Cancer incidence in the Puerto Rican-born population of Connecticut.

There are few published reports on cancer incidence in the Puerto Rican-born populations of the northeastern United States. In Connecticut, in the Puerto Rican-born population, which was of low socioeconomic status (i.e., 42% below the poverty level in the 1980 Census), the standardized incidence ratio (SIR) for all invasive cancers diagnosed in 1980-1986 was significantly reduced for female patients (SIR = 0.77) but not for male patients (SIR = 1.16), on the basis of expected numbers derived from incidence rates for the entire state of Connecticut. For female patients, only the SIR for cancers of the stomach, esophagus, and cervix were elevated significantly, whereas those for colorectal, lung, breast, and ovarian cancer were significantly reduced. For male patients, SIR were elevated significantly for cancer of the oral cavity, esophagus, and stomach and for leukemia, whereas none of the sites (including lung) had significantly reduced SIR. When incidence rates for Puerto Rico were used, the SIR for all sites combined was 1.99 (95% confidence interval = 1.78-2.22) for male patients but only 1.39 (95% confidence interval = 1.24-1.56) for female patients. These findings suggest sex differences in acculturation and lifestyle changes relevant to cancer risks in immigrants from Puerto Rico residing in Connecticut. Comparisons were made with cancer incidence and mortality data from other Puerto Rican immigrant populations.     

Rates of Paget's disease of bone among hospital discharges, by age and sex

Paget's disease of bone (PDB) is of particular public health interest in view of the increasing proportion of elderly persons in Western populations. Data were analyzed on 1,078 hospital discharges with PDB as the principal diagnosis among New York State residents from 1980 to 1983. Rates of PDB per 100,000 total hospitalizations and per 100,000 total population increased with age, and length of hospital stay increased with age in both sexes. These rates were not higher in males than in females except in older age groups. Population rates were similar in blacks and whites except for higher rates among blacks in the greater than or equal to 80 years of age group, and average length of hospital stay was also significantly longer for blacks in this oldest age group. The magnitude of rates suggests a small impact of PDB on morbidity as assessed by hospitalizations.     

An open-label efficacy pilot study with pimecrolimus cream 1% in adults with facial seborrhoeic dermatitis infected with HIV

BACKGROUND: Seborrhoeic dermatitis (SD) is a common dermatosis in human immunodeficiency virus (HIV)-positive patients, many of whom do not respond satisfactorily to conventional topical treatments such as corticosteroids and antifungals. OBJECTIVE: A pilot study to investigate the efficacy and tolerability of pimecrolimus cream 1% in HIV-positive patients with facial SD. METHODS: In a single-centre study, 21 HIV-infected patients with mild to severe SD were treated twice daily with pimecrolimus cream 1% for 14 days. Thereafter, treatment was discontinued and patients followed up for 5 weeks. Skin involvement at baseline and on days 7, 14, 21, 35 and 49 was assessed using a four-point clinical score and digital photography. MAIN OUTCOME MEASURES: Efficacy and safety of pimecrolimus cream 1% treatment and incidence of relapse in the follow-up phase. Results Marked improvement was seen in clinical parameters at day 7, with >or= 90% patients clear of symptoms at day 14. Relapse was observed at day 35 but signs were milder than at baseline. All patients responded to therapy, despite their immunological status. Pimecrolimus did not alter CD4(+) and CD8(+) T-cell counts or viral load during the treatment period. CONCLUSION: Pimecrolimus cream represents a new, effective therapeutic option for facial SD in HIV patients.     

Lung cancer rates in the Hispanic population of Connecticut, 1980-88.

To identify lung cancer patients of Hispanic ethnicity, surnames in the Connecticut Tumor Registry were matched with the 1980 Spanish surname list of the U.S. Bureau of the Census. Also death certificates for women with lung cancer in the registry were examined to ascertain maiden names. For women Hispanic surnames in the registry were not good indicators of ethnicity; their sensitivity was only 58 percent when compared with the decedent''s maiden name. Estimated age-specific incidence rates for lung cancer during the 1980-88 period among Hispanic men, using surnames in the registry, were lower than the rates for non-Hispanic men, as expected from studies of Hispanic mortality in the Northeast. The distribution of histologic types, including those most strongly associated with smoking, was similar for Hispanic and non-Hispanic men. Although estimated lung cancer mortality rates were low for Hispanic men defined by surname, higher standard mortality ratios for Puerto Rican-born versus other Hispanic men suggested heterogeneity in lung cancer death rates of the Hispanic population of Connecticut. Lung cancer incidence and mortality rates should continue to be monitored in the Hispanic population of Connecticut, in view of anticipated increases attributable to trends in smoking behavior, and interventions should be planned to counteract anticipated increases.     

In-vitro maturation of human germinal vesicle stage oocytes: role of cumulus cells and epidermal growth factor in the culture medium

In-vitro maturation (IVM) of oocytes is a promising technique to reduce the costs and avert the side-effects of gonadotrophin stimulation for in-vitro fertilization (IVF). The pregnancy rates from oocytes matured in vitro are much lower than those of in-vivo stimulation cycles indicating that optimization of IVM remains a challenge. Therefore, we investigated the effect of supplementation of the medium with gonadotrophins, oestradiol and epidermal growth factor (EGF) and the effect of retaining or removing the cumulus cells on nuclear and cytoplasmic maturation of immature oocytes. Human germinal vesicle (GV) oocytes obtained after gonadotrophin stimulation for intracytoplasmic sperm injection (ICSI) were cultured in a complex defined medium either supplemented with gonadotrophins, oestradiol and physiological concentrations of EGF (2 ng/ml) or gonadotrophins and oestradiol alone. The cumulus cells were either removed or kept intact. In GV stage oocytes cultured without cumulus (group I) significantly more oocytes reached the metaphase II (MII) stage at 30 h in media supplemented with EGF (64.3 versus 33.9%, P < 0.003). For oocytes cultured with intact cumulus (group II), more oocytes reached MII at 30 h than in group I, but there was no difference in medium with or without EGF supplementation (81.8 and 79.8% respectively). Cytoplasmic maturation of MII oocytes was judged from their capability to activate and fertilize after ICSI. In group I, the rates of activation and normal fertilization were similar. However, in group II, significantly more oocytes underwent normal fertilization in the EGF-supplemented than the unsupplemented group (71.7 versus 45.6%, P < 0.05). The cleavage rates of the fertilized oocytes were similar in the sibling oocyte subgroups cultured with or without EGF supplementation, but the overall cleavage rates were higher in cumulus-intact compared to cumulus-denuded oocytes (88.9 versus 47.8%, P < 0.001). Thus, supplementation of the maturation medium with EGF and maintenance of the cumulus during culture improve the nuclear and cytoplasmic maturation of human oocytes in vitro.      

The effects of co-culture with human fibroblasts on human embryo development in vitro and implantation

In a human in-vitro fertilization (IVF) programme, the effect of co- culture of embryos with human fibroblasts was evaluated with respect to pregnancy rate and embryo development. Patients were included in the study after giving informed written consent. The IVF treatments were randomly assigned by stratification of both age (<36 versus > or =36 years) and previous IVF attempts (yes versus no). After fertilization was established, the zygotes were transferred to a 4-well dish with or without fibroblasts and cultured for 2 days. On the third day after ovum pick-up (OPU), cell number and quality [5 (good) to 1 (poor)] of the embryos were scored and a maximum of three embryos was transferred. Supernumerary embryos of good quality were cryopreserved. The design of this study was a group sequential trial with the objective of detecting differences between pregnancy rates following IVF with conventional incubation or incubation in co-culture with fibroblasts. This design included one evaluation at half-way data collection. In the study, 148 patients had an OPU, of whom 77 were allocated to the co-culture group. There was no statistically significant difference in pregnancy rate, cell number and embryo quality between the two groups. The ongoing pregnancy rate per embryo transfer was 27% in co-culture and 30% in the conventional culture group. The implantation rates per transferred embryo were 17 and 18% respectively. Using a multivariate logistic regression model for the probability of ongoing pregnancies, the odds ratio of co-culture, adjusted for age and previous IVF attempts, was not statistically significant. In conclusion, co-culture with human fibroblasts does not contribute to an improvement of embryo quality nor to a higher pregnancy rate after IVF in an unselected group of patients.      

The UTX gene escapes X inactivation in mice and humans

We recently have identified a ubiquitously transcribed mouse Y chromosome gene, Uty , which encodes a tetratricopeptide repeat (TPR) protein. A peptide derived from the UTY protein confers H-Y antigenicity on male cells. Here we report the characterization of a widely transcribed X-linked homologue of Uty , called Utx , which maps to the proximal region of the mouse X chromosome and which detects a human X-linked homologue at Xp11.2. Given that Uty is ubiquitously transcribed, we assayed for Utx expression from the inactive X chromosome (Xi) in mice and found that Utx escapes X chromosome inactivation. Only Smcx and the pseudoautosomal Sts gene on the mouse X chromosome have been reported previously to escape inactivation. The human UTX gene was also found to be expressed from Xi. We discuss the significance of these data for our understanding of dosage compensation of X-Y homologous genes in humans and mice.