by Nailya Ibragimova, Arailym Aitynova, Seitzhan Turganbay, Marina Lyu, Alexandr Ilin, Tamari Gapurkhaeva, Galina Ponomareva, Karina Vassilyeva, Diana Issayeva, Amirkan Azembayev, Serzhan Mombekov, Aralbek Rsaliyev, Nurgul Sikhayeva, Yergali Abduraimov, Saki Raheem
Iodine-based antiseptics are essential in wound care but are often limited by cytotoxicity, instability, and rapid iodine release. Novostron is a novel polymer–iodine complex incorporating dextrin, polyvinyl alcohol, and metal ions, designed to enable controlled iodine release. Structural integrity and composition were confirmed by ¹H and 13C NMR spectroscopy and physicochemical analysis, indicating a molecular weight of ~9500 g/mol, a pH of 4.23, and an iodine content of 8.13%. Pharmacokinetic analysis in rabbits demonstrated that following a single dermal application, systemic iodine absorption was minimal, with peak blood iodine concentrations remaining within physiological limits and rapid elimination within 24 hours. Evaluation of thyroid function revealed no significant changes in serum T₃, T₄, or TSH levels compared with those of the controls, confirming that topical application of Novostron does not disrupt thyroid homeostasis. In compliance with OECD guidelines in rabbits, guinea pigs, and rats, Novostron showed no signs of dermal irritation, skin sensitization, or systemic toxicity (LD₅₀ > 2000 mg/kg). In a rat cotton pellet granuloma model, Novostron significantly reduced the inflammatory mass (23.65% inhibition), supporting its anti-inflammatory potential. In a murine burn model, Novostron accelerated wound contraction (25.95% at day 10), increased epidermal thickness, and enhanced collagen deposition (~44%), outperforming controls and matching or exceeding betadine. These findings suggest that Novostron promotes tissue repair by modulating inflammation. Overall, Novostron demonstrated a favourable preclinical safety and efficacy profile, and its polymer–iodine composition, which enables controlled release and localized activity highlights its potential as a promising topical therapeutic. However, the study was limited to animal models and short-term observation; further long-term and clinical investigations are needed to confirm its translational potential in human wound healing.Mycoplasma genitalium, Chlamydia trachomatis, Neisseria gonorrhoeae and Trichomonas vaginalis are sexually transmitted pathogens that are highly prevalent in developing countries and are strongly associated with pregnancy complications. In Chad, screening for these sexually transmitted infections (STIs) in pregnant women is based solely on patient-reported symptoms, even though these infections are frequently asymptomatic. This study aims to determine the prevalence of M. genitalium, C. trachomatis, N. gonorrhoeae and T. vaginalis infections, as well as their associated risk factors.
In this cross-sectional study, we recruited pregnant women attending antenatal clinics at seven hospitals in N’Djamena. Endocervical swabs were collected, and DNA was extracted. Infections were diagnosed using PCR. Risk factors were identified using a structured questionnaire, and associations were assessed using logistic regression.
A total of 525 pregnant women were enrolled, of whom 78.5% resided in urban areas, with a mean age of 25.16±5.54 years. Overall, 23.99% of the study population were diagnosed with at least one STI. The individual prevalence of M. genitalium, N. gonorrhoeae, C. trachomatis and T. vaginalis infections was 13.33%, 5.14%, 0.95% and 4.57%, respectively. Coinfections were low, with M. genitalium-T. vaginalis at 0.95%, M. genitalium-N. gonorrhoeae at 0.38% and other combinations at 0.19% each. Women residing in rural areas had nearly two times the odds of M. genitalium infection compared with urban residents (OR=1.98), indicating a higher risk. AgeM. genitalium infection (OR=1.71) were also associated with significantly increased risk.
This study demonstrates a high prevalence of STIs among pregnant women in Chad, underscoring the need for systematic screening rather than solely relying on syndromic management.
This study aimed to estimate the prevalence of depression and anxiety and associated risk factors among non-communicable diseases (NCD) clinic attendees in rural Rwanda.
Cross-sectional.
44 health centres in three rural districts in Rwanda.
Adults aged 18 years and older with a clinical diagnosis of diabetes, hypertension and/or asthma, who were attending a follow-up appointment during the study period (n=595).
Primary outcome measures were depression (measured by Patient Health Questionnaire-9) and anxiety (measured by Generalised Anxiety Disorder-7). Explanatory measures included sociodemographic and behavioural risk factors associated with depression and anxiety.
Of 595 participants, 265 (44.5%) had depression (95% CI: 40.5% to 48.6%) and 202 (33.9%) had anxiety (95% CI: 30.1% to 37.9%). Comorbidity of depression and anxiety was found in 137 participants (23%). Participants with no formal education had significantly higher odds of reporting depression and anxiety compared with those with primary and secondary/higher education (adjusted OR (aOR)=2.08; 95% CI=1.27 to 3.33, p=0.004, aOR=5.00; 95% CI=1.12 to 25.00, p=0.035, respectively). In addition, participants who were unemployed were more likely to report depression and anxiety (aOR=3.03; 95% CI=1.62 to 5.67, p
The overall prevalence of depression and anxiety was found to be significantly high among the study participants. The risk factors that were associated with depression and anxiety included level of education, district of residence, employment status and past trauma exposure. The findings emphasise the need for integrating mental health screening into NCD care, district-specific interventions, employment support services and trauma-focused care.
Ethiopia, the second most populous country in Africa, faces significant demographic transitions, with fertility rates playing a central role in shaping economic and healthcare policies. Family planning programmes face challenges due to funding limitations. The recent suspension of the US Agency for International Development funding exacerbates these issues, highlighting the need for accurate birth forecasting to guide policy and resource allocation. This study applied time-series and advanced machine-learning models to forecast future birth trends in Ethiopia.
Secondary data from the Ethiopian Demographic and Health Survey from 2000 to 2019 were used. After data preprocessing steps, including data conversion, filtering, aggregation and transformation, stationarity was checked using the Augmented Dickey-Fuller (ADF) test. Time-series decomposition was then performed, followed by time-series splitting. Seven forecasting models, including Autoregressive Integrated Moving Average, Prophet, Generalised Linear Models with Elastic Net Regularisation (GLMNET), Random Forest and Prophet-XGBoost, were built and compared. The models’ performance was evaluated using key metrics such as root mean square error (RMSE), mean absolute error (MAE) and R-squared value.
GLMNET emerged as the best model, explaining 77% of the variance with an RMSE of 119.01. Prophet-XGBoost performed reasonably well but struggled to capture the full complexity of the data, with a lower R-squared value of 0.32 and an RMSE of 146.87. Forecasts were made for both average monthly births and average births per woman over a 10-year horizon (2025–2034). The forecast for average monthly births indicated a gradual decline over the projection period. Meanwhile, the average births per woman showed an increasing trend but fluctuated over time, influenced by demographic shifts such as changes in fertility preferences, age structure and migration patterns.
This study demonstrates the effectiveness of combining time-series models and machine learning, with GLMNET and Prophet XGBoost emerging as the most effective. While average monthly births are expected to decline due to demographic transitions and migration, the average births per woman will remain high, reflecting persistent fertility preferences within certain subpopulations. These findings underscore the need for policies addressing both population trends and sociocultural factors.
This study aimed to assess high-risk human papillomavirus (HPV) infection (HPV 16/18) and its determinants among women in East Gojjam Zone, Northwest Ethiopia.
An institutional-based cross-sectional study.
The study was conducted among 337 women screened for cervical cancer in two hospitals in East Gojjam Zone from February to April 2021 gregoriean calander.
The prevalence of HPV infection was 14.2% (95% CI: 10.7% to 18.1%). The mean age of the respondents was 36.7±9.1 years. Women in the age group of 55–65 years (adjusted OR (AOR)=7.91, 95% CI: 1.95 to 32.09), early initiation of sexual intercourse (AOR=5.36, 95% CI: 1.58 to 18.13), history of sexually transmitted infection (STI) (AOR=3.52, 95% CI: 1.27 to 9.72), HIV positive status (AOR=6.8, 95% CI: 1.99 to 23.54) and number of lifetime sexual partners (AOR=4.37, 95% CI: 1.15 to 17.3) were important independent factors associated with the presence of oncogenic HPV infection.
We found a relatively low prevalence of high-risk HPV infection. Age, early initiation of sexual intercourse at less than 18 years, history of STI, being HIV seropositive and multiple sexual partners were important factors for high-risk HPV infection. Women aged >46 years, women with early initiation of sex, a history of STI, being HIV positive and a history of multiple sexual partners should be encouraged to be screened and vaccinated for HPV infection. Wider-ranging studies are also needed in HPV-infected women in association with the cervical lesion.
Rev Enferm;39(5): 8-13, 2016 May. . [Artículo]