Articles tagged with Semen
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
A recent review by the European Society of Human Reproduction and Embryology found that while there is a slightly higher risk of major birth defects after ICSI and IVF, the absolute risk is small. Additionally, new research has shown that ICSI children have normal development by the time they start school.
Researchers have developed a mouse model to study the transmission of cell-associated HIV in women, finding that hormonal treatments and agents disrupting lipid rafts can prevent infection. The study reveals the importance of understanding cell-associated HIV transmission for developing effective prevention strategies.
A new study proposes revised guidelines for classifying semen samples as normal or abnormal, potentially rewriting laboratory standards used for 50 years. The research suggests that male infertility is not as clear-cut as current guidelines suggest, and that a 'gray zone' of borderline semen samples requires new treatment approaches.
New guidelines for assessing male fertility provide a more reliable means of estimating fertility, helping specialists tailor treatments to individual patient circumstances. The revised standards identify key parameters, including sperm count, motility, and morphology, to better determine a man's likelihood of fathering a child.
Researchers found AAV DNA in 38% of men with abnormal semen analysis, but only 4.6% of those with normal semen. Further studies are needed to assess the link between AAV and infertility.
A randomized trial found that zinc acetate lozenges reduced the duration and symptoms of colds, but caution is needed due to potential copper deficiency risks. Antiretroviral therapy also showed promising results in reducing HIV transmission in semen, but with concerns about drug resistance.
Researchers at USC found no significant change in average sperm count over three decades, contradicting previous studies. Sperm abnormalities were common, but did not impact overall fertility.
Researchers found three distinct shedding patterns in HIV-positive men, related to viral sources and genetic strains. This discovery shifts the focus of AIDS vaccine research from blood-borne viruses to multiple strains in semen.
Researchers at Thomas Jefferson University found latent HIV in the semen of seven infected men taking HAART, which may be transmissible. The study suggests that even if detectable virus is not present in blood, individuals should practice safe sex to prevent transmission.
A study by UNC researchers confirms the presence of mutated, drug-resistant human immunodeficiency virus in the semen of men taking antiviral medications. The study found that if men do not have adequate suppression of their virus, they are likely to shed drug-resistant strains of HIV in their genital secretions.
Researchers at the University of Pittsburgh found that HIV-1 viral load in semen can fluctuate greatly and does not correspond to viral levels in blood, requiring new testing methods to monitor transmission risk. Testing viral load levels in semen may offer physicians a better way to assess transmission risk and target treatments.
Researchers found that viral load in semen increases with progression of the disease in most patients. Using antiviral therapy, they were able to reduce viral load in semen to undetectable levels in six patients.