Mucosa color and size may indicate malignant transformation of chicken skin mucosa-positive colorectal neoplastic polyps.

Background: Lipid metabolism reprogramming is suspected to exist in pre-cancerous lesions, including colorectal adenoma. Screening colonoscopy frequently reveals chicken skin mucosa (CSM; white or yellow-white speckled mucosa) surrounding colorectal polyps, caused by macrophages engulfing and accumulating the lipids decomposed by colon cells or adjacent tumors. CSM-positive colorectal polyps are associated with various diseases; however, their prognosis varies greatly.

Chicken skin mucosa surrounding small colorectal cancer could be an endoscopic predictive marker of submucosal invasion.

Background: Chicken skin mucosa (CSM) surrounding colon polyps is a common endoscopic finding with pale yellow-speckled mucosa during a colonoscopy screening. Although reports about CSM surrounding small colorectal cancer are scarce, and its clinical significance in intramucosal and submucosal cancers is unclear, previous studies have suggested it could be an endoscopic predictive marker for colonic neoplastic and advanced polyps. Currently, because of the inaccurate preoperative evaluation by endoscopists, many small colorectal cancers, particularly lesions with a diameter < 2 cm, are improperly treated.

Effect of laparoscopic surgery for colorectal cancer with N. O. S. E. on recovery and prognosis of patients.

Objective: To investigate the effect of laparoscopic surgery in colorectal cancer (CRC) patients with natural orifice specimen extraction (NOSE) on the recovery and quality of life (QOL) of patients.

Material And Methods: Ninety-two eligible patients were randomly assigned into two groups: the traditional laparoscopy group (L group,  = 46) and the laparoscopic transanal specimen extraction group (NL group,  = 46). General data, surgery-related indicators, postoperative recovery, and prognosis were compared and analyzed between the two groups.

[Design, synthesis and evaluation of novel 2H-1, 4-benzodiazepine-2-ones as inhibitors of HIV-1 transcription].

HIV-1 trans-activator of transcription (Tat) plays a critical role in HIV-1 transcription. Based on the beta-turn motif present in HIV-1 Tat, a series of novel benzodiazepine analogs were designed as beta-turn mimetics and prepared from p-chloro-nitrobenzene/2-phenylacetonitrile, p-toluidine/benzoyl chloride, or (Z)-7-nitro-5-phenyl-1H-benzo[e][1, 4]diazepin-2(3H)-one (nitrazepam) through different synthetic routes. Preliminary biological evaluation indicated that compound 30 exhibited inhibitory activity on HIV-1 tat-mediated LTR transcription with EC50 of 25.

(E)-3-(2-Hydr-oxy-3-methoxy-benzyl-idene-amino)benzonitrile.

The mol-ecule of the title compound, C(15)H(12)N(2)O(2), displays a trans configuration with respect to the C=N double bond. The dihedral angle between the two benzene rings is 30.46 (14)°.

(E)-2-[(5-Bromo-2-hydroxy-benzyl-idene)amino]benzonitrile.

In the mol-ecule of the title compound, C(14)H(9)BrN(2)O, the dihedral angle between the aromatic rings is 1.09 (4)°. Intra-molecular O-H⋯N hydrogen bonding results in the formation of a planar (r.

(E)-2-[(3,5-Di-tert-butyl-2-hydroxy-benzyl-idene)amino]benzonitrile.

The asymmetric unit of the title compound, C(22)H(26)N(2)O, contains three crystallographically independent mol-ecules, in which the aromatic rings are oriented at dihedral angles of 21.74 (5), 27.59 (5) and 27.

(Z)-2-[(2-Hydr-oxy-1-naphth-yl)methyl-eneamino]benzonitrile.

The title compound, C(18)H(12)N(2)O, crystallizes in a phenol-imine tautomeric form with a Z conformation for the imine functionality. The dihedral angle between the aromatic rings is 8.98 (9)°.

(E)-3-(2-Hydr-oxy-4-methoxy-benzyl-idene-amino)benzonitrile.

In the mol-ecule of the title compound, C(15)H(12)N(2)O(2), the aromatic rings are oriented at a dihedral angle of 28.11 (3)°. Intra-molecular O-H⋯N hydrogen bonding results in the formation of a planar six-membered ring, which is nearly coplanar with the adjacent ring at a dihedral angle of 1.

(E)-3-[(4-Diethyl-amino-2-hydroxy-benzyl-idene)amino]benzonitrile.

The mol-ecule of the title compound, C(18)H(19)N(3)O, displays a trans configuration with respect to the C=N double bond. There is a strong intra-molecular O-H⋯N hydrogen-bonding inter-action between the hydr-oxy group and imine N atom. The dihedral angle between the aromatic rings is 30.

(E)-4-[4-(Dimethyl-amino)benzyl-ideneamino]benzonitrile.

The mol-ecule of the title compound, C(16)H(15)N(3), displays a trans configuration with respect to the C=N double bond. The mol-ecule is not planar, the dihedral angle between the benzene rings being 57.83 (9)°.

1-(4-tert-Butyl-benz-yl)-2-(4-tert-butyl-phen-yl)-1H-benzimidazole.

In the mol-ecule of the title compound, C(28)H(32)N(2), the benzimidazole ring system is almost planar [maximum deviation = 0.0221 (15) Å] and forms dihedral angles of 85.86 (4) and 32.