Retinocytoma is a benign tumor arising from the retina.Since it was first described by Gallie in 1982,retinocytoma has been progressively recognized.More and more clinical and pathological studies indicate that retinocytoma may be a early stage or a type of retinoblastoma.Retinocytoma is difficult to be found because of lack clinical signs.Therefore,it is very important for us to follow-up and screen the families of RB patient in order to intervene with the course of disease as early as possible for preventing and arresting the malignization of retinocytoma toward RB.The name alteration,clinical manifestations,histopathological features,molecular mechanism and heredity characteristics were reviewed.

OBJECTIVETo investigate the expression of PI3K p85alpha in normal colorectal tissue, colorectal adenoma and primary colorectal carcinoma and explore its significance in the progression of colorectal cancer.

METHODSThe expression of PI3K p85alpha was detected in 116 normal colorectal tissue, colorectal adenoma and primary colorectal carcinoma specimens using immunohistochemical staining, and the relationship between the expression of PI3K p85alpha protein and the clinicopathological factors was analyzed.

RESULTSThe positivity rates of the expression of PI3K p85alpha protein increased gradually in the progression of colorectal cancer and showed significant differences between the tissues (P<0.05). A significant difference was also noted in the positivity rates of the PI3K p85alpha expression in colorectal carcinoma tissues at different Dukes' stages (P<0.05). No obvious correlation was found between PI3K p85alpha expression and the degree of the tumor differentiation.

CONCLUSIONSAbnormal PI3K p85alpha expression occurs in the progression of colorectal cancer in close relation to the clinical stage, and the PI3K/AKT pathway plays an important role in the progression of colorectal cancer.

Adenoma ; enzymology ; pathology ; Adult ; Aged ; Carcinoma ; enzymology ; pathology ; Colorectal Neoplasms ; enzymology ; pathology ; Disease Progression ; Humans ; Immunohistochemistry ; Middle Aged ; Phosphatidylinositol 3-Kinases ; metabolism ; Signal Transduction ; Young Adult

Ulcerative colitis (UC) is a chronic non-specific intestinal inflammatory disease. Whether surgical treatment should be taken is a difficult and focus decision of clinical practice. Studies have shown that severe complications, combined with severe infection, poor laboratory indices, and ineffective medical treatment are the evaluation elements of UC surgery. This article reviewed the advances in study on high risk factors of surgery with UC.

AIM: To observe the changes of the morphology and structure of macula, blood flow density of macula and optic disc, as well as retinal nerve fiber layer thickness by optical coherence tomography(OCT)and optical coherence tomography angiography(OCTA)in patients with rhegmatogenous retinal detachment(RRD)under went sclera buckling(SB). METHODS: As a cross-sectional case-controlled study, 25 patients(25 eyes)were diagnosed with RRD in the department of ophthalmology, Ganzhou People's Hospital from July 2014 to March 2021. The differences in the vascular density(VD)of superficial vessel cluster(SVC), the VD of deep vessel cluster(DVC)of macula, the SVC-VD of optic disc, retinal nerve fiber layer(RNFL), central macular thickness(CMT), subfoveal choroidal thickness(SFCT)and outer structure of macula between the affected eyes and healthy eyes at the last post-operative follow-up were compared, and the correlation indicators affecting best corrected visual acuity(BCVA, LogMAR)of the affected eyes at the last follow-up were analyzed. RESULTS: There were no statistically significant in SVC-VD and DVC-VD of macula, SVC-VD of optic disc, RNFL, CMT, SFCT between the affected eyes and healthy eyes at the last post-operative follow-up(all P>0.05); At the last follow-up visit, the comparison of macular outer structure on OCT between the affected eyes and the healthy eyes showed that the light band integrity of the external limiting membrane(ELM), myoid zone(MZ), ellipsoid zone(EZ)and outer segment of photoreceptor(OS)had no statistically significant difference(all P>0.05), while the light band integrity of interdigitation zone(IZ)had significant difference(P=0.014); The difference of BCVA(LogMAR)between the affected eyes and the healthy eyes at the last follow-up was statistically significant(P=0.002). There was significant correlation between BCVA(LogMAR)of affected eyes at the last post-operative follow-up and the presence or absence of macular involvement, the correlated with SVC-VD of optic disc, the integrity of the light bands of ELM, MZ, EZ, OS and IZ on the outer structure of macula, it was positively correlated with the presence or absence of macular involvement(rs=0.401, P=0.047)and it was negatively correlated with SVC-VD of optic disc, the integrity of the light bands of ELM, MZ, EZ, OS and IZ on the outer structure of macula(all P<0.05).CONCLUSION: The OCT and OCTA can be used to observe fundus changes after SB surgery for RRD to obtain long-term follow-up information related to vision prognosis, and visual prognosis depends on the recovery of retinal outer structure, and the integrity of IZ structure is more important for visual recovery; The SVC-VD of optic disc is correlated with visual prognosis, and whether it was correlated with intraocular pressure require further observation and verification with postoperative continuous data.

Objective: Exposure to microgravity results in postflight cardiovascular deconditioning in astronauts. Vascular oxidative stress injury and mitochondrial dysfunction have been reported during this process. To elucidate the mechanism for this condition, we investigated whether mitochondrial oxidative stress regulates calcium homeostasis and vasoconstriction in hindlimb unweighted (HU) rat cerebral arteries. Methods: Three-week HU was used to simulate microgravity in rats. The contractile responses to vasoconstrictors, mitochondrial fission/fusion, Ca Results: An increase of cytoplasmic Ca Conclusion The present results suggest that mitochondrial oxidative stress enhances cerebral vasoconstriction by regulating calcium homeostasis during simulated microgravity.
Animals ; Calcium/metabolism* ; Cerebral Arteries ; Homeostasis ; Male ; Mitochondria/physiology* ; Myocytes, Smooth Muscle/physiology* ; Oxidative Stress ; Rats ; Rats, Sprague-Dawley ; Vasoconstriction/physiology* ; Weightlessness Simulation

Chemical constituents were isolated and purified from fruiting bodies of Ganoderma calidophilum by various column chromatographic techniques, and their chemical structures were identified through combined analysis of physicochemical properties and spectral data. As a result, 11 compounds were isolated and identified as(24E)-lanosta-8,24-dien-3,11-dione-26-al(1), ganoderone A(2), 3-oxo-15α-acetoxy-lanosta-7,9(11), 24-trien-26-oleic acid(3),(23E)-27-nor-lanosta-8,23-diene-3,7,25-trione(4), ganodecanone B(5), ganoderic aldehyde A(6), 11β-hydroxy-lucidadiol(7), 3,4-dihydroxyacetophenone(8), methyl gentiate(9), ganoleucin C(10), ganotheaecolumol H(11). Among them, compound 1 is a new triterpenoid. The cytotoxic activities of all of the compounds against tumor cell lines were evaluated. The results showed that compounds 1, 3, 4 and 6 showed cytotoxic activity against BEL-7402, with IC_(50) values of 26.55, 11.35, 23.23, 18.66 μmol·L~(-1); compounds 1 and 3-6 showed cytotoxic activity against K562, with IC_(50) values of 5.79, 22.16, 12.16, 35.32, and 5.59 μmol·L~(-1), and compound 4 showed cytotoxic activity against A549, with IC_(50) value of 42.50 μmol·L~(-1).
Cell Line, Tumor ; Fruiting Bodies, Fungal ; Ganoderma ; Molecular Structure ; Triterpenes/pharmacology*

Objective: Compare and analyze the results of the domestic Lanyi AH600 glycated hemoglobin analyzer and other different detection systems to understand the comparability of the detection results of different detectors, and establish the best cut point of Lanyi AH600 determination of haemoglobin A1c (HbA1c) in the diagnosis of diabetes. Methods: Multi center cohort study was adopted. The clinical laboratory departments of 18 medical institutions independently collected test samples from their respective hospitals from March to April 2022, and independently completed comparative analysis of the evaluated instrument (Lanyi AH600) and the reference instrument HbA1c. The reference instruments include four different brands of glycosylated hemoglobin meters, including Arkray, Bio-Rad, DOSOH, and Huizhong. Scatter plot was used to calculate the correlation between the results of different detection systems, and the regression equation was calculated. The consistency analysis between the results of different detection systems was evaluated by Bland Altman method. Consistency judgment principles: (1) When the 95% limits of agreement (95% LoA) of the measurement difference was within 0.4% HbA1c and the measurement score was≥80 points, the comparison consistency was good; (2) When the measurement difference of 95% LoA exceeded 0.4% HbA1c, and the measurement score was≥80 points, the comparison consistency was relatively good; (3) The measurement score was less than 80 points, the comparison consistency was poor. The difference between the results of different detection systems was tested by paired sample T test or Wilcoxon paired sign rank sum test; The best cut-off point of diabetes was analyzed by receiver operating characteristic curve (ROC). Results: The correlation coefficient R² of results between Lanyi AH600 and the reference instrument in 16 hospitals is≥0.99; The Bland Altman consistency analysis showed that the difference of 95% LoA in Nanjing Maternity and Child Health Care Hospital in Jiangsu Province (reference instrument: Arkray HA8180) was -0.486%-0.325%, and the measurement score was 94.6 points (473/500); The difference of 95% LoA in the Tibetan Traditional Medical Hospital of TAR (reference instrument: Bio-Rad Variant II) was -0.727%-0.612%, and the measurement score was 89.8 points; The difference of 95% LoA in the People's Hospital of Chongqing Liang Jiang New Area (reference instrument: Huizhong MQ-2000PT) was -0.231%-0.461%, and the measurement score was 96.6 points; The difference of 95% LoA in the Taihe Hospital of traditional Chinese Medicine in Anhui Province (reference instrument: Huizhong MQ-2000PT) was -0.469%-0.479%, and the measurement score was 91.9 points. The other 14 hospitals, Lanyi AH600, were compared with 4 reference instrument brands, the difference of 95% LoA was less than 0.4% HbA1c, and the scores were all greater than 95 points. The results of paired sample T test or Wilcoxon paired sign rank sum test showed that there was no statistically significant difference between Lanyi AH600 and the reference instrument Arkray HA8180 (Z=1.665,P=0.096), with no statistical difference. The mean difference between the measured values of the two instruments was 0.004%. The comparison data of Lanyi AH600 and the reference instrument of all other institutions had significant differences (all P<0.001), however, it was necessary to consider whether it was within the clinical acceptable range in combination with the results of the Bland-Altman consistency analysis. The ROC curve of HbA1c detected by Lanyi AH600 in 985 patients with diabetes and 3 423 patients with non-diabetes was analyzed, the area under curve (AUC) was 0.877, the standard error was 0.007, and the 95% confidence interval 95%CI was (0.864, 0.891), which was statistically significant (P<0.001). The maximum value of Youden index was 0.634, and the corresponding HbA1c cut point was 6.235%. The sensitivity and specificity of diabetes diagnosis were 76.2% and 87.2%, respectively. Conclusion: Among the hospitals and instruments currently included in this study, among these four hospitals included Nanjing Maternity and Child Health Care Hospital in Jiangsu Province (reference instrument: Arkray HA8180), Tibetan Traditional Medical Hospital of TAR (reference instrument: Bio-Rad Variant Ⅱ), the People's Hospital of Chongqing Liang Jiang New Area (reference instrument: Huizhong MQ-2000PT), and the Taihe Hospital of traditional Chinese Medicine in Anhui Province (reference instrument: Huizhong MQ-2000PT), the comparison between Lanyi AH600 and the reference instruments showed relatively good consistency, while the other 14 hospitals involved four different brands of reference instruments: Arkray, Bio-Rad, DOSOH, and Huizhong, Lanyi AH600 had good consistency with its comparison. The best cut point of the domestic Lanyi AH600 for detecting HbA1c in the diagnosis of diabetes is 6.235%.
Pregnancy ; Child ; Humans ; Female ; Glycated Hemoglobin ; Cohort Studies ; Diabetes Mellitus/diagnosis* ; Sensitivity and Specificity ; ROC Curve