(E)-N,N-Diethyl-4-{[(4-meth-oxy-phen-yl)imino]-meth-yl}aniline: crystal structure, Hirshfeld surface analysis and energy framework.

In the title benzyl-ideneaniline Schiff base, C18H22N2O, the aromatic rings are inclined to each other by 46.01 (6)°, while the Car-N= C-Car torsion angle is 176.9 (1)°. In the crystal, the only identifiable directional inter-action is a weak C-H⋯π hydrogen bond, which generates inversion dimers that stack along the a-axis direction.

Syntheses, crystal structures, Hirshfeld surface analyses and energy frameworks of two 4-amino-anti-pyrine Schiff base compounds: (E)-4-{[4-(di-ethyl-amino)-benzyl-idene]amino}-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one and (E)-4-[(4-fluoro-benzyl-idene)amino]-1,5-dimethyl-2-phenyl-1H-pyrazol-3(2H)-one.

The title Schiff base compounds, C22H26N4O (I) and C18H16FN3O (II), were each synthesized by a single-step condensation reaction. The substituted benzyl-idene ring is inclined to the pyrazole ring mean planes by 22.92 (7)° in I and 12.70 (9)° in II. The phenyl ring of the 4-amino-anti-pyrine unit is inclined to the pyrazole ring mean plane by 54.87 (7)° in I and by 60.44 (8)° in II. In the crystal of I, the mol-ecules are linked by C-H⋯O hydrogen bonds and C-H⋯π inter-actions to form layers lying parallel to (001). In the crystal of II, the mol-ecules are linked by C-H⋯O and C-H⋯F hydrogen bonds and C-H⋯π inter-actions, thereby forming layers lying parallel to (010). Hirshfeld surface analysis was employed to further qu-antify the inter-atomic inter-actions in the crystals of both compounds.

Concomitant laparoscopic ventral hernia mesh repair and bariatric surgery: a retrospective study from a tertiary care center.

OBJECTIVE: To analyze the safety in combing laparoscopic ventral hernia repair with a mesh and bariatric surgery. BACKGROUND: Obesity is one of the important precipitating factors for primary and recurrent ventral hernias (incisional and umbilical) and it is not uncommon to find these hernias in patients opting for obesity surgery. But, with no consensus or recommendation and concern of mesh infection, surgeons fear in combining these procedures, especially Roux en Y gastric bypass and sleeve gastrectomy. METHODS: In this study, we have retrospectively analyzed all patients who underwent concomitant bariatric procedure and mesh repair for ventral hernia at our institute. RESULTS: A total of 36 out of 765 patients operated at our institute between 2003 and 2011 had concomitant procedures. Eleven patients had Roux en Y gastric bypass (group I) and remaining 25 had sleeve gastrectomy (group II) performed on them. The operating times were 149 min(120-210 min) in group I and 122 min (90-220min) in group II. No immediate complications or any incidence of mesh infection or recurrence in either of the groups. CONCLUSION: Concomitant mesh repair for ventral hernias can be safely combined with bariatric procedures like Roux en Y gastric bypass and sleeve gastrectomy. But, for beginners, these should be done only in selected cases after fully informed consent from the patients.

Is laparoscopic duodenojejunal bypass with sleeve an effective alternative to Roux en Y gastric bypass in morbidly obese patients: preliminary results of a randomized trial.

BACKGROUND: The incidence of obesity and related metabolic disorders in India and that of stomach carcinoma is one of the highest in the world. Hence, one requires a procedure that allows postoperative surveillance of the stomach with the best outcomes in terms of weight control and resolution of co-morbidities. Here, we compare one such procedure, duodenojejunal bypass with sleeve against the standard Roux-en Y gastric bypass. METHODS: Fifty-seven patients who were selected for a bypass procedure were randomized into two groups of laparoscopic duodenojejunal bypass with sleeve (DJB) and laparoscopic Roux en Y gastric bypass. The limb lengths were similar in both the groups, and the sleeve was done over a 36F bougie. RESULTS: The mean body mass index and percent excess weight loss at the end of 3, 6, and 12 months between the groups were not statistically significant. The operating times were higher in the DJB group. The rate of resolution of diabetes, hypertension, and dyslipidemias were also similar with no statistical significance. There was 100% resolution of dyslipidemias in both groups. There was one patient in the DJB group who presented with internal herniation 1 month post-op and was managed surgically. There was no mortality in both the groups. CONCLUSION: Laparoscopic duodenojejunal with sleeve gastrectomy, a procedure which combines the principles and advantages of sleeve gastrectomy and foregut hypothesis, is a safe and effective alternative to gastric bypass in weight reduction and resolution of co-morbidities especially for Asian countries. But, long-term follow-up is required.

Laparoscopic duodenojejunal bypass with sleeve gastrectomy: preliminary results of a prospective series from India.

BACKGROUND: Bariatric surgeries are now redefined as metabolic surgeries given the excellent resolution of metabolic derangements accompanying obesity. Duodenojejunal bypass (DJB) is a novel metabolic surgery based on foregut hypothesis. Reports describe DJB as a stand-alone procedure for the treatment of diabetes in nonobese subjects. For obese subjects, DJB is combined with sleeve gastrectomy. This combination of DJB and sleeve gastrectomy is proposed as an ideal alternative to Roux-en-Y gastric bypass (RYGB) with these advantages: (1) easy postoperative endoscopic surveillance, (2) preservation of the pyloric mechanism, which prevents dumping syndrome, and (3) reduced alimentary limb tension. This study aimed to analyze the short-term outcomes of laparoscopic DJB with sleeve gastrectomy for morbidly obese patients. METHODS: At our institution, 38 patients who underwent laparoscopic DJB with sleeve gastrectomy were followed up. The inclusion criteria for the study were according to the Asian Pacific Bariatric Surgery Society guidelines. Sleeve gastrectomy was performed over a 36-Fr bougie, with the first part of the duodenum mobilized and transected. The jejunum was divided 50 cm distal to duodenojejunal flexure. A 75- to 150-cm alimentary limb was fashioned and brought in a retrocolic manner. End-to-end hand-sewn duodenojejunostomy was performed. Intestinal continuity was restored with a stapled jejunojejunostomy, and mesenteric rents were closed. RESULTS: The study population consisted of 38 patients (15 men and 23 women) ranging in age from 31 to 48 years. During a mean follow-up period of 17 months, the excess body weight loss was 72%, with a 92% resolution of diabetes. One patient presented with internal herniation through the retrocolic window 1 month after the operation and was managed surgically without any complication. No other minor or major complications occurred, and there was no mortality. CONCLUSION: Laparoscopic DJB with sleeve gastrectomy is safe and effective in achieving durable weight loss and excellent resolution of comorbidities. Long-term follow-up studies are needed.

Synthesis, growth and characterization of 4-bromo-4'chloro benzylidene aniline--a third order non linear optical material.

The organic nonlinear optical material of 4-bromo-4'chloro benzylidene aniline (BCBA) was synthesized and single crystal of BCBA was grown from acetone solution by solvent evaporation method at room temperature. Its three dimensional structure was elucidated from single crystal X-ray diffraction analysis at 173 K. Synthesized compound of BCBA was subjected to FTIR and (1)H and (13)C NMR spectral analyses. The range and percentage of optical transmission of BCBA was determined by UV-vis-NIR spectrum and its fluorescence spectrum was recorded using spectrofluorometer. The mechanical strength of the crystal was estimated using Vickers microhardness test on the (001) plane. Dielectric constant of the grown crystal was measured for various frequencies along (001) plane. The third order nonlinear optical properties of BCBA were investigated by Z-scan technique with He-Ne laser radiation of wavelength at 632.8 nm and the corresponding nonlinear refractive index, absorption coefficient and optical susceptibility were calculated.