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<TITLE>What's New for 2003 MeSH. NLM Technical Bulletin. Nov-Dec 2002</TITLE>
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<TR><TD width="30">&nbsp;</TD><TD width="470"><FONT size="2"><strong>November 22, 2002</strong> [posted]</font><BR></TD><TD width="30">&nbsp;</TD></TR>
<TR><TD width="30">&nbsp;</TD><TD width="470">
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<TR><TD width="30">&nbsp;</TD><TD width="470"><FONT size="5"><STRONG>What's New for 2003 MeSH<SUP><FONT size="-2">&#174;</FONT></SUP></STRONG></FONT><BR></TD><TD width="30">&nbsp;</TD></TR>
<TR><TD width="30">&nbsp;</TD><TD width="470">
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his article highlights additions and changes to the National Library of Medicine's (NLM's) Medical Subject Headings
(MeSH) for 2003 including several areas of special emphasis.
</P>
<P>
A total of 1250 new descriptors were added to MeSH 2003. One descriptor, Nanotechnology was added after the
publication of MeSH for 2002 bringing to 1251 the number of descriptors added since the 2002 MeSH.
Ninety-three descriptors (93) were replaced with more up-to-date terminology, 20 descriptors were deleted, and
more than 1727 see references (entry terms) were added. Lists of all new descriptors and of deleted and replaced
descriptors are posted on the <A HREF="/mesh/meshhome.html">MeSH Web site</A>.
The Introduction to the Annotated Alphabetic List - 2003 is
also posted on this site. The <A HREF="/mesh/MBrowser.html">MeSH Browser</A> is available with 2003 MeSH.
2002 MeSH is available as an optional link.
</P>
<!-- link to alphabetic list removed 5-14-2019-->
<P>
A new subheading, ethics, has been added with 2003 MeSH. It is "used with techniques and activities for
discussion and analysis with respect to human and social values."
</P>
<P>
The Publication Type, Electronic Journals, was deleted. It had been previously used for cataloging but not for
indexing journal articles. With a shift away from emphasis on physical form, it no longer was needed and, therefore, was removed.
</P>
<P>
The tree arrangement of the age group descriptors has changed for 2003 MeSH.
</P>
<P>
The following paragraphs give highlights of subject areas that were greatly expanded or arranged for 2003.</P>
<P>
<STRONG>Bioethics</STRONG><BR>
The ongoing joint effort with the Kennedy Institute of Ethics resulted in
significant expansion and enhancement of terminology in the area of bioethics.
Notable examples are the new "ethics" subheading and more than 89 new bioethics descriptors.
</P>
<P>
<STRONG>Plants and Phytotherapy</STRONG><BR>
The terminology of plants including family, genera and species has been greatly expanded.
Descriptors have been added for plant preparations in the D24 and D26 Trees. Indexing of articles in
which plants or plant materials are considered therapeutically will be coordinated with Phytotherapy and
the most specific available descriptor from the B6 Organisms-Plants Tree.
</P>
<P>
<STRONG>Chemical Actions and Uses</STRONG><BR>
Chemical structure terms (such as Aminoglycosides) are being removed from the Actions branch (D27) as
the first step in revision of the Pharmacological Actions. This effort will continue into next year.
</P>
<P>
<STRONG>Organisms</STRONG><BR>
The coverage of microorganisms associated with notifiable diseases has been expanded.
This project was done in cooperation with the Epidemiology Program Office of the Centers for Disease Control (CDC).
Both new headings and new entry terms were created and especially notable are the enhanced
terminology of species in the genus <EM>Ehrlichia</EM>, and the serovars in the species <EM>Leptospira interrogans</EM>.
</P>
<P>
<STRONG>Crustacea</STRONG><BR>
These have been expanded and completely revised to conform to scientific nomenclature with new
headings containing scientific names plus many new entry terms for common names.
</P>
<P>
<STRONG>Anatomy</STRONG><BR>
The A1 Trees (Body Regions) were completely revised to accommodate new headings for Abdominal Cavity,
Thoracic Cavity, Upper Extremity, and Lower Extremity, conforming to the official nomenclature in
<EM>Terminologica Anatomica</EM>.
</P>
<P>
<STRONG>Integumentary System</STRONG><BR>
A new Tree A17 (Integumentary System) was created and includes descriptors previously in other A categories. It is defined as
"the outer covering of the body composed of the skin and the skin appendages, which are the hair, the nails;
and the sebaceous glands and the sweat glands and their ducts."
</P>
<P>
<STRONG>Genetics</STRONG><BR>
Genetics terminology was re-structured from subgroupings based on field of study to three new categories:
Genetic processes (G5), Genetic phenomena (G13), and Genetic structures (G14). Many new descriptors
were also created with the reorganization.
</P>
<P>
<STRONG>ADP-RiboseTransferases/NAD Nucleosidases</STRONG><BR>
The ADP-RiboseTransferase/NAD Nucleosidase group of enzymes (including all of the bacterial toxins
that fall into this category of enzymes) and their products, were revised and updated to clearly distinguish
the polyADP-Ribose transferases, the mono-ADP-ribose transferases, the ADP-ribosyl cyclases, and the sirtuins.
</P>
<P>
<STRONG>Lectins</STRONG><BR>
The family of sugar-binding proteins called lectins is now divided into several new functional categories
of proteins treed under lectins. The MeSH heading Plant Lectins was specifically created for the broad
category of plant proteins that is generally discussed separately from the lectins that occur in various mammalian
species. Citation maintenance will be used to maintain plant-related citations previously indexed under Lectins to
Plant Lectins.
</P>
<P>
<STRONG>Vesicular Transport Proteins</STRONG><BR>
A new descriptor, Vesicular Transport Proteins, was created to represent the broad category of proteins
that are involved in transporting substances via vesicles throughout the cell. There are two new and two existing
subcategories and a total of 25 descriptors now treed under this heading.
</P>
<P>
<STRONG>Peptide Hormones</STRONG><BR>
A new descriptor, Peptide Hormones, was created. There are over 60 descriptors indented under this heading.
The heading, Intercellular Signaling Peptides and Proteins, was also created. There are over 40 descriptors
indented under this heading that represent paracrine (locally acting) protein and peptide factors.
</P>
<P>
<STRONG>RNA-Binding Proteins</STRONG><BR>
Several new protein categories were created under RNA-Binding Proteins including mRNA Cleavage and
Poladenylation Factors, Poly(A)-Binding Proteins, Heterogeneous-Nuclear Ribonucleoproteins, and RNA
Cap-Binding Proteins.
</P>
<P>
<STRONG>Integrins</STRONG><BR>
The integrins are a family of receptors in alpha and beta chains which are now organized as separate
descriptors under the integrins tree. Also included under integrins are headings for many familiar integrin
alpha and beta chain combinations (e.g., Integrin alphaXbeta2) along with their more common names
(e.g., Complement Receptor Type 4).
</P>
<P>
<STRONG>Ephrins and Eph Receptors</STRONG><BR>
New descriptors were added for the Ephrins and Eph Receptors. These are in accordance with the recently
established nomenclature used for this rapidly emerging group of signaling proteins and their receptors.
</P>
<P>
<STRONG>Age Groups - Why the Changes?</STRONG><BR>
After many years, the Tree arrangement of age groups and other descriptors formerly grouped with
age groups have been changed for 2003 MeSH. As the 2002 MeSH example below shows, Infant and Adolescence were
arranged under Child. In addition, descriptors such as Child of Impaired Parents are not limited to age 6-12
as was implied by its positioning in the Tree under Child do they no longer appear in the age groups. Adolescent is now a "sibling" to Adult, Child, and
Infant.
</P>
<P>
Please also note that the descriptor, Adolescence has been chaned to Adolescent. In addition, the descriptors for population or patient groups were separated from those truly for age groups
for 2003 MeSH.
</P>
<P><STRONG>2003</STRONG></P>
<DL>
<DT>Adolescent</DT>
<DT>Adult
<DD>Aged
<DL><DT>
<DD>Aged, 80 and over
<DD>Frail Elderly
</DL>
<DD>Middle Age
<DT>Child
<DD>Child, Preschool
<DT>Infant
<DD>Infant, Newborn
<DD>Infant, Low Birth Weight
<DL><DD>Infant, Small for Gestational Age
<DD>Infant, Very Low Birth Weight
</DL>
<DD>Infant, Postmature
<DD>Infant, Premature
</DL>
<P><STRONG>2002</STRONG></P>
<DL>
<DT>Child (partial array)
<DD>Adolescence+
<DD>Child, Abandoned
<DD>Child, Exceptional+
<DD>Child, Hospitalized
<DD>Child, Institutionalized
<DD>Child of Impaired Parents
<DD>Child, Preschool
<DD>Child, Unwanted
<DD>Disabled Children
<DD>Homeless Youth
<DD>Infant+
<DD>Only Child
<DD>Etc.
</DL>
<P>
<STRONG>MeSH Publications and Data Distribution</STRONG><BR>
MeSH publications (i.e., <EM>Annotated MeSH</EM>, <EM>MeSH Tree Structures</EM>, and <EM>Permuted MeSH</EM>)
were again produced this year using portable document files (PDF) created from MeSH
data maintained under the Oracle<SUP><FONT size="-2">&#174;</FONT></SUP> Database Management System. 2003 MeSH data are also available in XML, the same general format used
for MEDLINE<SUP><FONT size="-2">&#174;</FONT></SUP> data. For more information on downloading 2003 MeSH data go to <A HREF="http://www.nlm.nih.gov/mesh/filelist.html">
http://www.nlm.nih.gov/mesh/filelist.html</A>.
<P>
<STRONG>PubMed</STRONG><BR>
PubMed will use 2003 MeSH in its translation tables and MeSH Browser as well as in the citation data as
soon as end-of-year activities are completed. Please see the article, <A HREF="/pubs/techbull/so02/so02_endofyear.html">
<EM>MEDLINE<SUP><FONT size="-2">&#174;</FONT></SUP>/PubMed<SUP><FONT size="-2">&#174;</FONT></SUP>
End-of-Year Activities. NLM Tech Bull. 2002 Sep-Oct;(328):e7</EM></A>, for more information
about these activities.
</P>
<P>
For more information about 2003 MeSH, please see the <A HREF="/mesh/meshhome.html">MeSH Home Page</A>.
</P>
<DL>
<DT>For questions concerning content, distribution, format, etc., please contact:
<DD>Jacque-Lynne Schulman
<DD>Medical Subject Headings
<DD>email: schulman@nlm.nih.gov
</DL>
<BR><BR>
<P>
<!--************************Indicate article author and section below*******************************-->
<STRONG>By Jacque-Lynne Schulman</STRONG><BR>
<STRONG>MeSH Section</STRONG><BR>
</P>
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<EM>Schulman JL. What's New for 2003 MeSH<SUP><FONT size="-2">&#174;</FONT></SUP>. NLM Tech Bull. 2002 Nov-Dec;(329):e5.</EM>
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