By I. Eusebio. University of Cincinnati.
Melatonin appears to be the signal by which the female domestic cat measures photoperiod diltiazem 60 mg with visa, with ovarian activity ceasing under decreasing photoperiod and resuming with increasing photoperiod (i buy cheap diltiazem 180mg online. Melatonin secretion is controlled by the prevailing photoperiod (as in other mammals) with concentrations being highest during the dark phase (Leyva et al. Exogenous melatonin administered intravenously or orally can suppress ovarian activity in domestic cats maintained under a variety of lighting regimens (Leyva and Stabenfeldt, 1989a, b; Graham et al. Females appear to exhibit a graded response to melatonin, with follicular suppression occuring more rapidly as the daily duration of melatonin elevation is increased (Leyva et al. Reproduction is at least somewhat seasonal in some non-domestic felids like the tiger (Seal et al. Like the domestic cat, photoperiod appears to control seasonal reproduction in non- domestic felids. For example, clouded leopards housed indoors with continuous exposure to 12 h of artifcial light per day will cycle year round (Brown et al. Pallas cats are highly seasonal and females exhibit ovarian activity for only ~3 months of the year (Jan-Mar) (Brown et al. However, sudden transitions to long days can stimulate premature follicular steroidogenesis. In one example, ovarian activity was stimulated in a Pallas cat female when she was moved to an outdoor exhibit and then again during a month-long event in november where zoo lights were left on for an additional 5 hours to facilitate night viewing by the public (Festival of Lights) (Brown et al. When the normal seasonal increase in photoperiod occurred, the female responded with an increase in fecal estrogen excretion, but no breeding occurred. Only after she was moved away from the festival lights the following year did conception occur (Brown et al. The gonadotropins ecG and hcG are typically used to stimulate follicular development and induce ovulation, respectively. Recent studies suggest that standard chorionic gonadotropin regimens induce ovarian hyperstimulation, resulting in estrogen concentrations that are several- fold higher than those observed during natural estrus (clouded leopard, Brown et al. The etiology of excessive estrogen production after gonadotropin treatment appears to be due, in part, to the development of ancillary ovarian follicles (Pelican et al. Hyper-estrogenism creates an abnormal endocrine environment that is detrimental to fertilization, embryogenesis and implantation. One exception is the cheetah, where fecal estrogen concentrations after gonadotropin ovulation induction are not different from those associated with natural estrus (Brown et al. In the domestic cat, pregnancy rates are highest when gonadotropins are administered during the interestrus period, when ovarian activity is minimal (Goodrowe and Wildt, 1987; Goodrowe et al. This inactivity could allow the ovary to be more consistently responsive to ecG/hcG because there are few active follicles and no luteal tissue producing endogenous steroids to disrupt exogenous gonadotropin action. Studies are now underway to identify approaches to temporarily shut-down ovarian activity before ovulation induction, which hopefully will result in more normal responses without hyperstimulation (Pelican et al. The diffculty is determining what constitutes stress because not all stressors have negative impacts. It is only a concern when stress causes deleterious effects (Moberg, 1987; Moberg and Mench, 2000). Indeed a lack of stimuli can lead to boredom, with equally detrimental consequences (Vanrooijen, 1991). Analyses of circulating or excreted corticosteroids can provide a physiological indicator of adrenal activity and overall levels of stress. For example, urinary cortisol was increased in domestic cats exposed to a stressful caretaking routine (carlstead et al. Appropriate assays need to be broad spectrum to crossreact with the variety of corticoid metabolites found in cat feces. R4866; University of california, Davis) also has proven effective in measuring fecal corticoids in other carnivore species, like the black-footed ferret (Young et al. However, the two assays detected different glucocorticoid metabolites within each species. Despite that, longitudinal profles were qualitatively similar and data were highly correlated, suggesting both systems were equally effective in monitoring adrenal activity. Thus, a number of options exist for monitoring stress status via adrenal steriods in felids. Studies now are in progress to use fecal corticoid analyses in combination with evaluations of behavior and physiology to provide more meaningful indicators of stress. Fecal corticoids have been shown to be transiently increased following anesthesia (domestic cat, Smith et al. In clouded leopards, comparisons across temperament categories indicated that nervous animals had higher corticoid concentrations than calm individuals (Wielebnowski et al. In another clouded leopard study, cats housed in enclosures with more vertical space or off exhibit had lower fecal corticoid levels, whereas higher corticoids were found in cats housed in close proximity to other large predators and in those displaying self-mutilating behaviors (Wielebnowski et al. Margay and tigrina females exhibited distinct elevations in corticoid concentrations after transfer from large enriched enclosures to smaller barren cages that corresponded with agitated behavior, especially soon after transfer. Fecal corticoid concentrations were then reduced following cage enrichment in tigrinas, but not in margays indicating a species difference in response to enrichment approaches.
Manometric assessment of esophageal motility in patients with primary Sjogrens syndrome cheap 60 mg diltiazem. Successful treatment of dry mouth and dry eye symptoms in Sjogrens syndrome patients with oral pilocarpine generic 180mg diltiazem with mastercard. The Clinicians Guide to the Diagnosis and Treatment of Salivary Gland Disorders and Chemosensory Disorders. Systemic omega-6 essential fatty acid treatment and pge1 tear content in Sjogrens syndrome patients. Relation between dietary n-3 and n-6 fatty acids and clinically diagnosed dry eye syndrome in women. The Effect of an Omega-3 supplement on Dry Mouth and Dry Eyes in Sjogrens Patients. Correlations between nutrient intake and the polar lipid profiles of meibomian gland secretions in women with Sjogrens syndrome. A new approach to managing oral manifestations of Sjogrens syndrome and skin manifestations of lupus. Inhibition of autoantigen expression by (-)-epigallocatechin-3-gallate (the major constituent of green tea) in normal human cells. Fathalla and Donald Goldsmith Summary The juvenile idiopathic arthritides are a group of heterogeneous disorders characterized by chronic arthritis with frequent extra-articular manifestations. Key Words: Growth delay; juvenile chronic arthritis; juvenile idiopathic arthritis; juvenile rheumatoid arthritis; nutritional impairment 1. Each arthritis subtype has a distinct constellation of clinical manifestations and laboratory features. Chronic arthritis is the most common pediatric rheumatic disease and represents one of the most frequent causes of chronic illness and disability in children. Its clinical spectrum is variable and ranges between arthritis affecting a single joint to a severe systemic inflammatory disease involving multiple joints. Although the etiology of the various types of chronic arthritis in children largely remains unknown, recent advances in the basic understanding of the inflammatory response has led to several breakthroughs in the treatment and management of this group of disorders (1,2). Assessment of nutritional status is a pivotal part of each patients evaluation (2). In this chapter we present an overview of the subtypes of the chronic arthritides in children From: Nutrition and Health: Nutrition and Rheumatic Disease Edited by: L. He included a section on stiffenes of the limmes a condition that he attributed to exposure to the cold (35). Aside from acute rheumatic fever, previously known as acute rheumatism, only a few case reports of chronic arthritis in children were described before the year 1900. Two reports of a relatively large number of patients with chronic arthritis were published at the end of 19th century; the first, in 1891 authored by Diamant-Berger, a French physician and the second in 1897 by George Fredric Still. The latter is considered by many to be a landmark publication in the history of pediatric rheumatology (37). Both reports emphasized that chronic arthritis in children was different from adults and that it included several subtypes, perhaps suggesting that various disorders could be operative. Only a few but important benchmark events took place during the first half of the 20th century. The association between Group A hemolytic streptococcal and acute rheumatic fever was established in 1930 (8). The synthesis of cortisone paved the way for the use of corticosteroids in treating several rheumatic conditions including chronic arthritis (3,9). In 1910, Ohm described a child with arthritis who developed chronic iridocyclitis (3,5). As more cases of children with chronic arthritis were identified, several published reports appeared during the early decades of the 20th century. It soon became apparent that the wide spectrum of the presentation of chronic arthritis of children implied that the disorder was quite heterogeneous. This led to a divergence in nomenclature between reports coming out of Europe versus reports from North America. Accordingly, most of the reported case series and studies done before 1993 have used either of these two terms. It is important to note that the primary purpose for establishing uniform classification criteria is to delineate a relatively homogenous group of patients, which will facilitate accurate collection of clinical data between research centers. However, in clinical practice, these classification criteria often provide the framework for a proper diagnosis. The following is a brief review of the main features of each classification system.
It is unclear whether this Nonsurgical therapies are also prominent in the drop refects an actual trend purchase diltiazem 60 mg line, potentially attributable treatment of women with stress urinary incontinence discount diltiazem 180mg fast delivery. The annual The primary modality used is pelvic muscle rate of hospitalizations was higher for women 45 to 84 84 85 Urologic Diseases in America Urinary Incontinence in Women Table 10. The rate common in women residing in the South and West of inpatient stays for urinary incontinence for older and least common in women living in the Northeast. Most 65 and 74 more likely than the other age groups of the hospitalizations for urinary incontinence were to be hospitalized. This is most likely due to the fact that Waetjen insurance, the rate of inpatient hospitalizations for included inpatient stays in which the primary incontinence procedures (primary or any procedure) diagnosis was gynecological (such as pelvis organ ranged from 123 per 100,000 women in 1994 to 114 per prolapse) and in whom an incontinence procedure 100,000 in 2000 (Table 12). Most of these procedures was done in concert with other procedures to repair were performed in conjunction with other surgical the primary gynecological problem. National inpatient hospital stays by females with urinary incontinence listed as primary diagnosis, by age and year. Trends in mean inpatient length of stay (days) for adult females hospitalized with urinary incontinence to 33 per 100,000 in 2000. These data suggest a trend listed as primary diagnosis toward decreasing numbers of inpatient surgeries for Length of Stay incontinence; if this trend is substantiated in future 1994 1996 1998 2000 years, it may refect either the increased emphasis on All 3. Despite an increase in cesarean deliveries and complex laparoscopic pelvic surgeries (two major sources of urogenital fstulae) during the time frame studied, national hospitalization data showed no increase in hospitalizations for urinary incontinence 88 89 Urologic Diseases in America Urinary Incontinence in Women Table 14. However, this hospitalizations for incontinence due to fstulae are illustrates the diffculty in comparing rates across data estimated to occur each year nationwide, suggesting sets. Table 3 shows that 38% of elderly women report that further attention should be paid to prevention. While increased from 15 per 100,000 in 1994 to 34 per 100,000 the reason for this increase is unknown, at least two in 2000 (Table 18). Older women also had more anticholinergic medications for urge incontinence ambulatory surgical visits; the rate of such visits were approved during the late 1990s. The releases by women 65 and older enrolled in Medicare in of the frst new medications for incontinence in 1998 was 142 per 100,000 (Table 19). The increased several decades were accompanied by major direct- rate of ambulatory surgery is probably due to the 90 91 Urologic Diseases in America Urinary Incontinence in Women Table 17. Rate of surgical procedures used to treat urinary incontinence among female Medicare benefciaries. Collagen nursing home is two times greater for incontinent for this purpose was not available in 1992, but by women (21). When queries about Administration) within 14 days of nursing home bladder function are expanded to include assistance admission is mandated (18). Medical expenditures for urinary incontinence Urinary incontinence is regarded as an important among female Medicare benefciaries (65 years of age risk factor for nursing home admission. Research and older) nearly doubled between 1992 and 1998 has indicated that a signifcant proportion of those from $128. This change in venue probably borne by patients themselves as part of routine care refects the general shift of surgical procedures to (22) (Table 25). Expenditures for female Medicare benefciaries age 65 and over for treatment of urinary incontinence (in millions of $), (% of total) Year 1992 1995 1998 Total 128. Expenditures for female urinary incontinence and share of costs, by type of service (in millions of $) Year 1994 1996 1998 2000 Totala 324. Average drug spending for incontinence-related conditions (both male and female) is estimated at $82 million to $102 million annually for the period 1996 to 1998. Expenditures for female Medicare beneficiaries age 65 and over for the treatment of urinary incontinence (in millions of $). Visits during The indirect costs for urinary incontinence are which patients return for follow-up after treatment estimated by measurements of work lost (Tables 28 are also often coded as visits for incontinence, even and 29). While providers can 23% of women missed work, while only 8% of men be urged to code more diligently, administrative did so. Average annual work absence for women databases alone will never yield the degree of clinical totaled 28. Although women of urinary incontinence and its impact on women and men had similar numbers of outpatient visits for in the United States. Classifcation and Coding Despite these limitations, administrative databases Existing databases allow researchers to describe do allow investigators to paint broad-brush pictures trends in incontinence surgery and hospitalization of the overall picture of urinary incontinence in more accurately than trends in outpatient visits or American women. Costs of urinary incontinence in 1995 (in Given the large number of women affected by millions of $) urinary incontinence, future studies focusing on both Cost Factor prevention and treatment are vital. Longitudinal Diagnostic costs a studies are needed to delineate the risk factors Community 380.
Studies nanoparticles and are able to form a revealed that Balb/c mice injected intravenously multilayered complex of molecules around or intraperitoneally with apatite-coated magne- nanoparticles 180 mg diltiazem sale. Physicochemical properties of tite nanoparticles in doses ranging from 100 to magnetite dictate the binding pattern of the bio- 2 diltiazem 180mg amex,500 mg/kg showed normal kidney and liver molecules and affect the interaction with various function. The transport of most of the contrast ence, it is essential to evaluate mutagenicity and agents is by intravenous administration, and suc- genotoxicity potential using short-term and cessful delivery depends on the size of the long-term experimental models. Salmonella typhi- particle that has to pass through the vascular murium strains were cultivated in the presence of capillary wall. Depending on their size, charge, magnetite nanoparticles at concentration ranging and the configuration of the coating (Stella et al. In a rat model after the delivery time and the diffusion to certain tis- iron oxide nanoparticles exposure, the results sues (Hofmann-Amtenbrink et al. Recent results specific and efficient, and they should be rapidly revealed that iron oxide nanoparticles may internalized by the target cells. These characteris- induce inflammatory responses via oxidative tics are limited by several factors: (i) nanoparticle stress in the lungs and also may lead to the for- aggregation; (ii) the short half-life of the nanopar- mation of microgranuloma (Park et al. All ticles in blood circulation (when nanoparticles these data show that the behavior of magnetite agglomerate, or adsorb plasma proteins, they are nanoparticles is influenced by the type of cells. The magnetite nanoparticles should be of nanoparticles; and (iv) nonspecific targeting. For this reason, extensive safety assess- of antibiotic magnetic dextran microspheres complexes ment of these particles must be performed to sat- against Staphylococcus aures and Pseudomonas aeruginosa isfy not only the regulators but also the patient. Hybrid nano-structured In recent years, the number of types of mag- coating for increased resistance of prosthetic devices to netite nanoparticles has increased very rapidly. Efficient surface functionali- zation of wound dressings by a phytoactive nanocoat- ing refractory to Candida albicans biofilm development. Biocompatibility of Fe3O4 nanopar- CoFe2O4/oleic acidcore/shell on clinical isolates of ticles evaluated by in vitro cytotoxicity assays using nor- bacterial and fungal strains. Magnetic chitosan terization and in vitro profile based interaction with for drug targeting and in vitro drug delivery response. The anti- Fe3O4/cephalosporins hybrid materials for targeted bacterial activity of magnetic nanofluid: Fe O /oleic acid/3 4 drug delivery. Fe3O4@C18-carvone to Orthogonal optimization design for preparation of prevent Candida tropicalis biofilm development. Biocompatible magnetite nanoparticles with pathogens: communicating current research and techno- varying silica-coating layer for use in biomedicine: logical advances. Effects of iron oxide nanoparticles on pulmo- system for stabilizing essential oils in biomedical appli- nary morphology, redox system, production of immu- cations. This growing body trated on a wide variety of diseases, but they of evidence has raised serious concerns about a are mostly divided into antimicrobial and anti- future where modern medicine has to make do cancer treatments. The ultimate outcome of this how these fullerenes are modified and adapted situation has been widely speculated. Antibiotic resistance is one of the most There have been several calls for research challenging issues facing modern medicine into newer types of antibiotics to combat these to date. There have been numerous efforts infections, but this effort still requires signifi- to counter the adaption of bacteria to antibio- cant investments because pharmaceutical com- tics, such as education of the public and panies remain rather reluctant to continue of health care personnel regarding the investigation into new forms of antibiotics. To importance of finishing courses of antibio- many companies, the field appears to be one of tics, as well as thorough and frequent cleans- diminishing returns based on cost and timing ing of surfaces and surgical equipment; alone. Additionally, light source, which results in it being converted though certain species of the microbes may to an excited state. Of course, although this does reaches a long-lived excited triplet state with not rule out that resistance may be possible, it which oxygen (under standard conditions, a does bode well for the treatment as a possible replacement for antibiotics in the future. Similarly, encouraging results method of cleansing viruses from blood has were found by Garcez et al. Methylene blue where 90% of the bacteria were killed with a is also nontoxic in the blood, so this method standard endodontic treatment, 95% were of filtration is highly recommended. This point appears to vindicate the ear- tests cannot accurately determine if infection lier concerns of Siddigui et al. This infec- to combat acne (among other conditions) has tion was treated with polylysine (pL)ce6 con- proven popular. This wavelength, too, should ideally be ing the fullerene to penetrate the cell, in a comparatively long (between 700 and 850 nm) method referred to as self-promoted uptake. Although unmodified fullerenes show low toxicity, according to Aschberger et al. Although there for preventing photo damage to healthy cells, has not yet been a case of a reported resistance even when applied topically. In the case variation of drug delivery systems to ensure of cancers and microbial infections, which can increased drug uptake into the infectious have different pH conditions, this can result organism.