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AIMS Chronic stress leads to the development of male sexual problems such as ejaculatory dysfunctions. The rhythmic contractions of vas deferens (VD) play an important role on the ejaculatory process. In the current study, we investigated whether infliximab (IFX) treatment has any beneficial effects on possible alterations in contractility of VD obtained from rats exposed to unpredictable chronic mild stress (UCMS). PLX4032 inhibitor MATERIALS AND METHODS The rats were randomly divided into four groups control, control+IFX, UCMS and UCMS+IFX. IFX (5 mg/kg/week, i.p.) was administrated for 5 weeks during UCMS period. Depressive like-behaviors were evaluated using locomotor activity, forced swimming and sucrose consumption and preference tests. The blood was collected for serum biochemical determinations. VD tissues were harvested for functional studies and, measurements of oxidative stress, inflammatory and apoptotic biomarkers. KEY FINDINGS We observed increased serum concentration of corticosterone and depressive-like behaviors in rats exposed to UCMS. In VD tissues of UCMS-exposed rats, noradrenaline- and adenosine triphosphate (ATP)-induced contractile responses significantly enhanced and electrical field stimulation (EFS)-induced contractile responses markedly decreased. UCMS exposure induced inflammation, oxidative stress and apoptosis in VD. However, IFX treatment significantly improved all the aforementioned parameters. SIGNIFICANCE The results of the present study revealed that chronic stress-induced depression caused VD dysfunction by promoting inflammation and oxidative stress in VD. IFX protected against VD dysfunction through its anti-inflammatory and antioxidant effects. BACKGROUND Pulmonary arterial hypertension (PAH) is a severe pulmonary vascular disease characterized by unbalanced proliferation and apoptosis of pulmonary arterial smooth muscle cells (PASMCs). Prohibitin 1 (PHB1) is known for its significant anti-proliferative activity. However, the role of PHB1 in PASMCs and PAH have not been elucidated. METHODS Monocrotaline (MCT 60 mg/kg) was used to build a PAH model in SD rats. Right ventricular systolic pressure (RVSP) and right ventricle (RV) hypertrophy were measured. Morphology of pulmonary vessels was observed by Hematoxylin-Eosin (HE) staining. Expression of PHB1 in pulmonary arteries and PASMCs was determinated by immunoblot and immunofluorescence. Cell proliferation was detected by CCK8 and EDU when PASMCs were stimulated by PDGF-BB (20 ng/mL). Furthermore, siRNA for PHB1 and Akt inhibitor were conducted to investigate the mechanism behind the role of PHB1 and AKT signaling pathway in PASMCs proliferation and apoptosis. RESULTS The protein expression of PHB1 in PAH rats lung tissue was significantly up-regulated accompanied by elevated RVSP and enhanced RV hypertrophy. Immunohistochemistry showed that PHB1 was mainly localized in the pulmonary vascular smooth muscle layer. PDGF-BB significantly up-regulated the expression of PHB1 in rat primary PASMCs in a time- and dose-dependent manner. After PHB1 knock down, PASMCs proliferation was significantly suppressed while apoptosis was significantly recovered. Meanwhile the level of proliferating cell nuclear antigen (PCNA) and P-Akt were significantly down-regulated. Perifosine (Akt inhibitor) also significantly inhibit proliferation of PASMCs. CONCLUSION PHB1 contributes to pulmonary vascular remodeling by accelerating proliferation of PASMCs which involves AKT phosphorylation. Gastric cancer (GC) is responsible for high morbidity and mortality worldwide. This cancer claims fifth place among other cancers. There are a number of factors associated with GC development such as alcohol consumption and tobacco smoking. It seems that genetic factors play significant role in GC malignancy and progression. MicroRNAs (miRs) are short non-coding RNA molecules with negative impact on the expression of target genes. A variety of studies have elucidated the potential role of miRs in GC growth. Investigation of molecular pathways has revealed that miRs function as upstream modulators of Wnt signaling pathway. This signaling pathway involves in important biological processes such as cell proliferation and differentiation, and its dysregulation is associated with GC invasion. At the present review, we demonstrate that how miRs regulate Wnt signaling pathway in GC malignancy. OBJECTIVES Advance care planning in young-onset dementia largely remains a blind spot within current literature. This study aimed to explore the engagement in and the conceptualization of advance care planning from the perspective of family caregivers of persons with young-onset dementia and to identify potential similarities and differences in this area between American and Belgian persons with young-onset dementia and their family caregivers. DESIGN An exploratory qualitative study. SETTING AND PARTICIPANTS We purposively sampled adult family caregivers of persons with young-onset dementia; our respondents were 13 American and 15 Belgian caregivers with varying familial relationships to the patient. METHODS We conducted 28 semi-structured interviews, using the same interview guide for American and Belgian respondents. Verbatim transcripts were analysed through the method of constant comparative analysis. RESULTS Important similarities between American and Belgian respondents were restricted knowledge of advance care planning, limited communication about advance directives, and their recommendation for professionals to timely initiate advance care planning. Major differences were attention paid to those end-of-life decisions depicted in the legislature of their respective countries, American caregivers placed higher emphasis on financial planning than their Belgian peers, and, in the case of consulting professionals for advance directives, American caregivers turned to lawyers, whereas Belgian caregivers relied on physicians. CONCLUSIONS AND IMPLICATIONS Specific nuances and challenges in terms of advance care planning in young-onset dementia arise from a particular societal and legal context on the one hand, and from patients' and caregivers' younger age on the other. Professionals' awareness of and responsiveness to these specificities could facilitate the advance care planning process. Based on our interpretation of results, several recommendations for practice and policy are made.
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