The effects of bichloride of mercury upon the luminescence and respiration of the luminous bacterium, achromobacter fischeri

Houck, Carina

doi:10.1002/jcp.1030200304

Cited by 7 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Purines, cystein, and various vitamins seem to be without effect (215) . Some substances, for example HgCI2, depress the physiological activity without displacing the optimum (239,240) . Most of this work has been performed on bacteria and yeast.…”

Section: Effect Of High Temperaturesmentioning

confidence: 99%

Physiological Aspects of Heat and Cold

Belehradek¹

1957

Annu. Rev. Physiol.

View full text Add to dashboard Cite

The author of this chapter has been invited to revise the literature on the general physiological aspects of the action of temperature for the 20 years which have elapsed since the publication of the first edition of his relevant book (1). Well over 3,000 papers in this field have been published since then, and only a small fraction can be mentioned here. These should be regarded as a representative sample illustrating the general trends prevailing during this period. The two most important are (a) a descriptive study of the temperature response, requirements, and tolerance of various physiological properties and functions, and (b) an attempt to obtain a closer insight into the intimate cellular chemomechanisms by analytic studies of the responses of living systems to temperature variations. THERMIC PROPERTIESThe effect of body size upon the time required to attain equilibrium with the external temperature has been illustrated by experiments on the fruit fly (Drosophila), where 30 secs. suffice to stabilize the wing rhythm at a new temperature (2), and on bacteria in which flash-heat exposures of 0.5 sec. duration were applied, when only 10-5 sec. were lost in heat conduc tion (3; cf. also 164). The combined effect of body size, coloration, radiation, and air current in medium-sized insects was studied, and the results show that the excess temperature varies with from 0.4 to 1.0 power of the body size, compared with 0.4 to 0.7 power in control experiments with spherical plasticine models (4). As regards poikilothermic animals in general, several good reviews are available (see S, 6, 7, 18).The specific heat of the sickle-shaped human erythrocyte was found to be normal, so the condition cannot therefore be attributed to abnormal crystallization of haemoglobin. On the other hand, the specific heat of normal red cells decreases somewhat on slight heating (8). RATE PROCESSESTemperature coefficients.-To describe the extent of the response to temperature variations of physiological rate processes, three kinds of temperature coefficient mainly are used, namely, Q10, J.I. (otherwise written as E, or A), and b [in the b, a-rule (cf. 1)]. Most authors apply these constants merely as a means of description without accepting the theoretical implica-1 The survey of the literature pertaining to this review was completed in May, 1956. 59 Annu. Rev. Physiol. 1957.19:59-82. Downloaded from www.annualreviews.org by Case Western Reserve University on 11/02/14. For personal use only. Quick links to online content Further ANNUAL REVIEWS B E LEHR A DEKtions attached to anyone of them ; for this purpose QID is still most widely used despite its recognized drawbacks, as it is the easiest to calculate. The somewhat more complicated b, a-rule, calculating the temperature from a specific zero point (a) upwards and using the log/log representation, has been recently applied by various authors to the reproduction rate of ciliates (9, 10); to the rate 0f respiration in bacteria (11, 12), sliced mammalian tissue (13), and insects (14); to the ...

show abstract

Section: Effect Of High Temperaturesmentioning

confidence: 99%

Physiological Aspects of Heat and Cold

Belehradek¹

1957

Annu. Rev. Physiol.

View full text Add to dashboard Cite

show abstract

“…Vision was reduced to perception and projection of light. According to Duke-Elder (I954), mercury perchloride (HgCl2) is particularly toxic to the ocular tissues; apart from its affinity for sulphydryl groups and its power of precipitating proteins, it is lipoid-soluble (Heilbrunn, I928, I943;Wilbur, 1941), and thus readily penetrates the cells, at the same time altering the permeability of their membranes (Houck, 1942 Duke-Elder (I954) cited a case reported by Schmelzer (I933) wherein mercury perchloride inadvertently dusted into an eye in place of calomel in a case of phlyctenular conjunctivitis resulted in gross palpebral oedema, marked chemosis, and widespread necrosis of the bulbar conjunctiva with clouding of the cornea. No similar case of accidental application has since appeared in the literature.…”

mentioning

confidence: 99%

Eye injury with mercuric chloride.

Sood¹,

Sofat²,

Mehrotra³

et al. 1972

British Journal of Ophthalmology

View full text Add to dashboard Cite

With the advent of modern ophthalmic treatment the use of mercury preparations in ophthalmology has almost been relegated to past history, but mercurous chloride (calomel) is still occasionally used as an insufflation into the eyes, especially in such conditions as phlyctenular keratoconjunctivitis. Recently we saw a case wherein mercuric chloride (HgCl2) was mistaken for calomel and dusted into the right eye of a young woman suffering from phlyctenular keratoconjunctivitis with disastrous results. Case reportA 1g-year-old married woman came to the eye out-patients department on September I 6, I 97 I, of Snowden Hospital, Simla, with the complaint ofphotophobia and the presence of a nodule at the lower limbus of the right eye of one week's duration. The junior casualty officer noted a large phlycten at the limbus at the 6 o'clock position and inadvertently dusted mercuric chloride into the eye after putting in a drop of xylocaine.The patient immediately complained of severe pain in the eye and although the eye was thoroughly flushed with normal saline within a minute the whole cornea became opaque, and the conjunctiva, especially on the globe, lost its lustre and became whitish with widespread necrosis.The eye was dressed with atropine I per cent. and hydrocortisone eye ointment and the patient was admitted to hospital. Within 2 hours gross oedema of the lids necessitated examination with lid retractors (Fig. I). The conjunctiva was extensively necrosed and blanched and in places markedly chemosed and ballooned, thus hiding the cornea, which was oedematous, cloudy, and denuded of epithelium; the anterior chamber, iris, pupil, lens, and fundus could not be seen because of the opaque cornea.The patient was given oral prednisolone IO mg. 4-hrly and chloramphenicol 250 mg. 6 hrly. Betamethasone eye drops were given hourly, with atropine, terramycin, and cortisone eye ointment every 4 hours.By the evening the pain was relieved and the palpebral and conjunctival oedema became a little less. By next morning the oedema was considerably less while the cornea showed signs of clearing (Fig. 2). The frequency of local corticosteroid drops was reduced to six times a day while the rest of the regime was continued.

show abstract

Corneal Trauma From Projection of Metallic Mercury Into the Eyes

Weber¹,

Babel²

1979

Archives of Ophthalmology

View full text Add to dashboard Cite

The effects of bichloride of mercury upon the luminescence and respiration of the luminous bacterium, achromobacter fischeri

Cited by 7 publications

References 15 publications

Physiological Aspects of Heat and Cold

Physiological Aspects of Heat and Cold

Eye injury with mercuric chloride.

Corneal Trauma From Projection of Metallic Mercury Into the Eyes

Contact Info

Product

Resources

About