Adult neurogenesis can only be observed in some specific brain regions. One of these areas is the dentate gyrus of the hippocampal formation. The progenitor cells located in the subgranular layer of the dentate gyrus ...Adult neurogenesis can only be observed in some specific brain regions. One of these areas is the dentate gyrus of the hippocampal formation. The progenitor cells located in the subgranular layer of the dentate gyrus proliferate, differentiate, and give rise to young neurons that can become integrated into existing neuronal circuits. Under physiological conditions, hippocampal neurogenesis is linked to hippocampal-dependent learning, whereas deficits in adult hippocampal neurogenesis have been shown to correlate with disturbances in spatial learning and memory. This review summarizes the phenomenon of adult hippocampal neurogenesis and the use of suitable markers for the investigation of adult hippocampal neurogenesis. In addition, we focused on the disturbances in neurogenesis that can be seen in depression. Interestingly, several antidepressants have been found to be capable of increasing the rate of hippocampal neurogenesis. Based on that, it can be speculated that factors, which directly or indirectly increase the rate of hippocampal neurogenesis, may be helpful in the treatment of depression.展开更多
The classical renin-angiotensin system（RAS） in the body has been studied intensively in the last decades, since it is known that this system is involved in the regulation of blood pressure. Since nearly all members ...The classical renin-angiotensin system（RAS） in the body has been studied intensively in the last decades, since it is known that this system is involved in the regulation of blood pressure. Since nearly all members of the classical RAS have also been identified within the brain in the last decades and due to the existence of the blood-brain barrier, a RAS within the brain（bRAS） that is largely independent from the peripheral RAS has been postulated. All members of the angiotensin family as e.g., angiotensin II, angiotensin IV and angiotensin II（1-7） along with the respective receptors（e.g., angiotensin II receptor type 1（AT1）, angiotensin II receptor type 2（AT2）, angiotensin IV receptor（AT4）, angiotensin II（1-7） receptor（Mas）） have been identified within the brain. Moreover, a receptor capable of binding renin and the renin precursor prorenin with high affinity has also been detected within the brain. This protein functions as a membrane receptor for（pro）renin and also represents a V-ATPase subunit and is therefore termed（P）RR or Atp6 ap2, respectively. In this review we shed light on the（known as well as putative） roles and functions of Atp6 ap2 in the brain under physiological and pathophysiological conditions.展开更多
Members of the mitochondrial solute carrier(SLC)family 25(SLC25)provide transport steps for substances across the mitochondrial inner membrane into the mitochondria that are needed for biochemical pathways and cellula...Members of the mitochondrial solute carrier(SLC)family 25(SLC25)provide transport steps for substances across the mitochondrial inner membrane into the mitochondria that are needed for biochemical pathways and cellular homoeostasis.In a recent paper in Nature,Wang et al.1 could demonstrate that glutathione(GSH)transport seems to be mediated by SLC25A39,since loss of SLC25A39 reduces mitochondrial GSH import and abundance without affecting cellular GSH levels.展开更多
基金supported by the German Research Foundation, No. BO 1971/5-1
文摘Adult neurogenesis can only be observed in some specific brain regions. One of these areas is the dentate gyrus of the hippocampal formation. The progenitor cells located in the subgranular layer of the dentate gyrus proliferate, differentiate, and give rise to young neurons that can become integrated into existing neuronal circuits. Under physiological conditions, hippocampal neurogenesis is linked to hippocampal-dependent learning, whereas deficits in adult hippocampal neurogenesis have been shown to correlate with disturbances in spatial learning and memory. This review summarizes the phenomenon of adult hippocampal neurogenesis and the use of suitable markers for the investigation of adult hippocampal neurogenesis. In addition, we focused on the disturbances in neurogenesis that can be seen in depression. Interestingly, several antidepressants have been found to be capable of increasing the rate of hippocampal neurogenesis. Based on that, it can be speculated that factors, which directly or indirectly increase the rate of hippocampal neurogenesis, may be helpful in the treatment of depression.
文摘The classical renin-angiotensin system（RAS） in the body has been studied intensively in the last decades, since it is known that this system is involved in the regulation of blood pressure. Since nearly all members of the classical RAS have also been identified within the brain in the last decades and due to the existence of the blood-brain barrier, a RAS within the brain（bRAS） that is largely independent from the peripheral RAS has been postulated. All members of the angiotensin family as e.g., angiotensin II, angiotensin IV and angiotensin II（1-7） along with the respective receptors（e.g., angiotensin II receptor type 1（AT1）, angiotensin II receptor type 2（AT2）, angiotensin IV receptor（AT4）, angiotensin II（1-7） receptor（Mas）） have been identified within the brain. Moreover, a receptor capable of binding renin and the renin precursor prorenin with high affinity has also been detected within the brain. This protein functions as a membrane receptor for（pro）renin and also represents a V-ATPase subunit and is therefore termed（P）RR or Atp6 ap2, respectively. In this review we shed light on the（known as well as putative） roles and functions of Atp6 ap2 in the brain under physiological and pathophysiological conditions.
文摘Members of the mitochondrial solute carrier(SLC)family 25(SLC25)provide transport steps for substances across the mitochondrial inner membrane into the mitochondria that are needed for biochemical pathways and cellular homoeostasis.In a recent paper in Nature,Wang et al.1 could demonstrate that glutathione(GSH)transport seems to be mediated by SLC25A39,since loss of SLC25A39 reduces mitochondrial GSH import and abundance without affecting cellular GSH levels.
