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Zeng X, Wang H, Deng Y, Deng Z, Bi W, Fu H. Causal relationship between obesity and anorectal abscess: a Mendelian randomization study. Front Med (Lausanne) 2024; 11:1437849. [PMID: 38975051 PMCID: PMC11225408 DOI: 10.3389/fmed.2024.1437849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Accepted: 06/13/2024] [Indexed: 07/09/2024] Open
Abstract
Background Observational studies have indicated that obesity is a risk factor for anorectal abscess (ARB). However, it remains unclear whether a causal genetic relationship exists between obesity and ARB. Methods Univariate and multivariate Mendelian randomization (MR) were conducted using data from a large, published genome-wide association study (GWAS) of European ancestry to infer a causal relationship between obesity and ARB. Inverse variance weighted (IVW) analysis served as the primary analysis method, with results reported as odds ratios (OR). Results MR analysis revealed that body mass index (BMI) positively affects ARB (OR 1.974, 95% confidence interval (CI) 1.548-2.519, p = 4.34 × 10-8). The weighted median method (OR = 1.879, 95% CI 1.248-2.829, p = 0.002) and Bayesian model averaging (BMA) (OR = 1.88, 95% CI 1.477-2.392, p = 2.85 × 10-7) also demonstrated consistent results. Subsequently, the impact of several obesity-related characteristics on ARB was assessed. Body fat percentage (BF), whole body fat mass (FM), waist circumference (WC), and hip circumference (HC) were found to be causally associated with an increased risk of ARB. However, these associations vanished after adjusting for BMI effects. Conclusion The study confirms a positive causal effect of obesity on ARB, highlighting that reasonable weight control is an important strategy to reduce the incidence of ARB.
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Affiliation(s)
- XiaoYu Zeng
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - HanYu Wang
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yang Deng
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - ZhiYu Deng
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Bi
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hao Fu
- Clinical Medical College, Chengdu University of Traditional Chinese Medicine, Chengdu, China
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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Chakarov D, Hadzhieva E, Kalchev Y, Hadzhiev D. Aerobic Microbiological Spectrum and Antibiotic Resistance in Children Operated for Anorectal Abscesses. J Clin Med 2024; 13:2414. [PMID: 38673687 PMCID: PMC11051477 DOI: 10.3390/jcm13082414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/17/2024] [Accepted: 04/19/2024] [Indexed: 04/28/2024] Open
Abstract
(1) Background: Anorectal abscesses are a relatively rare pathology in childhood. Most often, male children under 1 year of age are affected. The importance of microbiological examination for the diagnosis and treatment of such patients remains debatable among surgeons, resulting in scarce data being available in the literature. We aimed to identify the aerobic microbiological spectrum and antibiotic resistance of isolates in children undergoing operation to treat anorectal abscesses. (2) Methods: We performed a case series of 102 children diagnosed and operated for anorectal abscesses over a period of 10 years (2010-2019). Purulent wound exudate was used for microbiological evaluation, which was subsequently cultured on 5% sheep-blood agar and eosin-methylene blue agar. For microbiological identification, conventional biochemical tests and semi-automated (API 20, bioMerieux, Marcy-l'Étoile, France) tests were used, as well as automated systems (Vitek-2 Compact, bioMerieux, France). Antimicrobial susceptibility testing was performed by the disk diffusion method of Bauer-Kirby and by determining the minimal inhibitory concentrations for glycopeptides. The results were interpreted according to the EUCAST standard for the corresponding year. (3) Results: Microbiological testing in children operated for anorectal abscesses mainly identified the gut commensals that normally reside in the rectal mucosa. Monocultures were found in just over half of the cases. Escherichia coli, Klebsiella pneumoniae complex, and Proteus mirabilis were the most frequently isolated. In addition, Staphylococcus aureus was found in 7% of patients. In Gram-negative bacteria, antibiotic resistance was most often observed in penicillins, cephalosporins, sulfonamides, and fluoroquinolones. (4) Conclusions: The increasing rates of antimicrobial resistance impose the need for the local monitoring of circulating commensal bacteria associated with anorectal abscesses in children to guide antibiotic therapy when indicated.
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Affiliation(s)
- Dzhevdet Chakarov
- Section of General Surgery, Department of Propedeutics of Surgical Diseases, Faculty of Medicine, Medical University of Plovdiv, 4001 Plovdiv, Bulgaria; (D.C.); (D.H.)
- First Clinic of Surgery, University Hospital St. George, 4001 Plovdiv, Bulgaria
| | - Elena Hadzhieva
- Section of General Surgery, Department of Propedeutics of Surgical Diseases, Faculty of Medicine, Medical University of Plovdiv, 4001 Plovdiv, Bulgaria; (D.C.); (D.H.)
- First Clinic of Surgery, University Hospital St. George, 4001 Plovdiv, Bulgaria
| | - Yordan Kalchev
- Department of Medical Microbiology and Immunology “Prof. Dr. Elissay Yanev”, Faculty of Medicine, Medical University of Plovdiv, 4002 Plovdiv, Bulgaria;
- Laboratory of Microbiology, University Hospital St. George, 4002 Plovdiv, Bulgaria
| | - Dimitar Hadzhiev
- Section of General Surgery, Department of Propedeutics of Surgical Diseases, Faculty of Medicine, Medical University of Plovdiv, 4001 Plovdiv, Bulgaria; (D.C.); (D.H.)
- First Clinic of Surgery, University Hospital St. George, 4001 Plovdiv, Bulgaria
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3
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Hong JC, Chen JS, Jiang ZJ, Chen ZC, Ruan N, Yao XP. Microbiota in adult perianal abscess revealed by metagenomic next-generation sequencing. Microbiol Spectr 2024; 12:e0347423. [PMID: 38385739 PMCID: PMC10986498 DOI: 10.1128/spectrum.03474-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 01/12/2024] [Indexed: 02/23/2024] Open
Abstract
The microbiota of perianal abscesses is scarcely investigated. Identifying causative bacteria is essential to develop antibiotic therapy. However, culture-based methods and molecular diagnostics through 16S PCR technology are often hampered by the polymicrobial nature of perianal abscesses. We sought to characterize the microbiota composition of perianal abscesses via metagenomic next-generation sequencing (mNGS). Fourteen patients suffering from perianal abscesses between March 2023 and August 2023 underwent retrospective assessment. Information from medical records was used, including clinical information, laboratory data, and culture and mNGS results. Forty bacterial taxa were identified from perianal abscesses through mNGS, with Bilophila wadsworthia (71.4%), Bacteroides fragilis (57.1%), and Escherichia coli (50.0%) representing the most prevalent species. mNGS identified an increased number of bacterial taxa, with an average of 6.1 compared to a traditional culture-based method which only detected an average of 1.1 in culture-positive perianal abscess patients, predominantly E. coli (75.0%), revealing the polymicrobial nature of perianal abscesses. Our study demonstrates that a more diverse bacterial profile is detected by mNGS in perianal abscesses, and that Bilophila wadsworthia is the most prevalent microorganism, potentially serving as a potential biomarker for perianal abscess.IMPORTANCEAccurately, identifying the bacteria causing perianal abscesses is crucial for effective antibiotic therapy. However, traditional culture-based methods and 16S PCR technology often struggle with the polymicrobial nature of these abscesses. This study employed metagenomic next-generation sequencing (mNGS) to comprehensively analyze the microbiota composition. Results revealed 40 bacterial taxa, with Bilophila wadsworthia (71.4%), Bacteroides fragilis (57.1%), and Escherichia coli (50.0%) being the most prevalent species. Compared to the culture-based approach, mNGS detected a significantly higher number of bacterial taxa (average 6.1 vs 1.1), highlighting the complex nature of perianal abscesses. Notably, Bilophila wadsworthia emerged as a potential biomarker for these abscesses. This research emphasizes the importance of mNGS in understanding perianal abscesses and suggests its potential for improving diagnostic accuracy and guiding targeted antibiotic therapy in the future.
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Affiliation(s)
- Jian-Chen Hong
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Anorectal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Jian-Sheng Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Zai-Jie Jiang
- Department of Neurology, Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
| | - Zhi-Chuan Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Ning Ruan
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Anorectal Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Xiang-Ping Yao
- Department of Neurology, Institute of Neurology of First Affiliated Hospital, Institute of Neuroscience, Fujian Key Laboratory of Molecular Neurology, Fujian Medical University, Fuzhou, China
- Department of Neurology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
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Skovgaards DM, Perregaard H, Dibbern CB, Nordholm-Carstensen A. Fistula development after anal abscess drainage-a multicentre retrospective cohort study. Int J Colorectal Dis 2023; 39:4. [PMID: 38093036 PMCID: PMC10719138 DOI: 10.1007/s00384-023-04576-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/29/2023] [Indexed: 12/17/2023]
Abstract
PURPOSE Anal abscesses are common and, despite correct treatment with surgical drainage, carry the risk of developing fistulas. Studies identifying risk factors for the development of anal fistulas are sparse. This study aimed to identify the risk factors for anal fistulas after anal abscess surgery. METHODS This was a multicentre, retrospective cohort study of patients undergoing acute surgery for anal abscesses in the Capital Region of Denmark between 2018 and 2019. The patients were identified using ICD-10 codes for anal abscesses. Predefined clinicopathological factors and postoperative courses were extracted from patient records. RESULTS A total of 475 patients were included. At a median follow-up time of 1108 days (IQR 946-1320 days) following surgery, 164 (33.7%) patients were diagnosed with an anal fistula. Risk factors for developing fistulas were low intersphincteric (OR 2.77, 95CI 1.50-5.06) and ischioanal (OR 2.48, 95CI 1.36-4.47) abscesses, Crohn's disease (OR 5.96, 95CI 2.33-17.2), a history of recurrent anal abscesses (OR 4.14, 95CI 2.47-7.01) or repeat surgery (OR 5.96, 95CI 2.33-17.2), E. coli-positive pus cultures (OR 4.06, 1.56-11.4) or preoperative C-reactive protein (CRP) of more than 100 mg/L (OR 3.21, 95CI 1.57-6.71). CONCLUSION Several significant clinical risk factors were associated with fistula development following anal abscess surgery. These findings are clinically relevant and could influence the selection of patients for specialised follow-up, facilitate expedited diagnosis, and potentially prevent unnecessarily long treatment courses.
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Affiliation(s)
- Daniel Mark Skovgaards
- Digestive Disease Center, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark.
| | - Helene Perregaard
- Surgical Department, Nordsjællands Hospital, University of Copenhagen, Hillerød, Denmark
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Reichert M, Eckerth L, Fritzenwanker M, Imirzalioglu C, Amati AL, Askevold I, Padberg W, Hecker A, Liese J, Bender F. New Perianal Sepsis Risk Score Predicts Outcome of Elderly Patients with Perianal Abscesses. J Clin Med 2023; 12:5219. [PMID: 37629259 PMCID: PMC10455731 DOI: 10.3390/jcm12165219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/29/2023] [Accepted: 08/07/2023] [Indexed: 08/27/2023] Open
Abstract
Antibiotic therapy following surgical perianal abscess drainage is debated, but may be necessary for high-risk patients. Frailty has been shown to increase the risk of unfavorable outcomes in elderly surgical patients. This study aims to identify high-risk patients by retrospectively analyzing a single-center cohort and using a pretherapeutic score to predict the need for postoperative antibiotics and extended nursing care following perianal abscess drainage surgery. The perianal sepsis risk score was developed through univariable and multivariable analysis. Internal validation was assessed using the area under receiver-operating characteristic curve. Elderly, especially frail patients exhibited more severe perianal disease, higher frequency of antibiotic therapy, longer hospitalization, poorer clinical outcomes. Multivariable analysis revealed that scores in the 5-item modified frailty index, severity of local infection, and preoperative laboratory markers of infection independently predicted the need for prolonged hospitalization and anti-infective therapy after abscess drainage surgery. These factors were combined into the perianal sepsis risk score, which demonstrated better predictive accuracy for prolonged hospitalization and antibiotic therapy compared with chronological age or frailty status alone. Geriatric assessments are becoming increasingly important in clinical practice. The perianal sepsis risk score identifies high-risk patients before surgery, enabling early initiation of antibiotic therapy and allocation of additional nursing resources.
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Affiliation(s)
- Martin Reichert
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
- German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany; (M.F.); (C.I.)
| | - Lukas Eckerth
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
| | - Moritz Fritzenwanker
- German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany; (M.F.); (C.I.)
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany
| | - Can Imirzalioglu
- German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany; (M.F.); (C.I.)
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany
| | - Anca-Laura Amati
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
- German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany; (M.F.); (C.I.)
| | - Ingolf Askevold
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
| | - Winfried Padberg
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
| | - Andreas Hecker
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
- German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392 Giessen, Germany; (M.F.); (C.I.)
| | - Juliane Liese
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
| | - Fabienne Bender
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390 Giessen, Germany; (L.E.); (A.-L.A.); (I.A.); (W.P.); (A.H.); (J.L.); (F.B.)
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Balan N, Liu JK, Braschi C, Lee H, Petrie BA. Sex-based analysis of characteristics contributing to anorectal abscesses requiring acute care surgery. SURGERY IN PRACTICE AND SCIENCE 2023. [DOI: 10.1016/j.sipas.2023.100156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
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7
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Bender F, Eckerth L, Fritzenwanker M, Liese J, Askevold I, Imirzalioglu C, Padberg W, Hecker A, Reichert M. Drug resistant bacteria in perianal abscesses are frequent and relevant. Sci Rep 2022; 12:14866. [PMID: 36050427 PMCID: PMC9436980 DOI: 10.1038/s41598-022-19123-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 08/24/2022] [Indexed: 11/29/2022] Open
Abstract
Perianal abscesses are frequent diseases in general surgery. Principles of standard patient care are surgical drainage with exploration and concomitant treatment of fistula. Antiinfective therapy is frequently applied in cases of severe local disease and perianal sepsis. However, the role of microbiologic testing of purulence from perianal abscesses is disputed and the knowledge concerning bacteriology and bacterial resistances is very limited. A retrospective cohort study was performed of consecutive patients (≥ 12 years of age) from a tertiary care hospital, who underwent surgical treatment for perianal abscess from 01/2008 to 12/2019. Subdividing the cohort into three groups regarding microbiological testing results: no microbiological testing of purulence (No_Swab, n = 456), no detection of drug resistant bacteria [DR(−), n = 141] or detection of bacteria with acquired drug resistances from purulence [DR(+), n = 220]. Group comparisons were performed using Kruskall–Wallis test and, if applicable, followed by Dunn´s multiple comparisons test for continuous variables or Fishers exact or Pearson’s X2 test for categorical data. Fistula persistence was estimated by Kaplan Meier and compared between the groups using Log rank test. Corralation analysis between perioperative outcome parameters and bacteriology was performed using Spearman´s rho rank correlation. Higher pretherapeutic C-reactive protein (p < 0.0001) and white blood cell count (p < 0.0001), higher rates of supralevatoric or pararectal abscesses (p = 0.0062) and of complicated fistula-in-ano requiring drainage procedure during index surgery (p < 0.0001) reflect more severe diseases in DR(+) patients. The necessity of antibiotic therapy (p < 0.0001), change of antibiotic regimen upon microbiologic testing results (p = 0.0001) and the rate of re-debridements during short-term follow-up (p = 0.0001) were the highest, the duration until definitive fistula repair was the longest in DR(+) patients (p = 0.0061). Escherichia coli, Bacteroides, Streptococcus and Staphylococcus species with acquired drug resistances were detected frequently. High rates of resistances against everyday antibiotics, including perioperative antibiotic prophylaxis were alarming. In conclusion, the knowledge about individual bacteriology is relevant in cases of complex and severe local disease, including locally advanced infection with extended soft tissue affection and perianal sepsis, signs of systemic inflammatory response as well as the need of re-do surgery for local debridements during short-term and fistula repair during long-term follow-up. Higher rates of acquired antibiotic resistances are to be expected in patients with more severe diseases.
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Affiliation(s)
- Fabienne Bender
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Lukas Eckerth
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Moritz Fritzenwanker
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392, Giessen, Germany.,German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392, Giessen, Germany
| | - Juliane Liese
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Ingolf Askevold
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Can Imirzalioglu
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392, Giessen, Germany.,German Center for Infection Research (DZIF), Site Giessen-Marburg-Langen, Justus-Liebig-University of Giessen, Schubertstrasse 81, 35392, Giessen, Germany
| | - Winfried Padberg
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Andreas Hecker
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany
| | - Martin Reichert
- Department of General, Visceral, Thoracic, Transplant and Pediatric Surgery, University Hospital of Giessen, Rudolf-Buchheim Strasse 7, 35390, Giessen, Germany.
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Santos CHMD, Cavasana AL, Moreira DDL, Dourado DM, Guimarães FDS, Barros FHR, Campos GCOD, Leme GAL, Silva LDMD, Wahl LM, Gutterres NBDA, Matias R, Câmara SJF, Santos SEDO. Treatment of anal fistula with Baccharis dracunculifolia extract. Experimental study in rats. ACTA ACUST UNITED AC 2020; 46:e20192297. [PMID: 31967191 DOI: 10.1590/0100-6991e-20192297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 08/10/2019] [Indexed: 11/21/2022]
Abstract
OBJECTIVE to evaluate the efficacy of Baccharis dracunculifolia extract in the treatment of anal fistulas in rats. METHODS twenty male Wistar rats were submitted to anal fistula and, after 30 days, were divided into three groups: Control Group, with five animals; Carbopol Group, with five animals; and Baccharis dracunculifolia Group, with ten animals. In the Control Group, no treatment was performed. In the Carbopol Group, a daily infusion of Carbopol was performed for 30 days. In the Baccharis dracunculifolia Group, a daily infusion of Carbopol plus Baccharis dracunculifolia extract was performed for 30 days. Specimens were taken for histological analysis after euthanasia. RESULTS there was no complete closure of the fistulous tract in any of the animals. The mean area of the remaining tract was of 847.2µm2, 565.6µm2 and 372.7µm2, in the Control Group, Carbopol Group, and Baccharis dracunculifolia Group, respectively, (p=0.001). The mean of the inflammatory process score was of 2.4, 2.4, and 2.1, in the Control Group, Carbopol Group, and Baccharis dracunculifolia Group, respectively, (p=0.285), while the mean values of vascular congestion were of 1.6, 1.4, and 1.1, in the Control Group, Carbopol Group, and Baccharis dracunculifolia Group, respectively, (p=0.031). CONCLUSION Baccharis dracunculifolia extract was able to reduce the lumen of the fistulous tracts and the degree of vascular congestion, without, however, reducing the local inflammatory process or totally closing the fistulous tracts.
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Affiliation(s)
- Carlos Henrique Marques Dos Santos
- Universidade Anhanguera (Uniderp), Curso de Medicina, Campo Grande, MS, Brasil.,Universidade Federal de Mato Grosso do Sul, Faculdade de Medicina, Campo Grande, MS, Brasil
| | | | - Davyson de Lima Moreira
- Fundação Oswaldo Cruz, Instituto de Tecnologia em Fármacos, Departamento de Produtos Naturais, Rio de Janeiro, RJ, Brasil
| | | | | | | | | | | | | | - Lucas Marques Wahl
- Universidade Anhanguera (Uniderp), Curso de Medicina, Campo Grande, MS, Brasil
| | | | - Rosemary Matias
- Universidade Anhanguera (Uniderp), Curso de Medicina, Campo Grande, MS, Brasil
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