Transumbilical single-port laparoscopic cholecystectomy using traditional laparoscopic instruments: a report of thirty-six cases

Objective  

To evaluate the feasibility and safety of the operation of transumbilical single-port laparoscopic cholecystectomy (TSPLC) by traditional laparoscopic instruments and summarize the initial experience.     

Face processing in infancy: developmental changes in the use of different kinds of relational information

Adults use both first-order, or categorical, relations among features (e.g., the nose is above the mouth), and second-order, or fine spatial relations (e.g., the space between eyes), to process faces. Adults' expertise in face processing is thought to be based on the use of second-order relations. In the current study, 5-month-olds detected second-order changes, but 3-month-olds failed to detect second-order changes induced by 2 different manipulations. Three-month-olds did detect first-order changes, however. Also, inversion affected 5-month-olds' processing of second-order but not first-order information. These results suggest that, although sensitivity to first-order relations is available by 3 months or earlier, sensitivity to second-order information may not develop until sometime between 3 and 5 months of age.     

Influence of CO2 pneumoperitoneum on intracellular pH and signal transduction in cancer cells

Object: The authors studied the influence of CO2 pneumoperitoneum on intracellular pH and signal transduction arising from cancer cell multiplication in laparoscopic tumor operation. Method: They set up a simulation of pneumoperitoneum under different CO2 pressure, and then measured the variation of intracellular pH (pHi) at different time and the activity of protein kinase C (PKC) and protein phosphatase 2a (PP2a) at the end of the pneumoperitoneum. After 1 week, the concentration of cancer cells in the culture medium was calculated. Result: When the pressure of CO2 pneumoperitoneum was 0, 10, 20, 30 mmHg respectively, the average pHi was 7.273, 7.075, 6.783, 6.693 at the end of the pneumoperitoneum; PKC activity was 159.4, 168.5, 178.0, 181.6 nmol/(g-min) and PP2a was 4158.3,4066.9, 3984.0, 3878.5 nmol/(g-min) respectively. After 1 week, the cancer cells concentration was 2.15×105, 2.03×105, 2.20×105, 2.18×105 L-1. Conclusion: CO2 pneumoperitoneum could promote acidosis in cancer cells, inducing the activation of protein kinase C and deactivation of protein phosphatase 2a, but it could not accelerate the mitosis rate of the cancer cells.     

Relationships among rapid digit naming, phonological processing, motor automaticity, and speech perception in poor, average, and good readers and spellers

In this article, we explore the relationship between rapid automatized naming (RAN) and other cognitive processes among below-average, average, and above-average readers and spellers. Nonsense word reading, phonological awareness, RAN, automaticity of balance, speech perception, and verbal short-term and working memory were measured. Factor analysis revealed a 3-component structure. The first component included phonological processing tasks, RAN, and motor balance. The second component included verbal short-term and working memory tasks. Speech perception loaded strongly as a third component, associated negatively with RAN. The phonological processing tests correlated most strongly with reading ability and uniquely discriminated average from below- and above-average readers in terms of word reading, reading comprehension, and spelling. On word reading, comprehension, and spelling, RAN discriminated only the below-average group from the average performers. Verbal memory, as assessed by word list recall, additionally discriminated the below-average group from the average group on spelling performance. Motor balance and speech perception did not discriminate average from above- or below-average performers. In regression analyses, phonological processing measures predicted word reading and comprehension, and both phonological processing and RAN predicted spelling.     

A comparison of types of attorney representation for children in California juvenile court dependency cases

OBJECTIVE: The present study concerns types of attorney representation for maltreated children involved in juvenile court actions in the state of California. The aims of the research were to document the different types of representation used in dependency cases in 2000 (e.g., public defender, District Attorney, private firms) and to evaluate these types of representation with respect to children's experiences in foster care. METHODS: Every county in California was surveyed about the predominant type of legal representation used in their dependency court system. In addition, data on children's experiences in foster care were obtained from the Child Welfare System/Child Management System (CWS/CMS). RESULTS: Findings indicate that, in the majority of counties in California, children were represented by the public defender's office or by a panel of court-appointed attorneys. Approximately equal numbers of counties employed county-affiliated (i.e., District Attorney, public defender, county counsel) and independent (i.e., private firm, panel of court-appointed attorneys) types of representation (47% and 52%, respectively). Further analyses suggested that children in counties employing independent types of representation tended to experience fewer foster-care placements than did children in counties employing county-affiliated types of representation. This relation remained significant when potentially confounding variables were statistically controlled. CONCLUSION: Results indicated that some types of representation, specifically, private firms and court-appointed attorneys, were associated with one better outcome for children.