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COVID-19 patients who received hydroxychloroquine or chloroquine, had worse outcomes

23 May, 2020

No improvement in death rate for COVID-19 patients who received hydroxychloroquine. eurekalert.org. May 22, 2020. In an observational analysis of almost 100,000 hospitalized COVID-19 patients of whom nearly 15,000 received hydroxychloroquine or chloroquine, patients had worse outcomes and heightened risk of ventricular arrythmias. A research team led by investigators from Brigham and Women’s Hospital has […]

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Revista toxicológica en línea

Fluoride exposure alters Ca2 signaling and mitochondrial function in enamel cells, study

21 February, 2020

How too much fluoride causes defects in tooth enamel. sciencedaily.com. February 18, 2020. Changes within enamel cells point to mechanism by which excessive fluoride leads to fluorosis. Summary: Exposing teeth to excessive fluoride alters calcium signaling, mitochondrial function, and gene expression in the cells forming tooth enamel — a novel explanation for how dental fluorosis, […]

Tropical snake diversity collapses after widespread amphibian loss, study

17 February, 2020

Disappearing snakes and the biodiversity crisis. sciencedaily.com. February 13, 2020. Summary: A new study should sound alarm bells regarding the ‘biodiversity crisis’ or the loss of wildlife around the world. Tropical snake (eyelash viper) (stock image). Credit: © ondrejprosicky / Adobe Stock A Michigan State University- and University of Maryland-led study should sound alarm bells regarding […]

Tobacco smoking and somatic mutations in human bronchial epithelium, study

5 February, 2020

Never too late to quit: Protective cells could cut risk of lung cancer for ex-smokers. sciencedaily.com. January 29, 2020. Summary: Protective cells in the lungs of ex-smokers could explain why quitting smoking reduces the risk of developing lung cancer. Scientists have discovered that compared to current smokers, people who had stopped smoking had more genetically […]

Alert by the growing threat of abrupt and irreversible climate changes

29 November, 2019

Climate tipping points — too risky to bet against. The growing threat of abrupt and irreversible climate changes must compel political and economic action on emissions. Timothy M. Lenton, Johan Rockström, Owen Gaffney, Stefan Rahmstorf, Katherine Richardson, Will Steffen & Hans Joachim Schellnhuber. nature.com. November 27, 2019. Politicians, economists and even some natural scientists have […]

Air pollution is the fifth leading risk factor for mortality worldwide

25 November, 2019

Air pollution is reaching endemic proportions. By Daniel T Cross. sustainability-times.com. November 22, 2019. Air pollution is a potent killer. Need proof? Consider these facts: in the United States alone some 200,000 people succumb to ailments brought on or exacerbated by toxic air. Air pollution has been linked to a variety of debilitating health conditions […]

Mercury trade in Indonesia, a business intertwined with the lucrative and illegal production of gold

15 November, 2019

The hidden cost of gold: Birth defects and brain damage. By Richard C. Paddock. nytimes.com. November 09, 2019. Thousands of children with crippling birth defects. Half a million people poisoned. A toxic chemical found in the food supply. Accusations of a government cover-up and police officers on the take. La balsa en el Museo del […]

DFDT: Manipulating solid forms of contact insecticides for infectious disease prevention

15 October, 2019

Fast-acting German insecticide lost in the aftermath of WWII Fluoridated DDT swiftly kills disease-carrying mosquitoes, which may lower its environmental impact — but its history is alarming. sciencedaily.com. October 11, 2019. Summary: A new study explores the chemistry as well as the complicated and alarming history of DFDT, a fast-acting insecticide. Mosquito picando (Sertox) A […]

The concurrent decline of soil lead and blood lead of children in New Orleans, study

Study finds topsoil is key harbinger of lead exposure risks for children. sciencedaily.com. October 14, 2019. Summary: Tracking lead levels in soil over time is critical for cities to determine lead contamination risks for their youngest and most vulnerable residents, according to a new study.Tracking lead levels in soil over time is critical for cities […]

Environmental contamination from E-cigarette, cigarette, Cigar, and cannabis products

11 October, 2019

E-cigarettes, tobacco and cannabis products are littering high schools. sciencedaily.com. October 10, 2019. Summary: High schools in the San Francisco Bay area are being contaminated by plastics and toxic litter from e-cigarettes, cannabis products and combustible tobacco products such as cigarettes and cigarillos, a new study has found.High schools in the San Francisco Bay Area […]

Maternal exposure to industrial pollution can harm the immune system of offspring, study

Environmental toxins impair immune system over multiple generations. sciencedaily.com. October 02, 2019. Summary: New research shows that maternal exposure to a common and ubiquitous form of industrial pollution can harm the immune system of offspring and that this injury is passed along to subsequent generations, weakening the body’s defenses against infections such as the influenza […]

Pathology of vaping-associated lung injury, study

3 October, 2019

Vaping-associated lung injury may be caused by toxic chemical fumes, study finds. sciencedaily.com. October 02, 2019. Summary: Research into the pathology of vaping-associated lung injury is in its early stages, but a study finds that lung injuries from vaping most likely are caused by direct toxicity or tissue damage from noxious chemical fumes. Cigarrillo electrónico […]

November 2019

1 October, 2019

N° 29 – November 2019Monthly Electronic Newsletter of Sertox (Latin-American Portal of Toxicology) – Year 3

Lead chromate pigments added to turmeric threaten public health across Bangladesh, study

25 September, 2019

Neurotoxin lead sometimes added to turmeric for brighter color. sciencedaily.com. September 24, 2019- Summary: Some spice processors in Bangladesh use an industrial lead chromate pigment to imbue turmeric with a bright yellow color prized for curries and other traditional dishes, elevating blood lead levels in Bangladeshis. Curcuma en polvo (Sertox) It’s billed as a health […]

Global trends in antimicrobial resistance in animals in low- and middle-income countries, study

23 September, 2019

Antimicrobial resistance is drastically rising. sciencedaily.com. September 19, 2019. Summary: Researchers have shown that antimicrobial-resistant infections are rapidly increasing in animals in low and middle income countries. They produced the first global of resistance rates, and identified regions where interventions are urgently needed. Pollos corriendo (Sertox) Chickens (stock image).Credit: © Alexbedoya / Adobe StockThe world is […]

Ambient black carbon particles reach the fetal side of human placenta, study

19 September, 2019

Air pollution can reach the placenta around a developing baby. By Aimee Cunningham*. sciencenews.org. September 17, 2019. A study of women in Belgium found black carbon particles, or soot, within the organ. Breathing in polluted air may send soot far beyond a pregnant woman’s lungs, all the way to the womb surrounding her developing baby. […]

Antibiotic resistance among bacteria isolated from common bottlenose dolphins in Florida

16 September, 2019

Antibiotic resistance surges in dolphins, mirroring humans. 13 years of antibiotic resistance trends in bottlenose dolphins. sciencedaily.com. September 15, 2019. Summary: Scientists obtained a total of 733 pathogen isolates from 171 individual wild Bottlenose dolphins in Florida and found that the overall prevalence of resistance to at least one antibiotic for the 733 isolates was […]

A neonicotinoid insecticide reduces fueling and delays migration in songbirds, study

13 September, 2019

Controversial insecticides shown to threaten survival of wild birds. sciencedaily.com. September 12, 2019. Summary: New research shows how the world’s most widely used insecticides could be partly responsible for dramatic declines in farmland bird populations. In the first experiment to track effects of a neonicotinoid pesticide on birds in the wild, the team found that […]

High pollutant exposure level of the largest European community of bottlenose dolphins

Environment: Pollutants found in skin and blubber of English Channel dolphins. eurekalert.org. September 12, 2019. High levels of pollutants, such as industrial fluids and mercury, may have accumulated in the blubber and skin of one of the largest coastal populations of dolphins in Europe, a study in Scientific Reports indicates. Mercury concentrations found in 82 […]

E-cigarettes are not safe

E-cigarettes: Smoking Cessation Aid or Dangerous Addiction? By Anna Sayburn. medscape.com. September 10, 2019. Recent reports of a death in the US linked to vaping, and of almost 200 cases of lung disease, have caused alarm about the widespread use of e-cigarettes. Cigarrillo electrónico en uso (elmundo.es) Director of the US Centers for Disease Control […]

Oral fluoroquinolones and risk of mitral and aortic regurgitation, study

11 September, 2019

Commonly used antibiotics may lead to heart problems. sciencedaily.com. September 10, 2019. Summary: Scientists have shown for the first time a link between two types of heart problems and one of the most commonly prescribed classes of antibiotics. (Sertox) Antibiotic pills illustration (stock image).Credit: © pictoores / Adobe StockScientists have shown for the first time a […]

Dermatological progression of a probable box jellyfish sting

6 September, 2019

Unique report details dermatological progression and effective treatment of a severe jellyfish sting. sciencedaily.com, September 5, 2019. Summary: A detailed case report documents the dermatological progression of a patient stung by a jellyfish off the coast of Cambodia. The aim of this report is to guide clinicians and patients to understand what to expect after […]

About smoking and vaping

5 September, 2019

 Baylor College of Medicine Taking Action to Address Youth Smoking and Vaping. bcm.edu. September 2019.Smoking is the leading cause of preventable death and disability in the United States. More than 16 million Americans are living with a serious disease caused by smoking. The vast majority of smokers start smoking as teenagers. Cigarrillo electrónico en uso […]