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Dive into the research topics where Clara Pariente is active.

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Featured researches published by Clara Pariente.


Journal of the American Academy of Child and Adolescent Psychiatry | 2009

Maternal Depression and Anxiety Across the Postpartum Year and Infant Social Engagement, Fear Regulation, and Stress Reactivity

Ruth Feldman; Adi Granat; Clara Pariente; Hannah Kanety; Jacob Kuint; Eva Gilboa-Schechtman

OBJECTIVE To examine the effects of maternal depression on infant social engagement, fear regulation, and cortisol reactivity as compared with maternal anxiety disorders and controls and to assess the role of maternal sensitivity in moderating the relations between maternal depression and infant outcome. METHOD Using an extreme-case design, 971 women reported symptoms of anxiety and depression after childbirth and 215 of those at the high and low ends were reevaluated at 6 months. At 9 months, mothers diagnosed with a major depressive disorder (n = 22) and anxiety disorders (n = 19) and matched controls reporting no symptoms across the postpartum year (n = 59) were visited at home. Infant social engagement was observed during mother-infant interaction, emotion regulation was microcoded from a fear paradigm, and mothers and infants cortisol were sampled at baseline, reactivity, and recovery. RESULTS The infants of depressed mothers scored the poorest on all three outcomes at 9 months-lowest social engagement, less mature regulatory behaviors and more negative emotionality, and highest cortisol reactivity-with anxious dyads scoring less optimally than the controls on maternal sensitivity and infant social engagement. Fear regulation among the children of anxious mothers was similar to that of the controls and their stress reactivity to infants of depressed mothers. Effect of major depressive disorder on social engagement was moderated by maternal sensitivity, whereas two separate effects of maternal disorder and mother sensitivity emerged for stress reactivity. CONCLUSIONS Pathways leading from maternal depression to infant outcome are specific to developmental achievement. Better understanding of such task-specific mechanisms may help devise more specifically targeted interventions.


Fertility and Sterility | 1987

Ovarian hyperstimulation syndrome: prediction by number and size of preovulatory ovarian follicles *

Josef Blankstein; Josef Shalev; Tova Saadon; Ehud Kukia; Jaron Rabinovici; Clara Pariente; B. Lunenfeld; David M. Serr; Shlomo Mashiach

Monitoring of human menopausal gonadotropin (hMG) treatment for induction of ovulation according to either preovulatory estrogen levels or the presence of a dominant ovarian follicle was found insufficient to prevent ovarian hyperstimulation syndrome (OHS). In 65 infertile patients treated with hMG and human chorionic gonadotropin (hCG), a possible correlation between the number and size of all ovarian follicles on the day of assumed ovulation and the occurrence of OHS was evaluated in order to assess the value of ultrasonography in predicting OHS. It was found that patients with OHS had significantly more follicles at the time of hCG than patients without OHS. Mild OHS was characterized by the presence of eight to nine follicles, 68.7% of which were of intermediate size (9 to 15 mm). In moderate to severe OHS 95% of the preovulatory follicles were less than 16 mm, most of them (54.7%) less than 9 mm in diameter. It can be concluded that a specific preovulatory follicular configuration characterizes mild and severe hyperstimulation. This is important information before hCG administration and emphasizes the value of ovarian ultrasonography in predicting OHS.


Cancer | 2006

Adiponectin, ghrelin, and leptin in cancer cachexia in breast and colon cancer patients

Ido Wolf; Seigal Sadetzki; Hannah Kanety; Yulia Kundel; Clara Pariente; Nava Epstein; Bernice Oberman; Raphael Catane; Bella Kaufman; Ilan Shimon

The hormone ghrelin and the adipocytokines leptin and adiponectin participate in body weight regulation. In response to weight loss, ghrelin and adiponectin levels increase and leptin decreases. Cancer cachexia is a complex metabolic state, characterized by loss of muscle mass and adipose tissue together with anorexia. The authors hypothesized that responses of these hormones may be attenuated in cancer cachexia.


Clinical Endocrinology | 1990

HORMONAL PROFILES FOLLOWING CLOMIPHENE CITRATE THERAPY IN CONCEPTION AND NONCONCEPTION CYCLES

Zeev Shoham; Borenstein R; B. Lunenfeld; Clara Pariente

The hormonal profiles following clomiphene citrate (CC) administration during a single cycle were compared in infertile women who conceived and in those who did not. Of 41 treated patients, ovulation was assumed to have occurred in 28 and was confirmed by clinical pregnancy in five. In the 28 women who presumably ovulated, two distinct patterns of hormonal secretion were observed. A normal response was exhibited by 17 patients (including the five who became pregnant). The other 11 patients exhibited an abnormal response, characterized by significantly higher luteinizing hormone (LH)/follicle‐stimulating hormone (FSH) ratios than in the normal response group from day 9 until the occurrence of the LH peak (days 9 and 10, P > 0.05; days 11 and 12, P > 0.001), and significantly higher oestradiol (E2) levels throughout the cycle (P > 0.01). In addition, in comparison with the normal response group their LH levels during the follicular phase were significantly higher (P > 0‐05) but their LH peaks at ovulation were significantly lower (P > 0.02). Moreover, their progesterone levels, in contrast to those in the normal response group, began to increase prior to the LH peak and remained high during the early and mid‐luteal phases. None of the women who exhibited this abnormal gonadotrophin response to CC therapy achieved a clinical pregnancy. Exposure to high LH levels in the follicular phase following CC therapy seems to reduce the rate of fertilization and/or to contribute to early embryonic loss.


Journal of Oral and Maxillofacial Surgery | 2010

Serologic bone markers for predicting development of osteonecrosis of the jaw in patients receiving bisphosphonates.

Towy Sorel Lazarovici; Shlomit Mesilaty-Gross; Iris Vered; Clara Pariente; Hannah Kanety; Navot Givol; Ran Yahalom; Shlomo Taicher; Noam Yarom

PURPOSE Osteonecrosis of the jaw is a well-documented side effect of bisphosphonate (BP) use. Attempts have recently been made to predict the development of bisphosphonate-related osteonecrosis of the jaw (BRONJ). We prospectively investigated the predictive value of serum levels of C-terminal telopeptide of collagen I (CTX), bone-specific alkaline phosphatase, and parathyroid hormone for the development of BRONJ. PATIENTS AND METHODS Data on the demographics, comorbidities, and BP treatment were collected from 78 patients scheduled for dentoalveolar surgery. Of the 78 patients, 51 had been treated with oral BPs and 27 had been treated with frequent intravenous infusions of BPs. Blood samples for CTX, bone-specific alkaline phosphatase, and parathyroid hormone measurements were taken preoperatively. Surgery was performed conservatively, and antibiotic medications were prescribed for 7 days. RESULTS Of the 78 patients, 4 patients taking oral BPs (7.8%) and 14 receiving intravenous BPs (51.8%) developed BRONJ. A CTX level less than 150 pg/mL was significantly associated with BRONJ development, with an increased odds ratio of 5.268 (P = .004). The bone-specific alkaline phosphatase levels were significantly lower in patients taking oral BPs who developed BRONJ. The parathyroid hormone levels were similar in patients who did and did not develop BRONJ. CONCLUSION The incidence of BRONJ after oral surgery involving bone is greater among patients receiving frequent, intravenous infusions of BPs than among patients taking oral BPs. Although the measurement of serum levels of CTX is not a definitive predictor of the development of BRONJ, it might have an important role in the risk assessment before oral surgery.


Fertility and Sterility | 1990

Can growth hormone increase, after clonidine administration, predict the dose of human menopausal hormone needed for induction of ovulation?

Yehezkeal Menashe; B. Lunenfeld; Clara Pariente; Yair Frenkel; Shlomo Mashiach

Recent observations claimed that growth hormone (GH) administration increased the sensitivity of the ovary to gonadotropin stimulation. These findings prompted us to assess whether ovarian response to human menopausal gonadotropin (hMG) is correlated to GH reserve. Before hMG administration, 25 patients were tested for GH reserve by administration of clonidine. Of the 25 patients, 8 showed a significant increase in GH (9.2 +/- 4.5 ng/mL) and needed a significantly lower dose of hMG/human chorionic gonadotropin to elicit a good ovarian response than the 17 patients who did not respond to clonidine administration may help to estimate the initial dose range of hMG necessary for induction of ovulation.


The Cardiology | 2001

Serum Leptin Levels Increase following Acute Myocardial Infarction

Simcha R. Meisel; Martin Ellis; Clara Pariente; Hanna Pauzner; Morton Liebowitz; Daniel David; Ilan Shimon

Leptin is secreted into the circulation and communicates the peripheral nutritional status to specific hypothalamic centers. Recent studies suggest that leptin may be involved in the acute response to stress, and that its interaction with the hypothalamo-pituitary-adrenal axis and the inflammatory cytokine system may be of clinical importance. Since these systems are activated during acute myocardial infarction (AMI), we studied leptin and cortisol levels during hospitalization in 30 consecutive patients admitted for AMI. The results show that leptin reached its peak on the second day of hospitalization, with a 2-fold increase from its baseline level on admission (p < 0.02). On day 3, leptin levels declined, and were 46%, 9%, and 6% above baseline on days 3, 4 and 5, respectively. The mean cortisol level was elevated on day 1 and decreased toward normal levels thereafter (p < 0.001). The cortisol level did not correlate with leptin concentration throughout the study. These findings suggest that leptin may have a role in the metabolic changes taking place during the first days after an AMI.


European Journal of Endocrinology | 2009

Total and high molecular weight adiponectin are elevated in patients with Laron syndrome despite marked obesity.

Hannah Kanety; Rina Hemi; Shira Ginsberg; Clara Pariente; Eleanor Yissachar; Ehud Barhod; Tohru Funahashi; Zvi Laron

OBJECTIVE Patients with Laron syndrome (LS; primary GH insensitivity) caused by molecular defects of the GH receptor gene, are characterized by dwarfism, profound obesity, and hyperlipidemia. The aim of the current study was to evaluate adiponectin levels in LS, as obesity is known to be associated with low adiponectin. DESIGN AND METHODS We studied nine untreated LS adult patients (5 males, 4 females) and six girls with LS receiving once-daily treatment by IGF1. Total and high molecular weight (HMW) adiponectin levels, adiponectin multimers distribution, and metabolic indices were analyzed in serum samples obtained during several years of follow-up. RESULTS Adiponectin levels in the severely obese adult LS patients (percent body fat; females 61.0+/-2.5%, males 40.6+/-8.1%) were two- to three-fold higher than those reported for subjects of corresponding age, gender and degree of adiposity. Total adiponectin was significantly higher in females compared with males (21.4+/-3.5 vs 10.2+/-4.6 microg/ml, P<0.001). The elevated adiponectin in LS subjects was associated with an increased abundance of the HMW isoform, and positively correlated with body fat percentage (r=0.65, P=0.017) and leptin (r=0.65, P=0.012). There was no correlation between adiponectin levels (total and HMW) and the degree of insulin resistance in LS subjects or their blood lipids levels. Adiponectin was also high in young girls with LS (22.9+/-7.4 microg/ml) and did not change during long-term IGF1 replacement therapy. CONCLUSION Adiponectin hypersecretion in LS, despite profound obesity, suggests that GH activity may negatively impact adiponectin secretion from adipocytes.


Fertility and Sterility | 1987

Estrogen receptor binding material in blood of patients after clomiphene citrate administration: determination by a radioreceptor assay.

Avraham Geier; B. Lunenfeld; Clara Pariente; Shlomo Kotev-Emeth; Ariela Shadmi; Ehud Kokia; Josef Blankstein

The aim of the current study was to assess whether clomiphene citrate (CC) and/or active metabolites are present at presumed time of ovulation, nidation, or steroid-sensitive organogenesis, in serum of patients receiving CC for induction of ovulation. A radioreceptor assay, based on competitive replacement of 3H-estradiol on the rat uterus estrogen receptor, by ligands present in serum of patients after CC administration, was developed. Ligands reached maximal concentration 4 to 5 hours after a single dose of CC was administered, and declined with a half-life of 4.5 to 10 hours. In patients receiving CC on day 5 to day 9 in the cycle, ligands are still present on day 14 in the cycle and in some patients on day 22 of the cycle, but no ligands were detected 60 days after CC treatment.


The Journal of Clinical Endocrinology and Metabolism | 2009

Adiponectin and Leptin Concentrations in Dichorionic Twins with Discordant and Concordant Growth

Shali Mazaki-Tovi; Hannah Kanety; Clara Pariente; Rina Hemi; Yoav Yinon; Amir Wiser; Eyal Schiff; Eyal Sivan

CONTEXT Discordant twin gestation, in which one fetus is growth restricted, is a unique model that can elucidate the mechanism(s) by which the intrauterine environment affects fetal growth. OBJECTIVE The objective of the study was to determine the cord blood adiponectin and leptin concentrations and evaluate their association with birth weight in dichorionic twins, with and without growth discordance. DESIGN, SETTING, PARTICIPANTS, AND MAIN OUTCOME MEASURE: In this cross-sectional study, arterial cord blood adiponectin and leptin concentrations were determined in two groups of newborns: 1) discordant twins, in which one of the twins is growth restricted (small for gestation age and abnormal umbilical arteries Doppler) and the other is appropriate for gestation age (AGA) (n = 14 pairs); and 2) concordant twins, in which both twins are AGA (n = 15 pairs). RESULTS Results were: 1) within the discordant twins group, the median adiponectin concentration was significantly lower in the growth-restricted newborns than in their cotwins (P = 0.004); 2) within the concordant twin group, there was no significant difference in the median cord blood adiponectin concentration between the two AGA twins; 3) the median leptin concentration did not differ between the twins pairs in both study groups; 4) a positive correlation between cord blood adiponectin concentrations and both birth weight (r = 0.7, P < 0.001) and gestational age (r = 0.6, P < 0.02) was found only in the small-for-gestational-age newborns; 5) linear regression model revealed that birth weight is independently associated with circulating adiponectin concentration. CONCLUSIONS Low circulating adiponectin concentrations, previously reported in adults, children, and infants who were born small for gestational age, characterize fetuses with growth restriction and are independently associated with birth weight.

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