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Major depressive episodes (MDEs) are highly recurrent in clinical samples. However, the course of MDEs and predictors of their endurance are unclear in the general youth population.
Methods
We investigated prospective factors associated with enduring MDE (the presence of 12-month DSM-IV MDE at baseline and 1 year using the Composite International Diagnostic Interview–Screening Scales) in 1,833 participants of a 1-year epidemiological youth cohort study in Hong Kong. Multivariable logistic regression models were used to examine the influences of a range of personal and environmental factors.
Results
At baseline, 13.7% participants had MDEs, among whom 21.1% presented enduring MDEs. More severe symptoms of post-traumatic stress disorder (adjusted odds ratio [aOR] = 5.54, confidence interval [CI] = 2.14–14.38), depression (aOR = 3.92, CI = 1.79–8.62), and generalized anxiety (aOR = 2.27, CI = 1.21–4.25) at baseline were among the strongest associated factors for enduring MDE, with trends of associations observed for psychotic-like experiences (aOR = 1.98, CI = 0.98–4.02) and eating disorder symptoms (aOR = 1.88, CI = 0.90–3.95). Among various types of stressors, only dependent stressors at follow-up showed a clear association with enduring MDE (aOR = 4.22, CI = 1.81–9.83). Those with enduring MDE showed poorer functioning and mental health-related quality of life at follow-up, with only 35.6% having sought any psychiatric/psychological help during the past year.
Conclusions
Detecting comorbid symptoms in those with prior MDEs and reducing the impact of dependent stressors may help reduce their long-term implications. Enhancing the accessibility and acceptability of youth-targeted mental health services would also be crucial to improve help-seeking.
Negative symptoms in schizophrenia, particularly motivational deficits, pose significant challenges to treatment and recovery. Despite their profound impact on functional outcomes, these symptoms remain poorly understood and inadequately addressed by current interventions.
Aims
The CHANSS (Characterising Negative Symptoms in Schizophrenia) study aims to dissect the cognitive mechanisms underlying motivational impairments by focusing on three interconnected domains: executive cognition, motivational cognition and meta-cognition.
Method
This large, international, cross-sectional study recruits a heterogeneous sample of patients across illness stages – from first-episode psychosis to treatment-resistant schizophrenia – and uses a comprehensive cognitive battery, clinical scales, self-report measures and computerised cognitive tasks. Four novel tasks assess key processes in motivated behaviour: option generation, reward-based decision-making, risk sensitivity and performance self-evaluation. By incorporating control for secondary influences like depression, psychosis, sedation and illness chronicity, the study seeks to identify distinct cognitive and behavioural subtypes within motivational dysfunction.
Results
CHANSS tests the hypothesis that specific patient profiles exhibit predominant impairments in one or more cognitive domains, which may differentially affect goal-directed behaviour. The study’s design allows exploration of hierarchical relationships between cognitive processes, such as how neurocognitive deficits may cascade to impair motivation and self-evaluation.
Conclusions
Ultimately, CHANSS aims to advance mechanistic understanding of motivational deficits in schizophrenia and pave the way for personalised, targeted interventions. Its findings may inform future clinical trials and contribute to a shift away from one-size-fits-all approaches towards more effective, stratified treatment strategies in schizophrenia.
In sub-Saharan Africa’s endemic areas for urogenital schistosomiasis, male genital schistosomiasis (MGS) can cause significant morbidity. As part of the Hybridization in UroGenital Schistosomiasis investigation, an MGS sub-study examined a cohort of adult men over a calendar year to better ascertain general infection dynamics and putative zoonotic schistosome transmission. During follow-up, demographic, health and socio-economic data were collected through individual questionnaire interviews. Collected urine and semen were analysed using urine filtration, urine and semen microscopy and molecular DNA analyses of semen. Ten participants with reported MGS-associated symptoms had Schistosoma eggs in their urine and semen at 6-month follow-up, with seven at 12 months. Ten out of 11 participants with Schistosoma haematobium eggs on semen microscopy at baseline had persistent infection at 6-month follow-up, together with 6 new participants, giving an MGS prevalence of 84·2% (n = 19). Two also had Schistosoma mattheei eggs co-infection. Four of the 13 participants at 12-month follow-up had S. haematobium eggs in their semen which were persistent at all the time points. Using semen PCR, 14 participants (73·7%) had Schistosoma infection at 6 months, with only 2 participants being infected for first time. Upon DNA analysis, three participants also had hybrid co-infection at this time point. At 12 months, only 6 participants had Schistosoma infection with no hybrids detected. In summary, like S. haematobium and despite praziquantel treatment, both zoonotic and hybrid schistosomes can continue to cause MGS, which pose a further tangible challenge in future management and control measures.
This article investigates medieval medical texts to discover what they have to say about parasites. The principal focus is on intestinal worms found in practica texts written from the 11th to the 15th centuries in Latin in Western Europe. Practica texts deal with illnesses of the human body from head to heel. The chapters on worms occur in discussion of illnesses of the intestines. These practica texts were used in medical education in universities as well as guiding medical practice. Islamicate writings translated from Arabic into Latin influenced western ideas about intestinal worms. Practica texts identify 3 or 4 kinds of intestinal worm depending on size and shape. They are thought to be generated in different parts of the intestine and rectum. Worms are made from matter associated with the humour phlegm which is cold and wet and putrefaction within the body gives life to them. Other parasites of the human body are found close to the skin surface but resemble intestinal worms in the ways they are generated. Areas of argument and dispute arose in learned medical literature. These arguments did not introduce new concepts or research findings but built on analysis of the doctrines of ancient and Islamicate writers. While humoral imbalance is understood to cause worms, recipes from the treatment section usually emphasize the aim of killing and expelling the worms from the body using bitter ingredients like Absinthium (wormwood).
Urogenital schistosomiasis (UGS) caused by zoonotic or hybrid schistosome infection(s) is an emerging public health concern in Malawi, and we describe a 1-year clinical sub-study with 3 inspection time points for female genital schistosomiasis (FGS) upon selecting 86 women with proven UGS. This sub-study was set within a broader 2-year longitudinal ‘Hybridization in UroGenital Schistosomiasis (HUGS)’ investigation. A detailed cervicovaginal examination with a portable colposcope was conducted, examining cervicovaginal lavage (CVL), cervical swab, cervical biopsy and urine with traditional parasitological and molecular diagnostic methods. At baseline, overt FGS by colposcopy was 72.1%, 64.3% by CVL real-time PCR and 51.2% by both colposcopy and CVL-PCR, noting urine-microscopy could often be negative. Human papillomavirus was detected in 31.0% of the cervical swabs, with 8.3% women also FGS positive by colposcopy and real-time PCR. Over the year, FGS prevalence by colposcopy increased by 32.7% during the study to 84.6%, homogenous yellow and grainy sandy patches being very common in the youngest 18–25 age group, where 51.9% were positive. FGS appears widespread locally and we discuss difficulties in its detection without invasive sampling. In addition to the presence of S. haematobium, S. mattheei was noted alongside key concurrent sexually transmitted infections. From our findings, we point out that improved prevention and management of FGS is required, foremost, better availability and regular accessibility to praziquantel treatment is needed. Furthermore, targeted health education, raised community awareness and dovetailing synergistic public health activities within Sexual and Reproductive Health services and local HIV/AIDS programmes could develop an appropriate holistic health intervention package.
Control of female genital schistosomiasis (FGS) has gained significant international attention, driven in part, as a newly appreciated underlying aetiological risk factor for HIV, HPV and cervical dysplasia. Whilst diagnosis and clinical staging of FGS typically relies upon colposcopy, alternative methods of incrimination have grown, particularly upon application of PCR diagnostic assays that detect schistosome DNA within tissue biopsy, genital (self-)swab and/or cervicovaginal lavage (CVL). With regard to the latter, we present novel evidence that microscopy alone of CVL sediments can be sufficient to incriminate FGS and CVL sediment provides an original source of (viable) schistosome eggs and miracidia for later genetic analysis. Upon a pilot examination of 55 adult women from Malawi with previously proven urogenital schistosomiasis by egg-patent urine microscopy, 25.5% (95% CI = 14.7–39.0) were found to have schistosome eggs within CVL, with one woman having more than 50 eggs observed. After praziquantel treatments and upon re-examination one year later, the prevalence of egg-patent CVLs reduced to 14.5% (95% CI = 6.5–26.7) although the same woman again presented with more than 50 observable eggs. Molecular DNA analysis by real-time PCR of extracted DNA from CVL sediments and CVL hatched miracidia (and eggs) revealed the dominance of Schistosoma haematobium within the samples, noting a fifth with Schistosoma mattheei co-infections and the singular presence of a putative S. haematobium × mattheei hybrid miracidium. Viable schistosome eggs shed from cervicovaginal surfaces likely represent a minor environmental transmission route, thus promoting secure menstrual hygiene management is needed.
The Neptune Islands Group and Western Kangaroo Island Marine Parks were declared as part of South Australia’s representative system of Marine protected areas (MPAs) in 2009. Sanctuary zones, located within these MPAs, prohibited commercial fishing in the state’s Northern Zone Rock Lobster Fishery from 2014. In 2022, dedicated surveys were undertaken both inside and outside two of the sanctuary zones to estimate the relative abundance (catch per unit effort; CPUE) and size of southern rock lobster (Jasus edwardsii). Survey results were then compared to estimates of abundance obtained from long-term commercial fishery-dependent data within each area. The legal-size CPUE by weight of lobsters was 389% and 411% higher inside sanctuary zones of the Neptune Islands Group and Western Kangaroo Island, respectively, compared to outside, based on survey data. Survey catch rates inside the two sanctuary zones were also considerably higher than historical catch rates estimated from commercial fishing data. Lobsters inside both sanctuary zones were larger than those outside in terms of mean weight compared to historical estimates. However, surveys recorded similar mean size in lobsters both inside and outside the Neptune Islands Group sanctuary zone, indicating a possible spillover effect of MPA protection. The Northern Zone Rock Lobster Fishery is currently in a biomass rebuilding phase. The results highlight the productivity potential of temperate reef ecosystems within South Australia in terms of southern rock lobster abundances.
Observation medicine in New Zealand has grown considerably in the last decade, driven by the shorter stays in emergency departments health target and the growth of emergency medicine as a specialty. Evidence that the growth of this service has mostly been appropriate and within suggested guidelines, is indicted by most hospitals admitting < 20% of patients to their emergency medicine governed observation unit and most subsequently admitting < 20% of these to an in-patient ward. Average lengths of stay are less than 12 hours and caseloads commonly include toxicology, low-risk chest pain and abdominal pain although the gamut of minor medical and surgical conditions are seen.
Recent changes to US research funding are having far-reaching consequences that imperil the integrity of science and the provision of care to vulnerable populations. Resisting these changes, the BJPsych Portfolio reaffirms its commitment to publishing mental science and advancing psychiatric knowledge that improves the mental health of one and all.
Zonisamide (1-(1,2-Benzoxazol-3-yl)methanesulphonamide) is a sulphonamide derivative with a molecular weight of 212.2 and a molecular formula of C8H8N2O3S.
Fludrocortisone acetate (9α-fluoro-11β,17α,21-trihydroxypregn-4-ene-3,10-dione 21-acetate) is a synthetic adrenal steroid. It has a molecular weight of 422.5 and a molecular formula of C23H31FO6.
Amitriptyline hydrochloride (3-(10,11-dihydro-5H-dibenzo[a,d]cycloheptene-5-ylidene)-N,N-dimethylpropan-1-amine; hydrochloride) has a molecular weight of 313.9 and a molecular formula of C20H23N,HCl. Amitriptyline is usually given as the hydrochloride and doses are expressed in terms of this salt. Amitriptyline hydrochloride 75 mg is equivalent to about 66.3 mg of the base.
Oxybutynin (4-diethylaminobut-2-ynyl 2-cyclohexyl-2-phenylglycolate; 4-(diethylamino)-2-butynyl α-phenylcyclohexaneglycolic acid ester) has a molecular weight of 357.5 and a molecular formula of C22H31NO3.
Nortriptyline hydrochloride (3-(10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5-ylidene)propyl(methyl)amine hydrochloride) is a dibenzocycloheptadiene tricyclic antidepressant with a molecular weight of 299.8 and an empirical formula of C19H21N,HCl.
Droxidopa ( (–)-threo-3-(3,4-dihydroxyphenyl)-l-serine) is an odourless, tasteless, white to off-white crystalline powder, which is slightly soluble to water. It has a molecular weight of 213.2 and a molecular formula of C9H11NO5.
Citalopram (1-[3-(dimethylamino)propyl]-1-(4-fluorophenyl)-3H-2-benzofuran-5-carbonitrile) is a fine white to off-white powder with a molecular weight of 324.4 and an empirical formula of C20H21FN2O. Citalopram 20 mg is equivalent to 24.99 mg citalopram hydrobromide.
Amantadine (tricyclo[3.3.1.1]decan-1-amine, 1-adamantanamine, 1-aminoadamantane) is a white or nearly white crystalline, odourless, and bitter-tasting powder, with a molecular weight of 151.25 and an empirical formula of C10H17N. Amantadine is a tricyclic amine with two available preparations, amantadine hydrochloride, which is given orally, and the salt amantadine sulphate, which is administered either orally or IV.