A morphometric study of the human mandible in the Indian population for sex determination

Sex determination from bones is important in forensic investigations for establishing identity in cases of mutilated bodies. Many morphometric criteria have been laid down for various bones for sex determination in previous studies. The present study aimed at setting up some parameters of the mandible as indicators of sex in the Indian population. The length of body of the mandible, angle of the mandible and minimum ramus breadth were considered as chief parameters for sex determination from dried bones obtained from the Departments of Anatomy in two medical colleges of Punjab and Chandigarh. There was a statistically significant difference found in the diagonal length, horizontal length and minimum ramus breadth with their mean values 79.77 ± 4.68 mm, 71.99 ± 4.54 mm and 30.93 ± 2.56 mm in adult males, respectively and 73.83 ± 4.84 mm, 68.62 ± 4.78 mm and 29.57 ± 2.86 mm in adult females, respectively, whereas no significant difference was found in the mandibular angle of males and females. The parameters used for the present study gave an overall 60% accuracy in determining the sex of the mandible

Optimizacija kitozanskih filmova kao zamjena za životinjsku i humanu epidermu za in vitro permeaciju polarnih i nepolarnih lijekova

The present investigation is aimed at preparing chitosan films capable of simulating the flux of modal drugs, 5-fluorouracil (5-FU) and indomethacin (INDO), across rat, rabbit and human cadaver epidermal sheets. Application of statistical design revealed that the concentration of chitosan, crosslinking time and concentration of crosslinking agent significantly influenced the in vitro flux of 5-FU and INDO across chitosan films. Multiple linear regression revealed a linear influence of all these active variables on 5-FU and INDO flux. It was deduced from atomic absorption spectroscopic analyses, DSC and IR spectroscopic data that 5% (m/V) sodium tripolyphosphate (NaTPP) produced optimum crosslinking of chitosan films. The in vitro permeation of both 5-FU and INDO across optimized film formulations was found to be comparable to that obtained across rat, rabbit and human epidermal sheets. These results indicate that optimized chitosan films have a potential to be developed as a substitute for animal and human cadaver epidermal sheets for preliminary in vitro permeation studies.U radu je opisana priprava kitosanskih filmova pogodnih za simulaciju prijelaza modelnih lijekova, 5-fluorouracila (5-FU) i indometacina (INDO), kroz epidermalne slojeve štakora, zeca i čovjeka. Koncentracija kitosana, vrijeme umrežavanja i koncentracija reagensa za umrežavanje značajno su utjecale na in vitro prolaz 5-FU i INDO kroz kitosanske filmove. Multiplom linearnom regresijom pokazano je da sve navedene varijable imaju linearni utjecaj na prolaz 5-FU i INDO. Uz pomoć atomske apsorpcijske spektralne analize, DSC i IR spektroskopskih podataka zaključeno je da je 5%-tna (m/V) otopina natrijevog tripolifosfata (NaTPP) najoptimalnija za umrežavanje kitosanskih filmova. Pronađeno je da je in vitro permeacija 5-FU i INDO kroz optimiziranu formulaciju kitozanskog filma usporediva s permeacijom kroz epidermalne slojeve štakora, zeca i čovjeka. Rezultati upućuju da se optimizirani kitozanski filmovi mogu upotrijebiti kao nadomjestak animalne i humane epiderme u preliminarnim in vitro permeacijskim istraživanjima

Optimizacija kitozanskih filmova kao zamjena za životinjsku i humanu epidermu za in vitro permeaciju polarnih i nepolarnih lijekova

The present investigation is aimed at preparing chitosan films capable of simulating the flux of modal drugs, 5-fluorouracil (5-FU) and indomethacin (INDO), across rat, rabbit and human cadaver epidermal sheets. Application of statistical design revealed that the concentration of chitosan, crosslinking time and concentration of crosslinking agent significantly influenced the in vitro flux of 5-FU and INDO across chitosan films. Multiple linear regression revealed a linear influence of all these active variables on 5-FU and INDO flux. It was deduced from atomic absorption spectroscopic analyses, DSC and IR spectroscopic data that 5% (m/V) sodium tripolyphosphate (NaTPP) produced optimum crosslinking of chitosan films. The in vitro permeation of both 5-FU and INDO across optimized film formulations was found to be comparable to that obtained across rat, rabbit and human epidermal sheets. These results indicate that optimized chitosan films have a potential to be developed as a substitute for animal and human cadaver epidermal sheets for preliminary in vitro permeation studies.U radu je opisana priprava kitosanskih filmova pogodnih za simulaciju prijelaza modelnih lijekova, 5-fluorouracila (5-FU) i indometacina (INDO), kroz epidermalne slojeve štakora, zeca i čovjeka. Koncentracija kitosana, vrijeme umrežavanja i koncentracija reagensa za umrežavanje značajno su utjecale na in vitro prolaz 5-FU i INDO kroz kitosanske filmove. Multiplom linearnom regresijom pokazano je da sve navedene varijable imaju linearni utjecaj na prolaz 5-FU i INDO. Uz pomoć atomske apsorpcijske spektralne analize, DSC i IR spektroskopskih podataka zaključeno je da je 5%-tna (m/V) otopina natrijevog tripolifosfata (NaTPP) najoptimalnija za umrežavanje kitosanskih filmova. Pronađeno je da je in vitro permeacija 5-FU i INDO kroz optimiziranu formulaciju kitozanskog filma usporediva s permeacijom kroz epidermalne slojeve štakora, zeca i čovjeka. Rezultati upućuju da se optimizirani kitozanski filmovi mogu upotrijebiti kao nadomjestak animalne i humane epiderme u preliminarnim in vitro permeacijskim istraživanjima

Reliability and Analysis of Changes in Bite Marks at Different Time Intervals and Temperature Ranges

Objectives: The purpose of this study is to assess time-dependent changes in the morphology of bitemarks and to investigate the utility of matching bitemarks on both perishable and non-perishable objects with the passage of time at different temperatures. Subjects and Methods: The study was conducted at Maharana Pratap College of Dentistry and Research Centre, Gwalior, India. 20 volunteers were asked to bite 6 items each. These included perishable and nonperishable items. Perishable items were apple, banana and Burfi, (a milk-based popular sweet confectionary) while non-perishable items included wax, clay, and rubber. Photographs were taken with a digital camera at 0-hours and 24-hours after biting these objects at temperature ranges of 24 ºC to 28 ºC and 36 ºC to 40 ºC, respectively. Life-size photographs of these bitten objects were printed on transparent overlays and compared to hand drawn transparencies prepared from suspect dentition using an X-ray viewer. The comparison of all the 960 transparencies was done by two researchers, independently. Results: All objects gave a positive identification of the biter on matching just after biting. After24-hours, all items also showed positive matching except banana and apples. Conclusion: This proposed method is simple, reliable and less technique sensitive. It narrows down the subjectivity of interpretation. It highlights that due to decomposition changes occur in perishable food items and more so in apples and bananas, making bitemarks less reliable evidence