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Dive into the research topics where Miki Bloch is active.

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Featured researches published by Miki Bloch.


Psychiatry Research-neuroimaging | 2013

Cortisol response and desire to binge following psychological stress: Comparison between obese subjects with and without binge eating disorder

Noa Rosenberg; Miki Bloch; Irit Ben Avi; Vanessa Rouach; Shaul Schreiber; Naftali Stern; Yona Greenman

While stress and negative affect are known to precede emotional eating, this relationship is not fully understood. The objective of this study was to explore the relationship between induced psychological stress, hypothalamic-pituitary-adrenal (HPA) axis activity, and eating behavior in binge eating disorder (BED). The Trier Social Stress Test (TSST) was applied in obese participants with (n=8) and without BED (n=8), and normal weight controls (n=8). Psychological characteristics, eating-related symptoms, and cortisol secretion were assessed. Baseline stress, anxiety and cortisol measures were similar in all groups. At baseline desire to binge was significantly higher among the BED group. While the TSST induced an increase in cortisol levels, a blunted cortisol response was observed in the BED group. In the BED group, a positive correlation was found between cortisol (area under the curve) levels during the TSST and the change in VAS scores for desire to binge. Post-TSST desire to binge and sweet craving were significantly higher in the BED group and correlated positively with stress, anxiety, and cortisol response in the BED group only. These results suggest chronic down-regulation of the HPA axis in participants with BED, and a relationship between psychological stress, the acute activation of the HPA axis, and food craving.


Journal of Clinical Psychology in Medical Settings | 2013

Posttraumatic growth, posttraumatic stress symptoms and mental health among coronary heart disease survivors.

Irit Bluvstein; Liat Moravchick; David Sheps; Shaul Schreiber; Miki Bloch

The present study aimed to estimate posttraumatic stress symptoms (PTSS) and posttraumatic growth (PTG) among heart disease survivors and examine whether PTG moderates the association between PTSS and mental health. Data from 82 myocardial infarction and acute coronary artery bypass graft survivors (aged 46–82) was obtained at admission to a cardiac rehabilitation unit. Mental status was assessed by the PTSD Inventory, Posttraumatic Growth Inventory (PTGI), Mental Health Inventory and Health Related Quality of Life (HRQOL). 17.1xa0% of the participants suffered significantly from PTSS and most of the study sample (71.2xa0%) reported PTG. PTSS were positively associated with PTG and psychological distress and negatively with well-being and HRQOL. PTG moderated the association between PTSS and most mental health outcomes. We conclude that posttraumatic growth may attenuate the negative effect of posttraumatic stress symptoms on mental health.


The Journal of Clinical Psychiatry | 2012

The Effect of Sertraline Add-On to Brief Dynamic Psychotherapy for the Treatment of Postpartum Depression: A Randomized, Double-Blind, Placebo-Controlled Study

Miki Bloch; Hadas Meiboom; Merona Lorberblatt; Irit Bluvstein; Inbar Aharonov; Shaul Schreiber

OBJECTIVEnThe efficacy of antidepressants in the treatment of mild-to-moderate postpartum depression and the possible advantage of the combination of an antidepressant and psychotherapy have not been adequately studied. We hypothesized that psychotherapy and concurrent antidepressant treatment would be more effective than psychotherapy alone in the treatment of postpartum depression.nnnMETHODnWomen diagnosed with mild-to-moderate severity postpartum depression according to DSM-IV-TR criteria were enrolled in an 8-week, randomized, double-blind, placebo-controlled study. Participants received 12 sessions of focused brief dynamic psychotherapy (BDP) concurrently with 8-week sertraline or placebo treatment, followed by a 4-week open phase. Primary outcomes were depression scores measured by the Montgomery-Asberg Depression Rating Scale (MADRS) and remission rates. The study was conducted in a referral center from May 2008 to September 2010.nnnRESULTSnForty of 42 women randomized into the study entered the intent-to-treat analysis. A significant time effect for the MADRS was observed (F4,35 = 21.3, P < .0001); however, no time-by-group effect was found for any outcome measure. Response rates were 70% and 55% for the drug and placebo groups, respectively, and remission rates were 65% and 50%, respectively, with no significant difference between groups.nnnCONCLUSIONnWhile both treatment groups improved significantly, the results of the present study did not demonstrate a significant benefit for sertraline over placebo as an add-on treatment to focused BDP in mild-to-moderate postpartum depression. Because of the studys small sample, the results cannot be viewed as definitive, and a much larger study is needed to confirm these results. Furthermore, the promising potential of focused BDP as an intervention in this population should be studied under controlled conditions.nnnTRIAL REGISTRATIONnclinicaltrials.gov Identifier: NCT01028482.


American Journal of Drug and Alcohol Abuse | 2014

Treatment of cannabis dependence using escitalopram in combination with cognitive-behavior therapy: a double-blind placebo-controlled study.

A. M. Weinstein; H. Miller; I. Bluvstein; E. Rapoport; Shaul Schreiber; R. Bar-Hamburger; Miki Bloch

Abstract Background: Cannabis is the most frequently used illegal substance in the United States and Europe. There is a dramatic increase in the demand for treatment for cannabis dependence. Cannabis users frequently have co-morbid mood symptoms, especially depression and anxiety, and regular cannabis users may self-medicate for such symptoms. Objectives: We report a double-blind, placebo-controlled treatment study, for the prevention of cannabis use in cannabis-dependent individuals. Method: Regular cannabis-dependent users (nu2009=u200952) were treated for 9 weeks with weekly cognitive-behavior and motivation-enhancement therapy sessions together with escitalopram 10u2009mg/day. Urine samples were collected to monitor delta-9 tetrahydrocannabinol (THC) during treatment and questionnaires were administered to assess anxiety and depression. Results: We observed a high rate of dropout (50%) during the 9-week treatment program. Fifty-two patients were included in the intention-to-treat analysis. Of these, ten (19%) remained abstinent after 9 weeks of treatment as indicated by negative urine samples for THC. Escitalopram provided no advantage over placebo in either abstinence rates from cannabis or anxiety and depression scores during the withdrawal and abstinent periods. Conclusions: Escitalopram treatment does not provide an additional benefit either for achieving abstinence, or for the treatment of the cannabis withdrawal syndrome. Due to limitations of our study, namely, a high dropout rate and effects of low abstinence rates on measures of anxiety, depression and withdrawal, it is premature to conclude that selective serotonin reuptake inhibitors are not effective for treatment of the cannabis withdrawal syndrome.


Journal of Addiction Medicine | 2012

Duration of methadone maintenance treatment during pregnancy and pregnancy outcome parameters in women with opiate addiction.

Einat Peles; Shaul Schreiber; Miki Bloch; Shaul Dollberg; Miriam Adelson

Objectives:Methadone maintenance treatment (MMT) is the standard treatment of choice for pregnant opiate addicts; however, data on newborn outcomes are contradictory. We studied the effect of the timing of starting MMT and of MMT related drug abstinence on the outcome of newborns of former and current opiate-addicted pregnant women. Methods:All babies (excluding repeated deliveries) of all pregnant women who were admitted to 1 MMT clinic between 1993 and 2008 were studied. Former opiate-addicted women who became pregnant while already on MMT (full-pregnancy MMT, FP-MMT) and opiate-addicted women who only started MMT during pregnancy (partial-pregnancy MMT, PP-MMT) were retrospectively compared for birth weight and gestational age of newborns. Abstinence was defined as negative urine sample results for opiates, cocaine, amphetamines, benzodiazepine and cannabis during the month before delivery. Results:We examined 59 newborn babies: 14 in the FP-MMT group and 45 in the PP-MMT group. The mean birth weight was 2733.2 ± 392.0 g versus 2240.0 ± 680.4 g respectively (F[1] = 6.6, P = 0.01). Abstinence was determined among 73.3% of the FP-MMT and 28.6% of the PP-MMT (P = 0.004). Gestational age was higher in the abstinence (37.9 ± 2.8 weeks) versus no-abstinence group (35.8 ± 4.6 weeks; F[1] = 4.4, P = 0.04). Conclusions:The best pregnancy outcome, characterized by a higher gestational and birth weight, was associated with a longer duration on MMT and substance abstinence, emphasizing the importance of MMT stabilization before and during pregnancy.


Fertility and Sterility | 2011

GnRH-agonist induced depressive and anxiety symptoms during in vitro fertilization–embryo transfer cycles

Miki Bloch; Foad Azem; Inbar Aharonov; Irit Ben Avi; Yaron Yagil; Shaul Schreiber; Ami Amit; Abraham Weizman

To determine whether the use of a GnRH agonist inducing a hypogonadic state during IVF-ET cycles induces negative mood symptoms, we conducted a prospective randomized study in 108 women comparing two different controlled ovarian stimulation protocols. A significant phase effect was observed for depression and anxiety symptoms during IVF-ET cycles reflecting an increase in symptoms between the hypogonadal phase and the peak in gonadotropin stimulation; however, the hypogonadal phase induced by the GnRH agonist was not associated with a significant increase in any of the studied mood parameters.


European Neuropsychopharmacology | 2013

The use of dehydroepiandrosterone in the treatment of hypoactive sexual desire disorder: A report of gender differences

Miki Bloch; Hadas Meiboom; Inbar Zaig; Shaul Schreiber; Liora Abramov

Data regarding the efficacy of dehydroepiandrosterone (DHEA) in the treatment of hypoactive sexual desire disorder (HSDD) are scarce and inconsistent. We aimed to determine possible gender differences in the efficacy of DHEA as a treatment for HDSS. Postmenopausal women (n=27), and men (n=21) with HSDD, were randomized to receive either DHEA 100 mg daily or placebo for 6 weeks in a controlled, double blind study. Primary outcome measures were sexual function questionnaires. Hormone serum levels of DHEAS, total and bioavailable testosterone, estradiol, and urine levels of DHEA and androsterone were also measured. Participants on active treatment showed a significant increase in circulating serum levels of DHEAS, while bioavailable testosterone levels increased in women only. In women only, significant interaction effects were observed for sexual arousal (p<0.05), satisfaction (p<0.05), and cognition (trend; p=0.06). For arousal, a significant improvement was observed for the DHEA treated group at 6 weeks (p=0.001). Significant correlations were observed between bioavailable T and sexual cognitions, arousal and orgasm, while DHEAS was correlated with satisfaction. In the men, significant correlations were observed between testosterone and arousal (r=.45), sexual drive (r=.50) and orgasm (r=.55). In women with HSDD, DHEA treatment had a significant beneficial effect on arousal, whereas no efficacy was demonstrated in men, indicating a possible gender difference. This improvement seems to be mediated via DHEAs metabolism to testosterone. Our positive results suggest that the neurosteroid DHEA may be effective as a treatment for women with HSDD if administered at a dose of at least 100 mg per day.


Psychiatry Research-neuroimaging | 2012

Dehydroepiandrosterone treatment effects on weight, bone density, bone metabolism and mood in women suffering from anorexia nervosa—a pilot study

Miki Bloch; Sophia Ish-Shalom; Yona Greenman; Ehud Klein; Yael Latzer

We investigated the effects of the administration of dehydroepiandrosterone (DHEA) on weight, bone metabolism, bone density and clinical mood symptoms in outpatient Anorexia Nervosa (AN) patients. AN patients (n=26) were double-blindly randomized to receive DHEA (100mg) or placebo for 6 months. Outcome measures were bone mineral density (BMD) and bone mineral content (BMC) measured by dual energy X-ray absorptiometry (DXA) and metabolism indexes, steroid hormones, and mood and eating disorder symptoms measured at baseline and at the 3 and 6 months follow-up visits. Mood and eating disorder symptoms were assessed monthly by the Beck Depression Inventory, Eating Disorder Inventory and Clinical Global Improvement Scales. No treatment or treatment by time interaction was observed for any bone density measures. Deoxypiridinolyne (DPD) was positively correlated with weight (P=0.02). An increase in body mass index (BMI) in the DHEA group was significantly higher at 4 months compared to the control group (P=0.05). Improvement of mood was significantly correlated with weight only in the DHEA group. Despite a significant decrease in DPD, no improvement in bone mineral density was detected. However, patients treated with DHEA benefited from a significant increase in BMI, which was positively correlated with improvement in mood.


Psychoneuroendocrinology | 2011

Gonadal steroids and affective symptoms during in vitro fertilization: Implication for reproductive mood disorders

Miki Bloch; Inbar Aharonov; Irit Ben Avi; Shaul Schreiber; Ami Amit; Abraham Weizman; Foad Azem

Gonadal steroids (GSs) have been associated with the onset of a number of reproductive-related mood disorders in women, in which fluctuating or unstable hormonal levels are postulated to act as the trigger for the destabilization of mood. There is, however, rather limited direct clinical evidence that can link rapidly changing GS levels with the induction of mood symptoms. We aimed to study the effect of controlled and rapid GS fluctuations on mood in an in vivo model. Women undergoing in vitro fertilization (n=108) were assessed for depression and anxiety levels on 3 time points: during a low estradiol and progesterone baseline, during a gonadotropin stimulated estradiol-dominant phase, and after embryo transfer, during a progesterone-dominant low estrogen phase. Plasma levels for estrogen and progesterone were drawn on these time points. Symptoms of depression and anxiety significantly increased from baseline to the high estradiol levels but were not correlated with estrogen. The sharp drop from high estradiol levels at the estradiol-dominant phase to low levels at the progesterone-dominant phase was significantly correlated with rising depression scores. The rise in progesterone levels from low levels at the estradiol-dominant phase to high levels at the progesterone-dominant phase was significantly and inversely correlated with depression scores. This study suggests that the mechanism underlying the role of estrogen in reproductive-related mood disorders involves an abrupt and precipitous drop in its plasma level that can precipitate negative mood states. This finding has implications on the treatment of GS-related mood disorders.


European Neuropsychopharmacology | 2012

Psychiatric comorbidity of patients on methadone maintenance treatment with a history of sexual abuse.

Einat Peles; David Potik; Shaul Schreiber; Miki Bloch; Miriam Adelson

The aim of this study was to assess the prevalence of a history of sexual abuse and its relation to psychiatric comorbidity among former opiate addicts currently on methadone maintenance treatment (MMT). We evaluated the history of sexual abuse and current clinical obsessive compulsive disorder (OCD), dissociative identity disorder (DID), and complex posttraumatic distress disorder (cPTSD), and administered the Life Events Inventory Questionnaire among 125 MMT patients (76 females and 49 males). Eighty (64%) patients had experienced sexual abuse, 69 (55.2%) met the criteria for clinical OCD, 20 (16.0%) for cPTSD and 13 (10.4%) for DID. More females had clinical OCD than males (63.2% vs. 42.9%, respectively, p=0.03). Sexually abused patients had higher rates of clinical OCD than their non-abused counterparts (67.5% vs. 33.3%, respectively, p<0.0005) and a higher mean number of negative life events (8.0±2.0 vs. 7.1±1.8, p=0.01). Sexually abused patients showed a trend towards a higher Dissociative Experiences Scale score (17.6±10.1 vs. 14.6±8.1, p=0.08) and rate of DID (13.8% vs. 4.4%, p=0.1), but no significant difference in the rate of cPTSD (17.5% vs. 13.3%, p=0.6) compared to non-abused subjects. The 80 sexually abused patients were mostly female (85%), and 57.5% of them were abused by a family member. In summary, more sexually abused MMT patients were diagnosed with clinical OCD and fewer with cPTSD and DID. Those with cPTSD were characterized by more negative life events, higher dissociation scores, and assaults by a family member. We conclude that sexually abused MMT patients should be screened for clinical OCD.

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Hadas Meiboom

Tel Aviv Sourasky Medical Center

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Inbar Zaig

Tel Aviv Sourasky Medical Center

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Irit Ben Avi

Tel Aviv Sourasky Medical Center

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Ami Amit

Tel Aviv Sourasky Medical Center

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Inbar Aharonov

Tel Aviv Sourasky Medical Center

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