What's new for 2017 DeCS
This article highlights the additions and changes to DeCS in 2017.
Totals by type of terminology
eng=English; spa=Spanish; por=Portuguese
*The variation on DeCS is smaller than on MeSH because some of its new descriptors already existed in DeCS' previous versions.
Vocabulary changes for 2017
The ten subcategories receiving the greatest number of new descriptors:
New descriptors per category
MeSH is available in RDF Linked Data format.
2017 MeSH is available for download in XML, ASCII and MeSH / MARC formats.
a) accession numbers for sequences deposited in a molecular sequence databank, such as Genbank
4. Disease headings: The indexing policy was clarified to coordinate with either Humans or Animals, as appropriate to the article. If not specified in the article, then indexers will add Humans, based on a review of existing citations that guided this recommendation.
a) Human diseases: if not specified in the article, then indexers will add Humans, based on a review of existing citations that guided this recommendation.
(i) is used for:
1 - general articles on veterinary diseases
(ii) is not applied when:
1 - disease term /veterinary is assigned
a) Computed Tomography Angiography
6. Adult Stem Cells: this term has a new MeSH scope note. Some entry terms were removed. Selected related headings are:
a) Adult Germline Stem Cells, restricted to males, with the following scope note: "Progenitor stem cells found in the testicles".
8. Immunogenicity, Vaccine and Vaccine Potency: the emphasis of Vaccine Potency is on the dose. Sometimes, both headings may be used to cover the general and specific concepts.
9. Immunotherapy: indexing policy on when to use /drug therapy or /therapy on the disease term:
a) if a named drug, then use /drug therapy;
11. Network Meta-Analysis: Indexing policy is to coordinate with Meta-Analysis [Publication Type] if pertinent.
12. Protein Domains: many new headings were added to the G2 Tree.
13. Chocolate and Cacao: Chocolate was promoted to a MeSH Heading. Previously it was an Entry Term to Cacao.
14. MeSH Publication Types: two new Publication Types, Calendars and Study Guide, are available for catalogers but will not be used by MEDLINE indexers.
15. Non-Medical Public and Private Facilities [J03]: This new tree was introduced for 2017 MeSH and gathers about 40 MeSH headings in one spot. Most of these headings remain in their original tree locations as well. Note that there are no children for Private Facilities or Public Facilities. Indexing policy is to coordinate with these headings only when the specific type of facility is discussed. Indexers will not try to determine if a facility is private or public.
a) Board diving regulations in public swimming pools and risk of injury.
b) Prevention of respiratory tract infections: Situation in 12 private day care centers in the city of Buenos Aires.
16. Harmonization between MeSH and DeCS vocabularies: modifications of the headings below are related to the solution of the MeSH-DeCS conceptual duplication or the hierarchical code modifications categories exclusively DeCS. For more detailed changes in hierarchical codes see MeSH tree number changes and MeSH and DeCS tree number changes.
a) Terms exclusively DeCS in 2016 that became part of MeSH concepts in its 2017 version:
As an example, see the new hierarchical branch in category B descriptor Ocimum sanctum, embodied by MeSH.
To see this example in DeCS Search System, click here.
b) Terms exclusively MeSH in 2016 that became part of DeCS in its 2017 version:
The new MeSH Browser was launched on November 16, 2016. For more information see New MeSH Browser Available. The browser still displays MeSH on Demand.
MeSH Protein Project
New protein classes have been added to MeSH as part of an ongoing project to update and align MeSH protein classes with the gene families described by the Human Genome Nomenclature Committee (HGNC). A second part of the project involves creating organism-specific protein Supplemental Concept Records (SCRs) for model organism species. The process for creating descriptors included the promotion SCRs to descriptors and creating new organism-specific protein SCRs that use the new descriptors as their Heading Mapped-To values. In addition, Year-end processing tasks were used to populate existing citations with the new organism-specific protein SCRs.
Protein editing work:
2017 G tree changes
G tree "Processes" descriptors were merged with the "Phenomena" descriptors as narrower sub-concepts, except for those that did not have a corresponding "Phenomena" descriptor to merge into. For example, the descriptor Biochemical Processes was merged with Biochemical Phenomena. And all the child descriptors of Processes became the children of Phenomena. This was done to simplify the trees and to discontinue distinguishing what is a process and what is a phenomenon but with the understanding that processes are a type of or part of phenomena.
MeSH added all valid terms and concepts, not already in MeSH, from the PubMed Dietary Supplement literature subset search strategy developed jointly by NLM and the Office of Dietary Supplements at the National Institutes of Health.
New tree top J03 (Non-Medical Public and Private Facilities) was created in the MeSH vocabulary and populated with current descriptors from other trees and several new categories of public facilities.
1. In order to improve indexing consistency and efficiency and to make MEDLINE searching easier and more straightforward, a new subheading, /diagnostic imaging, was added. Three existing subheadings were deleted: /radiography,
/radionuclide imaging, and /ultrasonography.
Additional reasons for these changes are:
a) /diagnostic imaging is a broader subheading that covers many other existing diagnostic imaging techniques other than just radiography, radionuclide imaging, and ultrasonography;
c) indexing policy for the new subheading /diagnostic imaging is:
(i) use for the Disease and/or Organ MeSH headings;
1 - Multimodal imaging in detection of pancreatic cancer.
2. The following table shows how the /diagnostic tree was modified:
3. /pathology is now only treed under /anatomy & histology as a sibling to /cytology:
Entry Combination Revisions
There are 12 new Entry Combinations for 2017:
Chemical Editing Project to Update UNIIs and EC Numbers
We have an ongoing project to update MeSH chemicals with UNII (Unique Ingredient Identifier) numbers from the FDA SRS system. Additions and changes were made to UNIIs in over 1,500 of the top posting Supplementary Concept Records. This brings the total number of UNIIs in MeSH to 14,853.
Other pertinent articles:
Schulman JL. What's New for 2017 MeSH®. NLM Tech Bull. 2016 Sep-Oct;(412):e6. Available in Internet: http://www.nlm.nih.gov/pubs/techbull/nd16/nd16_mesh.html
Adaptation by: Health Terminologies and Classifications Section at BIREME/PAHO/WHO