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Use EMTREE to Find Appropriate Search Terms?
TOPIC: The advantage of using scientific literature databases on Dialog is that publishers of databases such as EMBASE® (File 73,72) hire medical specialists who assign terms and codes in accordance with the file’s classification system called EMTREE. EMTREE is a highly developed, hierarchically structured controlled vocabulary, consisting of more than 50,000 terms and nearly 210,000 synonyms.
The online equivalent to Excerpta Medica Abstract Journals, EMBASE is about the most current biomedical database available today, covering developing trends in gene therapy, biomedical engineering and instrumentation in addition to drug research, pharmacology, pharmacoeconomics, human medicine and toxicology.
Related databases with online thesauri include MEDLINE® (File 155), Inspec® (File 2) and Ei Compendex® (File 8) .
In this example, you will use EMTREE to find appropriate index terms to conduct the most comprehensive search on the use of angiogenesis inhibitors to treat ovarian cancer.
COMMAND SUMMARY
BEGIN 72
EXPAND ANGIOGENESIS INHIBITOR
EXPAND E3
SELECT ANGIOGENESIS INHIBITOR!/MAJ,HUMAN,ENG
EXPAND OVARIAN CANCER
EXPAND E3
SELECT OVARY CANCER!/MAJ,HUMAN,ENG
SELECT S1 AND S2
SELECT S3/2007:2008
TYPE S4/8/1-5
TYPE S4/7/4
HOW TO...

1. BEGIN File 72 to search EMBASE from 1993 to present.
2. EXPAND a term as a word or phrase. Notice the third column, RT, indicates 65 related terms. The Items column shows the number of records that contain the word or phrase.
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?b 72
File 72:EMBASE 1993-2008/Oct 08
(c) 2008 Elsevier B.V.
Set Items Description
--- ----- -----------
?e angiogenesis inhibitor
Ref Items RT Index-term
E1 0 1 ANGIOGENESIS INDUCING AGENTS
E2 3 1 ANGIOGENESIS INHIBITION
E3 5964 65 *ANGIOGENESIS INHIBITOR
E4 516 ANGIOGENESIS INHIBITOR --ADVERSE DRUG REACTION
E5 1016 ANGIOGENESIS INHIBITOR --CLINICAL TRIAL --CT
E6 95 ANGIOGENESIS INHIBITOR --DRUG ADMINISTRATION -
E7 331 ANGIOGENESIS INHIBITOR --DRUG ANALYSIS --AN
E8 740 ANGIOGENESIS INHIBITOR --DRUG COMBINATION --CB
E9 398 ANGIOGENESIS INHIBITOR --DRUG COMPARISON --CM
E10 114 ANGIOGENESIS INHIBITOR --DRUG CONCENTRATION --
E11 958 ANGIOGENESIS INHIBITOR --DRUG DEVELOPMENT --DV
E12 505 ANGIOGENESIS INHIBITOR --DRUG DOSE --DO
. . . . |

3. Expand E3 to see the related terms in column RT.
The first 50 related terms appear. The letters in the third column, Type, identifies synonyms, broader and narrower terms. The narrower terms appear to be drug names, laboratory codes and chemical names (not shown here). You can select appropriate R number terms or just browse the list.
When you PAGE down (P) the R reference numbers start over as R1, so it is important to SELECT the R numbers you want before entering P (not shown here).
4. Use Dialog’s EXPLODE command by appending an exclamation point (!) to the end of the phrase. This automatically SELECTS the main term and all of its narrower (N) terms, including the ones that fell after R50.
Use database LIMIT features by restricting results to major focus about human subjects in English.
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?e e3
Ref Items Type RT Index-term
R1 5964 65 *ANGIOGENESIS INHIBITOR
R2 0 S 1 ANGIOGENESIS INHIBITORS
R3 0 S 1 ANTIANGIOGENIC AGENT
R4 0 S 1 ANTIANGIOGENIC DRUG
R5 0 S 1 NEOVASCULARIZATION INHIBITOR
R6 0 S 1 TUMOR VASCULARIZATION INHIBITOR
R7 0 S 1 VASCULARIZATION INHIBITOR
R8 76371 B 1450 ANTINEOPLASTIC AGENT
R9 3558 B 1381 CARDIOVASCULAR AGENT
R10 339 N 11 AE 941
R11 186 N 9 ANECORTAVE
R12 42 N 2 ANGIOSTATIC PROTEIN
R13 1361 N 4 ANGIOSTATIN
R14 131 N 2 ANGIOZYME
. . . .
R44 2101 N 13 SORAFENIB
R45 305 N 6 SQUALAMINE
R46 1915 N 21 SUNITINIB
R47 378 N 12 TANOMASTAT
R48 1413 N 6 THROMBOSPONDIN 1
R49 241 N 6 THROMBOSPONDIN 2
R50 111 N 6 TUMSTATIN
Enter P or PAGE for more
?s angiogenesis inhibitor!/maj,human,eng
S1 4851 ANGIOGENESIS INHIBITOR!/MAJ,HUMAN,ENG |

5. EXPAND the next concept. There is one related term, but there are no records that contain this phrase. Notice the dearth of items for the terms below.
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?e ovarian cancer
Ref Items RT Index-term
E1 2 OVARIAN BORDERLINE TUMOR
E2 1 OVARIAN BURKITT LYMPHOMA
E3 0 1 *OVARIAN CANCER
E4 1 OVARIAN CANCER ANTIGEN
E5 1 OVARIAN CANCER ANTIGEN (CA 125) MAGIA
E6 1 OVARIAN CANCER ANTIGEN (CA 125) MAGIA L
E7 10 OVARIAN CANCER G PROTEIN COUPLED RECEPTOR 1
E8 1 OVARIAN CANCER IMMUNOREACTIVE ANTIGEN DOMAIN C
. . . . |
6. EXPAND the appropriate E reference number. The letter U under the Type column means USE this term. Look at the number of records now with the EMTREE preferred term.
A trick to use in EMTREE, once you know how it works, is to bypass the first EXPAND. Enter EXPAND (<term>) enclosed in parentheses. For example, EXPAND (OVARIAN CANCER). If it is an EMTREE term or has related terms, it will take you right to the EMTREE screen.
7. Use EXPLODE by SELECTing the preferred term and appending an exclamation point to the end of the term or phrase. If the term does not have narrower terms, Dialog will SELECT the phrase and provide a message that there are no narrower terms.
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?e e3
Ref Items Type RT Index-term
R1 0 1 *OVARIAN CANCER
R2 19489 U 12 OVARY CANCER
Enter P or PAGE for more
?select ovary cancer!/maj,human,eng
S3 15420 OVARY CANCER!/maj,human,eng
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8. Combine Sets 1 and 2 (S1, S2) so that each record will contain both concepts limited to major focus, human subjects and English language.
9. Use database LIMITS to restrict retrieval to a range of publication years. The colon acts as OR.
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?s s1 and s2
5068 S1
15668 S2
S3 69 S1 AND S2
?s s3/2007:2008
69 S3
995036 PY=2007 : PY=2008
S4 23 S3/2007:2008
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10. TYPE records in Format 8 to browse titles, indexing and publication years.
Some records index manufacturers and brand names.
To select the appropriate record number, look at the range of records in the TYPE command (e.g., 4/8/2).
Note: Some portions of the records have been omitted from the display.
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?t s4/8/1-2
4/8/1
DIALOG(R)File 72: EMBASE
(c) 2008 Elsevier B.V. All rights reserved.
0082506813 EMBASE No: 2008349512
Antiangiogenic therapy and ovarian cancer
Publication Date: February 1, 2008
Brand Name/Manufacturer: abt 627; ae 941; avastin/Genentech/United States; azd 2171; bay 43 9006; cytoxan; doxil; erbitux; evizon/Genaera; genexol; gw 786034; neovastat; nexavar; osi 774; ptk 787; pxd 101/CuraGen; recentin; su 11248; sutent; tarceva; xinlay; zk 222584
Manufacturer name: CuraGen; Genaera; Genentech/United States
Drug Descriptors:
* angiogenesis inhibitor--adverse drug reaction--ae; *angiogenesis inhibitor --drug therapy--dt; *angiogenesis inhibitor--pharmacoeconomics--pe; * angiogenesis inhibitor--pharmacology--pd
. . . .
4/8/2
DIALOG(R)File 72: EMBASE
(c) 2008 Elsevier B.V. All rights reserved.
0082504852 EMBASE No: 2008309848
Posterior reversible encephalopathy syndrome during sunitinib therapy
Publication Date: June 1, 2008
Brand Name/Manufacturer: sutent/Pfizer/United States
Manufacturer name: Pfizer/United States
Drug Descriptors:
* sunitinib--adverse drug reaction--ae; *sunitinib--drug therapy--dt
clonazepam; fosphenytoin sodium; gadolinium
Medical Descriptors:
* kidney carcinoma--drug therapy--dt; *ovary metastasis--drug therapy--dt abdominal pain--side effect--si; adult; antiangiogenic therapy; article; . . . . |
11. TYPE Set 4 (S4), Record 2 in Format 9 to display the complete record.
EMBASE provides the author’s contact information.
EMBASE also provides a Digital Object Identifier, which connects you to the journal publisher’s website where you may purchase the fulltext or obtain it if you have an electronic journal subscription.
Note: Part of this record is omitted from the display. |
?t s4/9/2
4/9/2
DIALOG(R)File 72: EMBASE
(c) 2008 Elsevier B.V. All rights reserved.
0082504852 EMBASE No: 2008309848
Posterior reversible encephalopathy syndrome during sunitinib therapy
Cumurciuc R.; Martinez-Almoyna L.; Henry C.; Husson H.; de Broucker T. Service de neurologie, hopital Delafontaine, 2, rue du Dr-Delafontaine, 93200 Saint-Denis, France
Author email: thomas.debroucker@ch-stdenis.fr
Corresp. Author/Affil: de Broucker T.: Service de neurologie, hopital Delafontaine, 2, rue du Dr-Delafontaine, 93200 Saint-Denis, France
Corresp. Author Email: thomas.debroucker@ch-stdenis.fr
Revue Neurologique ( Rev. Neurol. ) ( France ) June 1, 2008 , 164/6-7 (605-607)
CODEN: RENEA ISSN: 0035-3787
Publisher Item Identifier: S0035378708002932
Item Identifier (DOI): 10.1016/j.neurol.2008.03.007
Document Type: Journal ; Article Record Type: Abstract
Language: English Summary language: English; French
Number of References: 11
A case of posterior reversible encephalopathy syndrome (PRES) occurring in a women treated by sunitinib for an ovarian metastatis of a renal cell carcinoma is described. This is the third case described in the literature. The three cases are very similar except for the delay to onset of the PRES (one week to five months). Both antiangiogenic and prohypertensive effects of sunitinib are probably involved in the pathophysiology of PRES. Physicians should be aware of this potentially life-threatening side-effect of sunitinib easily controlled by withdrawing sunitinib and symptomatic treatment. (c) 2008 Elsevier Masson SAS. All rights reserved.
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