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Júnior JF, de França GM, da Silva Barros CC, Felix FA, da Silva WR, de Lucena HF, Oliveira CN, Galvão HC. Biomarkers involved in the proliferation of the odontogenic keratocyst, glandular odontogenic cyst and botryoid odontogenic cyst. Oral Maxillofac Surg 2022; 26:655-662. [PMID: 35059898 DOI: 10.1007/s10006-021-01026-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 12/10/2021] [Indexed: 06/14/2023]
Abstract
INTRODUCTION Odontogenic cysts are a heterogeneous group of lesions with varied clinical behavior. OBJECTIVE To analyze the expression of the epidermal growth factor receptor (EGFR), Cyclin D1, and transcription factor SOX2 in the odontogenic epithelium evaluating the cell cycle control and cystic expansion. METHODS This was a cross-sectional study including 40 cases, 20 odontogenic keratocysts (OKC), 10 botryoid odontogenic cysts (BOC), and 10 glandular odontogenic cysts (GOC). RESULTS All cases of OKC, BOC, and GOC were positive for EGFR in all layers of the cyst lining. The highest expression of nuclear Cyclin D1 was observed in the suprabasal layer of OKCs and in the basal and suprabasal layers of GOC and BOC (p < 0.001). In addition, SOX2 was only expressed in the suprabasal layer of OKCs. CONCLUSION The high expression of EGFR in the cyst membrane suggests that EGF stimulates epithelial proliferation in BOCs, and the high expression of SOX2 in OKCs may be related to the presence of stem cells in the lesion. Cyclin D1 is related to cell cycle disruption in G1-S contributing to stimulates epithelial proliferation of OKCs and GOCs and BOCs.
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Affiliation(s)
- Joaquim Felipe Júnior
- Dental Science Postgraduate Program, Federal University of Rio Grande Do Norte, Natal-RN, Brazil
| | - Glória Maria de França
- Dental Science Postgraduate Program, Federal University of Rio Grande Do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova Natal-RN, CEP, 59056-000, Brazil.
| | | | - Fernanda Aragão Felix
- Dental Science Postgraduate Program, Federal University of Rio Grande Do Norte, Natal-RN, Brazil
| | | | - Hévio Freitas de Lucena
- Dental Science Postgraduate Program, Federal University of Rio Grande Do Norte, Natal-RN, Brazil
| | - Cláudia Nunes Oliveira
- Department of Pathology, Health Sciences, Federal University of Rio Grande Do Norte, Natal-RN, Brazil
| | - Hébel Cavalcanti Galvão
- Dental Science Postgraduate Program, Federal University of Rio Grande Do Norte, Natal-RN, Brazil
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Celani LMS, Egito EST, Azevedo ÍM, Oliveira CN, Dourado D, Medeiros AC. Treatment of colitis by oral negatively charged nanostructured curcumin in rats. Acta Cir Bras 2022; 37:e370602. [PMID: 35976279 PMCID: PMC9377652 DOI: 10.1590/acb370602] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 04/08/2022] [Accepted: 05/03/2022] [Indexed: 12/05/2022] Open
Abstract
PURPOSE To examine the effects of a negatively charged nanostructured curcumin microemulsion in experimental ulcerative colitis (UC) in rats. METHODS Four percent acetic acid was used to induce UC. The animals were treated for seven days and randomly assigned to four groups: normal control (NC), colitis/normal saline (COL/NS), colitis/curcumin (COL/CUR), and colitis/mesalazine (COL/MES). The nanostructured curcumin was formulated with a negative zeta potential (-16.70 ± 1.66 mV). Dosage of the pro-inflammatory cytokines tumor necrosis factor-α (TNF-α), interleukin 1-β (IL-1β), interleukin 6 (IL-6), and antioxidant enzymes (catalase, superoxide dismutase, and glutathione peroxidase), macro and microscopic evaluation of the colon tissue were analyzed. RESULTS The COL/CUR group had a higher level of antioxidant enzymes compared to the COL/MESgroup. The levels of TNF-α, IL-1β and IL-6 were significantly lower in the colonic tissue of the COL/CUR group rats, when compared to the COL/NS and COL/MES groups (p < 0.001). The presence of ulcers in the colonic mucosa in rats of the COL/NSgroup was significantly higher than in the COL/MES group (p < 0.001). In the NC and COL/CUR groups, there were no ulcers in the colonic mucosa. CONCLUSIONS The nanostructured microemulsion of curcumin, used orally, positively influenced the results of the treatment of UC in rats. The data also suggests that nanostructured curcumin with negative zeta potential is a promising phytopharmaceutical oral delivery system for UC therapy. Further research needs to be done to better understand the mechanisms of the negatively charged nanostructured curcumin microemulsion in UC therapy.
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Affiliation(s)
- Lívia Medeiros Soares Celani
- Fellow master degree. Universidade Federal do Rio Grande do Norte – Postgraduate Program in Health Sciences – Natal (RN), Brazil
| | - Eryvaldo Sócrates Tabosa Egito
- PhD, full professor, chairman. Universidade Federal do Rio Grande do Norte – Laboratory of Dispersed Systems – Natal (RN), Brazil
| | | | - Cláudia Nunes Oliveira
- PhD. Universidade Federal do Rio Grande do Norte – Pathology Department – Health Sciences – Natal (RN), Brazil
| | - Douglas Dourado
- Fellow PhD degree. Universidade Federal do Rio Grande do Norte – Postgraduate Program in Health Sciences – Natal (RN), Brazil
| | - Aldo Cunha Medeiros
- PhD, full professor, chairman. Universidade Federal do Rio Grande do Norte – Nucleus of Experimental Surgery – Natal (RN), Brazil
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Pereira JR, da Fonseca AG, de Sena Fernandes LL, Furtado AA, da Silva VC, da Veiga Júnior VF, Sant'Ana AEG, Oliveira CN, Guerra GCB, de Freitas Fernandes-Pedrosa M, Gavioli EC, Oliveira-Costa JF, Soares MBP, de Lima ÁAN, de Melo Silva D, Moura Lemos TMA. Toxicological and pharmacological effects of pentacyclic triterpenes rich fraction obtained from the leaves of Mansoa hirsuta. Biomed Pharmacother 2021; 145:112478. [PMID: 34872801 DOI: 10.1016/j.biopha.2021.112478] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 11/17/2021] [Accepted: 11/29/2021] [Indexed: 11/27/2022] Open
Abstract
Mansoa hirsuta is a medicinal plant native to the Brazilian semi-arid region. This approach aimed to investigate the in vitro and in vivo toxicity and anti-inflammatory and analgesic actions of the M. hirsuta fraction (MHF). In vitro cell viability was assessed in 3T3 cells. In vivo, the acute toxicity test, a single dose of the MHF was administered. For the subchronic toxicity test, three doses of were administered for 30 days. Locomotion and motor coordination were assessed using open field and rota-rod. The anti-inflammatory activity was evaluated in carrageenan-induced paw edema and zymosan-induced air-pouch models. Myeloperoxidase (MPO) and total proteins were also measured. The antinociceptive activity MHF was determined using acid acetic-induced abdominal writhing and formalin models. In the cytotoxicity assay, MHF showed no significative impairment of cell viability and in the acute toxicity study, did not cause mortality or signs of toxicity. Repeated exposure to MHF did not cause relevant toxicological changes. The evaluation in the open field test showed that the MHF did not alter the locomotor activity and there was no change in motor coordination and balance of animals. MHF significantly reduced edema, MPO production, the migration of leukocytes and protein leakage. In addition, MHF reduced abdominal writhing and significantly inhibited the first and second stage of the formalin test. The results of this study indicated that MHF has an anti-inflammatory and analgesic potential without causing acute or subchronic toxic effects and it can be a promising natural source to be explored.
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Affiliation(s)
- Joquebede Rodrigues Pereira
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Aldilane Gonçalves da Fonseca
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Luzia Leiros de Sena Fernandes
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Allanny Alves Furtado
- Department of Pharmacy, Laboratório Escola de Farmácia Industrial, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Valéria Costa da Silva
- Department of Biophysics and Pharmacology, Centro de Biociências, Federal University of Rio Grande do Norte, Natal, RN 59078-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Valdir Florêncio da Veiga Júnior
- Chemical Engineering Department, Military Institute of Engineering, Rio de Janeiro, RJ 22290-270, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Antônio Euzébio Goulart Sant'Ana
- Institute of Chemistry and Biotechnology, Federal University of Alagoas, Campus A.C. Simões, Maceió, AL 57072-970, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Cláudia Nunes Oliveira
- Department of Pathology, Federal University of Rio Grande do Norte, Natal, RN 59012570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Gerlane Coelho Bernardo Guerra
- Department of Biophysics and Pharmacology, Centro de Biociências, Federal University of Rio Grande do Norte, Natal, RN 59078-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Matheus de Freitas Fernandes-Pedrosa
- Department of Pharmacy, Laboratório Escola de Farmácia Industrial, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Elaine Cristina Gavioli
- Department of Biophysics and Pharmacology, Centro de Biociências, Federal University of Rio Grande do Norte, Natal, RN 59078-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil
| | - José Fernando Oliveira-Costa
- State Health Secretary, Pharmaceutical Assistance Directory, Salvador, Bahia 41233-015, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Milena Botelho Pereira Soares
- State Health Secretary, Pharmaceutical Assistance Directory, Salvador, Bahia 41233-015, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Ádley Antonini Neves de Lima
- Department of Pharmacy, Laboratório Escola de Farmácia Industrial, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Daniel de Melo Silva
- Gonçalo Moniz Center, Oswaldo Cruz Foundation (FIOCRUZ), Salvador, Bahia 40296-710, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
| | - Telma Maria Araújo Moura Lemos
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Federal University of Rio Grande do Norte, Natal, RN 59012-570, Brazil; Department of Chemistry and Exact, State University of Southwest of Bahia, Jequié, BA 45208-091, Brazil.
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Campos IHMP, Oliveira CN, Araújo-Neto JV, Brito SV, Guarnieri MC, Ribeiro SC. Helminth fauna of Norops fuscoauratus (D'Orbigny, 1837) (Squamata: Dactyloidae) in the Atlantic Forest, northeastern Brazil. BRAZ J BIOL 2021; 82:e241819. [PMID: 34161426 DOI: 10.1590/1519-6984.241819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 12/02/2020] [Indexed: 11/22/2022] Open
Abstract
The composition of macro endoparasites associated with the lizard Norops fuscoauratus (Squamata) was analysed in two localities in the Atlantic Forest on the northeast of Brazil between December 2012 and July 2015. 74 specimens of N. fuscoauratus were examined and five species of helminths were reported, being: (a) for the population of Pernambuco: Cystacanth (Prevalence=37.5%), Physaloptera retusa Rudolphi, 1819 (Prevalence=4.16%), larva of flatworm (Prevalence=2.08%), Rhabdias sp. (Prevalence=2.08%) and Strongyluris oscari Travassos, 1923 (Prevalence=2.08%), and (b) of Alagoas: S. oscari (Prevalence=17.85%) and Rhabdias sp. (Prevalence=3.57%). The differences in the composition of endoparasites in the two populations are attributed to individualities of environments occupied by the lizards. The collection period does not influence the abundance of parasites, but when associated with sex, there was a positive correlation with the abundance of helminths, with more females than males being infected with parasites in the rainy season.
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Affiliation(s)
- I H M P Campos
- Departamento de Zoologia, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brasil
| | - C N Oliveira
- Departamento de Zoologia, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brasil
| | - J V Araújo-Neto
- Departamento de Zoologia, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brasil.,Setor de Zoologia, Museu de História Natural, Universidade Federal de Alagoas - UFAL, Maceió, AL, Brasil
| | - S V Brito
- Centro de Ciências Agrárias e Ambientais, Universidade Federal do Maranhão - UFMA, Chapadinha, MA, Brasil
| | - M C Guarnieri
- Departamento de Zoologia, Universidade Federal de Pernambuco - UFPE, Recife, PE, Brasil
| | - S C Ribeiro
- Laboratório de Biologia e Ecologia de Animais Silvestres - LABEAS, Instituto de Formação de Educadores, Universidade Federal do Cariri - UFCA, Brejo Santo, CE, Brasil
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Azevedo ÍM, Macedo Filho R, Rocha KBF, Oliveira CN, Medeiros AC. Diagnostic accuracy of 18F-FDG-PET in abdominal sepsis in rats. Acta Cir Bras 2020; 35:e202000505. [PMID: 32578672 PMCID: PMC7310585 DOI: 10.1590/s0102-865020200050000005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 04/09/2020] [Indexed: 12/02/2022] Open
Abstract
Purpose The objective of this study was to investigate the accuracy of 18F-FDG-PET in the diagnosis of multibacterial abdominal sepsis by cecum ligation and puncture (CLP) in rats. Methods Adult Wistar rats ( Rattus norvegicus ), weighing 227±35g, were allocated into a sepsis group by CLP (n=10) and sham group (n=10). 18F-FDG-PET using microPET was performed on all rats after 24 hours. Results All animals survived for postoperative 24h. The abdomen/liver ratio of the standardized uptake value (SUV) percentage was significantly higher in the sepsis group than in the sham (p=0.004). The ROC curve showed an accuracy of 18F-FDG-PET to detect abdominal sepsis of 88.9% (p=0.001), sensitivity of 90% and specificity of 88.9%. When a cut-off point of 79% of the ratio between the SUV on the abdominal region and liver was established, the sensitivity was 90%, specificity of 88.9%; positive and negative predictive values of 90.0% and 88.9%, respectively. Conclusions The diagnostic accuracy of 18F-FDG-PET in rats with abdominal sepsis was significantly high. It was also demonstrated the predictive ability of the abdomen/liver SUV ratio to diagnose abdominal sepsis. These findings may have implications for the clinical setting, locating septic foci with PETscan.
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Oliveira CN, Azevedo ÍM, Rocha KBF, Egito EST, Medeiros AC. Effect of the Ileum and Colon on Liver Regeneration. J INVEST SURG 2020; 34:711-715. [PMID: 32028809 DOI: 10.1080/08941939.2019.1687793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
PURPOSE The colon and ileum play significant roles on liver physiology. Studies about simultaneous hepatectomy and colectomy or enterectomy are scarce and controversial. We investigated and compared the effects of ileum and colon resection on liver regeneration. MATERIALS AND METHODS Twenty four Wistar rats were allocated in group I-(sham), group II-70% hepatectomy; group III-70% hepatectomy + ileal resection, and group IV-70% hepatectomy + partial colectomy. On the sixth day, serum hepatic enzymes, albumin, hepatocyte growth-factor (HGF) and transforming growth factor-alpha (TGF-α) were measured. The hepatic regeneration rate was estimated. Ki-67 immunohistochemical analysis was done in remnant liver. RESULTS Hepatic enzymes levels were significantly higher in group III rats comparing to the other groups (p < 0.001). In group IV, the levels were significantly lower than in groups II and III (p < 0.001). Albuminemia was significantly lower in group III rats comparing with the other groups (p < 0.001). Albuminemia was not different comparing groups I and IV (p > 0.05). Cytokines HGF and TGF-α levels in group IV were significantly higher than in the other groups (p < 0.001). Liver regeneration rate was higher group IV than in groups II and III, and the difference was statistically significant (p = 0.002). The hepatocytes expression of Ki-67 was significantly higher in the remnant liver of group IV than in group III (p = 0.002). There was no difference in Ki-67 expression between groups II and IV (p > 0.05). CONCLUSION Ileum and colon resection have different effects on liver regeneration. Colon resection positively influences liver regeneration, while ileum resection negatively influences the regenerative process, in a rat model.
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Affiliation(s)
- Cláudia Nunes Oliveira
- Graduate Program in Health Sciences, College of Medicine, Federal University of Rio Grande Do Norte, Natal, Brazil
| | - Ítalo Medeiros Azevedo
- Graduate Program in Health Sciences, College of Medicine, Federal University of Rio Grande Do Norte, Natal, Brazil
| | - Keyla Borges Ferreira Rocha
- Graduate Program in Health Sciences, College of Medicine, Federal University of Rio Grande Do Norte, Natal, Brazil
| | | | - Aldo Cunha Medeiros
- Graduate Program in Health Sciences, College of Medicine, Federal University of Rio Grande Do Norte, Natal, Brazil
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Rocha KBF, Oliveira CN, Azevedo ÍM, Macedo RD, Medeiros AC. Effect of Arrabidaea chica extract against chemically induced breast cancer in animal model. Acta Cir Bras 2019; 34:e201901001. [PMID: 31826147 PMCID: PMC6907885 DOI: 10.1590/s0102-865020190100000001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 09/17/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose: To examine the effects of Arrabidaa chica
(Bignoniacea) extract, a native plant of the Amazon
known as crajiru, on a 7,12-dimethyl-1,2-benzanthracene (DMBA)-induced
breast cancer model in Wistar rats. Methods: We compared the response of breast cancer to the oral administration of
A. chica extract (ACE) for 16 weeks, associated or not
with vincristine. Groups: normal control; DMBA (50mg/kg v.o,) without
treatment; DMBA+ACE (300 mg/kg); DMBA+vincristine. 500μg/kg injected i.p;
DMBA+ACE+Vincristine 250μg/kg i.p. Imaging by microPET and fluorescence,
biochemistry, oxidative stress, hematology and histopathology were used to
validate the treatments. Results: All animals survived. A gradual weight gain in all groups was observed, with
no significant difference (p>0.05). The oral administration of ACE and
ACE+vincristine 50% significantly reduced breast tumors incidence examined
with PET-18FDG and fluorescence (p<0.001). Significant reduction of serum
transaminases, oxidative stress and hematological toxicity were observed in
these groups. Antioxidant enzyme levels in breast tissue were significantly
higher compared to the DMBA and DMBA+vincristine groups. Conclusion: These results demonstrate for the first time that ACE positively influences
the treatment of DMBA-induced breast cancer in animal model, inducing a
reduction in oxidative stress and chemotherapy toxicity, meaning that ACE
may have clinical implication in further studies.
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Affiliation(s)
- Keyla Borges Ferreira Rocha
- Fellow PhD degree, Postgraduate Program in Health Sciences, Universidade Federal do Rio Grande do Norte (UFRN), Natal-RN, Brazil. Technical procedures, acquisition of data, statistics analysis, critical revision
| | - Cláudia Nunes Oliveira
- Fellow PhD degree, Postgraduate Program in Health Sciences, Universidade Federal do Rio Grande do Norte (UFRN), Natal-RN, Brazil. Technical procedures, acquisition of data, statistics analysis, critical revision
| | - Ítalo Medeiros Azevedo
- Fellow PhD degree, Postgraduate Program in Health Sciences, Universidade Federal do Rio Grande do Norte (UFRN), Natal-RN, Brazil. Technical procedures, acquisition of data, statistics analysis, critical revision
| | - Robson de Macedo
- Fellow PhD degree, Postgraduate Program in Health Sciences, Universidade Federal do Rio Grande do Norte (UFRN), Natal-RN, Brazil. Technical procedures, acquisition of data, statistics analysis, critical revision
| | - Aldo Cunha Medeiros
- PhD, Full Professor, Nucleus of Experimental Surgery, UFRN, Natal-RN, Brazil. Conception, design, intellectual and scientific content of the study, critical revision, final approval
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Moreira MC, Azevedo ÍM, Oliveira CN, Medeiros ADC. Influence of the colon in liver regeneration of rats submitted to hepatectomy and colectomy. ACTA ACUST UNITED AC 2017; 44:476-481. [PMID: 29019577 DOI: 10.1590/0100-69912017005009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 06/01/2017] [Indexed: 11/22/2022]
Abstract
OBJECTIVE to evaluate whether colectomy, associated with 70% hepatectomy, influences liver regeneration in rats. METHODS we distributed 18 Wistar rats in three groups of six animals each. In group I (sham), we performed laparotomy; In group II, colectomy + 70% hepatectomy; In group III, only 70% hepatectomy. On the 6th postoperative day, we collected blood by cardiac puncture under anesthesia, followed by euthanasia. We performed serum dosages of aspartate aminotransferase (AST), alanine aminotransferase (ALT), albumin and alkaline phosphatase (AF), hepatocyte growth factor (HGF) and transforming growth factor-α (TGF-α). We calculated liver regeneration by the formula: liver weight ratio per 100g body weight at the time of euthanasia / liver weight preoperatively projected for 100g body weight × 100. RESULTS ALT and AST levels were significantly lower in group II when compared with group III (p<0.001). Albuminemia showed significantly higher levels in group II. Levels of HGF and TGF-α in group II were significantly higher than in group III. The percentage of hepatic regeneration was significantly higher in group II than in group III. CONCLUSION Colectomy performed simultaneously with 70% hepatectomy had a positive influence on liver regeneration in rats. Further research is needed to reveal the molecular mechanisms of this effect and to characterize the colon influence in liver physiology.
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Affiliation(s)
- Marília Carvalho Moreira
- - Federal University of Rio Grande do Norte, Post-graduation Program in Health Sciences, Natal, RN, Brazil
| | - Ítalo Medeiros Azevedo
- - Federal University of Rio Grande do Norte, Post-graduation Program in Health Sciences, Natal, RN, Brazil
| | - Cláudia Nunes Oliveira
- - Federal University of Rio Grande do Norte, Post-graduation Program in Health Sciences, Natal, RN, Brazil
| | - Aldo da Cunha Medeiros
- - Federal University of Rio Grande do Norte, Post-graduation Program in Health Sciences, Natal, RN, Brazil
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Medeiros VDFLP, Azevedo ÍM, Carvalho MDF, Oliveira CN, Egito ESTD, Medeiros AC. The renoprotective effect of oral Tadalafil pretreatment on ischemia/reperfusion injury in rats. Acta Cir Bras 2017; 32:90-97. [DOI: 10.1590/s0102-865020170201] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 01/20/2017] [Indexed: 01/08/2023] Open
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Medeiros AC, Brígido ARD, Silva SM, Brito VR, Rocha KBF, Oliveira CN. The ileum as a determinant organ of the functional liver cell mass in rats. Acta Cir Bras 2013; 28:210-5. [DOI: 10.1590/s0102-86502013000300009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2012] [Accepted: 01/24/2013] [Indexed: 11/21/2022] Open
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