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SPEC 2014

The International conference, SPEC 2014: Shedding New Light on Disease, was held on the 17th – 22nd August in Krakow, Poland. The conference was Co-chaired by Prof. Malgorzata Baranska, Jagellonian University, Krakow, Poland, Prof. Hugh J. Byrne, Dublin Institute of Technology, Ireland, and Prof. Anna Sulkowska, Medical University of Silesia, Katowice, Poland.

The event was the 8th in the series of biennial conferences, the aim of which is to bring together clinicians and scientists who have joined forces in the quest for novel biomedical applications of Infrared and Raman spectroscopy to improve patient care. Recent advances in the biological sciences and medicine have led to an increasing demand for real time and minimally invasive chemical and structural informa¬tion on biological materials. Due to its unique fingerprinting capability, vibrational spectroscopy plays a significant role in histopathology, cytology, biopsy targeting, surgical targets, treatment monitoring and drug studies.

The conference aimed to highlight further advances in state of the art and emerging biomedical applications of Vibrational Spectroscopy framed under the themes of:

Translational research into in vivo clinical applications

Ex vivo tissue biopsies, body fluids and cytological samples for diagnostics and disease studies

In vitro cell culture and 3D models for Research and Medical applications

while reviewing the challenges in the context of other emerging technologies. The programme was constructed in an attempt to prioritise real world applications from the outset, systematically progressing from research towards in vivo, ex vivo and in vitro applications, as well as emerging technologies and data processing, and featured Plenary, Invited and Contributed presentations in each session. The Flash Presentation session provided an opportunity for Early Stage Researchers to orally summarise their poster presentations to the audience in a one minute pitch on the Monday evening (18th), in advance of the formal poster session, on the Tuesday (19th). The Renishaw prize for Best Flash presentation was awarded to Helena Ukkonen, for her presentation entitled “FTIR Imaging Identifies the Changes in the Tumor Microenvironment Caused by Different Cancer Cells”.

Prof. Hugh J. Byrne presents the Analyst prize for best poster presentation to Niels Kröger, Heidelberg University, Germany

Niels Kröger, Heidelberg University, Germany, was awarded the Analyst Poster Prize for his presentation on “Rapid Hyperspectral Imaging of Biological Tissue Using Quantum Cascade Lasers”, while best poster prizes were also awarded to Elisa Barroso and Roeland Smits, Erasmus University Medical Center Rotterdam, for the presentation “High-Wavenumber Raman Spectroscopy to Discriminate Squamous Cell Carcinoma From Healthy Tissue Based on Water Content” sponsored by WITec, and Mohamed Abu Ayoobul Ansary, Jagiellonian University, Poland, for the presentation “Optimization of conjugation of Au/Ag-core/shell nanoparticles with antibodies for SERS studies on endothelial cells” sponsored by Bruker.

A feature of the conference was the daily discussion sessions which were aimed at a critical assessment of the routes towards the further development of clinical applications, under the heading “Quo Vadis? Spectropathology for the next generation” and were moderated by members of the SPEC International Advisory Board. The discussions, based around the three themes above, were loosely based on the agreed framework of:

(i)       What are the most achievable, strategic target applications
(ii)      What are the technical challenges, and how can they be addressed
(iii)     What are the challenges to implementation (legislative, clinical trials etc.), and how can they be addressed

The deliberations of the discussion groups will contribute to a “Roadmap” paper in the special edition of international peer reviewed journal, Analyst, co-authored by the IAB moderators. The discussion sessions also enabled outline presentations of the UK EPSRC CLIRSPEC (Clinical Infrared and Raman Spectroscopy for Medical Diagnosis) and the EU COST network Raman4clinics (European Network on Raman-based applications for clinical diagnostics) and their respective workprogrammes to promote and progress the translation of vibrational spectroscopic technologies into the clinical environment.

Prof. Peter Gardner (Uni. Of Manchester), addresses the Gala Dinner on behalf of the SPEC International Advisory Board, outlining proposals for the establishment of the International Clinical Spectroscopy Society.

The programme and discussions clearly demonstrated that there has been much progress in the understanding of the complexity of spectroscopic characterisation of biological materials, and data preprocessing and postprocessing methods can be applied with confidence to give true biochemical representations of tissue, cells and bodily fluids. Spectroscopic techniques remain a powerful tool for basic research and may find applications in vitro for toxicology and drug screening. Emerging technologies continue to push the performances in terms of acquisition speed, spatial resolution and multimodality. In terms of translation to a clinical environment, there remains a lack of standardisation of measurement and data analysis protocols ex vivo, while cost implications need also to be considered. The increased development of fibre probes shows great promise for in vivo intra-operative applications. However, the need to engage the medical community remains an imperative.

A significant outcome of the satellite meeting of the SPEC IAB was the agreement in principle to the establishment of an International Clinical Spectroscopy Society, as a not-for profit Private Company Limited by Guarantee with charitable status. The Society will primarily promote the translational of spectroscopy into the clinical environment to improve patient diagnosis and prognosis. The SPEC Conference Series will be the primary vehicle of the Society towards this goal. The IAB also accepted the proposal that the next in the series, SPEC 2016, will be held in Montreal, Canada.

The conference attracted 282 participants from 32 countries around the globe. The programme included 62 oral and 191 poster contributions. It was sponsored by a number of commercial enterprises and other organisations, including: Witec, Renishaw, Agilent Technologies, Bruker, NT-MDT, Art Photonics, Thermo-Scientific, Comef, Horiba Scientific, Bio-Tools, Photon Etc., London Spectroscopy, Analyst, CLIRSPEC, PAN, PAU, ABE, KNOW im. Smoluchowskiego, LOT Quantum Design.

The conference was held against the backdrop of the 650th anniversary celebrations of the Jagiellonian University, and enjoyed honorary patronage of the Jagiellonian University, the Mayor of the City of Krakow, the Malopolska Voivodeship and the Marshal of the Małopolska Voivodeship.

And remember, attendees of the SPEC 2014 conference are all invited to submit to the upcoming themed issue in Analyst: deadline 17th October, 2014
Contact us here for more information

Take a look at our previous SPEC themed issue; Optical Diagnosis

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Urine test could catch lung cancer early

Graphical Abstract

Lung cancer could be identified earlier, thanks to a new test that uses surface enhanced Raman spectroscopy (SERS) to detect a cancer biomarker in urine

Detecting lung cancer is difficult as it is hidden in the body, and current clinical methods are not effective at an early stage; the one-year survival rate after diagnosis in the UK is just 29–33%. Acetyl amantadine (AcAm) is recognised as an exogeneous cancer biomarker because it is the product of a metabolic process known to be significantly up-regulated in cancerous cells. After ingestion, the antiparkinson and antiviral drug amantadine is acetylated in the body by the enzyme spermidine/spermine N1 acetyltransferase to give AcAm, which can be detected in patient urine. However, techniques previously used to quantify AcAm in urine, such as liquid chromatography-mass spectrometry (LC-MS), are undesirable for clinical adoption due to high costs and long run times.

Interested to know more? Read the full article in Chemistry World here…

Quantification of an exogenous cancer biomarker in urinalysis by Raman Spectroscopy
Guangyi Cao, Ghazal Hajisalem, Wei Li, Fraser Hof and Reuven Gordon
Analyst, 2014, Advance Article
DOI: 10.1039/C4AN01309C

Do you fancy submitting an article to Analyst? Why not submit to us here today or alternatively email us with your suggestions!

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Top ten most accessed Analyst articles from April to June 2014

During the months April – June 2014, the most downloaded Analyst articles were:

Single molecule sensing by nanopores and nanopore devices
Li-Qun Gu and Ji Wook Shim  
Analyst, 2010, 135, 441-451
DOI: 10.1039/B907735A

A bioelectronic sensor based on canine olfactory nanovesicle–carbon nanotube hybrid structures for the fast assessment of food quality
Juhun Park, Jong Hyun Lim, Hye Jun Jin, Seon Namgung, Sang Hun Lee, Tai Hyun Park and Seunghun Hong
Analyst, 2012, 137, 3249-3254
DOI: 10.1039/C2AN16274A

Measurement of biomarker proteins for point-of-care early detection and monitoring of cancer
James F. Rusling, Challa V. Kumar, J. Silvio Gutkind and Vyomesh Patel
Analyst, 2010, 135, 2496-2511
DOI: 10.1039/C0AN00204F 

Upconversion nanoparticles in biological labeling, imaging, and therapy 
Feng Wang, Debapriya Banerjee, Yongsheng Liu, Xueyuan Chen and Xiaogang Liu 
Analyst, 2010, 135, 1839-1854 
DOI: 10.1039/C0AN00144A 

Recent advances in sample preparation techniques to overcome difficulties encountered during quantitative analysis of small molecules from biofluids using LC-MS/MS 
Caroline Bylda, Roland Thiele, Uwe Kobold and Dietrich A. Volmer    
Analyst, 2014, 139, 2265-2276 
DOI: 10.1039/C4AN00094C 

Aptamer-based biosensors for biomedical diagnostics
Wenhu Zhou, Po-Jung Jimmy Huang, Jinsong Ding and Juewen Liu    
Analyst, 2014, 139, 2627-2640
DOI: 10.1039/C4AN00132J 

Illuminating disease and enlightening biomedicine: Raman spectroscopy as a diagnostic tool 
David I. Ellis, David P. Cowcher, Lorna Ashton, Steve O’Hagan and Royston Goodacre    
Analyst, 2013, 138, 3871-3884 
DOI: 10.1039/C3AN00698K 

Recent advances in electrochemical sensing for hydrogen peroxide: a review 
Wei Chen, Shu Cai, Qiong-Qiong Ren, Wei Wen and Yuan-Di Zhao    
Analyst, 2012, 137, 49-58 
DOI: 10.1039/C1AN15738H 

Simultaneous targeted analysis of five active compounds in licorice by ultra-fast liquid chromatography coupled to hybrid linear-ion trap tandem mass spectrometry 
Weijun Kong, Jing Wen, Yinhui Yang, Feng Qiu, Ping Sheng and Meihua Yang    
Analyst, 2014, 139, 1883-1894 
DOI: 10.1039/C3AN02209A 

Quantum dots in diagnostics and detection: principles and paradigms
R. Pisanic II, Y. Zhang and T. H. Wang    
Analyst,2014, 139, 2968-2981 
DOI: 10.1039/C4AN00294F 

If you have any comments or thoughts on any of these articles, we welcome you to write these in the comment box below.

Do you fancy submitting an article to Analyst? Why not submit to us here today or alternatively email us with your suggestions!

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Strep throat spotted in seconds

Scientists have developed a non-invasive mass spectrometry-based diagnostic technique that can diagnose strep throat in less than 10 seconds.

Almost all of us will experience a sore throat at some point in our lives, and a number of these sore throats (~30%) will be caused by infections with Streptococci bacteria. Streptococcal pharyngitis, which is usually caused by Streptococcus pyogenes, is commonly known as ‘strep throat’ and can be treated with antibiotics if successfully diagnosed. Although the vast majority of strep throat cases resolve themselves within a few days, Streptococcal infections can lead to serious complications, such an inflammatory disease called rheumatic fever that can result in heart failure and even death. Children and the elderly are particularly susceptible to complications, so for these individuals, the rapid diagnosis and treatment of strep throat can be life-saving.

Touch spray-mass spectrometry can detect strep throat causing bacterium directly from medical swabs


Read the full article in Chemistry World»

Read the original journal article in Analyst – it’s free to access until 12th September:
Detection of strep throat causing bacterium directly from medical swabs by touch spray – mass spectrometry
Alan K Jarmusch, Valentina Pirro, Kevin S Kerian and R. Graham Cooks
Analyst, 2014, Accepted Manuscript, DOI: 10.1039/C4AN00959B

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Saliva information

Scientists in the US have developed a mouthguard sensor that could be used to monitor metabolites in saliva to provide real-time information on the health status of the wearer.

Real-time health monitoring is an attractive goal for biomedical, sport and military fields. A range of sensors have been developed that monitor physical signs such as heart rate, but recently interest has moved to detecting biomarkers non-invasively in body fluids to obtain more detailed information.

Saliva is an easily obtainable body fluid and contains analytes that closely correlate to those of blood, providing a good indication of metabolism and hormone levels. Previous saliva sensors have included dental tattoos and dentures but the new mouthguard sensor from Joseph Wang and colleagues at the University of California, San Diego, is much less invasive.

To read the full article by Harriet Brewerton, please go to Chemistry World.

Non-invasive mouthguard biosensor for continuous salivary monitoring of metabolites
Jayoung Kim, Gabriela Valdés-Ramírez, Amay J. Bandodkar, Wenzhao Jia, Alexandra G. Martinez, Julian Ramírez, Patrick Mercier and Joseph Wang
Analyst, 2014, Advance Article
DOI: 10.1039/C3AN02359A, Paper

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Biomarkers leave gender clues at crime scene

Scientists in the US have unveiled details of a colorimetric assay that could provide an initial indication of a suspect’s gender during the on-scene stages of a forensic investigation.

Narrowing the pool of potential suspects early on in their investigations can give the police the upper hand. However, traditional DNA analysis requires laboratory conditions, sophisticated equipment and time. Rapid, simple, on-site analysis of blood left behind at a crime scene may provide investigators with a head start to quickly identify a group of possible suspects or rule out others.

Complementing their previous work, which used the enzyme biomarkers of creatine kinase (CK) and lactate dehydrogenase (LDH) to differentiate between blood samples from different ethnicities, Evgeny Katz at Clarkson University, Potsdam, and Jan Halámek at the University at Albany, State University of New York, have combined analysis of CK with another biomarker, alanine transaminase (ALT), to distinguish between male and female human serum samples. The levels of CK and ALT in the blood of males and females are known to show a small but significant difference. Using a multi-enzyme/multistep biocatalytic cascade, this small difference can be amplified and with the final step involving a coloured compound, a visual identification of gender can be made.

To read the full article, please go to Chemistry World.

Biocatalytic analysis of biomarkers for forensic identification of gender
Saira Bakshi, Lenka Halámková, Jan Halámek and Evgeny Katz
Analyst, 2014,139, 559-563
DOI: 10.1039/C3AN02055J, Communication

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Stress-free sperm sexing

Mass differences between bovine sperm bearing X or Y chromosomes have been measured by researchers in Italy. The findings could be used to develop a gentle sperm sexing technique.

The livestock industry relies on sperm sorting to select the right candidates for artificial insemination. Flow cytometry, the current technique used to sort sperm, involves labelling sperm with a fluorescent dye and capturing the labelled sperm in single droplets before exciting the dye. The strength of the dye’s fluorescence indicates the presence of X or Y chromosomes. However, in this intrusive process the sperm become stressed – the extent of the damage this causes is still under debate.

A microbridge sensor developed by Marco Mauro and his team at Novaetech, Napoli, in collaboration with the Italian Experimental Institute, Lazarro Spallanzani in Cremona, is a non-invasive alternative for sorting live sperm cells.

To read the full article, please visit Chemistry World.

Experimental evidence of a buoyant mass difference between bovine spermatozoa bearing X- and Y-chromosomes using a micromechanical resonator
Marco Mauro, Raffaele Battaglia, Gianluca Ferrini, Roberto Puglisi, Donatella Balduzzi and Andrea Galli
Analyst, 2014, Advance Article
DOI: 10.1039/C3AN01979A, Paper

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Mid-air monitoring of migrating birds

Scientists in the US have designed a biosensor that could be used to study the metabolism of free-flying birds in real time.

There is still much we could learn about wild bird species to help us understand their behaviour, biology and evolution. The fast metabolism of birds makes them very responsive to environmental changes so bird studies are also very useful in ecology research.

Researchers have tracked migration patterns using radio tags and data loggers, but physiological states are mainly assessed by capturing the birds and taking blood samples. Such samples will only provide information of a bird’s current state, which will vary widely depending on the time of year, breeding, migration and so on. A device that tracks a bird whilst monitoring its physiological state would provide in depth information, particularly on migrating birds that travel thousands of kilometres.

Abdurrahman Gumus and colleagues at Cornell University have designed a sensor that could be used to track a bird whilst monitoring its physiology. Gumus says ‘although we have the ability to track the position of birds and, to some degree, correlate their behaviour with environmental conditions, the ability to actually directly link this with the physiological state opens up an entirely new way of conducting ornithological research’.

To read the full article, please visit Chemistry World.

Real-time in vivo uric acid biosensor system for biophysical monitoring of birds
A. Gumus, S. Lee, K. Karlsson, R. Gabrielson, D. W. Winkler and D. Erickson
Analyst, 2014,139, 742-748
DOI: 10.1039/C3AN01787G, Paper

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Biocomputer decides when to administer drugs

Scientists in the US have devised an enzymatic logic system that could be used for releasing drugs. This is the first report of a man-made biomolecular system that can process a series of physiological signals, without the use of electronics.

Biocomputer-based logic systems that process biomolecular signals could revolutionise drug administration. By harnessing signal-responsive electrode surfaces that respond to biochemical signals, widespread personalised medicine takes a step closer to reality.

Historically, drug-release systems have been plagued by slow and uncontrolled release. Various external triggers, including temperature, pH and biochemical species, have been used to stimulate drug release. Systems activated by biochemical signals are often complicated and limited, combining both the receptor and the release system. Physical separation of these two components on individual electrodes would simplify the process.

Expanding on their recent work with glucose sensing electrodes, Evgeny Katz and Shay Mailloux at Clarkson University, in collaboration with Jan Halámek from the State University of New York at Albany, have developed a logical biomolecule release system. An electrode covered by a redox-active, iron(III)-cross-linked alginate polymer film with physically entrapped biomolecules serves as the substance-releasing component and a pyrroloquinoline quinone (PQQ)-modified electrode serves as the biocatalytic electrode.

To read the full article, please visit Chemistry World

A model system for targeted drug release triggered by biomolecular signals logically processed through enzyme logic networks
Shay Mailloux, Jan Halámek and Evgeny Katz
Analyst, 2014, Advance Article
DOI: 10.1039/C3AN02162A, Communication

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Crime scene chemistry – Analyst articles on Chemistry World 2013

What discoveries caused the biggest buzz in chemistry labs in 2013? With the help of an expert panel of journal editors Chemistry World reviews the ground breaking research and important trends in this year’s crop of chemical science papers.

Find out which Analyst articles have been featured in Chemistry World this year:

Crime scene chemistry Graphical abstract: Solid-state Forensic Finger sensor for integrated sampling and detection of gunshot residue and explosives: towards ‘Lab-on-a-finger’

Improvements in forensic techniques have also featured on our pages this year. A team in the US developed a device that investigators can wear on their fingertips to rapidly identify traces of explosives and gunshot residue. The sensor consists of an electrode screen-printed onto a stretchable sheath worn on the index finder, and a sheath for the thumb coated with a solid-state ionogel electrolyte. To analyse a sample the investigator simply squeezes their finger and thumb together after swiping a surface, completing the electrochemical cell. A portable analyser then reads the voltammetric signal, identifying distinct peaks for explosives or gunshot residue. The process takes just a few minutes, cutting down the lengthy practice of sample collection and lab analysis.

Another group has developed a bioassay that can be used to analyse blood samples on-site to give investigators an early indication of a suspect’s ethnicity. Evgeny Katz at Clarkson University, US, in collaboration with Jan Halámek, now at the State University of New York at Albany, analysed levels of two biomarkers – creatine kinase and lactate dehydrogenase – in the blood of people of Caucasian and African American ethnicity. They then developed a bioassay to amplify the differences in these levels. The test could successfully distinguish between ethnicities in real human blood samples, as well as samples a day old, as could well be the case at a crime scene.

To find out more, read the full article on Chemistry World.

Solid-state Forensic Finger sensor for integrated sampling and detection of gunshot residue and explosives: towards ‘Lab-on-a-finger’
Amay J. Bandodkar, Aoife M. O’Mahony, Julian Ramírez, Izabela A. Samek, Sean M. Anderson, Joshua R. Windmiller and Joseph Wang
Analyst, 2013,138, 5288-5295
DOI: 10.1039/C3AN01179H, Paper

Biocatalytic analysis of biomarkers for forensic identification of ethnicity between Caucasian and African American groups
Friederike Kramer, Lenka Halámková, Arshak Poghossian, Michael J. Schöning, Evgeny Katz and Jan Halámek
Analyst, 2013,138, 6251-6257
DOI: 10.1039/C3AN01062G, Communication

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