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Several risk factors are associated with fetal asphyxia. The main aim of this retrospective, analytical, case-control study was to determine whether assisted reproductive technologies (ART) could be considered one of these factors. In total, 162 cases of fetal asphyxia were compared to 361 controls where this event did not occur. We included 32 ART pregnancies, of which 12 were obtained through egg donations. Overall, 75% (24) of ART pregnancies experienced fetal asphyxia, suggesting ART increases the risk of fetal asphyxia by about 7 times. This finding is consistent with the literature. The pathogenesis of fetal asphyxia in ART pregnancies is currently unknown. Accordingly, this topic should be further investigated.
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Técnicas Reproductivas Asistidas , Humanos , Femenino , Estudios Retrospectivos , Embarazo , Técnicas Reproductivas Asistidas/efectos adversos , Estudios de Casos y Controles , Italia/epidemiología , Adulto , Asfixia Neonatal , Factores de Riesgo , Recién NacidoRESUMEN
Pregnancy at advanced maternal age (AMA) is a condition of potential risk for the development of maternal-fetal complications with possible repercussions even in the long term. Here, we analyzed the changes in plasma redox balance and the effects of plasma on human umbilical cord mesenchymal cells (hUMSCs) in AMA pregnant women (patients) at various timings of pregnancy. One hundred patients and twenty pregnant women younger than 40 years (controls) were recruited and evaluated at various timings during pregnancy until after delivery. Plasma samples were used to measure the thiobarbituric acid reactive substances (TBARS), glutathione and nitric oxide (NO). In addition, plasma was used to stimulate the hUMSCs, which were tested for cell viability, reactive oxygen species (ROS) and NO release. The obtained results showed that, throughout pregnancy until after delivery in patients, the levels of plasma glutathione and NO were lower than those of controls, while those of TBARS were higher. Moreover, plasma of patients reduced cell viability and NO release, and increased ROS release in hUMSCs. Our results highlighted alterations in the redox balance and the presence of potentially harmful circulating factors in plasma of patients. They could have clinical relevance for the prevention of complications related to AMA pregnancy.
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Edad Materna , Células Madre Mesenquimatosas , Óxido Nítrico , Oxidación-Reducción , Especies Reactivas de Oxígeno , Sustancias Reactivas al Ácido Tiobarbitúrico , Cordón Umbilical , Humanos , Femenino , Embarazo , Adulto , Células Madre Mesenquimatosas/metabolismo , Especies Reactivas de Oxígeno/metabolismo , Óxido Nítrico/metabolismo , Óxido Nítrico/sangre , Sustancias Reactivas al Ácido Tiobarbitúrico/metabolismo , Cordón Umbilical/citología , Cordón Umbilical/metabolismo , Glutatión/metabolismo , Glutatión/sangre , Supervivencia Celular , Estrés Oxidativo , Plasma/metabolismoRESUMEN
Background and Objective: Menopause can be associated with many clinical manifestations: vasomotor symptoms, urogenital problems, and additional psychological disturbances, such as anxiety, mood changes, and sleep alterations. The prolonged lack of hormones also increases the risk of long-term consequences. Hormone Replacement Treatment (HRT) in menopause consists of the administration of estrogen, alone or associated to progesterone, to relieve these uncomfortable disturbances and to prevent the onset of other pathologic conditions. The aim of this study is to examine the prevalence of HRT use in a sample of menopausal women and their experience with menopause and HRT. This study also investigates the knowledge of general practitioners (GPs) and gynecologists about HRT and its prescription. Materials and Methods: We conducted a cross-sectional population survey on 126 women of 50-59 years in an industrial city in the North of Italy, Vercelli (Novara), in Eastern Piedmont. We also presented a questionnaire on the topic to 54 medical doctors (GPs and gynecologists) of the same area. Results: The prevalence of HRT use in our sample was 11.9%. In total, a good percentage of the users affirmed to be satisfied with HRT. Additionally, a minority of women reported being ideally against the use of replacement hormones, were advised against using HRT by doctors, and did not use it because of the fear of side effects. We found a positive association between patient education, health care attitude, and HRT usage. A significant number of women knew about HRT from the media, and most of them were not informed by a health professional. Despite this, the interviewed doctors considered their knowledge about HRT as 'good' and would recommend HRT: only 5.6% would not prescribe it. Conclusions: Our results highlight the need for information about HRT among patients and health professionals, along with the need for more effective communication, evaluation, and suggestion of treatment.
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Menopausia , Humanos , Femenino , Persona de Mediana Edad , Menopausia/psicología , Estudios Transversales , Italia/epidemiología , Encuestas y Cuestionarios , Proyectos Piloto , Terapia de Reemplazo de Hormonas/estadística & datos numéricos , Terapia de Reemplazo de Hormonas/métodos , Terapia de Reemplazo de Estrógeno/estadística & datos numéricos , Terapia de Reemplazo de Estrógeno/métodos , Terapia de Reemplazo de Estrógeno/psicología , Ginecología/estadística & datos numéricos , Satisfacción del Paciente , Médicos Generales/estadística & datos numéricos , Médicos Generales/psicología , Conocimientos, Actitudes y Práctica en SaludRESUMEN
Children, women, and older people suffer different types of violence, which appears to have been exacerbated during the COVID-19 pandemic and the relative lockdown. The aim of this study is to analyze the literature about gender violence and abuse in the different ages of life and during the COVID-19 lockdown. Data were obtained from an electronic literature search using various online sources such as PubMed, Google Scholar, Science Direct and Web of Science. The terms "child abuse" were the most frequently used, followed in frequency by "gender violence," "femicide," and, lastly, "elderly abuse." The first studies considered gender-based violence as a purely physical problem, then, progressively, the analysis focused on the psychological point of view of the issue. There was a greater number of studies in 2020 about violence in comparison with previous years. The social and scientific attention to gender-based violence appeared to be very poor, especially in the case of older people abuse. It is necessary to increase general attention to the topic to correctly identify each form of abuse and to be able to take care of the subjects most at risk.
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The World Health Organization (WHO) describes gender violence as a real global health problem with a major impact not only on the victims' physical and mental health, but also on the economics of the National Health System. Gender-based violence has been also extended to all types of subjects defined as fragile: children, elderly, women, men and disabled people. Older people abuse, more frequent in women, is a far less socially debated issue, with many forms: physical, sexual, psychological, abandonment, neglect, economic-financial, pharmaceutical, discriminatory, institutional. An electronic literature research was carried out search using the keywords "elderly abuse" on various online sources. The research showed low number of results and little attention to this topic in the scientific literature. The paper highlights how the theme of older people abuse is little reported and not adequately addressed in scientific literature and in real life, being a form of violence certainly underestimated by the public.
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Abuso de Ancianos , Violencia , Masculino , Anciano , Humanos , Femenino , Ovinos , Animales , NiñoRESUMEN
BACKGROUND: Hysteroscopy plays a crucial role in diagnosing and managing various intrauterine pathologies. However, its execution can be influenced by patients' perception and understanding, which are often shaped by digital resources such as YouTubeTM. Given its popularity and accessibility, YouTubeTM has the potential to greatly influence patients' knowledge and expectations about this procedure, highlighting the need for accurate and reliable information. PURPOSE: This study aims to assess the reliability and quality of hysteroscopy information available to patients on YouTubeTM. Understanding the nature of information patients' access can help address their fears and potential misunderstandings about the procedure, consequently reducing the likelihood of suspension or postponement due to anxiety. METHODS: A comprehensive analysis of YouTubeTM was conducted, simulating the search process of a patient seeking information about hysteroscopy. The study evaluated the reliability and quality of 90 out of the first 100 hysteroscopy-related videos on YouTubeTM, scored by four gynecologists-two experienced hysteroscopists and two trainees. The videos were assessed for reliability and quality using the mDISCERN and Global Quality Scale (GQS) scores. RESULTS: The average mDISCERN and GQS scores for the evaluated videos were below the optimal three points, highlighting the lack of fluency, comprehensiveness, and reliability of the available information. Notably, while videos produced by experts, including doctors and professional channels, had higher scores, they still fell short of the minimum score of 3. These videos also were not considered more suitable for either patients or trainees. Videos that were assessed as reliable (mDISCERN ≥ 3) were observed to be longer and were more frequently produced by doctors. These videos were suggested more to trainees rather than patients. Similarly, videos deemed as fluent and comprehensive (GQS ≥ 3) were longer and were more often recommended to patients. CONCLUSIONS: While YouTubeTM is a widely used source of medical information, the quality and reliability of hysteroscopy videos on the platform are poor. The strategic use of selected, high-quality hysteroscopy videos can enhance procedure success and alleviate patient fears. However, the unsupervised discovery of information by patients could potentially lead to procedure failure or an elevated level of stress due to misleading or incorrect information.
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Difusión de la Información , Medios de Comunicación Sociales , Femenino , Embarazo , Humanos , Difusión de la Información/métodos , Grabación en Video , Reproducibilidad de los Resultados , HisteroscopíaRESUMEN
(1) Background: Aggressive angiomyxoma is a mesenchymal cancer that is rare during pregnancy. It is a neoplasm that relapses and infiltrates the nearest structures. Our aim is to evaluate the management and outcomes of an observed case, in light of the current literature. (2) Methods: We observed this condition at the "Maggiore della Carità" Hospital in Novara (Italy) in a patient with an initial twin pregnancy and a suspected pelvic mass. The words "angiomyxoma" and "pregnancy" were searched on the main online scientific search sources (PubMed, Google Scholar, Scopus, WES, and Embase, etc.). (3) Results: The patient underwent surgery with a complicated follow-up, but recent negative controls. We analyzed the literature about the topic and found only 24 similar clinical cases. (4) Conclusions: Considering the current literature, it is useful to assess an aggressive angiomyxoma in the differential diagnosis of soft masses in pregnant women. The treatment of choice is surgical excision, and vaginal delivery is feasible. The therapeutic decision depends on each case.
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Pacientes , Embarazo Gemelar , Embarazo , Femenino , Humanos , Diagnóstico Diferencial , Número de Embarazos , HospitalesRESUMEN
BACKGROUND AND AIM: Breech presentation is a condition that occurs in rare cases in pregnancy. Although guidelines recommend a cesarian section or an external cephalic version in case of breech, alternative procedures like acupuncture, are also available. Information on this approach is mostly found by patients through social media; we aimed to study content quality and the reliability of information present on YouTube™ (Google LLC, Mountain View, California, United States), one of the most popular. METHODS: Two gynecologists and an anesthesiologist, who was qualified as an acupuncturist, rated the reliability and the content quality of 23 of the first 100 results from YouTube. Normal data distribution was tested with the Shapiro-Wilk test. General features of videos, reliability, and content quality were compared with the Wilcoxon-Mann-Whitney test (continuous variables) and the Chi-square test (categorical variables). All tests were two-sided, and the statistical significance level was determined at p<0.05. RESULTS: Concerning reliability, all videos were rated poorly while only one was judged as sufficiently high in quality content. Lower scores in terms of reliability and content quality resulted from the reviewers' evaluation with no videos reported as suggestable to patients. Two videos were considered fit to be suggested to patients by the gynecologist reviewers. CONCLUSIONS: Information about the role and the success rate of acupuncture for converting breech presentation found on YouTube are poorly reliable, low-quality, and not valid for patients. It should be a physician's duty to provide correct information to patients.
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Fetal well-being in labor could be assessed trough cardiotocography (CTG). Some doubts have been raised about its unequivocal applicability. Pathological CTG is in most cases connected to fetal acidosis at birth, but other potential causes must be considered in the differential diagnosis. A 31-years-old G2P1 patient referred to our Department of Obstetrics and Gynecology for her scheduled post-term CTG at 40 weeks and 3 days of gestation. The pregnancy was uneventful. CTG was classified as suspicious, and after pharmacological induction, it switched as pathological: an emergency cesarean section was performed. Venous and arterial blood sample taken from the umbilical cord were normal. The next assessments revealed that Atrial Flutter (AFL) occurred at birth. Suspicious CTG is not always associated to neonatal asphyxia. Cardiotocography can help not only in the evaluation of fetal distress, but also in the assessment of global fetal cardiac activity. The presence of a fetal heart defect should be considered when CTG is suspicious.
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Acidosis , Cardiotocografía , Humanos , Recién Nacido , Embarazo , Femenino , Adulto , Cesárea , Amigos , Resultado del Embarazo , Acidosis/diagnósticoRESUMEN
To date, the impact of the COVID-19 pandemic on the world's health, economics and politics is still heavy, and efforts to mitigate virus transmission have caused remarkable disruption. From the early onset of the pandemic, generated by SARS-CoV-2 spread, the scientific community was aware of its impact on vulnerable individuals, including pregnant women. The purpose of this paper is to highlight scientific pitfalls and ethical dilemmas emerging from management of severe respiratory distress in pregnant women in order to add evidence to this topic through an ethical debate. In the here-presented paper, three cases of severe respiratory syndrome are analyzed. No specific therapeutic protocol was available to guide physicians in a cost-benefit balance, and unequivocal conduct was not a priori suggested from scientific evidence. However, vaccines' advent, viral variants lurking on the horizon and other possible pandemic challenges make it necessary to maximize the experience gained through these difficult years. Antenatal management of pregnancies complicated by COVID-19 infection with severe respiratory failure is still heterogeneous and ethical concerns must be pointed out.
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BACKGROUND: In case of suspicious CTG in labor a conservative attitude is recommended, when possible, through intrauterine resuscitation maneuvers. AIMS: This study aims to evaluate the use of intrauterine resuscitation maneuvers (IRM) at two Italian hospitals; the secondary outcome is the assessment of the agreement in their application. MATERIALS AND METHODS: Retrospective analysis was performed on the data of 80 deliveries (40 vs 40) from two different Italian hospitals, located in Novara (group 1) and in Borgomanero (group 2). In order to evaluate a varied series of CTG traces (normal and pathological), we randomly extracted 13 cases of neonatal asphyxia (2015-2020). The normal CTG traces were identified among the deliveries of the same day of these cases, in a ratio of 1: 4. One gynecologist and one midwife for the group 1 and one other gynecologist and one midwife for the group 2 were given a file with anonymous patient's clinical data, and the CTG registered during labor. Then, they classified the CTG trace, and they stated what they would have done if they had been present. RESULTS: Maternal position was changed for 58 patients, especially in group 2 (25/40 vs 33/40) (p = 0.046). Intravenous fluid administration was performed for 35 patients, more in group 2 (8/40 vs 27/40) (p < 0.001). Oxytocin was used for 21/80 patients: in 7/21 cases were discontinued (p = 0.241). Clark's test was used only in 2 cases, in group 2. No one used tocolysis, oxygen, or amnioinfusion. The concordance rate among operators showed poor agreement regarding the use of IRM, group 2 showed increased general concordance rates. CONCLUSIONS: The use of IRM in labor is recommended but underused and with poor concordance rate in the application, based on our results.
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Asfixia Neonatal , Cardiotocografía , Asfixia Neonatal/complicaciones , Asfixia Neonatal/terapia , Cardiotocografía/métodos , Salas de Parto , Femenino , Frecuencia Cardíaca Fetal , Humanos , Recién Nacido , Embarazo , Estudios RetrospectivosRESUMEN
Progesterone and some of its metabolites are neuroactive steroids that affect sleep by increasing melatonin secretion and stimulating GABA-A receptors. The effect of progestogens in hormonal contraceptives on sleep has not been thoroughly investigated. This observational study assessed possible associations in sleep changes induced by estrogen-progestogens in contraceptives in 108 women between the ages of 20 and 50 years. We assessed mean nightly sleep time with a 31-day sleep diary, and subjective sleep quality with the five subjective subscores of the Pittsburgh Sleep Quality Index (PSQI). Included women were of childbearing age, healthy, sexually active and had been using a hormonal contraceptive method (pill, intrauterine system (IUS), subcutaneous implant, vaginal ring) for at least six months. Results were compared to a matched control group that did not use hormonal contraceptives. The longest mean nightly sleep time, compared to control (450 min), occurred in women who used progestogen-only oral contraception (510 min), followed by IUS delivery of levonorgestrel 13.5 mg (480 min) and oral ethinylestradiol 0.02/0.03 mg plus gestodene 0.075 mg (475 min). Global subjective sleep quality was influenced most by the administration of etonorgestrel 0.120 mg/ethinylestradiol 0.015 mg via the vaginal route. Our results show that low-doses of progestins affect various aspects of sleep, and that this is influenced by the route of administration.
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Anticonceptivos Hormonales Orales/farmacología , Levonorgestrel/farmacología , Progestinas/farmacología , Sueño/efectos de los fármacos , Adulto , Estudios Transversales , Femenino , Humanos , Persona de Mediana Edad , Adulto JovenRESUMEN
Background: Different techniques have been analyzed to reduce the risk of perineal trauma during labor.Objective: To evaluate whether perineal massage techniques during vaginal delivery decreases the risk of perineal trauma.Search strategy: Electronic databases (Medline, Prospero, Scopus, ClinicalTrials.gov, Embase, ScienceDirect, the Cochrane Library, SciELO) were searched from their inception until February 2018. No restrictions for language or geographic location were applied.Selection criteria: We included all randomized controlled trials (RCTs) comparing the use of perineal massage during labor (i.e. intervention group) with a control group (i.e. no perineal massage) in women with singleton gestation and cephalic presentation at ≥36 weeks. Perineal massage was defined as massage of the posterior perineum by the clinician's fingers (with or without lubricant). Trials on perineal massage during antenatal care, before the onset of labor, or only in the early part of the first stage, were not included.Data collection and analysis: All analyses were done using an intention-to-treat approach. The primary outcome was severe perineal trauma, defined as third and fourth degree perineal lacerations. Meta-analysis was performed using the random-effects model of DerSimonian and Laird to produce summary treatment effects in terms of either a relative risk (RR) with 95% confidence interval (CI).Main results: Nine trials including 3374 women were analyzed. All studies included women with singleton pregnancy in cephalic presentation at ≥36 weeks undergoing spontaneous vaginal delivery. Perineal massage was usually done by a midwife in the second stage, during or between and during pushing time, with the index and middle fingers, using a water-soluble lubricant. Women randomized to receive perineal massage during labor had a significantly lower incidence of severe perineal trauma, compared to those who did not (RR 0.49, 95% CI 0.25-0.94). All the secondary outcomes were not significant, except for the incidence of intact perineum, which was significantly higher in the perineal massage group (RR 1.40, 95% 1.01-1.93), and for the incidence of episiotomy, which was significantly lower in the perineal massage group (RR 0.56, 95% CI 0.38-0.82).Conclusions: Perineal massage during labor is associated with significant lower risk of severe perineal trauma, such as third and fourth degree lacerations. Perineal massage was usually done by a midwife in the second stage, during or between and during pushing time, with the index and middle fingers, using a water-soluble lubricant.
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Parto Obstétrico/métodos , Laceraciones/prevención & control , Masaje/métodos , Complicaciones del Trabajo de Parto/prevención & control , Perineo/lesiones , Femenino , Humanos , Modelos Estadísticos , Embarazo , Resultado del TratamientoRESUMEN
Purpose: Different techniques have been studied to prevent the risk of perineal trauma during labor and post-partum pain. Limited information is available on the effect of Ritgen's maneuver. The aim of this review was to analyze whether Ritgen's maneuver during vaginal delivery has an effect on the risks of perineal trauma.Data sources: Electronic databases were searched from their inception until April 2018. No restrictions for language or geographic location were applied.Methods: We included all randomized controlled trials (RCTs) comparing the use of Ritgen's maneuver with a control group in women with singleton gestation and cephalic presentation at ≥37 weeks. Ritgen's maneuver was defined as an upward pressure from the coccygeal region to extend the head during vaginal delivery. Trials evaluating other technique (e.g. hands-on, perineal massage, warm compresses, etc.) were not included. All analyses were done using an intention-to-treat approach. The primary outcome was severe perineal laceration, defined as either third- or fourth-degree lacerations. Meta-analysis was performed using the random-effects model of DerSimonian and Laird to produce summary treatment effects in terms of either a relative risk (RR) with 95% confidence interval (CI).Results: Three trials including 1589 women were analyzed. Ritgen's maneuver was usually done by a midwife in the second stage during uterine contraction and/or during the crowning process. Pooled data showed no significant differences in the incidence of severe perineal lacerations (RR = 0.69, 95% CI = 0.10-4.61), and a higher risk of post-partum pain (RR = 1.95, 95% CI = 1.13-3.38).Conclusions: Ritgen's maneuver during labor is not protective for severe perineal lacerations and is associated with higher post-partum pain.
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Laceraciones , Complicaciones del Trabajo de Parto , Parto Obstétrico , Episiotomía , Femenino , Humanos , Laceraciones/prevención & control , Complicaciones del Trabajo de Parto/prevención & control , Dolor , Perineo/lesiones , Embarazo , Factores de RiesgoRESUMEN
OBJECTIVES: To evaluate the impact on metabolism, bleeding, and sexual function of Nexplanon, a subdermal implant. STUDY DESIGN: We recruited women (n=101) receiving the Nexplanon implant at two university centers in Italy between 2011 and 2016 into this prospective, observational, multicenter research trial. Participants completed the Interview for Ratings of Sexual Function (IRSF) and the Female Sexual Function Index (FSFI) questionnaires before and 3 and 6 months after the implant was inserted. In addition, all blood parameters were assessed at these visits. All women were given a menstrual diary card and a pictorial blood assessment chart to record daily any vaginal bleeding. RESULTS: The studied metabolic parameters remained in the normal range, showing no alarming modifications: minimal statistical reductions (in aspartate aminotransferase, alanine aminotransferase, total cholesterol, triglycerides, and activated partial thromboplastin time) and increases (in glucose and prothrombin activity) were observed. Changes in IRSF score over 6 months showed a significant increase in pleasure, personal initiative, orgasm, intensity of orgasm, and satisfaction, and a significant decrease in anxiety and discomfort. Mean Body Mass Index decreased, and the weekly frequency of sexual intercourse increased. CONCLUSIONS: Nexplanon showed not only a lower metabolic and bleeding impact, but also important positive effects on sexual function. It expands the range of possibilities for women, 38 and couples, in the modern concepts of sexual and reproductive wellbeing.
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Desogestrel/administración & dosificación , Orgasmo/efectos de los fármacos , Conducta Sexual/efectos de los fármacos , Hemorragia Uterina/tratamiento farmacológico , Adulto , Alanina Transaminasa/sangre , Aspartato Aminotransferasas/sangre , Índice de Masa Corporal , Colesterol/sangre , Coito , Anticonceptivos Femeninos , Femenino , Humanos , Italia/epidemiología , Menstruación/efectos de los fármacos , Tiempo de Tromboplastina Parcial , Satisfacción Personal , Encuestas y Cuestionarios , Triglicéridos/sangre , Hemorragia Uterina/sangre , Hemorragia Uterina/fisiopatología , Adulto JovenRESUMEN
Background: Vaginal application of lubricant during labor has been studied to shorten the length of the second stage of labor.Objective: To evaluate whether vaginal application of lubricant shortens the second stage of labor.Data sources: Electronic databases were searched from their inception until February 2018. No restrictions for language or geographic location were applied.Study eligibility criteria: Randomized controlled trials (RCTs) comparing the use of lubricant of the vaginal canal (i.e. intervention group) with a control group (i.e. no lubricant) in pregnant women with singleton gestation and cephalic presentation undergoing spontaneous vaginal delivery at term. Trials on other interventions that might impact second stage of labor (pushing methods, perineal massage, Ritgen's maneuver, etc.) were not included.Study appraisal and synthesis methods: All analyses were done using an intention-to-treat approach. The primary outcome was the length of the second stage of labor. Pooled analysis was performed using the random-effects model of DerSimonian and Laird to produce summary treatment effects in terms of mean difference (MD) with 95% confidence interval (CI).Tabulation, integration, and results: Three RCTs including 512 women evaluating the effect of lubricant application during labor were included in the meta-analysis. All trials included pregnant women with singleton gestations in cephalic presentation at term undergoing spontaneous vaginal delivery. One trial included only nulliparous women, while the other two included both nulliparous and multiparous women. Lubricant application started in the first stage before the active phase of labor, and was done intermittently by the midwife or the physician. A sterile gel was applied into the vaginal canal manually or with an applicator. All trials used water-soluble gel. The quantity of gel used was about 2-5 ml for each vaginal examination. There were no statistically significant differences, comparing women who received lubricant gel during labor with those who did not, in the lengths of second stage of labor (MD -7.11 min, 95% CI -15.60 to 1.38), of the first stage of labor, or of the active phase of the first stage of labor. No between-group differences were noticed in the risk of perineal lacerations, mode of delivery, and in the neonatal outcomes.Conclusion: Vaginal application of lubricant during labor does not reduce the length of the second stage of labor in pregnant women with singleton gestations undergoing an attempt at spontaneous vaginal delivery at term.
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Parto Obstétrico , Segundo Periodo del Trabajo de Parto , Lubricantes , Femenino , Humanos , EmbarazoRESUMEN
Analysis of the human placenta metabolome has great potential to advance the understanding of complicated pregnancies and deleterious fetal outcomes in remote populations, but samples preparation can present unique challenges. Herein, we introduce oven-drying as a simple and widely available method of sample preparation that will facilitate investigations of the placental metabolome from remote and under-studied populations. Placentae from complicated and uncomplicated pregnancies were prepared in three ways (oven-dried at 60 °C, fresh, lyophilized) for metabolome analysis via gas chromatography-mass spectrometry (GC-MS). Multiple computer models (e.g. PLS-DA, ANN) were employed to classify and determine if there was a difference in placentae metabolome and a group of metabolites with high variable importance in projection scores across the three preparations and by complicated vs. control groups. The analyses used herein were shown to be thorough and sensitive. Indeed, significant differences were detected in metabolomes of complicated vs. uncomplicated pregnancies; however, there were no statistical differences in the metabolome of placentae prepared by oven-drying vs. lyophilization vs. fresh placentae. Oven-drying is a viable sample preparation method for placentae intended for use in metabolite analysis via GC-MS. These results open many possibilities for researching metabolome patterns associated with fetal outcomes in remote and resource-poor communities worldwide.