[1] |
Coughlan, C. What to do when good-quality embryos repeatedly fail to implant. Best Pract. Res. Clin. Obstet. Gynaecol. 2018, 53, 48–59.
|
[2] |
Busnelli, A.; Reschini, M.; Cardellicchio, L.; Vegetti, W.; Somigliana, E.; Vercellini, P. How common is real repeated implantation failure? An indirect estimate of the prevalence. Reprod. Biomed. Online. 2020, 40 , 91–97.
|
[3] |
Simon, A.; Laufer, N. Repeated implantation failure: clinical approach. Fertil. Steril . 2012, 97 , 1039–1043.
|
[4] |
Lédée-Bataille, N.; Laprée-Delage, G.; Taupin, J.L.; Dubanchet, S.; Frydman, R.; Chaouat, G. Concentration of leukaemia inhibitory factor (LIF) in uterine Flushing fluid is highly predictive of embryo implantation. Hum. Reprod. 2002, 17 , 213–218.
|
[5] |
Lessey, B.A.; Young, S.L. What exactly is endometrial receptivity? Fertil. Steril . 2019, 111 , 611–617.
|
[6] |
Mercé, L.T.; Barco, M.J.; Bau, S.; Troyano, J. Are endometrial parameters by three-dimensional ultrasound and power Doppler angiography related to in vitro fertilization/embryo transfer outcome? Fertil. Steril . 2008, 89 , 111–117.
|
[7] |
Silva Martins, R.; Helio Oliani, A.; Vaz Oliani, D.; Martinez de Oliveira, J. Subendometrial resistence and pulsatility index assessment of endometrial receptivity in assisted reproductive technology cycles. Reprod. Biol. Endocrinol . 2019, 17 , 62.
|
[8] |
Chwalisz, K.; Garfield, R.E. Role of nitric oxide in implantation and menstruation. Hum. Reprod. 2000, 15 , 96–111.
|
[9] |
Zicari, A.; Centonze, C.; Realacci, M.; Buchetti, B.; Pietropolli, A.; Ticconi, C. Estradiol 17-beta and progesterone modulate inducible nitric oxide synthase and high mobility group box 1 expression in human endometrium. Reprod. Sci . 2008, 15 , 559–566.
|
[10] |
Yoshiki, N.; Kubota, T.; Aso, T. Expression and localization of inducible nitric oxide synthase in human non-pregnant and early pregnant endometrium. Mol. Hum. Reprod . 2000, 6 , 283–287.
|
[11] |
Khazaei, M.; Roshankhah, S.; Ghorbani, R.; Chobsaz, F. Sildenafil effect on nitric oxide secretion by normal human endometrial epithelial cells cultured in vitro. Int. J. Fertil. Steril . 2011, 5 , 142–147.
|
[12] |
Sher, G.; Fisch, J.D. Vaginal sildenafil (Viagra): a preliminary report of a novel method to improve uterine artery blood flow and endometrial development in patients undergoing IVF. Hum. Reprod. 2000, 15 , 806–809.
|
[13] |
Bolnick, J.M.; Kilburn, B.A.; Bolnick, A.D.; Diamond, M.P.; Singh, M.; Hertz, M.; Dai, J.; Armant, D.R. Sildenafil stimulates human trophoblast invasion through nitric oxide and guanosine 3 ' , 5 ' -cyclic monophosphate signaling. Fertil. Steril . 2015, 103 , 1587–1595.e2.
|
[14] |
Sher, G.; Fisch, J.D. Effect of vaginal sildenafil on the outcome of in vitro fertilization (IVF) after multiple IVF failures attributed to poor endometrial development. Fertil. Steril . 2002, 78 , 1073–1076.
|
[15] |
Dunn, L.; Greer, R.; Flenady, V.; Kumar, S. Sildenafil in pregnancy: a systematic review of maternal tolerance and obstetric and perinatal outcomes. Fetal Diagn. Ther . 2017, 41 , 81–88.
|
[16] |
Panda, S.; Das, A.; Nowroz, H.M. Sildenafil Citrate in Fetal Growth Restriction. J. Reprod. Inf. 2014, 15 , 168–169.
|
[17] |
Gonen, Y.; Casper, R.F. Prediction of implantation by the sonographic appearance of the endometrium during controlled ovarian stimulation for in vitro fertilization (IVF). J. Vitro Fertil. Embryo Transf . 1990, 7 , 146–152.
|
[18] |
Applebaum, M. The uterine biophysical profile. Ultrasound Obstet. Gynecol . 1995, 5 , 67–68.
|
[19] |
Adamson, G.D.; de Mouzon, J.; Chambers, G.M.; Zegers-Hochschild, F.; Mansour, R.; Ishihara, O.; Banker, M.; Dyer, S. International Committee for Monitoring Assisted Reproductive Technology: world report on assisted reproductive technology, 2011. Fertil. Steril . 2018, 110 , 1067–1080.
|
[20] |
Lemmen, J.G.; Rodríguez, N.M.; Andreasen, L.D.; Loft, A.; Ziebe, S. The total pregnancy potential per oocyte aspiration after assisted reproduction-in how many cycles are biologically competent oocytes available? J. Assist. Reprod. Genet . 2016, 33 , 849–854.
|
[21] |
Wang, L.; Qiao, J.; Li, R.; Zhen, X.; Liu, Z. Role of endometrial blood flow assessment with color Doppler energy in predicting pregnancy outcome of IVF-ET cycles. Reprod. Biol. Endocrinol . 2010, 8 , 122.
|
[22] |
Wang, L.; Su, X.S.; Qiao, J.; Li, R.; Zhen, X.M.; Wang, L.Y. Role of endometrial blood flow assessment with color doppler energy in predicting pregnancy outcome of fet cycles. Chin. J. Minimal. Invasive Surg . 2012, 12 , 245–249.
|
[23] |
Cameron, I.T.; Campbell, S. Nitric oxide in the endometrium. Hum. Reprod. Update. 1998, 4 , 565–569.
|
[24] |
Vega, M.; Johnson, M.C.; Villavicencio, A.; Anido, M.; Gabler, F.; Castro, A. Gene expression in apoptosis regulated by nitric oxide in human endometrium. Fertil. Steril . 2000, 74 , S193.
|
[25] |
Richter, K.S.; Bugge, K.R.; Bromer, J.G.; Levy, M.J. Relationship between endometrial thickness and embryo implantation, based on 1, 294 cycles of in vitro fertilization with transfer of two blastocyst-stage embryos. Fertil. Steril . 2007, 87 , 53–59.
|
[26] |
Refuerzo, J.S.; Sokol, R.J.; Aranda, J.V.; Hallak, M.; Hotra, J.W.; Kruger, M.; Sorokin, Y. Sildenafil citrate and fetal outcome in pregnant rats. Fetal Diagn. Ther . 2006, 21 , 259–263.
|
[27] |
Villanueva-García, D.; Mota-Rojas, D.; Hernández-González, R.; Sánchez-Aparicio, P.; Alonso-Spilsbury, M.; Trujillo-Ortega, M.E.; Ramírez Necoechea, R.; Nava-Ocampo, A.A. A systematic review of experimental and clinical studies of sildenafil citrate for intrauterine growth restriction and pre-term labour. J. Obstet. Gynaecol . 2007, 27 , 255–259.
|
[28] |
Hale, S.A.; Jones, C.W.; Osol, G.; Schonberg, A.; Badger, G.J.; Bernstein, I.M. Sildenafil increases uterine blood flow in nonpregnant nulliparous women. Reprod. Sci . 2010, 17 , 358–365.
|
[29] |
Shehata, N.A.A.; Ali, H.A.A.; Fahim, A.S.; Katta, M.A.; Hussein, G.K. Addition of sildenafil citrate for treatment of severe intrauterine growth restriction: a double blind randomized placebo controlled trial. J. Matern. Fetal Neonatal. Med . 2020, 33 , 1631–1637.
|
[30] |
Jerzak, M.; Kniotek, M.; Mrozek, J.; Górski, A.; Baranowski, W. Sildenafil citrate decreased natural killer cell activity and enhanced chance of successful pregnancy in women with a history of recurrent miscarriage. Fertil. Steril . 2008, 90 , 1848–1853.
|
[31] |
Mohamed, M.A.; Moussa, A.A.; El-Taybe, H.M. Effect of sildenafil citrate on uterine artery blood flow in patients with unexplained recurrent miscarriages: a randomized clinical trial. Egypt. J. Hosp. Med . 2019, 75 , 2958–2964.
|
[32] |
Takasaki, A.; Tamura, H.; Miwa, I.; Taketani, T.; Shimamura, K.; Sugino, N. Endometrial growth and uterine blood flow: a pilot study for improving endometrial thickness in the patients with a thin endometrium. Fertil. Steril . 2010, 93 , 1851–1858.
|
[33] |
Dehghani Firouzabadi, R.; Davar, R.; Hojjat, F.; Mahdavi, M. Effect of sildenafil citrate on endometrial preparation and outcome of frozen-thawed embryo transfer cycles: a randomized clinical trial. Iran. J. Reprod. Med . 2013, 11 , 151–158.
|
[34] |
Moini, A.; Zafarani, F.; Jahangiri, N.; Jahanian Sadatmahalleh, S.H.; Sadeghi, M.; Chehrazi, M.; Ahmadi, F. The effect of vaginal sildenafil on the outcome of assisted reproductive technology cycles in patients with repeated implantation failures: a randomized placebo-controlled trial. Int. J. Fertil. Steril . 2020, 13 , 289–295.
|
[35] |
Khan, R.N.; Hamoud, H.; Warren, A.; Wong, L.F.; Arulkumaran, S. Relaxant action of sildenafil citrate (Viagra) on human myometrium of pregnancy. Am. J. Obstet. Gynecol . 2004, 191 , 315–321.
|
[36] |
Maher, M.A.; Sayyed, T.M.; El-Khadry, S.W. Nifedipine alone or combined with sildenafil citrate for management of threatened preterm labour: a randomised trial. BJOG. 2019, 126 , 729–735.
|
[37] |
Kniotek, M.; Boguska, A. Sildenafil can affect innate and adaptive immune system in both experimental animals and patients. J. Immunol. Res . 2017, 2017 , 4541958.
|
[38] |
Shah, P.C.; Trivedi, N.A. A meta-analysis on efficacy and tolerability of sildenafil for erectile dysfunction in patients with diabetes mellitus. Indian J. Sex. Transm. Dis. AIDS. 2018, 39 , 1–6.
|