MEDITERRANEAN DIET AND ITS IMPACT ON THE ILLNESS CHARACTERISTIC OF YOUTH WITH IRRITABLE BOWEL CONDITION

Irritable Bowel Disorder (IBD) is a prevalent digestive illness that frequently affects young people and drastically decreases the Quality of Life (QoL). Adults with IBD indications may find relief from their symptoms through nutritional changes like the Mediterranean-style diet. Concerning the seriousness of symptoms, QoL, and additional pertinent results in young people with IBD, this investigation seeks to determine the impact of the Mediterranean-style diet. 200 individuals with IBD who met the Rome-IV criterion and were between the ages of 13 and 19 were enrolled in the present research. A Mediterranean-style diet was provided to the Study Group (SG), which consisted of 100 individuals, while the Control Group (CG), which consisted of 100 patients, followed the usual diet. Various laboratory and clinical characteristics were also assessed at the beginning and end of the study, in addition to IBD values. The Mediterranean-style diet has been demonstrated to be effective and tolerated well in kids and teenagers with IBD. The IBD -SSS (from 148±42.3 to 224±71) IBD -QoL (from 76.7±8.1 to 61.3±9.8), and cumulative IBD rating (from 29.3±11.7 to 32.6±12.1) all showed notable increases in individuals who followed well to this diet. The CG, in comparison, did not show any significant enhancements in these factors. This indicates that a Mediterranean-style diet might provide therapeutic advantages for IBD individuals, especially those who keep adherent to it, concerning symptom severity and QoL. The Mediterranean-style diet proved to be both secure and associated with notable improvements in IBD rates in young and adolescents with IBD.

O-252 Next generation sequencing analysis of the seminal microbiome in male partners of women with idiopathic recurrent pregnancy loss: results of a prospective cohort study

Study question

Is there an association between the semen microbiome, seminal reactive oxygen species (ROS) and DNA fragmentation in men with recurrent pregnancy loss (RPL)?

Summary answer

This pilot study outlines the subtle role that microbiota play in influencing ROS and sperm DNA damage for male partners of women with RPL

What is known already

RPL is defined as the loss of two or more consecutive pregnancies. This devastating condition impacts approximately 1% of couples. Paternal causes are not routinely screened for and an underlying cause is not found in up to 50% of cases. Recent studies have reported an association between elevated seminal ROS and sperm DNA fragmentation in the male partner, and RPL. We hypothesised that seminal microbiota contribute to increased ROS and sperm DNA damage. To test this, we investigated the relationship between seminal bacterial composition and ROS levels in men with proven fertility versus men with a history of RPL.

Study design, size, duration

We conducted a prospective, case-control study and recruited participants between November 2018 and March 2020 at Imperial College Healthcare NHS Trust. A total of 109 men participated in the study; 46 men with RPL and 63 men with proven fertility and no history of RPL. Each participant attended for a single study visit which consisted of a full medical history, assessment of testicular volume, height, weight, blood samples and production of a semen sample.

Participants/materials, setting, methods

Routine semen analysis (WHO) and endocrine and lipid profiles were performed for all patients. Semen ROS and DNA fragmentation were performed (luminol and TUNEL methodologies, respectively). ROS were classified as high (>3.77 RLU/s) or low (<3.77 RLU/s). Metataxonomic profiling of samples was performed using Illumina Miseq-based sequencing of the V1-V2 hypervariable regions of bacterial 16S rRNA gene amplicons. Multivariate and univariate modelling was performed to explore associations between metataxonomic profiles, ROS levels and clinical metadata.

Main results and the role of chance

Men with RPL had higher mean semen volume (p = 0.02) and increased prevalence of high ROS (p = 0.02, Fisher's exact) compared with controls; but other clinical characteristics were similar between groups. A total of 3,700,136 high quality sequence reads were generated for the dataset with an average of 33,946 reads/sample. Hierarchical clustering of bacterial genera relative abundances identified 4 distinct microbial signatures characterised by high relative abundance of 1. Streptococcus, 2. Lactobacillus and Gardnerella, 3. polymicrobial (including Prevotella), and 4. Corynebacterium and Finegoldia. Prevalences of these groups were similar in control and RPL groups (p = 0.11). Additionally, no association between the bacterial genera groups and elevated ROS, DNA fragmentation, or clinical factors such as age, ethnicity, or semen volume were observed (chi-square tests). At species taxonomy level relative abundance of L. crispatus was higher in controls compared to RPL, but did not withstand false discovery rate correction for multiple testing (p = 0.006, q = 0.67). Higher relative abundance of Microbacterium was detected in semen samples with high DNA fragmentation (p = 8.7E-4, q = 0.08). This relationship was even stronger within the RPL cohort (p = 2.8E-5, q = 0.002). No significant enrichment of specific taxa was observed between high or low ROS samples however, low ROS was associated with Corynebacterium relative abundance >20%.

Limitations, reasons for caution

More patients are required to enhance statistical power. Duplicate sample collection may establish the robustness of seminal compositions observed. Time since last sexual intercourse samples may affect the analysis. Concomitant analysis of the vaginal microbiome of female partners may improve our understanding of how partners may affect each other’s fertility.

Wider implications of the findings

Our data suggests interactions between microbiota composition, ROS and sperm DNA damage which may be implicated in the pathogenesis of recurrent miscarriage. Further studies are needed to determine if seminal microbiota play causal roles in RPL, and whether interventions modifying the seminal microbiome may modify pregnancy outcomes in affected couples

Trial registration number

not applicable

Comment on: Multimodal analgesia with thoracic epidural after transthoracic oesophagectomy: Do we need more evidence?

This article is a response to the publication ‘Comparison of multimodal analgesia with thoracic epidural after transthoracic oesophagectomy’. It discuss the differing outcomes from using this technique in other publications.

P–635 Standard versus mild ovarian stimulation in women with polycystic ovaries (PCO): Impact on outcomes in subsequent frozen embryo treatment cycles (FET)

Study question

Does mild ovarian stimulation in women with PCO result in higher live birth rates during subsequent FET cycles?

Summary answer

Mild ovarian stimulation with FSH doses <150IU did not result in higher clinical pregnancy or livebirth rates in subsequent FET.

What is known already

Ovarian stimulation during IVF in women with PCO is associated with an exaggerated response, ovarian hyperstimulation syndrome, poor egg to follicle ratio, low fertilisation rates and poor blastocyst conversion. Mild ovarian stimulation, often referred to as protocols with FSH doses under 150IU, is often employed to overcome these challenges. One of the perceived benefits of this approach is improved oocyte and embryo quality reflected in lower aneuploidy rates.

Study design, size, duration

This was a retrospective observational study looking at 99 FET between January 2011 and Jan 2021 that followed a fresh cycle in women with a pre-treatment antral follicle count of 12 + 12 or greater. Patients were identified through the antral follicle count at the pre-treatment investigation ultrasound scan. Ultrasound findings, treatment cycle details and clinical outcomes were entered prospectively into a dedicated clinic database. Data was retrieved and analysed using SPSS V25.

Participants/materials, setting, methods

The study was conducted in a large IVF centre. Data on women with an AFC of 12 + 12 or above, undergoing an autologous FET cycle following a fresh cycle were collected. Women were split into those receiving <150IU of FSH (Group1, n = 51) and those receiving FSH ³150 IU (Group 2, n = 48). Binary logistic regression analysis was performed to control for confounders. Live birth was the primary outcome, with biochemical and clinical pregnancy being secondary outcomes.

Main results and the role of chance

Women in Group 1 were younger (30.8±3.6 v 33.8±3.65, p < 0.005) but had a similar antral follicle count (38.2±11.7 v 34.2±9.1, p = 0.07). The total number of eggs collected (24.1±13.8 v 25.9±8.8, p = 0.45) and fertilisation rate (0.59±0.2 v 0.58±0.18, p = 0.77) during their fresh cycle were comparable. Women in Group 2 had a larger number of embryos suitable for cryopreservation (7.36±4.2 v 4.8±3.5, p = 0.001)

In the subsequent frozen embryo replacement cycle, there was no difference in the number or quality of embryos transferred with most women having a single embryo transfer (63% v 48%, p = 0.14) and at least one top quality embryo transferred (68.6% v 81%, p = 0.15). There was a higher biochemical pregnancy rate in Group 1 (84% v 66%, p = 0.035) but with no difference in clinical pregnancy rate (53% v 44%, p = 0.37) or live birth rate (49% v 42%, p = 0.76). Live birth rates remained comparable even after controlling for age, and number and quality of embryos transferred (OR: 1.21 (95% CI 0.50–2.94).

Limitations, reasons for caution

This was a retrospective analysis raising the risk of allocation bias. This study was also at risk of information bias as it relied on accurate documentation of the AFC at the pre-treatment scan.

Wider implications of the findings: Patients can be reassured that both stimulation protocols result in similar live birth rates in subsequent frozen embryo replacement cycles.

Prospective trials using PGT-A are required to assess whether aneuploidy could account for the discrepancy in biochemical pregnancy rates in the two groups considering the subsequent comparable clinical pregnancy rates.

Trial registration number

Not applicable

Pelvic organ motion and dosimetric implications during horizontal patient rotation for prostate radiation therapy

PURPOSE

Gantry-free radiation therapy systems utilizing patient rotation would be simpler and more cost effective than the conventional gantry-based systems. Such a system could enable the expansion of radiation therapy to meet global demand and reduce capital costs. Recent advances in adaptive radiation therapy could potentially be applied to correct for gravitational deformation during horizontal patient rotation. This study aims to quantify the pelvic organ motion and the dosimetric implications of horizontal rotation for prostate intensity-modulated radiation therapy (IMRT) treatments.

METHODS

Eight human participants who previously received prostate radiation therapy were imaged in a clinical magnetic resonance imaging (MRI) scanner using a bespoke patient rotation system (PRS). The patients were imaged every 45 degrees during a full roll rotation (0-360 degrees). Whole pelvic bone, prostate, rectum, and bladder motion were compared to the supine position using dice similarity coefficient (DSC) and mean absolute surface distance (MASD). Prostate centroid motion was compared in the left-right (LR), superior-inferior (SI), and anterior-posterior (AP) direction prior to and following pelvic bone-guided rigid registration. Seven-field prostate IMRT treatment plans were generated for each patient rotation angles under three adaption scenarios: No plan adaption, rigid planning target volume (PTV)-guided alignment to the prostate, and plan re-optimization. Prostate, rectum, and bladder doses were compared for each adaption scenario.

RESULTS

Pelvic bone motion within the PRS of up to 53 mm relative to the supine position was observed for some participants. Internal organ motion was greatest at the 180-degree PRS couch angle (prone), with prostate centroid motion range < 2 mm LR, 0 mm to 14 mm SI, and -11 mm to 4 mm AP. Rotation with no adaption of the treatment plan resulted in an underdose to the PTV -- in some instances up to 75% (D95%: 78 ± 0.3 Gy at supine to 20 ± 15.0 Gy at the 225-degree PRS couch angle). Bladder dose was reduced during the rotation by up to 98% (V60 Gy: 15.0 ± 9.4% supine to 0.3 ± 0.5% at the 225-degree PRS couch angle). In some instances, the rectum dose increased during rotation (V60Gy: 20.0 ± 4.5% supine to 25.0 ± 15.0% at the 135-degree PRS couch angle). Rigid PTV-guided alignment resulted in PTV coverage which, though statistically lower (P < 0.05 for all D95% values), was within 1 Gy of the supine plans. Plan re-optimization resulted in a statistically equivalent PTV coverage compared to the supine plans (P > 0.05 for all D95% metrics and all within ±0.4 Gy). For both rigid PTV-guided alignment and plan re-optimization, rectum dose volume metrics were reduced compared to the supine position between the 90- and 225-degree PRS couch angles (P < 0.05). Bladder dose volume metrics were not impacted by rotation.

CONCLUSION

Pelvic bone and internal organ motion are present during patient rotation. Rigid PTV-guided alignment to the prostate will be a requirement if prostate IMRT is to be safely delivered using patient rotation. Plan re-optimization for each PRS couch angle to account for anatomical deformations further improves the PTV coverage.

Risk Factors Related to Intrauterine Fetal Death

BACKGROUND

Intrauterine fetal death is a traumatic event. Stillbirth rate is an important indicator to assess the quality of antenatal care. The objective of the study was to identify the risk factors related to intrauterine fetal death in patients admitted with intrauterine fetal death.

METHODS

It was a descriptive study conducted in the department of Obstetrics and Gynaecology at B. P. Koirala Institute of Health Sciences from January to December 2014. Patients admitted with singleton pregnancy with intrauterine fetal death after 28 weeks gestation were included.

RESULTS

There were 11,006 obstetric admissions. Of them, 152 women had intrauterine fetal death. There were 128(84.2%) women between 20-35 years of age. Out of 152, 81(53.3%) women were preterm and 39(2.1%) women were postterm. Primigravida were 77(50.7%) followed by 35(23%) of second gravida. Hypertension was the commonest identified risk factor in 30(26.78%) women. Out of 152 women, 49(32.2%) had not received formal education. Ten (6.6%) women had a past history of fetal death. Four (2.6%) women had medical disorder before pregnancy. One hundred and twenty five (82.2%) women had vaginal delivery, 21(13.8%) had caesarean section and 6(3.9%) had laparotomy for rupture uterus. The commonest indication for caesarean section was placenta previa for 7(33.33%) women. Four (2.6%) women had diabetes. Ninety five (62.5%) were male and 57(37.5%) were female babies. Five (3.3%) babies had malformations.

CONCLUSIONS

Hypertension in pregnancy was found to be the most common identified risk factor for intrauterine fetal death.

Adverse Maternal and Fetal Outcome in Patients with Eclampsia

BACKGROUND

Eclampsia is a multisystem disorder that may lead to deterioration of maternal condition, hypoxia and acidosis of fetus. Objective was to evaluate the risk factors associated with adverse maternal and fetal outcome in patients with eclampsia.

METHODS

All patients with eclampsia were enrolled after informed consent from February 2013 to February 2014. Questions as per per-forma were asked to the patients and attendants about antenatal visits, parity, number of episodes of seizures, duration from onset of seizure to magnesium sulfate, then the patients were followed as per the hospital protocol, the mode of delivery, outcome of baby, post partum maternal condition and mortality were then noted.

RESULTS

Fifty-two patients with eclampsia were admitted in the study period. Thirty-one patients required mechanical ventilator support. Twenty-five (48.07%) patients were delivered by emergency cesarean section and 30(57.6%) babies were low birth weight and there were 11(21.1%) stillbirths. There was one maternal mortality and 45(86.5%) patients were discharged with improvement but 6(11.5%) patients had neurological impairment. Mortality was significantly related with number of seizure episodes and time interval between seizure onset and administration of magnesium sulphate.

CONCLUSIONS

Early detection of hypertension and management with magnesium sulphate for eclampsia can help to minimize the maternal and fetal adverse outcomes.

Correlation of Pelvic Organ Prolapse Quantification Technique with Pelvic Floor Dysfunction Symptoms

Introduction: Assessment of POP by POP-Q gives anatomical site-specific measurement, which helps in surgery, follow-up and reduces inter-observer variation. The Pelvic Floor Distress Inventory (PFDI) is condition-specific health-related quality of life questionnaires for women with pelvic floor disorders. Objective: To assess pelvic organ prolapse by POP-Q technique and to correlate pelvic floor distress inventory questionnaire with POP-Q segments. Methodology A prospective study was done from March 2014 to February 2015 after ethical approval from IRC, B.P. Koirala Institute of Health Sciences. All patients with pelvic organ prolapse were included after informed verbal consent. The patients were then asked questions as in pelvic floor distress inventory questionnaire (PFDI) and noted in performa. The patients were then examined by POP-Q technique and noted. The informations were entered in the MS excel chart and statistical analysis done using SPSS 11.5. Results: There were 72 patients enrolled. The mean age of patients was 53.65 years. Majority of patients were found to have stage 4 prolapse (43.1%). POP-Q examination showed majority of patients had anterior and apical compartment defect. Correlation between POP-Q points and urinary symptoms showed significant relation with points in anterior compartment, genital hiatus and perineal bodies. Correlation with POP-Q points with colorectal symptoms showed involvement of genital hiatus significantly with strain stool and incomplete bowel movement. Correlation with pelvic distress symptoms with POP-Q sites showed significant relation with bulging, push up vagina for urination and defecation. Conclusion: POP-Q site specific points showed significant correlation with symptoms from Pelvic Floor Distress Inventry (PFDI) questionnaires.

Risk Factors for Adverse Outcome in Pregnant Women with Obstructed Labor

Aims: The aim of the study was to assess the risk factors for adverse outcomes in pregnancy with obstructed labor.Methods: It was a prospective descriptive study conducted at BP Koirala Institute of Health sciences (BPKIHS).The patients with obstructed labour were managed and followed up until delivery and six weeks postpartum from Jan to Dec 2012.Results: There were 57 (0.6%) cases of obstructed labour out of 9500 deliveries. The main cause was cephalopelvic disproportion in 36 (63.2%). The majority of the cases were from rural areas, low socioeconomic status, non salaried and illiterate. Risk for maternal mortality, peripartum hysterectomy and perinatal mortality as adverse outcomes was significantly associated with low socioeconomic status (AOR 12.5, P=0.02) and literacy status (AOR 21.9, P=0.001). If only the risk of perinatal mortality is taken as an adverse outcome, it is significantly associated with booking status (AOR 7, P=0.001), low socioeconomic status (AOR 9.62, P=0.037) and literacy of the patient (AOR 15, P=0.001). Perinatal mortality rate was 100 per 1000 live births in women with obstructed labour. The case fatality rate was 1.2%.

Allosteric Site Inhibitor Disrupting Auto-Processing of Malarial Cysteine Proteases

Falcipains are major haemoglobinases of Plasmodium falciparum required for parasite growth and development. They consist of pro- and mature domains that interact via 'hot-spot' interactions and maintain the structural integrity of enzyme in zymogen state. Upon sensing the acidic environment, these interactions dissociate and active enzyme is released. For inhibiting falcipains, several active site inhibitors exist, however, compounds that target via allosteric mechanism remains uncharacterized. Therefore, we designed and synthesized six azapeptide compounds, among which, NA-01 & NA-03 arrested parasite growth by specifically blocking the auto-processing of falcipains. Inhibitors showed high affinity for enzymes in presence of the prodomain without affecting the secondary structure. Binding of NA-03 at the interface induced rigidity in the prodomain preventing structural reorganization. We further reported a histidine-dependent activation of falcipain. Collectively, for the first time we provide a framework for blocking the allosteric site of crucial haemoglobinases of the human malaria parasite. Targeting the allosteric site could provide high selectivity and less vulnerable to drug resistance.

Mifepristone and Misoprostol Vs Misoprostol Alone in Second Trimester Termination of Pregnancy

Introduction

During the last decade, medical methods for second trimester abortion have considerably improved and become safe and more accessible. The combination of mifepristone and misoprostol is now an established and highly effective method for second trimester abortion. But where mifepristone is not available or affordable, misoprostol alone has also been shown to be effective. The objective of this study is to compare the efficacy of mifepristone with misoprostol and misoprostol alone for second trimester termination of pregnancy.

Methods

It is a comparative study conducted on 60 patients from 13 to 18 weeks of gestation admitted for second trimester termination on legal indications.

Results

Mean induction abortion interval was comparable in both the groups. Of the 30 cases in each group, nine cases in each Group A and six cases in Group B had incomplete/failed expulsion. Among these 15 cases, only nine required check curettage for complete evacuation while others received oxytocics only for completion. The distribution of these cases was also comparable in both the groups. Only one patient in Group B had complete failure of expulsion and underwent surgical evacuation. However, the difference in dosage of misoprostol required for complete expulsion and incidence of side effects were significantly higher in the group B.

Conclusions

Mifepristone and misoprostol combined together is now an established, highly effective and safe method for medical method of second trimester termination. However, when mifepristone is not available or affordable, misoprostol alone can also be used effectively, although a higher total dose is needed and side effects are higher than with the combined regimen.

Peripartum Hysterectomy and Analysis of Risk Factors

Aims: To determine the incidence and risk factors of  women undergoing peripartum hysterectomy at BPKIHS, Dharan.Methods: A descriptive study was conducted  for all women undergoing peripartum hysterectomy in two years from July 2012 to June 2014.Various maternal characteristics  including  demographic data, previous obstetric details, antepartum, intrapartum and postpartum data were  collected and analysed.Results: There were 29 cases of peripartum hysterectomy among 19,539 births in 2 yrs (1.48 per 1000 births). Indications for peripartum hysterectomy were uterine rupture (65.5%), morbid adherence of the placenta (13.8%) and uterine atony (12.9%). Previous caesarean section was identified as independent risk factor with relative risk of 1.8 (95% CI 1.3-2.5, p< 0.003). Maternal morbidity was significant with febrile morbidity and urinary tract injury among the most common complications.Conclusions: Uterine rupture causing severe haemorrhage was the commonest indication for peripartum hysterectomy. Timely intervention reduces the peripartum maternal and perinatal morbidity and mortality.

A Profile of Patients with Molar Pregnancy

Aims: This study was done to determine the incidence, modes of presentation and prognosis of molar pregnancy at B. P. Koirala Institute of Health Sciences.Methods: This was a prospective study done among patients with molar pregnancy admitted at BPKIHS from January 2010 to January 2011. The study was conducted after ethical clearance from Institutional Ethical Review Board of BPKIHS. Written informed consent was taken for enrollment in the study. Baseline information like age, address, race  and patient’s  presenting complaints, period of gestation and serial serum beta human chorionic gonadotropin (βhCG) were collected and analyzed after entering in excel sheet.Results: Total 48 cases of molar pregnancy were diagnosed during the study period. The incidence of molar pregnancy was found to be 5.58 per 1000 deliveries. The most common mode of presentation was per vaginal bleeding i.e. in  64.58% of cases. Majority of the patients were in the age group of 20-34 years (62.5%). Mean time for normalization of βhCG after suction evacuation was 10.19 weeks.Conclusions: Molar pregnancy is a pregnancy related problem which most commonly presents with per vaginal bleeding during first and second trimester. Most of the patients are treated with suction and evacuation but some develop persistent gestational trophoblastic disease.

Technical Note: Experimental results from a prototype high-field inline MRI-linac

PURPOSE

The pursuit of real-time image guided radiotherapy using optimal tissue contrast has seen the development of several hybrid magnetic resonance imaging (MRI)-treatment systems, high field and low field, and inline and perpendicular configurations. As part of a new MRI-linac program, an MRI scanner was integrated with a linear accelerator to enable investigations of a coupled inline MRI-linac system. This work describes results from a prototype experimental system to demonstrate the feasibility of a high field inline MR-linac.

METHODS

The magnet is a 1.5 T MRI system (Sonata, Siemens Healthcare) was located in a purpose built radiofrequency (RF) cage enabling shielding from and close proximity to a linear accelerator with inline (and future perpendicular) orientation. A portable linear accelerator (Linatron, Varian) was installed together with a multileaf collimator (Millennium, Varian) to provide dynamic field collimation and the whole assembly built onto a stainless-steel rail system. A series of MRI-linac experiments was performed to investigate (1) image quality with beam on measured using a macropodine (kangaroo) ex vivo phantom; (2) the noise as a function of beam state measured using a 6-channel surface coil array; and (3) electron contamination effects measured using Gafchromic film and an electronic portal imaging device (EPID).

RESULTS

(1) Image quality was unaffected by the radiation beam with the macropodine phantom image with the beam on being almost identical to the image with the beam off. (2) Noise measured with a surface RF coil produced a 25% elevation of background intensity when the radiation beam was on. (3) Film and EPID measurements demonstrated electron focusing occurring along the centerline of the magnet axis.

CONCLUSIONS

A proof-of-concept high-field MRI-linac has been built and experimentally characterized. This system has allowed us to establish the efficacy of a high field inline MRI-linac and study a number of the technical challenges and solutions.

Assessment of Risk Factors, Feasibility and Acceptability of VIA for Cervical Cancer Screening and Prevention

Aims – To assess feasibility of visual inspection with acetic acid and treatment with cryotherapy for cervical cancer screening and prevention and assess risk factors for cervical cancer in the screened population.Methods – A prospective analysis of all patients enrolled for cervical cancer screening by visual inspection, meeting the eligibility criteria for screening and treatment as per national guidelines 2011 was analyzed form March 2012 to April 2013.Results – A total of 4138 met the eligibility criteria and were counseled for screening, 33 rejected for screening. Out of 4105 screened 241 were visual inspection with acetic acid positive, 211 were treated with cryotherapy, 25 treated with LEEP, 5 rejected to  treatment.  Mean age of patient in year’s ± SD 41.48 ± 9.72. The visual inspection with acetic acidpositivity rate was 5.9 %Conclusion – Single visit approach is a feasible and acceptable form of cervical cancer screening strategy in our population.

Arginyltransferase suppresses cell tumorigenic potential and inversely correlates with metastases in human cancers

Arginylation is an emerging post-translational modification mediated by arginyltransferase (ATE1) that is essential for mammalian embryogenesis and regulation of the cytoskeleton. Here, we discovered that Ate1-knockout (KO) embryonic fibroblasts exhibit tumorigenic properties, including abnormally rapid contact-independent growth, reduced ability to form cell-cell contacts and chromosomal aberrations. Ate1-KO fibroblasts can form large colonies in Matrigel and exhibit invasive behavior, unlike wild-type fibroblasts. Furthermore, Ate1-KO cells form tumors in subcutaneous xenograft assays in immunocompromised mice. Abnormal growth in these cells can be partially rescued by reintroduction of stably expressed specific Ate1 isoforms, which also reduce the ability of these cells to form tumors. Tumor array studies and bioinformatics analysis show that Ate1 is downregulated in several types of human cancer samples at the protein level, and that its transcription level inversely correlates with metastatic progression and patient survival. We conclude that Ate1-KO results in carcinogenic transformation of cultured fibroblasts, suggesting that in addition to its previously known activities Ate1 gene is essential for tumor suppression and also likely participates in suppression of metastatic growth.

Quantitative evaluation of diffusion-weighted imaging techniques for the purposes of radiotherapy planning in the prostate

OBJECTIVE

Diffusion-weighted imaging (DWI) is an important technique for the localization of prostate cancer, and its response assessment during treatment with radiotherapy (RT). However, it has known limitations in terms of distortions and artefacts using standard acquisition techniques. This study evaluates two alternative methods that offer the promise of improved image quality and the potential for more reliable and consistent diffusion data.

METHODS

Three DWI techniques were investigated; single-shot echoplanar imaging (EPI), EPI combined with reduced volume excitation (ZOOMit; Siemens Healthcare, Erlangen, Germany) and read-out segmentation with navigator-echo correction (RESOLVE; Siemens Healthcare). Daily measurements of apparent diffusion coefficient (ADC) value were made in a quality assurance phantom to assess the repeatability of each sequence. In order to evaluate the geometric integrity of these sequences, ten normal volunteers were scanned, and the prostate was contoured to compare its similarity with T2 weighted images.

RESULTS

Phantom ADC values were significantly higher using the standard EPI sequence than those of the other two sequences. Differences were also observed between sequences in terms of repeatability, with RESOLVE and EPI performing better than ZOOMit. Overall, the RESOLVE sequence provided the best agreement for the in vivo data with smaller differences in volume and higher contour similarity than T2 weighted imaging.

CONCLUSION

Important differences have been observed between each of the three techniques investigated with RESOLVE performing the best overall. We have adopted this sequence for routine RT simulation of prostate patients at Liverpool Cancer Therapy Centre.

ADVANCES IN KNOWLEDGE

This work will be of interest to the increasing number of centres wanting to incorporate quantitative DWI in a clinical setting.

Forest biomass flow for fuel wood, fodder and timber security among tribal communities of Jharkhand

The study investigated extraction and consumption pattern of fuel wood, fodder and timber and forest biomass flow for fuel wood, fodder and timber security among tribal communities in Bundu block of Ranchi district in Jharkhand (India). The study is based on personal interviews of the selected respondents through structured interview schedule, personal observations and participatory rural appraisal tools i.e. key informant interviews and focus group discussions carried out in the sample villages, using multi-stage random sampling technique. The study revealed that the total extraction of fuel wood from different sources in villages was 2978.40 tons annum(-1), at the rate of 0.68 tons per capita annum(-1), which was mostly consumed in cooking followed by cottage industries, heating, community functions and others. The average fodder requirement per household was around 47.77 kg day(-1) with a total requirement of 14227.34 tons annum(-1). The average timber requirement per household was computed to be 0.346 m3 annum(-1) accounting for a total timber demand of 282.49 m3 annum(-1), which is mostly utilized in housing, followed by agricultural implements, rural furniture, carts and carriages, fencing, cattle shed/ store house and others. Forest biomass is the major source of fuel wood, fodder and timber for the primitive societies of the area contributing 1533.28 tons annum(-1) (51.48%) of the total fuel wood requirement, 6971.55 tons annum(-1) (49.00%) of the total fodder requirement and 136.36 m3 annum(-1) (48.27%) of the total timber requirement. The forest biomass is exposed to enormous pressure for securing the needs by the aboriginal people, posing great threat to biodiversity and environment of the region. Therefore, forest biomass conservation through intervention of alternative avenues is imperative to keep pace with the current development and future challenges in the area.

Induction of Labor Using Misoprostol With or Without Mifepristone in Intrauterine Deat

Introduction: Rapid expulsion of fetus in intrauterine fetal death is usually requested without any medical grounds for it. So an efficient, safe method for induction of labor is required. The objective of this study is to determine if pre-treatment with mifepristone followed by induction of labor with misoprostol in late intrauterine fetal death is more efficacious. Methods: We conducted a randomized controlled trial in 100 patients in B.P.Koirala Institute of Health Sciences, Nepal from June 2011 to May 2013. Group A women received single oral dose of 200 mg mifepristone, followed by induction with vaginal misoprostol after 24 hours. Group B women were induced only with vaginal misoprostol. In each group, five doses of misoprostol was used four hourly. If first cycle was unsuccessful, after break of 12 hour, second course of misoprostol was started. The primary outcome was a measure of induction to delivery time and vaginal delivery within 24 hours. Secondary outcome was to measure need of oxytocin and complications. Results: Maternal age, parity and period of gestation were comparable between groups. Number of misoprostol dose needed in group A was significantly less than group B. Mann Whitney U test showed, women in group A had significantly earlier onset of labor, however total induction to delivery interval was not significant. In group A, 85.7% delivered within 24 hours of first dose of misoprostol while in group B 70% delivered within 24 hours (p=0.07). More women in Group B required oxytocin. Conclusions: Pretreatment with mifepristone before induction of labor following late intrauterine fetal death is an effective and safe regimen. It appears to shorten the duration of induction to onset of labor.  Keywords:  induction of labor; intrauterine fetal death; mifepristone; misoprostol. 

Eotaxin-1 is involved in parasite clearance during chronic filarial infection

Eosinophil migration as key feature of helminth infection is increased during infection with filarial nematodes. In a mouse model of filariasis, we investigated the role of the eosinophil-attracting chemokine Eotaxin-1 on disease outcome. BALB/c and Eotaxin-1(-/-) mice were infected with the rodent filaria Litomosoides sigmodontis, and parasitic parameters, cellular migration to the site of infection, and cellular responsiveness were investigated. We found increased parasite survival but unaffected eosinophil migration to the site of infection in Eotaxin-1(-/-) mice. Expression of CD80 and CD86 was reduced on eosinophils from Eotaxin-1(-/-) mice after in vitro TLR2 stimulation and exposure to filarial antigen, respectively, suggesting a potential reduced activation state of eosinophils in Eotaxin-1 deficient mice. We further demonstrated that macrophages from Eotaxin-1(-/-) mice produce decreased amounts of IL-6 in vitro, a cytokine found to be associated with parasite containment, suggesting possible mechanisms by which Eotaxin-1 regulates activation of inflammatory cells and thus parasite survival.

Induction of Labor Using Misoprostol With or Without Mifepristone in Intrauterine Death

INTRODUCTION

Rapid expulsion of fetus in intrauterine fetal death is usually requested without any medical grounds for it. So an efficient, safe method for induction of labor is required. The objective of this study is to determine if pre-treatment with mifepristone followed by induction of labor with misoprostol in late intrauterine fetal death is more efficacious.

METHODS

We conducted a randomized controlled trial in 100 patients in B.P.Koirala Institute of Health Sciences, Nepal from June 2011 to May 2013. Group A women received single oral dose of 200 mg mifepristone, followed by induction with vaginal misoprostol after 24 hours. Group B women were induced only with vaginal misoprostol. In each group, five doses of misoprostol was used four hourly. If first cycle was unsuccessful, after break of 12 hour, second course of misoprostol was started. The primary outcome was a measure of induction to delivery time and vaginal delivery within 24 hours. Secondary outcome was to measure need of oxytocin and complications.

RESULTS

Maternal age, parity and period of gestation were comparable between groups. Number of misoprostol dose needed in group A was significantly less than group B. Mann Whitney U test showed, women in group A had significantly earlier onset of labor, however total induction to delivery interval was not significant. In group A, 85.7% delivered within 24 hours of first dose of misoprostol while in group B 70% delivered within 24 hours (p=0.07). More women in Group B required oxytocin.

CONCLUSIONS

Pretreatment with mifepristone before induction of labor following late intrauterine fetal death is an effective and safe regimen. It appears to shorten the duration of induction to onset of labor.

Subcutaneous Sterile Water Injection for Labor Pain: A Randomized Controlled Trial

Aims: This study was done to evaluate the effectiveness of subcutaneous injection of sterile water compared with placebo in reduction of labor pain. Methods: Two hundred and forty pregnant women at term planned for normal vaginal delivery during the first stage of labor were randomized to receive either subcutaneous injection of sterile water (study group, n=120) or normal saline as placebo (control group, n=120) at painful point in lumbosacral region. Pain score was measured before and 10, 45 and 90 minutes after the injections. Main outcome measured was reduction of low back labor pain using visual analogue scale. Results: The mean pain score was equal in both groups prior to the injection. The pain scores were significantly lower among the intervention group compared to the control group at 10, 45, 90 minutes after injection. There was no difference between the two groups with regard to rate of instrumental delivery, cesarean rate and neonatal outcome.Conclusions: The subcutaneous injection of sterile water administered at painful point in lumbosacral area was effective in reducing low back labor pain during labor. DOI: http://dx.doi.org/10.3126/njog.v8i2.9777