Palm Side Of Hand Research Articles

Ultra-weak photon emission of hands in aging prediction

Aging has been one of the several topics intensely investigated during recent decades. More scientists have been scrutinizing mechanisms behind the human aging process. Ultra-weak photon emission is known as one type of spontaneous photon emission that can be detected with a highly sensitive single photon counting photomultiplier tube (PMT) from the surface of human bodies. It may reflect the body's oxidative damage. Our aim was to examine whether ultra-weak photon emission from a human hand is able to predict one's chronological age. Sixty subjects were recruited and grouped by age. We examined four areas of each hand: palm side of fingers, palm side of hand, dorsum side of fingers, and dorsum side of hand. Left and right hand were measured synchronously with two independent PMTs. Mean strength and Fano factor values of photon counts were utilized to compare the UPE patterns of males and females of different age groups. Subsequently, we utilized UPE data from the most sensitive PMT to develop an age prediction model. We randomly picked 49 subjects to construct the model, whereas the remaining 11 subjects were utilized for validation. The results demonstrated that the model was a good regression compared to the observed values (Pearson's r=0.6, adjusted R square=0.4, p=9.4E−7, accuracy=49/60). Further analysis revealed that the average difference between the chronological age and predicted age was only 7.6±0.8years. It was concluded that this fast and non-invasive photon technology is sufficiently promising to be developed for the estimation of biological aging.

Combined implantation of bilateral flaps of toe on reconstruction of thumb and other fingers in the skin degloving injury of the hand at one stage

目的 探讨足趾皮瓣瓦合组合移植一期修复全手套脱伤并拇手指再造的临床疗效.方法 采用(足母)甲皮瓣加第二趾胫侧皮瓣瓦合再造拇指,带足背皮瓣覆盖手背,(足母)趾腓侧皮瓣与第二趾甲皮瓣瓦合再造手指带足背皮瓣覆盖手背和股前外侧皮瓣覆盖手掌创面3例;采用双侧(足母)趾腓侧皮瓣加第二趾甲皮瓣瓦合双手指,带双足背皮瓣覆盖手背及股前外侧皮瓣覆盖手掌创面2例.结果 术后4例成活顺利,1例组合皮瓣成活,因示指指骨感染而将其切除后伤口愈合.随访半年以上3例,因手掌皮瓣臃肿行整形术,再造拇、手指外形良好,虎口开大4～5 cm,恢复了痛、温、触觉,再造拇、手指瓦合皮瓣两点分辨觉在5～10 mm,手掌10～15mm,修复拇手指均有2 kg以上提力,并有较为满意的外观.另2例时间短,其中1例指外形良好,手掌皮瓣臃肿,轻微抓握作用,虎口开大3 cm.另1例示指感染后畸形,虎口开大2.5 cm,有轻微夹持作用.结论 双足趾皮瓣瓦合移植在全手脱套伤中的拇手指再造改善指外形、保留足趾数是理想的方法。

Peripheral Nerve Lesions of Experimental Leprosy in Monkeys

Histopathological findings of intrafascicular-edema found in n. ulnaris running at forearm, palmside of hand and fingers of rhesus monkey 8664 and african green monkey 8175 were studied by semithin section method. These two monkeys were inoculated with leprosy bacilli from lepromata of mangabey monkey A022. The mangabey monkey A022 had been experimental leprosy after inoculum of the leprosy bacilli from lepromata of the mangabey monkey A015-natural infection. Period between date of inoculum and sacrifice of the rhesus monkey 8664 was about 2 years, and the african green monkey 8175 was about 5 years. Results found were: 1. Intrafascicular-edema found in n. ulnaris running at forearm, palmside of hand and fingers was remarkable at some of peculiar anatomical areas where were put on mechanical pressure. 2. The intrafascicular-edema inside many fascicles was remarkable around the small blood vessels. 3. Obsruction of the small blood vessels and congestion of blood stream at surrounded of the intrafascicular-edema with fibrous elements and cellular elements were observed inside some of fascicles. 4. Bundles of peripheral nerve fibers inside some of fascicles were pressed by the intrafascicular-edema, and the fibrous elements, especially collagen fibers, were increased around the pressed bundles of nerve fibers and each nerve fiber inside the fascicles. 5. Vacuolar degeneration and swelling of axon were observed at some of myelinated nerve fibers. 6. Not only the intrafascicular-edema but also a large amount of intracytoplasmic foamy structures with solid leprosy bacilli were observed inside many fascicles.(ABSTRACT TRUNCATED AT 250 WORDS)