<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-10-12T23:42:34Z</responseDate><request verb="GetRecord" identifier="oai:repositorio.ufpb.br:123456789/998" metadataPrefix="dim">https://repositorio.ufpb.br/oai/request</request><GetRecord><record><header><identifier>oai:repositorio.ufpb.br:123456789/998</identifier><datestamp>2018-09-05T23:20:37Z</datestamp><setSpec>com_123456789_2373</setSpec><setSpec>com_123456789_401</setSpec><setSpec>col_123456789_2379</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:doc="http://www.lyncode.com/xoai" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
<dim:field mdschema="dc" element="creator" lang="pt_BR">Gusmão, Anaís Bezerra de</dim:field>
<dim:field mdschema="dc" element="creator" qualifier="Lattes" lang="pt_BR">http://lattes.cnpq.br/1108028306696510</dim:field>
<dim:field mdschema="dc" element="date" qualifier="accessioned">2016-03-09T14:19:22Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="available">2016-03-09T14:19:22Z</dim:field>
<dim:field mdschema="dc" element="date" qualifier="issued">2016-03-09</dim:field>
<dim:field mdschema="dc" element="identifier" qualifier="uri" lang="pt_BR">http://rei.biblioteca.ufpb.br:8080/jspui/handle/123456789/998</dim:field>
<dim:field mdschema="dc" element="description" qualifier="abstract" lang="pt_BR">Thymol&#xd;
is  a&#xd;
monoterpene&#xd;
present&#xd;
in  the  constitution&#xd;
of  the  essential  oils&#xd;
of  many&#xd;
plants&#xd;
and&#xd;
is  well  known&#xd;
for  its&#xd;
broad  spectrum&#xd;
antimicrobial  activity&#xd;
and  is  also&#xd;
reported in the literature&#xd;
their activities&#xd;
on the cardiovascular system&#xd;
. &#xd;
Therefore&#xd;
, this &#xd;
study &#xd;
aimed  to  evaluate&#xd;
the&#xd;
chronotropic&#xd;
and&#xd;
inotropic&#xd;
effects induced  by&#xd;
thymol&#xd;
in&#xd;
the&#xd;
SHR&#xd;
rats&#xd;
, &#xd;
an  essential  model  animal  of  hypertension&#xd;
as  well  as&#xd;
in  their&#xd;
normot&#xd;
ensive&#xd;
control&#xd;
WKY&#xd;
, &#xd;
by&#xd;
system  organ&#xd;
technique&#xd;
in&#xd;
isolated&#xd;
vitro&#xd;
using&#xd;
the &#xd;
atria&#xd;
isolated  from  these&#xd;
animals.  In&#xd;
SHR&#xd;
, &#xd;
thymol&#xd;
induced  negative  chronotropic&#xd;
effects &#xd;
(&#xd;
pD&#xd;
2 &#xd;
= 3.9&#xd;
±&#xd;
0.029&#xd;
; &#xd;
E&#xd;
max&#xd;
=&#xd;
100&#xd;
±&#xd;
0&#xd;
%, n &#xd;
= 10) and&#xd;
inotropic&#xd;
(&#xd;
pD&#xd;
2&#xd;
=&#xd;
4.6 ±&#xd;
0.080&#xd;
; &#xd;
E&#xd;
max&#xd;
=&#xd;
100&#xd;
±&#xd;
0&#xd;
%, n &#xd;
= 7). &#xd;
In WKY rats, the compound also induced reduction in heart &#xd;
rate  (pD&#xd;
2&#xd;
=  4.0  ±  0.037;  E&#xd;
max&#xd;
=  100  ±  0%,  n  =  5)  and  reduction  in  contractile  force &#xd;
(pD&#xd;
2&#xd;
=  4.6  ±  0.058;  E&#xd;
max&#xd;
=  100  ±  0%,  n  =  7). &#xd;
Both  in&#xd;
hypertensive  animals&#xd;
, &#xd;
as&#xd;
in &#xd;
normotensive&#xd;
animals,&#xd;
the negative&#xd;
inotropic effect&#xd;
showed greater&#xd;
power (&#xd;
p &lt;&#xd;
0.001) &#xd;
when   compared&#xd;
to   the   negative&#xd;
chronotropic   effect&#xd;
. &#xd;
When   comparing   the&#xd;
chronotropic&#xd;
and&#xd;
inotropic&#xd;
effects  induced  by&#xd;
thymol&#xd;
in  SHR&#xd;
and&#xd;
WKY  rats&#xd;
, &#xd;
it  was &#xd;
observed   that&#xd;
the&#xd;
compound   induced&#xd;
similar &#xd;
responses&#xd;
in   hypertensive&#xd;
and&#xd;
normotensive animals. In conclusion, these&#xd;
results suggest that the&#xd;
effect induced by&#xd;
thymol&#xd;
on the strength of&#xd;
cardiac contraction&#xd;
is&#xd;
more powerful than&#xd;
the effect of this&#xd;
monoterpene&#xd;
on the frequency&#xd;
of heartbeat and&#xd;
that th&#xd;
ere is no&#xd;
statistical difference &#xd;
between&#xd;
normotensive&#xd;
and&#xd;
hypertensive animals&#xd;
in the evaluated&#xd;
parameters</dim:field>
<dim:field mdschema="dc" element="description" qualifier="provenance" lang="en">Submitted by Fernando Vieira (nandogusto6@gmail.com) on 2016-03-09T14:19:22Z&#xd;
No. of bitstreams: 1&#xd;
ABG09032016.pdf: 1215685 bytes, checksum: bf319cc7aa8fe847b19355c6d3f5a1a4 (MD5)</dim:field>
<dim:field mdschema="dc" element="description" qualifier="provenance" lang="en">Made available in DSpace on 2016-03-09T14:19:22Z (GMT). No. of bitstreams: 1&#xd;
ABG09032016.pdf: 1215685 bytes, checksum: bf319cc7aa8fe847b19355c6d3f5a1a4 (MD5)</dim:field>
<dim:field mdschema="dc" element="description" qualifier="resumo">O  timol  é  um  monoterpeno  presente  na  constituição  dos  óleos  essenciais  de  um &#xd;
grande número de plantas e é muito conhecido por sua atividade antimicrobiana de &#xd;
amplo  espectro,  sendo  também  reportada&#xd;
s  na  literatura  suas  atividades  sobre  o &#xd;
sistema  cardiovascular.  Portanto,  o presente  trabalho  teve  como  objetivo  avaliar os &#xd;
efeitos cronotropico e inotropico induzidos pelo timol em ratos da linhagem SHR, um &#xd;
modelo  animal  de  hipertensão  essencial,  bem  como&#xd;
em  seu  controle  normotenso, &#xd;
ratos WKY, por meio da técnica &#xd;
de sistema de órgãos isolados &#xd;
in vitro&#xd;
utilizando os &#xd;
átrios  isolados  destes  animais&#xd;
.  Em  ratos  SHR,  o  timol  induziu  efeitos  cronotrópico &#xd;
(pD&#xd;
2&#xd;
= 3,9 ± 0,029; E&#xd;
máx &#xd;
= 100 ± 0%, n = 10) e inotrópico &#xd;
(pD&#xd;
2&#xd;
= 4,6 ± 0,080; E&#xd;
máx &#xd;
= &#xd;
100  ±  0%,  n  =  7  )  negativos.  Em  animais  WKY,  o  composto  também  induziu  a &#xd;
redução  da  frequência  cardíaca  (pD&#xd;
2&#xd;
=  4,0  ±  0,037;  E&#xd;
máx &#xd;
=  100  ±  0%,  n  =  5)  e &#xd;
redução  na  força  contrátil  (pD&#xd;
2&#xd;
=  4,6  ±  0,058;  E&#xd;
máx &#xd;
=  100  ±  0%,  n  =  7).  Tanto  n&#xd;
os &#xd;
animais  hipertensos,  quanto  nos  animais  normotensos,  o  efeito  inotrópico  negativo &#xd;
apresentou  maior  potencia  (p&lt;0,001)  quando  comparado  ao  efeito  cronotrópico &#xd;
negativo. Quando comparados os efeitos cronotrópicos e inotrópicos induzidos pelo &#xd;
timol  nos  ani&#xd;
mais  SHR  e  WKY,  foi  observado  que  o  composto  induziu  respostas &#xd;
similares  para  animais  hipertensos  e  normotensos. &#xd;
Em  conclusão,  estes  resultados &#xd;
sugerem que o efeito induzido pelo timol sobre a força de contração cardíaca é mais &#xd;
potente que o efeito deste m&#xd;
onoterpeno sobre a frequência de batimentos cardíacos &#xd;
e que não há diferença estatística entre os animais hipertensos e normotensos nos &#xd;
parâmetros avaliado</dim:field>
<dim:field mdschema="dc" element="language" qualifier="iso" lang="pt_BR">pt</dim:field>
<dim:field mdschema="dc" element="publisher" lang="pt_BR">Universidade Federal da Paraíba</dim:field>
<dim:field mdschema="dc" element="publisher" qualifier="initials" lang="pt_BR">UFPB</dim:field>
<dim:field mdschema="dc" element="relation" qualifier="ispartofseries">João Pessoa, PB: 2015.</dim:field>
<dim:field mdschema="dc" element="subject" lang="pt_BR">Timol</dim:field>
<dim:field mdschema="dc" element="subject" lang="pt_BR">Cronotropismo</dim:field>
<dim:field mdschema="dc" element="subject" lang="pt_BR">Inotropismo</dim:field>
<dim:field mdschema="dc" element="subject" lang="pt_BR">Hipertensão</dim:field>
<dim:field mdschema="dc" element="subject" qualifier="cnpq" lang="pt_BR">CNPQ:Ciências de Saúde: Farmácia</dim:field>
<dim:field mdschema="dc" element="title" lang="pt_BR">Efeitos cronotropico e inotropico negativos induzidos pelo timol em ratos espontaneamente hipertensos</dim:field>
<dim:field mdschema="dc" element="type" lang="pt_BR">TCC</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="advisor1" lang="pt_BR">Gonçalves, Islania Giselia Albuquerque</dim:field>
<dim:field mdschema="dc" element="contributor" qualifier="advisor1Lattes" lang="pt_BR">http://lattes.cnpq.br/1526195647743981</dim:field>
</dim:dim>
</metadata></record></GetRecord></OAI-PMH>