First 3D-printed human corneas can aid transplants
London, May 30: In a first, British scientists have 3D printed human corneas that could cut down shortage of eye donors available for transplant.
In the research, researchers from Britain's Newcastle University, mixed stem cells (human corneal stromal cells) from a healthy donor cornea with alginate and collagen to create a solution that could be printed or a "bio-ink".
Using a simple low-cost 3D bio-printer, the bio-ink was successfully extruded in concentric circles to form the shape of a human cornea. It took less than 10 minutes to print.
"Our unique gel -- a combination of alginate and collagen -- keeps the stem cells alive whilst producing a material which is stiff enough to hold its shape but soft enough to be squeezed out the nozzle of a 3D printer," said lead author Che Connon, a professor at the varisty.
The results published in the journal, Experimental Eye Research, also stated that the stem cells could culture -- or grow.
"...we have a ready to use bio-ink containing stem cells allowing users to start printing tissues without having to worry about growing the cells separately," Connon added.
According to the researchers, there is a significant shortage of corneas available to transplant, with 10 million people worldwide requiring surgery to prevent corneal blindness as a result of diseases such as trachoma, an infectious eye disorder.
Further, the study also demonstrated that the cornea could also be built to match a patient's unique specifications.
The dimensions of the printed tissue were originally taken from an actual cornea. By scanning a patient's eye, they could use the data to rapidly print a cornea which matched the size and shape, the team explained.
"...what we have shown is that it is feasible to print corneas using coordinates taken from a patient eye and that this approach has potential to combat the world-wide shortage," Connon said.
However, the researchers admitted that further investigations on 3D printed corneas are needed before they could be used in transplants.
Let the Truth be known. If you read VB and like VB, please be a VB Supporter and Help us deliver the Truth to one and all.
Parliament passes Waqf (Amendment) Bill, 2025
New Delhi (PTI): Parliament early Friday passed the contentious Waqf (Amendment) Bill, 2025, after it was approved by the Rajya Sabha.
The Lok Sabha had on Thursday approved the Bill after over a 12-hour debate.
In Rajya Sabha, the Bill got 128 votes in its favour and 95 against after all the amendments moved by the opposition were rejected.
In the lower house, the bill was supported by 288 MPs while 232 voted against it.
Participating in a debate in the Rajya Sabha, Minority Affairs Minister Kiren Rijiju said the Bill was brought with a number of amendments based on suggestions given by various stakeholders.
"The Waqf Board is a statutory body. All government bodies should be secular," the minister said, explaining the inclusion of non-Muslims on the board.
He, however, said the number of non-Muslims has been restricted to only four out of 22.
Rijiju also alleged that the Congress and other opposition parties, and not the BJP, were trying to scare Muslims with the Waqf Bill.
"You (opposition) are pushing Muslims out of the mainstream," he added.
He said for 60 years, the Congress and others ruled the country, but did not do much for Muslims and the community continues to live in poverty.
"Muslims are poor, who is responsible? You (Congress) are. Modi is now leading the government to uplift them," the minister said.
According to the Waqf (Amendment) Bill, Waqf tribunals will be strengthened, a structured selection process will be maintained, and a tenure will be fixed to ensure efficient dispute resolution.
As per the Bill, while Waqf institutions' mandatory contribution to Waqf boards is reduced from 7 per cent to 5 per cent, Waqf institutions earning over Rs 1 lakh will undergo audits by state-sponsored auditors.
A centralised portal will automate Waqf property management, improving efficiency and transparency.
The Bill proposes that practising Muslims (for at least five years) can dedicate their property to the Waqf, restoring pre-2013 rules.
It stipulates that women must receive their inheritance before the Waqf declaration, with special provisions for widows, divorced women and orphans.
The Bill proposes that an officer above the rank of collector investigate government properties claimed as Waqf.
It also proposes that non-Muslim members be included in the central and state Waqf boards for inclusivity.
