This May Be The 'Most Contaminated Killer Whale' On The Planet

Researchers in Scotland believe they’ve found one of the most contaminated killer whales on the planet. They fear members of the orca’s pod may also have sky-high levels of chemicals in their bodies that render them infertile, scientists at Scotland’s Rural College said in a news release this week. New analysis of a deceased adult female killer whale, named Lulu by researchers, shows that the animal’s blubber contained some of the highest levels ever recorded of polychlorinated biphenyls, or PCBs, a toxic chemical once pervasive in electrical components. The researchers called Lulu the “Scottish killer whale most contaminated on the planet.” PCBs are banned in the U.K. and the U.S. due to toxicity. But because the chemical is resistant to extreme temperatures and pressures, it takes a long time to break down. PCBs still exist in the environment, and have been known to leach from landfills into groundwater, according to the U.S. Environmental Protection Agency. Andrew Brownlow, head of the Scottish Marine Animal Stranding Scheme, told BBC News that the level of PCBs found in Lulu’s blubber was shockingly high ― an estimated 20 times the rate considered safe for cetaceans. High levels of the chemical are linked to poor health, including impaired immune function, infertility and increased susceptibility to cancers. “That puts her as one of the most contaminated animals on the planet in terms of PCB burden, and does...
Source: Science - The Huffington Post - Category: Science Source Type: news

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Authors: Zarandi NP, Galdon G, Kogan S, Atala A, Sadri-Ardekani H Abstract While the survival rate of children with cancer is increasing, preserving fertility for prepubertal boys is still a challenge. Although intracytoplasmic sperm injection (ICSI) using frozen sperms has revolutionized infertility treatment, it is not applicable for the patients who undergo chemotherapy before puberty since spermatogenesis has not begun. Therefore, preserving spermatogonial stem cells (SSCs) as an experimental option can be provided to prepubertal patients at a risk of damage or loss of their SSCs due to cancer treatments and de...
Source: Stem Cells and Cloning: Advances and Applications - Category: Stem Cells Tags: Stem Cells Cloning Source Type: research
CONCLUSION: Despite a more frequent presentation with advanced disease, colorectal cancer has a similar prognosis in pregnancy when compared with the general population. Diagnostic interventions and treatment should not be delayed due to the pregnancy but a balance between maternal and foetal wellbeing must always be kept in mind. PMID: 30010511 [PubMed - as supplied by publisher]
Source: Acta Chirurgica Belgica - Category: Surgery Tags: Acta Chir Belg Source Type: research
Publication date: Available online 11 July 2018Source: Mutation Research/Reviews in Mutation ResearchAuthor(s): Tahereh Setayesh, Armen Nersesyan, Miroslav Mišík, Franziska Ferk, Sabine Langie, Vanessa M. Andrade, Alexander Haslberger, Siegfried KnasmüllerAbstractHealth authorities are alarmed worldwide about the increase of obesity and overweight in the last decades which lead to adverse health effects including inflammation, cancer, accelerated aging and infertility. We evaluated the state of knowledge concerning the impact of elevated body mass on genomic instability. Results of investigations with hu...
Source: Mutation Research Reviews in Mutation Research - Category: Genetics & Stem Cells Source Type: research
Small higher risk of non-invasive breast and ovarian tumours may not be due to treatment Related items fromOnMedica Only a third of women with regular bloating would see their GP Infertility much more likely after childhood cancer Unprotected sex among British teens – soars Experts call for wider HPV vaccination Use of contraceptive pill may lead to longer life
Source: OnMedica Latest News - Category: UK Health Source Type: news
Authors: Anderson RC, Newton CL, Anderson RA, Millar RP Abstract The gonadotropin receptors, luteinising hormone receptor, and follicle-stimulating hormone receptor, play a central role in governing reproductive competency/fertility. Gonadotropin hormone analogues have been utilised clinically for decades, in assisted reproductive therapies, and in the treatment of various infertility disorders. While these treatments are effective, the clinical protocols demand multiple injections, and the hormone preparations can lack uniformity and stability. The past two decades have seen a drive to develop chimeric and modifie...
Source: Endocrine Reviews - Category: Endocrinology Tags: Endocr Rev Source Type: research
Publication date: Available online 28 June 2018Source: Best Practice &Research Clinical Obstetrics &GynaecologyAuthor(s): Wanyuan Cui, Kelly-Anne PhillipsAbstractGlobally, breast cancer is the most common female reproductive cancer. Although not part of initial curative-intent treatment in women with other reproductive cancers, alkylating chemotherapy is often used to treat women with curable breast cancer. Chemotherapy-associated ovarian failure (COF) is a potential consequence of this treatment, and can cause infertility and increase the risk of cognitive impairment, cardiovascular disease and fractures from redu...
Source: Best Practice and Research Clinical Obstetrics and Gynaecology - Category: OBGYN Source Type: research
Publication date: April 2018Source: Best Practice &Research Clinical Obstetrics &Gynaecology, Volume 48Author(s): Gabriela N. Algarroba, Joseph S. Sanfilippo, Hanna Valli-PulaskiAbstractThe 5-year survival rate for childhood cancer is over 80%, thereby increasing the number of young women facing infertility in the future because of the gonadotoxic effects of chemotherapy and radiation. The gonadotoxic effects of childhood cancer treatment vary by the radiation regimen and the chemotherapeutic drugs utilized. Although the American Society of Clinical Oncology guidelines recommend fertility preservation for all patie...
Source: Best Practice and Research Clinical Obstetrics and Gynaecology - Category: OBGYN Source Type: research
In this study, we reported a comprehensive genome-wide DNA methylation landscape in chicken germ cells, and transcriptomic dynamics was also presented. By uncovering DNA methylation patterns on individual genes, some genes accurately modulated by DNA methylation were found to be associated with cancers and virus infection, e.g., AKT1 and CTNNB1. Chicken-unique markers were also discovered for identifying male germ cells. Importantly, integrated epigenetic mechanisms were explored during male germ cell differentiation, which provides deep insight into the epigenetic processes associated with male germ cell differentiation a...
Source: Stem Cell Reports - Category: Stem Cells Source Type: research
ConclusionIn cases of TML incidental finding by US with the presence of risk factors (personal history of testicular cancer, testicular atrophy, infertility, cryptorchidism) a consultation with a specialist should be considered. In the absence of risk factors, the occurrence of testicular cancer in patients with TML is similar to the risk of the general population.
Source: Basic and Clinical Andrology - Category: Urology & Nephrology Source Type: research
Fertility drugs don't increase a woman's chance of getting ovarian cancer, but infertility itself is associated with an increased risk, a new study suggests.
Source: WebMD Health - Category: Consumer Health News Source Type: news
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