The incidence of neurodegenerative diseases, such as Alzheimer’s disease (AD), is continuously growing worldwide, which leads to a heavy economic and societal burden. The lack of a safe and effective causal therapy in cognitive decline is an aggravating factor and requires investigations into the repurposing of commonly used drugs. Sodium-glucose co-transporter 2 inhibitors (SGLT2i) are a new and efficient class of hypoglycemic drugs and, due to their pleiotropic effects, have indications that go beyond diabetes. There is emerging data from murine studies that SGLT2i can cross the blood–brain barrier and may have neuroprotective effects, such as increasing the brain-derived neurotrophic factor (BDNF), reducing the amyloid burden, inhibiting acetylcholinesterase (AChE) and restoring the circadian rhythm in the mammalian target of rapamycin (mTOR) activation. The current study investigates the effect of an SGLT2i and donepezil, under a separate or combined 21-day treatment on AD-relevant behaviors and brain pathology in mice. The SGLT2i canagliflozin was found to significantly improve the novelty preference index and the percentage of time spent in the open arms of the maze in the novel object recognition and elevated plus maze test, respectively. In addition, canagliflozin therapy decreased AChE activity, mTOR and glial fibrillary acidic protein expression. The results also recorded the acetylcholine M1 receptor in canagliflozin-treated mice compared to the scopolamine group. In the hippocampus, the SGLT2i canagliflozin reduced the microgliosis and astrogliosis in males, but not in female mice. These findings emphasize the value of SGLT2i in clinical practice. By inhibiting AChE activity, canagliflozin represents a compound that resembles AD-registered therapies in this respect, supporting the need for further evaluation in dementia clinical trials.
While animal models for schizophrenia, ranging from pharmacological models to lesions and genetic models, are available, they usually mimic only the positive symptoms of this disorder. Identifying a feasible model of chronic schizophrenia would be valuable for studying the possible underlying mechanism and to investigate emerging treatments. Our hypothesis starts from the observation that combining ketamine with isolation could result in long-lasting neuro-psychological deficits and schizophrenia-like features; thus, it could probably be used as the first model of chronic schizophrenia that emphasizes the characteristic of having a multifactorial etiology. By the means of this study, we investigated the effects of ketamine administration combined with isolation in inducing schizophrenia-like symptoms in male albino rats and the brain reactive oxygen species levels. Our results showed that the number of lines crossings in the open field test, the number of open arm entries in the elevated plus maze, and the spontaneous alternations percentage in the Y-maze were significantly lower in the ketamine + isolation group compared to both the control and ketamine + social housing group (p < 0.05). Furthermore, the ketamine + isolation intervention significantly increased the MDA levels and decreased the GPx levels both in the hippocampus and the cortex of the rats. In addition, our premise of creating a model capable of exhibiting both positive and negative symptoms of schizophrenia was also based on adding the aripiprazole treatment to a group of rats. Therefore, we compared the ketamine + social isolation group with the ketamine + social isolation + aripiprazole group in order to attempt to discover if the antipsychotic drug would significantly decrease the potential positive schizophrenia-like symptoms induced by social isolation and ketamine. Given that we obtained significant results, we cautiously presume that this might be an important step in developing our animal model capable of illustrating both positive and negative symptoms of schizophrenia. This study could be a first step towards the creation of a complex animal model capable of exhibiting the multifactorial origin and manifestation of schizophrenia.
In recent years, many healthcare systems, along with healthcare professionals, have provided services in a patient-centered manner, in which patients are key actors in the care process. Encouraging self-care creates responsible patients, but it must be practiced responsibly. This study aims to analyze the tendency towards self-medication for patients from a rural area in Northeastern Romania. Data were collected using a questionnaire, which consisted of 25 questions, that has been developed by the research team. Student’s T test or one-way ANOVA was used, and the reliability of the questionnaire was calculated using Cronbach’s alpha coefficient. Fifty-eight patients agreed to participate and were interviewed. The results of the study suggest that respondents practice self-medication, which they resort to when their condition cannot be treated with natural remedies or herbs and when it impairs their ability to do their daily activities. Self-medication could be explained by the lack of self-care services as well as the trust patients have in the specific treatment. Patients prefer asking the pharmacist for drugs instead of visiting a physician, which could be due to higher accessibility and time-efficiency, while also being prone to stock up on certain medications due to limited access to healthcare.
Athletes are exposed to a tremendous amount of stress, both physically and mentally, when performing high intensity sports with frequent practices, pushing numerous athletes into choose to use ergogenic aids such as caffeine or β-alanine to significantly improve their performance and ease the stress and pressure that is put onto the body. The beneficial or even detrimental effects of these so-called ergogenic aids can be appreciated through the use of numerous diagnostic tools that can analyze various body fluids. In the recent years, saliva samples are gaining more ground in the field of diagnostic as it is a non-invasive procedure, contains a tremendous amount of analytes that are subject to pathophysiological changes caused by diseases, exercises, fatigue as well as nutrition and hydration. Thus, we describe here the current progress regarding potential novel biomarkers for stress and physical activity, salivary α-amylase and salivary cortisol, as well as their use and measurement in combination with different already-known or new ergogenic aids.
Background: Early rebleeding after endoscopic variceal ligation (EVL) represents a serious complication in patients with cirrhosis and is associated with poor short-term outcomes. This study aimed to identify independent predictors of early rebleeding after EVL, with a particular focus on distinguishing factors associated with variceal rebleeding from those related to post-banding ulcer (PBU) bleeding, and to assess predictors of six-week mortality. Methods: We conducted a retrospective cohort study including 217 cirrhotic patients who underwent first emergency EVL for an index episode of esophageal variceal bleeding at a tertiary referral center. Early rebleeding was defined as recurrent upper gastrointestinal bleeding occurring between days 6 and 42 after the index EVL. Results: Early rebleeding occurred in 38/217 patients (17.5%): 27/38 (71.1%) variceal rebleeding and 11/38 (28.9%) PBU rebleeding. In multivariable logistic regression analysis, lower hemoglobin (OR = 0.19, 95% CI: 0.067–0.539, p = 0.002) and a higher albumin–bilirubin (ALBI) grade (OR = 24.94, 95% CI: 1.134–548.342, p = 0.041) were independently associated with increased odds of early variceal rebleeding, whereas a higher number of bands applied during index EVL (OR = 0.52, 95% CI: 0.302–0.896, p = 0.019) was independently associated with reduced odds of rebleeding, with excellent model discrimination (area under the curve [AUC] 0.981; 95% CI: 0.959–1.000). For PBU rebleeding, lower fibrinogen level was the only independent predictor (OR = 0.957, 95% CI: 0.916–1.000, p = 0.047), with strong discriminative performance (AUC 0.945; 95% CI: 0.909–0.982). Model for End-Stage Liver Disease (MELD) score, serum albumin, platelet count, and PBU rebleeding independently predicted six-week mortality. Conclusions: Markers of liver function, along with endoscopic parameters, predict early rebleeding after EVL, emphasizing the importance of the complete assessment of cirrhotic patients for refined risk stratification and tailored post-EVL management.
30 June 2022 in Revista Medico-Chirurgicala a Societatii de Medici Si Naturalisti Din Iasi