Anhedonia, the presence of diminished pleasure or decreased motivation for rewards is considered one of the core symptoms of depression. Studies have shown that anhedonia and reduced reward learning predict a poor pro...Anhedonia, the presence of diminished pleasure or decreased motivation for rewards is considered one of the core symptoms of depression. Studies have shown that anhedonia and reduced reward learning predict a poor prognosis with a higher prevalence of treatment failure among patients. Several mechanisms have been implicated in the onset and progression of depression;furthermore, an important amount of evidence supports not only the importance of the reward circuitry in the development of depressive anhedonia but also, that it is closely related with the presence of inflammation. In the current paper we show that 500 ul carrageenan administration in the right hind paw after deafferentation surgery leads to anhedonia, which is evident by a decrease in saccharine consumption in a two-bottle choice test;these findings suggest that carrageenan mediated inflammation is a reliable model of anhedonia that could lead to a better understanding of the immune-neural axis in motivation.展开更多
BACKGROUND Obese patients(Ob)with a binge eating disorders(BED)behavior pattern have a higher prevalence of postprandial distress syndrome(PDS)compared to Ob without a BED behavior pattern,while an increase of PDS has...BACKGROUND Obese patients(Ob)with a binge eating disorders(BED)behavior pattern have a higher prevalence of postprandial distress syndrome(PDS)compared to Ob without a BED behavior pattern,while an increase of PDS has been described in Ob after sleeve gastrectomy(SG).Hedonic response to a meal is dissociable from satiation in healthy subjects.Anhedonia is the lowered ability to experience pleasure.There are no studies investigating the presence of anhedonia in Ob with and without SG and its relationship to PDS symptoms.AIM To assess the relationship among anhedonia,BED and upper gastrointestinal symptoms in two group of morbidly Ob with and without SG.METHODS Eighty-one Ob without SG,45 Ob with SG and 55 healthy controls(HC)were studied.All subjects fulfilled the binge eating scale(BES)to investigate BED,the validated 14 items Snaith-Hamilton pleasure scale(SHAPS)to assess Anhedonia as well as the Beck Depression Inventory-II(BDI II)and State Trait Anxiety Inventory(STAI)questionnaires to screen for depression and anxiety.All patients underwent a standardized questionnaire investigating the intensity-frequency scores(0-6)of upper gastrointestinal symptoms and were diagnosed for the presence of functional dyspepsia(FD)and its subtypes according to ROME IV criteria.RESULTS Ob without SG who were positive for BED had a 4.7 higher risk of FD compared to Ob without SG who were negative for BED(OR:4.7;95.0%CI 1.23-18.24;P=0.02).STAI-Y2 scores were significantly higher in Ob without SG positive for BED(42.2±1.5 vs Ob negative for BED:39.6±1.0,P=0.04),while SHAPS scores and BDI II did not differ in the two groups(1.16±1.30 vs 0.89±1.02,P=0.49).A lower prevalence of BED(BES>17:11.4%vs 40.7%,P=0.001)and BDI-II(6.8±1.2 vs 13.8±1.9,P=0.005)was reported in Ob with SG than Ob without SG,on the contrary total mean scores of STAI-Y1 and STAI-Y2 were significantly higher in Ob with SG than Ob without SG.Thirty-five percent of Ob with SG fulfilled the diagnosis of FD.SHAPS mean scores and the prevalence of anhedonia did not differ among the two groups(18.2 vs 8.1%,P=0.2).Fifty-four percent of Ob with SG achieved surgical success excess weight loss>50%.Excess weight loss was negatively related to SHAPS total mean scores[adjusted B:-7.099(95%CI:-13.91 to-0.29),P=0.04].CONCLUSION Ob without SG showed a higher prevalence of PDS,mood disorders and anxiety when positive for BE behavior compared to those negative for BE behavior,whereas no differences were found in SHAPS score.Ob with SG showed a higher prevalence of PDS compared to Ob without SG.Concerning psychological aspect,BED and depression are less frequent in the Ob with SG,while both state and trait anxiety are significantly higher.Moreover,the more an Ob with SG is anhedonic,less surgical success was achieved.展开更多
Anhedonia can be defined as a condition in which the hedonic capacity is totally or partially lost. From a psychobiological perspective, several researchers proposed that anhedonia has a putative neural substrate, the...Anhedonia can be defined as a condition in which the hedonic capacity is totally or partially lost. From a psychobiological perspective, several researchers proposed that anhedonia has a putative neural substrate, the dopaminergic mesolimbic and mesocortical reward circuit, which involves the ventral tegmental area, the ventral striatum and part of the prefrontal cortex. Anhedonia is, besides depressed mood, one of the two core symptoms of depression;furthermore it is one of the most important negative symptom in schizophrenia. Anhedonia is also present in substance use disorders as part of the abstinence symptomatology, and interrelations between hedonic capability, craving and protracted withdrawal have been found, particularly in opiate-dependent subjects. Although anhedonia is regarded as an important symptom in psychopathology, so far it has received relatively little attention. In general, two main approaches have been utilized to investigate and assess anhedonia or hedonic capacity: laboratory-based measures and questionnaires. Among measurement scales, the most commonly used are the Snaith-Hamilton Pleasure Scale (SHAPS), the Fawcett-Clark Pleasure Scale (FCPS), and the Revised Chapman Physical Anhedonia Scale (CPAS). Nevertheless, other measurement scales, particularly used within broader psychopathological dimensions, are the Anhedonia-Asociality subscale (SANSanh) of the Scale for the Assessment of Negative Symptoms (SANS) and the Bech-Rafaelsen Melancholia Scale (BRMS). In this paper we analyze these different scales, individuating their strengths and limits and their current clinical applications.展开更多
Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedoni...Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedonia, notably in PD, could constitute a stable characteristic (anhedonia-trait) or secondary symptom (anhedonia-state). Several studies, using healthy control groups, reported high state consummatory and anticipatory anhedonia in PD using the Snaith Hamilton Pleasure Scale (SHAPS), but when control groups included subjects with different illnesses no significant differences were reported. The aim of the present study was to compare PD subjects with subjects presenting a non-Parkinson motor neurological disease on the anhedonia subscale of the Beck Depression Inventory (BDI-II). This subscale rated consummatory and anticipatory anhedonia state. No significant difference was reported. This result confirmed that PD subjects were not characterized by high levels of state anhedonia when the subjects were compared to subjects with a different disease. Contrary to trait consummatory anhedonia, state anhedonia could be nonspecific to Parkinson’s disease.展开更多
快感缺失是青少年抑郁障碍的常见临床症状之一,不仅影响了青少年抑郁患者的身心健康,还可能降低临床疗效并导致预后不良,且一线抗抑郁药物对青少年抑郁患者快感缺失症状的疗效较为有限。重复经颅磁刺激(Repeated Transcranial Magnetic ...快感缺失是青少年抑郁障碍的常见临床症状之一,不仅影响了青少年抑郁患者的身心健康,还可能降低临床疗效并导致预后不良,且一线抗抑郁药物对青少年抑郁患者快感缺失症状的疗效较为有限。重复经颅磁刺激(Repeated Transcranial Magnetic Stimulation, rTMS)作为一项安全有效的神经调控物理治疗技术,目前已逐步运用于青少年抑郁障碍的临床干预。本文概述了青少年抑郁障碍快感缺失的形成机制,总结了现有rTMS治疗青少年抑郁障碍的研究并分析rTMS治疗青少年抑郁障碍快感缺失的可行性,最后讨论了现有研究的优点及不足,并对未来研究进行展望。展开更多
文摘Anhedonia, the presence of diminished pleasure or decreased motivation for rewards is considered one of the core symptoms of depression. Studies have shown that anhedonia and reduced reward learning predict a poor prognosis with a higher prevalence of treatment failure among patients. Several mechanisms have been implicated in the onset and progression of depression;furthermore, an important amount of evidence supports not only the importance of the reward circuitry in the development of depressive anhedonia but also, that it is closely related with the presence of inflammation. In the current paper we show that 500 ul carrageenan administration in the right hind paw after deafferentation surgery leads to anhedonia, which is evident by a decrease in saccharine consumption in a two-bottle choice test;these findings suggest that carrageenan mediated inflammation is a reliable model of anhedonia that could lead to a better understanding of the immune-neural axis in motivation.
文摘BACKGROUND Obese patients(Ob)with a binge eating disorders(BED)behavior pattern have a higher prevalence of postprandial distress syndrome(PDS)compared to Ob without a BED behavior pattern,while an increase of PDS has been described in Ob after sleeve gastrectomy(SG).Hedonic response to a meal is dissociable from satiation in healthy subjects.Anhedonia is the lowered ability to experience pleasure.There are no studies investigating the presence of anhedonia in Ob with and without SG and its relationship to PDS symptoms.AIM To assess the relationship among anhedonia,BED and upper gastrointestinal symptoms in two group of morbidly Ob with and without SG.METHODS Eighty-one Ob without SG,45 Ob with SG and 55 healthy controls(HC)were studied.All subjects fulfilled the binge eating scale(BES)to investigate BED,the validated 14 items Snaith-Hamilton pleasure scale(SHAPS)to assess Anhedonia as well as the Beck Depression Inventory-II(BDI II)and State Trait Anxiety Inventory(STAI)questionnaires to screen for depression and anxiety.All patients underwent a standardized questionnaire investigating the intensity-frequency scores(0-6)of upper gastrointestinal symptoms and were diagnosed for the presence of functional dyspepsia(FD)and its subtypes according to ROME IV criteria.RESULTS Ob without SG who were positive for BED had a 4.7 higher risk of FD compared to Ob without SG who were negative for BED(OR:4.7;95.0%CI 1.23-18.24;P=0.02).STAI-Y2 scores were significantly higher in Ob without SG positive for BED(42.2±1.5 vs Ob negative for BED:39.6±1.0,P=0.04),while SHAPS scores and BDI II did not differ in the two groups(1.16±1.30 vs 0.89±1.02,P=0.49).A lower prevalence of BED(BES>17:11.4%vs 40.7%,P=0.001)and BDI-II(6.8±1.2 vs 13.8±1.9,P=0.005)was reported in Ob with SG than Ob without SG,on the contrary total mean scores of STAI-Y1 and STAI-Y2 were significantly higher in Ob with SG than Ob without SG.Thirty-five percent of Ob with SG fulfilled the diagnosis of FD.SHAPS mean scores and the prevalence of anhedonia did not differ among the two groups(18.2 vs 8.1%,P=0.2).Fifty-four percent of Ob with SG achieved surgical success excess weight loss>50%.Excess weight loss was negatively related to SHAPS total mean scores[adjusted B:-7.099(95%CI:-13.91 to-0.29),P=0.04].CONCLUSION Ob without SG showed a higher prevalence of PDS,mood disorders and anxiety when positive for BE behavior compared to those negative for BE behavior,whereas no differences were found in SHAPS score.Ob with SG showed a higher prevalence of PDS compared to Ob without SG.Concerning psychological aspect,BED and depression are less frequent in the Ob with SG,while both state and trait anxiety are significantly higher.Moreover,the more an Ob with SG is anhedonic,less surgical success was achieved.
文摘Anhedonia can be defined as a condition in which the hedonic capacity is totally or partially lost. From a psychobiological perspective, several researchers proposed that anhedonia has a putative neural substrate, the dopaminergic mesolimbic and mesocortical reward circuit, which involves the ventral tegmental area, the ventral striatum and part of the prefrontal cortex. Anhedonia is, besides depressed mood, one of the two core symptoms of depression;furthermore it is one of the most important negative symptom in schizophrenia. Anhedonia is also present in substance use disorders as part of the abstinence symptomatology, and interrelations between hedonic capability, craving and protracted withdrawal have been found, particularly in opiate-dependent subjects. Although anhedonia is regarded as an important symptom in psychopathology, so far it has received relatively little attention. In general, two main approaches have been utilized to investigate and assess anhedonia or hedonic capacity: laboratory-based measures and questionnaires. Among measurement scales, the most commonly used are the Snaith-Hamilton Pleasure Scale (SHAPS), the Fawcett-Clark Pleasure Scale (FCPS), and the Revised Chapman Physical Anhedonia Scale (CPAS). Nevertheless, other measurement scales, particularly used within broader psychopathological dimensions, are the Anhedonia-Asociality subscale (SANSanh) of the Scale for the Assessment of Negative Symptoms (SANS) and the Bech-Rafaelsen Melancholia Scale (BRMS). In this paper we analyze these different scales, individuating their strengths and limits and their current clinical applications.
文摘Anhedonia, the lowered ability to experience pleasure, is one of the non-motor symptoms in Parkinson’s disease. Recently, the distinction between consummatory and anticipatory anhedonia has been proposed and anhedonia, notably in PD, could constitute a stable characteristic (anhedonia-trait) or secondary symptom (anhedonia-state). Several studies, using healthy control groups, reported high state consummatory and anticipatory anhedonia in PD using the Snaith Hamilton Pleasure Scale (SHAPS), but when control groups included subjects with different illnesses no significant differences were reported. The aim of the present study was to compare PD subjects with subjects presenting a non-Parkinson motor neurological disease on the anhedonia subscale of the Beck Depression Inventory (BDI-II). This subscale rated consummatory and anticipatory anhedonia state. No significant difference was reported. This result confirmed that PD subjects were not characterized by high levels of state anhedonia when the subjects were compared to subjects with a different disease. Contrary to trait consummatory anhedonia, state anhedonia could be nonspecific to Parkinson’s disease.
文摘快感缺失是青少年抑郁障碍的常见临床症状之一,不仅影响了青少年抑郁患者的身心健康,还可能降低临床疗效并导致预后不良,且一线抗抑郁药物对青少年抑郁患者快感缺失症状的疗效较为有限。重复经颅磁刺激(Repeated Transcranial Magnetic Stimulation, rTMS)作为一项安全有效的神经调控物理治疗技术,目前已逐步运用于青少年抑郁障碍的临床干预。本文概述了青少年抑郁障碍快感缺失的形成机制,总结了现有rTMS治疗青少年抑郁障碍的研究并分析rTMS治疗青少年抑郁障碍快感缺失的可行性,最后讨论了现有研究的优点及不足,并对未来研究进行展望。
