There are many trillions of bacteria in the gastrointestinal microbiome (GM). Their ecological dysregulation can contribute to the development of certain neurodegenerative diseases, including Alzheimer's disease (AD). AD is common dementia and its incidence is increasing year by year. However, the relationship between GM and AD is unclear. Therefore, this review discusses the relationship between GM and AD, elaborates on the possible factors that can affect this relationship through the inflammation of the brain induced by blood−brain damage and accumulation of amyloid deposit, and proposes feasible ways to treat AD through GM-related substances, such as probiotics, Mega-3, and gut hormones, including their shortcomings as well.

Decubitus ulcers are a common spinal cord injury (SCI) complication that puts patients' lives in danger and has emerged as a more prevalent issue in modern clinical rehabilitation and care. Decubitus ulcers in humans can currently be treated in a number of different ways, but there are fewer studies on how to treat and care for decubitus ulcers in macaques. To treat a 20‐year‐old adult male macaque monkey with SCI and decubitus ulcers after a quarter transection of the thoracic spinal cord, a number of scientific care procedures and pharmaceutical treatments, such as dietary changes and topical or intravenous administration of medication, were carried out and continuously monitored in real‐time. In comparison to the untreated group, we observed a significant improvement in decubitus wound healing in the macaques. In this article, we provide a good protocol for decubitus ulcer care after SCI and suggest that future experimental animal modeling needs to focus on issues such as care for postoperative complications.

Hypoxic ischemic encephalopathy (HIE) is an important cause of neonatal death and disability, which can lead to long-term neurological and motor dysfunction. At present, the treatment mainly focuses on the symptomatic treatment in the acute phase and rehabilitation after injury, but the effect is not satisfactory, and more effective methods are urgently needed. Due to the widespread use of inhalation anesthetics in surgery, it has been found that iso urane (ISO) preconditioning may have a positive effect on neuroprotection. The aim of this study was to investigate the effects of ISO preconditioning on neurological function and behavior in HIE rats. MethodsNeonatal rats were used to create hypoxic-ischemic (HI) model by ligating the right common carotid artery at 7 days and then in a hypoxia chamber. The effects of anesthetic drugs on neurological function after one hour of ISO preconditioning were assessed after modeling by Morris water maze(MWM), Ymaze, and rotarod tests at one month. Thereafter, samples were taken at 1 and 42 days for Nissl staining and Hematoxylin-Eosin (HE) staining to observe neuronal number and histomorphology changes. The relationship of behaviour and morphology tests were measured. ResultsIschemia and hypoxia could induce neuronal injury, neurological dysfunction and severe long-term motor function injury. Histological staining and behavioural evaluations were performed to elucidate the pathological changes and neurobehavioural variation after ISO treatment. We found ISO administration signi cantly reduced the infarct volume of brain tissues and improved the autonomous activities of neonatal rats, ISO preconditioning signi cantly reduced neuronal apoptosis induced by HI, reduced cerebral infarction volume, improved histopathological damage of nerve cells, improved long-term cognitive function, and attenuated HI-induced Nissl total cells to reduce and reduce long-term spatial memory impairment caused by hypoxia-ischemia during the maturation of injured brain. ConclusionISO preconditioning can protect the brain injury and promote the recovery of neurological function in neonatal rats with HIE, which may be through inhibiting the neuronal cell death in the cortex and hippocampus after HI.

Spinal cord injury (SCI) animal models have been widely created and utilized for repair therapy research, but more suitable experimental animals and accurate modeling methodologies are required to achieve the desired results. In this experiment, we constructed an innovative dorsal 1/4 spinal cord transection macaque model that had fewer severe problems, facilitating postoperative care and recovery. In essence, given that monkeys and humans share similar genetics and physiology, the efficacy of this strategy in a nonhuman primate SCI model basically serves as a good basis for its prospective therapeutic use in human SCI.

Nowadays, with the development of the social health care system, there is an increasing trend towards an aging society. The incidence of Alzheimer's disease (AD) is also on the rise. AD is a kind of neurodegenerative disease that can be found in any age group. For years, scientists have been committing to discovering the cause of AD. DNA methylation is one of the most common epigenetic mechanisms in mammals and plays a vital role in the pathogenesis of several diseases, such as tumors. Studying chemical changes in the epigenome, or DNA can help us understand the effects of our environment and life on diseases, such as smoking, depression, and menopause, which may affect people's chances of developing Alzheimer's or other diseases. Recent studies have identified the genes ANK1, RHBDF2, ABCA7, and BIN1, linking DNA methylation to AD. This review focuses on elucidating the relationship between DNA methylation and the pathogenesis of AD and provides an outlook on possible targeted therapeutic modalities.