reproductive period
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2024 ◽  
Vol 84 ◽  
Author(s):  
H. V. R. Dias ◽  
A. J. Almeida ◽  
J. A. Maia-Júnior ◽  
R. R. Ribeiro ◽  
K. A. A. Torres-Cordido ◽  
...  

Abstract The American Barn Owl (Tyto furcata) lives in urban, periurban and wild environments and feeds mainly on small rodents, meaning it has great importance in the biological control of pests. The aim of this work was to describe the reproductive, parental and eating habits of a pair of American barn owls naturally living outside a residence in the urban area of the municipality of Campos dos Goytacazes, Rio de Janeiro state, Brazil. A wood box was installed on an outside wall of the home, monitored by a video camera. A spreadsheet was created to keep track of the observations recorded. The female laid four eggs, and after an incubation period of 30-32 days all the eggs hatched, but only two chicks survived after cannibalism among the chicks. Initially, the male provided the food to the chicks and the female remained in the nest caring for the brood. After approximately a month, the female also began to leave the nest and return with prey, which was offered to the chicks, with the male also continuing this behavior. The chicks left the nest in September, 2017. The data obtained show the existence of cooperation and division of tasks between male and female owls during the reproductive period.


Insects ◽  
2022 ◽  
Vol 13 (1) ◽  
pp. 87
Author(s):  
Aonan Zhang ◽  
Ling Xu ◽  
Ziqi Liu ◽  
Jiabo Zhang ◽  
Kuijun Zhao ◽  
...  

The soybean aphid Aphis glycines Matsumura (Hemiptera: Aphididae) is a major pest of soybean and poses a serious threat to soybean production. Studies on the effect of acetamiprid on the life table parameters of A. glycines, provide important information for the effective management of this pest. We found that exposure to acetamiprid at LC50 significantly extended the mean generation time, adult pre-reproductive period, and total pre-reproduction period compared with the control, whereas exposure to acetamiprid at LC30 significantly shortened these periods. Exposure to acetamiprid at both LC30 and LC50 significantly decreased the fecundity of the female adult, net reproductive rate, intrinsic rate of increase, and finite rate of increase compared with the control. The probability of attaining the adult stage was 0.51, 0.38, and 0.86 for a newly born nymph from the LC30 acetamiprid treatment group, LC50 acetamiprid treatment group, and control group, respectively. Acetamiprid at both LC50 and LC30 exerted stress effects on A. glycines, with the LC50 treatment significantly decreased the growth rate compared with the LC30 treatment. The present study provides reference data that could facilitate the exploration of the effects of acetamiprid on A. glycines in the field.


2022 ◽  
pp. 242-248
Author(s):  
O. V. Khoperskaya ◽  
E. V. Enkova ◽  
E. V. Kiseleva ◽  
S. V. Shamarin ◽  
E. Y. Sentsova

Cervical intraepithelial neoplasia is widespread among patients of the reproductive period, the peak of the incidence occurs at a young age, often when the reproductive function has not yet been performed. The oncological alertness of the medical community is justified: the incidence of cervical cancer has increased by 24.6% over the past ten years, and in the structure of cancer mortality in the age group of 30–39 years cervical cancer occupies the 1st place accounting for 23%. Тhe same time aggressive management of the disease in patients who have not yet performed their reproductive function is associated with the loss of significant volume of cervical tissues and an increase in the frequency of premature birth. The most acute issue is the tactics of managing cervical neoplasia of the second degree of severity, when there is still hope for the regression of the disease, but at the same time there is a high risk of transition to dysplasia of the third degree of severity and subsequently to invasive cancer. The search for diagnostic markers that allow predicting the probability of regression and, conversely, the unfavorable course of the disease is the most important task solution of which will allow optimizing tactics in controversial clinical cases and avoiding unnecessary surgical aggression, improving the perinatal outcomes of patients undergoing surgical treatment. The search for new economically feasible and diagnostically valuable markers allowing us to predict the course of the disease and determine the amount of necessary surgical treatment continues, but the most significant at this moment is still the determination of the coexpression of p16 and Ki-67 in immunocytochemical studies and p16INK4a in immunohistochemical studies. The diagnostic sensitivity of determining the co-expression of p16INK4a/Ki67 is 98.5%, and the expression of p16INK4a in CIN II indicates that in 81% of cases there is a tendency to a progressive course of the disease.


2022 ◽  
Vol 24 (5) ◽  
pp. 427-432
Author(s):  
T. P. Bardymova ◽  
M. V. Shestakova ◽  
Ya. P. Sandakov ◽  
M. V. Mistiakov ◽  
M. V. Berezina

Background: Structural and metabolic disorders of bone tissue in women with T2DM have no clinical manifestations, but they are accompanied by the risk of fractures.Aim: To study the parameters of bone metabolism, BMD and microarchitectonics in female patients with T2DM in the Buryat population.Materials and methods: The observational single-center one-stage controlled study included 73 women with T2DM, which were divided into 2 groups depending on the functional state of the ovaries (reproductive and postmenopausal periods). In each group, subgroups of the Buryat and Russian populations were identified. The first group included 34 patients with T2DM of the reproductive period: 16 from the Buryat population and 18 from the Russian population. The second group consisted of 39 postmenopausal patients with T2DM: 17 from the Buryat population and 22 from the Russian population. The study of BMD in the lumbar spine (L1-L4), femoral neck (Neck), in the proximal femur (Total hip), trabecular bone score (TBS), serum osteocalcin (OC), N-terminal propeptide type 1 procollagen was carried out (P1NP), vitamin D 25 (OH), blood plasma type I collagen C-terminal telopeptide (β-Cross laps) and ionized calcium (iCa).Results: In female patients with T2DM of the reproductive age of the Buryat population, an increase in both markers of osteosynthesis P1NP (p=0.035), OC (p=0.047), and bone resorption β-Cross laps (p=0.040) was found relative to the similar group of the Russian population. In women with T2DM in the postmenopausal period of the Buryat population, there was also an increase in P1NP (p = 0.016), OC (p = 0.048), β-Cross laps (p = 0.020) compared with the group of postmenopausal women in the Russian population. Structural disorders, characterized by a decrease in TBS, were detected only in the postmenopausal period in female patients of the Buryat population compared to women in the Russian population (p = 0.029).Comparative analysis among women with T2DM of the Buryat population, depending on the functional state of the ovaries, showed that activation of bone remodeling with an increase in P1NP (p = 0.019), OC (p = 0.004) and β-Cross laps (p = 0.004) is characteristic of postmenopausal women accompanied by a decrease in BMD Neck (p = 0.006), BMD Total hip (p = 0.003), BMD L1-L4 (p = 0.049) and TBS (p = 0.020) relative to female patients with T2DM in the reproductive period.Conclusion: In women with T2DM in the Buryat population, both in the reproductive and postmenopausal periods, an increase in bone remodeling markers and BMD stability was found when compared with the corresponding groups of patients in the Russian population. The postmenopausal period was characterized by an additional decrease in TBS in patients with T2DM in the Buryat population relative to women in the Russian population.


Author(s):  
Desi Fitriani ◽  
Wayterlis Apriani

Menopause is a process of transition from a productive period to a non-productive period. This period affects the psychological aspect, reminding him that he will grow old because his reproductive organs are no longer functioning and worries about other things that may arise accompanying the end of his reproductive period. This study aims to determine the effectiveness of positive mental time travel counseling to reduce maternal anxiety in dealing with menopause in the working area of ??the Small Bridge Public Health Center. This type of research is true experiments with a posttest-only control design approach. The population of this study were all mothers aged 40-50 years. The sample in this study were 96 people, 48 experimental groups and 48 control groups. The sampling technique was accidental sampling where the sample in the study was mothers aged 40-50 years who were in the area of ??the Small Bridge Health Center. The analysis technique taken is the Paired e t-test statistical test. Univariate results, namely the average anxiety of mothers in dealing with menopause in the group given positive mental time travel counseling is 10.19. The average maternal anxiety in dealing with menopause in the group that was not given positive mental time travel counseling was 19.29. The results of the bivariate analysis obtained a p-value of 0.000 <0.005. It was concluded that positive mental time travel counseling was effective in reducing maternal anxiety in dealing with menopause in the working area of ??the Small Bridge Public Health Center. It is hoped that positive mental time travel counseling can be used as an effort to improve psychological conditions for a good quality of life for postmenopausal women.


Author(s):  
Ute Radespiel ◽  
Romule Rakotondravony ◽  
Solofonirina Rasoloharijaona ◽  
Blanchard Randrianambinina

AbstractSeasonal reproduction is widespread among primates but the degree of reproductive synchrony and plasticity can vary, even between closely related species. This study compares the dynamics of female reproductive seasonality in two mouse lemur species, Microcebus murinus and M. ravelobensis, in Ankarafantsika National Park, Madagascar, across 24 years. We collected 4321 records of female reproductive state from 1033 individual females (319 M. murinus, 714 M. ravelobensis). The analyses revealed disparate reproductive schedules: While female M. murinus showed high degrees of reproductive synchrony throughout all years, leading to the production of two successive litters, the seasonal onset of estrus (= reproductive activation) in female M. ravelobensis was more flexible than in M. murinus, starting 2-4 weeks earlier, varying by up to 4 weeks between years, and being less synchronized. M. ravelobensis females became reproductively active later in years with more rainfall, in particular rain in February, but the timing of reproductive activation was not related to differences in temperatures. The likelihood of early conception was significantly lower in M. ravelobensis than in M. murinus. This was partly due to delayed reproductive activation in young animals, and a lower likelihood of early conception for females with low body mass in M. ravelobensis. Our results suggest high, adaptive reproductive plasticity in M. ravelobensis that may enable individuals to respond flexibly to yearly environmental changes and expand the reproductive period under favorable conditions. These species differences in reproductive schedules may be the result of the divergent evolutionary histories of the two mouse lemur species in different parts of Madagascar.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Rasel Kabir ◽  
Marwa Farag ◽  
Hyun Ja Lim ◽  
Nigatu Geda ◽  
Cindy Feng

Abstract Background Despite the substantial decline in child mortality globally over the last decade, reducing neonatal and under-five mortality in Bangladesh remains a challenge. Mothers who experienced multiple child losses could have substantial adverse personal and public health consequences. Hence, prevention of child loss would be extremely desirable during women’s reproductive years. The main objective of this study was to determine the risk factors associated with multiple under-five child loss from the same mother in Bangladesh. Methods In this study, a total of 15,877 eligible women who had given birth at least once were identified from the 2014 Bangladesh Demographic and Health Survey. A variety of count regression models were considered for identifying socio-demographic and environmental factors associated with multiple child loss measured as the number of lifetime under-five child mortality (U5M) experienced per woman. Results Of the total sample, approximately one-fifth (18.9%, n = 3003) of mothers experienced at least one child’s death during their reproductive period. The regression analysis results revealed that women in non-Muslim families, with smaller household sizes, with lower education, who were more advanced in their childbearing years, and from an unhygienic environment were at significantly higher risk of experiencing offspring mortality. This study also identified the J-shaped effect of age at first birth on the risk of U5M. Conclusions This study documented that low education, poor socio-economic status, extremely young or old age at first birth, and an unhygienic environment significantly contributed to U5M per mother. Therefore, improving women’s educational attainment and socio-economic status, prompting appropriate timing of pregnancy during reproductive life span, and increasing access to healthy sanitation are recommended as possible interventions for reducing under-five child mortality from a mother. Our findings point to the need for health policy decision-makers to target interventions for socio-economically vulnerable women in Bangladesh.


Author(s):  
Andrea Prestes Nácul ◽  
Gabriela Pravatta Rezende ◽  
Daniela Angerame Yela Gomes ◽  
Técia Maranhão ◽  
Laura Olinda Bregieiro Fernandes Costa ◽  
...  
Keyword(s):  

2021 ◽  
Vol 5 (Supplement_1) ◽  
pp. 975-975
Author(s):  
Jamie Knight ◽  
Tomiko Yoneda ◽  
Nathan Lewis ◽  
Graciela Muniz-Terrera ◽  
David Bennett ◽  
...  

Abstract Decreasing estrogen levels have been hypothesized to be associated with increased risk of dementia, yet the current literature reveals conflicting results. This study aimed to determine whether a longer reproductive period, as an indicator of longer exposure to endogenous estrogens, is associated with risk of transitioning to MCI and dementia. Women 65 and over (N=1507) from the Rush Memory and Aging Project met eligibility for the current analysis. The average length of reproductive period (menopause age minus menarche age) was 35 years (range=16-68 years), and 64% had natural menopause. Multistate survival modeling (MSM) was used to estimate the influence of reproductive period on risk of transitioning through cognitive states including mild cognitive impairment (MCI) and clinically diagnosed dementia, as well as death. Multinomial regression models estimated total and cognitively unimpaired life expectancies based on the transition probabilities estimated by the MSM. Results suggest that women with more reproductive years were less likely to transition from no cognitive impairment (NCI) to MCI, and were more likely to return to NCI from MCI. Analyses also suggest two additional years free of cognitive impairment for women with 45 vs 25 years of reproduction, though reproduction period did not significantly impact overall life expectancy. This study suggests that the number of years of reproductive duration is not associated with the transition to dementia, but is possibly associated with delayed cognitive decline, reduced risk of MCI, increased likelihood of returning to NCI from MCI, and increased lifespan free of cognitive impairment.


2021 ◽  
Author(s):  
Ketan Chu ◽  
Jing Shui ◽  
Linjuan Ma ◽  
Yizhou Huang ◽  
Fan Wu ◽  
...  

Abstract Objective More than 2 billion women experiencing menopause transition in China and some of them suffered depression; while the risk factors of depression are still unclearin China. We aimed to investigate the risk factors in mid-life women in Southeast China. Method This study included 1748 Chinese women aged 40 to 65 years who visit gynecology outpatient department of Women’s hospital School of Medicine, Zhejiang University during 2010 to 2018. Demographic information was collected, and the modified Kupperman Menopausal Index (mKMI) and Hamilton Rating Scale for Depression were assessed. Circulating levels of sex hormones were obtained. Ordinal logistic regression analysis was performed to identify risk factors for depression. Results The prevalence of depression symptoms was 47.43%. The majority of women had mild (38.56%) or moderate depression symptoms (8.00%); only 0.86% had severe depression. Compared with perimenopausal women, postmenopausal women had increased risks of depression. The associations between menopausal syndromes and depression were strongly positive (OR 6.69, 95% CI 5.39–8.29). Women with older age, higher follicle stimulating hormone levels, lower estradiol levels, and fewer parity had increased risk of depression. Among postmenopausal women, underweight, mKMI > 14, earlier age at menopause, shorter reproductive period, and longer duration after menopause were risk factors for depression. Conclusions The results demonstrated a high proportion of depression in women complaining of menopause. Menopausal symptoms were strongly related to the risk of depression. In postmenopausal women, estrogen related events are associated with depression. Gynecological endocrinologists in China should consider screening for depression in high-risk women.


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