The central amygdala (CeA) is a crucial modulator of emotional, behavioral, and autonomic functions, including cardiovascular responses. Despite its importance, the specific circuit by which the CeA modulates blood pressure remains insufficiently explored. Our investigations demonstrate that photostimulation of GABAergic neurons in the centromedial amygdala (CeM^GABA), as opposed to those in the centrolateral amygdala (CeL), produces a depressor response in both anesthetized and freely-moving mice. In addition, activation of CeM^GABA axonal terminals projecting to the nucleus tractus solitarius (NTS) significantly reduces blood pressure. These CeM^GABA neurons form synaptic connections with NTS neurons, allowing for the modulation of cardiovascular responses by influencing the caudal or rostral ventrolateral medulla. Furthermore, CeM^GABA neurons targeting the NTS receive dense inputs from the CeL. Consequently, stimulation of CeM^GABA neurons elicits hypotension through the CeM-NTS circuit, offering deeper insights into the cardiovascular responses associated with emotions and behaviors.
Animals ; GABAergic Neurons/physiology* ; Male ; Central Amygdaloid Nucleus/physiopathology* ; Hypotension/physiopathology* ; Mice ; Blood Pressure/physiology* ; Mice, Inbred C57BL ; Solitary Nucleus/physiology* ; Photic Stimulation ; Neural Pathways/physiology*

Objective To investigate the expression of inflammatory factors and brain-derived neurotro-phic factor(BDNF)in the brain hippocampus of Alzheimer's disease(AD)-like mice caused by amyloid β-protein 25-35(Aβ25-35).Methods A total of 40 six-week-old male Kunming mice were taken to construct an AD-like mouse model using bilateral ventricular injection of Aβ25-35,and were divided into the 0 d,7 d,14 d,and 28 d groups for observation,with 10 mice in each group.The Y-maze and new object recognition assay were used to test the learning and memory functions of the mice.The hematoxylin-eosin(HE)staining was used to observe the neuronal damage in the hippocampal region.Immunohistochemical staining was used to detect the expression levels of phosphorylated-tau(p-tau),CD11b and BDNF in hippocampus.ELISA was used to detect the expression levels of inflammatory factors in hippocampus,including interleukin-1β(IL-1β)and tumor necrosis factor-α(TNF)-α,and real-time quantitative reverse transcription PCR(RT-qPCR)and Western blot were used to detect the mRNA and protein expression levels of BDNF.Results Aβ25-35 could impair memory and cognitive function in the mice.Compared with the 0 d group,the neuron number in the hippocampal tissue of mice in the 14 d and 28 d groups was significantly reduced(P<0.05),and the optical density values of p-Tau and CD11b,and expression levels of IL-1β and TNF-α in the hippocampal region of mice in the 14 d and 28 d groups were significantly increased(P<0.05).In addition,compared with the 0 d group,the relative expression levels of BDNF mRNA and protein in the hippocampal tissue of mice were sig-nificantly increased in the 7 d group(P<0.05),while the relative expression levels of BDNF mRNA and pro-tein were significantly decreased in the 14 d and 28 d groups(P<0.05).Conclusion Aβ25-35 may increase the expression of TNF-α,IL-1β and p-tau in hippocampal tissue by activating microglia,which in turn impaired the memory and cognitive functions of mice,and the expression level of BDNF in hippocampal tissue showed a first increase and then a decrease in the injury period.

Carotid atherosclerosis (CAS) is closely associated with the decline of cognitive function in the elderly, which can lead to persistent or progressive cognitive function and neurological dysfunction. Vascular cognitive impairment (VCI) is considered to be an intervenable disease. Studies have shown that CAS is one of the main causes of VCI. Further study on the relationship between CAS and VCI will help to better prevention and treatment of VCI.

Estrogen is an important hormone secreted by the female reproductive system. Its main function is associated with reproduction, growth and development. Studies have shown that estrogen has biological functions such as regulating vasoconstriction, antioxidant stress, anti-inflammatory and neuroprotection, and also affects brain structure and network. Studies have shown that estrogen is closely associated with the occurrence and development of white matter hyperintensities (WMHs). This article reviews the relationship between estrogen and menopausal hormone replacement therapy and WMHs, and their possible pathophysiological mechanisms.

Neutrophil to lymphocyte ratio (NLR) can provide information of local or systemic inflammation and immune status. With the increasing attention to the role of inflammatory and immune factors in vascular cognitive impairment (VCI), it is very important to find new serum inflammatory markers for early identification and intervention of VCI. This article reviews the related research on NLR, VCI and their risk factors, expounds the role of inflammation in the pathogenesis of VCI, and provides help for the diagnosis and prevention of VCI.

ABSTRACT:Objective To explore the application value of psychological nursing in treatment of patients with malignant tumor chemotherapy.Methods A total of 105 patients with malignant tumor chemotherapy were randomly divided into intervention group (52 cases)and control group (53 cases).Control group was treated with routine nursing,on this basis intervention group was added with psychological nursing,including evaluation of psychological condition,establishment of favorable nurse-patient relationship,regular communication,optimization of patients’social sup-port network and relaxation training,etc.Results After nursing,self-rating anxiety scale (SAS) and self-rating depression scale (SDS)scores of both groups decreased significantly,which were significantly lower in intervention group than control group (P <0.01).After nursing,there were no significant differences in role function,emotional function and social function in intervention group when compared with nursing before (P >0.05),but the scores of rest programs of European Organization Research and Treatment of Cancer (EORTC)Quality of Life Questionnaire (QLQ)-30 decreased significantly than nursing before (P <0.01),and intervention group was significantly lower in each score of above programs than control group (P <0.05 or P <0.01).Conclusion Psychological nursing can effectively improve the psychological condition,reduce negative emotions and improve the quality of life in patients with malignant tumor chemotherapy.

ABSTRACT:Objective To explore the application value of psychological nursing in treatment of patients with malignant tumor chemotherapy.Methods A total of 105 patients with malignant tumor chemotherapy were randomly divided into intervention group (52 cases)and control group (53 cases).Control group was treated with routine nursing,on this basis intervention group was added with psychological nursing,including evaluation of psychological condition,establishment of favorable nurse-patient relationship,regular communication,optimization of patients’social sup-port network and relaxation training,etc.Results After nursing,self-rating anxiety scale (SAS) and self-rating depression scale (SDS)scores of both groups decreased significantly,which were significantly lower in intervention group than control group (P <0.01).After nursing,there were no significant differences in role function,emotional function and social function in intervention group when compared with nursing before (P >0.05),but the scores of rest programs of European Organization Research and Treatment of Cancer (EORTC)Quality of Life Questionnaire (QLQ)-30 decreased significantly than nursing before (P <0.01),and intervention group was significantly lower in each score of above programs than control group (P <0.05 or P <0.01).Conclusion Psychological nursing can effectively improve the psychological condition,reduce negative emotions and improve the quality of life in patients with malignant tumor chemotherapy.