ICR cell designs have been introduced over the...
Download Full Article [PDF 1,832 kB] 

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