[The relation between the seed germination and seedling development of Bletilla striata and Mycena osmundicola etc. fungi]

This paper reports the effects of Mycena osmundicola etc. fungi on the seed germination and seedling growth of Bletilla striata. The results showed that B. striata seeds are easily germinated under normal conditions and belong to a special type among Orchidaceae. Fungi promote cotyledon differentiation and growth, as well as rhizoid formation of B. striata protocorms after seeds are sown with fungi. A liquid extract mixture enhanced the percentage of seed germination, and carbinol extract notably accelerated differentiation and growth of the protocorm's cotyledon after seeds were incubated with the liquid extract of Mycena osmundicola-culture products.

[Determination of sugar components in wild and cultured sclerotia of Grifola umbellata (pers. ex Fr.) Pilat at different ages]

Our determination indicates that in both wild and cultured sclerotia of Grifola umbellata the contents of reducing sugar decrease with the growing years; the contents of Polysaccharide peak in the second year of growth; the contents of protein increase with the growing years; the contents of fat reaches maximum in the first year of growth; in cultured sclerotia ergosterol becomes highest in contents when the plant is two years old, while in wild sclerotia it remains lowest.

Simplified limbal incision for extraocular rectus muscle surgery

We describe a limbal incision for extraocular muscle surgery which involves only one incision to the conjunctival-Tenon's layer instead of the three separate incisions required in the standard limbal approach. Based on the 316 extraocular muscle operations in which we have used this one-snip procedure, we conclude that it is simpler and faster than the standard limbal incision, and that it provides good surgical exposure and probably less tissue damage.

Analgesia produced by pituitary ACTH and dopaminergic transmission in the arcuate

Analgesia (NAA) caused by nonacupuncture point (abdominal muscle) stimulation after lesioning the analgesia inhibitory system (AIS) or treating the subject with proglumide was abolished by hypophysectomy or adrenalectomy. The final sector of the NAA afferent pathway from the nonacupuncture point to the pituitary gland and the initial sector of the descending pain inhibitory system were found in the anterior and posterior arcuate nucleus (A-HARN and P-HARN), respectively. Analgesia caused by ACTH microinjected into the P-HARN disappeared after denervation of the A-HARN, but that caused by dopamine did not. Firing rates of P-HARN neurons were increased by nonacupuncture point simulation (NAPS) after lesion of the AIS or treatment with proglumide. The NAPS responsive neurons also responded to ultramicroinjected dopamine, but not to ultramicroinjected ACTH. Both NAA and NAPS responsive neuron activity that were abolished by hypophysectomy were restored by concurrent application of NAPS and intraperitoneal ACTH. Reduction of sodium ions due to adrenalectomy was found to abolish NAA. It was concluded that NAA production involves dopaminergic transmission in the HARN and ACTH acting presynaptically on this transmission.

[Studies on the effects of fungi on the course of seed germination of Dendrobium lohohens and Dendrobium candidum]

This paper reports the results of studies on the effects of fungi isolated from the protocorms of Orchidaceae on the course of seed germination of D. lohohens and D. candidum. The experiments revealed that these fungi could promote seed germination: the seed germination rate of D. lohohens was 20%, that of D. candidum was 64%, and that of control was zero. The changes of cell ultrastructure in the course of fungus-infected seed germination of D. candidum was also studied. After hyphae of M. osmundicola penetrate the embryo from the suspensor, organelles of embryonic cells infected with fungi will disappear. When the hyphae wall is thickened and enclosed by the embryo's, the hyphae will be digested and used as the source of nutrition for seed germination. Also, the metabolism of cells without infection, but adjacent to those cells penetrated by hyphae is enhanced.

[Da cheng qi tang on 45Ca content of the isolated colon smooth muscle from experimental colon obstruction rats]

Da Cheng Qi Tang (DCQT) is a classical prescription of Chinese medicine for treatment of acute intestinal obstruction. In this paper, the isolated colon smooth muscle from normal and experimental colon obstruction (CO) rats were used to study the effect of DCQT on 45Ca content. The results showed that the 45Ca content on isolated colon smooth muscle (microns/g wet tissue, mean +/- S) was 0.043 +/- 0.009 in the normal and 0.057 +/- 0.012 in those treated by DCQT respectively. The content of 45Ca in CO was higher than the normal, DCQT can reduce the content of 45Ca in CO. It is known that the higher level of intracellular CA++ is related to the formation and the development of acute intestinal obstruction. The inhibitory effect of DCQT on 45Ca content may play an important role in the treatment of acute colon obstruction.

[Effects of fungi and its liquid extract on seed germination of Dendrobium hancockii Rolf]

The experiment revealed that several species of fungi isolated from the protocorms of Orchidaceae notable promote the seed germination of Dendrobium hancockii. The seed germination rate amounts to over 20% when the seeds are incubated with fungi, but zero without incubation. Seed germination rate ranges from 40 to 70% when the incubation is affected in liquid extract of the cultural products of fungi, but the growth of protocorms and seedlings of Dendrobium hancockii is slower in liquid extract of fungi than on mycolia.

Preferred postoperative alignment after congenital esotropia surgery

A total of 117 patients with congenital esotropia who underwent muscle surgery were included in our study and were followed for a minimum of three years. Only those patients who were orthotropic or were within +/- 10 prism diopters (PD) of orthotropia six months postoperatively were included. Of the 117 patients, 101 patients (86%) remained orthotropic or within +/- 10 PD of orthotropia three years postoperatively, but 13 patients (11%) developed consecutive exotropia (greater than 10 PD). Five years after surgery, 17 of 68 patients (25%) had consecutive exotropia (greater than 10 PD). Our study demonstrates that despite satisfactory postoperative alignment, there is a steady progression towards exotropic drift over long-term follow-up. Our study also suggests that a preferred alignment shortly after congenital esotropia surgery is within 10 PD of esotropia since all of the patients who had consecutive exotropia (greater than 10 PD) were either orthotropic or exotropic (less than or equal to 10 PD) six months after surgery.

A modified extracapsular cataract extraction for pediatric cataracts

We present a modified procedure of extracapsular cataract extraction (ECCE) with a small central posterior capsulectomy for pediatric cataracts that is designed to eliminate posterior capsule opacification and to keep open the option of later secondary implantation of a posterior chamber intraocular lens. Of 76 study eyes in which the procedure was performed only three developed posterior capsule opacification. All seven control eyes that had standard ECCE with the posterior capsule left intact developed secondary membranes shortly after surgery.

[Determination of primary metabolic products of fungi promoting seed germination of Gastrodia elata Bl. and other Orchidaceae medicinal plants]

The contents of amino acids, protein, water-soluble sugar, reducing sugar and microelements in seven strains of seed-germination-promoting fungi were determined. It was found that the contents of primary products were different in these fungi. In the light of physiological characteristics of seed germination, the action mechanism of the products in promoting seed germination was discussed.

Visual acuity measurements by swept spatial frequency visual-evoked-cortical potentials (VECPs): clinical application in children with various visual disorders

Previous studies have indicated that visual acuities of normal infants can be estimated with good accuracy using swept spatial frequency visual-evoked-potentials (VECPs). In this report we describe acuity measurements obtained with this technique from 304 examinations performed on 135 children having various visual disorders. When possible, two or more different stimulation frequencies (8, 12, 15 or 24 contrast reversals/sec) were used in each patient, and three to eight sweep VECPs were obtained from each patient under each simulation and recording condition. High correlation coefficients (0.94 - 0.96) between the acuity estimated on each patient from either the single sweep giving the best visual acuity (BSS) or from vector averages (VeA) of the EEG data obtained from several sweeps confirmed previous findings in normal infants. We also found high correlation coefficients among BSS recorded at different temporal frequencies (0.79-0.97) and among comparisons of BSS or VeA acuity to optotype visual acuity (0.6-0.89). Children with clinically undetectable optokinetic responses showed lower visual acuity estimated by BSS than those who demonstrated optokinetic nystagmus. We conclude that the sweep VECP is a valid method, giving estimates of acuity which correlate well with optotype acuity and correspond well to other clinical findings, and that it can be useful in the clinical management of nonverbal patients.

Simultaneous surgery for bilateral congenital cataracts

In about one third of patients congenital cataracts are bilateral. If the cataracts are dense, and the patient an infant, bilateral simultaneous cataract removal reduces anesthetic risk, hospital stay, and cost and allows earlier optical correction. This study represents a retrospective survey of 32 eyes (16 cases) with simultaneous surgery for bilateral congenital cataracts. Bilateral simultaneous surgery can be performed to avoid a second general anesthesia in infants who have bilateral dense congenital cataracts.

Weight and recumbent length from 1 to 12 mo of age: reference data for 1-mo increments

Serial data from 504 infants were used to develop reference data for 1-mo increments in weight and recumbent length by fitting a family of three-parameter mathematical functions to the serial data for each individual. The percentiles for status and for increments tended to be larger for the boys than for the girls except for the lower percentiles of increments for weight after 9-10 mo and for recumbent length after 8-9 mo. These data can be used to assess growth in white or black infants whether they are breast-fed or formula-fed. These new data will allow earlier evaluation of growth velocity than the reference data for 3- and 6-mo increments that were available previously. This can lead to the earlier initiation of diagnostic procedures and treatment. The present data should be useful also in research studies.

Nucleotide sequence and analysis of the N-terminal coding region of the Spodoptera-active delta-endotoxin gene of Bacillus thuringiensis aizawai 7.29

The nucleotide sequence of a 2711bp DNA segment which contains the N-terminal coding sequence and the 5' flanking region of a crystal protein gene (bta) from Bacillus thuringiensis subsp. aizawai 7.29 has been determined. The coding region encodes an 824 amino-acid polypeptide corresponding to a carboxy-terminally truncated delta-endotoxin specifically active against the cotton leaf worm Spodoptera littoralis. Comparison of the deduced amino acid sequence of the bta gene with that of the 4.5, 5.3 and 6.6 kb classes of lepidopteran-active delta-endotoxins revealed that the Bta sequence contains a very high level of amino acid substitutions in the N-terminal part of the protoxin molecule. The substitutions are grouped in several highly variable segments separated by highly conserved regions. These conserved domains are also present in the dipteran- and coleopteran-active delta-endotoxins. The control region of the bta gene shows considerable DNA identity with the control regions of the other lepidopteran-active genes. Deletions of the 3' region of the gene were carried out and the toxic fraction of the bta delta-endotoxin was identified with the N-terminal half of the molecule.

Reference data for head circumference and 1-month increments from 1 to 12 months of age

Serial head circumference measurements in 462 participants in the Fels Longitudinal Study were used to develop reference data for ages 1 to 12 months. We used a three-parameter mathematical function to model the serial head circumference data for each individual and estimated head circumference at 1-month intervals. Reference data for selected percentiles of head circumference status and 1-month increments were calculated from the estimated head circumferences. These reference data are presented in tables and charts for use in testing hypotheses about group differences or to monitor changes within individuals.

Prediction of body weight for the nonambulatory elderly from anthropometry

Body weight is one of the most important measurements in assessing nutritional status. Weight is also an important variable in equations that are needed to predict caloric expenditure and in indexes of body composition. Equations to predict the body weight of nonambulatory elderly persons with known errors should make use of body measurements that are indexes of the actual constituents of body composition and that can be collected regardless of an elderly person's level of mobility. The study samples consisted of a validation sample of 228 ambulatory white elderly persons, a cross-validation sample, and a clinical-validation sample of nonambulatory white elderly persons. Equations to predict body weight in the validation sample were derived from recumbent measures of arm and calf circumferences, triceps and subscapular skinfolds, and knee height. The accuracy, sensitivity, and validity of the equations were independently tested in the cross-validation sample; mean signed differences in actual and predicted weight ranged from 0.1 to 1.8 kg. In the clinical-validation sample, the mean differences were larger. Prediction equations are presented using two, three, and four body measurements to allow the selection of an equation based upon those measurements that are possible to collect from a nonambulatory person on an individual basis.