Oozing mouth ulcers(溃疡) are one of the many possible side-effects of radiation and chemotherapy treatments for cancer. The ulcers make it hard for patients to eat, worsening their suffering. Some must be fed by tube. A new way of treating these ulcers could brighten the future(带来光明/改善前景), however: light-emitting diodes (LEDs) tuned to the red end of the spectrum(光谱) and placed into a patient’s mouth improve symptoms in more than half of cases.
口腔溃疡是癌症放疗和化疗可能产生的众多副作用之一。溃疡使患者进食困难，加剧了他们的痛苦。有些人不得不通过鼻饲管进食。然而，一种治疗这些溃疡的新方法可能会带来光明：将调至光谱红端的发光二极管（LED）放入患者口中，在超过一半的病例中改善了症状。
Faster wound-healing is just one of the proposed uses of photobiomodulation(光生物调节) (PBM), as therapies that use red and infrared light as the agent are known. Ophthalmologists and dermatologists(皮肤科医生) have been using red light for some time to treat age-related decline in eyes and skin respectively. But PBM is also showing promise(显示出前景) in the treatment of traumatic(创伤性的) brain injuries; Alzheimer’s and Parkinson’s diseases; and even psychiatric(精神病的) disorders such as anxiety, depression, attention-deficit and hyperactivity, and post-traumatic stress.
更快的伤口愈合只是光生物调节（PBM）的拟议用途之一——这种疗法以红光和红外光为作用媒介。眼科医生和皮肤科医生使用红光治疗眼睛和皮肤与年龄相关的衰退已有一段时间。但PBM在治疗创伤性脑损伤、阿尔茨海默病和帕金森病，甚至焦虑、抑郁、注意缺陷多动障碍和创伤后应激等精神疾病方面也显示出前景。
The long wavelengths(波长) of red and infrared(红外线的) light give these parts of the spectrum tissue-penetrating(穿透组织的) power. That permits such light to reach and be absorbed by molecules of cytochrome c oxidase(细胞色素c氧化酶), a protein found in structures called mitochondria(线粒体) that are a cell’s power packs. The protein helps turn the energy from glucose into a molecule called ATP(三磷酸腺苷), which powers much of a cell’s biochemistry.
红光和红外光的长波长赋予光谱这些部分穿透组织的能力。这使得此类光能够到达并被细胞色素c氧化酶分子吸收，这种蛋白质存在于称为线粒体的结构中，而线粒体是细胞的能量包。这种蛋白质有助于将葡萄糖中的能量转化为一种称为ATP的分子，ATP为细胞的大部分生化过程提供动力。
Chain gang
链条帮
Well and good?
好吗？