Author: susanbulanda

Raw meat diet for dogs

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Researchers at the University of Bristol found that feeding dogs raw meat increases the risk that they will pass a strain of E. coli that cannot be killed by the common antibiotic ciprofloxacin in their feces.

E. coli can cause food poisoning and is the most common cause of urinary tract and bloodstream infections which can be life-threatening.

According to researcher Matthew Avison, raw meat that is sold for human consumption and the meat used to feed dogs is likely to be contaminated with the antibiotic-resistant E. coli. While cooking the meat kills the E. coli, handling it exposes the person who is feeding their dog raw meat. It is also likely that the dog is passing E. coli in his feces.

Sue’s Note: Many advertisers try portray the dog as being a tame wolf and promote the idea that dogs need to eat like wild canines because it is their “natural diet.” The truth of the matter is that any wild animal can only eat the food that is available to them and it is not a balanced diet. Wolves, if they are lucky, can live to eight years of age. Some do live longer but not as long as domestic dogs. Foxes are lucky if they live three to four years. Many wild animals suffer from starvation, especially in the areas that have a cold winter.

Journal Reference:

  1. Jordan E. Sealey, Ashley Hammond, Kristen K. Reyher, Matthew B. Avison. One health transmission of fluoroquinolone-resistant Escherichia coli and risk factors for their excretion by dogs living in urban and nearby rural settings. One Health, 2023; 17: 100640 DOI: 10.1016/j.onehlt.2023.100640

Cite This Page:

University of Bristol. “Feeding dogs raw meat increases the risk of antibiotic-resistant E. coli.” ScienceDaily. ScienceDaily, 20 November 2023. <www.sciencedaily.com/releases/2023/11/231120124109.htm>.

Plants can tell if they are being touched

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Even though plants do not have nerves, they know when they are being touched and when the touching stops. Researchers at Washington State University conducted experiments and found that increase or decrease of pressure on internal cells in plants recognize touch. It also seems that any of the cells in plants react to touch not just certain ones. In past research, it was noted that when a caterpillar bites a plant leaf, the plant can respond with a defensive mechanism that repels the caterpillar. Also, brushing a plant triggers calcium waves that activate different genes. Scientists want to conduct further studies to understand plant sensitivity.

Journal Reference:

  1. Alexander H. Howell, Carsten Völkner, Patrick McGreevy, Kaare H. Jensen, Rainer Waadt, Simon Gilroy, Hans-Henning Kunz, Winfried S. Peters, Michael Knoblauch. Pavement cells distinguish touch from letting go. Nature Plants, 2023; DOI: 10.1038/s41477-023-01418-9

Cite This Page:

Washington State University. “Plants can distinguish when touch starts and stops, study suggests.” ScienceDaily. ScienceDaily, 31 May 2023. <www.sciencedaily.com/releases/2023/05/230531101953.htm>.

Rats have the ability to imagine

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Researchers at the Howard Hughes Medical Institute Janelia Research Campus have discovered that rats have the ability to imagine. There findings indicate that just like people, animals can think about places and objects that they cannot see.

To determine this, they used a Brain Machine Interface and saw that rats showed specific neural activity patterns in the hippocampus area of their brain which is related to spatial memory. The researchers have determined that this function is necessary for an animal to remember past events and imagining future scenarios even if the animal is at a different location.  

Sue’ Note: While this research is important because it gives scientific proof that animals can remember the past and think of the future, it is obvious to me because if animals cannot do this, those in the wild would not survive. Our domestic animals would not be able to learn the things we teach them. An example that many of us have observed is the dog who knows what time a person is coming home and waits at the door, long before he could hear, smell or see the person coming. This is evident when the person is late and the dog at waiting at the normal time and illustrates the dog’s ability to anticipate the future. A famous example of this is Hachikō, an Akita who lived in Japan from 1923 to 1935 and went every day to the train station to wait for his master after his master died.

Journal Reference:

  1. Chongxi Lai, Shinsuke Tanaka, Timothy D. Harris, Albert K. Lee. Volitional activation of remote place representations with a hippocampal brain–machine interface. Science, 2023; 382 (6670): 566 DOI: 10.1126/science.adh5206

Cite This Page:

Howard Hughes Medical Institute. “Rats have an imagination, new research suggests.” ScienceDaily. ScienceDaily, 2 November 2023. <www.sciencedaily.com/releases/2023/11/231102162557.htm>.

Cancer in Golden Retrievers

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Researchers at the University of California, Davis have conducted a study to determine why some Golden Retrievers live longer when 65% of Golden Retrievers die at a younger age from cancer.

By studying dogs that lived longer rather than studying the cancer itself, they found a gene in the family of proteins that increased the life of Goldens by two years. This gene is also important in human cancer.

The researchers studied dogs that were alive at 14 years of age and those that died before 12 years of age. This finding is just one piece of the puzzle and more research needs to be done, but like many studies that involve animals, it will benefit people as well. It may also help other breeds of dogs who develop cancer.

Journal Reference:

  1. Robert B. Rebhun, Daniel York, Flora M. D. De Graaf, Paula Yoon, Kevin L. Batcher, Madison E. Luker, Stephanie Ryan, Jamie Peyton, Michael S. Kent, Joshua A. Stern, Danika L. Bannasch. A variant in the 5′UTR of ERBB4 is associated with lifespan in Golden Retrievers. GeroScience, 2023; DOI: 10.1007/s11357-023-00968-2

Cite This Page:

University of California – Davis. “Can golden retrievers live longer?.” ScienceDaily. ScienceDaily, 19 October 2023. <www.sciencedaily.com/releases/2023/10/231019151809.htm>.

Scent and Memory

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According to a study done by researchers at the UCI Center for the Neurobiology of Learning & Memory at the University of California, adults who were ages 60 – 85 who were suffering from some sort of mental impairment partook of the scent therapy test.  

The subjects of the study were given a diffuser and seven cartridges, each with a natural oil. The subjects used the diffuser each night when going to bed. The diffuser ran for two hours. The results showed that the group with the full-strength diffusers improved their cognitive skills by 226%.

Imagining showed that there was better integrity in the brain pathway called the left uncinate fasciculus, which connects the medial temporal lobe to the decision-making prefrontal cortex.

In addition to having better memory, the subjects said that they slept better, more soundly.

Sue’s Comments:  We know that essential oils have numerous benefits when smelled. For example, lavender is known for its calming properties. What this study brings to mind for me is the possible connection with scent work in dogs. There are many accounts of animals, dogs, elephants, and other animals, who recognize a person that they have not seen in years. Scent is one of the keys for this, indicating that there may be a connection similar to the findings in this study. Previous studies have shown that in dogs, scent is linked to sight, they are not separate in the dog’s brain. I would love to see further studies that involve this finding and how it might apply to animals. Would it be possible to help elderly animals in the same way. Dogs and other animals suffer from dementia the same as people.

Journal Reference:

  1. Cynthia C. Woo, Blake Miranda, Mithra Sathishkumar, Farideh Dehkordi-Vakil, Michael A. Yassa, Michael Leon. Overnight olfactory enrichment using an odorant diffuser improves memory and modifies the uncinate fasciculus in older adults. Frontiers in Neuroscience, 2023; 17 DOI: 10.3389/fnins.2023.1200448

Cite This Page:

University of California – Irvine. “Sweet smell of success: Simple fragrance method produces major memory boost.” ScienceDaily. ScienceDaily, 1 August 2023. <www.sciencedaily.com/releases/2023/08/230801131700.htm>.

Plants are smarter than you think

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The concept of plants “thinking” and “communicating” are mind boggling to some people. The field of plant neurobiology is a fascinating subject that can stretch the imagination. While I normally do not post article of this nature, I wanted to share some of the research on this topic.

One of the latest articles that deal with plants has shown that plants feel pressure as well as a lack of pressure, and know the difference. Although they do not have nerves as we do, they still have a system that lets them know when something touches them and when the pressure is relieved.

Plants also communicate and support each other. For example, the mother tree will feed its saplings through the roots. This is how young saplings in deep forests survive. They are often in shaded areas where they cannot photosynthesize due to a lack of sunlight and depend on the parent tree to feed them.

If that is not enough, studies have shown that some plants (and perhaps all) have the ability to “hear” sounds. They detect certain frequencies and respond to them, yet ignore other frequencies.

When plants detect danger, such as a disease, they send out a signal to the plants around them who respond by preparing their own defense as a response.  

If you think about all of this, it expands the concept of communication and even relationships beyond what we experience. For me, it opens my mind to what animals can do, and that we have just scratched the surface in understanding the depth of their world.

I hope my readers have enjoyed my musings.

https://www.smithsonianmag.com/science-nature/the-whispering-trees-180968084/#:~:text=For%20young%20saplings%20in%20a,their%20roots%20through%20the%20network.

https://now.northropgrumman.com/can-plants-hear-the-science-of-sound-sensing-flora

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3405699/#:~:text=Plants%20emit%20volatile%20organic%20compounds,own%20defense%20weapons%20in%20response.

Journal Reference:

  1. Alexander H. Howell, Carsten Völkner, Patrick McGreevy, Kaare H. Jensen, Rainer Waadt, Simon Gilroy, Hans-Henning Kunz, Winfried S. Peters, Michael Knoblauch. Pavement cells distinguish touch from letting go. Nature Plants, 2023; DOI: 10.1038/s41477-023-01418-9

Cite This Page:

Washington State University. “Plants can distinguish when touch starts and stops, study suggests.” ScienceDaily. ScienceDaily, 31 May 2023. <www.sciencedaily.com/releases/2023/05/230531101953.htm>.

Gene therapy to prevent pregnancy in dogs and cats

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A Research team led by David Pépin, PhD, Associate Director of the Pediatric Surgical Research Laboratories at Massachusetts General Hospital, and an Associate Professor at Harvard Medical School has developed a gene therapy as an alternate to spaying and neutering animals. They are hopeful that this method will eventually be available to be able to control outdoor pet populations.

While this discovery is promising, the researchers have yet to develop the infrastructure to treat thousands of unowned feral cats. This will also give pet owners an alternative to traditional spay and neuter programs to prevent pregnancy in their pets.

What is interesting is this gene therapy was first used in people. Typically discoveries in animals help humans, in this case it is the reverse.

Journal Reference:

  1. Vansandt, L.M., Meinsohn, MC., Godin, P. et al. Durable contraception in the female domestic cat using viral-vectored delivery of a feline anti-Müllerian hormone transgene. Nat Commun, 2023 DOI: 10.1038/s41467-023-38721-0

Cite This Page:

Massachusetts General Hospital. “Gene therapy produces long-term contraception in female domestic cats.” ScienceDaily. ScienceDaily, 6 June 2023. <www.sciencedaily.com/releases/2023/06/230606111636.htm>.

Those amazing whiskers

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A study at Northwestern University has shown that rats determine the direction of the wind with their whiskers. Since many other animals such as dogs, foxes, coyotes and cats also have whiskers that are similar to those of a rat, is it possible that they also use their whiskers to determine the direction of the wind?

All wild animals also have to be aware of the direction of the wind to either find food or avoid being detected by predators. Therefore, the ability to determine the direction of the wind or even a slight breeze is a life and death skill. It seems reasonable that that they would use their whiskers as well as the movement of their fur to detect the direction of air movement.

Sue’s Note: As a person who has trained many working dogs, I have seen dogs learn how to use the direction of the wind to find scent. It is quite an amazing thing to watch, and another example of how intelligent animals are.

Journal References:

Mitra J. Z. Hartmann et al. Whiskers aid anemotaxis in rats. Science Advances, August 2016 DOI: 10.1126/sciadv.1600716

Yan S. W. Yu, Matthew M. Graff, Mitra J. Z. Hartmann. Mechanical responses of rat vibrissae to airflow. The Journal of Experimental Biology, 2016; 219 (7): 937 DOI: 10.1242/jeb.126896

Cite This Page:

Northwestern University. (2016, August 24). Whiskers help animals sense the direction of the wind: First-ever study shows that rats use whiskers to locate source of airflow. ScienceDaily. http://www.sciencedaily.com/releases/2016/08/160824160248.htm

Brain connectivity in animals and people

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In a first of its kind study, researchers at the American Friends of Tel Aviv University studied the MRIs of 130 mammals of different species to determine if there is a difference between brain size and its ability to transfer information through the neural network. This information was compared with the MRI of 32 human brains. The size of the mammals ranged from tiny bats to large mammals. The report stated that no animal was killed for the study.

Professor Assaf explained that many scientists assumed that human brains were superior due to greater brain connectivity, explaining a human’s greater abilities. However, no difference was found between species. However, there were differences between individual animals of the same species.

Brain connectivity involves the transfer of information from one part of the brain to another. The researchers found that different brains use different strategies to preserve an equal measure of overall connectivity.

“Our study revealed a universal law: Conservation of Brain Connectivity,” Prof. Assaf concludes. “This law denotes that the efficiency of information transfer in the brain’s neural network is equal in all mammals, including humans. We also discovered a compensation mechanism which balances the connectivity in every mammalian brain. This mechanism ensures that high connectivity in a specific area of the brain, possibly manifested through some special talent (e.g. sports or music) is always countered by relatively low connectivity in another part of the brain. In future projects we will investigate how the brain compensates for the enhanced connectivity associated with specific capabilities and learning processes.”

This study was conducted by researchers at Tel Aviv University, led by Prof. Yaniv Assaf of the School of Neurobiology, Biochemistry and Biophysics and the Sagol School of Neuroscience and Prof. Yossi Yovel of the School of Zoology, the Sagol School of Neuroscience, and the Steinhardt Museum of Natural History.

Journal Reference:

  1. Yaniv Assaf, Arieli Bouznach, Omri Zomet, Assaf Marom, Yossi Yovel. Conservation of brain connectivity and wiring across the mammalian class. Nature Neuroscience, 2020; 23 (7): 805 DOI: 10.1038/s41593-020-0641-7

Cite This Page:

American Friends of Tel Aviv University. “MRI scans of the brains of 130 mammals, including humans, indicate equal connectivity.” ScienceDaily. ScienceDaily, 20 July 2020. <www.sciencedaily.com/releases/2020/07/200720112216.htm>.

A new use for dog and human hair

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Researchers at the University of Technology Sydney found that mats made from dog fur collected from groomers and human hair collected from salons were better at cleaning up crude oil spills. Currently non-biodegradable plastic waste is used as well as loose peat moss are used but hair works better is less harmful to the environment. The researchers recommend that peat moss should not be used anymore since it is a limited resource. Peat is not useful on sandy soils such as beaches but polypropylene sorbents are the best substance for sandy environments. For all hard land surfaces mats of hair and fur work the best.

This is a fantastic use of material that would otherwise be discarded.

Journal Reference:

  1. Megan L. Murray, Soeren M. Poulsen, Brad R. Murray. Decontaminating Terrestrial Oil Spills: A Comparative Assessment of Dog Fur, Human Hair, Peat Moss and Polypropylene Sorbents. Environments, 2020; 7 (7): 52 DOI: 10.3390/environments7070052
  2.  

Cite This Page:

University of Technology Sydney. “Oil spill clean-up gets doggone hairy: First comparison of natural-origin sorbent materials for land-based oil spills.” ScienceDaily. ScienceDaily, 15 July 2020. <www.sciencedaily.com/releases/2020/07/200710100938.htm>.