Speech Communication

Contains research objectives and reports on two research objectives.U.S. Air Force (Air Force Cambridge Research Center, Air Research and Development Command) under Contract AF19(604)-6102National Science Foundatio

Epidemiology of ectopic pregnancy at Laquintinie Douala hospital (Cameroon): prevalence survey, clinical profile, therapeutic and transfusion issues

Background: Pregnancy is a serious pathology of the first trimester of pregnancy and is the leading cause of death. The objective of our work was to determine the hospital prevalence of ectopic pregnancy (EP), to describe the epidemiological, clinical and therapeutic profile given the often-haemorrhagic context at Laquintinie Hospital in Douala.Methods: We carried out a retrospective study over 10 years, from January 1st, 2007 to December 31st, 2016, using the operating theatre registers and the files of patients admitted during this period for ectopic pregnancy in the gynaecology and obstetrics department of the Laquintinie Hospital in Douala.Results: A total of 905 cases of EP for 32,595 deliveries were recorded, for an overall incidence of 2.8%. EP mainly affected the age group of 25 to 35 (60.6%), single people (57.9%) and housewives (46.6%). The risk factors found were similar to those of cervical cancer, namely multiple sexual partners (80.4%), the precocity of sexual intercourse under 18 years (54.1%) and sexually transmitted infections (52.5%). The symptomatic triad (pelvic pain, amenorrhea and metrorrhagia) was found in 46.1% of cases with a respective order of frequency of 96.9%, 77.3% and 63.6% The management was essentially surgical by radical laparotomy (97% of cases). Two of the 07 deaths were due to religious considerations.Conclusions: EP remains a frequent pathology in our environment with a heavy toll of tubal amputations and death

Benefits of sexual practice during pregnancy: myth or reality? Comparative study and outcome of childbirth in Douala (Cameroon)

Background: Pregnancy is the term used to describe the period in which a foetus develops in the uterus and lasts 40 weeks measured from the last menstrual period. Anatomic and physiologic changes in pregnant women usually make couples to change their emotional and sexual activities that may impact childbirth. There are few studies in our setting that describe the roles of sexual practice during pregnancy and maternal-foetal outcomes of childbirth.Objective of this study aimed at assessing the benefits of sexual practice during pregnancy in a target population and to assess the outcome.Methods: We carried out a comparative cross-sectional study from February 2018 to May 2018, at the maternity of Laquintinie Hospital in Douala. Socio-demographic, obstetric, sexual history in pregnancy, birth and neonatal data were collected using a structured questionnaire. Univariate and multivariate analyses were conducted at a 95% confidence interval.Results: A total of 300 respondents completed study and 69.6% were favourable to sexual intercourse during pregnancy. Induction or augmentation of labour was common in the unfavourable group [OR: 2.52 (1.53-4.15); p=0.004]. Almost one in two participants gave birth by caesarean section and the indications for caesarean section were similar in both groups. Participants without sexual intercourse in pregnancy had a 9-fold increased risk of perineal tears [OR: 8.99 (4.02-10.1); p=0.001] and 5.4-fold risk of cervical tears [OR: 5.44 (2.44-8.73); p=0.0001].Conclusions: Sexual practice in pregnancy appears to be protective against excessive use of oxytocin, perineal and cervical tears

Comparative electroencephalography analysis: marathon runners during tapering versus sedentary controls reveals no significant differences

Introduction Previous studies described various adaptive neuroplastic brain changes associated with physical activity (PA). EEG studies focused mostly on effects during or shortly after short bouts of exercise. This is the first study to investigate the capability of EEG to display PA-induced long-lasting plasticity in runners compared to a sedentary control group. Methods Thirty trained runners and 30 age- and sex-matched sedentary controls (SC) were included as a subpopulation of the ReCaP (Running effects on Cognition and Plasticity) study. PA was measured with the International Physical Activity Questionnaire (IPAQ). Resting-state EEG of the runners was recorded in the tapering phase of the training for the Munich marathon 2017. Power spectrum analyses were conducted using standardized low-resolution electromagnetic tomography (sLORETA) and included the following frequency bands: delta: 1.5–6 Hz, theta: 6.5–8.0 Hz, alpha1: 8.5–10 Hz, alpha2: 10.5–12.0 Hz, beta1: 12.5–18.0 Hz, beta2: 18.5–21.0 Hz, beta3: 21.5–30.0 Hz, and total power (1.5–30 Hz). Results PA (IPAQ) and BMI differed significantly between the groups. The other included demographic parameters were comparable. Statistical nonparametric mapping showed no significant power differences in EEG between the groups. Discussion Heterogeneity in study protocols, especially in time intervals between exercise cessation and EEG recordings and juxtaposition of acute exercise-induced effects on EEG in previous studies, could be possible reasons for the differences in results. Future studies should record EEG at different time points after exercise cessation and in a broader spectrum of exercise intensities and forms to further explore the capability of EEG in displaying long-term exercise-induced plasticity

Speech Communication

Contains research objectives and reports on three research projects.U.S. Air Force (Air Force Cambridge Research Center, Air Research and Development Command) under Contract AF19(604)-6102National Science Foundatio

Distinguishing underlying and surface variation patterns in speech perception

This study examines the relationship between patterns of variation and speech perception using two English prefixes: “in-”/“im-” and “un-”. In natural speech, “in-” varies due to an underlying process of phonological assimilation, while “un-” shows a pattern of surface variation, assimilating before labial stems. In a go/no-go lexical decision experiment, subjects were presented a set of “mispronounced” stimuli in which the prefix nasal was altered (replacing [n] with [m], or vice versa), in addition to real words with unaltered prefixes. No significant differences between prefixes were found in responses to unaltered words. In mispronounced items, responses to “un-” forms were faster and more accurate than to “in-” forms, although a significant interaction mitigated this effect in labial contexts. These results suggest the regularity of variation patterns has consequences for the lexical specification of words, and argues against radical underspecification accounts which argue for a maximally sparse lexicon

Differential expression of colon cancer associated transcript1 (CCAT1) along the colonic adenoma-carcinoma sequence

Cataloged from PDF version of article.Background: The transition from normal epithelium to adenoma and, to invasive carcinoma in the human colon is associated with acquired molecular events taking 5-10 years for malignant transformation. We discovered CCAT1, a non-coding RNA over-expressed in colon cancer (CC), but not in normal tissues, thereby making it a potential disease-specific biomarker. We aimed to define and validate CCAT1 as a CC-specific biomarker, and to study CCAT1 expression across the adenoma- carcinoma sequence of CC tumorigenesis. Methods: Tissue samples were obtained from patients undergoing resection for colonic adenoma(s) or carcinoma. Normal colonic tissue (n = 10), adenomatous polyps (n = 18), primary tumor tissue (n = 22), normal mucosa adjacent to primary tumor (n = 16), and lymph node(s) (n = 20), liver (n = 8), and peritoneal metastases (n = 19) were studied. RNA was extracted from all tissue samples, and CCAT1 expression was analyzed using quantitative real time-PCR (qRT-PCR) with confirmatory in-situ hybridization (ISH). Results: Borderline expression of CCAT1 was identified in normal tissue obtained from patients with benign conditions [mean Relative Quantity (RQ) = 5.9]. Significant relative CCAT1 up-regulation was observed in adenomatous polyps (RQ = 178.6 +/- 157.0; p = 0.0012); primary tumor tissue (RQ = 64.9 +/- 56.9; p = 0.0048); normal mucosa adjacent to primary tumor (RQ = 17.7 +/- 21.5; p = 0.09); lymph node, liver and peritoneal metastases (RQ = 11,414.5 +/- 12,672.9; 119.2 +/- 138.9; 816.3 +/- 2,736.1; p = 0.0001, respectively). qRT-PCR results were confirmed by ISH, demonstrating significant correlation between CCAT1 up-regulation measured using these two methods. Conclusion: CCAT1 is up-regulated across the colon adenoma-carcinoma sequence. This up-regulation is evident in pre-malignant conditions and through all disease stages, including advanced metastatic disease suggesting a role in both tumorigenesis and the metastatic process

Water Dynamics at Protein Interfaces: Ultrafast Optical Kerr Effect Study

The behavior of water molecules surrounding a protein can have an important bearing on its structure and function. Consequently, a great deal of attention has been focused on changes in the relaxation dynamics of water when it is located at the protein surface. Here we use the ultrafast optical Kerr effect to study the H-bond structure and dynamics of aqueous solutions of proteins. Measurements are made for three proteins as a function of concentration. We find that the water dynamics in the first solvation layer of the proteins are slowed by up to a factor of 8 in comparison to those in bulk water. The most marked slowdown was observed for the most hydrophilic protein studied, bovine serum albumin, whereas the most hydrophobic protein, trypsin, had a slightly smaller effect. The terahertz Raman spectra of these protein solutions resemble those of pure water up to 5 wt % of protein, above which a new feature appears at 80 cm–1, which is assigned to a bending of the protein amide chain

Patient and public involvement in palliative care research: What works, and why? A qualitative evaluation.

BACKGROUND: Public involvement is increasingly considered a prerequisite for high-quality research. However, involvement in palliative care is impeded by limited evidence on the best approaches for populations affected by life-limiting illness. AIM: To evaluate a strategy for public involvement in palliative care and rehabilitation research, to identify successful approaches and areas for improvement. DESIGN: Co-produced qualitative evaluation using focus groups and interviews. Thematic analysis undertaken by research team comprising public contributors and researchers. SETTING/PARTICIPANTS: Researchers and public members from a palliative care and rehabilitation research institute, UK. RESULTS: Seven public members and 19 researchers participated. Building and maintaining relationships, taking a flexible approach and finding the 'right' people were important for successful public involvement. Relationship building created a safe environment for discussing sensitive topics, although public members felt greater consideration of emotional support was needed. Flexibility supported involvement alongside unpredictable circumstances of chronic and life-limiting illness, and was facilitated by responsive communication, and opportunities for in-person and virtual involvement at a project- and institution-level. However, more opportunities for two-way feedback throughout projects was suggested. Finding the 'right' people was crucial given the diverse population served by palliative care, and participants suggested more care needed to be taken to identify public members with experience relevant to specific projects. CONCLUSION: Within palliative care research, it is important for involvement to focus on building and maintaining relationships, working flexibly, and identifying those with relevant experience. Taking a strategic approach and developing adequate infrastructure and networks can facilitate public involvement within this field.The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study was funded by the National Institute for Health Research (NIHR) Collaboration for Leadership and Applied Health Research and Care South London (NIHR CLAHRC South London) Involvement Activity Funding and Research Capability Funding at King’s College Hospital NHS Foundation Trust. Support was also provided by the NIHR Applied Research Collaboration (ARC) South London at King’s College Hospital Foundation Trust. LJB is supported through a National Institute for Health Research (NIHR) Career Development Fellowship (CDF-2017-10-009). CE is funded by HEE/NIHR Senior Clinical Lectureship. The views expressed in this publication are those of the author(s) and not necessarily those of the funders, the NHS, the National Institute for Health Research or the Department of Health