Reduced Graphene Oxide Incorporated Acellular Dermal Composite Scaffold Enables Efficient Local Delivery of Mesenchymal Stem Cells for Accelerating Diabetic Wound Healing.

Chronic skin wounds caused by diabetes mellitus (DM) have been acknowledged as one of the most intractable complications. Local transplantation of mesenchymal stem cells (MSCs) is a promising method, but strategies for stabilizing and efficiently delivering active MSCs according to the wound circumstance with high proteolysis remain the main barrier. Hereon, the study demonstrates the feasibility of incorporating reduced graphene oxide (RGO) nanoparticles with an acellular dermal matrix (ADM) to improve physicochemical characteristics of natural scaffold material and fabricate a highly efficient local transplantation system for MSCs in diabetic wound healing.

[Identification of Ginseng and its counterfeit by laser Raman spectroscopy].

The objective of the present study is to identify Ginseng and its false sample: Anthriscus sylvestris, Radix glehniae and balloonflower root by Laser Raman spectroscopy, second derivative Raman spectroscopy. The structural information of the samples indicated that Ginseng and its false samples contains a large amount of carbohydrates, since some characteristic vibration peaks of the carbohydrates, such 1 640, 1 432, 1 130, 1 086, 942, 483 cm(-'1) can be observed. The characteristic vibration peak of Radix glehniae which arouse at 2 206 cm(-1) in the aman spectra, totally different from the other three kinds of traditional Chinese medicines.

Specificity of auricular acupoints in reflecting changes of qi and blood measured by diffuse reflectance spectroscopy.

Objective: This study aimed to assess the specificity of auricular acupoints in responding to changes of qi and blood which, in traditional Chinese medicine, are considered as the fundamental substances in the human body for sustaining normal vital activity.

Methods: A miniature fiber optic system was used to invasively measure the diffuse reflectance spectra of three auricular acupoints, namely, Uterus (TF2), Gan (CO12) and Neifenmi (CO18), at different stages of menstruation, when the female body exhibits regular changes of qi and blood. The spectra of different acupoints were compared to find their difference in responding changes of qi and blood, especially the reflectivity of absorption peaks of hemoglobin.

[Influence of brightness value of supranasal point and apex nasi on dominant wavelength and excitation purity in complexion inspection of healthy adults].

Objective: In this study, to analyze the influence of the brightness value of the supranasal point and the apex nasi on their dominant wavelength and excitation purity according to the spectrocolorimetry data of the supranasal point and the apex nasi in healthy adults that were collected based on optical spectrum colorimetry.

Methods: A total of 516 healthy adults were taken as the research subjects. The brightness, dominant wavelength and excitation purity values of the supranasal point and the apex nasi during the complexion inspection of subjects were calculated.

[Comparative study of reflectance spectroscopy of women's acupoints around menstruation].

Acupoint was reaction of viscera and its optical parameter was an important characteristic of tissue. In the present work, in order to discuss specificity of acupuncture on the response of qi and blood in human body, we compared the diffuse reflectance of Taichong (LV3), Taibai (SP3), and Chongyang (ST42) before, during and after menstruation. All the acupoints had the same shape of the spectrum and troughs were all at 423.

[Comparative study of reflectance spectroscopy of human laogong acupoint and non-acupoint tissues irradiated by near-infrared laser].

Characteristics and differences of reflectance spectroscopy of human Laogong acupoint and non-acupoint tissues before and after irradiation by different power of laser were studied in the spectral range from 400 to 1 000 nm. A wavelength 808 nm semiconductor laser was used for irradiation at the power of 20, 50 and 100 mW for ten minutes. Reflectance spectra of human Laogong acupoint and non-acupoint tissues were measured by using an AvaSpec-2048 optical fiber spectroscopy with an integrating sphere attachment.