Beware! Sugary drinks may accelerate cancer growth

Agencies
March 25, 2019

Washington, Mar 25: Consuming just one or two cups of sugar-sweetened drinks daily may accelerate the growth of intestinal tumours, say scientists who also discovered how sugar can directly feed cancer growth.

Researchers at Baylor College of Medicine and Weill Cornell Medicine in the US conducted the study on mice.

"An increasing number of observational studies have raised awareness of the association between consuming sugary drinks, obesity and the risk of colorectal cancer," said Jihye Yun, assistant professor at Baylor.

"We know that obesity increases the risk of many types of cancer including colorectal cancer; however, we were uncertain whether a direct and causal link existed between sugar consumption and cancer," said Yun.

Researchers generated a mouse model of early-stage colon cancer where APC gene is deleted.

"APC is a gatekeeper in colorectal cancer. Deleting this protein is like removing the breaks of a car," Yun said.

"Without it, normal intestinal cells neither stop growing nor die, forming early stage tumours called polyps. More than 90 per cent of colorectal cancer patients have this type of APC mutation," she said.

Using this mouse model of the disease, the team tested the effect of consuming daily modest amount of high-fructose corn syrup -- the equivalent of people drinking about one and half of a sugar-sweetened beverage daily -- on tumour development.

The sweetened water was 25 per cent high-fructose corn syrup, which is the main sweetener of sugary drinks people consume. High-fructose corn syrup consists of glucose and fructose at a 45:55 ratio.

When the researchers provided the sugary drink in the water bottle for the APC-model mice to drink at their will, mice rapidly gained weight in a month.

To prevent the mice from being obese and mimic humans' daily consumption of one can of soda, the researchers gave the mice a moderate amount of sugary water orally with a special syringe once a day.

After two months, the APC-model mice receiving sugary water did not become obese, but developed tumours that were larger and of higher-grade than those in model mice treated with regular water.

"These results suggest that when the animals have early stage of tumours in the intestines -- which can occur in many young adult humans by chance and without notice -- consuming even modest amounts of high-fructose corn syrup in liquid form can boost tumour growth and progression independently of obesity," Yun said.

"Further research is needed to translate these discovery to people; however, our findings in animal models suggest that chronic consumption of sugary drinks can shorten the time it takes cancer to develop," she said.

The team then investigated the mechanism by which this sugar promoted tumour growth. They discovered that the APC-model mice receiving modest high-fructose corn syrup had high amounts of fructose in their colons.

They found that sugary drinks increased the levels of fructose and glucose in the colon and blood, respectively and that tumours could efficiently take up both fructose and glucose via different routes.

Fructose was first chemically changed and this process then enabled it to efficiently promote the production of fatty acids, which ultimately contribute to tumour growth.

"This study revealed the surprising result that colorectal cancers utilise high-fructose corn syrup, the major ingredient in most sugary sodas and many other processed foods, as a fuel to increase rates of tumour growth," said Lewis Cantley at Weill Cornell Medicine.

"While many studies have correlated increased rates of colorectal cancer with diet, this study shows a direct molecular mechanism for the correlation between consumption of sugar and colorectal cancer," Cantley said.

"Our findings also open new possibilities for treatment," Yun said.

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News Network
February 10,2020

Mumbai, Feb 10: Ankita Pisudde, a resident of Hinganghat town in Wardha, was critical after sustaining 40% burns on February 3 when she was set afire, allegedly by one Vikesh Nagrale (27) while she was on her way to college.

The 25-year-old woman lecturer who was set on fire by a stalker in Maharashtra’s Wardha district last week died at a hospital in Nagpur on Monday morning, a police official said.

Ankita Pisudde, resident of Hinganghat town in Wardha, had been critical after sustaining 35 to 40% “grade III” burns on February 3 when she was set afire allegedly by one Vikesh Nagrale (27) while she was on way to her college, they said.

She was undergoing treatment at the Orange City Hospital & Research Centre here, located around 75 km from Wardha.

“Doctors at the hospital declared her dead at 6.55 a.m. today,” Hinganghat’s police inspector Satyaveer Bandiwar said.

The woman sustained deep burn injuries on scalp, face, right upper limb, left hand, upper back, neck and eyes along with severe inhalational injuries, the hospital said in a medical bulletin on Monday.

She died of “septicemic shock” after suffering from deep dermal burns along with severe inhalational injuries, respiratory distress and related complications, it said.

Around 4 a.m. on Monday, her oxygen levels deteriorated inspite of ventilator support, coupled with decreasing urine output and reduction in blood pressure, the hospital said.

As part of immediate resuscitation measures, medicines were escalated to maintain the blood pressure and all feasible steps were taken to improve the oxygen levels in blood, but the patient remained “extremely critical”, it said.

“Around 6.30 a.m., she had bradycardia and inspite of prolonged cardiopulmonary resuscitation, the patient could not be revived and was declared dead at 6.55 a.m.,” it said.

The probable cause of death was “septicemic shock”, the bulletin added.

During her treatment, she underwent tracheostomy (creating an opening in neck to place a tube into the windpipe to allow air to enter the lungs), burn dressings, debridement and escharotomies, the hospital informed.

Debridement is a medical procedure to remove dead, damaged or infected tissue, while escharotomy is a surgical procedure used to treat full-thickness (third-degree) circumferential burns.

The woman’s parents and uncle were kept informed about her deteriorating health condition and death, the hospital said, adding that the body was later handed over to police for postmortem and other formalities.

After the woman’s condition deteriorated, the hospital informed about her critical status to Maharashtra Home Minister Anil Deshmukh, Wardha Guardian Minister Sunil Kedar, Nagpur Divisional Commissioner Sanjeev Kumar, Police Commissioner Bhushan Kumar Upadhyay, Wardha Collector Vivek Bhimanwar and Wardha Superintendent of Police Basavraj Teli.

Heavy security was deployed in Hinganghat to avoid any law and order problem following her death, the police said.

Several locals, mostly women and college students, took out a march in Wardha city last Thursday, demanding death penalty for the accused.

Home Minister Deshmukh visited the hospital on Tuesday and announced that the accused’s trial would be fast-tracked.

The State government last week flew Navi Mumbai-based National Burns Centre director Sunil Keswani to Nagpur to supervise the woman’s treatment.

It has also appointed well-known lawyer Ujjwal Nikam as special public prosecutor in the case.

According to the victim’s relatives, Nagrale, who was arrested within hours of the incident on February 3, had been harassing her for quite some time.

Nagrale and the woman were friends till two years ago when she severed ties with him due to his “irrational behaviour”, the police earlier said.

A special team led by Deputy Superintendent of Police Trupti Jadhav will probe the case, the Wardha Police said last week.

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News Network
March 5,2020

Lucknow, Mar 5: Uttar Pradesh chief minister Yogi Adityanath said last night that the role of teachers would come under the scanner when "anti-India" slogans are raised at universities and institutions of higher education.

"When anti-India slogans are raised at institutions of higher education, we should be prepared to ask why this type of distortion occurrs among our students?" he said at a programme organised by the Basic Shiksha Parishad in Lucknow.

"We begin our work with pledge for the country's unity and integrity and today slogans are raised for the division of the nation. In such a situation, questions are raised over the role of teachers who are considered equal to god in society," he said.

"Who all are involved in this sin and chaos? Governments can provide resources, but the one who has given them basic education, who has given them secondary education and who has led them to that place, all of them should evaluate their actions today," the chief minister said.

Speaking about the condition of education in the state when his government came to power three years ago, he said there was an atmosphere of chaos and anarchy in the state and the condition of basic education was very bad.

"The worst problem was that of proxy teachers. Our government started the process of prohibiting proxy teachers in the first phase," he said.

Adityanath said that a teacher is not just a government servant, but the fate of the nation. He said teachers should learn from Chanakya.

Had Chanakya confined himself to Nalanda University, he would not have been able to make India a superpower of the world during that period. Teachers will have to prepare themselves according to the challenges and need of society, he added.

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Agencies
July 8,2020

Probiotics that broaden the mix of helpful bacteria in the gut may help to ease depression, say researchers.

Foods that broaden the profile of helpful bacteria in the gut are collectively known as probiotics. These "good bacteria" can be taken as supplements, or found naturally in yoghurts or fermented foods.

For the findings, the research team from the University of Brighton in the UK searched for relevant studies published in English between 2003 and 2019, which looked at the potential therapeutic contribution of pre-and probiotics in adults with depression and/or anxiety disorders.

Out of an initial haul of 71 studies, just seven met all the criteria for inclusion. All 7 investigated at least one probiotic strain; four looked at the effect of combinations of multiple strains.In all, 12 probiotic strains featured in the selected studies, primarily Lactobacillus acidophilus, Lactobacillus casei, and Bifidobacterium bifidium.

One study looked at combined pre-probiotic treatment, while one looked at prebiotic therapy by itself. The studies varied considerably in their design, methods used, and clinical considerations, but all of them concluded that probiotic supplements either alone or in combination with prebiotics may be linked to measurable reductions in depression.

And every study showed a significant fall or improvement in anxiety symptoms and clinically relevant changes in biochemical measures of anxiety or depression with probiotic or combined pre-probiotic use.

Of the 12 different probiotics investigated, 11 were potentially useful, the findings showed.'Probiotics may help reduce the production of inflammatory chemicals, such as cytokines, as is the case in inflammatory bowel disease, the researchers suggested.

"They may help direct the action of tryptophan, a chemical thought to be important in the gut-brain axis in psychiatric disorders," they added.

In this way, with a better understanding of the mechanisms, probiotics may prove to be a useful tool across a wide range of conditions," the authors wrote.

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