scholarly journals Biological Effects of Non-ionizing Electromagnetic Fields to 27 GHz on Sperm Quality of Mytilus galloprovincialis

2022 ◽  
Author(s):  
Roberta Pecoraro ◽  
Santi Concetto Pavone ◽  
Elena Maria Scalisi ◽  
Carmen Sica ◽  
Sara Ignoto ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Mytilus Galloprovincialis ◽  
Sperm Quality ◽  
Biological Effects ◽  
Ecological Impact ◽  
Horn Antenna ◽  
High Gain ◽  
Wireless Internet

Recently, a rising use of wireless internet technologies has been demonstrated. The devices which use these technologies emit a considerable amount of electromagnetic radiation (EMFs) which could interact with the male reproductive system. The aim of this study was to investigate in vitro influence of electromagnetic fields a 27 GHz on sperm quality in Mytilus galloprovincialis. The experiments were conducted with a no commercial high gain pyramidal horn antenna. Sperm samples, taken from sexually mature males of M. galloprovincialis, were placed in seawater. Once evaluated the number and quality of spermatozoa, sperm cells were exposed to electromagnetic fields. The effect of exposure was evaluated after 10, 20, 30 and 40 minutes with light microscope and using Eosin test. All the samples were performed in triplicate and statistical analysis was carried out by one-way ANOVA test. A significative decrease (30%) in sperm motility was ob-served after 10 minutes of exposure and after 30 minutes all sperms were immobile and not vital. The measurement of the Oxidation Reduction Potential (sORP), which evaluates the oxidative damage on spermatozoa, shows how the exposure to 27 GHz has increased the oxidant amount compared to the control groups. This study provides useful data on potential ecological impact of the EMFs on aquatic animals, that currently are poor investigated.

Development of sperm sexing and associated assisted reproductive technology for sex preselection of captive bottlenose dolphins (Tursiops truncatus)

2006 ◽  
Vol 18 (3) ◽  
pp. 319 ◽  
Author(s):  
J. K. O'Brien ◽  
T. R. Robeck
Keyword(s):  
Tursiops Truncatus ◽  
Sperm Quality ◽  
Bottlenose Dolphins ◽  
Sperm Concentration ◽  
Motility Index ◽  
Liquid Storage ◽  
Directional Freezing

Research was conducted to develop sperm sorting and novel sperm preservation methodologies for sex predetermination in the bottlenose dolphin (Tursiops truncatus) using artificial insemination. In Study 1, the effect of seminal plasma (SP), sperm concentration and freezing rate (FR) on in vitro sperm quality of liquid-stored, non-sorted spermatozoa was examined. There was no effect (P > 0.05) of prefreeze SP addition on post-thaw quality (progressive motility, kinetic rating, sperm motility index (SMI), viability and acrosome integrity). Post-thaw motility parameters and viability were higher (P < 0.05) for slow FR than fast FR samples. In Study 2 investigating the effects of liquid storage and sorting on sperm quality, motility and SMI after sorting and centrifugation were lower (P < 0.05) than those of the initial ejaculate. The sort rate for enrichment (91 ± 4% purity) of X- and Y-bearing spermatozoa was 3400 ± 850 spermatozoa sex−1 s−1. In Study 3, compared with a modified straw method, directional freezing resulted in enhanced in vitro quality of sorted and non-sorted spermatozoa derived from liquid-stored semen (P < 0.05). In Study 4, endoscopic insemination of three dolphins with sorted, frozen–thawed X-bearing spermatozoa resulted in one conception and the birth of a female calf. High-purity sorting of dolphin spermatozoa, derived from liquid-stored semen, can be achieved with minimal loss of in vitro sperm quality and samples are functional in vivo.

scholarly journals Evaluation of sperm quality of Erythrolamprus poecilogyrus sublineatus (Cope, 1860) (Serpentes, Dipsadidae)

2017 ◽  
Vol 77 (3) ◽  
pp. 553-557
Author(s):  
A. C. Silva ◽  
A. S. Varela Junior ◽  
T. F. Cardoso ◽  
E. F. Silva ◽  
D. Loebmann ◽  
...  
Keyword(s):  
Sperm Quality ◽  
Membrane Integrity ◽  
Coastal Region ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Sperm Analysis ◽  
Pampa Region

Abstract Erythrolamprus poecilogyrus sublineatus (Cope, 1860), is a species widely distributed in the Pampa Domain, occurring in Rio Grande do Sul, Argentina and Uruguay, mainlyin the pampa region. In the coastal region of southern Brazil this is serpent is considered one of the most abundant. The purpose of the present study is to describe the techniques of sperm evaluation in vitro for E. poecilogyrus sublineatus in the coastal plain of Rio Grande do Sul, Brazil. After laparatomy the efferent vases were collected and the semen was diluted in 1ml Beltsville Thawing Solution. The characteristics of motility, membrane integrity, mitochondria, acrosome, DNA, cell viability and cellular functionality were evaluated. Fluorescent probes were used for the evaluation of sperm structure in epifluorescence microscope. With the techniques described, it was possible to identify intact and injured cells, enabling the determination of cell characteristics for the spring season (October and November). It was observed in the analyses that 80% of sperm cells were mobile and that 84.1 ± 8.0% of sperm membranes were intact. The standards found were of 48 ± 13.8% of intact acrosome, 73.6 ± 6.0 of perfect DNA and of 91.8 ± 4.0 of functional mitochondria. Thus, these values from the sperm analysis can be used as standards for the species Erythrolamprus poecilogyrus sublineatus.

scholarly journals ELECTROMAGNETIC FIELD INFLUENCES ON HUMAN HEALTH

2019 ◽  
Vol 33 (1) ◽  
pp. 67-70
Author(s):  
Miodrag Šmelcerović
Keyword(s):  
Electromagnetic Radiation ◽  
Human Health ◽  
Electromagnetic Fields ◽  
New Technologies ◽  
Biological Effects ◽  
Epidemiological Studies ◽  
Human Organism ◽  
Portable Communication ◽  
The Impact

The environment we live in is exposed to the increasing and increasing frequency of electromagnetic radiation in our homes and workplaces. In addition to natural radiation from the sun, radiation sources such as high-voltage transmission lines and powerful radar devices are sources of strong electric and magnetic fields. Increasing the number of portable communication and entertainment devices also increase the human body's exposure to additional electromagnetic radiation. This paper describes the most common effects of low-frequency non-ionizing electromagnetic fields (ELFs), which can cause biological changes, sometimes negative for human health. Different methods and approaches are used to investigate the effect of non-ionizing electromagnetic fields on biological systems. In vitro cell culture studies provide important insights into the underlying mechanisms of biological effects of low radiation levels. It is often not possible to deduce the functional response of a human organism to a particular biological effect. In vivo animal and human studies provide more convincing evidence of possible adverse health effects. There is a problem with the extrapolation of the results obtained from animal experiments to humans. Epidemiological studies provide the most direct information on the risk of adverse effects in humans. However, it is difficult to find good control groups that in all aspects (gender, similar life habits, etc.) fit the exposed groups. Care should be taken in interpreting the results of epidemiological studies, especially if low risk is found, as this may be due to other factors. Epidemiological studies are important for monitoring the impact of new technologies on human health [1].

Impact of Electromagnetic Radiation on the Human Organism

2016 ◽  
Vol 695 ◽  
pp. 295-302
Author(s):  
Liliana Sachelarie ◽  
Mihaela Păpușa Vasiliu ◽  
Dorina Maria Farcas ◽  
Oana Maria Daraba ◽  
Laura Romila
Keyword(s):  
Magnetic Fields ◽  
Electromagnetic Fields ◽  
Magnetic Stimulation ◽  
Clinical Medicine ◽  
Heart Diseases ◽  
Biological Effects ◽  
Healing Process ◽  
Human Organism ◽  
Brain Functions

Interaction mechanisms and biological effects that different types of radiation could exert upon humans have been studied by many authors. Different studies investigated the reactions of various types of electrical equipment, power lines, mobile phones and other upon humans, their influence on the brain functions, public health or if magnetic fields (MFs) can be used for pain relief. Some authors found out that electromagnetic fields (EMFs) might be a factor which determined a number of chronic illnesses (cancer, heart diseases and sleep disorders) even to low intensity. But on the other side, because the EMFs are part of nature, being radiated by human body and its organs, the quality and intensity of the energy can either support or destroy health. Magnetic fields and electromagnetic fields are useful modalities to treat various pathologies and diseases. A number of clinical studies, in vivo animal experiments and in vitro cellular and membrane researches, suggested that EMFs and MFs stimulation reduce pain and accelerate the healing process. However, EMFs are still not widely used in clinical medicine. It is accepted that pain control occurs via a series of integrated stages, each with particular objectives essential to the tissue/system repairing processes. Electric and magnetic stimulation have been proven to provide beneficial and reproducible healing effects even when other methods have failed. As for the MFs, this is an excellent possibility as a non – invasive method to control and treat pain. Magnetic stimulation of a patient is different from drug treatment. As technology proliferates and people use more and more electronic devices, some researchers suspect EMFs contribute to a subtle assault upon people’s immune system and health. This paper aims to review the way that electromagnetic fields and other types of radiations interaction at molecular level with human organism.

Freezability of Andalusian donkey (Equus asinus) spermatozoa: effect of extenders and permeating cryoprotectants

2016 ◽  
Vol 28 (12) ◽  
pp. 1990 ◽  
Author(s):  
D. Acha ◽  
M. Hidalgo ◽  
I. Ortiz ◽  
M. J. Gálvez ◽  
J. J. Carrasco ◽  
...  
Keyword(s):  
Sperm Motility ◽  
Sperm Quality ◽  
Membrane Integrity ◽  
Egg Yolk ◽  
Equus Asinus ◽  
Sperm Membrane ◽  
Freeze Test ◽  
Pooled Samples

The aim of this study was to compare the effect of two semen extenders and four permeating cryoprotectants on post-thaw sperm quality of Andalusian donkeys. First, 32 ejaculates were pooled, split and frozen in either Gent B or INRA 96 with egg yolk and glycerol. Second, 12 pooled semen samples were simultaneously frozen in Gent B (glycerol) or Gent A containing ethylene glycol (EG; 1 or 1.5%) or dimethyl sulfoxide (DMSO; 1.5 or 2%). Finally, nine pooled samples were simultaneously cryopreserved in Gent A containing 1% EG (as control), dimethylformamide (DMFA; 1 or 2.5%) or a combination of 1% EG and 1.5% DMFA. Gent B yielded a higher (P < 0.01) post-thaw sperm motility than modified INRA96. EG 1% increased the sperm membrane integrity (P < 0.001), whereas DMSO affected sperm motility and membrane integrity (P < 0.001). DMFA 2.5% yielded higher (P < 0.001) values for sperm motility and membrane integrity. We concluded that Gent B improves in vitro post-thaw sperm quality of donkey spermatozoa, but the replacement of glycerol with 1% EG or 2.5% DMFA increased sperm protection against cryodamage. The use of DMSO for freezing donkey semen was unsuccessful and a toxic effect is suspected. These extenders should be included in the pre-freeze test for each donkey.

scholarly journals Impact of in vitro inoculation and dietary supplementation with Bacillus subtilis on sperm quality of aged White Leghorn roosters

2018 ◽  
Vol 27 (3) ◽  
pp. 304-315 ◽  
Author(s):  
M.N. dos Santos ◽  
R. Ramachandran ◽  
A.S. Kiess ◽  
K.G.S. Wamsley ◽  
C.D. McDaniel
Keyword(s):  
Bacillus Subtilis ◽  
Sperm Quality ◽  
Dietary Supplementation ◽  
White Leghorn ◽  
In Vitro Inoculation

scholarly journals Human Fibroblasts In Vitro Exposed to 2.45 GHz Continuous and Pulsed Wave Signals: Evaluation of Biological Effects with a Multimethodological Approach

2020 ◽  
Vol 21 (19) ◽  
pp. 7069 ◽  
Author(s):  
Elisa Regalbuto ◽  
Anna Anselmo ◽  
Stefania De Sanctis ◽  
Valeria Franchini ◽  
Florigio Lista ◽  
...  
Keyword(s):  
Electromagnetic Fields ◽  
Biological Effects ◽  
Human Fibroblasts ◽  
Rna Seq ◽  
Exposure System ◽  
Adverse Health Effects ◽  
Communication Devices ◽  
Next Generation Sequencing Ngs ◽  
Generation Sequencing

The increasing exposure to radiofrequency electromagnetic fields (RF-EMF), especially from wireless communication devices, raises questions about their possible adverse health effects. So far, several in vitro studies evaluating RF-EMF genotoxic and cytotoxic non-thermal effects have reported contradictory results that could be mainly due to inadequate experimental design and lack of well-characterized exposure systems and conditions. Moreover, a topic poorly investigated is related to signal modulation induced by electromagnetic fields. The aim of this study was to perform an analysis of the potential non-thermal biological effects induced by 2.45 GHz exposures through a characterized exposure system and a multimethodological approach. Human fibroblasts were exposed to continuous (CW) and pulsed (PW) signals for 2 h in a wire patch cell-based exposure system at the specific absorption rate (SAR) of 0.7 W/kg. The evaluation of the potential biological effects was carried out through a multimethodological approach, including classical biological markers (genotoxic, cell cycle, and ultrastructural) and the evaluation of gene expression profile through the powerful high-throughput next generation sequencing (NGS) RNA sequencing (RNA-seq) approach. Our results suggest that 2.45 GHz radiofrequency fields did not induce significant biological effects at a cellular or molecular level for the evaluated exposure parameters and conditions.

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