सिर्फ स्किन ही नहीं बल्कि कई बीमारियों की दवा है एलोवेरा

एलोवेरा एक औषधीय पौधा है. इसे ग्वारपाठा, घीकवार और धृतकुमारी के नाम से भी जाना जाता है. एलोवेरा के जूस का सेवन करने से शरीर में होने वाले पोषक तत्वों की कमी को पूरा किया जा सकता है. एलोवेरा में एक जड़ी-बूटी की तरह कई गुण होते हैं. चेहरे के लिए अमृत और औषधीय गुणों का भण्‍डार है एलोवेरा.

एलोवेरा का इस्तेमाल सर्दी और गर्मी दोनों ही मौसम में कर सकते हैं. हेल्थ एक्सपर्ट के मुताबिक, सुबह खाली पेट एलोवेरा जूस के सेवन से पेट की समस्याएं दूर हो जाती हैं.

कैंसर के इलाज में सहायक नई रक्त कोशिका की खोज

लंदन। वैज्ञानिकों ने एक नई सफेद रक्त कोशिका की पहचान का दावा किया है। यह सफेद रक्त कोशिका रोग प्रतिरोधक क्षमता को सक्रिय करने का काम करती है जिससे शरीर बाहरी आक्रमण से लड़ने में सक्षम होता है। शोधकर्ताओं का दावा है कि यह कैंसर के इलाज में विशेष तौर पर कारगर सिद्ध होगी। न्यूकैसल और सिंगापुर के शोधकर्ताओं ने दावा किया है कि ये सफेद रक्त कोशिकाएं जीवाणु, विषाणु आदि के हमले होने पर शरीर को सुरक्षा प्रदान करती हैं। यह कोशिका टी कोशिकाओं को सक्रिय करने का काम करती हैं। इस प्रक्रिया को क्रॉस प्रेसेन्टेशन कहा जाता है। न्यूकैसल यूनिवर्सिटी के वरिष्ठ शोधकर्ता डॉक्टर मुजलिफाह हनिफा ने बताया कि इन सफेद रक्त कोशिकाओं का प्रयोग हम कैंसर के विरुद्ध टीके बनाने में कर सकते हैं। यह अध्ययन इम्यूनिटी नामक पत्रिका में प्रकाशित किया गया है।

Source -Jagran

Molecule in immune system 'may help fight skin cancer

Researchers, including one of Indian origin, have found that high expression of a cell-signalling molecule, known as interleukin-9, in immune cells inhibits melanoma growth.

After observing mice without genes responsible for development of an immune cell called T helper cell 17 (TH17), the researchers from Brigham and Women’s Hospital (BWH) found that these mice had significant resistance to melanoma tumour growth, suggesting that blockade of the TH17 cell pathway favoured tumour inhibition. The researchers also noticed that the mice expressed high amounts of interleukin-9.

"These were unexpected results, which led us to examine a possible contribution of interleukin-9 to cancer growth suppression.” Rahul Purwar said.

The researchers next treated melanoma-bearing mice with T helper cell 9 (TH9), an immune cell that produces interleukin-9. They saw that these mice also had a profound resistance to melanoma growth. This is the first reported finding showing an anti-tumour effect of TH9 cells.

Moreover, the researchers were able to detect TH9 cells in both normal human blood and skin, specifically in skin-resident memory T cells and memory T cells in peripheral blood mononuclear cells. In contrast, TH9 cells were either absent or present at very low levels in human melanoma. This new finding paves the way for future studies that will assess the role of interleukin-9 and TH9 cells in human cancer therapy.

Melanoma is the most dangerous form of skin cancer. It is curable if recognized and treated early. The study has been published online in Nature Medicine.



Source - The Hindu

Sunburn ‘may clean up cells with genetic damage before becoming cancer

The biological mechanism of sunburn - the reddish, painful, protective immune response from ultraviolet (UV) radiation - is a consequence of RNA damage to skin cells, a new study has found.

The findings, by researchers at the University of California, San Diego School of Medicine and elsewhere, open the way to perhaps eventually blocking the inflammatory process, the scientists said, and have implications for a range of medical conditions and treatments.

"For example, diseases like psoriasis are treated by UV light, but a big side effect is that this treatment increases the risk of skin cancer,” Richard L. Gallo, principal investigator of the study, said.

"Our discovery suggests a way to get the beneficial effects of UV therapy without actually exposing our patients to the harmful UV light. Also, some people have excess sensitivity to UV light, patients with lupus, for example. We are exploring if we can help them by blocking the pathway we discovered,” he said.

Using both human skin cells and a mouse model, Gallo, first author Jamie J. Bernard, a post-doctoral researcher, and colleagues found that UVB radiation fractures and tangles elements of non-coding micro-RNA - a special type of RNA inside the cell that does not directly make proteins. Irradiated cells release this altered RNA, provoking healthy, neighbouring cells to start a process that results in an inflammatory response intended to remove sun-damaged cells.

"The inflammatory response is important to start the process of healing after cell death,” Gallo said.

"We also believe the inflammatory process may clean up cells with genetic damage before they can become cancer. Of course, this process is imperfect and with more UV exposure, there is more chance of cells becoming cancerous,” he added.

The study has been published in the Advance Online Publication of Nature Medicine.

Source - The Hindu