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Ramalho D, Correia S, Realista R, Rocha G, Alves H, Almeida L, Ferreira E, Monteiro S, Oliveira MJ, Almeida MC. Impact of pharmacological treatment of gestational diabetes on the mode of delivery and birth weight: a nationwide population-based study on a subset of singleton pregnant Portuguese women. Acta Diabetol 2022; 59:1361-1368. [PMID: 35879479 DOI: 10.1007/s00592-022-01931-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2022] [Accepted: 06/29/2022] [Indexed: 11/01/2022]
Abstract
AIMS To access the impact of increasing use of metformin on cesarean section and large for gestational age rates, when compared to insulin. METHODS A retrospective observational study was developed using data from the Portuguese National Registry, between 2011 and 2019, of 5038 Portuguese women with single pregnancies and gestational diabetes treated with metformin and/or insulin. Three groups were defined according to the therapeutic regimen adopted: g1-insulin in monotherapy (n = 3027[60.1%]); g2-metformin in monotherapy (n = 1366[27.1%]); g3-metformin and insulin (n = 645[12.8%]). Multivariate analysis was adjusted for statistically significant covariates. RESULTS The cesarean section rate in g1 was similar to g2 (g1:36.9% vs. g2:37%, p = 0.982), although g3 was associated with cesarean delivery (g3:43.6% vs. g1:36.9%, p = 0.005; g3:43.6% vs. g1:37.0%, p = 0.002), with no differences reported in the multivariate analysis adjusted for year of delivery and pregestational body mass index. A delivery of a large for gestational age newborn was less frequently observed in g2 than in g1 (g2:4.1% vs. g1:5.4%, p = 0.044) and in g3 (g2:4.1% vs. g3:9.1%, p < 0.001), and in g1, when compared to g3 (g1:5.4% vs. g3:9.1%, p < 0.001). In the multivariate analysis, g2 showed lower odds of delivering a large for gestational age newborn, compared to g1 (β = -0.511, OR = 0.596, CI95% = 0.428-0.832, p < 0.001). CONCLUSIONS The use of metformin was not associated with higher cesarean section rates, compared to insulin. Instead, it was suggested a protective role of metformin on large gestational age rates. The concomitant use of dual therapy suggests more complex pregnancies, requiring closer surveillance that mitigate serious perinatal and obstetrical outcomes.
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Affiliation(s)
- Diogo Ramalho
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal.
| | - Sara Correia
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Rodrigo Realista
- Obstetrics Department, Centro Hospitalar e Universitário de São João. Alameda Professor Hernâni Monteiro, 4200-319, Porto, Portugal
| | - Gustavo Rocha
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Helena Alves
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Lúcia Almeida
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Eva Ferreira
- Nutrition Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Sara Monteiro
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Maria João Oliveira
- Endocrinology Department, Centro Hospitalar de Vila Nova de Gaia / Espinho, Rua Conceição Fernandes S/N, 4434-502, Vila Nova de Gaia, Portugal
| | - Maria Céu Almeida
- Obstetrics Department, Maternidade Bissaya Barreto. Rua Augusta 36, 3000-045, Coimbra, Portugal
- Diabetes and Pregnancy Study Group of the Portuguese Society of Diabetology, Rua do Salitre 149, 1250-198, Lisbon, Portugal
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Picón-César MJ, Molina-Vega M, Suárez-Arana M, González-Mesa E, Sola-Moyano AP, Roldan-López R, Romero-Narbona F, Olveira G, Tinahones FJ, González-Romero S. Metformin for gestational diabetes study: metformin vs insulin in gestational diabetes: glycemic control and obstetrical and perinatal outcomes: randomized prospective trial. Am J Obstet Gynecol 2021; 225:517.e1-517.e17. [PMID: 33887240 DOI: 10.1016/j.ajog.2021.04.229] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/03/2021] [Accepted: 04/08/2021] [Indexed: 12/17/2022]
Abstract
BACKGROUND Gestational diabetes that is not properly controlled with diet has been commonly treated with insulin. In recent years, several studies have published that metformin can lead to, at least, similar obstetrical and perinatal outcomes as insulin. Nevertheless, not all clinical guidelines endorse its use, and clinical practice is heterogeneous. OBJECTIVE This study aimed to test whether metformin could achieve the same glycemic control as insulin and similar obstetrical and perinatal results, with a good safety profile, in women with gestational diabetes that is not properly controlled with lifestyle changes. STUDY DESIGN The metformin for gestational diabetes study was a multicenter, open-label, parallel arms, randomized clinical trial performed at 2 hospitals in Málaga (Spain), enrolling women with gestational diabetes who needed pharmacologic treatment. Women at the age of 18 to 45 years, in the second or third trimesters of pregnancy, were randomized to receive metformin or insulin (detemir or aspart). The main outcomes were (1) glycemic control (mean glycemia, preprandial and postprandial) and hypoglycemic episodes and (2) obstetrical and perinatal outcomes and complications (hypertensive disorders, type of labor, prematurity, macrosomia, large for gestational age, neonatal care unit admissions, respiratory distress syndrome, hypoglycemia, jaundice). Outcomes were analyzed on an intention-to-treat basis. RESULTS Between October 2016 and June 2019, 200 women were randomized, 100 to the insulin-treated group and 100 to the metformin-treated group. Mean fasting and postprandial glycemia did not differ between groups, but postprandial glycemia was significantly better after lunch or dinner in the metformin-treated-group. Hypoglycemic episodes were significantly more common in the insulin-treated group (55.9% vs 17.7% on metformin; odds ratio, 6.118; 95% confidence interval, 3.134-11.944; P=.000). Women treated with metformin gained less weight from the enrollment to the prepartum visit (36-37 gestational weeks) (1.35±3.21 vs 3.87±3.50 kg; P=.000). Labor inductions (45.7% [metformin] vs 62.5% [insulin]; odds ratio, 0.506; 95% confidence interval, 0.283-0.903; P=.029) and cesarean deliveries (27.6% [metformin] vs 52.6% [insulin]; odds ratio, 0.345; 95% confidence interval, 0.187-0.625; P=.001) were significantly lower in the metformin-treated group. Mean birthweight, macrosomia, and large for gestational age and babies' complications were not different between treatment groups. The lower cesarean delivery rate for women treated with metformin was not associated with macrosomia, large or small for gestational age, or other complications of pregnancy. CONCLUSION Metformin treatment was associated with a better postprandial glycemic control than insulin for some meals, a lower risk of hypoglycemic episodes, less maternal weight gain, and a low rate of failure as an isolated treatment. Most obstetrical and perinatal outcomes were similar between groups.
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Affiliation(s)
- María J Picón-César
- Department of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - María Molina-Vega
- Department of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - María Suárez-Arana
- Department of Obstetrics and Gynecology, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - Ernesto González-Mesa
- Department of Obstetrics and Gynecology, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain; Universidad de Málaga, Málaga, Spain
| | - Ana P Sola-Moyano
- Department of Obstetrics and Gynecology, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - Reyes Roldan-López
- Department of Neonatology, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - Francisca Romero-Narbona
- Department of Neonatology, Hospital Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Málaga, Spain
| | - Gabriel Olveira
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain; Universidad de Málaga, Málaga, Spain; CIBER de Diabetes y Enfermedades Metabólicas, Madrid, Spain.
| | - Francisco J Tinahones
- Department of Endocrinology and Nutrition, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga, Málaga, Spain; Universidad de Málaga, Málaga, Spain; CIBER de Fisiopatología de la Obesidad y la Nutrición, Madrid, Spain.
| | - Stella González-Romero
- Department of Endocrinology and Nutrition, Hospital Regional Universitario de Málaga, Instituto de Investigación Biomédica de Málaga, Málaga, Spain; CIBER de Diabetes y Enfermedades Metabólicas, Madrid, Spain
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Chaves C, Cunha F, Martinho M, Garrido S, Silva-Vieira M, Estevinho C, Melo A, Figueiredo O, Morgado A, Almeida MC, Almeida M. Metformin combined with insulin in women with gestational diabetes mellitus: a propensity score-matched study. Acta Diabetol 2021; 58:615-621. [PMID: 33459895 DOI: 10.1007/s00592-020-01665-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 12/24/2020] [Indexed: 01/22/2023]
Abstract
AIM Metformin use in gestational diabetes (GDM) is a common practice. Although its use in combination with insulin might be advantageous, it was never formally tested. We studied whether combined treatment was associated with better obstetric or neonatal outcomes compared to insulin alone. METHODS This is a retrospective study, using the Portuguese National Registry of GDM (2012-2017), of women treated with insulin ± metformin. Primary endpoints were obstetric and neonatal complications. Secondary endpoints were gestational weight gain (GWG) and insulin dose. A propensity score-matched analysis was performed to balance the distribution of age, BMI, insulin treatment duration, HbA1c, first trimester diagnosis of GDM and previous GDM or macrosomia. Women treated with metformin plus insulin and insulin only were then compared. RESULTS A total of 4034 women were treated with insulin or insulin plus metformin (10.2%). After propensity score matching, we studied two groups of 386 patients. Obstetric and neonatal complications were similar. Women treated with metformin plus insulin had 201 (52.1%) obstetric complications versus 184 (47.7%) in insulin-only group, p = 0.22; and 112 (29.0%) neonatal complications versus 96 (24.9%), p = 0.19. Patients treated with metformin plus insulin had similar GWG, excessive weight gain and insulin dose compared to the insulin-only group. CONCLUSIONS Women with GDM treated with insulin plus metformin had similar obstetric and neonatal complications, weight gained and insulin dose compared to those only treated with insulin.
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Affiliation(s)
- Catarina Chaves
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal.
| | - Filipe Cunha
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal
| | - Mariana Martinho
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal
| | - Susana Garrido
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal
| | - Margarida Silva-Vieira
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal
| | - Catarina Estevinho
- Serviço de Ginecologia e Obstetrícia do Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Anabela Melo
- Serviço de Ginecologia e Obstetrícia do Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Odete Figueiredo
- Serviço de Ginecologia e Obstetrícia do Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Ana Morgado
- Serviço de Ginecologia e Obstetrícia do Centro Hospitalar do Tâmega e Sousa, Penafiel, Portugal
| | - Maria Céu Almeida
- Serviço de Obstetrícia, Maternidade Bissaya Barreto, Centro Hospitalar e Universitário de Coimbra, Coimbra, Portugal
| | - Margarida Almeida
- Serviço de Endocrinologia do Centro Hospitalar do Tâmega e Sousa, Avenida do Hospital Padre Américo 210, 4564-007, Guilhufe, Penafiel, Portugal
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Shpakov AO. Improvement Effect of Metformin on Female and Male Reproduction in Endocrine Pathologies and Its Mechanisms. Pharmaceuticals (Basel) 2021; 14:ph14010042. [PMID: 33429918 PMCID: PMC7826885 DOI: 10.3390/ph14010042] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Revised: 01/02/2021] [Accepted: 01/06/2021] [Indexed: 02/07/2023] Open
Abstract
Metformin (MF), a first-line drug to treat type 2 diabetes mellitus (T2DM), alone and in combination with other drugs, restores the ovarian function in women with polycystic ovary syndrome (PCOS) and improves fetal development, pregnancy outcomes and offspring health in gestational diabetes mellitus (GDM) and T2DM. MF treatment is demonstrated to improve the efficiency of in vitro fertilization and is considered a supplementary drug in assisted reproductive technologies. MF administration shows positive effect on steroidogenesis and spermatogenesis in men with metabolic disorders, thus MF treatment indicates prospective use for improvement of male reproductive functions and fertility. MF lacks teratogenic effects and has positive health effect in newborns. The review is focused on use of MF therapy for restoration of female and male reproductive functions and improvement of pregnancy outcomes in metabolic and endocrine disorders. The mechanisms of MF action are discussed, including normalization of metabolic and hormonal status in PCOS, GDM, T2DM and metabolic syndrome and restoration of functional activity and hormonal regulation of the gonadal axis.
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Affiliation(s)
- Alexander O Shpakov
- I.M. Sechenov Institute of Evolutionary Physiology and Biochemistry of Russian Academy of Sciences, 194223 Saint Petersburg, Russia
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