GitHub is holding its annual 'Universe' conference in San Francisco this week.

(The Institute of Medical Science, The University of Tokyo) Understanding the principles of cancer evolution is important in designing a therapeutic strategy. A research group at The Institute of Medical Science, The University of Tokyo (IMSUT) announced a new simulation model that describes various modes of cancer evolution in a unified manner.

(Molecular Biology and Evolution (Oxford University Press)) In a new paper, Dang Liu, Mark Stoneking and colleagues have analyzed newly generated genome-wide SNP data for the Kinh and 21 additional ethnic groups in Vietnam, encompassing all five major language families in MSEA, along with previously published data from nearby populations and ancient samples.

(American Association for the Advancement of Science) Microplastic particles entering the sea surface were thought to settle to the seafloor directly below them, but now, a new study reveals that slow-moving currents near the bottom of the ocean direct the flow of plastics, creating microplastic hotpots in sediments of the deep sea.

As part of the College's move to remote learning, 143 first-year students are taking a series of virtual field courses to investigate biodiversity.

22 November 2019

6 November 2019 , Volume 95, Number 6

Primitive sterol evolution plays an important role in fossil record interpretation and offers potential therapeutic avenues for human disease resulting from nematode infections. Recognizing that C4-methyl stenol products [8(14)-lophenol] can be synthesized in bacteria while C4-methyl stanol products (dinosterol) can be synthesized in dinoflagellates and preserved as sterane biomarkers in ancient sedimentary rock is key to eukaryotic sterol evolution. In this regard, nematodes have been proposed to convert dietary cholesterol to 8(14)-lophenol by a secondary metabolism pathway that could involve sterol C4 methylation analogous to the C2 methylation of hopanoids (radicle-type mechanism) or C24 methylation of sterols (carbocation-type mechanism). Here, we characterized dichotomous cholesterol metabolic pathways in Caenorhabditis elegans that generate 3-oxo sterol intermediates in separate paths to lophanol (4-methyl stanol) and 8(14)-lophenol (4-methyl stenol). We uncovered alternate C3-sterol oxidation and ⁷ desaturation steps that regulate sterol flux from which branching metabolite networks arise, while lophanol/8(14)-lophenol formation is shown to be dependent on a sterol C4α-methyltransferse (4-SMT) that requires 3-oxo sterol substrates and catalyzes a newly discovered 3-keto-enol tautomerism mechanism linked to S-adenosyl-l-methionine-dependent methylation. Alignment-specific substrate-binding domains similarly conserved in 4-SMT and 24-SMT enzymes, despite minimal amino acid sequence identity, suggests divergence from a common, primordial ancestor in the evolution of methyl sterols. The combination of these results provides evolutionary leads to sterol diversity and points to cryptic C4-methyl steroidogenic pathways of targeted convergence that mediate lineage-specific adaptations.­­

The Armenian diaspora, which significantly exceeds the country's resident population, has played an instrumental role in Armenia's political and economic development since independence in 1991. Yet a picture emerges of divergent currents within the diaspora, often seen from above as a unified entity. Delve into differences in engagement among Armenia's "old" and "new" diasporas with this feature article.

The recent rise in xenophobia in Hungary stands in marked contrast with the country's rich migration history. After 390,000 migrants and asylum seekers arrived in 2015, the government of Viktor Orbán issued policies to significantly limit migration and enacted a law criminalizing humanitarian assistance to migrants. This country profile examines Hungary’s migration past and present, tracing the country’s multicultural heritage to the current wave of anti-immigrant sentiment.

In an effort to advance the Association’s diversity and inclusion efforts, the ADA House of Delegates voted at its meeting in September to rescind the policy titled “The Dentist’s Prayer,” used by some state and local dental societies during their meetings, and amend its policy on recognition of religious diversity.

On paper, the Diversity Visa Program is not set up to bring in the highly skilled; applicants need only a high school diploma (or equivalent) or two years of mid-level work experience. Yet as this commentary explains, the green-card lottery has become a channel for entry of the highly skilled—with half of recipients coming to the United States in recent years having a college degree.

New Zealand drew global attention for its unity and support for the Muslim community targeted during the horrific Christchurch attacks. Yet the country's road to inclusion has been far from straightforward, and amid rising diversity it is grappling with the best way to achieve inclusion for its multiethnic population, including indigenous Māori peoples and migrants. This article outlines the opportunities and challenges to fostering multiculturalism against a backdrop of bicultural policies.

When the Rev. Martin Luther King Jr. called on America to open the doors of opportunity to people of color, the civil rights leader was making a moral argument.

Recently, Abigail Thompson, a Vice President of the AMS and Professor at UC Davis, wrote a short opinion piece coming out against the use of diversity statements in hiring. As I read her piece, I found myself troubled by some … Continue reading →

In this fourth installment on the growth in dual-language learning, the director of dual-language education in Portland, Ore., says schools must have a clear reason for why they are offering dual-language instruction.

Biodiversity -- Climatic factors.

The reaction on social media has been fierce.

Biodiversity for food and agriculture is among the earth’s most important resources. Biodiversity is indispensable: be it the insects that pollinate plants, the microscopic bacteria used for making cheese, the diverse livestock breeds used to make a living in harsh environments, the thousands species of fish, and other aquatic species in our lakes, rivers and oceans, or the thousands of [...]

Biodiversity may sound complicated, but it’s a fairly simple concept: the existence of many different types of plants and animals makes the world a healthier and more productive place. A mix of genetics, species and habitats allows Earth’s ecosystems to keep up with challenges like population growth and climate change. Biodiversity is important to us because it plays a crucial [...]

Buy fresh and seasonal produce at the Farmers’ Market on
Wednesday 26 February from 12.00 – 16.00 hours, and be sure to visit the [...]

The diversifying US population has led to the examination of workforce diversity and training. National data on diversity, inclusion, and cultural competency training have been previously collected but have been assessed only at the macro level of medicine.

This study assesses workforce diversity, inclusion, and cultural competency training in departments of pediatrics across the country and provides the first assessment of departmental efforts to improve diversity and inclusion and provide cultural competency training to trainees and faculty. (Read the full article)

A total of 2,283 Salmonella spp. isolates were recovered from 18,334 samples including patients with diarrhea, food of animal origin and pets across 5 provinces of China. The highest prevalence of Salmonella spp. was detected in chicken meats (39.3%, 486/1,237). Fifteen serogroups and 66 serovars were identified, with Typhimurium and Enteritidis being the most dominant. Most (85.5%, 1,952/2,283) isolates exhibited resistant to ≥ 1 antimicrobial and 56.4% were multi-drug resistant (MDR). A total of 222 isolates harbored extended-spectrum β-lactamases (ESBLs), 200 of which were CTX-M-type that were mostly detected from chicken meat and turtle fecal. Overall, eight bla_CTX-M genes were identified, with bla_CTX-M-65, bla_CTX-M-123, bla_CTX-M-14, bla_CTX-M-79, and bla_CTX-M-130 being the most prevalent. Totally, 166 of the 222 ESBL-producing isolates had amino acid substitutions in GyrA (S83Y, S83F, D87G, D87N, and D87Y) and ParC (and S80I), whilst the PMQR-encoding genes oqxA/B, qepA, and qnrB/S were detected in almost all isolates. Of the fifteen sequence types (STs) identified in the 222 ESBLs, ST17, ST11, ST34, and ST26 ranked among the top 5 in the number of isolates. Our study revealed considerable serovars diversity, high prevalence of co-occurrence of MDR determinants, including CTX-M-type ESBLs, QRDRs mutations and PMQR genes. This is the first report of CTX-M-130 Salmonella spp. from patients with diarrhea and QRDRs mutations from turtle fecal samples. Our study emphasizes the importance of actions, both in the health care settings and in the veterinary medicine sector, to control the dissemination of MDR, especially the CTX-M Salmonella spp. isolates.

The Multicultural Resource Center at Penn State has announced this year’s Senior and Faculty/Staff Diversity Recognition Awards recipients. The 2020 awards honor multicultural University Park graduating seniors who excel in academics, leadership, and service, as well as faculty and staff throughout Penn State who demonstrate a commitment to diversity, equity and inclusion efforts beyond the responsibilities of their position.

At its final meeting of the 2019-20 academic year, the Penn State Faculty Senate passed landmark legislation updating its full-time faculty hiring policy for the first time in more than 20 years, as one step in continued efforts to advance the University’s commitment to diversity, equity and inclusion.

Each year the Center for Sexual and Gender Diversity presents awards to Penn State students, staff, and faculty who are interested in and have shown a commitment to the Penn State LGBTQ+ community.

Over 300 State leaders, including Cabinet secretaries, state agency heads, division directors and human resources professionals participated in the Equal Employment Opportunity Summit which was hosted by the Governor’s Council on Equal Employment Opportunity.

Businesses owned by individuals with disabilities and certain small businesses will now be included in the state’s supplier diversity efforts thanks to an executive order recently signed by Governor Jack Markell.

Dover, DE – The Office of Management and Budget today released a report commissioned by Governor Jack Markell earlier this year in an ongoing effort to build a welcoming work environment across State government that fully embraces diversity and equal opportunity for all employees. “I have been clear that my administration is committed to ensuring […]

Delaware Grown Week – a campaign highlighting the fruits, vegetables, and value-added agricultural products produced in The First State – officially launched with a kick-off event at the Rehoboth Beach Farmers’ Market including Secretary of Agriculture Michael T. Scuse, state legislators, and other officials.

The broadcasters have a vital role to positively help shape the minds of future generations, by providing the diverse-rich content

A new paper is being launched today at the House of Lords in London that challenges government, regulators and companies working on clean energy to make gender diversity a key priority. The paper has been produced by the EWiRE network, set up by Regen to provide a vibrant network for women working in clean energy.

A new paper is being launched today at the House of Lords in London that challenges government, regulators and companies working on clean energy to make gender diversity a key priority. The paper has been produced by the EWiRE network, set up by Regen to provide a vibrant network for women working in clean energy.

A new paper is being launched today at the House of Lords in London that challenges government, regulators and companies working on clean energy to make gender diversity a key priority. The paper has been produced by the EWiRE network, set up by Regen to provide a vibrant network for women working in clean energy.

David Bailey, Director of International Banks Supervision, and others at the Prudential Regulation Authority (PRA) have written to Solvency II insurers, large non-Directive firms (NDFs) and Capital ...

Purple tea was developed by the Kenya Tea Research Institute in 2011, leading to an increase in the competitiveness of produce from Kenya.

The planet’s largest areas of undisturbed wilderness in Siberia and tropical rainforests are under threat from huge waves of development. Here’s what it looks like

After finding out she was autistic, Siena Castellon sparked a global school movement that celebrates neurodiversity, which now includes nearly half a million students

ABSTRACT

Pneumocystis, a major opportunistic pathogen in patients with a broad range of immunodeficiencies, contains abundant surface proteins encoded by a multicopy gene family, termed the major surface glycoprotein (Msg) gene superfamily. This superfamily has been identified in all Pneumocystis species characterized to date, highlighting its important role in Pneumocystis biology. In this report, through a comprehensive and in-depth characterization of 459 msg genes from 7 Pneumocystis species, we demonstrate, for the first time, the phylogeny and evolution of conserved domains in Msg proteins and provide a detailed description of the classification, unique characteristics, and phylogenetic relatedness of five Msg families. We further describe, for the first time, the relative expression levels of individual msg families in two rodent Pneumocystis species, the substantial variability of the msg repertoires in P. carinii from laboratory and wild rats, and the distinct features of the expression site for the classic msg genes in Pneumocystis from 8 mammalian host species. Our analysis suggests multiple functions for this superfamily rather than just conferring antigenic variation to allow immune evasion as previously believed. This study provides a rich source of information that lays the foundation for the continued experimental exploration of the functions of the Msg superfamily in Pneumocystis biology.

IMPORTANCE Pneumocystis continues to be a major cause of disease in humans with immunodeficiency, especially those with HIV/AIDS and organ transplants, and is being seen with increasing frequency worldwide in patients treated with immunodepleting monoclonal antibodies. Annual health care associated with Pneumocystis pneumonia costs ~$475 million dollars in the United States alone. In addition to causing overt disease in immunodeficient individuals, Pneumocystis can cause subclinical infection or colonization in healthy individuals, which may play an important role in species preservation and disease transmission. Our work sheds new light on the diversity and complexity of the msg superfamily and strongly suggests that the versatility of this superfamily reflects multiple functions, including antigenic variation to allow immune evasion and optimal adaptation to host environmental conditions to promote efficient infection and transmission. These findings are essential to consider in developing new diagnostic and therapeutic strategies.