Microfluidic Chip-capillary Electrophoresis with Ad- Justable On-chip Sample Dilution for Profiling of Urinary Markers

نویسندگان

  • W. P. Guo
  • Y. S. Fung
چکیده

The paper reports the development of a microfluidic chip-capillary electrophoresis device using UV/Vis detection for profiling of urinary markers with adjustable on-chip sample dilution. A PMMA polymer microfluidic chip-CE device with on-chip ferrofluid valve control for adjustable sample dilution is developed for profiling of urinary markers related to metabolism disorders for clinical diagnosis. On-chip sample dilution up to a 100 folds can be achieved prior to separation in a running buffer containing 3mM 1,3,5-benzenetricarboxylic acid (BTA), 1.5 mM tetraethylenepentamine (TEPA) and 15mM tris(hydroxyl) aminomethane (Tris buffer) solution with pH adjusted to 8.4 by lithium hydroxide.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Droplet-based in situ compartmentalization of chemically separated components after isoelectric focusing in a Slipchip.

Isoelectric focusing (IEF) is a powerful and widely used technique for protein separation and purification. There are many embodiments of microscale IEF that use capillary or microfluidic chips for the analysis of small sample volumes. Nevertheless, collecting the separated sample volumes without causing remixing remains a challenge. Herein, we describe a microfluidic Slipchip device that is ab...

متن کامل

Integrated microfluidic electrophoresis system for analysis of genetic materials using signal amplification methods.

An isothermal signal amplification technique for specific DNA sequences, known as cycling probe technology (CPT), was performed within a microfluidic chip. The presence of DNA from methicillin-resistant Staphylococcus aureus was determined by signal amplification of a specific DNA sequence. The microfluidic device consisted of four channels intersecting to mix the sample and reagents within 55 ...

متن کامل

Antibiograms in five pipetting steps: precise dilution assays in sub-microliter volumes with a conventional pipette.

We demonstrate a standalone microfluidic chip that allows us to carry out commonly executed antibiotic susceptibility assays in an array of nanoliter droplets. We eliminated the need for automation in performing an exemplary complicated liquid handling assay on a chip. Operations on droplets are hard-wired into the microfluidic chip. The liquid handling protocol can be executed with a simple an...

متن کامل

Macro-to-micro interfaces for microfluidic devices.

Since the concept of miniaturized total analysis systems (microTAS) was invented, a great number of microfluidic devices have been demonstrated for a variety of applications. However, an important hurdle that still needs to be cleared is the connection of a microfluidic device with the rest of the world, which is often referred to as the macro-to-micro interface, interconnect, or world-to-chip ...

متن کامل

Patients with infectious diseases, overcrowding, and health in hospital staff.

rials (Figure and eFigure 2). Smartphone-attached “laboratory on chip” (LOC) devices with modular microfluidic chips based on optoelectrowetting technology can perform sample preparation and detection steps in a simple and automated manner; LOC devices to run capillary electrophoresis, real-time polymerase chain reaction, flow cytometry, enzymatic assays, biomarker screening, and immunoassays h...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2010