Infant Mortality and Child-Naming: A Genealogical Exploration of American Trends

Parallel with anthropological literature, analysis of genealogical data shows a strong relationship between infant mortality rates and allowing deceased infants to remain unnamed. This was especially true for infants dying shortly after birth. Findings suggest the question, When does life begin? has had social as well as biological and religious answers

Identifying Lameness Movements in Sheep via Sensor Data Analysis

Lameness is one of the most significant issues for sheep well-being in the UK. Climate changes bringing mild winters and wet summers create muddy soil that is a good place for the Dichelobacter nodosus bacteria to survive and transmit easily to the sheep foot and cause footrot; which is one of the common causes for sheep lameness in the UK. According to the report from ADAS (Vickers and Wright, 2013), each lame ewe costs approximately £89.80 because of the decline in its performance alongside the extra labour and treatment costs that are needed. Although lameness is an endemic disease, it could be controlled from being spread within the whole flock. Previously, lameness can be spotted by a trained veterinarian or experienced shepherd either using a visual Locomotion Scoring (LS) or Gait Scoring (GS) system. It was a very time-consuming approach, took many efforts, and tended to be subjective. Therefore, an objective method to monitor the flock via sensor technology has been developed to collect data about the behaviour or gait of the animal to be analysed. This research aimed to utilise sensor devices to detect the early signs of lameness by collecting the movement measurements of the mounted sensor around the sheep’s neck. The collected data were analysed to classify the sheep into the lame and sound classes via machine learning approaches. However, collecting data on behaviour to study the gait changes for the sake of lameness detection in sheep is not a straightforward procedure. Firstly, the data were collected from Lodge Farm, Moulton College in Northamptonshire from several sheep. The data measurements involved movements of three axes around the neck. The y-axis was positioned to correspond with surge movements (forwards and backwards), the x-axis with sway motion (right and left), and the z-axis with heave (up and down) as shown in the figure below. Then, the raw data such as acceleration and orientation were tested by a range of machine learning classifiers. The initial results indicated that decision tree was the best machine learning classifier for the sheep sensor-based data. Moreover, the orientation of the surge axis is the best indicator of early signs of lameness; in this context orientation means the value of the angle around the axis which is the roll angle (y axis-surge). The figure shows the deployment of a mobile sensor which is used as a prototype sensor in this ongoing study

The role of serial physical examinations in the management of angioedema involving the head and neck: A prospective observational study

AbstractObjectiveTo elucidate the progression of angioedema of the head and neck with routine management and to assess the utility of serial physical exams and fiberoptic laryngoscopy in its management.MethodsThis study was a prospective observational research. From 2013 to 2014, a prospective observational study was conducted at a tertiary referral center. Forty patient were approached, 7 refused, 33 (18–90 years old) were enrolled. Patients presented with angioedema involving the head and neck over a 12 month period were asked to participate in the study. Physical examination and fiberoptic laryngoscopy were performed at presentation and then repeated at least 1 h later.ResultsThirty-three patients with head and neck angioedema from any cause were enrolled (mean age 58, range 23–89 years). The upper lip was the most commonly involved site (58%). On reevaluation, 82% of patients reported subjective improvement in symptoms. The association between subjective improvement and the physical exam, including fiberoptic laryngoscopy findings, was statistically significant (P < 0.001).ConclusionIn stable patients with angioedema of any head and neck subsite, self-reported symptoms are associated with clinical stability or improvement as assessed by physical signs and fiberoptic laryngoscopy. Patients' symptoms may be an appropriate surrogate to monitor clinical status without the need for routine serial physical examinations or fiberoptic laryngoscopy, though further study is needed

Author Correction: A HML6 endogenous retrovirus on chromosome 3 is upregulated in amyotrophic lateral sclerosis motor cortex

There is increasing evidence that endogenous retroviruses (ERVs) play a significant role in central nervous system diseases, including amyotrophic lateral sclerosis (ALS). Studies of ALS have consistently identified retroviral enzyme reverse transcriptase activity in patients. Evidence indicates that ERVs are the cause of reverse transcriptase activity in ALS, but it is currently unclear whether this is due to a specific ERV locus or a family of ERVs. We employed a combination of bioinformatic methods to identify whether specific ERVs or ERV families are associated with ALS. Using the largest post-mortem RNA-sequence datasets available we selectively identified ERVs that closely resembled full-length proviruses. In the discovery dataset there was one ERV locus (HML6_3p21.31c) that showed significant increased expression in post-mortem motor cortex tissue after multiple-testing correction. Using six replication post-mortem datasets we found HML6_3p21.31c was consistently upregulated in ALS in motor cortex and cerebellum tissue. In addition, HML6_3p21.31c showed significant co-expression with cytokine binding and genes involved in EBV, HTLV-1 and HIV type-1 infections. There were no significant differences in ERV family expression between ALS and controls. Our results support the hypothesis that specific ERV loci are involved in ALS pathology

A HML6 endogenous retrovirus on chromosome 3 is upregulated in amyotrophic lateral sclerosis motor cortex.

There is increasing evidence that endogenous retroviruses (ERVs) play a significant role in central nervous system diseases, including amyotrophic lateral sclerosis (ALS). Studies of ALS have consistently identified retroviral enzyme reverse transcriptase activity in patients. Evidence indicates that ERVs are the cause of reverse transcriptase activity in ALS, but it is currently unclear whether this is due to a specific ERV locus or a family of ERVs. We employed a combination of bioinformatic methods to identify whether specific ERVs or ERV families are associated with ALS. Using the largest post-mortem RNA-sequence datasets available we selectively identified ERVs that closely resembled full-length proviruses. In the discovery dataset there was one ERV locus (HML6_3p21.31c) that showed significant increased expression in post-mortem motor cortex tissue after multiple-testing correction. Using six replication post-mortem datasets we found HML6_3p21.31c was consistently upregulated in ALS in motor cortex and cerebellum tissue. In addition, HML6_3p21.31c showed significant co-expression with cytokine binding and genes involved in EBV, HTLV-1 and HIV type-1 infections. There were no significant differences in ERV family expression between ALS and controls. Our results support the hypothesis that specific ERV loci are involved in ALS pathology

Quantitative analysis of human endogenous retrovirus-K transcripts in postmortem premotor cortex fails to confirm elevated expression of HERV-K RNA in amyotrophic lateral sclerosis

Over the past two decades a number of studies have demonstrated activity of the retroviral enzyme reverse transcriptase in the serum of patients with sporadic amyotrophic lateral sclerosis (ALS). Known human exogenous retroviruses such as HIV-1 have been eliminated as possible sources of this activity and investigators have therefore considered the possibility that human endogenous retroviruses (HERVs) might be involved. HERV-K (HML-2) is the most recent retroviral candidate to be proposed following the observation of elevated HERV-K expression in cortical and spinal neurons of ALS patients and the demonstration of HERV-K envelope protein neurotoxicity in vitro and in transgenic mice. This retroviral hypothesis is an attractive one, not least because it raises the possibility that ALS might become treatable using antiretroviral drugs. In the present study we have attempted independent confirmation of the observation that HERV-K RNA levels are elevated in ALS brain. Total RNA was extracted from the postmortem premotor cortex of 34 patients with ALS and 23 controls. Quantitative real-time reverse transcription PCR (RT-qPCR) was performed according to the MIQE guidelines using HERV-K gag, pol and env primer sets. Data was analysed by the 2-∆∆Ct method with normalisation against two reference genes, GAPDH and XPNPEP1. Geometric mean HERV-K RNA expression levels in the premotor cortex of ALS patients were not found to be different from the expression levels in non-ALS controls. Our findings do not confirm the recently reported association between elevated cortical HERV-K RNA levels and ALS, and thus raise doubts about the role of this endogenous retrovirus in ALS pathogenesis. The results of this study may have implications for ongoing clinical trials aiming to suppress HERV-K activity with antiretroviral drugs

Understanding plant invasions: An example of working with citizen scientists to collect environmental data

Citizen science programs are useful tools for collecting important environmental science data. To ensure data quality, however, it must be shown that data collected by volunteers can produce reliable results. We engaged 143 volunteers over four years to map and estimate abundance of invasive plants in New York and New Jersey parklands. We found that off trail abundance of only a few of our targeted invasive species were positively correlated with on trail abundance. Our results support that citizen science programs can be a useful and sometimes a much needed addition to environmental science protocols