Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects
Autor(a) principal: | |
---|---|
Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Revista Brasileira de Anestesiologia (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-70942015000100001 |
Resumo: | BACKGROUND AND OBJECTIVES: In this study, we investigated the anesthetic and mucosal effects of the rectal application of dexmedetomidine to rats. METHODS: Male Wistar albino rats weighing 250-300 g were divided into four groups: Group S (n = 8) was a sham group that served as a baseline for the normal basal values; Group C (n = 8) consisted of rats that received the rectal application of saline alone; Group IPDex (n = 8) included rats that received the intraperitoneal application of dexmedetomidine (100 µg kg-1); and Group RecDex (n = 8) included rats that received the rectal application of dexmedetomidine (100 µg kg-1). For the rectal drug administration, we used 22 G intravenous cannulas with the stylets removed. We administered the drugs by advancing the cannula 1 cm into the rectum, and the rectal administration volume was 1 mL for all the rats. The latency and anesthesia time (min) were measured. Two hours after rectal administration, 75 mg kg-1 ketamine was administered for intraperitoneal anesthesia in all the groups, followed by the removal of the rats' rectums to a distal distance of 3 cm via an abdominoperineal surgical procedure. We histopathologically examined and scored the rectums. RESULTS: Anesthesia was achieved in all the rats in the Group RecDex following the administration of dexmedetomidine. The onset of anesthesia in the Group RecDex was significantly later and of a shorter duration than in the Group IPDEx (p < 0.05). In the Group RecDex, the administration of dexmedetomidine induced mild-moderate losses of mucosal architecture in the colon and rectum, 2 h after rectal inoculation. CONCLUSION: Although 100 µg kg-1 dexmedetomidine administered rectally to rats achieved a significantly longer duration of anesthesia compared with the rectal administration of saline, our histopathological evaluations showed that the rectal administration of 100 µg kg-1 dexmedetomidine led to mild-moderate damage to the mucosal structure of the rectum. |
id |
SBA-1_652cb448d2f385ad2037f5c6a26bb949 |
---|---|
oai_identifier_str |
oai:scielo:S0034-70942015000100001 |
network_acronym_str |
SBA-1 |
network_name_str |
Revista Brasileira de Anestesiologia (Online) |
repository_id_str |
|
spelling |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effectsDexmedetomidineRectumRatAnesthesiaMucosa BACKGROUND AND OBJECTIVES: In this study, we investigated the anesthetic and mucosal effects of the rectal application of dexmedetomidine to rats. METHODS: Male Wistar albino rats weighing 250-300 g were divided into four groups: Group S (n = 8) was a sham group that served as a baseline for the normal basal values; Group C (n = 8) consisted of rats that received the rectal application of saline alone; Group IPDex (n = 8) included rats that received the intraperitoneal application of dexmedetomidine (100 µg kg-1); and Group RecDex (n = 8) included rats that received the rectal application of dexmedetomidine (100 µg kg-1). For the rectal drug administration, we used 22 G intravenous cannulas with the stylets removed. We administered the drugs by advancing the cannula 1 cm into the rectum, and the rectal administration volume was 1 mL for all the rats. The latency and anesthesia time (min) were measured. Two hours after rectal administration, 75 mg kg-1 ketamine was administered for intraperitoneal anesthesia in all the groups, followed by the removal of the rats' rectums to a distal distance of 3 cm via an abdominoperineal surgical procedure. We histopathologically examined and scored the rectums. RESULTS: Anesthesia was achieved in all the rats in the Group RecDex following the administration of dexmedetomidine. The onset of anesthesia in the Group RecDex was significantly later and of a shorter duration than in the Group IPDEx (p < 0.05). In the Group RecDex, the administration of dexmedetomidine induced mild-moderate losses of mucosal architecture in the colon and rectum, 2 h after rectal inoculation. CONCLUSION: Although 100 µg kg-1 dexmedetomidine administered rectally to rats achieved a significantly longer duration of anesthesia compared with the rectal administration of saline, our histopathological evaluations showed that the rectal administration of 100 µg kg-1 dexmedetomidine led to mild-moderate damage to the mucosal structure of the rectum. Sociedade Brasileira de Anestesiologia2015-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-70942015000100001Revista Brasileira de Anestesiologia v.65 n.1 2015reponame:Revista Brasileira de Anestesiologia (Online)instname:Sociedade Brasileira de Anestesiologia (SBA)instacron:SBA10.1016/j.bjane.2013.09.005info:eu-repo/semantics/openAccessHanci,VolkanGülle,KanatKarakaya,KemalYurtlu,SerhanAkpolat,MeryemYüce,Mehmet FatihYüce,Fatma ZehraTuran,Isil Özkoçakeng2015-09-10T00:00:00Zoai:scielo:S0034-70942015000100001Revistahttps://www.sbahq.org/revista/https://old.scielo.br/oai/scielo-oai.php||sba2000@openlink.com.br1806-907X0034-7094opendoar:2015-09-10T00:00Revista Brasileira de Anestesiologia (Online) - Sociedade Brasileira de Anestesiologia (SBA)false |
dc.title.none.fl_str_mv |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
title |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
spellingShingle |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects Hanci,Volkan Dexmedetomidine Rectum Rat Anesthesia Mucosa |
title_short |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
title_full |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
title_fullStr |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
title_full_unstemmed |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
title_sort |
Rectal dexmedetomidine in rats: evaluation of sedative and mucosal effects |
author |
Hanci,Volkan |
author_facet |
Hanci,Volkan Gülle,Kanat Karakaya,Kemal Yurtlu,Serhan Akpolat,Meryem Yüce,Mehmet Fatih Yüce,Fatma Zehra Turan,Isil Özkoçak |
author_role |
author |
author2 |
Gülle,Kanat Karakaya,Kemal Yurtlu,Serhan Akpolat,Meryem Yüce,Mehmet Fatih Yüce,Fatma Zehra Turan,Isil Özkoçak |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Hanci,Volkan Gülle,Kanat Karakaya,Kemal Yurtlu,Serhan Akpolat,Meryem Yüce,Mehmet Fatih Yüce,Fatma Zehra Turan,Isil Özkoçak |
dc.subject.por.fl_str_mv |
Dexmedetomidine Rectum Rat Anesthesia Mucosa |
topic |
Dexmedetomidine Rectum Rat Anesthesia Mucosa |
description |
BACKGROUND AND OBJECTIVES: In this study, we investigated the anesthetic and mucosal effects of the rectal application of dexmedetomidine to rats. METHODS: Male Wistar albino rats weighing 250-300 g were divided into four groups: Group S (n = 8) was a sham group that served as a baseline for the normal basal values; Group C (n = 8) consisted of rats that received the rectal application of saline alone; Group IPDex (n = 8) included rats that received the intraperitoneal application of dexmedetomidine (100 µg kg-1); and Group RecDex (n = 8) included rats that received the rectal application of dexmedetomidine (100 µg kg-1). For the rectal drug administration, we used 22 G intravenous cannulas with the stylets removed. We administered the drugs by advancing the cannula 1 cm into the rectum, and the rectal administration volume was 1 mL for all the rats. The latency and anesthesia time (min) were measured. Two hours after rectal administration, 75 mg kg-1 ketamine was administered for intraperitoneal anesthesia in all the groups, followed by the removal of the rats' rectums to a distal distance of 3 cm via an abdominoperineal surgical procedure. We histopathologically examined and scored the rectums. RESULTS: Anesthesia was achieved in all the rats in the Group RecDex following the administration of dexmedetomidine. The onset of anesthesia in the Group RecDex was significantly later and of a shorter duration than in the Group IPDEx (p < 0.05). In the Group RecDex, the administration of dexmedetomidine induced mild-moderate losses of mucosal architecture in the colon and rectum, 2 h after rectal inoculation. CONCLUSION: Although 100 µg kg-1 dexmedetomidine administered rectally to rats achieved a significantly longer duration of anesthesia compared with the rectal administration of saline, our histopathological evaluations showed that the rectal administration of 100 µg kg-1 dexmedetomidine led to mild-moderate damage to the mucosal structure of the rectum. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-02-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-70942015000100001 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-70942015000100001 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1016/j.bjane.2013.09.005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira de Anestesiologia |
publisher.none.fl_str_mv |
Sociedade Brasileira de Anestesiologia |
dc.source.none.fl_str_mv |
Revista Brasileira de Anestesiologia v.65 n.1 2015 reponame:Revista Brasileira de Anestesiologia (Online) instname:Sociedade Brasileira de Anestesiologia (SBA) instacron:SBA |
instname_str |
Sociedade Brasileira de Anestesiologia (SBA) |
instacron_str |
SBA |
institution |
SBA |
reponame_str |
Revista Brasileira de Anestesiologia (Online) |
collection |
Revista Brasileira de Anestesiologia (Online) |
repository.name.fl_str_mv |
Revista Brasileira de Anestesiologia (Online) - Sociedade Brasileira de Anestesiologia (SBA) |
repository.mail.fl_str_mv |
||sba2000@openlink.com.br |
_version_ |
1752126628214865920 |