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PubMed1999

Characterization of a complex chromosomal rearrangement in a patient with a typical catlike cry and no other clinical findings of cri-du-chat syndrome.

We report on the clinical, cytogenetic, and molecular cytogenetic findings in a 4-year-old girl who was evaluated for developmental delay and a catlike cry from birth. No other findings of cri-du-chat syndrome were present. Karyotype analysis demonstrated a de novo deletion and inverted duplication of the 5p region. The abnormality was confirmed and further defined by detailed FISH analysis using cosmid and lambda phage clones previously mapped to distinct regions of 5p. The analyses documented deletion of 5p15.3-->pter and an inverted duplication of 5p14-->5p15.3. The deleted segment on 5p contains the region implicated in the isolated catlike cry feature of the cri-du-chat syndrome, confirming that the genes involved in the catlike cry map to the distal end of 5p. Except for the catlike cry and possibly the developmental delay that may be due to the deletion of 5p, the duplication of 5p14-->5p15.3 in this patient did not present with additional anomalies. This study further demonstrates the usefulness of the molecular cytogenetic approach for characterizing complex chromosome rearrangements. Such analyses of patients with an isolated catlike cry can avoid an incorrect diagnosis of the cri-du-chat syndrome, which is associated with a more severe prognosis.

Child, Preschool↗
PubMed2004

[Infant crying diary: a useful aid in distinguishing between normal and excessive crying behavior].

Three infant girls aged 9, 10 and 8 weeks, who cried excessively according to their parents, were referred by the general practitioner to the paediatrician. Using a crying diary it was possible to ascertain that one infant fulfilled the criteria of infantile colic. The diary showed that a second infant was not crying excessively and her mother could be reassured that her baby's behaviour was normal. The third infant proved to be suffering from an organic disease (Alpha-I antitrypsin deficiency), which had not been obvious at clinical assessment. The crying diary provided clues that warranted further investigation. The parents of all 3 infants were reassured and the crying lessened over a period of several weeks. When parents complain that their child cries excessively, it is useful to chart the amount of crying time in a diary. Registration for one week is sufficient. If the child does not suffer from an organic disease, the mainstay of treatment is to explain normal crying behaviour and that it often helps if the infant is not offered too many stimuli. Parents can be reassured that spontaneous resolution will generally occur at the age of three months.

Adult↗
PubMed1993

Epitopes on Cry j I and Cry j II for the human IgE antibodies cross-reactive between Cupressus sempervirens and Cryptomeria japonica pollen.

Forty sea from French patients allergic to Cupressus sempervirens pollen were tested for cross-reactivities against Cry j I, Cry j II (major allergens of Cryptomeria japonica pollen) and other pollen allergens from botanically related plants. Seventy-three per cent of the sera reacted with either Cry j I or Cry j II, or with both of them. These IgE cross-reactions were blocked effectively by mAb 046 (anti-Cry j I) or N26, T27 (anti-Cry j II), and weakly by mAbs 052, 027 and 026 (anti-Cry j I). Furthermore, the IgE antibodies in two sera, #40 and #11, bound to peptide fractions obtained from enzyme-digested Cry j I, and mAb 027 could also bind to the fractions. Analyses of the amino acid sequences of the peptides revealed that reactive peptides contained "NGNATPQLTKNAGVLTCSLSKR" sequence and the third residue N3 was glycosylated, however, when the N3 was not glycosylated, the IgE antibodies did not react, but mAb 027 could. The glycosylation of the N3 might be required for IgE-binding to the peptides. Sugar component on the N3 residue was found to be 0.4 mol galactose, 1.3 mol mannose, 0.8 mol fucose and 2.0 mol N-acetyl-glucosamine. Cross-reactivities against other pollen allergens from botanically related plants were found in most of the sera. However, many of these reactivities were detected by sandwich ELISA but not by an ELISA using allergen-coated plates, indicating that it is important to select an appropriate ELISA procedure in order to detect an allergen or an IgE antibody to an allergen.

Allergens↗
PubMed1999

Can newborns discriminate between their own cry and the cry of another newborn infant?

Two experiments were conducted to test whether newborns could discriminate between their own cry and the cry of another newborn infant. Facial behavior and nonnutritive sucking rate were adopted as dependent measures. In Experiment 1, 20 newborns in an awake state were presented with either their own cry or the cry of another infant. In the latter condition, newborns showed the facial expression of distress more frequently and for a longer duration. In addition, the rate of sucking decreased significantly between the pretest phase and the 1st min of presentation of another infant's cry. Newborns' responses, although delayed and less intense, showed a similar trend in Experiment 2, during which 20 newborns in a sleep state were tested with the same procedure. These results indicate the newborns' capability to discriminate between the 2 cry stimuli and show the effectiveness of a newborn cry in inducing distress signals in another newborn infant.

Crying↗
PubMed2005

Determination of the 'critical region' for cat-like cry of Cri-du-chat syndrome and analysis of candidate genes by quantitative PCR.

Cri-du-chat (CDC, OMIM 123450) is a chromosomal syndrome that results from partial deletions on the short arm of chromosome 5. The clinical features of CDC normally include high-pitched cat-like cry, mental retardation, microcephaly, hypertelorism and epicanthic folds. The cat-like cry is the most prominent clinical characteristic in newborn children and is usually considered as diagnostic for the CDC syndrome. Using a strategy of 'phenotype dissection', the critical region for cat-like cry was mapped to the chromosomal segment 5p15.3-5p15.2 in previous reports. In this study, the distal breakpoints of two interstitial deletions in two clinical distinctive CDC patients are analysed, one with and one without the cat-like cry. Using PCR, the critical region for the cat-like cry is mapped to a short 640 kbp region on chromosome 5p. Genome analysis of this critical region reveals a gene-rich sequence containing five known genes, five putative genes and three spliced EST sequences, altogether 71 predicted exons. Three genes, FLJ25076, a homolog to a ubiquitin-conjugating enzyme UBC-E2, FLJ20303, a nucleolar protein NOP2, which may play a role in the regulation of the cell cycle and MGC5309, a protein with similarity to Nut2, a Drosophila transcriptional coactivator, have been characterized and expression profiles determined by quantitative PCR. These results suggest that one candidate gene, FLJ25076, encodes a ubiquitin-conjugated enzyme E2 type, which is locally expressed in thoracic and scalp tissues. The other two genes are expressed uniformly in all tissues tested, which suggest that they are housekeeping genes.

Animals↗
PubMed1993

Objective confirmation of crying durations in infants referred for excessive crying.

Parents commonly seek clinicians' help for infant crying that they judge to be excessive. To date there is no independent evidence whether such babies actually cry more than average. To assess this, maternal diary and 24 hour audiotape recordings of the crying periods of 16 infants referred for excessive crying were compared with equivalent measures of a normative sample. The overall amounts of crying measured by the two methods were similar. The referred infants cried substantially more over 24 hours and in the afternoon and evening. The difference approached significance in the morning but was insignificant at night time. Some qualifications to the findings are indicated.

Crying↗
PubMed1989

[The cat cry (cri du chat) syndrome: report of a case with review of 10 cases at the National Taiwan University Hospital].

The cat cry (cri du chat) syndrome is a rare congenital anomaly due to partial deletion of the short arm of the No. 5 chromosome. Since the first report of Lejeune et al, in 1963, nearly 400 cases have been reported. However, the syndrome with a ring chromosome is still very rare and only 10 cases were reported up to 1988, since the first report of Rohde and Tompkins in 1965. To investigate the chromosomal changes in the patients of cat cry syndrome, a chromosomal study was carried out on 10 cases of cat cry syndrome from 5,870 cases submitted to the Laboratory of Cytogenetics, National Taiwan University Hospital from Nov. 1968 through Apr. 1988. These ten cases included 3 males and 7 females (M:F = 1:2.3) aged 2 days to 18 months with an average of 5.5 months. The most common clinical features are: cat-like cry, growth failure, microcephaly with mental retardation, round face with facial abnormalities including hypertelorism, downward slanting palpebral fissures, micrognathia and low-set ears, and simian crease. Laryngomalacia or underdevelopment of the larynx may be a factor causing the cat-like cry. On chromosome analysis, 8 out of these 10 cases showed the usual simple deletion of the short arm of the no. 5 chromosome, and the other 2 cases revealed ring chromosome including a case of pure ring chromosome([(4, XY, r (5)] and a case of mosaicism with one ring chromosome, 2 ring chromosomes and simple deletion of the short arm of the No. 5 chromosome.(ABSTRACT TRUNCATED AT 250 WORDS)

Chromosome Aberrations↗
PubMed2006

Cry-consensus peptide, a novel peptide for immunotherapy of Japanese cedar pollinosis, induces Th1-predominant response in Cry j 1-sensitized B10.S mice.

Cry-consensus peptide (CCP) is a newly designed peptide for peptide-based immunotherapy of Japanese cedar pollinosis but its mechanism of efficacy is unknown. We investigated the effect of CCP on Cry j 1-specific Th1/Th2 response in a mice model. Subcutaneous injection of CCP decreased Cry j 1-specific IgE and IgG1 in blood slightly, but the IgG2a level was increased significantly in a dose dependent manner. Splenocytes from these mice were stimulated with Cry j 1 in vitro. This inhibited IL-4, IL-5 and IL-10 secretion significantly, but IFN-gamma secretion was increased. In vitro CCP stimulation of splenocytes from Cry j 1-sensitized mice induced more marked Th1-predominancy of cytokine production than native allergen stimulation. Taken together, these data suggest that one of the mechanisms of CCP is dependent on the modulation of the antigen-specific Th1/Th2 response.

Allergens↗
PubMed1999

Binding of phylogenetically distant Bacillus thuringiensis cry toxins to a Bombyx mori aminopeptidase N suggests importance of Cry toxin's conserved structure in receptor binding.

We investigated the binding proteins for three Cry toxins, Cry1Aa, Cry1Ac, and the phylogenetically distant Cry9Da, in the midgut cell membrane of the silkworm. In a ligand blot experiment, Cry1Ac and Cry9Da bound to the same 120-kDa aminopeptidase N (APN) as Cry1Aa. A competition experiment with the ligand blot indicated that the three toxins share the same binding site on several proteins. The values of the dissociation constants of the three Cry toxins and 120-kDa APN are as low as the case of other Cry toxins and receptors. These results suggest that distantly related Cry toxins bind to the same site on the same proteins, especially with APN. We propose that the conserved structure in these three toxins includes the receptor-binding site.

Amino Acid Sequence↗
PubMed2002

Three T-cell determinants of Cry j 1 and Cry j 2, the major Japanese cedar pollen antigens, retain their immunogenicity and tolerogenicity in a linked peptide.

It has been demonstrated in detail that administration of a dominant T-cell determinant to animals induces activation or immunological tolerance of T cells. However, it has not been determined whether multiple T-cell determinants, when integrated into a single peptide, retain their potential to induce T-cell activation and tolerance. We prepared a synthetic peptide comprising three T-cell determinants of Cry j 1 and Cry j 2, the major Japanese cedar pollen antigens, and investigated the immunogenicity and tolerogenicity of each T-cell determinant in the linked peptide by means of lymph node cell proliferation assays using mice. Lymph node cells from mice immunized with each of the three T-cell determinants proliferated against the linked peptide in a dose-dependent manner, similar to that of the immunized peptide. Lymph node cells from mice immunized with the linked peptide proliferated against all of the three T-cell determinants. In addition, the degree of proliferation against the three T-cell determinants occurred according to their original immunogenicity, as observed in the native protein antigens. Oral administration of the linked peptide to mice before they were immunized with Cry j 1 and Cry j 2 inhibited lymph node cell proliferation against the three T-cell determinants, depending on the dose of the linked peptide administered. In conclusion, it was demonstrated that three T-cell determinants retain their original immunogenicity and tolerogenicity in a linked peptide comprising them.

Allergens↗
PubMed2000

Evaluations of child transgressions, disciplinary choices, and expected child compliance in a no-cry and a crying infant condition in physically abusive and comparison mothers.

OBJECTIVE: Several components of a social information processing model of child physical abuse were tested. Abusive and comparison mothers' evaluations of children's transgressions, choices of disciplinary techniques, expectations for children's compliance following discipline, and appraisals of the appropriateness of disciplinary choice were examined in a no-cry and a crying-infant condition. METHOD: Thirty physically abusive and 30 matched comparison mothers were individually matched on ethnic background, age, education, marital status, number of children, and cognitive ability. Mothers were asked to respond to questions related to vignettes describing children engaging in moral, conventional, and personal transgressions. RESULTS: As predicted, abusive, relative to comparison, mothers evaluated conventional and personal, but not moral, transgressions as more wrong, used more power assertion (physical and verbal force), expected less compliance from their own children, and appraised their own disciplinary responses as less appropriate. In contrast to expectations, there were no group by cry condition interaction effects on any of the study measures. CONCLUSIONS: The findings provide additional support for the view that abusive, relative to comparison, mothers are different in their evaluations and expectations of their own children's behaviors and that they more frequently select aversive disciplinary techniques. However, given the lack of an expected differential impact of a stressful condition on the cognitions and disciplinary choices in abusive mothers, additional research is needed.

Adult↗
PubMed1997

Comparison of concentrations of Cry j 1 and Cry j 2 in diploid and triploid Japanese cedar (Cryptomeria japonica) pollen extracts.

Japanese cedar (Cryptomeria japonica) possibilities has been a serious allergic disease in Japan. There are two kinds of Japanese cedar trees; the popular one is diploid, the less popular is triploid. These trees are not very different morphologically. However, the relative allergenicity of their pollens is unknown, although both major allergens, Cry j 1 and Cry j 22, have been purified and cloned from the diploid line. Triploid trees are sterile and the allergenicity of their pollen may differ. Using Japanese-cedar-allergic patient sera, we compared the concentration of these two major allergens in both kinds of pollen. Pollen collected from different years and regions was also studied. The results indicate that triploid tree pollen extract has lower concentrations of both major allergens; therefore, the pollen may be less allergenic.

Allergens↗
PubMed1990

A locus for familial hypertrophic cardiomyopathy is closely linked to the cardiac myosin heavy chain genes, CRI-L436, and CRI-L329 on chromosome 14 at q11-q12.

We report that a gene responsible for familial hypertrophic cardiomyopathy (HC) is closely linked to the cardiac alpha and beta myosin heavy chain (MHC) genes on chromosome 14q11. We have recently shown that probe CRI-L436, derived from the anonymous DNA locus D14S26, detects a polymorphic restriction fragment that segregates with familial HC in affected members of a large Canadian family. Using chromosomal in situ hybridization, we have mapped CRI-L436 to chromosome 14 at q11-q12. Because the cardiac MHC genes also map to this chromosomal band, we have determined the genetic distances between the cardiac beta MHC gene, D14S26, and the familial HC locus. Data presented here show that these three loci are linked within 5 centimorgans on chromosome 14 at q11-q12. The possibility that defects in either the cardiac alpha or beta MHC genes are responsible for familial HC is discussed.

Cardiomyopathy, Hypertrophic↗
PubMed1989

[Neuropsychiatric and neuropathologic findings in an adult case of cri-du-chat syndrome (Lejeune syndrome, crying cat syndrome)].

It is reported on a mental retarded female, observed from 3-33 years of age, which demonstrated even in adulthood with long lasting shrill crying the clinical leading symptom of Lejeune syndrome and further typical symptoms with inhibition of physical maturation, important delayed motoric and mental development, microcephaly resp. characteristic craniofacial dysmorphia, anomalies of extremities, muscular hypotonia and susceptibility to infection. Psychically there were a striking affective instability and irritability, neuropathologically pachygyria and multiple cortical heterotopias.

Adult↗
PubMed2001

Analysis of the canine IgE-binding epitope on the major allergen (Cry j 1) of Japanese cedar pollen with anti-Cry j 1 monoclonal antibodies.

In our previous study [Immunology 91 (1997) 161] using monoclonal antibodies (mAbs) specific to Cry j 1, a major allergen in Japanese cedar (Cryptomeria japonica) pollen, we identified five independent epitopes (EP-1-EP-5) on the molecule and found that EP-1 and EP-5 are the predominant allergic epitopes for humans and monkeys, respectively. In this study, we analyzed the epitopes recognized by IgE in the sera of 10 dogs sensitive to C. japonica pollen allergen using an IgE-ELISA inhibition method with these mAbs. The IgE reaction patterns varied among dogs. In eight of the 10 dogs, IgE recognized EP-5 which is a predominant allergic epitope for monkeys with the pollenosis. In four dogs, IgE recognized EP-1 which is a predominant allergic epitope for human patients with the pollenosis. In three dogs, IgE recognized EP-4 which is a heat-stable epitope. EP-5 is a predominant allergic epitope for dogs and some, but not all, dogs have IgE reaction patterns to the epitopes similar to those of humans.

Allergens↗
PubMed2003

Cytotoxic activity of Bacillus thuringiensis Cry proteins on mammalian cells transfected with cadherin-like Cry receptor gene of Bombyx mori (silkworm).

Cry1Aa, an insecticidal protein produced by Bacillus thuringiensis, has been shown to bind to cadherin-like protein, BtR175, in Bombyx mori (silkworm) midgut. We previously reported three variant alleles of BtR175 (BtR175a, b and c). When transiently expressed in COS7 cells, all the three BtR175 variants bound to Cry1Aa. We stably expressed BtR175b in HEK293 cells. These BtR175b-expressing cells swelled and died in the presence of activated Cry1Aa in a dose- and time-dependent manner, showing that BtR175b itself can impart Cry1Aa-susceptibility to mammalian cells. These cells were more susceptible to Cry1Aa than to Cry1Ab and Cry1Ac. Since dispersed B. mori midgut cells were reported to be highly susceptible to Cry1Ac, this result suggested that other Cry1Ac-specific receptor(s) were simultaneously working with BtR175 in the midgut cells. Advantages are also discussed of applying these transfected mammalian cells to toxicity assays of mutant Cry proteins.

Animals↗