Displaying publications 21 - 40 of 40 in total

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  1. Guzmán Rojas RA, Kamisan Atan I, Shek KL, Dietz HP
    Ultrasound Obstet Gynecol, 2015 Sep;46(3):363-6.
    PMID: 25766889 DOI: 10.1002/uog.14845
    To determine the prevalence of evidence of residual obstetric anal sphincter injury, to evaluate its association with anal incontinence (AI) and to establish minimal diagnostic criteria for significant (residual) external anal sphincter (EAS) trauma.
    Matched MeSH terms: Anal Canal/injuries*; Anal Canal/ultrasonography
  2. Tan WS, Md Hasan Z, Sanmugam A, Singaravel S, Abdullah MY, Nah SA
    J Pediatr Surg, 2023 Feb;58(2):241-245.
    PMID: 36384936 DOI: 10.1016/j.jpedsurg.2022.10.031
    INTRODUCTION: Anorectal manometry may be useful to objectively evaluate anorectal function following definitive pullthrough for Hirschsprung Disease (HD) but there is little published data. Our study aims to investigate anorectal manometry findings and their association with bowel function.

    METHODOLOGY: This was a prospective observational study. Convenience sampling method was used to recruit all HD patients who had definitive pullthrough from January 2019 to December2020 in our institution. High-resolution anorectal manometry (HRAM) was used to record anal resting pressure (ARP), length of high-pressure zone (HPZ), and presence/absence of recto-anal inhibitory reflex (RAIR). The Paediatric Incontinence/Constipation Scoring System (PICSS) was scored for all participants. PICSS is a validated questionnaire with scores mapped to an age-specific normogram to denote constipation, incontinence, and their combinations. Non-parametric and chi-square tests at significance p<0.05 were conducted to examine the relationship between PICSS categories and manometry findings. Ethical approval was obtained.

    RESULTS: There were 32 participants (30 boys). Median age at participation was 26.5 months (range: 13.8-156). Twenty-four (75%) had transanal pullthrough, 8(25%) underwent Duhamel procedure. PICSS scored 10(31.3%) as normal, 8(25%) as constipation, 10(31.3%) as incontinent, and 4(12.5%) as mixed. RAIR was present in 12 patients (37.5%). HPZ, maximum ARP, mean ARP were comparable across all PICSS groups without statistically significant differences. Presence of RAIR was not significantly associated with any PICSS groups (p = 0.13).

    CONCLUSION: Bowel function does not appear to be significantly associated with HRAM findings after definitive pullthrough for HD, but our study is limited by small sample size. RAIR was present in 37.5% patients after pullthrough.

    LEVEL OF EVIDENCE: Level II.

    Matched MeSH terms: Anal Canal
  3. Paka C, Atan IK, Dietz HP
    Tech Coloproctol, 2016 Feb;20(2):123-8.
    PMID: 26573810 DOI: 10.1007/s10151-015-1397-z
    Patient self-report is important in the assessment of the impact of anal incontinence (AI) on quality of life. This study aimed to (1) determine the correlation between total St. Mark's Incontinence Score (SMIS) and a single-item visual analogue scale (VAS) for bother from AI, and (2) determine the correlation between individual components of SMIS and VAS.
    Matched MeSH terms: Anal Canal/physiopathology
  4. Hassan MZ, Rathnayaka MM, Deen KI
    World J Surg, 2010 Jul;34(7):1641-7.
    PMID: 20180122 DOI: 10.1007/s00268-010-0489-1
    We undertook a prospective longitudinal study of patients with end-stage fecal incontinence who were undergoing transposition of the gracilis muscle as a neo-anal sphincter with external low-frequency electrical stimulation of the nerve to the gracilis combined with biofeedback.
    Matched MeSH terms: Anal Canal/surgery*
  5. Krause HG, Wong V, Ng SK, Tan GI, Goh JTW
    Aust N Z J Obstet Gynaecol, 2019 08;59(4):585-589.
    PMID: 31146301 DOI: 10.1111/ajo.12990
    BACKGROUND: While pelvic floor ultrasound is commonly utilised in high-resource locations, our understanding of pelvic floor characteristics in women suffering with obstetric fistula and unrepaired fourth degree obstetric tears in low-resource areas is limited.

    AIMS: This study aimed to assess the pelvic floor ultrasound characteristics of Ugandan women suffering with obstetric fistula, unrepaired fourth degree obstetric tears and pelvic organ prolapse, and determine whether obstructed labour resulting in obstetric fistula causes more levator muscle defects compared to parous women without a history of obstructed labour.

    MATERIALS AND METHODS: This was a prospective study in western Uganda assessing 82 women with obstetric fistula, unrepaired fourth degree obstetric tears and pelvic organ prolapse with a pelvic floor ultrasound scan.

    RESULTS: Demographic characteristics were significantly different, with women suffering pelvic organ prolapse being older and more parous. Hiatal area on Valsalva was significantly smaller in the obstetric fistula group (mean 21.45 cm2 ) compared to non-obstetric fistula group (unrepaired fourth degree obstetric tears and pelvic organ prolapse; mean 30.44 cm2 ); a mean difference of 9.0 cm2 (95% CI: 5.4-12.6 cm2 , P 

    Matched MeSH terms: Anal Canal/injuries*
  6. Shek KL, Atan IK, Dietz HP
    Female Pelvic Med Reconstr Surg, 2016 Nov-Dec;22(6):472-475.
    PMID: 27682743
    OBJECTIVES: The aim of this study was to correlate clinical findings of anal sphincter defects and function with a sonographic diagnosis of significant sphincter defects.

    METHODS: This is an observational cross-sectional study on women seen 6 to 10 weeks after primary repair of obstetric anal sphincter injuries (OASIs). All patients underwent a standardized interview including the St Mark incontinence score, a digital rectal examination, and 3-/4-dimensional transperineal ultrasound imaging.

    RESULTS: Two hundred forty-five patients were seen after primary repair of OASIs. Mean age was 29 (17-43) years. They were assessed at a median of 58 (15-278) days postpartum. One hundred fifty-seven (64%) delivered normal vaginally, 72 (29%) delivered by vacuum, and 16 (7%) delivered by forceps. A comparison of external anal sphincter (EAS) and internal anal sphincter ultrasound volume data and palpation was possible in 220 and 212 cases, respectively. Sphincter defects at rest and on contraction were both detected clinically in 17 patients. Significant abnormalities of the EAS were diagnosed on tomographic ultrasound imaging in 99 cases (45%), and significant abnormalities of the internal anal sphincter were diagnosed in 113 cases (53%). Agreement between digital and sonographic findings of sphincter defect was poor (k = 0.03-0.08). Women with significant EAS defects on ultrasound were found to have a lower resistance to digital insertion (P = 0.018) and maximum anal squeeze (P = 0.009) on a 6-point scale. The difference was however small.

    CONCLUSIONS: Digital rectal examination does not seem to be sufficiently sensitive to diagnose residual sphincter defects after primary repair of OASIs. Imaging is required for the evaluation of sphincter anatomy after repair.
    Matched MeSH terms: Anal Canal/injuries*
  7. Lin S, Atan IK, Dietz HP, Herbison P, Wilson PD
    Aust N Z J Obstet Gynaecol, 2019 08;59(4):590-596.
    PMID: 30793279 DOI: 10.1111/ajo.12948
    BACKGROUND: Levator ani muscle (LAM) and anal sphincter injuries are common after vaginal birth and are associated with pelvic organ prolapse and anal incontinence.

    AIMS: Our objective was to investigate long-term association between delivery mode, LAM avulsion and obstetric anal sphincter injuries (OASIS) in women at least 20 years after their first birth.

    METHODS: All women recruited at 'index birth' of the Dunedin (New Zealand) arm of ProLong (PROlapse and incontinence LONG-term research) Study, were invited to have translabial and transperineal ultrasound assessment of LAM and anal sphincters. Post-processing analysis of imaging data was performed blinded against delivery data. Statistical analysis was performed using the χ2 test and results are expressed as odds ratios (OR).

    RESULTS: Of the initial 1250 participants, 196 women returned for examination. Mean age was 50.8 years with a mean body mass index of 27.6 and median parity was three. They were seen on average 23 years after their first delivery. Four data sets were unavailable and one declined ultrasound assessment, leaving 191 for analysis. LAM avulsion was diagnosed in 29 (15.2%), and 24 women (12.6%) had significant anal sphincter defect. LAM avulsion was associated with forceps delivery (OR 2.45, 95% CI 1.04-5.80, P = 0.041). Forceps conveyed a greater risk of OASIS (21%) compared to a spontaneous vaginal delivery (11%) but did not reach statistical significance.

    CONCLUSIONS: Forceps delivery is associated with long-term injurious effect on pelvic floor structures. Discussions of the long-term negative impact of pelvic floor structures and their functions are necessary to achieve an informed consent toward an operative vaginal delivery.

    Matched MeSH terms: Anal Canal/injuries*
  8. Yunihastuti E, Teeratakulpisarn N, Jeo WS, Nilasari H, Rachmadi L, Somia IKA, et al.
    AIDS, 2020 11 01;34(13):1933-1941.
    PMID: 32773478 DOI: 10.1097/QAD.0000000000002654
    OBJECTIVES: Persistent anal high-risk human papillomavirus (HR-HPV) infection is a major risk factor for anal cancer among MSM and transgender women (TGW). We aimed to estimate incidence, clearance, and persistence of anal HR-HPV in HIV-positive and HIV-negative MSM and TGW, and to assess factors for HR-HPV persistence.

    DESIGN: Prospective cohort study.

    METHODS: MSM and TGW aged at least 18 years, were enrolled from Indonesia, Malaysia, and Thailand, then followed up 6-monthly for 12 months. Anal swabs were collected at every visit for HR-HPV genotypes to define anal HR-HPV incidence, clearance, and persistence. Logistic regression was used to evaluate factors associated with HR-HPV persistence.

    RESULTS: Three hundred and twenty-five MSM and TGW were included in this study, of whom 72.3% were HIV-positive. The incidence of anal HR-HPV persistence was higher in HIV-positive than HIV-negative MSM participants (28.4/1000 vs. 13.9/1000 person-months). HIV-positive participants had HR-HPV lower clearance rate than HIV-negative participants (OR 0.3; 95% CI 0.1-0.7). The overall persistence of HR-HPV was 39.9% in HIV-positive and 22.8% HIV-negative participants. HPV-16 was the most persistent HR-HPV in both HIV-positive and HIV-negative participants. HIV infection (aOR 2.87; 95% CI 1.47-5.61), living in Kuala Lumpur (aOR 4.99; 95% CI 2.22-11.19) and Bali (aOR 3.39; 95% CI 1.07-10.75), being employed/freelance (aOR 3.99; 95% CI 1.48-10.77), and not being circumcised (aOR 2.29; 95% CI 1.07-4.88) were independently associated with anal HR-HPV persistence.

    CONCLUSION: HIV-positive MSM and TGW had higher risk of persistent anal HR-HPV infection. Prevention program should be made available and prioritized for HIV-positive MSM and TGW where resources are limited.

    Matched MeSH terms: Anal Canal/virology*
  9. Low HC, Silver MI, Brown BJ, Leng CY, Blas MM, Gravitt PE, et al.
    J Clin Microbiol, 2015 Feb;53(2):550-6.
    PMID: 25502520 DOI: 10.1128/JCM.02274-14
    Human papillomavirus (HPV) is causally associated with anal cancer, as HPV DNA is detected in up to 90% of anal intraepithelial neoplasias and anal cancers. With the gradual increase of anal cancer rates, there is a growing need to establish reliable and clinically relevant methods to detect anal cancer precursors. In resource-limited settings, HPV DNA detection is a potentially relevant tool for anal cancer screening. Here, we evaluated the performance of the Hybribio GenoArray (GA) for genotyping HPV in anal samples, against the reference standard Roche Linear Array (LA). Anal swab samples were obtained from sexually active men who have sex with men. Following DNA extraction, each sample was genotyped using GA and LA. The overall interassay agreement, type-specific, and single and multiple genotype agreements were evaluated by kappa statistics and McNemar's χ(2) tests. Using GA and LA, 68% and 76% of samples were HPV DNA positive, respectively. There was substantial interassay agreements for the detection of all HPV genotypes (κ = 0.70, 86% agreement). Although LA was able to detect more genotypes per sample, the interassay agreement was acceptable (κ = 0.53, 63% agreement). GA had poorer specific detection of HPV genotypes 35, 42, and 51 (κ < 0.60). In conclusion, GA and LA showed good interassay agreement for the detection of most HPV genotypes in anal samples. However, the detection of HPV DNA in up to 76% of anal samples warrants further evaluation of its clinical significance.
    Matched MeSH terms: Anal Canal/virology*
  10. Kim M, Meurette G, Ragu R, Lehur PA
    Tech Coloproctol, 2016 Jun;20(6):395-399.
    PMID: 27170284 DOI: 10.1007/s10151-016-1473-z
    BACKGROUND: The aim of this study was to perform a survey on the surgical management of obstructed defecation (OD) across advocated selected coloproctological experts across Europe.

    METHODS: Surgeons from 42 centers of coloproctology in Europe were asked to complete a questionnaire, including seven questions about their past and present operative treatment strategy for patients with OD.

    RESULTS: The questionnaire was completed by 32 experts of pelvic floor surgery in 13 European countries. All but one indicated that they consider surgical treatment for OD. Seventy-four percent of these have been using transanal stapled rectal resection (STARR) and 96 % transabdominal rectopexy. While only 65 %, who have begun performing STARR are still using transanal resection, the technique is still being used by all surgeons performing abdominal procedures. Rectopexy only, STARR only, or both approaches are offered by 52, 3, and 45 % of surgeons, respectively.

    CONCLUSIONS: The use of STARR in the treatment of OD is decreasing among European opinion leaders in the field of pelvic floor surgery, while the application of transabdominal procedures continues.

    Matched MeSH terms: Anal Canal/surgery
  11. Somia IKA, Teeratakulpisarn N, Jeo WS, Yee IA, Pankam T, Nonenoy S, et al.
    Medicine (Baltimore), 2018 Mar;97(10):e9898.
    PMID: 29517698 DOI: 10.1097/MD.0000000000009898
    This study aimed to assess the prevalence of and associated risk factors for anal high-risk human papillomavirus (hr-HPV) infection among men who have sex with men (MSM) and transgender women (TGW) in Indonesia, Thailand, and Malaysia.This was baseline data from a prospective cohort study with clinic sites in Jakarta and Bali (Indonesia), Bangkok (Thailand), and Kuala Lumpur (Malaysia).MSM and TGW aged 18 years and older from Indonesia, Thailand, and Malaysia were enrolled. Demographic and behavioral characteristics were assessed, and anal samples were collected for HPV genotyping. Multivariate logistic regression models were used to assess risk factors for anal hr-HPV overall and among HIV-positive participants.A total of 392 participants were enrolled, and 48 were TGW. As many as 245 were HIV-positive, and 78.0% of the participants were on combination antiretroviral therapy (cART). Median CD4 count was 439 cells/mm and 68.2% had undetectable HIV-RNA. HIV-positive participants had significantly more hr-HPV compared to HIV-negative participants (76.6% vs 53.5%, P anal hr-HPV infection compared with HIV-negative (OR: 2.87, 95% CI: 1.76-4.70, P ≤ .001), whereas among HIV-positive participants transgender identity had lower prevalence of hr-HPV infection (OR: 0.42, 95% CI: 0.19-0.91, P = .03).High-risk HPV infection was very common among MSM and TGW in South-East Asia. Overall, HIV-infection, regardless of cART use and immune status, significantly increased the risk, while among HIV-positive participants transgender identity seemed to decrease the risk of anal hr-HPV.
    Matched MeSH terms: Anal Canal/virology
  12. Kamisan Atan I, Lai SK, Langer S, Caudwell-Hall J, Dietz HP
    Int Urogynecol J, 2019 06;30(6):917-923.
    PMID: 30741317 DOI: 10.1007/s00192-019-03887-z
    INTRODUCTION AND HYPOTHESIS: Forceps delivery and length of second stage are risk factors of maternal birth trauma, i.e., levator ani muscle (LAM) avulsion and anal sphincter trauma. The cesarean section (CS) rate has recently become the key performance indicator because of its increase worldwide. Attempts to reduce CS rates seem to have led to an increase in forceps deliveries and longer second stages. This study aimed to determine the association between variations in obstetric practice (between hospitals) and maternal birth trauma.

    METHODS: This was a retrospective ancillary analysis involving 660 nulliparous women carrying an uncomplicated singleton term pregnancy in a prospective perinatal intervention trial at two Australian tertiary obstetric units. They had been seen antenatally and at 3-6 months postpartum for a standardized clinical assessment between 2007 and 2014. Primary outcome measures were sonographically diagnosed LAM and external anal sphincter (EAS) trauma.

    RESULTS: The incidence of LAM avulsion (11.5% vs. 21.3%, P = 0.01) and composite trauma, i.e., LAM avulsion ± EAS injury (29.2% vs. 39.7%, P = 0.03) were higher in one of the two hospitals, where the forceps delivery rate was also higher (10.9% vs. 2.6%, P 

    Matched MeSH terms: Anal Canal/injuries*
  13. Kamisan Atan I, Lin S, Dietz HP, Herbison P, Wilson PD, ProLong Study Group
    Int Urogynecol J, 2018 Nov;29(11):1637-1643.
    PMID: 29564511 DOI: 10.1007/s00192-018-3616-4
    INTRODUCTION AND HYPOTHESIS: Levator ani muscle (LAM) and anal sphincter tears are common after vaginal birth and are associated with female pelvic organ prolapse and anal incontinence. The impact of subsequent births on LAM and external anal sphincter (EAS) integrity is less well defined. The objective of this study was to determine the prevalence of LAM and EAS trauma in primiparous (VP1) and multiparous (VP2+) women who had delivered vaginally to assess if there were differences between the two groups. The null hypothesis was: there is no significant difference in the prevalence of LAM and EAS trauma between the two groups.

    METHODS: This was a cross-sectional study involving 195 women, participants of the Dunedin arm of the ProLong study (PROlapse and incontinence LONG-term research study) seen 20 years after their index birth. Assessment included a standardized questionnaire, ICS POP-Q and 4D translabial ultrasound. Post-imaging analysis of LAM and EAS integrity was undertaken blinded against other data. Statistical analysis was performed using Fisher's exact test and results were expressed as odds ratios (OR).

    RESULTS: LAM avulsion and EAS defects were diagnosed in 31 (16%) and 24 (12.4%) women respectively. No significant difference in the prevalence of levator avulsion and EAS defects between primiparous (VP1) and multiparous (VP2+) women who had delivered vaginally (OR 1.9, 95% CI 0.72-5.01, p = 0.26) and (OR 1.2, 95% CI 0.4-3.8, p = 0.76) respectively.

    CONCLUSIONS: Most LAM avulsions and EAS defects seem to be caused by the first vaginal birth. Subsequent vaginal deliveries after the first were unlikely to cause further LAM trauma.

    Matched MeSH terms: Anal Canal/injuries*
  14. Ali J, Cheah FKC
    Med J Malaysia, 1987 Sep;42(3):201-3.
    PMID: 3333537
    A rare complication of per rectal extrusion of a ventricule peritoneal shunt catheter occuring in a four-month old Chinese baby boy with hydrocephalus is described. Perforation of the bowel by the shunt occurred without any peritonitis or retrograde infection of the shunt system. Its pathogenesis and diagnosis are discussed.
    Matched MeSH terms: Anal Canal
  15. Caudwell-Hall J, Kamisan Atan I, Guzman Rojas R, Langer S, Shek KL, Dietz HP
    Am J Obstet Gynecol, 2018 10;219(4):379.e1-379.e8.
    PMID: 30063899 DOI: 10.1016/j.ajog.2018.07.022
    BACKGROUND: Trauma to the perineum, levator ani complex, and anal sphincter is common during vaginal childbirth, but often clinically underdiagnosed, and many women are unaware of the potential for long-term damage.

    OBJECTIVE: In this study we use transperineal ultrasound to identify how many women will achieve a normal vaginal delivery without substantial damage to the levator ani or anal sphincter muscles, and to create a model to predict patient characteristics associated with successful atraumatic normal vaginal delivery.

    STUDY DESIGN: This is a retrospective, secondary analysis of data sets gathered in the context of an interventional perinatal imaging study. A total of 660 primiparas, carrying an uncomplicated singleton pregnancy, underwent an antepartum and postpartum interview, vaginal exam (Pelvic Organ Prolapse Quantification), and 4-dimensional translabial ultrasound. Ultrasound data were analyzed for levator trauma and/or overdistention and residual sphincter defects. Postprocessing analysis of ultrasound volumes was performed blinded against clinical data and analyzed against obstetric data retrieved from the local maternity database. Levator avulsion was diagnosed if the muscle insertion at the inferior pubic ramus at the plane of minimal hiatal dimensions and within 5 mm above this plane on tomographic ultrasound imaging was abnormal, ie the muscle was disconnected from the inferior pubic ramus. Hiatal overdistensibility (microtrauma) was diagnosed if there was a peripartum increase in hiatal area on Valsalva by >20% with the resultant area ≥25 cm2. A sphincter defect was diagnosed if a gap of >30 degrees was seen in ≥4 of 6 tomographic ultrasound imaging slices bracketing the external anal sphincter. Two models were tested: a first model that defines severe pelvic floor trauma as either obstetric anal sphincter injury or levator avulsion, and a second, more conservative model, that also included microtrauma.

    RESULTS: A total of 504/660 women (76%) returned for postpartum follow-up as described previously. In all, 21 patients were excluded due to inadequate data or intercurrent pregnancy, leaving 483 women for analysis. Model 1 defined nontraumatic vaginal delivery as excluding operative delivery, obstetric anal sphincter injuries, and sonographic evidence of levator avulsion or residual sphincter defect. Model 2 also excluded microtrauma. Of 483 women, 112 (23%) had a cesarean delivery, 103 (21%) had an operative vaginal delivery, and 17 (4%) had a third-/fourth-degree tear, leaving 251 women who could be said to have had a normal vaginal delivery. On ultrasound, in model 1, 27 women (6%) had an avulsion and 31 (6%) had a residual defect, leaving 193/483 (40%) who met the criteria for atraumatic normal vaginal delivery. In model 2, an additional 33 women (7%) had microtrauma, leaving only 160/483 (33%) women who met the criteria for atraumatic normal vaginal delivery. On multivariate analysis, younger age and earlier gestation at time of delivery remained highly significant as predictors of atraumatic normal vaginal delivery in both models, with increased hiatal area on Valsalva also significant in model 2 (all P ≤ .035).

    CONCLUSION: The prevalence of significant pelvic floor trauma after vaginal child birth is much higher than generally assumed. Rates of obstetric anal sphincter injury are often underestimated and levator avulsion is not included as a consequence of vaginal birth in most obstetric text books. In this study less than half (33-40%) of primiparous women achieved an atraumatic normal vaginal delivery.

    Matched MeSH terms: Anal Canal
  16. Siti Aishah Sulaiman, Nor Azian Abdul Murad, Chow, Yock Ping, Zam Zureena Mohd Rani, Salwati Shuib, Dayang Anita A. Aziz, et al.
    MyJurnal
    VACTERL association is a rare genetic disorder involving at least three of the following congenital
    malformations: vertebral defects (V), anal atresia (A), cardiac defects (C), trachea-oesophageal fistula with
    or without oesophageal atresia (TE), renal anomalies (R) and limb abnormalities (L). Until now, the
    aetiology of VACTERL association is unknown, particularly at the molecular level. Here, we performed
    whole exome sequencing (WES) of an infant with VACTERL association. The patient was delivered
    prematurely at 30 weeks and had 4/6 of the VACTERL malformations. Trio-WES analysis was performed
    using Torrent Suite and ANNOVAR. Polymorphisms with an allele frequency of >0.01 were excluded, and
    the remaining variants were filtered based on de novo mutations, autosomal recessive, X-linked and di-genic
    inheritance traits. In this patient, no homozygous, compound heterozygous or X-linked mutations was
    associated with VACTERL. However, we identified two heterozygous mutations; KIF27
    (ENST00000297814: c.3004A> C:p.N1002H) and GNAS (ENST00000371098: c.205C>A:p.H69N) genes that
    were inherited from her father and mother respectively. A de novo, IFT140 gene mutation
    (ENST00000426508: c.683C>G:p.S228C) was also identified in this patient. The VACTERL phenotype in
    this patient may due to heterozygous mutations affecting KIF27 and GNAS genes, inherited via autosomal
    recessive trait. In addition, the IFT140 gene mutation may also be involved. These genes are known to be
    directly or non-directly involved in the sonic hedgehog signalling that is known to be implicated in
    VACTERL. This is the first report of these genetic mutations in association with VACTERL.
    Matched MeSH terms: Anal Canal
  17. Dey YN, Wanjari MM, Kumar D, Lomash V, Jadhav AD
    J Ethnopharmacol, 2016 Nov 04;192:183-191.
    PMID: 27426509 DOI: 10.1016/j.jep.2016.07.042
    ETHNOPHARMACOLOGICAL RELEVANCE: Amorphophallus paeoniifolius (Dennst.) Nicolson (Family- Araceae) is a crop of south East Asian origin. In India, its tuber is widely used in ethnomedicinal practices by different tribes for the treatment of piles (hemorrhoids).

    AIM: The present study evaluated the effect of methanolic and aqueous extract of Amorphophallus paeoniifolius tuber on croton oil induced hemorrhoids in rats.

    MATERIALS AND METHODS: The methanolic extract was standardized with the major phenolic compound, betulinic acid, by HPLC. The hemorrhoids were induced by applying 6% croton oil preparation in the ano-rectal region. Rats were orally administered methanolic and aqueous extract at doses of 250 and 500mg/kg, each for 7 days. Pilex (200mg/kg) was used as reference anti-hemorrhoidal drug. Hemorrhoids were assessed on eighth day by measuring hemorrhoidal and biochemical parameters along with histology of ano-rectal tissue.

    RESULTS: Croton oil application caused induction of hemorrhoids as indicated by significant (p<0.001) increase in plasma exudation of Evans blue in ano-rectal tissue, macroscopic severity score and ano-rectal coefficient as compared to normal rats. It significantly (p<0.001) elevated lactate dehydrogenase and cytokines (TNF-α and IL-6) levels in serum and increased myeloperoxidase activity and lipid peroxidation in ano-rectal tissue along with marked histological damage as compared to normal rats. Treatment with tuber extracts and pilex significantly (p<0.05-p<0.001) ameliorated Evans blue exudation, hemorrhoidal parameters and other biochemical parameters with attenuation of tissue damage compared to hemorrhoid control rats. The results indicate that tuber extracts exhibited curative action on hemorrhoids. The aqueous extract showed more pronounced effect than methanolic extract. The effects may be attributed to anti-inflammatory and antioxidant properties.

    CONCLUSION: Results indicate that tuber of Amorphophallus paeoniifolius exhibited curative action on hemorrhoids through anti-inflammatory and antioxidant properties. The study validates the ethnomedicinal use of tuber in hemorrhoids and implicates its therapeutic potential as an anti-hemorrhoidal agent.

    Matched MeSH terms: Anal Canal/drug effects*; Anal Canal/metabolism; Anal Canal/pathology
  18. Heo CC, Sallehudin Sulaiman, Hidayatulfathi Othman, Baharudin Omar, Jeffery J, Kurahashi H
    This study was carried out in an oil palm plantation in Tanjung Sepat, Selangor in September 2007 by using pigs (Sus scrofa L.) as a carcass model in a forensic entomological research. A 2.5 month old pig (10 kg) which died naturally was hanged on a palm tree to observe the insect succession and decomposition stages. Observation was made for 16 days; one afternoon visit per day and all climatological data were recorded. On the first day, adult muscids of Ophyra spinigera Stein and Musca domestica L. were observed, however no blowfly (Calliphoridae) activities were sighted. Fly eggs wer seen on the second day on both sides of the face, inside nostrils and genitourinary area. Adults of Chrysomya megacephala Fabricius and Chrysomya rufifacies (Macquart) congregated on the head and anal areas. Adult flies and maggots (first and second instars) were observed in the mouth and anus of the pig on the third day of hanging. Adult yellow jackets (Vespidae) and spiders (Arachnida) were found preying on some adult flies. Rove beetles (Staphilinidae) were also discovered on the pig carcass. Only a few ants (Formicidae) were sighted. Maggot masses were found in eye orbits, neck, and genital organs on the fourth day of hanging and some maggots were seen falling down to the ground. The dominant maggot species identified on this day was Ch. megacephala. On the sixth day, the head, neck, and anus were in the stage of active decay. Maggots of Ch. rufifacies were abundant on the seventh day and was the dominant species. On day eight the carcass fell onto the ground. Chrysomya rufifacies maggots were found underneath the pig carcass and they started to migrate and pupated under the soil. On the tenth day, third instar Op. spinigera maggots were found under the carcass. The rate of carcass decomposition slowed down and became stable from tenth day onwards to the sixteenth day of decomposition. Thereafter, most of the remaining parts of the body remained dried and devoid of any insects.
    Matched MeSH terms: Anal Canal
  19. Chua LL, Rajasuriar R, Azanan MS, Abdullah NK, Tang MS, Lee SC, et al.
    Microbiome, 2017 03 20;5(1):35.
    PMID: 28320465 DOI: 10.1186/s40168-017-0250-1
    BACKGROUND: Adult survivors of childhood cancers such as acute lymphoblastic leukemia (ALL) have health problems that persist or develop years after cessation of therapy. These late effects include chronic inflammation-related comorbidities such as obesity and type 2 diabetes, but the underlying cause is poorly understood.

    RESULTS: We compared the anal microbiota composition of adult survivors of childhood ALL (N = 73) with healthy control subjects (N = 61). We identified an altered community with reduced microbial diversity in cancer survivors, who also exhibit signs of immune dysregulation including increased T cell activation and chronic inflammation. The bacterial community among cancer survivors was enriched for Actinobacteria (e.g. genus Corynebacterium) and depleted of Faecalibacterium, correlating with plasma concentrations of IL-6 and CRP and HLA-DR+CD4+ and HLA-DR+CD8+ T cells, which are established markers of inflammation and immune activation.

    CONCLUSIONS: We demonstrated a relationship between microbial dysbiosis and immune dysregulation in adult ALL survivors. These observations suggest that interventions that could restore microbial diversity may ameliorate chronic inflammation and, consequently, development of late effects of childhood cancer survivors.

    Matched MeSH terms: Anal Canal/microbiology
  20. Hai-Ying C, Guzmán Rojas R, Hall JC, Atan IK, Dietz HP
    Int Urogynecol J, 2016 Feb;27(2):229-32.
    PMID: 26264476 DOI: 10.1007/s00192-015-2813-7
    INTRODUCTION AND HYPOTHESIS: Obstructed defecation is a common symptom complex in urogynaecological patients, and perineal, vaginal and/or anal digitation may required for defecation. Translabial ultrasound can be used to assess anorectal anatomy, similar to defecation proctography. The aim of the present study was to determine the association between different forms of digitation (vaginal, perineal and anal) and abnormal posterior compartment anatomy.

    METHODS: A total of 271 patients were analysed in a retrospective study utilising archived ultrasound volume datasets. Symptoms of obstructed defecation (straining at stool, incomplete bowel emptying, perineal, vaginal and anal digitation) were ascertained on interview. Postprocessing of stored 3D/4D translabial ultrasound datasets obtained on maximal Valsalva was used to diagnose descent of the rectal ampulla, rectocoele, enterocoele and rectal intussusception at a later date, blinded to all clinical data.

    RESULTS: Digitation was reported by 39 % of our population. The position of the rectal ampulla on Valsalva was associated with perineal (p = 0.02) and vaginal (p = 0.02) digitation. The presence of a true rectocoele was significantly associated with perineal (p = 0.04) and anal (p = 0.03) digitation. Rectocoele depth was associated with all three forms of digitation (P = 0.005-0.02). The bother of symptoms of obstructed defecation was strongly associated with digitation (all P 

    Matched MeSH terms: Anal Canal
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