The protein nutritive value of anchovy, mackerel and canned sardine samples together with casein as a reference formulation were evaluated. Proximate composition, protein quality and protein digestibility were determined. Procedures for evaluation included Protein Efficiency Ratio (PER) using the rat bioassay and in vivo Apparent Digestibility (AD). Rats fed with canned sardine diet had the highest mean body weight (154.8±12.28g) while rats fed with anchovy diet had the lowest mean body weight (145.27±15.89g) with significant differences between all the groups. Mean body weight of rats fed with selected fish diet was higher compared to rats fed with casein diet. For PER value, canned sardine has the highest value (2.48), followed by anchovy (2.46) and mackerel (2.34). PER value for all selected fish is lower than that for casein (3.14). Mackerel had the highest value of in vivo AD (96.99%), followed by casein (96.96%), canned sardine (96.88%) and anchovy (91.29%). In conclusion, among the types of fish compared, sardine had the highest protein quality while mackerel showed the highest digestibility.
Proteins ; Diet ; Caseins ; Protein measurement ; Rattus norvegicus

BACKGROUND: About 70-80% of children with cow's milk allergy (CMA) become outgrown clinically by the age of 3 years. Casein, one of the three major cow's milk proteins (casein, beta-lactoglobulin (BLG), alpha-lactoalbumin (ALA) ) has been reported to play an important role in the persistence of CMA. The aim of this study was to determine different effects of causative milk proteins on the persistence of CMA between two age groups. METHODS: A total of 65 patients with CMA were enrolled in this study. Their cow's milk-specific IgEs were positive ( 0.7 U/ml by Pharmacia CAP). After dividing 65 patients into two age groups, under the age of 3 years and over 3 years (persistent CMA), we compared the levels of casein-, BLG- and ALA-specific IgE antibodies between the two groups. RESULTS: There were 44 patients in the group of less than 3 years of age and 21 patients in the group of more than 3 years of age. The concentrations of the specific IgE antibodies to casein, BLG and ALA were not significantly different between the two groups. However, although statistically insignificant, those more than 3 years of age had higher mean values of casein-specific IgE antibodies and lower mean values of whey protein (BLG and ALA) - specific IgE antibodies compared with those less than 3 years of age. A single dominant allergenic milk protein was not identified within either of the two age groups, but the con centrations of the casein-specific IgE antibodies in children with more than 3 years of age tended to be higher than those of whey protein-specific IgE antibodies. CONCLUSION: Although statistically insignificant, the concentrations of the casein-specific IgE antibodies were higher in the group of more than 3 years of age than in the younger group. Moreover, the concentrations of the casein-specific IgE antibodies in children more than 3 years of age tended to be higher than those of whey proteins. These findings implicate that casein plays a certain role in the persistence of CMA.
Antibodies ; Caseins ; Child* ; Humans ; Immunoglobulin E* ; Lactoglobulins ; Milk Hypersensitivity* ; Milk Proteins ; Milk* ; Whey Proteins

BACKGROUNDEnamel decalcification in orthodontics is a concern for dentists and methods to remineralize these lesions are the focus of intense research. The aim of this study was to evaluate the remineralizing effect of casein phosphopeptide amorphous calcium phosphate (CPP-ACP) nanocomplexes on enamel decalcification in orthodontics.

METHODSTwenty orthodontic patients with decalcified enamel lesions during fixed orthodontic therapy were recruited to this study as test group and twenty orthodontic patients with the similar condition as control group. GC Tooth Mousse, the main component of which is CPP-ACP, was used by each patient of test group every night after tooth-brushing for six months. For control group, each patient was asked to brush teeth with toothpaste containing 1100 parts per million (ppm) of fluoride twice a day. Standardized intraoral images were taken for all patients and the extent of enamel decalcification was evaluated before and after treatment over this study period. Measurements were statistically compared by t test.

RESULTSAfter using CPP-ACP for six months, the enamel decalcification index (EDI) of all patients had decreased; the mean EDI before using CPP-ACP was 0.191 ± 0.025 and that after using CPP-ACP was 0.183 ± 0.023, the difference was significant (t = 5.169, P < 0.01). For control group, the mean EDI before treatment was 0.188 ± 0.037 and that after treatment was 0.187 ± 0.046, the difference was not significant (t = 1.711, P > 0.05).

CONCLUSIONCPP-ACP can effectively improve the demineralized enamel lesions during orthodontic treatment, so it has some remineralization potential for enamel decalcification in orthodontics.

Adolescent ; Caseins ; chemistry ; therapeutic use ; Dental Enamel ; drug effects ; Female ; Humans ; Male ; Orthodontics ; methods

OBJECTIVETo investigate the effect of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) on the stability of resin-dentin bonds against pH cycling.

METHODSResin-bonded dentin specimens were prepared following manufacturers' instructions, and randomly divided into 3 groups. Among them, 2 groups experienced pH cycling, in which specimens applied CPP-ACP or distilled and deionized water (DDW) on the bonding interface, respectively. Microtensile bond strength (muTBS) testing, failure mode analysis, micromorphological and nanoleakage evaluation of bonding interface and elemental analysis within hybrid layer were performed after 15 days pH cycling. The other group was tested immediately after specimens' preparation without pH cycling.

RESULTSNo significant differences were found in muTBS between no pH cycling and pH cycling/CPP-ACP group. Their muTBS were both significantly higher than that of pH cycling/DDW group (P < 0.05). Mixed fractures were the most prevalent failure mode. The quality of hybrid layer in pH cycling/CPP-ACP group was better than that of pH cycling/DDW group, and the nanoleakage was also less severe. Comparing with pH cycling/DDW group, the atomic percentages of Ca in the other two groups were both significantly higher, while those of Ag were statistically lower (P < 0.05).

CONCLUSIONLocal application of CPP-ACP can promote the stability of resin-dentin bonding interface against pH cycling and prolong bonding degeneration.

Calcium Phosphates ; Caseins ; Dental Bonding ; Dentin ; Dentin-Bonding Agents ; Humans ; Phosphopeptides ; Resin Cements

OBJECTIVETo observe the effect of OHOLV on the remineralization of early enamel caries.

METHODSFifty bovine teeth with artificial early caries were divided into five groups randomly and treated with OHOLV, casein phosphopeptide amorphous calcium phosphate (CPP-ACP), NaF, OHOLV+NaF and distilled and deionized water (DDW) respectively. Then the teeth were subjected to the pH-cycling. The surface microhardness (SMH) of enamel before demineralization and after remineralization were measured by microhardness detector and the histomorphologic changes of the enamel surface were compared by scanning election microscope (SEM).

RESULTSThe SMH of all the experimental groups increased significantly after remineralization (P < 0.001). The SMH of the OHOLV group was lower than that of NaF group (P < 0.001), while there was no significant difference between the OHOLV group and the CPP-ACP group (P > 0.05). After remineralization, a large amount of comparatively large mineral particles deposited on the surface of the enamel treated with OHOLV.

CONCLUSIONOHOLV can promote the remineralization of the early enamel caries.

Animals ; Calcium Phosphates ; Cariostatic Agents ; Caseins ; Cattle ; Dental Caries ; Dental Enamel ; Tooth Remineralization

PURPOSE: The proper selection of suture is very important to minimize infection after gastrointestinal anastomosis and closure, which is one of the causes of postoperative complications such as leakage and stricture, etc, in the surgical field. Thus this study focuses on which suture can reduce bacterial infection after surgical operation by comparing in vitro microbial infiltration rates of three synthetic absorbable sutures and that of silk - a relatively absorbable material, using E. coli. METHODS: Four different, sterilized kinds of absorbable sutures were used for two experiments. In experiment 1, the cut-off suture was directly applied to the standard method agar plate and cultured for observation. In experiment 2, the cut-off suture was diluted with 1 ml of tryptic soy broth to be smeared and cultured in the standard method agar plate and counted using a spectrophotometer. RESULTS: The first experiment revealed that bacterial growth was not observed in the monofilament and antibiotic-coated multifilament sutures, while the other sutures of multifilament structure were invaded by bacteria. In the second experiment, counting and averaging the colony from five plates of each test showed that the number of E. coli of monofilament suture, antibiotics-coated polyglactin, polyglactin and silk were 0+/-0, 39.3+/-14.4, 208.6+/-76.6, 59.4+/-26.7, respectively. CONCLUSION: Sutures of monofilament structure are believed to be a relatively safe material that can be used for gastrointestinal anastomosis and closure since it has lower bacterial infiltration rates than sutures of multifilament structure.
Agar ; Bacteria ; Bacterial Infections ; Caseins ; Constriction, Pathologic ; Polyglactin 910 ; Postoperative Complications ; Protein Hydrolysates ; Silk ; Sutures

BACKGROUND: Atopic dermatitis(AD) and urticaria(UR) are common allergic diseases associated with various food allergens. We evaluated possible differences of sensitization rates to egg, milk, and soy bean according to the age in children with AD and UR. MATERIALS AND METHOD: One hundred and thirty-six patients(n=100 in AD, n=36 in UR) who had visited Samsung Medical Center from January 1998 to February 2000 were enrolled and divided into 3 groups by age: gruop I, children under 1year of age (45 in AD, 17 in UR); group II, between 1 and 3 years of age (32 in AD, 12 in UR); and group III, children over 3 years of age (23 in AD, 7 in UR). Total and specific IgE to cow milk, a-lactalbumin(a-LA), beta-lactoglobulin(beta-LG), casein, soy, egg white(EW) and egg yolk(EY) were measured by RAST or CAP system. RESULTS: Total IgE was highest in group III of AD patients(p<0.05), while there were no significant differences among the three groups of UR patients(p>0.05). The most common allergen among AD patients was EW(54%) for all age groups (51.1% in group I, 56.3% in group II, 56.5% in group III), while among UR patients, beta-LG(22.2%) was the most common food allergen, especially beta-LG(35.3%) in Group I, CM/casein(27.3%) in Group II, and CM/alpha-LA/casein/EW(12.5%) in Group III. Sensitization rate to EW, EY and soy bean were higher in AD than in UR(p<0.05). CONCLUSION: Sensitization rate to egg was higher in patients with AD than in those with UR. Restriction of eggs maybe helpful in management of infants with a family history of AD.
Allergens ; Caseins ; Child* ; Dermatitis, Atopic* ; Eggs ; Humans ; Immunoglobulin E ; Infant ; Milk* ; Ovum* ; Soy Milk* ; Soybeans ; Urticaria*

OBJECTIVE: The purpose of this in vitro study was to examine the effects of fluoridated, casein phosphopeptide.amorphous calcium phosphate complex (CPP-ACP)-containing, and functionalized beta-tricalcium phosphate (fTCP)-containing toothpastes on remineralization of white spot lesions (WSLs) by using Quantitative light-induced fluorescence (QLF-D) Biluminator(TM) 2. METHODS: Forty-eight premolars, extracted for orthodontic reasons from 12 patients, with artificially induced WSLs were randomly and equally assigned to four treatment groups: fluoride (1,000 ppm), CPP-ACP, fTCP (with sodium fluoride), and control (deionized water) groups. Specimens were treated twice daily for 2 weeks and stored in saliva solution (1:1 mixture of artificial and human stimulated saliva) otherwise. QLF-D Biluminator(TM) 2 was used to measure changes in fluorescence, indicating alterations in the mineral contents of the WSLs, immediately before and after the 2 weeks of treatment. RESULTS: Fluorescence greatly increased in the fTCP and CPP-ACP groups compared with the fluoride and control groups, which did not show significant differences. CONCLUSIONS: fTCP- and CPP-ACP-containing toothpastes seem to be more effective in reducing WSLs than 1,000-ppm fluoride-containing toothpastes.
Bicuspid ; Calcium ; Caseins ; Dental Caries* ; Fluorescence ; Fluorides ; Humans ; Saliva ; Sodium ; Toothpastes*

PURPOSE: Cow's milk-specific IgE (CM-IgE) has been proposed as one of the valuable markers for diagnosis of clinical cow's milk (CM) allergy. In this study, we evaluated the additional usefulness of casein-specific IgE (casein-IgE) and IgG (casein-IgG) for the diagnosis of clinical CM allergy. METHODS: Fifty-eight subjects, aged from 3 months to 154 months, were enrolled. Thirty-four patients showed immediate-type of clinical CM allergy, and 24 patients were atopic controls. The serum levels of CM-IgE, casein-IgE, and casein-IgG were measured. Patients were divided into 2 groups: those aged under 12 months and those aged 12 months or over. The diagnostic values of each antibody were analyzed and compared using the Mann-Whitney U-test and receiver operating characteristic curves. RESULTS: CM allergy had significantly higher levels of CM-IgE and casein-IgE, and lower levels of casein-IgG/IgE ratio when compared to atopic controls in both age groups (P<0.05). CM-IgE and casein-IgE were shown to be better predictive markers for immediate-type CM allergy in patients under 12 months, while casein-IgG/IgE ratio was a more useful marker in those aged 12 months or over. Considering 100% positive predictive values, cutoff points were 1.04 kU/L for CM-IgE, 0.11 kU/L for casein-IgE, 19.5 for casein-IgG/IgE ratio in patients aged under 12 months, and 7.1 kU/L for CM-IgE, 1.41 kU/L for casein-IgE, 12.51 for casein-IgG/IgE ratio in those aged 12 months or over. CONCLUSION: CM-IgE, casein-IgE, and casein-IgG/IgE ratio are useful markers for predicting immediate-type CM allergy. Further studies are needed on diagnostic decision points for CM allergy using combination of cutoff values of these 3 markers.
Anaphylaxis ; Antibodies* ; Caseins* ; Diagnosis ; Humans ; Hypersensitivity ; Immunoglobulin E* ; Immunoglobulin G* ; Milk ; Milk Hypersensitivity* ; ROC Curve

OBJECTIVETo evaluate the effects of casein osphopeptide-amorphous calcium phosphate (CPP-ACP) in preventing enamel demineralization.

METHODSEnamel blocks were prepared from premolars extracted from orthodontic patients. The specimens were treated for 30 min daily for 7 days with one of the following agents: deionized water (negative control), CPP-ACP paste, and NaF solutions (positive controls) (0.2% and 2%). After the treatments, the specimens were immersed in a demineralizing solution (pH 4.5) for 7 days. The morphology and depth of the lesion were observed using scanning electron microscopy, and the content of Ca, P, Mg in the demineralized enamel was measured by electron probe micro-analyzer.

RESULTSThe demineralization rates in all the treatment groups were significantly smaller than those in the control group after 7 days of demineralization.

CONCLUSIONThe application of CPP-ACP to the enamel surfaces can inhibit enamel demineralization with an equivalent effect to 0.2% NaF.

Adolescent ; Caseins ; therapeutic use ; Dental Enamel ; Humans ; Sodium Fluoride ; Tooth Demineralization ; prevention & control ; Tooth Remineralization