Cognitive impairment is one of the core symptoms of schizophrenia, and there is no recognized effective treatment for it. Current studies have found that treatment targeting the N-methyl-D-aspartate receptor (NMDAR) can improve cognitive function in patients with schizophrenia. This article reviewed the research progress of NMDAR-related modulators in improving cognitive impairment of schizophrenia, summarized the application of D-serine, glycine, D-cycloserine, memantine, etc., and discussed the current research deficiencies and future research directions .

Cognitive impairment is one of the core symptoms of schizophrenia, and there is no recognized effective treatment for it. Current studies have found that treatment targeting the N-methyl-D-aspartate receptor (NMDAR) can improve cognitive function in patients with schizophrenia. This article reviewed the research progress of NMDAR-related modulators in improving cognitive impairment of schizophrenia, summarized the application of D-serine, glycine, D-cycloserine, memantine, etc., and discussed the current research deficiencies and future research directions .

Objective Lab color mode can be used to digitize the color.This study explores the possibility of using Lab model to measure facial pigmentations.Methods Lab color model was used to measure the normal skin and three common clinical pigmentations (Ota nevus,freckles and melasma).We also analyzed the characteristics and assessed the data changes after the treatment.Results Average L,a and b values were 54.4,13.8 and 19.0 in normal skin,34.6,5.17 and 6.9 in Ota nevus,43.25,16.15 and 23.05 in freckles and 40.5,16.8 and 23.35 in melasma,respectively.The Lab values of freckles and melasma were close.The order of L value was:normal skin ＞ freckle ＞ melasma ＞Ota nevus;the order of value of a and b was:melasma ＞ freckle ＞ normal skin ＞ Ota nevus.After treatment,the Lab values gradually tended to be the values of normal skin.Conclusions The Lab color mode can be used as a digital description method for skin color and facial pigmentation,which provides an objective measure for clinical research.