Human anelloviruses (TTV, TTMDV and TTMV) are at high prevalence all across the globe, having also a controversial disease-inducing potential. This study aimed to estimate the prevalence of anelloviral DNA in the Romanian human population and to investigate the association of infections with common pathologies in Romanian population. After informed consent, blood samples were collected from 2000 subjects represented by: clinically healthy individuals (n = 701) and a group of patients with pathologies linked to low grade inflammation or alteration of carbohydrate metabolism (n = 1299). All samples were analysed for the presence of TTV, TTMDV and TTMV DNA by hemi-nested PCR. The prevalence of TTV, TTMDV and TTMV in the studied population was 68.2, 54.4%, respectively 40.1%, lower than the recent reports from other geographic regions. The three viral species were significantly more frequent in the group of patients compared to the healthy subjects and were associated with type 2 diabetes mellitus. The presence of anelloviral DNA was also associated with medical procedures (e.g. haemodialysis/transfusions, surgical procedures) and previous hepatitis A virus infection. Lifestyle choices related to alcohol consumption, smoking, physical activity and living environment were not associated with differences in distribution of the three viruses. Further evidence is needed to establish a correlation between infection with human anelloviruses and a pathology or group of pathologies.

This study examines the effects of metformin on brain functions focusing on the variability of the results reported in the literature. While some studies suggest that metformin may have neuroprotective effects in diabetic patients, others report an insignificant impact of metformin on cognitive function, or even a negative effect. We propose that this inconsistency may be due to intrinsic cellular-level variability among individuals, which we term “biovariance”. Biovariance persists even in demographically homogeneous samples due to complex and stochastic biological processes. Additionally, the complex metabolic actions of metformin, including its influence on neuroenergetics and neuronal survival, may produce different effects depending on individual metabolic characteristics.

Hypothalamic hamartomas (HH) are infrequent, non-neoplastic malformations of the hypothalamus with heterogeneous clinical features, with symptoms including gelastic seizures, central precocious puberty, and cognitive or behavioral deficits. This narrative review synthesizes current knowledge regarding the etiology, clinical manifestations, diagnostic advances, and therapeutic approaches for HH. Genetic insights highlight the role of postzygotic mosaicism and dysregulated Sonic Hedgehog signaling in HH development, emphasizing their relevance in potential therapeutic strategies. Diagnostic modalities such as MRI, PET, and SEEG are pivotal in identifying and characterizing HHs, enabling precise treatment planning. Therapeutic interventions span pharmacological, surgical, and neuromodulatory approaches. While surgical approaches, such as transcallosal resection or stereotactic radiosurgery, can offer considerable seizure control, newer modalities, such as laser interstitial laser thermal therapy (LITT) as well as stereotactic radiofrequency thermocoagulation, prioritize minimizing both cognitive and behavioral sequelae. The use of pharmacologic management and neuromodulation provides adjuvant benefits, specifically in drug-resistant epilepsy; despite progress, limitations still remain, including variability of outcomes and not enough long-term studies. This review underscores the need for multidisciplinary care and advanced research to optimize outcomes and improve the quality of life for patients with HH.

" Stroke has a significant prevalence in Romania. The predisposition for this multifactorial disease is partially known. The aim of this study is to investigate the predisposition for stroke in Romanian population. Material and methods. We selected cases with recent ischemic stroke (n=100) and healthy control subjects (n=100). The AGTR1 A1166C (rs5186) polymorphism was genotyped by restriction of amplicons with Dde I endonuclease. Results. Active cigarette smoking (O.R. =6.92, p=0.0001) or presence of the AT1R C variant (O.R. =6.69, p=0.0006) in overweight or obese women significantly increase the risk for ischemic stroke. The diagnosis of stroke (71.5 vs 68 years old) or T2DM (63.39 vs 60.77 years old) was recorded at an older age in women compared to men (p<0.05). Obesity considered independent (O.R. =4.22, p<0.05) or in association with T2DM (O.R. = 10.16, p=0.0002) confers the highest risk of stroke when compared to women. Conclusions. Obesity in association with T2DM confers the highest risk of stroke for men when compared to women. Active cigarette smoking or AT1R C variant significantly increase the risk for stroke in women with a high BMI compared with controls. Keywords: stroke, AT1R, BMI, cigarette smoking"

Hypothalamic hamartomas (HHs) are rare, non-neoplastic malformations of the hypothalamus with heterogeneous clinical presentations, including gelastic seizure, central precocious puberty, and cognitive or behavioural impairments. This narrative review synthesizes current knowledge regarding the etiology, clinical manifestations, diagnostic advances, and therapeutic approaches for HH. Genetic insights highlight the role of postzygotic mosaicism and dysregulated Sonic Hedgehog signalling in HH development, emphasizing their relevance in potential therapeutic strategies. Diagnostic modalities such as MRI, PET, and SEEG play pivotal roles in identifying and characterizing HHs, enabling precise treatment planning. Therapeutic interventions span pharmacological, surgical, and neuromodulatory approaches. While surgical techniques such as transcallosal resection or stereotactic radiosurgery offer substantial seizure control, newer modalities like laser interstitial thermal therapy (LITT) and stereotactic radiofrequency thermocoagulation prioritize minimizing cognitive and behavioural sequelae. Pharmacological management and neuromodulation offer adjunctive benefits, particularly in drug-resistant epilepsy despite advancements, limitations persist, including outcome variability and insufficient long-term studies. This review underscores the need for multidisciplinary care and advanced research to optimize outcomes and improve the quality of life for patients with HH.

The study examines the effects of metformin on brain functions focusing on the variability of results reported in the literature. While some studies suggest that metformin may have neuroprotective effects in diabetic patients, others report an insignificant impact of metformin on cognitive function, or even a negative effect. We propose that this inconsistency may be due to intrinsic cellular-level variability among individuals, which we term “biovariance”. Biovariance persists even in demographically homogeneous samples due to complex and stochastic biological processes. Additionally, the complex metabolic actions of metformin, including AMPK activation and mTOR inhibition, may produce different effects depending on individual metabolic characteristics.