Clinical effect of acupuncture at ghost points combined with fluoxetine hydrochloride on mild-to-moderate depression

BACKGROUND Depression is a common,chronic,and recurrent mood disorder that has become a worldwide health hazard.Fluoxetine hydrochloride,a common treatment method,can inhibit 5-hydroxytryptamine(5-HT)recycling in the presynaptic membrane;however,the efficacy of a single drug is inadequate.At present,mildto-moderate depression can be treated with acupuncture of ghost caves,but the clinical curative effect of combined therapy with fluoxetine hydrochloride has not been sufficiently reported.AIM To evaluate the clinical effect of acupuncture at ghost points combined with fluoxetine hydrochloride in the treatment of mild-to-moderate depression.METHODS This retrospective study included 160 patients with mild-to-moderate depression who were admitted to Shanghai Hospital of Integrated Traditional Chinese and Western Medicine,Affiliated to Shanghai University of Traditional Chinese Medicine,between January 2022 and June 2023.Patients were separated into a single-agent group(fluoxetine hydrochloride treatment,n=80)and a coalition group(fluoxetine hydrochloride treatment combined with acupuncture at ghost points,n=80).Pre-treatment symptoms were recorded,and the clinical curative effect and adverse reactions[Asberg Antidepressant Side Effects Scale(SERS)]were assessed.Depression before and after treatment[Hamilton Depression Scale(HAMD)-24],neurotransmitter levels[5-HT,norepinephrine(NE),dopamine(DA)],oxidative stress indicators[superoxide dismutase(SOD),malondialdehyde(MDA)],and sleep quality[Pittsburgh Sleep Quality Index(PSQI)]were compared.RESULTS The total efficacy rate was 97.50%in the coalition group and 86.25%in the single-agent group(P<0.05).After 2,4,6,and 8 wk of treatment,the HAMD,self-rating depression scale,and SERS scores of the coalition and single-agent groups decreased compared with pre-treatment,and the decrease was more significant in the coalition group(P<0.05).After 8 wk of treatment,the levels of NE,DA,5-HT,and SOD in the coalition and single-agent groups increased,while the levels of MDA decreased;the increases and decrease in the coalition group were more significant(P<0.05).The PSQI scores of the coalition and single-agent groups decreased,and the decrease was more significant in the coalition group(P<0.05).CONCLUSION Acupuncture at ghost points combined with paroxetine tablets can safely improve depressive symptoms and sleep disorders,regulate neurotransmitter levels,and reduce stress responses in patients with mild-to-moderate depression.

Fluoxetine ameliorates cognitive impairments induced by chronic cerebral hypoperfusion via down-regulation of HCN2 surface expression in the hippocampal CA1 area

Aim To investigate whether tluoxetine, a selective serotonin reuptake inhibitor（ SSRI） , could amelio- rate cognitive impairments induced by chronic cerebral hypopeffusion in rats and to clarify the underlying mecha- nisms of its efficacy. Methods Rats were subjected to permanent bilateral occlusion of the common carotid arteries （two-vessel occlusion, 2VO）. Two weeks later, rats were treated with 30 mg · kg^-1 fluoxetine （intragastric injec- tion, i. g. ） for 6 weeks. Cognitive function was evaluated by Morris water maze （MWM） and novel objects recog- nition （NOR） test. Long-term potentiation （LTP） was used to address the underlying synaptic mechanisms. West- ern blot was used to quantify the protein levels. Results Fluoxetine treatment significantly improved the cognitive 2VO impairments caused by 2VO, accompanied with a reversion of 2VO-induced inhibitory of LTP. Furthermore, caused an up-regulation of hyperpolarization-activated cyclic nueleotide-gated channel 2 （HCN2） surface expres- sions in the hippocampal CA1 area and fluoxetine also effectively recovered the up-regulation of HCN2 surface ex- pressions. Conclusion Fluoxetine can ameliorate cognitive impairments induced by chronic cerebral hypopeffusion and a possible mechanism may via down-regulating HCN2 surface expression in the Hippocampal CA1 area.

Delineation of biomarkers and molecular pathways of residual effects of fluoxetine treatment in juvenile rhesus monkeys by proteomic profiling

Fluoxetine(Prozac^(TM))is the only antidepressant approved by the US Food and Drug Administration(FDA)for the treatment of major depressive disorder(MDD)in children.Despite its considerable efficacy as a selective serotonin reuptake inhibitor,the possible long-term effects of fluoxetine on brain development in children are poorly understood.In the current study,we aimed to delineate molecular mechanisms and protein biomarkers in the brains of juvenile rhesus macaques(Macaca mulatta)one year after the discontinuation of fluoxetine treatment using proteomic and phosphoproteomic profiling.We identified several differences in protein expression and phosphorylation in the dorsolateral prefrontal cortex(DLPFC)and cingulate cortex(CC)that correlated with impulsivity in animals,suggesting that the GABAergic synapse pathway may be affected by fluoxetine treatment.Biomarkers in combination with the identified pathways contribute to a better understanding of the mechanisms underlying the chronic effects of fluoxetine after discontinuation in children.

Fluoxetine induces cytotoxic endoplasmic reticulum stress and autophagy in triple negative breast cancer

AIM: To investigate the mechanism of action of lipophilic antidepressant fluoxetine(FLX) in representative molecular subtypes of breast cancer.METHODS: The anti-proliferative effects and mechanistic action of FLX in triple-negative(SUM149PT) and luminal(T47D and Au565) cancer cells and nontransformed MCF10 A were investigated. Reverse phase protein microarray(RPPM) was performed with and without 10 μmol/L FLX for 24 and 48 h to determine which proteins are significantly changed. Viability and cell cycle analysis were also performed to determine drug effects on cell growth. Western blotting was used to confirm the change in protein expression examined by RPPM or pursue other signaling proteins. RESULTS: The FLX-induced cell growth inhibition in all cell lines was concentration- and time-dependent but less pronounced in early passage MCF10 A. In comparison to the other lines,cell growth reduction in SUM149 PT coincided with significant induction of endoplasmic reticulum(ER) stress and autophagy after 24 and 48 h of 10 μmol/L FLX,resulting in decreased translation of proteins along the receptor tyrosine kinase/Akt/mammalian target of rapamycin pathways. The increase in autophagy marker,cleaved microtubule-associated protein 1 light chain 3,in SUM149 PT after 24 h of FLX was likely due to increased metabolic demands of rapidly dividing cells and ER stress. Consequently,the unfolded protein response mediated by double-stranded RNA-dependent protein kinase-like ER kinase resulted in inhibition of protein synthesis,growth arrest at the G1 phase,autophagy,and caspase-7-mediated cell death.CONCLUSION: Our study suggests a new role for FLX as an inducer of ER stress and autophagy,resulting in death of aggressive triple negative breast cancer SUM149 PT.

Fluoxetine Ameliorates the Aggravation of UC Symptoms in C57BL/6 Mice Induced by CUMS

Objective Patients with chronic ulcerative colitis(UC)often have mental symptoms such as depression and anxiety,and stress can lead to gastrointestinal diseases.However,the correlation between mental stress and UC is unclear.In this paper,chronic unpredictable mild stress(CUMS)was utilized to evaluate the involvement of mental factors in the pathogenesis of UC.Methods The CUMS model was used to evaluate the direct/indirect involvement of mental factors in the pathogenesis of UC.The behavior was evaluated by the open field,forced swimming,and tail suspension tests.Body weight,the disease activity index(DAI)score,colon length,and HE staining of colon tissue were used to evaluate the action of CUMS and fluoxetine.Results The results showed that weight loss and the DAI score increased in CUMS mice,but they had no meaningful effect on colon length and morphological structure of colon tissue.However,CUMS aggravated dextran sulfate sodium(DSS)-induced colon length shortening and colon morphological structure damage.Fluoxetine significantly improved the DAI score,shortened colon length,and damaged morphology and structure of the colons induced by CUMS combined with DSS in mice.Fluoxetine also decreased the level of IL-6 in the serum and the TNF-αand IFN-γlevels of colon tissue.Fluoxetine simultaneously improved behavioral abnormalities induced by CUMS combined with DSS in mice.Conclusion CUMS aggravated the UC symptoms induced by DSS,and fluoxetine could improve the UC symptoms due to its improvement in the inflammatory level and behavioral abnormalities.

Effect of <i>Citrus aurantium</i>L. Essential Oil and Its Interaction with Fluoxetine on Anxiety in Male Mice

Anxiety is a very common mental disorder among neurological diseases. Some herbs have soothing effects and play an important role in reducing anxiety. The purpose of this study is to investigate the effect of Citrus aurantium L. essential oil on anxiety and its interference with serotonergic pathway. Sixty male mice were assigned into control, sham (saline and olive oil), and experimental groups. Intraperitoneal injection of Citrus aurantium L. essential oil was applied at doses of 0.5, 2.5, and 5 percent for 5 days. In another set of experiments, after intraperitoneal injection of Citrus aurantium L. essential oil at doses of 0.5, 2.5, and 5 percent for 5 days, on the 5th day, 30 minutes before applying essential oil, fluoxetine (2 mg/kg) was injected. Then, the anxiety-related behavior was assessed using elevated plus maze test. The results revealed that injection of essential oil of Citrus aurantium L. alone or along with fluoxetine led to increasing the number of entries into the open arms and the time spent in open arms that was significantly different compared with control and sham groups (P?< 0.001). Besides, further effects revealed when fluoxetine added to essential oils, however no more effects obtained when compared to fluoxetine alone. It is concluded that Citrus aurantium L. essential oil can reduce the anxiety in male mice and due to fluoxetin potentiation and maximum response observed, the herb may express its anxiolytic effects in part, via serotonergic system.

Fluoxetine,a selective serotonin reuptake inhibitor used clinically,improves bladder function in a mouse model of moderate spinal cord injury

After spinal cord injury,the upward conduction of the spinal cord is lost,resulting in the loss of micturition control,which manifests as detrusor sphincter dyssynergia and insufficient micturition.Studies have shown that serotonergic axons play important roles in the control of the descending urination tract.In this study,mouse models of moderate spinal cord contusions were established.The serotonin agonists quipazine(0.2 mg/kg),8-hydroxy-2-(di-n-propylamino)tetralin(8-OH-DAPT,0.1 mg/kg),buspirone(1 mg/kg),sumatriptan(1 mg/kg),and rizatriptan(50 mg/kg),the serotonin reuptake inhibitors fluoxetine(20 mg/kg)and duloxetine(1 mg/kg),and the dopamine receptor agonist SKF-82197(0.1 mg/kg)were intraperitoneally administered to the model mice 35 days post-injury in an acute manner.The voided stain on paper method and urodynamics revealed that fluoxetine reduced the amount of residual urine in the bladder and decreased bladder and external urethral sphincter pressure in a mouse model of moderate spinal cord injury.However,fluoxetine did not improve the micturition function in a mouse model of severe spinal cord injury.In contrast,the other serotonergic drugs had no effects on the micturition functions of spinal cord injury model mice.This study was ethically approved by the Institutional Animal Care and Use Committee of Jiangsu Province Hospital of Chinese Medicine(approval No.2020DW-20-02)on September 11,2020.

Fluoxetine Hydrochloride的NMR数据解析

由美国Lilly公司开发的第二代抗抑郁症药物盐酸氟西汀(Fluoxetine hydrochloride),属于选择性5-羟色胺再摄取抑制剂(SSRI),除了用于治疗各类抑郁症,包括轻性或重性抑郁症,尤宜用于老年性抑郁症之外,对于强迫症、惊恐发作、贪食症、经前期焦虑等亦有很好疗效.Fluoxetine hydrochloride是一种双环化合物,与传统的三环类、杂环类或单胺氧化酶抑制剂抗抑郁药相比,具有疗效好、不良反应轻而少,安全性高、耐受性好等特点,目前已作为一线的抗抑郁药得到广泛应用.本文对Fluoxetine hydrochloride进行了1H NMR和13C NMR检测,并通过DEPT和1H-1HCOSY、HMBC、HSQC等2D NMR技术对其1H NMR和13C NMR数据进行了较为详细的解析和比文献[1]更为全面的NMR归属,为以后的分析鉴定提供更完善的依据.

Effect of fluoxetine on depression-induced changes in the expression of vasoactive intestinal polypeptide and corticotrophin releasing factor in rat duodenum

AIM: To investigate changes in vasoactive intestinal polypeptide (VIP) and corticotrophin releasing factor (CRF) in the plasma and duodenum of chronic stress- induced depressed rats and the effects of fluoxetine hydrochloride (fluoxetine) treatment on depression- induced changes in VIP and CRF. METHODS: A Sprague-Dawley rat model of chronic stress-induced depression was produced. Thirty experimental rats were randomly divided into the following groups: control group, saline-treated depressed group, and fluoxetine-treated depressed group. Open- f ield testing was performed to assess the rats’ behavior. VIP and CRF levels in plasma were measured by ELISA. Immunofluorescence techniques combined with laser scanning confocal microscopy (LSCM) were used to investigate VIP and CRF expression in the duodenum. RESULTS: The open-field behavior, both crossing and rearing, of depression model rats, decreased signif icantly compared with those of normal control rats over 5 min. Defecation times increased significantly. Compared to the control group, FITC fluorescence of duodenal CRF expression and plasma CRF levels in the depressed rats increased significantly (fluorescence intensity of duodenal CRF: 11.82 ± 2.54 vs 25.17 ± 4.63; plasma CRF: 11.82 ± 2.54 ng/L vs 25.17 ± 4.63 ng/L, P < 0.01), whereas duodenal VIP expression and plasma VIP levels decreased signif icantly (fluorescence intensity of duodenal VIP: 67.37 ± 18.90 vs 44.51 ± 16.37; plasmaVIP: 67.37 ± 18.90 ng/L vs 44.51 ± 16.37 ng/L, P < 0.01). Fluoxetine improved depressed behavior, increased VIP expression and decreased CRF expression in plasma and the duodenal tissue of depressed rats. CONCLUSION: Chronic stress can induce injury to the duodenum, accompanied by increasing CRF and decreasing VIP in the plasma and duodenum. Treatment with fluoxetine can ameliorate pathological changes in the duodenum of depressed rats, which suggests that antidepressants are an effective therapeutic agent for some duodenal diseases caused by chronic stress. VIP is a potential therapeutic strategy.

Hypoglycemia associated with fluoxetine treatment in a patient with type 1 diabetes

We report on a patient with type 1 diabetes mellitus who presented with recurrent episodes of hypoglycemia and a marked reduction in her daily insulin requirements after introduction of fluoxetine. This 25-yearold Caucasian woman had been followed up at the outpatient clinic for type 1 diabetes mellitus and prepregnancy care. She used a continuous subcutaneous insulin infusion with lispro and her daily insulin dose was 0.5 IU/kg per day. She had no chronic diabetic complications or hypoglycemia unawareness. Fluoxetine at a daily dose of 20 mg had been started because of depressive symptoms and within one week, she presented recurrent hypoglycemic episodes that prompted a progressive reduction in the insulin dose down to 0.3 IU/kg per day. The reduced insulin requirements continued during the period of fluoxetine treatment while glycated hemoglobin remained stable. She had no concurrent additional cause to explain the reduced insulin requirements. After fluoxetine was stopped, insulin re-quirements progressively increased and returned to the patient′s usual dose.

Efficacy of acupuncture at ghost points combined with fluoxetine in treating depression:A randomized study

BACKGROUND Depression affects more than 350 million people worldwide.In China,4.2%(54 million people)of the total population suffers from depression.Psychotherapy has been shown to change cognition,improve personality,and enhance the ability to cope with difficulties and setbacks.While pharmacotherapy can reduce symptoms,it is also associated with adverse reactions and relapse after drug withdrawal.Therefore,there has been an increasing emphasis placed on the use of non-pharmacological therapies for depression.The hypothesis of this study was that acupuncture at ghost points combined with fluoxetine would be more effective than fluoxetine alone for the treatment of depression.AIM To investigate the efficacy of acupuncture at ghost points combined with fluoxetine for the treatment of patients with depression.METHODS This randomized controlled trial included patients with mild to moderate depression(n=160).Patients received either acupuncture at ghost points combined with fluoxetine(n=80)or fluoxetine alone(control group,n=80).Needles were retained in place for 30 min,5 times a week;three treatment cycles were administered.The Mann–Whitney U test was used to compare functional magnet resonance imaging parameters,Hamilton depression rating scale(HAMD)scores,and self-rating depression scale(SDS)scores between the acupuncture group and control group.RESULTS There were no significant differences in HAMD or SDS scores between the acupuncture group and control group,before or after 4 wk of treatment.The acupuncture group exhibited significantly lower HAMD and SDS scores than the control group after 8 wk of treatment(P<0.05).The acupuncture group had significantly lower fractional Amplitude of Low Frequency Fluctuations values for the left anterior wedge leaf,left posterior cingulate gyrus,left middle occipital gyrus,and left inferior occipital gyrus after 8 wk.The acupuncture group also had significantly higher values for the right inferior frontal gyrus,right insula,and right hippocampus(P<0.05).After 8 wk of treatment,the effective rates of the acupuncture and control groups were 51.25%and 36.25%,respectively(P<0.05).CONCLUSION The study results suggest that acupuncture at ghost points combined with fluoxetine is more effective than fluoxetine alone for the treatment of patients with mild to moderate depression.

Baicalin provides protection against fluoxetine-induced hepatotoxicity by modulation of oxidative stress and inflammation

BACKGROUND Fluoxetine is one of the most widely prescribed anti-depressant drugs belonging to the category of selective serotonin reuptake inhibitors.Long-term fluoxetine treatment results in hepatotoxicity.Baicalin,a natural compound obtained from the Chinese herb Scutellaria baicalensis is known to have antioxidant,hepatoprotective and anti-inflammatory effects.However,the beneficial effects of baicalin against fluoxetine-induced hepatic damage have not previously been reported.AIM To evaluate the protective action of baicalin in fluoxetine-induced liver toxicity and inflammation.METHODS Male albino Wistar rats were divided into seven groups.Group 1 was the normal control.Oral fluoxetine was administered at 10 mg/kg body weight to groups 2,3,4 and 5.In addition,groups 3 and 4 were also co-administered oral baicalin(50 mg/kg and 100 mg/kg,respectively)while group 5 received silymarin(100 mg/kg),a standard hepatoprotective compound for comparison.Groups 6 and 7 were used as a positive control for baicalin(100 mg/kg)and silymarin(100 mg/kg),respectively.All treatments were carried out for 28 d.After sacrifice of the rats,biomarkers of oxidative stress[superoxide dismutase(SOD),catalase(CAT),reduced glutathione(GSH),glutathione-S-transferase(GST),advanced oxidation protein products(AOPP),malondialdehyde(MDA)],and liver injury[alanine transaminase(ALT),aspartate transaminase(AST),alkaline phosphatase(ALP),total protein,albumin,bilirubin]were studied in serum and tissue using standard protocols and diagnostic kits.Inflammatory markers[tumor necrosis factor(TNF-α),interleukin(IL)-6,IL-10 and interferon(IFN)-γ]in serum were evaluated using ELISA-based kits.The effect of baicalin on liver was also analyzed by histopathological examination of tissue sections.RESULTS Fluoxetine-treated rats showed elevated levels of the serum liver function markers(total bilirubin,ALT,AST,and ALP)and inflammatory markers(TNF-α,IL-6,IL-10 and IFN-γ),with a decline in total protein and albumin levels.Biochemical markers of oxidative stress such as SOD,CAT,GST,GSH,MDA and AOPP in the liver tissue homogenate were also altered indicating a surge in reactive oxygen species leading to oxidative damage.Histological examination of liver tissue also showed degeneration of hepatocytes.Concurrent administration of baicalin(50 and 100 mg/kg)restored the biomarkers of oxidative stress,inflammation and hepatic damage in serum as well as in liver tissues to near normal levels.CONCLUSION These findings suggested that long-term treatment with fluoxetine leads to oxidative stress via the formation of free radicals that consequently cause inflammation and liver damage.Concurrent treatment with baicalin alleviated fluoxetine-induced hepatotoxicity and liver injury by regulating oxidative stress and inflammation.

Effects of fluoxetine on mast cell morphology and protease-1 expression in gastric antrum in a rat model of depression

AIM: To investigate the effects of fluoxetine on depression-induced changes of mast cell morphology and protease-1 (rMCP-1) expression in rats. METHODS: A Sprague-Dawley rat model of chronic stress-induced depression was established. Fifty experimental rats were randomly divided into the following groups: normal control group, fluoxetine + normal control group, depressed model group, saline + depressed model group, and fluoxetine + depressed model group. Laser scanning confocal microscopy (LSCM) immunofluorecence and RT-PCR techniques were used to investigate rMCP-1 expression in gastric antrum. Mast cell morphology was observed under transmission electron microscopy. ANOVA was used for statistical analysis among groups.RESULTS: Morphologic observation indicated that depression induced mast cell proliferation, activation, and granule hyperplasia. Compared with the normal control group, the average immunofluorescence intensity of gastric antrum rMCP-1 significantly increased in depressed model group (37.4 ± 7.7 vs 24.5 ± 5.6, P < 0.01) or saline + depressed model group (39.9 ± 5.0 vs 24.5 ± 5.6, P < 0.01), while there was no significant difference between fluoxetine + normal control group (23.1 ± 3.4) or fluoxetine + depressed model group (26.1 ± 3.6) and normal control group.The average level of rMCP-1mRNA of gastric antrum significantly increased in depressed model group (0.759 ± 0.357 vs 0.476 ± 0.029, P < 0.01) or saline + depressed model group (0.781 ± 0.451 vs 0.476 ± 0.029, P < 0.01 ), while no significant difference was found between fluoxetine + normal control group (0.460 ± 0.027) or fluoxetine + depressed model group (0.488 ± 0.030) and normal control group. Fluoxetine showed partial inhibitive effects on mast cell ultrastructural alterations and de-regulated rMCP-1 expression in gastric antrum of the depressed rat model.CONCLUSION: Chronic stress can induce mast cell proliferation, activation, and granule hyperplasia in gastric antrum. Fluoxetine counteracts such changes in the depressed rat model.

氟西汀对脑卒中后抑郁及神经功能康复的作用

目的观察氟西汀对脑卒中后抑郁及神经功能康复的疗效。方法将73例早期(<2个月)脑卒中后抑郁患者随机分为氟西汀治疗组和对照组。两组病人均予脑卒中基础治疗,同时予简单的功能训练。治疗组加用氟西汀20mg,每日1次,对照组不使用任何抗抑郁药,疗程8周。观察病人在治疗前、治疗后4周、治疗后8周Hamilton抑郁量表评分(HDRS)、Zung抑郁自评量表评分(SDS)以及生活活动量表Barthel指数(BI)的变化情况。结果治疗组治疗后4周、8周HDRS、SDS以及BI评分与治疗前比较,差异有非常显著性(P<0.01);治疗组治疗后4周、8周HDRS、SDS及BI评分,与对照组比较差异有显著性(P<0.05)。同时氟西汀无明显毒副作用,患者耐受性好,服用安全。结论氟西汀可明显改善脑卒中后抑郁患者的抑郁症状,同时还能促进神经功能康复。

白地霉G38生物转化制备抗忧郁药(R)-fluoxetine

从200株菌中筛选出具有双酮化合物还原活力较高的菌株7株,其中以白地霉(Geotrickum, sp. )G38活力最高,而且有较好的区域选择性和立体选择性。白地霉G38能对β-羰基苯丙酸乙酯进行不对称还原,生成(R)-β-羟基苯丙酸乙酯,用于制备抗忧郁药(R)-fluoxetine。用二甲基硅橡胶包埋白地霉菌体取代游离菌体进行生物转化,可以提高反应的立体选择性,对映体过量值从49％提高到81％。

Antidepressant fluoxetine and its potential against colon tumors

Colon cancer is one of the most common tumors worldwide,with increasing incidence in developing countries.Patients treated with fluoxetine(FLX) have a reduced incidence of colon cancer,although there still remains great controversy about the nature of its effects.Here we explore the latest achievements related to FLX treatment and colon cancer.Moreover,we discuss new ideas about the mechanisms of the effects of FLX treatment in colon cancer.This leads to the hypothesis of FLX arresting colon tumor cells at the at G1 cell-cycle phase through a control of the tumor-related energy generation machinery.We believe that the potential of FLX to act against tumor metabolism warrants further investigation.

Quantitative Determination of Fluoxetine in Pharmaceuticals and Plasma Samples Using Bromatometric Method

Asensitive and simple spectrophotometric method has been developed for quantitative determination of fluoxetine using bromatometric method. The method is based on the addition of measured excess amount of bromate-bromide mixture to fluoxetine in hydrochloric acid medium. The residual bromine was determined by reacting with a fixed amount ofmethyl orange and absorbance was measured at 505 nm. The amount of bromine reacted corresponds to the amount of fluoxetine. Linear relationship between absorbance and fluoxetine concentration was found and Beer’s law was obeyed in the concentration range of 0.4 - 12 μg·mL–1. The molar absorptivity was found to be 3.8 × 104 L·mol–1·cm–1. The limit of detection and limit of quantification was calculated and found to be 0.32 μg·mL–1 and 1.0 μg·mL–1respectively. The common excipients were investigated for their interferences effect in the assay. The validity of the developed method was checked through recoveries studies and successfully applied to the determination of fluoxetine in bulk powder, pharmaceutical formulations and spiked human plasma samples. The percent recoveries were found to be in the range of 97.0% - 101.0% for pharmaceutical formulations and from 97.0% - 99.0% for spiked human plasma.

Fluoxetine ameliorates depressive symptoms by regulating lncRNA expression in the mouse hippocampus

Depression is a prevalent mental disorder that is associated with aging and contributes to increased mortality and morbidity.The overall prevalence of geriatric depression with clinically significant symptoms is currently on the rise.Recent studies have demonstrated that altered expressions of long non-coding RNAs(lncRNAs)in the brain affect neurodevelopment and manifest modulating functions during the depression.However,most lncRNAs have not yet been studied.Herein,we analyzed the transcriptome of dysregulated lncRNAs to reveal their expressions in a mouse model exhibiting depressive-like behaviors,as well as their corresponding response following antidepressant fluoxetine treatment.A chronic unpredictable mild stress(CUMS)mouse model was applied.A sixweek fluoxetine intervention in CUMS-induced mice attenuated depressive-like behaviors.In addition,differential expression analysis of lncRNAs was performed following RNA-sequencing.A total of 282 lncRNAs(134 up-regulated and 148 down-regulated)were differentially expressed in CUMS-induced mice relative to non-stressed counterparts(P<0.05).Moreover,370 differentially expressed lncRNAs were identified in CUMS-induced mice after fluoxetine intervention.Gene Ontology(GO)analyses showed an association between significantly dysregulated lncRNAs and protein binding,oxygen binding,and transport activity,while the Kyoto Encyclopedia of Genes and Genomes(KEGG)analysis indicated that these dysregulated lncRNAs might be involved in inflammatory response pathways.Fluoxetine effectively ameliorated the symptoms of depression in CUMS-induced mice by regulating the expression of lncRNAs in the hippocampus.The findings herein provide valuable insights into the potential mechanism underlying depression in elderly people.

Fluoxetine——胶囊关键词：经前焦虑障碍

Mylan公司近日宣称，该公司生产Fluoxetine胶囊的10mg、20mg规格的新药申请审批已获得美国FDA通过。

Serum levels of chemokines in adolescents with major depression treated with fluoxetine

BACKGROUND Major depressive disorder(MDD)is a global health issue that affects 350 million people of all ages.Although between 2%and 5.6%of affected individuals are adolescents,research on young patients is limited.The inflammatory response contributes to the onset of depression,and in adult MDD patients,symptom severity has been linked to chemokine levels.AIM To determine the differences in circulatory levels of chemokines in healthy volunteers(HVs)and adolescents with MDD,and assess the changes induced by fluoxetine consume.METHODS The 22 adolescents with MDD were monitored during the first 8 wk of clinical follow-up and clinical psychiatric evaluation was done using the Hamilton depresión rating scale(HDRS).The serum levels of monocyte chemoattractant protein-1(MCP-1),macrophage inflammatory protein(MIP)-1α,MIP-1β,interleukin(IL)-8,interferon gamma-induced protein(IP)-10,and eotaxin were measured in patients and HVs.RESULTS In all cases,significant differences were detected in circulating chemokine levels between patients before treatment and HVs(P<0.0001).All chemokines decreased at 4 wk,but only MCP-1 and IL-8 significantly differed(P<0.05)between 0 wk and 4 wk.In the patients,all chemokines rose to their initial concentrations by 8 wk vs 0 wk,but only IP-10 did so significantly(P<0.05).All patients experienced a significant decrease in HDRS scores at 4 wk(P<0.0001)and 8 wk(P<0.0001)compared with 0 wk.CONCLUSION Despite the consumption of fluoxetine,patients had significantly higher chemokine levels,even after considering the improvement in HDRS score.The high levels of eotaxin,IP-10,and IL-8 partially explain certain aspects that are affected in MDD such as cognition,memory,and learning.