scholarly journals The Coronavirus Disease 2019 pandemic as a threat to reproductive health and fetal life

2021 ◽  
Vol 8 (9) ◽  
pp. 509-513
Author(s):  
Dilan Çetinavcı ◽  
Ahmet Uğur Akman

Objective: Covid-19 disease has spread rapidly across the world since its first appearance in 2019. At the beginning of the pandemic, Covid-19 disease was thought to affect only the respiratory system, although it has since been realized that it causes numerous transient or permanent problems in various body systems.  One of these effects involves the reproductive system. Several studies have investigated the effects of Covid-19 disease on the female and male reproductive systems. Embryological life depends on the fertilization of a healthy mature oocyte, a healthy mature sperm, and the continuation of pregnancy. The purpose of this article is to examine the effects of Covid-19 disease on the male and female reproductive systems and embryological life through a review of the current literature.

1999 ◽  
Vol 4 (1) ◽  
pp. 41-52
Author(s):  
M.S. Jillani

The debate over the relationship of population and development is now more than 200 years old, starting with the treatise on population by Malthus, in 1798. The increase in population, ever since, has remained a matter of concern for economists and development planners. The most recent high point of the issue was witnessed at Cairo in September, 1994. The conference which was attended by more than 10,000 persons from all over the world ended with an agreement on the issues involved in the growth of population and the economy. The outcome was a Plan of Action for the next twenty years, which would concentrate on Reproductive Health in order to obtain, “a state of complete physical, mental and social wellbeing, and not merely the absence of disease or infirmity in all matters relating to the reproductive system and its functions and process”. This can be a turn-around in global efforts for human health and welfare, if properly implemented.


The male and female reproductive systems in three typical species of Nematocera, order Diptera, representing the families of Chironomidae, Anisopidae and Mycetophilidae, have been studied and their development followed through the larva and pupa. A description has been given of the parts in each case in the imaginal fly, and as seen in development and a nomenclature of parts adopted in accordance with the homologies ascertained. In each case the basal plan is similar, but there is wide departure in the functional adaptations and form of the parts, so that without a study of the development the nature of some of the parts shown to be developmentally homologous would not be apparent. Briefly the reproductive system comprises in both sexes: ( a ) A primary reproductive system consisting of a pair of gonads in the sixth segment with mesodermal strands forming the primative mesodermal oviducts and vasa efferentia and linking the gonads with the ectodermal efferent ducts. ( b ) A secondary reproductive system of ectodermal origin which forms the greater part of both male and female efferent systems and which originates from hypodermal proliferative rudiments on the hypopygial segments and which may in various degrees replace by overgrowth the mesodermal ducts. ( c ) Appendicular parts forming in the male clasping organs (gonocoxites) and gonapophysial organs (paramere lobes) and also intersegmental inflexions and sclerotizations such as the atrium and vaginal apodeme in the female and the theca, penis sheath and, when present, an eversible sac or endotheca in the male. In the male recognizable homologous processes are the consecutive invaginations of the twin ejaculatory ducts and the median invagination of the penis tube, which later may be followed by a third intersegmental inflexion, that of the genital pouch excavating the penis and in Anisopus forming in its walls sclerotizations of the pompetta and piston apodeme. In the female are three recognizable invaginations, that taking origin from the eighth sternite rudiments, which conjointly by their peripodial cavity form the vagina with the spermathecal and later the common oviduct invaginations, and that from the conjoined hypodermal buds on the ninth sternite forming the caecus (the accessory glands).


1999 ◽  
Vol 48 (2) ◽  
pp. 71-78
Author(s):  
E. F. Kira

Infectious and inflammatory diseases of female genitals occupy a special place in structure of general morbidity on a planet. Their importance is caused first of all by the fact, that these illnesses involve organs and tissues concerning to reproductive system, and consequently have direct influence on reproductive function and continuation of a life in the world. In the first part of this clinical lecture ther are considered and are stated in details the modern aspects of a reproductive health problem.


1986 ◽  
Vol 76 (3) ◽  
pp. 513-517 ◽  
Author(s):  
M. F. J. Taylor ◽  
D. P. A. Sands

AbstractThe influence of ageing, larval dietary nitrogen and adult carbohydrate diets on development of the male and female reproductive systems of Samea multiplicalis Guenée are described. Mature oocytes appeared in the ovarioles of one-day-old females and remained constant in number from one to three days after eclosion. Females from larvae that fed on plants of Salvinia molesta matured fewer oocytes (65 vs. 138) when the plants had lower (0·94% vs. 2·74%) levels of nitrogen. Resorbing oocytes were identified in the ovarioles of females 1–3 days old. The proportion of females with resorbing oocytes increased with age but not with larval dietary nutrition. Following high levels of larval dietary nitrogen, the seminal vesicles in males increased in length, while their width increased with age but not with diet. High levels of larval dietary nitrogen and an intake of adult dietary carbohydrate were both necessary for maximum fecundity. Higher levels of larval dietary nitrogen resulted in greater adult size, as measured by forewing length.


1962 ◽  
Vol 40 (2) ◽  
pp. 199-229 ◽  
Author(s):  
Rita J. D. Wensler ◽  
J. G. Rempel

In both the male and female adult midge, the posterior three abdominal segments are modified for the reproductive function, and the musculature of these segments is modified accordingly. Main features of the male internal reproductive system are testes consisting of one sperm tube each, in which spermatogenesis is complete, and a glandular ejaculatory duct of four sections. The muscles of the posterior pregenital segments are modified for torsion. The muscles of the terminalia are described. Those of the ninth segment are greatly modified for the genital function. The female has numerous three-chambered polytrophic ovarioles extending radially from a common central egg passage in the ovary, and there is a single accessory gland. The muscles of the female terminalia are described. The reproductive system of several specimens parasitized by a nematode worm is discussed.


Author(s):  
M. A. Fesenko ◽  
G. V. Golovaneva ◽  
A. V. Miskevich

The new model «Prognosis of men’ reproductive function disorders» was developed. The machine learning algorithms (artificial intelligence) was used for this purpose, the model has high prognosis accuracy. The aim of the model applying is prioritize diagnostic and preventive measures to minimize reproductive system diseases complications and preserve workers’ health and efficiency.


2019 ◽  
pp. 81-88
Author(s):  
Ozoem Martha ◽  
Chibuike Victoria C. ◽  
Ugwunwoti Emeka P.

This study was carried out to determine the modern office technology competencies expected of office technology and management (OTM) graduate workers by supervisors in Delta State. The study was guided by two research questions and two hypotheses tested at 0.05 level of significance. The respondents consisted of 142 supervisors, made up of 74 heads of department and directors of government establishments, and 68 managers and directors of private establishments in the study area. Descriptive survey research design was used to conduct the study and 28 – items questionnaire were used to collect data from respondents. The instrument was validated by three experts and had a Cronbach Alpha reliability coefficient of 0.77. Means with standard deviations were used to answer the research questions, while t-test was used to test the null hypotheses. The extent of supervisor‟s expectations of information processing competencies did not differ significantly based on the mean ratings of male and female supervisors of OTM graduates in government and private establishments. The findings also revealed that supervisors expect much information processing and communication competencies from the OTM graduate workers. Based on the findings and the implications, it was recommended among others that, curriculum planners, business and OTM education lecturers should ensure that the competencies required for modern office technologies are entrenched and taught in the institutions to prepare the OTM graduates for the world of work.


2016 ◽  
Vol 88 (8) ◽  
pp. 713-830
Author(s):  
John H. Duffus ◽  
Michael Schwenk ◽  
Douglas M. Templeton

Abstract The primary objective of this glossary is to give clear definitions for those who contribute to studies relevant to these disciplines, or who must interpret them, but are not themselves reproductive physiologists or physicians. This applies especially to chemists who need to understand the literature of reproductive and teratogenic effects of substances without recourse to a multiplicity of other glossaries or dictionaries. The glossary includes terms related to basic and clinical reproductive biology and teratogenesis, insofar as they are necessary for a self-contained document, particularly terms related to diagnosing, measuring, and understanding the effects of substances on the embryo, the fetus, and on the male and female reproductive systems. The glossary consists of about 1200 primary alphabetical entries and includes Annexes of common abbreviations and examples of chemicals with known effects on human reproduction and development. The authors hope that toxicologists, pharmacologists, medical practitioners, risk assessors, and regulatory authorities are among the groups who will find this glossary helpful, in addition to chemists. In particular, the glossary should facilitate the worldwide use of chemical terminology in relation to occupational and environmental risk assessment.


2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Indu Sharma ◽  
Priti Kumari ◽  
Anuradha Sharma ◽  
Subhas Chandra Saha

Abstract Background COVID-19 is the most recent zoonotic outbreak of coronaviruses. Mostly, it invades the cells of the respiratory system by binding to the receptor angiotensin-converting enzyme 2 (ACE2) which is also present in other organs like the kidney, testis, ovaries, breast, heart, and intestine, rendering them prone to be infected. The reproductive potential is a must for the sustenance of any species and it is our prime duty to safeguard the reproductive system of the present generation from such a deadly virus. The previously reported coronaviruses like severe acute respiratory syndrome coronavirus (SARS-CoV) had a detrimental impact on reproductive organs. There is a dearth of sufficient research to provide substantial evidence for the harmful effects of this novel virus on the reproductive system. Hence, our review compiles the knowledge available until now to boost research in this regard and to take the necessary steps in time. Main body of abstract Here we tried to compile all the data available on the effect of SARS-CoV-2 on the reproductive system as well as vertical transmission of the virus. All related articles published from February to August 2020 were reviewed and thoroughly analyzed. SARS-CoV-2 has been found to affect the sperm concentration and motility, thus degrading the fertility of males. In females, it is suspected that this virus affects the oocyte quality and ovarian function, resulting in infertility or miscarriage. Traces of SARS-CoV-2 virus have also been found in the breast milk of the infected mothers and the semen of infected males. Vertical transmission of SARS-CoV-2 has also been reported in some cases. Conclusion Based on the literature review, SARS-CoV-2 seems to have the potential of affecting both male and female reproductive tracts. This review brings together the findings and observations made in the area of reproductive health during the current pandemic. The reproductive system of the young population is preordained for subsequent disorders, infertility, reduced sperm count, and motility. Therefore, the research and medical practices should focus on possible vulnerability being posed by SARS-CoV-2 to the gametes and future generations. We, hereby, recommend close monitoring of young and pregnant COVID-19 patients concerning reproductive health with utmost priority.


Agronomy ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 464
Author(s):  
Edward Marques ◽  
Heather M. Darby ◽  
Jana Kraft

Increasing the amount of micronutrients in diets across the world is crucial to improving world health. Numerous methods can accomplish this such as the biofortification of food through biotechnology, conventional breeding, and agronomic approaches. Of these, biofortification methods, conventional breeding, and agronomic approaches are currently globally accepted and, therefore, should be the primary focus of research efforts. This review synthesizes the current literature regarding the state of biofortified foods through conventional breeding and agronomic approaches for crops. Additionally, the benefits and limitations for all described approaches are discussed, allowing us to identify key areas of research that are still required to increase the efficacy of these methods. The information provided here should provide a basal knowledge for global efforts that are combating micronutrient deficiencies.


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