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PubMedDate not supplied

[The effect of total extirpation of the neocortex on reflex activity in rats].

Using motor-feeding methods, studies have been made of the effect of complete extirpation of the neocortex on formation of new or recovery of pre-formed differentiation of localization of sources of light of identical intensity. It was shown that decortication results in significant and mostly irreversible disturbances of unconditioned reflex activity. In decorticated rats, only the simplest forms of conditioned motor reaction were noted which exhibit dominant features. Conditioned reflex to illumination combined with feeding is not recovered and is not formed a new in its biologically perfect form.

Animals↗

PubMed2005

Paraventricular hypothalamic CB(1) cannabinoid receptors are involved in the feeding stimulatory effects of Delta(9)-tetrahydrocannabinol.

BACKGROUND/AIMS: The paraventricular nucleus of the hypothalamus (PVN) is the target of converging orexigenic and anorexigenic pathways originating from various hypothalamic sites and is, therefore, considered to be the chief site mediating hypothalamic regulation of energy homeostasis. Although a large body of evidence suggests that central CB(1) cannabinoid receptors mediate food intake, it is not clear whether PVN CB(1) receptors are involved in the control of feeding behaviour. The present study therefore examined the effects of intra-PVN administration of Delta(9)-tetrahydrocannabinol (THC) and the cannabinoid receptor antagonist SR 141716 on feeding. METHODS: After being habituated to the test environment and injection procedure, sated rats were injected with SR 141716 (0.03-3.0 microg, Experiment 1) alone or in combination with THC (5.0 microg, Experiment 2) into the PVN. Food intake and locomotor activity then were recorded for 120 min. RESULTS: Intra-PVN administration of THC produced a significant increase in food intake that was attenuated by SR 141716. Administration of SR 141716 alone did not affect feeding. Locomotor activity was not significantly affected by any drug treatments, suggesting that effects on feeding were not due to a non-specific reduction in motivated behaviour. These findings suggest an important role for PVN cannabinoid signalling in mediating THC-induced feeding behaviour. These results also demonstrate that the blockade of PVN CB(1) receptors alone is insufficient to reduce baseline feeding behaviour under these conditions.

Animals↗

PubMedDate not supplied

Infant and mother sleep patterns during 4th postpartum week.

Using modified Barnard and Eyres (1979) Sleep/Activity Records, 44 mothers recorded diurnal sleep and awake times for themselves and their infants during the 4th week postpartum. Independent two-way analyses of variance, using a two-factor design (3a x 2b), compared data from each mother and each infant. Independent variables were (a) parity groups (mothers feeding their first, second, or third infant) and (b) feeding method (breast vs. bottle). A statistically significant difference (alpha = .05) was apparent between breast-fed and bottle-fed babies regarding the number of awakenings and the hours of night sleep, with breast-fed babies awakening more and sleeping less at night. But there was no statistically significant difference in the hours of total sleep diurnally. Mothers exhibited corresponding differences in sleep patterns, with a statistically significant increase in night waking for breast-feeding mothers. Infants in this study averaged 14.6 hr of sleep in 24 hr, which is in contrast to the 15.5 to 17.3 hr of sleep commonly reported in nursing texts based on studies from the 1960s.

Adult↗

PubMed1993

A controlled trial of bismuth subsalicylate in infants with acute watery diarrheal disease.

BACKGROUND: Bismuth subsalicylate is a common constituent of over-the-counter medications for diarrhea. However, it is uncertain whether bismuth offers any more benefit than standard oral rehydration therapy with early feeding. METHODS: We conducted a placebo-controlled, randomized trial to evaluate the effect of bismuth subsalicylate (100 or 150 mg per kilogram of body weight per day for up to 5 days) on the duration and volume of acute watery diarrhea in 275 male infants and young boys (mean age, 13.5 months). Serum salicylate and bismuth levels were monitored throughout the study and were also measured two weeks after discharge. All the patients received fluid replacement by the oral route and early feeding of easily digestible foods with high caloric density. RESULTS: Diarrhea stopped within 120 hours of admission in 74 percent of the patients given placebo, 89 percent of those given 100 mg of bismuth per kilogram (P = 0.009 vs. the placebo group), and 88 percent of those given 150 mg of bismuth per kilogram (P = 0.019 vs. the placebo group). As compared with the patients given placebo, those given bismuth had significant reductions in their total stool output (P = 0.015), total intake of oral rehydration solution (P = 0.013), and duration of hospitalization (P = 0.005); there was no significant difference between the two groups given bismuth in these clinical outcomes. All measurements of bismuth and salicylate concentrations in blood were well below concentrations considered toxic. No adverse reactions were seen. CONCLUSIONS: Treatment with bismuth subsalicylate decreases the duration of diarrhea and is a safe and effective adjunct to oral rehydration therapy for infants and young children with acute watery diarrhea.

Acute Disease↗

PubMedDate not supplied

Examination of the effect of Dr. Brown's Natural Flow Baby Bottles on infant colic.

Thirty-six parents of colicky infants participated in this randomized, placebo-controlled clinical trial conducted via the Internet. Parents recorded a baseline state-of-arousal diary for 3 days using their usual feeding methods, and then they used six study-provided bottles for 2 weeks while recording a second state-of-arousal diary. Infants being fed with placebo bottles significantly spent more time crying (rho=.010) and fussing (rho=.002) on average than infants using Dr. Brown's Natural Flow Baby Bottles. Because these bottles decreased the time the infants spent crying and fussing, use of these bottles may be recommended for colicky infants who receive any bottle feedings.

Air↗

PubMed2003

[Overwintering and size dynamic characters of Apis cerana cerana].

A systematic observation and research was conducted on the overwintering and size dynamic characters of Apis cerana cerana at south and west mountaneous area of Anhui Province in 1998-2003. The results showed that the center temperature of overwintering bee flock changed synchronously with the outside temperature. With the decrease of overwintering bee colony, its center temperature and relative humidity ranged widely, and stably descended. Overwintering flocks fed by old method had a high stability than that fed new one. Among overwintering bee bred in Autumn, the glands of work bee were in initial stage, the descending rate of colony was low, the bee colony kept in quiet, the forage consumption was small, and the colony kept in high stability. Cutting off offspring by imprisonment improved the quantity and quality of right age overwintering bee, and the age structure of each bee population was variable. Under new feeding method of Apis cerana cerana seasonal management, the skill of breeding right age overwintering bee flock and the cutting off offspring by imprisonment should be undertaken.

Animals↗

PubMed2004

Frequency of infant adverse events that are associated with citalopram use during breast-feeding.

OBJECTIVE: The purpose of this study was to determine the frequency of infantile adverse events from exposure through breast-feeding to maternal citalopram therapy. STUDY DESIGN: This was a prospective, observational cohort study. Women who were breast-feeding were placed in three groups on the basis of citalopram use: group 1 consisted of 31 women who were depressed and were undergoing citalopram therapy, group 2 consisted of 12 women who were depressed but were not undergoing citalopram therapy, and group 3 consisted of 31 healthy women who were matched to group 1 by maternal age and parity. Data collection included infant feeding method, medication use, and adverse events. RESULTS: There was no statistically significant difference in the rate of adverse events in the three groups (3/31 events, 0/12 events, and 1/31 events in groups 1, 2, and 3, respectively). The average dose of citalopram that was used in group 1 was 25.3+/-11.4 mg per day (range, 10-60 mg/d). CONCLUSION: To our knowledge, this is the first prospective, controlled study to examine the safety of citalopram during breast-feeding, which should be continued during maternal citalopram therapy.

Adult↗

PubMed1999

The breast or the bottle? Determinants of infant feeding behaviors.

Although various trends have placed breastfeeding in and out of vogue, in the twentieth century the greater availability of human milk substitutes mandates that a woman choose her infant's feeding method. It appears that intrapsychic factors or life experiences, as well as certain social conditions, influence that choice. For example, the economic state of society historically has had significant impact on the role of women and the value placed on woman's unique biologic contributions. Likewise, personality and attitudinal factors also may act as potential mediators of observed differences between lactating and nonlactating mothers in their mother-infant interactions. Finally, once the decision to breastfeed or bottle-feed has been made and carried through, additional physiologic mechanisms may mediate conscious behavioral intentions. The phenomenon of human lactation, then, is sensitive to a variety of interrelated factors that can be grouped as follows: (1) individual personality, (2) social forces, and (3) psychophysiologic mechanisms. An in-depth understanding of the specific factors that affect a woman's decision to breastfeed will have far-reaching implications for future educational and interventional programs.

Attitude↗

PubMed2004

Length of stay after vaginal birth: sociodemographic and readiness-for-discharge factors.

BACKGROUND: The impact of reductions in postpartum length of stay have been widely reported, but factors influencing length of hospital stay after vaginal birth have received less attention. The study purpose was to compare the sociodemographic characteristics and readiness for discharge of new mothers and their newborns at 3 discharge time intervals, and to determine which variables were associated with postpartum length of stay. METHODS: The study sample comprised 1,192 mothers who were discharged within 2 postpartum days after uncomplicated vaginal birth at a tertiary perinatal center in the midwestern United States. The sample was divided into 3 postpartum length-of-stay groups: group 1 (18-30 hr), group 2 (31-42 hr), and group 3 (43-54 hr). Sociodemographic and readiness-for-discharge data were collected by self-report and from a computerized hospital information system. Measures of readiness for discharge included perceived readiness (single item and Readiness for Discharge After Birth Scale), documented maternal and neonatal clinical problems, and feeding method. RESULTS: Compared with other groups, the longest length-of-stay group was older; of higher socioeconomic status and education; and with more primiparous, breastfeeding, white, married mothers who were living with the baby's father, had adequate home help, and had a private payor source. This group also reported greater readiness for discharge, but their newborns had more documented clinical problems during the postbirth hospitalization. In logistic regression modeling, earlier discharge was associated with young age, multiparity, public payor source, low socioeconomic status, lack of readiness for discharge, bottle-feeding, and absence of a neonatal clinical problem. CONCLUSIONS: Sociodemographic characteristics and readiness for discharge (clinical and perceived) were associated with length of postpartum hospital stay. Length of stay is an outcome of a complex interface between patient, provider, and payor influences on discharge timing that requires additional study. Including perceived readiness for discharge in clinical discharge criteria will add an important dimension to assessment of readiness for discharge after birth.

Adult↗

PubMed1998

Breast-feeding during treatment with cyclosporine.

BACKGROUND: Mothers treated with cyclosporine (CsA) have previously not been allowed to breast-feed due to the reported accumulation of the drug in breast milk. The purpose of this study was to evaluate the consequences of allowing breast-feeding. METHODS: Seven infants were breast-fed by mothers who had undergone kidney transplantation alone (n=5) or simultaneous kidney and pancreas transplants (n=2). In addition to CsA, all mothers received prednisolone at 5-7.5 mg/day and six mothers received azathioprine at 50-100 mg. CsA concentration was measured in the whole blood of mothers and babies and in breast milk. Serum creatinine was measured in babies 1 week after birth and after 4-12 months of breast-feeding. RESULTS: Blood CsA levels ranged from 55 to 130 ng/ml in mothers (12-hr trough), 50 to 227 ng/ml in breast milk (mean for each woman), and was below the detection limit of 30 ng/ml in all infants. Breast milk concentration ranged from 87 to 440 ng/ml in 16 samples obtained at various time points from one mother. Infants' serum creatinine ranged from 25 to 54 micromol/L at 1 week after birth and 23-52 micromol/L after breast-feeding. All babies thrived. CONCLUSIONS: Breast-fed infants of mothers treated with CsA received less than 300 microg per day of CsA and absorbed undetectable amounts. There were no demonstrable nephrotoxic effects or other side effects. Thus, women with kidney transplants could be allowed to breast-feed.

Adult↗

PubMedDate not supplied

Translation and validation of the Breastfeeding Self-Efficacy Scale into Chinese.

The purpose of this methodological study was to translate the Breastfeeding Self-Efficacy Scale (BSES) into Mandarin and determine the psychometric characteristics among a sample of 186 Chinese women. The BSES was translated and pilot-tested with 21 breastfeeding women. Following minor revisions to ensure content and semantic equivalence, the instrument was administered to 186 hospitalized breastfeeding women, who were then contacted again at 4 and 8 weeks postpartum to determine their infant feeding method and readminister the Edinburgh Postnatal Depression Scale. The psychometric assessment method used to validate the original BSES (English version) was replicated with the translated Chinese version. The Cronbach's alpha coefficient for the Chinese version BSES was 0.93, suggesting good reliability. Consistent with the English version, the factor analysis procedures resulted in the theorized two-factor solution and as hypothesized, the BSES was significantly correlated with the Edinburgh Postnatal Depression Scale, a theoretically related construct. Support for predictive validity was demonstrated through significant mean differences in BSES scores between breastfeeding and bottle-feeding mothers at 4 and 8 weeks postpartum. The results from this study are the first to examine the psychometric characteristics of the Chinese version BSES administered in a hospital postnatally and provide further evidence of the reliability and validity of the instrument.

Adult↗

PubMed2002

Ethical issues in the feeding of patients suffering from dementia: a focus group study of hospital staff responses to conflicting principles.

Feeding difficulties in older patients who are suffering from dementia present problems with balancing conflicting ethical principles. They have been considered by several writers in recent years, and the views of nursing and care staff have been studied in different contexts. The present study used focus groups to explore the way in which nursing and care staff in a National Health Service trust deal with conflict between ethical principles in this area. Three focus groups were convened, one each from the staff of three wards caring for patients with dementia. Case histories were discussed and transcripts analysed. It emerged that staff were aware of making fine judgements of utility concerning the spectrum of feeding methods available. Informants gave some weight to the principle of autonomy, but sought to balance that against their commitment to care. In explaining their perspectives, informants gave more weight to personal attitudes and trust culture than to professional ethics

Attitude of Health Personnel↗

PubMed2004

The impact of monosymptomatic nocturnal enuresis on attachment parameters.

OBJECTIVE: This study assesses the impact of monosymptomatic nocturnal enuresis (MSNE) on the child's perception of quality of attachment to a caregiver and the caregiver's perception of dissociative behavior. MATERIAL AND METHODS: The study group comprised 47 boys and 63 girls (mean age 11.7 years; range 9-18 years). Subjects were classified into two groups as follows: Group I (normal children without nocturnal enuresis); or Group II (children with MSNE). MSNE was defined as more than three wet episodes per week without day-time enuresis, urge incontinence, frequency or dysuria. The Adolescent Attachment Questionnaire (AAQ) was administered to the children and the Child Dissociative Checklist (CDC) to the caregiver. Comparison groups were divided by gender, feeding method and type of caregiver. The AAQ and CDC scores in each subgroup were compared between the enuretic and non-enuretic groups. RESULTS: Mean scores for attachment pathology were significantly higher in the enuretic (n = 50) than the non-enuretic group (n = 60) (p < 0.05). The most significant attachment pathology was evident for the AAQ Angry Distress dimension in the nocturnally enuretic group. Caregivers' CDC scores did not differ significantly between the two groups. Highest mean dissociation scores were evident for those children whose caregiver was not a biologic parent or grandparent. CONCLUSIONS: MSNE may negatively impact the child's perception of the quality of attachment. Caregivers reported no significant dissociative behavior in nocturnally enuretic children. With prolonged nocturnal enuresis, physicians should be aware of the possibility of anger and distress within the child-caregiver relationship. In such cases, the modified treatment protocol should include psychologic counseling and support.

Adolescent↗

PubMed1985

Effect of non-nutritive and nutritive suck on gastric emptying in premature infants.

Ten healthy preterm infants were studied to determine if non-nutritive and nutritive suck significantly altered gastric emptying patterns when compared with gavage feeding alone. We used a 10% dextrose meal with phenol red marker and a double sampling technique to determine gastric emptying at 10-min intervals over a 30-min test period. A crossover study design compared the effects of the three feeding methods in each infant. The gastric residual volumes expressed in milliliters per kilogram did not differ significantly when comparisons were made among groups at 10, 20, and 30 min following the test meal. Non-nutritive suck and nutritive suck and swallow of a liquid dextrose meal do not significantly improve gastric emptying in healthy preterm infants. The beneficial effects of non-nutritive and nutritive sucking on the nutritional status of preterm infants, demonstrated by others, are not related to improved gastric evacuation of feeds. Alternative explanations for these beneficial effects require further investigation.

Gastric Emptying↗

PubMed1983

Nutrition in the first year of life in a multi-ethnic poor socio-economic municipality in Melbourne.

In a longitudinal epidemiological study of 304 consecutively born infants in a poor socio-economic multi-ethnic municipality (Brunswick) nutrition was suboptimal in approximately 50%. This was mainly due to a high failure rate in establishing effective lactation in the 82% of mothers who commenced breast feeding, but also to the early and frequent feeding of solids, usually refined carbohydrates, and minimal use of fresh fruit and vegetables. The low rate of breast feeding to 6 months in Brunswick (16% compared with the State of Victoria average of 27%) was associated with demographic changes due to immigration. Of the 304 mothers, 62% were born overseas, most had limited schooling, no working skills, and 50% were unable to speak English. Successful breast feeding was positively correlated with better education and working skills while early introduction of solids and canned food was negatively correlated. Professional advice and influence in infant feeding was very limited as most mothers decided their feeding methods on their own preferences or their experience with other children, or on advice from their own mothers or relatives. These findings indicate that it will be a slow and complex task to change attitudes and teach poorly educated mothers, especially immigrants with limited English, the importance of optimum nutrition.

Australia↗

PubMed2000

Chronic metabolic acidosis increases NaDC-1 mRNA and protein abundance in rat kidney.

BACKGROUND: Chronic metabolic acidosis increases, while alkali feeding inhibits, proximal tubule citrate absorption. The activity of the apical membrane Na+/citrate cotransporter is increased in metabolic acidosis, but is not altered by alkali feeding. METHODS: Renal cortical mRNA and brush border membrane protein abundances of sodium/dicarboxylate-1 (NaDC-1), the apical membrane Na+/citrate transporter, were measured. RESULTS: By immunohistochemistry, NaDC-1 was localized to the apical membrane of the proximal tubule. Chronic metabolic acidosis caused an increase in NaDC-1 protein abundance that was maximal in the S2 segment and that increased with time. Metabolic acidosis also increased NaDC-1 mRNA abundance, but this was first seen at three hours and correlated with the severity of the metabolic acidosis. Alkali feeding had no effect on NaDC-1 protein or mRNA abundance. CONCLUSIONS: Chronic metabolic acidosis increases renal cortical NaDC-1 mRNA abundance and apical membrane NaDC-1 protein abundance, while alkali feeding is without effect on NaDC-1.

Acidosis↗

PubMed1995

Effects of dietary protein on the induction of DNA synthesis and expression of growth-related genes in liver and kidney of growing rats.

To investigate molecular mechanisms of growth control by protein nutrition, we examined whether nutritive quality of protein affects the induction of DNA synthesis in liver and kidney of growing rats in relation to expression of growth-related genes such as c-myc, c-fos, c-Ha-ras, and ornithine decarboxylase (ODC). Rats were adapted to 2-h meal feeding schedule at first with laboratory chow for 10 days and then with a protein-free diet for 3 days prior to experiments. When protein-free diet was fed to the rats, the levels of c-myc, ODC and c-Ha-ras mRNAs increased in the liver within 2 days. However, substantial changes in the levels of those mRNAs were not observed in the kidney. The level of c-fos mRNA in these tissues was too low to detect by our method. Feeding of casein diet to rats that had been maintained on protein-free diet for 3 days caused a rapid decrease in the level of c-myc mRNA and induced DNA synthesis in the liver. On the other hand, zein diet, which lacks tryptophan and lysine, did not lower the c-myc mRNA level nor induced DNA synthesis in the liver. However, if zein diet was supplemented with tryptophan and lysine, a decrease in c-myc mRNA level and an induction of DNA synthesis were observed. The levels of ODC and c-Ha-ras mRNAs were not changed by feeding of casein or zein diet. Neither casein nor zein induced DNA synthesis and changed the levels of the mRNA in the kidney. The amount of food intake during the 2-h feeding period was not different among the diets. These results suggest that the liver cells are arrested in G1 phase during the feeding of protein-free diet and good quality of protein is required to progress the cell cycle to enter S phase.

Animals↗

PubMed1991

[Variations in reproductive capacity, gonotrophic cycle and longevity of Anopheles sinensis infected by Brugia malayi larvae].

Under the experimental conditions of 26 +/- 10 degrees C, relative humidity 70-80%, 100 +/- 20 Lux and photoperiod 16 hours/day and using a membrane feeding method, the development of filarial larvae and the variations in reproductive capacity, gonotrophic cycle and longevity of An. sinensis infected with microfilariae of Brugia malayi were observed. The infection rate and infection intensity of filarial larvae in An. sinensis increased with the microfilarial density in the blood meal from 50 to 150 mf/20 microliters. The mature rate and IEI decreased when the density rose to 200 mg/20 microliters. The concentration ratio of mf in blood by An. sinensis was 1.2-1.4. In the 3rd gonotrophic cycle, the feeding ratio of infected mosquitoes became lower when the mf density rose to 150 mf/20 microliters, but the infection of filarial did not affect the number of oviposition, the regularity of egg-production activity and the hatching rate of eggs, while the quantity of egg-production increased when the mf density was 150 mf/20 microliters. The egg-production rate, and gonotrophic cycle were not basically influenced by filarial larvae infection. The multifeeding ratio was 16.7-48.4% in An. sinensis. The longevity of An. sinensis was extended by infection with mf density of 100 mf/20 microliters and shortened in infection with mf density of 200 mf/20 microliters. The authors conclude that "Brugia malayi-Anopheles sinensis" is a highly adapted "pathogen-vector" system.

Animals↗