SPINA / News: Recent posts

Beginning hypothyroidism as a risk factor for malignant arrhythmia

A recent trial published in the journal Therapeutic Advances in Endocrinology and Metabolism demonstrated that patients with ensuing hypothyroidism have increased T-wave dispersion as quantified with Tp-e interval, Tp-e/QT ratio and Tp-e/QTc ratio from resting ECG. SPINA-GT, which was significantly lower in a group with subclinical hypothyroidism compared to normal controls, showed a significant negative correlation to the Tp-e interval (r = −0.54, p < 0.01).... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2017-02-03 Labels: SPINA-GT Hypothyroidism Cardiovascular risk Arrhythmia Tp-e

LOINC 2.58 covers SPINA-GT and SPINA-GD

The newest LOINC version, release 2.58, published on December 12st, 2016, includes thyroid's secretory capacity (SPINA-GT) and sum activity of peripheral deiodinases (SPINA-GD) with the codes 82368-2 and 82367-4, respectively.

LOINC (Logical Observation Identifiers Names and Codes) is a database and standard of universal identifiers for laboratory and other clinical observations. It facilitates exchange and storage of clinical results or vital signs for patient care and clinical research. LOINC is endorsed and/or recommended by the American Clinical Laboratory Association, the College of American Pathologists (CAP), Deutsches Institut für Medizinische Dokumentation und Information (DIMDI), and the organisations for Health Level 7 (HL7) and Digital Imaging and Communications in Medicine (DICOM) as well as by other national and international organisations. Covering SPINA in LOINC will facilitate exchange of calculation results in hospital information systems, electronic health records and other platforms for medical communication.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2017-01-08 Labels: LOINC SPINA-GT SPINA-GD HL7 applications

SPINA Thyr compatible with macOS Sierra

SPINA Thyr 4.0.1 has been tested with macOS 10.12 (Sierra) and found to be compatible and well functional.

Posted by Dr. Johannes W. Dietrich, M.D. 2016-09-23 Labels: macOS Sierra Compatibility

SPINA-derived parameters to be included in LOINC.

On August 23rd, 2016 the Regenstrief Institute, colocated at the Indiana University School of Medicine and creator of the LOINC standard, announced to include SPINA-GT and SPINA-GD in the next version of LOINC. LOINC (Logical Observation Identifiers Names and Codes) is a database and standard of universal identifiers for laboratory and other clinical observations. It facilitates exchange and storage of clinical results or vital signs for patient care and clinical research. LOINC is endorsed and/or recommended by the American Clinical Laboratory Association, the College of American Pathologists (CAP), Deutsches Institut für Medizinische Dokumentation und Information (DIMDI), and the organisations for Health Level 7 (HL7) and Digital Imaging and Communications in Medicine (DICOM) as well as by other national and international organisations.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2016-08-24 Labels: LOINC Regenstrief institute SPINA SPINA-GT SPINA-GD HL7 CAP DIMDI DICOM

Hyperdeiodination compensates for beginning thyroid failure

Recent research based on SPINA and numeric simulations with SimThyr had suggested the existence of a functional TSH-T3 shunt in humans. This hypothesis was now re-evaluated in a study with 271 thyroid-healthy subjects and 86 untreated patients with thyroid autoimmune disease. The study, which has been published in the European Thyroid Journal, found a significant and nonlinear negative association between SPINA-GD and SPINA-GT, even after correction for spurious correlation. The results of this study demonstrate that the euthyroid panel doesn't follow a homogeneous pattern to produce randomly-distributed TSH concentrations and thyroid hormones, but that it forms a heterogeneous group displaying distinctly different levels of homeostatic equilibria across the euthyroid range. It also confirms earlier assumptions that the TSH-T3 shunt mediates a compensatory response, where a sinking thyroid's secretory capacity is partly offset by increasing deiodination, thus maintaining FT3 concentrations in a normal range despite beginning hypothyroidism.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2016-08-24 Labels: SPINA SPINA-GT SPINA-GD TSH-T3 shunt hypothyroidism euthyroidism

Recent review article summarizes the diagnostic utility of SPINA

A recently published perspective article, which was authored by an international team of contributors in the journal Frontiers in Endocrinology, reviews theoretical background and diagnostic utility of SPINA-GT, SPINA-GD and other calculated parameters of thyroid homeostasis. In addition to results of computer simulations with SimThyr, which confirm earlier observations that SPINA has higher reliability than native concentrations of TSH and peripheral thyroid hormones, it summarizes the results of clinical studies covering more than 10,000 subjects. Beyond SPINA it also describes other calculated parameters including a recently published algorithm for reconstructing the set point of thyroid homeostasis, Jostel's TSH index as a measure for pituitary function and a set of integrated models based on the UCLA platform.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2016-08-24 Labels: SPINA science research trials clinical appliations SPINA-GT SPINA-GD publications

SPINA Thyr has been curated by SciCrunch

Recently, SPINA Thyr has been curated by SciCrunch.

SciCrunch, a "researcher content management system designed for dynamic data", is a key tool of the Resource Identification Initiative. From now on, authors can easily cite SPINA Thyr by adding its RRID to their papers.

See http://scicrunch.org/browse/resources/SCR_014352 and https://www.force11.org/group/resource-identification-initiative for more details.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2016-04-11 Labels: SciCrunch Science Citing SPINA

Trial demonstrates SPINA-GD to be an independent predictor of L-T4 dose

Recently, a trial with 353 subjects on steady-state L-T4 replacement dose for autoimmune thyroiditis or after surgery for malignant or benign thyroid disease was published in Endocrine Connections.

It revealed that substitution dose was independently associated with gender, age, aetiology and deiodinase capacity (all p<0.001). Stratifying patients by deiodinase activity (SPINA-GD) categories of <23, 23-29 and >29 nmol/s revealed an increasing FT3-FT4 dissociation; the poorest converters showed the lowest FT3 levels in spite of highest dose and circulating FT4 (p<0.001).... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2015-08-22 Labels: SPINA-GD

SPINA Thyr updated to version 4.0.1

SPiNA Thyr has been released in version 4.0.1. This is a bug fix release, which addresses an issue that was introduced with version 4.0 and that resulted in inability of the program to calculate, if reference values were undefined. Additionally it fixes a crash that occurred, if the file open dialog for HL7 files was cancelled.

Posted by Dr. Johannes W. Dietrich, M.D. 2015-04-09 Labels: release notes version 4.0.1 bugs

Large study unveils existence of a TSH-T3 shunt in vivo.

Results of a large clinical observation study suggest that thyroid homeostasis might be more complex than previously assumed. Combining data of more than 1000 patients with results of computer simulations delivered new hints that in humans TSH might stimulate deiodinase activity in vivo.

For a long time it was known that cAMP up-regulates both type 1 and type 2 deiodinase, and it could also be shown that TSH (which stimulates intracellular cAMP release) is able to increase deiodination on both transcriptional and post-translational levels. However, these observations resulted from animal experiments and cell culture investigations only, and it was unknown if they are of relevance in humans in vivo.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2015-04-02 Labels: Research TSH-T3 shunt

Announcing SPINA Thyr 4.0

With immediate effect SPINA Thyr is available in version 4.0. This is a major upgrade that implements a plethora of new functions.

SPINA Thyr is now able to calculate z-transformed standardised variants of SPINA-GD and Jostel's TSH index, two Gaussian distributed structure parameters for peripheral deiodination and pituitary function. Additionally, the export of findings as HL7 messages, which is now the standard export format, has been improved, and SPINA Thyr is now able to read findings in HL7's ORU^R01 format. Together with the new import and export functions an editor for basic patient data has been introduced.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2015-01-16 Labels: SPINA 4.0 HL7 SPINA-sGD sTSHI printing ORU^R01

New clinical trial investigates interlocking roles of TSH, FT4 and FT3

Results of a new trial making use of SPINA have recently been published in Clinical Endocrinology.
This study investigated patterns of thyroid homeostasis in 1912 subjects with different thyroid conditions. It revealed that correlations between FT3, FT4 and TSH were modulated by multiple factors including age, body mass, thyroid volume, antibody status and L-T4 treatment. FT3 levels and calculated deiodinase activity (SPINA-GD) were significantly lower in subjects treated with levothyroxine.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2014-07-10 Labels: SPINA-GD trials

SPINA Thyr 3.4.2 released

SPINA Thyr has been released in version 3.4.2.

This hot fix release resolves an issue where calculation of TTSI could result in wrong values under certain conditions. Since this error may result in false negative results with regard to screening for resistance to thyroid hormones (Refetoff syndrome, RTH) it is highly encouraged to download and install the new version. Usage of SPINA Thyr versions 3.4 or 3.4.1 is no longer recommended.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2014-06-24

SPINA Thyr 3.4.1 available

With immediate effect SPINA Thyr is available in version 3.4.1. This is a bug fix release that addresses known issues predominantly affecting Windows and Linux.

Ab sofort ist SPINA Thyr in der Version 3.4.1 verfügbar. Diese Version korrigiert einige kleinere Fehler, insbesondere unter Windows und Linux.

Posted by Dr. Johannes W. Dietrich, M.D. 2014-05-27 Labels: 3.4.1 Bug fix

Major upgrade to SPINA Thyr to implement multiple new features

SPINA Thyr has been released in version 3.4. This new version is a major upgrade that implements a plethora of new functions. The most important new feature is the option to calculate Jostel's TSH index and TTSI, two simple estimates of central homeostatic function that have been requested my many users. Additionally, SPINA Thyr is now able to export results of calculations as text files or HL7 messages. Moreover, handling of reference ranges has been improved and multiple bugs were fixed.... read more

Posted by Dr. Johannes W. Dietrich, M.D. 2014-03-14 Labels: 3.4 versions TSHI TTSI HL7

SPINA Thyr version 3.3.1 released.

SPINA Thyr has been released in version 3.3.1. This bug-fix release addresses multiple minor issues. Additionally, it is the first code-signed version, which allows easier launching on modern versions of Mac OS X.

SPINA Thyr 3.3.1 is available from http://spina.sf.net or http://spina.berlios.de.

Posted by Dr. Johannes W. Dietrich, M.D. 2013-07-13

SPINA Thyr version 3.3 released.

With immediate effect, SPINA Thyr is available in version 3.3.

This is the most significant update to SPINA Thyr since version 3.0. New features of SPINA Thyr 3.3 include a reporting module for reference values, an option that allows for recording substitution therapy with thyroid hormones and an improved printing function. Additionally, numerous bugs have been fixed.

SPINA Thyr 3.3 is free software that is available for Mac OS X, Windows and Linux from http://spina.sf.net. Older versions are still available for Mac OS Classic and Palm OS.

Posted by Dr. Johannes W. Dietrich, M.D. 2013-02-13 Labels: Announcements Updates Versions

SPINA Thyr version 3.2.0 for Palm OS

SPINA Thyr has been released in version 3.2.0 for Palm OS. This new version contains bug fixes, an improved calculation engine and new features for the user interface including extended support for devices with keyboard and for the JogDial® in Sony Clié devices.

Posted by Dr. Johannes W. Dietrich, M.D. 2010-06-15

SPINA Thyr version 3.2.0 for Linux

SPINA Thyr 3.2 has been released for Linux. The new version is based on the same code foundation as the Windows and the Mac OS X edition (Lazarus / Free Pascal). It is available for free along with source code under a BSD license.

Posted by Dr. Johannes W. Dietrich, M.D. 2010-01-21

SPINA Thyr version 3.2.0 for Mac and Windows

SPINA Thyr has been released in final version 3.2.0 for Mac OS X and Windows along with source code for Lazarus / Free Pascal.

Posted by Dr. Johannes W. Dietrich, M.D. 2010-01-20

SPINA Thyr version 3.2 Beta for Palm OS

Beta version of SPINA Thyr 3.2 for Palm OS. It features bug fixes and implements planned features that were missing in the alpha versions. See http://spina.medical-cybernetics.de for details.

Posted by Dr. Johannes W. Dietrich, M.D. 2009-03-10

SPINA Thyr version 3.2 Alpha 2 for Palm OS

Today, a new alpha version of SPINA-Thyr for Palm OS has been released. It features several improvements in the user interface including support for color on capable devices.

Posted by Dr. Johannes W. Dietrich, M.D. 2009-02-19

SPINA Thyr version 3.2 Alpha for Palm OS

By numerous request, SPINA Thyr has finally been developed for Palm OS. The first alpha version of this BSD licensed software that has been developed with winsoft PocketStudio requires Palm OS 3.5 or newer, or Garnet OS.

Posted by Dr. Johannes W. Dietrich, M.D. 2009-02-16

SPINA Thyr version 3.2 Beta for Windows

Beta release of SPINA Thyr 3.2.0 for Windows released. This version is based on the novel unified code foundation that is written in Lazarus and Free Pascal, and that is shared with the Mac OS X version of SPINA Thyr.

Posted by Dr. Johannes W. Dietrich, M.D. 2009-01-07

SPINA Thyr version 3.2 Beta for Mac OS X

Beta release of SPINA Thyr 3.2.0 for Mac OS X. Version 3.2 is the first release that supports OS 10.4 or newer. This novel unified code is written in Lazarus and Free Pascal, and will lay the foundation for all future releases of SPINA Thyr on different platforms.

Posted by Dr. Johannes W. Dietrich, M.D. 2008-12-11

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