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1.
Eur J Contracept Reprod Health Care ; 27(5): 373-383, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35862627

RESUMO

PURPOSE: Despite considerable advances in recently developed combined oral contraceptives (COCs), resulting in lower rates of adverse events while maintaining contraceptive efficacy, there is interest in further innovation. MATERIALS AND METHODS: Estetrol (E4), a native oestrogen, and progestin drospirenone (DRSP) were combined in a new COC. A European expert panel reviewed the pharmacology, efficacy, and safety and tolerability of this combination. Their findings are presented as a narrative review. RESULTS: E4 15 mg/DRSP 3 mg in a 24/4 regimen provided effective contraception with good cycle control, characterised by a predictable regular bleeding pattern and minimal unscheduled bleeding, together with a good safety profile. The combination was associated with high user satisfaction, well-being, and minimal changes in body weight. The effects on endocrine and metabolic parameters were limited, and the combination was found to have a limited impact on liver function and lipid and carbohydrate metabolism. Moreover, its effect on several haemostatic parameters was lower than that of comparators containing ethinyl oestradiol (EE) 20 µg/DRSP 3 mg and EE 30 µg/levonorgestrel 150 µg. CONCLUSION: E4 15 mg/DRSP 3 mg provides safe and effective contraception, with high user satisfaction and predictable bleeding. Further research will evaluate the long-term safety of the COC.


Assuntos
Estetrol , Hemostáticos , Anticoncepcionais Orais Combinados/efeitos adversos , Estetrol/efeitos adversos , Estrogênios , Etinilestradiol/efeitos adversos , Feminino , Humanos , Levanogestrel/efeitos adversos , Lipídeos , Progestinas
2.
Ceska Gynekol ; 87(6): 440-452, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36543594

RESUMO

PURPOSE: Despite considerable advances in recently developed combined oral contraceptives (COCs), resulting in lower rates of adverse events while maintaining contraceptive efficacy, there is interest in further innovation. MATERIALS AND METHODS: Estetrol (E4), a native oestrogen, and progestin drospirenone (DRSP) were combined in a new COC. A European expert panel reviewed the pharmacology, efficacy, and safety and tolerability of this combination. Their findings are presented as a narrative review. RESULTS: E4 15mg/DRSP 3 mg in a 24/4 regimen provided effective contraception with good cycle control, characterised by a predictable regular bleeding pattern and minimal unscheduled bleeding, together with a good safety profile. The combination was associated with high user satisfaction, wellbeing, and minimal changes in body weight. The effects on endocrine and metabolic parameters were limited, and the combination was found to have a limited impact on liver function and lipid and carbohydrate metabolism. Moreover, its effect on several haemostatic parameters was lower than that of comparators containing ethinyl oestradiol (EE) 20mg/DRSP 3 mg and EE 30mg/levonorgestrel 150mg. CONCLUSION: E4 15 mg/DRSP 3 mg provides safe and effective contraception, with high user satisfaction and predictable bleeding. Further research will evaluate the long-term safety of the COC.


Assuntos
Anticoncepcionais Orais Combinados , Estetrol , Feminino , Humanos , Anticoncepção/métodos , Anticoncepcionais Orais Combinados/efeitos adversos , Etinilestradiol/efeitos adversos
3.
Ther Umsch ; 78(8): 465-471, 2021.
Artigo em Alemão | MEDLINE | ID: mdl-34555969

RESUMO

MHT: Who benefits? Who does not benefit? Abstract. Individually adapted MHT with respect of known contra-indications possess direct preventive health effects. Moreover, reducing the incidence of diab. mell. type II further secondary preventive effects can be expected.


Assuntos
Terapia de Reposição de Estrogênios , Menopausa , Feminino , Humanos , Incidência
4.
Gynecol Endocrinol ; 36(6): 513-520, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32064971

RESUMO

The objective was to assess efficacy and safety of a combined oral contraceptive containing ethinylestradiol (EE) and levonorgestrel (LNG) in an extended-cycle vs. a conventional-cycle regimen. This first European randomized, active controlled, open, prospective, parallel-group trial was conducted in 48 German gynecological centers. 1,314 healthy, sexually active women aged 18-35 years were randomized. With an unadjusted PI of 0.483 (upper 95% CI: 1.237), the extended-cycle regimen fulfilled the contraceptive efficacy of EE/LNG, the requirements of the European Medicines Agency. The mean total number of bleeding days per year was significantly lower in the extended-cycle vs. the conventional-cycle regimen. Analyses of bleeding patterns showed a reduced total number of bleeding/spotting days per year in the extended-cycle vs. the conventional-cycle regimen. Cycle-associated complaints and AE were comparable in both groups. Both regimens were very well accepted. The extended-cycle regimen of EE/LNG was effective and well tolerated resulting in a lower number of bleeding days and a favorable bleeding pattern compared to the conventional-cycle regimen.


Assuntos
Anticoncepcionais Orais Combinados/administração & dosagem , Etinilestradiol/administração & dosagem , Levanogestrel/administração & dosagem , Ciclo Menstrual/efeitos dos fármacos , Adolescente , Adulto , Anticoncepcionais Orais Combinados/efeitos adversos , Esquema de Medicação , Combinação de Medicamentos , Etinilestradiol/efeitos adversos , Feminino , Alemanha , Humanos , Levanogestrel/efeitos adversos , Ciclo Menstrual/fisiologia , Menstruação/efeitos dos fármacos , Menstruação/fisiologia , Resultado do Tratamento , Adulto Jovem
5.
Horm Behav ; 105: 11-21, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-29981752

RESUMO

The phenomenon of gender incongruence is hypothesized to arise from a discrepant sexual development of the brain and the genitals, contingent on genetic and hormonal mechanisms. We aimed at visualizing transgender identity on a neurobiological level, assuming a higher functional similarity to individuals of the aspired rather than assigned sex. Implementing a gender perception paradigm featuring male and female voice stimuli, behavioral and functional imaging data of transmen were compared to men and women, and to transwomen, respectively. Men had decreased activation in response to voices of the other sex in regions across the frontoparietal and insular cortex, while the activation patterns of women and transmen were characterized by little or no differentiation between male and female voices. Further, transmen had a comparatively high discrimination performance for ambiguous male voices, possibly reflecting a high sensitivity for voices of the aspired sex. Comparing transmen and transwomen yielded only few differences in the processing of male compared to female voices. In the insula, we observed a pattern similar to that of men and women, the neural responses of the transgender group being in accordance with their gender identity rather than assigned sex. Notwithstanding the similarities found dependent on biological sex, the findings support the hypothesis of gender incongruence being a condition in which neural processing modes are partly incongruent with one's assigned sex.


Assuntos
Percepção Auditiva/fisiologia , Encéfalo/fisiologia , Pessoas Transgênero , Voz/fisiologia , Adulto , Comportamento/fisiologia , Mapeamento Encefálico , Discriminação Psicológica , Feminino , Disforia de Gênero/fisiopatologia , Disforia de Gênero/psicologia , Identidade de Gênero , Humanos , Masculino , Pessoa de Meia-Idade , Percepção/fisiologia , Caracteres Sexuais , Pessoas Transgênero/psicologia , Transexualidade/psicologia , Adulto Jovem
7.
Environ Res ; 148: 112-121, 2016 07.
Artigo em Inglês | MEDLINE | ID: mdl-27038832

RESUMO

BACKGROUND: Many previous studies have dealt with the effect of polychlorinated biphenyls (PCBs) on the thyroid gland, but their findings are inconsistent. One problem of these studies has been their use of cross-sectional designs. OBJECTIVES: The aim of the current study is to investigate longitudinal effects of PCBs on the thyroid gland, focusing on: morphological changes in thyroid tissue (i.e. thyroid volume), changes in thyroid hormones and in thyroid antibodies. METHODS: A total of 122 individuals (Mage=44.7) were examined over a period of four years (t(1) until t(4)). Medical history was collected via interviews, an ultrasound examination was performed and blood samples were taken to determine plasma PCB levels, thyroid stimulating hormone (TSH), free triiodthyronine (fT3), free thyroxine (fT4), thyroid peroxidase antibodies (TPOab), thyreoglobulin antibodies (TGab) and thyroid-stimulating hormone receptor antibodies (TSHRab). Rank correlation coefficients and mixed effect models were performed controlling for age and total lipids. RESULTS: There were negative correlations between higher chlorinated biphenyls and fT3, cross-sectionally as well as longitudinally. We also found an interaction effect of higher-chlorinated PCBs over time for fT4 as well as TSHRab. In case of high exposure, a decrease in fT4 and an increase in TSHRab level were found over time. In regards to the other variables, our findings yielded no clear results in the examined time period. CONCLUSION: This is the first study to shows a PCB-related effect on fT3, fT4 and TSHRab over a four year period. The data also suggest that morphological and antibody findings remain inconsistent and do not allow for unambiguous interpretation.


Assuntos
Poluentes Ambientais/sangue , Bifenilos Policlorados/sangue , Glândula Tireoide/diagnóstico por imagem , Adulto , Idoso , Idoso de 80 Anos ou mais , Autoanticorpos/sangue , Monitoramento Ambiental , Feminino , Humanos , Imunoglobulinas Estimuladoras da Glândula Tireoide/sangue , Masculino , Pessoa de Meia-Idade , Tireoglobulina/sangue , Tireoglobulina/imunologia , Tireotropina/sangue , Tiroxina/sangue , Tri-Iodotironina/sangue , Ultrassonografia , Adulto Jovem
9.
J Toxicol Environ Health A ; 75(19-20): 1241-7, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22994578

RESUMO

In a German company polychlorinated biphenyls (PCB)-containing transformers and capacitors were recycled on a large scale. Human biomonitoring revealed a high PCB body burden in workers of the recycling company, in surrounding locations of this plant, in companies in the neighborhood of this plant, and in family members of these employees. In order to clarify whether possible adverse health effects occurred or may occur in the future, a prospective surveillance program was initiated. After an extensive literature search, an interdisciplinary group of experts developed a surveillance program based on current knowledge with respect to possible adverse health effects that might occur in the recycling process of transformers and capacitors. Exposure to various hazardous substances (PCB, polychlorinated dibenzo-p-dioxins and dibenzo-furans [PCDD/F], metals, solvents) was considered. Criteria derived from human biomonitoring results of PCB were used for admission to the program. Participants in the surveillance program are first informed about risks and aims of the program. Subsequently, physicians started a detailed documentation of participants' general and occupational history, with their complaints, diseases, and nutritional habits, as well as information regarding their living areas, by means of a standardized questionnaire. In addition, separate examinations were performed to detect possible neurological, immunological, (neuro)psychological, hormonal, and skin effects. Moreover, DNA exposure as assessed by the comet assay and antioxidative status were determined. The program will be offered at yearly intervals for 3 years, and then at 5 and 10 years after program onset. Until now the program has proved to be feasible, and acceptance among workers and their families has been high. Based on the results, criteria will be developed to define adverse health effects that might be attributable to a hazardous substance exposure.


Assuntos
Poluentes Ambientais/toxicidade , Exposição Ocupacional , Bifenilos Policlorados/toxicidade , Antioxidantes/metabolismo , Análise Química do Sangue , Ensaio Cometa , Dano ao DNA , Dioxinas/análise , Dioxinas/sangue , Dioxinas/toxicidade , Dioxinas/urina , Monitoramento Ambiental , Poluentes Ambientais/análise , Poluentes Ambientais/sangue , Poluentes Ambientais/urina , Furanos/análise , Furanos/sangue , Furanos/toxicidade , Furanos/urina , Alemanha/epidemiologia , Humanos , Metais/análise , Metais/sangue , Metais/toxicidade , Metais/urina , Doenças do Sistema Nervoso/induzido quimicamente , Doenças do Sistema Nervoso/epidemiologia , Bifenilos Policlorados/análise , Bifenilos Policlorados/sangue , Bifenilos Policlorados/urina , Estudos Prospectivos , Reciclagem , Dermatopatias/induzido quimicamente , Dermatopatias/epidemiologia , Solventes/análise , Solventes/toxicidade
10.
Reprod Sci ; 28(10): 2823-2829, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-33772479

RESUMO

Neuroactive steroids such as dehydroepiandrosterone (DHEA), estradiol (E2), and progesterone (P4) are associated with structural and functional changes in the central nervous system (CNS). Measurement of steroid levels in the CNS compartments is restricted in accessibility. Consequently, there is only limited human data on the distributional equilibrium for steroid levels between peripheral and central compartments. While some neuroactive steroids including DHEA and E2 have been reported to convey excitatory and proconvulsant properties, the opposite was demonstrated for P4. We aimed to elucidate the correlation between peripheral and central DHEA, E2, and P4 levels in women at term pregnancy. CSF and serum samples of 27 healthy pregnant women (22-39 years) at term pregnancy were collected simultaneously under combined spinal and epidural anesthesia and used for DHEA ELISA and E2, and P4 ECLIA. All three neuroactive steroids were detected at markedly lower levels in CSF compared to their corresponding serum concentrations (decrease, mean ± SD, 97.66 ± 0.83%). We found a strong correlation for DHEA between its serum and the corresponding CSF levels (r = 0.65, p = 0.003). Serum and CSF levels of E2 (r = 0.31, p = 0.12) appeared not to correlate in the investigated cohort. DHEA serum concentration correlated significantly with E2 (r = 0.58, p = 0.0016) in CSF. In addition, a strong correlation was found between DHEA and E2, both measured in CSF (r = 0.65, p = 0.0002). Peripheral DHEA levels might serve as an indicator for central nervous levels of the neuroactive steroids DHEA and E2 in pregnant women.


Assuntos
Desidroepiandrosterona/sangue , Desidroepiandrosterona/líquido cefalorraquidiano , Estradiol/sangue , Estradiol/líquido cefalorraquidiano , Terceiro Trimestre da Gravidez/sangue , Terceiro Trimestre da Gravidez/líquido cefalorraquidiano , Adulto , Biomarcadores/sangue , Biomarcadores/líquido cefalorraquidiano , Feminino , Humanos , Gravidez/metabolismo , Estudos Prospectivos , Adulto Jovem
11.
Arch Public Health ; 79(1): 137, 2021 Jul 29.
Artigo em Inglês | MEDLINE | ID: mdl-34325740

RESUMO

BACKGROUND: Reduced birthweight is associated with adverse physical and mental health outcomes later in life. Children of adolescent mothers are at higher risk for reduced birthweight. The current study aimed to identify the key risk factors affecting birthweight in a well-characterized sample of adolescent mothers to inform preventive public health efforts. METHODS: Sixty-four adolescent mothers (≤ 21 years of age) provided detailed data on pregnancy, birth and psychosocial risk. Separate regression analyses with (1) birthweight and (2) low birthweight (LBW) as outcomes, and pregnancy complications, prenatal care, maternal age, substance abuse during pregnancy, socioeconomic risk, stressful life events and the child's sex as independent variables were conducted. Exploratively, a receiver operating characteristic (ROC) analysis was performed to investigate the quality of the discriminatory power of the risk factors. RESULTS: The following variables explained variance in birthweight significantly: prenatal care attendance (p = .006), pregnancy complications (p = .006), and maternal substance abuse during pregnancy (p = .044). Prenatal care attendance (p = .023) and complications during pregnancy (p = .027) were identified as significant contributors to LBW. Substance abuse (p = .013), pregnancy complications (p = .022), and prenatal care attendance (p = .044) showed reasonable accuracy in predicting low birthweight in the ROC analysis. CONCLUSIONS: Among high-risk adolescent mothers, both biological factors, such as pregnancy complications, and behavioural factors amenable to intervention, such as substance abuse and insufficient prenatal care, seem to contribute to reduced birthweight in their children, a predisposing factor for poorer health outcomes later in life. More tailored intervention programmes targeting the specific needs of this high-risk group are needed.

12.
Geburtshilfe Frauenheilkd ; 81(6): 612-636, 2021 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-34168377

RESUMO

Aim The aim of the interdisciplinary S3-guideline Perimenopause and Postmenopause - Diagnosis and Interventions is to provide help to physicians as they inform women about the physiological changes which occur at this stage of life and the treatment options. The guideline should serve as a basis for decisions taken during routine medical care. This short version lists the statements and recommendations given in the long version of the guideline together with the evidence levels, the level of recommendation, and the strength of consensus. Methods The statements and recommendations are largely based on methodologically high-quality publications. The literature was evaluated by experts and mandate holders using evidence-based medicine (EbM) criteria. The search for evidence was carried out by the Essen Research Institute for Medical Management (EsFoMed). To some extent, this guideline also draws on an evaluation of the evidence used in the NICE guideline on Menopause and the S3-guidelines of the AWMF and has adapted parts of these guidelines. Recommendations Recommendations are given for the following subjects: diagnosis and therapeutic interventions for perimenopausal and postmenopausal women, urogynecology, cardiovascular disease, osteoporosis, dementia, depression, mood swings, hormone therapy and cancer risk, as well as primary ovarian insufficiency.

13.
Geburtshilfe Frauenheilkd ; 81(2): 152-182, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-33623171

RESUMO

Aims This is an official interdisciplinary guideline published and coordinated by the German Society for Gynecology and Obstetrics (DGGG), the Austrian Society for Gynecology and Obstetrics (OEGGG) and the Swiss Society for Gynecology and Obstetrics (SGGG). The guideline was developed for use in German-speaking regions and is backed by numerous professional societies and organizations. The aim of this guideline is to provide an evidence- and consensus-based overview of the diagnostic approach and the management of hormonal contraception based on a systematic evaluation of the relevant literature. Methods To compile this S3-guideline, a systematic search for evidence was carried out in PubMed and the Cochrane Library to adapt existing guidelines and identify relevant reviews and meta-analyses. A structured evaluation of the evidence was subsequently carried out on behalf of the Guidelines Commission of the DGGG, and a structured consensus was achieved based on consensus conferences attended by representative members from the different specialist societies and professions. Recommendations Evidence-based recommendations about the advice given to women requesting contraception were compiled. The guideline particularly focuses on prescribing contraceptives which are appropriate to women's individual needs, take account of her personal circumstances, and have few or no side effects.

14.
Ther Umsch ; 66(2): 101-8, 2009 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-19180430

RESUMO

Surveys show that most women desire a change in their menstrual pattern in the sense that they would prefer less menstruations or even amenorrhea. On this behalf, there is no difference between women having spontaneous natural cycles and women taking the pill. The main reasons are less menstrual bleedings, better hygienic conditions, a better quality of life and less blood loss. In women wanting regular monthly periods, the opinion is dominant that suppression of menstrual bleedings is "unnatural". It is therefore primordial to inform women that contraceptive safety is even increased in users following the long-cycle principal and that a fertility decrease has not to be feared. The benefit of the long-cycle OC is a reduction of the hormonal fluctuations induced by the pill-free interval with its consecutive somatic and mental symptoms, as well as an increased contraceptive safety. The following cycle- and menstruation-dependent symptoms as listed as an indication for the long-cycle use: Endometriosis, hypermenorrhea, dysmenorrhea, hemorrhagic diathesis, uterine fibroma, polyzystic ovary syndrome, migraine due to estrogen-deficiency in the pill-free interval as well as premenstrual syndrome.


Assuntos
Anticoncepcionais Orais/administração & dosagem , Ciclo Menstrual/efeitos dos fármacos , Anticoncepcionais Orais/efeitos adversos , Anticoncepcionais Orais/farmacocinética , Anticoncepcionais Orais Combinados/administração & dosagem , Anticoncepcionais Orais Combinados/efeitos adversos , Anticoncepcionais Orais Combinados/farmacocinética , Esquema de Medicação , Interações Medicamentosas , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Feminino , Transtornos Hemorrágicos/tratamento farmacológico , Humanos , Leiomioma/tratamento farmacológico , Distúrbios Menstruais/tratamento farmacológico , Taxa de Depuração Metabólica , Ovulação/efeitos dos fármacos , Síndrome do Ovário Policístico/tratamento farmacológico , Síndrome Pré-Menstrual/tratamento farmacológico , Neoplasias Uterinas/tratamento farmacológico
15.
Ther Umsch ; 66(2): 117-28, 2009 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-19180432

RESUMO

Thromboembolic, cardiovascular and cerebrovascular events are age-dependent. They are extremely rare in young women. In contrast to the progestogen-only pills, oral contraceptives (OC) increase the risk of venous thrombosis. However, decisive ist the genetic predisposition. In healthy non-smokers of less than 35 years of age, the risk to suffer from a myocardial infarction or a cerebrovascular accident is not increased by OC. Risk factors play a major role in the etiology of cardiovascular diseases. A detailed personal and family history is therefore mandatory before OC are prescribed. Very rarely, blood pressure is increased by OC. Although the incidence of such an increase is very low, blood pressure has to be measured regularly in pill users. Inspite of a current opinion, weight increase is rare in OC users. It depends mainly on the individual predisposition. An increased water retention can be reduced by a combined OC containing a progestagen with an antimineralocorticoid activity. Changes in insulin and blood sugar induced by low-dose OC are minimal so that they have no clinical relevance. OC do not increase the incidence of diabetes. Adrenal and thyroid function are not influenced by OC, there is no increased incidence of prolactinomas. Asthma is no contraindication against OC. If there is a cycle-dependent aggravation of the disease, OC might be beneficial. OC have no side-effects on the eye or the ear. In women suffering from lupus erythematodes having no renal participation, no increased antiphospholipid-antibodies and showing a stable or inactive disease, low-dose OC might be used.


Assuntos
Doenças Cardiovasculares/induzido quimicamente , Anticoncepcionais Orais/efeitos adversos , Tromboembolia/induzido quimicamente , Adulto , Apetite/efeitos dos fármacos , Glicemia/metabolismo , Peso Corporal/efeitos dos fármacos , Doenças Cardiovasculares/genética , Anticoncepcionais Orais/administração & dosagem , Anticoncepcionais Orais Combinados/administração & dosagem , Anticoncepcionais Orais Combinados/efeitos adversos , Relação Dose-Resposta a Droga , Estrogênios/administração & dosagem , Estrogênios/efeitos adversos , Feminino , Humanos , Pessoa de Meia-Idade , Gravidez , Progestinas/administração & dosagem , Progestinas/efeitos adversos , Tromboembolia/genética , Adulto Jovem
16.
Ther Umsch ; 66(2): 129-35, 2009 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-19180433

RESUMO

A non-contraceptive benefit of oral hormonal contraceptives (OC) is a diminished risk for certain benign as well as malignant tumours, such as benign breast tumours, uterine fibroids and ovarian cysts. Endometriosis itself is not positively influenced by OC, but dysmenorrhea is decreased. Modern low-dose OC do not increase the risk of liver cell adenomata or carcinomata. OC do not influence melanoma. Modern data do not suggest an increased risk for breast carcinoma in OC users. Long-term use of OC leads to a decreased risk of endometrial and colorectal carcinomata. Cervical carcinoma is not influenced directly by OC, but probably indirectly through a change in sexual behaviour. There is no increase of vulvar or vaginal carcinoma, even after long-term use of OC.


Assuntos
Anticoncepcionais Orais Hormonais/efeitos adversos , Neoplasias/induzido quimicamente , Adulto , Fatores Etários , Estudos de Casos e Controles , Anticoncepcionais Orais Hormonais/administração & dosagem , Feminino , Neoplasias dos Genitais Femininos/induzido quimicamente , Neoplasias dos Genitais Femininos/genética , Humanos , Assistência de Longa Duração , Pessoa de Meia-Idade , Neoplasias/genética , Fatores de Risco , Adulto Jovem
17.
Ther Umsch ; 66(2): 93-9, 2009 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-19180429

RESUMO

Since the correlation between the amount of Ethinylestradiol (EE) and the thromboembolic risk has been recognized, the development of new oral contraceptives (OC) has been characterized by a constant lowering of the EE dosage. The consecutive decrease of ovulation inhibition has been compensated by the introduction of potent progestagens. Therefore, the contraceptive safety has been maintained in presence of less side-effects. The effect of ultra-low-dose OC on acne and seborrhea remains beneficial. The effect of ultra-low-dose OC on bone is contradictory. Because there are fundamental differences between Estradiol and EE, the thromboembolic risk is not decreased by the parenteral administration of EE. In users of the contraceptive patch, it is even increased. EE is not bound at SHBG. Because of its Ethinyl group, the inactivation of EE occurs slowly. Therefore, EE reaches the liver in a low but constant concentration where it modifies many estrogen-dependent hepatic parameters significantly. One of these is hemostasis. It is generally accepted that such changes are responsible for the increased thromboembolic risk of the contraceptive patch and vaginal ring. A reduction of the hormone-free interval of the pill to 5 or 4 days results in a complete suppression of the ovarian function, a reliable ovulation inhibition and an increase of the contraceptive efficacy in spite of a reduction of the EE dosage to 20 microg or 15 microg.


Assuntos
Anticoncepcionais Orais/administração & dosagem , Administração Cutânea , Administração Intravaginal , Adulto , Anticoncepcionais Orais/efeitos adversos , Anticoncepcionais Orais/farmacocinética , Anticoncepcionais Orais Combinados/administração & dosagem , Anticoncepcionais Orais Combinados/efeitos adversos , Anticoncepcionais Orais Combinados/farmacocinética , Relação Dose-Resposta a Droga , Esquema de Medicação , Etinilestradiol/administração & dosagem , Etinilestradiol/efeitos adversos , Etinilestradiol/farmacocinética , Feminino , Humanos , Fígado/efeitos dos fármacos , Taxa de Depuração Metabólica/fisiologia , Ovulação/efeitos dos fármacos , Fatores de Risco , Tromboembolia/sangue , Tromboembolia/induzido quimicamente , Tromboembolia/prevenção & controle , Resultado do Tratamento , Adulto Jovem
18.
Ther Umsch ; 66(2): 109-15, 2009 Feb.
Artigo em Alemão | MEDLINE | ID: mdl-19180431

RESUMO

The risk-benefit-ratio of hormonal contraception (OC) is positive in adolescents as well as in women over 40 years of age if some essential rules are respected. In adolescents, the acquirement of a normal peak bone mass has to be guaranteed by the use of the OC. The dosage of the OC has to be adapted individually to the basic hormonal situation. In women over 40, contraindications such as hypertension, obesity, smoking or dyslipidemia have to be actively excluded. In both groups of age, the risk of a correctly indicated OC is inferior to the risk of an unwanted pregnancy.


Assuntos
Anticoncepcionais Orais/administração & dosagem , Adolescente , Adulto , Fatores Etários , Densidade Óssea/efeitos dos fármacos , Anticoncepcionais Orais/efeitos adversos , Contraindicações , Relação Dose-Resposta a Droga , Feminino , Humanos , Pessoa de Meia-Idade , Gravidez , Medição de Risco , Fumar/efeitos adversos , Adulto Jovem
19.
J Clin Med ; 8(9)2019 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-31466364

RESUMO

Platelet hyperaggregability, known as sticky platelet syndrome (SPS), is a prothrombotic disorder that has been increasingly associated with pregnancy loss. In this retrospective study, we aimed to investigate the clinical and diagnostic relevance of SPS in 208 patients with infertility and unexplained pregnancy loss history. We studied 208 patients that had been referred to undergo a dose-dependent platelet aggregation response to adenosine diphosphate and epinephrine using light transmission aggregometry modified by Mammen during an 11-year period. Patients' platelet aggregation response was compared with platelet function in 29 female healthy controls of fertile age with no previous history of pregnancy loss. We found a prevalence of SPS type II (33.2%) in 208 female patients with infertility and pregnancy loss. ∆-epinephrine-induced platelet aggregation in patients with SPS was significantly decreased (median 7% and range -21 to 43%) compared to patients without SPS (median 59%, range 7-88% and p < 0.0001) and healthy controls (median 57%, range 8-106% and p < 0.0001). The optimum SPS-diagnostic cutoff value for ∆-epinephrine aggregation was ≤32% (sensitivity 95.7%, specificity 95.2%). SPS patients with low-dose acetylsalicylic acid (ASA) therapy (n = 56) showed improved pregnancy outcome (32 pregnancies; live births n = 18 (56%)) compared to SPS patients without low-dose ASA (n = 13) (3 pregnancies; live births n = 1 (33%)). Our study demonstrates the clinical and diagnostic relevance of platelet hyperaggregation in women with infertility and pregnancy loss history. Further studies should investigate the potential of SPS as a novel decisional tool with both diagnostic and clinical implications in infertility and pregnancy loss.

20.
Transl Psychiatry ; 9(1): 159, 2019 06 04.
Artigo em Inglês | MEDLINE | ID: mdl-31164627

RESUMO

Anorexia nervosa (AN) is an often chronic, difficult to treat illness that leads to brain volume reductions in gray and white matter. The underlying pathophysiology is poorly understood, despite its potential importance in explaining the neuropsychological deficits and clinical symptoms associated with the illness. We used the activity-based anorexia model (ABA), which includes food reduction and running wheel access in female rats to study brain changes after starvation and refeeding. Longitudinal animal MRI and post-mortem brain sections confirmed a reduction in the mean brain volumes of ABA animals compared to controls. In addition, the mean number of astrocytes was reduced by over 50% in the cerebral cortex and corpus callosum, while the mean number of neurons was unchanged. Furthermore, mean astrocytic GFAP mRNA expression was similarly reduced in the ABA animals, as was the mean cell proliferation rate, whereas the mean apoptosis rate did not increase. After refeeding, the starvation-induced effects were almost completely reversed. The observation of the astrocyte reduction in our AN animal model is an important new finding that could help explain starvation-induced neuropsychological changes in patients with AN. Astrocyte-targeted research and interventions could become a new focus for both AN research and therapy.


Assuntos
Anorexia Nervosa/patologia , Astrócitos/citologia , Encéfalo/patologia , Modelos Animais de Doenças , Atividade Motora/fisiologia , Inanição/patologia , Animais , Anorexia Nervosa/diagnóstico por imagem , Anorexia Nervosa/etiologia , Astrócitos/metabolismo , Encéfalo/citologia , Encéfalo/diagnóstico por imagem , Córtex Cerebral/diagnóstico por imagem , Córtex Cerebral/patologia , Corpo Caloso/diagnóstico por imagem , Corpo Caloso/patologia , Feminino , Imageamento por Ressonância Magnética , Ratos , Ratos Wistar , Inanição/diagnóstico por imagem
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