Isaac Jacques Kadoch
Université de Montréal
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Featured researches published by Isaac Jacques Kadoch.
Reproductive Biomedicine Online | 2011
F. Bissonnette; Simon Phillips; J. Gunby; Hananel Holzer; N. Mahutte; P. St-Michel; Isaac Jacques Kadoch
In August 2010, the provincial government of Québec, Canada introduced funding of assisted reproduction treatment through the provincial health programme. Alongside this benefit, legislation was introduced to control assisted reproduction treatment activities in the province, including restrictions on the number of embryos that could be transferred in any one cycle. The aim of the programme was to transfer a single embryo in every cycle; multiple embryos could be transferred under suboptimal conditions but required physician justification. In the first 3 months of this programme, 1353 cycles of IVF were performed in five Québec assisted reproduction centres, with an overall clinical pregnancy rate of 32% per embryo transfer and 50% of transfers used elective single-embryo transfer (eSET). The multiple-pregnancy rate was only 3.7% per clinical pregnancy. In 2009, prior to the introduction of the programme, eSET was used in only 1.6% of embryo transfers, resulting in a multiple-pregnancy rate of 25.6%. These data demonstrate that providing provincially funded assisted reproduction treatment created an environment in which the aggressive use of eSET was not only possible, but also rapidly implemented. The result was a dramatic drop in multiple-pregnancy rates, approaching those for natural pregnancies.
Fertility and Sterility | 2009
Armand Zini; Simon Phillips; Annick Courchesne; Jason Boman; Abdulaziz Baazeem; F. Bissonnette; Isaac Jacques Kadoch; Maria San Gabriel
OBJECTIVE To examine the relationship between sperm strict morphology and sperm chromatin integrity. DESIGN Prospective study. SETTING Infertility clinic. PATIENT(S) Eighty-seven consecutive semen samples from non-azoospermic men presenting for infertility evaluation and 6 samples from fertile donors. INTERVENTION(S) Assessment of standard semen parameters and sperm chromatin structure assay (SCSA) parameters (%DFI [DNA fragmentation index] and %HDS [high DNA stainability]). Evaluation of %HDS and %DFI after treatment with dithiothreitol (a thiol-reducing agent used to decondense sperm nuclei) was also undertaken. MAIN OUTCOME MEASURE(S) Relationship between sperm strict morphology defects and SCSA parameters (%DFI and %HDS). RESULT(S) We observed significant relationships between the percentage of normal sperm forms and both %HDS (r = -0.40) and sperm motility (r = 0.32). We also found significant relationships between sperm head defects and both %HDS (r = 0.40) and sperm concentration (r = -0.39). Sperm tail, midpiece, and neck defects were not significantly related to the SCSA parameters. Treatment of spermatozoa with dithiothreitol (to induce decondensation) resulted in a substantial increase in %HDS but no measurable change in %DFI. CONCLUSION(S) The observed relationship between sperm head defects and %HDS suggests that sperm head abnormalities may, in part, be due to incomplete sperm chromatin condensation.
Fertility and Sterility | 2003
Renato Fanchin; J.oão Sabino Cunha-Filho; Luca Maria Schonauer; Isaac Jacques Kadoch; Paul Cohen-Bacri; René Frydman
OBJECTIVE To investigate whether luteal E(2) administration reduces size discrepancies of early antral follicles. DESIGN Prospective, crossover study. SETTING ART unit, Clamart, France. PATIENT(S) Sixty women and 120 cycles. INTERVENTION(S) On cycle day 3 (baseline day 3), all women underwent measurements of early antral follicles by ultrasound and serum FSH and ovarian hormones. From day 20 until the next cycle day 2, 30 of them received oral 17beta-E(2), whereas the remaining women served as controls. The day after E(2) discontinuation (E(2) day 3) or on subsequent cycle day 3 (control day 3), participants were reevaluated as on baseline day 3. MAIN OUTCOME MEASURE(S) Magnitude of follicular size discrepancies. RESULT(S) Follicular size discrepancies and follicular diameters were significantly attenuated on E(2) day 3 (3.7 +/- 0.5 mm) as compared with baseline day 3 (4.9 +/- 1.0 mm), but not in controls (5.0 +/- 0.8 vs. 4.9 +/- 0.8 mm). FSH (4.3 +/- 1.9 vs. 7.3 +/- 3.3 mIU/mL) and inhibin B (34 +/- 28 vs. 71 +/- 32 pg/mL) levels were consistently lower on E(2) day 3 than on baseline day 3 but remained unchanged in controls. CONCLUSION(S) Luteal E(2) administration reduces the size and improves the homogeneity of early antral follicles on day 3. This approach may be instrumental in synchronizing follicular development during controlled ovarian hyperstimulation.
Human Reproduction | 2014
M.P. Vélez; Mark P. Connolly; Isaac Jacques Kadoch; Simon Phillips; F. Bissonnette
STUDY QUESTION What was the clinical and economic impact of universal coverage of IVF in Quebec, Canada, during the first calendar year of implementation of the public IVF programme? SUMMARY ANSWER Universal coverage of IVF increased access to IVF treatment, decreased the multiple pregnancy rate and decreased the cost per live birth, despite increased costs per cycle. WHAT IS KNOWN ALREADY Public funding of IVF assures equality of access to IVF and decreases multiple pregnancies resulting from this treatment. Public IVF programmes usually mandate a predominant SET policy, the most effective approach for reducing the incidence of multiple pregnancies. STUDY DESIGN, SIZE, DURATION This prospective comparative cohort study involved 7364 IVF cycles performed in Quebec during 2009 and 2011 and included an economic analysis. PARTICIPANTS/MATERIALS, SETTING, METHODS IVF cycles performed in the five centres offering IVF treatment in Quebec during 2009, before implementation of the public IVF programme, were compared with cycles performed at the same centres during 2011, the first full calendar year following implementation of the programme. Data were obtained from the Canadian Assisted Reproductive Technologies Register (CARTR). Comparisons were made between the two periods in terms of utilization, pregnancy rates, multiple pregnancy rates and costs. MAIN RESULTS AND THE ROLE OF CHANCE The number of IVF cycles performed in Quebec increased by 192% after the new policy was implemented. Elective single-embryo transfer was performed in 1.6% of the cycles during Period I (2009), and increased to 31.6% during Period II (2011) (P < 0.001). Although the clinical pregnancy rate per embryo transfer was lower in 2011 than in 2009 (24.9 versus 39.9%, P < 0.001), the multiple pregnancy rate was greatly reduced (6.4 versus 29.4%, P < 0.001). The public IVF programme increased government costs per IVF treatment cycle from CAD
Journal of obstetrics and gynaecology Canada | 2010
Nikolay Anatolievich Aleksandrov; François Audibert; Marie-Josée Bédard; Michèle Mahone; François Goffinet; Isaac Jacques Kadoch
3730 to CAD
Reproductive Biomedicine Online | 2008
Isaac Jacques Kadoch; Maha Al-Khaduri; Simon Phillips; Louise Lapensée; Bernard Couturier; Robert Hemmings; F. Bissonnette
4759. Despite increased costs per cycle, the efficiency defined by the cost per live birth, which factored in downstream health costs up to 1 year post delivery, decreased from CAD
Fertility and Sterility | 2016
Pierre-Emmanuel Bouet; Hady El Hachem; Elise Monceau; Gilles Gariépy; Isaac Jacques Kadoch; Camille Sylvestre
49 517 to CAD
Reproductive Biomedicine Online | 2007
Simon Phillips; Isaac Jacques Kadoch; Louise Lapensée; Bernard Couturier; Robert Hemmings; F. Bissonnette
43 362 per baby conceived by either fresh and frozen cycles. LIMITATIONS, REASONS FOR CAUTION The costs described in the economic model are likely an underestimate as they do not factor in many of the long-term costs that can occur after 1 year of age. The information collected in the Canadian ART register precludes the calculation of cumulative pregnancy rates. WIDER IMPLICATIONS OF THE FINDINGS Our study confirms that the implementation of a public IVF programme favouring eSET not only sharply decreases the incidence of multiple pregnancy, but also reduces the cost per live birth. STUDY FUNDING/COMPETING INTEREST(S) M.P.V. holds a fellowship award from the Canadian Institutes of Health Research (CIHR). The economic analysis performed by M.P.C. was supported by an unrestricted grant from Ferring Pharmaceutical.
Fertility and Sterility | 2015
Jessica Lefebvre; R. Antaki; Isaac Jacques Kadoch; Nicola L. Dean; Camille Sylvestre; F. Bissonnette; Joanne Benoit; S. Menard; Louise Lapensée
OBJECTIVE To review the etiology, diagnosis, and management of diabetes insipidus during pregnancy. DATA SOURCES A search of the literature was performed in PubMed using key word searching and citation snowballing to identify articles published in English between January 1, 1980, and December 31, 2008, on the subject of diabetes insipidus during pregnancy. Once the articles were identified, a thorough review of all results was conducted. Results and conclusions were compiled and summarized. STUDY SELECTION We reviewed 50 studies selected using the following key words: diabetes insipidus, pregnancy, arginine vasopressin, vasopressinase. CONCLUSION Gestational diabetes insipidus is underdiagnosed because polyuria is often considered normal during pregnancy. Clinicians caring for pregnant women should consider screening for gestational diabetes insipidus, because it could be associated with serious underlying pathology.
Journal of Reproductive Immunology | 2011
Armand Zini; Josee Lefebvre; Gaelle Kornitzer; F. Bissonnette; Isaac Jacques Kadoch; Nicola L. Dean; Simon Phillips
The objective of this retrospective analysis was to evaluate the number of spontaneous ovulations occurring before oocyte retrieval in natural cycle IVF (nIVF) with and without the use of indomethacin. A total of 121 patients who underwent modified nIVF cycle between December 2003 and July 2006 were included in the study; 171 cycles without indomethacin and 84 cycles with indomethacin, started when the leading follicle reached 14 mm in size, were compared. The number of cycles with ovulation before oocyte retrieval and the number of cycles with no oocytes at retrieval were assessed with and without indomethacin. In addition, the pregnancy rates in the two groups of patients were analysed. There were 28 cycles (16%) in which ovulation occurred before oocyte retrieval in the group where no indomethacin was used and five cycles (6%) in which ovulation occurred before retrieval in the group where indomethacin was used. There was a statistically significant association between premature ovulation and indomethacin, with an odds ratio of 3.8 (95% confidence interval, 1.2-12.3). The oocyte retrieval per started cycle was 64% without indomethacin and 76% with indomethacin (P < 0.04). The clinical pregnancy rate per embryo transfer was 14% without indomethacin and 21% with indomethacin (not significant).